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

Comparing libev/ev.c (file contents):
Revision 1.374 by root, Sat Feb 26 15:21:01 2011 UTC vs.
Revision 1.380 by root, Mon Jun 27 19:20:01 2011 UTC

…		…
464	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	464	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
465		465
466	#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)	466	#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
467	#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)	467	#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
468		468
469	#if __GNUC__ >= 4	469	/* the following are taken from libecb */
470	# define expect(expr,value) __builtin_expect ((expr),(value))	470	/* ecb.h start */
471	# define noinline __attribute__ ((noinline))	471
		472	/* many compilers define _GNUC_ to some versions but then only implement
		473	* what their idiot authors think are the "more important" extensions,
		474	* causing enourmous grief in return for some better fake benchmark numbers.
		475	* or so.
		476	* we try to detect these and simply assume they are not gcc - if they have
		477	* an issue with that they should have done it right in the first place.
		478	*/
		479	#ifndef ECB_GCC_VERSION
		480	#if !defined(__GNUC_MINOR__) \|\| defined(__INTEL_COMPILER) \|\| defined(__SUNPRO_C) \|\| defined(__SUNPRO_CC) \|\| defined(__llvm__) \|\| defined(__clang__)
		481	#define ECB_GCC_VERSION(major,minor) 0
		482	#else
		483	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) \|\| (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
		484	#endif
		485	#endif
		486
		487	#if __cplusplus
		488	#define ecb_inline static inline
		489	#elif ECB_GCC_VERSION(2,5)
		490	#define ecb_inline static __inline__
		491	#elif ECB_C99
		492	#define ecb_inline static inline
472	#else	493	#else
473	# define expect(expr,value) (expr)	494	#define ecb_inline static
474	# define noinline
475	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
476	# define inline
477	# endif	495	#endif
478	#endif
479		496
		497	#if ECB_GCC_VERSION(3,1)
		498	#define ecb_attribute(attrlist) __attribute__(attrlist)
		499	#define ecb_is_constant(expr) __builtin_constant_p (expr)
		500	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
		501	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
		502	#else
		503	#define ecb_attribute(attrlist)
		504	#define ecb_is_constant(expr) 0
		505	#define ecb_expect(expr,value) (expr)
		506	#define ecb_prefetch(addr,rw,locality)
		507	#endif
		508
		509	#define ecb_noinline ecb_attribute ((__noinline__))
		510	#define ecb_noreturn ecb_attribute ((__noreturn__))
		511	#define ecb_unused ecb_attribute ((__unused__))
		512	#define ecb_const ecb_attribute ((__const__))
		513	#define ecb_pure ecb_attribute ((__pure__))
		514
		515	#if ECB_GCC_VERSION(4,3)
		516	#define ecb_artificial ecb_attribute ((__artificial__))
		517	#define ecb_hot ecb_attribute ((__hot__))
		518	#define ecb_cold ecb_attribute ((__cold__))
		519	#else
		520	#define ecb_artificial
		521	#define ecb_hot
		522	#define ecb_cold
		523	#endif
		524
		525	/* put around conditional expressions if you are very sure that the */
		526	/* expression is mostly true or mostly false. note that these return */
		527	/* booleans, not the expression. */
480	#define expect_false(expr) expect ((expr) != 0, 0)	528	#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
481	#define expect_true(expr) expect ((expr) != 0, 1)	529	#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
		530	/* ecb.h end */
		531
		532	#define expect_false(cond) ecb_expect_false (cond)
		533	#define expect_true(cond) ecb_expect_true (cond)
		534	#define noinline ecb_noinline
		535
482	#define inline_size static inline	536	#define inline_size ecb_inline
483		537
484	#if EV_FEATURE_CODE	538	#if EV_FEATURE_CODE
485	# define inline_speed static inline	539	# define inline_speed ecb_inline
486	#else	540	#else
487	# define inline_speed static noinline	541	# define inline_speed static noinline
488	#endif	542	#endif
489		543
490	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	544	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
…		…
581		635
582	#ifdef __linux	636	#ifdef __linux
583	# include <sys/utsname.h>	637	# include <sys/utsname.h>
584	#endif	638	#endif
585		639
586	static unsigned int noinline	640	static unsigned int noinline ecb_cold
587	ev_linux_version (void)	641	ev_linux_version (void)
588	{	642	{
589	#ifdef __linux	643	#ifdef __linux
590	unsigned int v = 0;	644	unsigned int v = 0;
591	struct utsname buf;	645	struct utsname buf;
…		…
620	}	674	}
621		675
622	/*****************************************************************************/	676	/*****************************************************************************/
623		677
624	#if EV_AVOID_STDIO	678	#if EV_AVOID_STDIO
625	static void noinline	679	static void noinline ecb_cold
626	ev_printerr (const char *msg)	680	ev_printerr (const char *msg)
627	{	681	{
628	write (STDERR_FILENO, msg, strlen (msg));	682	write (STDERR_FILENO, msg, strlen (msg));
629	}	683	}
630	#endif	684	#endif
631		685
632	static void (syserr_cb)(const char msg);	686	static void (syserr_cb)(const char msg);
633		687
634	void	688	void ecb_cold
635	ev_set_syserr_cb (void (cb)(const char msg))	689	ev_set_syserr_cb (void (cb)(const char msg))
636	{	690	{
637	syserr_cb = cb;	691	syserr_cb = cb;
638	}	692	}
639		693
640	static void noinline	694	static void noinline ecb_cold
641	ev_syserr (const char *msg)	695	ev_syserr (const char *msg)
642	{	696	{
643	if (!msg)	697	if (!msg)
644	msg = "(libev) system error";	698	msg = "(libev) system error";
645		699
…		…
678	#endif	732	#endif
679	}	733	}
680		734
681	static void (alloc)(void *ptr, long size) = ev_realloc_emul;	735	static void (alloc)(void *ptr, long size) = ev_realloc_emul;
682		736
683	void	737	void ecb_cold
684	ev_set_allocator (void (cb)(void *ptr, long size))	738	ev_set_allocator (void (cb)(void *ptr, long size))
685	{	739	{
686	alloc = cb;	740	alloc = cb;
687	}	741	}
688		742
…		…
870	select (0, 0, 0, 0, &tv);	924	select (0, 0, 0, 0, &tv);
871	#endif	925	#endif
872	}	926	}
873	}	927	}
874		928
875	inline_speed int
876	ev_timeout_to_ms (ev_tstamp timeout)
877	{
878	int ms = timeout * 1000. + .999999;
879
880	return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
881	}
882
883	/*****************************************************************************/	929	/*****************************************************************************/
884		930
885	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2*n and >> 4 longs /	931	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2*n and >> 4 longs /
886		932
887	/* find a suitable new size for the given array, */	933	/* find a suitable new size for the given array, */
…		…
905	}	951	}
906		952
907	return ncur;	953	return ncur;
908	}	954	}
909		955
910	static noinline void *	956	static void * noinline ecb_cold
911	array_realloc (int elem, void base, int cur, int cnt)	957	array_realloc (int elem, void base, int cur, int cnt)
912	{	958	{
913	cur = array_nextsize (elem, cur, cnt);	959	cur = array_nextsize (elem, cur, cnt);
914	return ev_realloc (base, elem * *cur);	960	return ev_realloc (base, elem * *cur);
915	}	961	}
…		…
1098	fdchanges [fdchangecnt - 1] = fd;	1144	fdchanges [fdchangecnt - 1] = fd;
1099	}	1145	}
1100	}	1146	}
1101		1147
1102	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */	1148	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1103	inline_speed void	1149	inline_speed void ecb_cold
1104	fd_kill (EV_P_ int fd)	1150	fd_kill (EV_P_ int fd)
1105	{	1151	{
1106	ev_io *w;	1152	ev_io *w;
1107		1153
1108	while ((w = (ev_io *)anfds [fd].head))	1154	while ((w = (ev_io *)anfds [fd].head))
…		…
1111	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	1157	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
1112	}	1158	}
1113	}	1159	}
1114		1160
1115	/* check whether the given fd is actually valid, for error recovery */	1161	/* check whether the given fd is actually valid, for error recovery */
1116	inline_size int	1162	inline_size int ecb_cold
1117	fd_valid (int fd)	1163	fd_valid (int fd)
1118	{	1164	{
1119	#ifdef _WIN32	1165	#ifdef _WIN32
1120	return EV_FD_TO_WIN32_HANDLE (fd) != -1;	1166	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1121	#else	1167	#else
1122	return fcntl (fd, F_GETFD) != -1;	1168	return fcntl (fd, F_GETFD) != -1;
1123	#endif	1169	#endif
1124	}	1170	}
1125		1171
1126	/* called on EBADF to verify fds */	1172	/* called on EBADF to verify fds */
1127	static void noinline	1173	static void noinline ecb_cold
1128	fd_ebadf (EV_P)	1174	fd_ebadf (EV_P)
1129	{	1175	{
1130	int fd;	1176	int fd;
1131		1177
1132	for (fd = 0; fd < anfdmax; ++fd)	1178	for (fd = 0; fd < anfdmax; ++fd)
…		…
1134	if (!fd_valid (fd) && errno == EBADF)	1180	if (!fd_valid (fd) && errno == EBADF)
1135	fd_kill (EV_A_ fd);	1181	fd_kill (EV_A_ fd);
1136	}	1182	}
1137		1183
1138	/* called on ENOMEM in select/poll to kill some fds and retry */	1184	/* called on ENOMEM in select/poll to kill some fds and retry */
1139	static void noinline	1185	static void noinline ecb_cold
1140	fd_enomem (EV_P)	1186	fd_enomem (EV_P)
1141	{	1187	{
1142	int fd;	1188	int fd;
1143		1189
1144	for (fd = anfdmax; fd--; )	1190	for (fd = anfdmax; fd--; )
…		…
1339		1385
1340	/*****************************************************************************/	1386	/*****************************************************************************/
1341		1387
1342	#if EV_SIGNAL_ENABLE \|\| EV_ASYNC_ENABLE	1388	#if EV_SIGNAL_ENABLE \|\| EV_ASYNC_ENABLE
1343		1389
1344	static void noinline	1390	static void noinline ecb_cold
1345	evpipe_init (EV_P)	1391	evpipe_init (EV_P)
1346	{	1392	{
1347	if (!ev_is_active (&pipe_w))	1393	if (!ev_is_active (&pipe_w))
1348	{	1394	{
1349	# if EV_USE_EVENTFD	1395	# if EV_USE_EVENTFD
…		…
1371	ev_io_start (EV_A_ &pipe_w);	1417	ev_io_start (EV_A_ &pipe_w);
1372	ev_unref (EV_A); /* watcher should not keep loop alive */	1418	ev_unref (EV_A); /* watcher should not keep loop alive */
1373	}	1419	}
1374	}	1420	}
1375		1421
1376	inline_size void	1422	inline_speed void
1377	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1423	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1378	{	1424	{
1379	if (!*flag)	1425	if (!*flag)
1380	{	1426	{
1381	int old_errno = errno; /* save errno because write might clobber it */
1382	char dummy;
1383
1384	*flag = 1;	1427	*flag = 1;
1385		1428
		1429	pipe_write_skipped = 1;
		1430
		1431	if (pipe_write_wanted)
		1432	{
		1433	int old_errno;
		1434
		1435	pipe_write_skipped = 0;
		1436
		1437	old_errno = errno; /* save errno because write will clobber it */
		1438
1386	#if EV_USE_EVENTFD	1439	#if EV_USE_EVENTFD
1387	if (evfd >= 0)	1440	if (evfd >= 0)
1388	{	1441	{
1389	uint64_t counter = 1;	1442	uint64_t counter = 1;
1390	write (evfd, &counter, sizeof (uint64_t));	1443	write (evfd, &counter, sizeof (uint64_t));
		1444	}
		1445	else
		1446	#endif
		1447	{
		1448	/* win32 people keep sending patches that change this write() to send() */
		1449	/* and then run away. but send() is wrong, it wants a socket handle on win32 */
		1450	/* so when you think this write should be a send instead, please find out */
		1451	/* where your send() is from - it's definitely not the microsoft send, and */
		1452	/* tell me. thank you. */
		1453	write (evpipe [1], &(evpipe [1]), 1);
		1454	}
		1455
		1456	errno = old_errno;
1391	}	1457	}
1392	else
1393	#endif
1394	/* win32 people keep sending patches that change this write() to send() */
1395	/* and then run away. but send() is wrong, it wants a socket handle on win32 */
1396	/* so when you think this write should be a send instead, please find out */
1397	/* where your send() is from - it's definitely not the microsoft send, and */
1398	/* tell me. thank you. */
1399	write (evpipe [1], &dummy, 1);
1400
1401	errno = old_errno;
1402	}	1458	}
1403	}	1459	}
1404		1460
1405	/* called whenever the libev signal pipe */	1461	/* called whenever the libev signal pipe */
1406	/* got some events (signal, async) */	1462	/* got some events (signal, async) */
1407	static void	1463	static void
1408	pipecb (EV_P_ ev_io *iow, int revents)	1464	pipecb (EV_P_ ev_io *iow, int revents)
1409	{	1465	{
1410	int i;	1466	int i;
1411		1467
		1468	if (revents & EV_READ)
		1469	{
1412	#if EV_USE_EVENTFD	1470	#if EV_USE_EVENTFD
1413	if (evfd >= 0)	1471	if (evfd >= 0)
1414	{	1472	{
1415	uint64_t counter;	1473	uint64_t counter;
1416	read (evfd, &counter, sizeof (uint64_t));	1474	read (evfd, &counter, sizeof (uint64_t));
1417	}	1475	}
1418	else	1476	else
1419	#endif	1477	#endif
1420	{	1478	{
1421	char dummy;	1479	char dummy;
1422	/* see discussion in evpipe_write when you think this read should be recv in win32 */	1480	/* see discussion in evpipe_write when you think this read should be recv in win32 */
1423	read (evpipe [0], &dummy, 1);	1481	read (evpipe [0], &dummy, 1);
		1482	}
1424	}	1483	}
		1484
		1485	pipe_write_skipped = 0;
1425		1486
1426	#if EV_SIGNAL_ENABLE	1487	#if EV_SIGNAL_ENABLE
1427	if (sig_pending)	1488	if (sig_pending)
1428	{	1489	{
1429	sig_pending = 0;	1490	sig_pending = 0;
…		…
1458	EV_P = signals [signum - 1].loop;	1519	EV_P = signals [signum - 1].loop;
1459		1520
1460	if (!EV_A)	1521	if (!EV_A)
1461	return;	1522	return;
1462	#endif	1523	#endif
		1524
		1525	evpipe_init (EV_A);
1463		1526
1464	signals [signum - 1].pending = 1;	1527	signals [signum - 1].pending = 1;
1465	evpipe_write (EV_A_ &sig_pending);	1528	evpipe_write (EV_A_ &sig_pending);
1466	}	1529	}
1467		1530
…		…
1599	#endif	1662	#endif
1600	#if EV_USE_SELECT	1663	#if EV_USE_SELECT
1601	# include "ev_select.c"	1664	# include "ev_select.c"
1602	#endif	1665	#endif
1603		1666
1604	int	1667	int ecb_cold
1605	ev_version_major (void)	1668	ev_version_major (void)
1606	{	1669	{
1607	return EV_VERSION_MAJOR;	1670	return EV_VERSION_MAJOR;
1608	}	1671	}
1609		1672
1610	int	1673	int ecb_cold
1611	ev_version_minor (void)	1674	ev_version_minor (void)
1612	{	1675	{
1613	return EV_VERSION_MINOR;	1676	return EV_VERSION_MINOR;
1614	}	1677	}
1615		1678
1616	/* return true if we are running with elevated privileges and should ignore env variables */	1679	/* return true if we are running with elevated privileges and should ignore env variables */
1617	int inline_size	1680	int inline_size ecb_cold
1618	enable_secure (void)	1681	enable_secure (void)
1619	{	1682	{
1620	#ifdef _WIN32	1683	#ifdef _WIN32
1621	return 0;	1684	return 0;
1622	#else	1685	#else
1623	return getuid () != geteuid ()	1686	return getuid () != geteuid ()
1624	\|\| getgid () != getegid ();	1687	\|\| getgid () != getegid ();
1625	#endif	1688	#endif
1626	}	1689	}
1627		1690
1628	unsigned int	1691	unsigned int ecb_cold
1629	ev_supported_backends (void)	1692	ev_supported_backends (void)
1630	{	1693	{
1631	unsigned int flags = 0;	1694	unsigned int flags = 0;
1632		1695
1633	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;	1696	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
…		…
1637	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;	1700	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
1638		1701
1639	return flags;	1702	return flags;
1640	}	1703	}
1641		1704
1642	unsigned int	1705	unsigned int ecb_cold
1643	ev_recommended_backends (void)	1706	ev_recommended_backends (void)
1644	{	1707	{
1645	unsigned int flags = ev_supported_backends ();	1708	unsigned int flags = ev_supported_backends ();
1646		1709
1647	#ifndef __NetBSD__	1710	#ifndef __NetBSD__
…		…
1659	#endif	1722	#endif
1660		1723
1661	return flags;	1724	return flags;
1662	}	1725	}
1663		1726
1664	unsigned int	1727	unsigned int ecb_cold
1665	ev_embeddable_backends (void)	1728	ev_embeddable_backends (void)
1666	{	1729	{
1667	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;	1730	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
1668		1731
1669	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */	1732	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
…		…
1714	ev_userdata (EV_P)	1777	ev_userdata (EV_P)
1715	{	1778	{
1716	return userdata;	1779	return userdata;
1717	}	1780	}
1718		1781
		1782	void
1719	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))	1783	ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1720	{	1784	{
1721	invoke_cb = invoke_pending_cb;	1785	invoke_cb = invoke_pending_cb;
1722	}	1786	}
1723		1787
		1788	void
1724	void ev_set_loop_release_cb (EV_P_ void (release)(EV_P), void (acquire)(EV_P))	1789	ev_set_loop_release_cb (EV_P_ void (release)(EV_P), void (acquire)(EV_P))
1725	{	1790	{
1726	release_cb = release;	1791	release_cb = release;
1727	acquire_cb = acquire;	1792	acquire_cb = acquire;
1728	}	1793	}
1729	#endif	1794	#endif
1730		1795
1731	/* initialise a loop structure, must be zero-initialised */	1796	/* initialise a loop structure, must be zero-initialised */
1732	static void noinline	1797	static void noinline ecb_cold
1733	loop_init (EV_P_ unsigned int flags)	1798	loop_init (EV_P_ unsigned int flags)
1734	{	1799	{
1735	if (!backend)	1800	if (!backend)
1736	{	1801	{
1737	origflags = flags;	1802	origflags = flags;
…		…
1765	if (!(flags & EVFLAG_NOENV)	1830	if (!(flags & EVFLAG_NOENV)
1766	&& !enable_secure ()	1831	&& !enable_secure ()
1767	&& getenv ("LIBEV_FLAGS"))	1832	&& getenv ("LIBEV_FLAGS"))
1768	flags = atoi (getenv ("LIBEV_FLAGS"));	1833	flags = atoi (getenv ("LIBEV_FLAGS"));
1769		1834
1770	ev_rt_now = ev_time ();	1835	ev_rt_now = ev_time ();
1771	mn_now = get_clock ();	1836	mn_now = get_clock ();
1772	now_floor = mn_now;	1837	now_floor = mn_now;
1773	rtmn_diff = ev_rt_now - mn_now;	1838	rtmn_diff = ev_rt_now - mn_now;
1774	#if EV_FEATURE_API	1839	#if EV_FEATURE_API
1775	invoke_cb = ev_invoke_pending;	1840	invoke_cb = ev_invoke_pending;
1776	#endif	1841	#endif
1777		1842
1778	io_blocktime = 0.;	1843	io_blocktime = 0.;
1779	timeout_blocktime = 0.;	1844	timeout_blocktime = 0.;
1780	backend = 0;	1845	backend = 0;
1781	backend_fd = -1;	1846	backend_fd = -1;
1782	sig_pending = 0;	1847	sig_pending = 0;
1783	#if EV_ASYNC_ENABLE	1848	#if EV_ASYNC_ENABLE
1784	async_pending = 0;	1849	async_pending = 0;
1785	#endif	1850	#endif
		1851	pipe_write_skipped = 0;
		1852	pipe_write_wanted = 0;
1786	#if EV_USE_INOTIFY	1853	#if EV_USE_INOTIFY
1787	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;	1854	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1788	#endif	1855	#endif
1789	#if EV_USE_SIGNALFD	1856	#if EV_USE_SIGNALFD
1790	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;	1857	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1791	#endif	1858	#endif
1792		1859
1793	if (!(flags & EVBACKEND_MASK))	1860	if (!(flags & EVBACKEND_MASK))
1794	flags \|= ev_recommended_backends ();	1861	flags \|= ev_recommended_backends ();
1795		1862
…		…
1820	#endif	1887	#endif
1821	}	1888	}
1822	}	1889	}
1823		1890
1824	/* free up a loop structure */	1891	/* free up a loop structure */
1825	void	1892	void ecb_cold
1826	ev_loop_destroy (EV_P)	1893	ev_loop_destroy (EV_P)
1827	{	1894	{
1828	int i;	1895	int i;
1829		1896
1830	#if EV_MULTIPLICITY	1897	#if EV_MULTIPLICITY
…		…
1960	infy_fork (EV_A);	2027	infy_fork (EV_A);
1961	#endif	2028	#endif
1962		2029
1963	if (ev_is_active (&pipe_w))	2030	if (ev_is_active (&pipe_w))
1964	{	2031	{
1965	/* this "locks" the handlers against writing to the pipe */	2032	/* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1966	/* while we modify the fd vars */
1967	sig_pending = 1;
1968	#if EV_ASYNC_ENABLE
1969	async_pending = 1;
1970	#endif
1971		2033
1972	ev_ref (EV_A);	2034	ev_ref (EV_A);
1973	ev_io_stop (EV_A_ &pipe_w);	2035	ev_io_stop (EV_A_ &pipe_w);
1974		2036
1975	#if EV_USE_EVENTFD	2037	#if EV_USE_EVENTFD
…		…
1993	postfork = 0;	2055	postfork = 0;
1994	}	2056	}
1995		2057
1996	#if EV_MULTIPLICITY	2058	#if EV_MULTIPLICITY
1997		2059
1998	struct ev_loop *	2060	struct ev_loop * ecb_cold
1999	ev_loop_new (unsigned int flags)	2061	ev_loop_new (unsigned int flags)
2000	{	2062	{
2001	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	2063	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2002		2064
2003	memset (EV_A, 0, sizeof (struct ev_loop));	2065	memset (EV_A, 0, sizeof (struct ev_loop));
…		…
2011	}	2073	}
2012		2074
2013	#endif /* multiplicity */	2075	#endif /* multiplicity */
2014		2076
2015	#if EV_VERIFY	2077	#if EV_VERIFY
2016	static void noinline	2078	static void noinline ecb_cold
2017	verify_watcher (EV_P_ W w)	2079	verify_watcher (EV_P_ W w)
2018	{	2080	{
2019	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	2081	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2020		2082
2021	if (w->pending)	2083	if (w->pending)
2022	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	2084	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2023	}	2085	}
2024		2086
2025	static void noinline	2087	static void noinline ecb_cold
2026	verify_heap (EV_P_ ANHE *heap, int N)	2088	verify_heap (EV_P_ ANHE *heap, int N)
2027	{	2089	{
2028	int i;	2090	int i;
2029		2091
2030	for (i = HEAP0; i < N + HEAP0; ++i)	2092	for (i = HEAP0; i < N + HEAP0; ++i)
…		…
2035		2097
2036	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	2098	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2037	}	2099	}
2038	}	2100	}
2039		2101
2040	static void noinline	2102	static void noinline ecb_cold
2041	array_verify (EV_P_ W *ws, int cnt)	2103	array_verify (EV_P_ W *ws, int cnt)
2042	{	2104	{
2043	while (cnt--)	2105	while (cnt--)
2044	{	2106	{
2045	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));	2107	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
…		…
2047	}	2109	}
2048	}	2110	}
2049	#endif	2111	#endif
2050		2112
2051	#if EV_FEATURE_API	2113	#if EV_FEATURE_API
2052	void	2114	void ecb_cold
2053	ev_verify (EV_P)	2115	ev_verify (EV_P)
2054	{	2116	{
2055	#if EV_VERIFY	2117	#if EV_VERIFY
2056	int i;	2118	int i;
2057	WL w;	2119	WL w;
…		…
2123	#endif	2185	#endif
2124	}	2186	}
2125	#endif	2187	#endif
2126		2188
2127	#if EV_MULTIPLICITY	2189	#if EV_MULTIPLICITY
2128	struct ev_loop *	2190	struct ev_loop * ecb_cold
2129	#else	2191	#else
2130	int	2192	int
2131	#endif	2193	#endif
2132	ev_default_loop (unsigned int flags)	2194	ev_default_loop (unsigned int flags)
2133	{	2195	{
…		…
2332	}	2394	}
2333	}	2395	}
2334		2396
2335	/* simply recalculate all periodics */	2397	/* simply recalculate all periodics */
2336	/* TODO: maybe ensure that at least one event happens when jumping forward? */	2398	/* TODO: maybe ensure that at least one event happens when jumping forward? */
2337	static void noinline	2399	static void noinline ecb_cold
2338	periodics_reschedule (EV_P)	2400	periodics_reschedule (EV_P)
2339	{	2401	{
2340	int i;	2402	int i;
2341		2403
2342	/* adjust periodics after time jump */	2404	/* adjust periodics after time jump */
…		…
2355	reheap (periodics, periodiccnt);	2417	reheap (periodics, periodiccnt);
2356	}	2418	}
2357	#endif	2419	#endif
2358		2420
2359	/* adjust all timers by a given offset */	2421	/* adjust all timers by a given offset */
2360	static void noinline	2422	static void noinline ecb_cold
2361	timers_reschedule (EV_P_ ev_tstamp adjust)	2423	timers_reschedule (EV_P_ ev_tstamp adjust)
2362	{	2424	{
2363	int i;	2425	int i;
2364		2426
2365	for (i = 0; i < timercnt; ++i)	2427	for (i = 0; i < timercnt; ++i)
…		…
2507	ev_tstamp prev_mn_now = mn_now;	2569	ev_tstamp prev_mn_now = mn_now;
2508		2570
2509	/* update time to cancel out callback processing overhead */	2571	/* update time to cancel out callback processing overhead */
2510	time_update (EV_A_ 1e100);	2572	time_update (EV_A_ 1e100);
2511		2573
		2574	/* from now on, we want a pipe-wake-up */
		2575	pipe_write_wanted = 1;
		2576
2512	if (expect_true (!(flags & EVRUN_NOWAIT \|\| idleall \|\| !activecnt)))	2577	if (expect_true (!(flags & EVRUN_NOWAIT \|\| idleall \|\| !activecnt \|\| pipe_write_skipped)))
2513	{	2578	{
2514	waittime = MAX_BLOCKTIME;	2579	waittime = MAX_BLOCKTIME;
2515		2580
2516	if (timercnt)	2581	if (timercnt)
2517	{	2582	{
2518	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;	2583	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2519	if (waittime > to) waittime = to;	2584	if (waittime > to) waittime = to;
2520	}	2585	}
2521		2586
2522	#if EV_PERIODIC_ENABLE	2587	#if EV_PERIODIC_ENABLE
2523	if (periodiccnt)	2588	if (periodiccnt)
2524	{	2589	{
2525	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2590	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2526	if (waittime > to) waittime = to;	2591	if (waittime > to) waittime = to;
2527	}	2592	}
2528	#endif	2593	#endif
2529		2594
2530	/* don't let timeouts decrease the waittime below timeout_blocktime */	2595	/* don't let timeouts decrease the waittime below timeout_blocktime */
2531	if (expect_false (waittime < timeout_blocktime))	2596	if (expect_false (waittime < timeout_blocktime))
2532	waittime = timeout_blocktime;	2597	waittime = timeout_blocktime;
		2598
		2599	/* at this point, we NEED to wait, so we have to ensure */
		2600	/* to pass a minimum nonzero value to the backend */
		2601	if (expect_false (waittime < backend_mintime))
		2602	waittime = backend_mintime;
2533		2603
2534	/* extra check because io_blocktime is commonly 0 */	2604	/* extra check because io_blocktime is commonly 0 */
2535	if (expect_false (io_blocktime))	2605	if (expect_false (io_blocktime))
2536	{	2606	{
2537	sleeptime = io_blocktime - (mn_now - prev_mn_now);	2607	sleeptime = io_blocktime - (mn_now - prev_mn_now);
2538		2608
2539	if (sleeptime > waittime - backend_fudge)	2609	if (sleeptime > waittime - backend_mintime)
2540	sleeptime = waittime - backend_fudge;	2610	sleeptime = waittime - backend_mintime;
2541		2611
2542	if (expect_true (sleeptime > 0.))	2612	if (expect_true (sleeptime > 0.))
2543	{	2613	{
2544	ev_sleep (sleeptime);	2614	ev_sleep (sleeptime);
2545	waittime -= sleeptime;	2615	waittime -= sleeptime;
…		…
2551	++loop_count;	2621	++loop_count;
2552	#endif	2622	#endif
2553	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */	2623	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2554	backend_poll (EV_A_ waittime);	2624	backend_poll (EV_A_ waittime);
2555	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */	2625	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
		2626
		2627	pipe_write_wanted = 0;
		2628
		2629	if (pipe_write_skipped)
		2630	{
		2631	assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
		2632	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
		2633	}
		2634
2556		2635
2557	/* update ev_rt_now, do magic */	2636	/* update ev_rt_now, do magic */
2558	time_update (EV_A_ waittime + sleeptime);	2637	time_update (EV_A_ waittime + sleeptime);
2559	}	2638	}
2560		2639
…		…
3214	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3293	infy_wd (EV_A_ ev->wd, ev->wd, ev);
3215	ofs += sizeof (struct inotify_event) + ev->len;	3294	ofs += sizeof (struct inotify_event) + ev->len;
3216	}	3295	}
3217	}	3296	}
3218		3297
3219	inline_size void	3298	inline_size void ecb_cold
3220	ev_check_2625 (EV_P)	3299	ev_check_2625 (EV_P)
3221	{	3300	{
3222	/* kernels < 2.6.25 are borked	3301	/* kernels < 2.6.25 are borked
3223	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	3302	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3224	*/	3303	*/
…		…
3849	}	3928	}
3850		3929
3851	/*****************************************************************************/	3930	/*****************************************************************************/
3852		3931
3853	#if EV_WALK_ENABLE	3932	#if EV_WALK_ENABLE
3854	void	3933	void ecb_cold
3855	ev_walk (EV_P_ int types, void (cb)(EV_P_ int type, void w))	3934	ev_walk (EV_P_ int types, void (cb)(EV_P_ int type, void w))
3856	{	3935	{
3857	int i, j;	3936	int i, j;
3858	ev_watcher_list wl, wn;	3937	ev_watcher_list wl, wn;
3859		3938

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Comparing libev/ev.c (file contents): Revision 1.374 by root, Sat Feb 26 15:21:01 2011 UTC vs. Revision 1.380 by root, Mon Jun 27 19:20:01 2011 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.374 by root, Sat Feb 26 15:21:01 2011 UTC vs.
Revision 1.380 by root, Mon Jun 27 19:20:01 2011 UTC