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

Comparing libev/ev.c (file contents):
Revision 1.345 by sf-exg, Sat Jul 31 22:33:26 2010 UTC vs.
Revision 1.373 by root, Sun Feb 20 02:56:23 2011 UTC

…		…
1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009,2010,2011 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 modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
10	* 1. Redistributions of source code must retain the above copyright notice,	10	* 1. Redistributions of source code must retain the above copyright notice,
11	* this list of conditions and the following disclaimer.	11	* this list of conditions and the following disclaimer.
12	*	12	*
13	* 2. Redistributions in binary form must reproduce the above copyright	13	* 2. Redistributions in binary form must reproduce the above copyright
14	* notice, this list of conditions and the following disclaimer in the	14	* notice, this list of conditions and the following disclaimer in the
15	* documentation and/or other materials provided with the distribution.	15	* documentation and/or other materials provided with the distribution.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED	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-	18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO	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-	20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,	21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
35	* and other provisions required by the GPL. If you do not delete the	35	* and other provisions required by the GPL. If you do not delete the
36	* provisions above, a recipient may use your version of this file under	36	* provisions above, a recipient may use your version of this file under
37	* either the BSD or the GPL.	37	* either the BSD or the GPL.
38	*/	38	*/
39		39
40	#ifdef __cplusplus
41	extern "C" {
42	#endif
43
44	/* this big block deduces configuration from config.h */	40	/* this big block deduces configuration from config.h */
45	#ifndef EV_STANDALONE	41	#ifndef EV_STANDALONE
46	# ifdef EV_CONFIG_H	42	# ifdef EV_CONFIG_H
47	# include EV_CONFIG_H	43	# include EV_CONFIG_H
48	# else	44	# else
49	# include "config.h"	45	# include "config.h"
50	# endif	46	# endif
		47
		48	#if HAVE_FLOOR
		49	# ifndef EV_USE_FLOOR
		50	# define EV_USE_FLOOR 1
		51	# endif
		52	#endif
51		53
52	# if HAVE_CLOCK_SYSCALL	54	# if HAVE_CLOCK_SYSCALL
53	# ifndef EV_USE_CLOCK_SYSCALL	55	# ifndef EV_USE_CLOCK_SYSCALL
54	# define EV_USE_CLOCK_SYSCALL 1	56	# define EV_USE_CLOCK_SYSCALL 1
55	# ifndef EV_USE_REALTIME	57	# ifndef EV_USE_REALTIME
…		…
160	# define EV_USE_EVENTFD 0	162	# define EV_USE_EVENTFD 0
161	# endif	163	# endif
162		164
163	#endif	165	#endif
164		166
165	#include <math.h>
166	#include <stdlib.h>	167	#include <stdlib.h>
167	#include <string.h>	168	#include <string.h>
168	#include <fcntl.h>	169	#include <fcntl.h>
169	#include <stddef.h>	170	#include <stddef.h>
170		171
…		…
181	#ifdef EV_H	182	#ifdef EV_H
182	# include EV_H	183	# include EV_H
183	#else	184	#else
184	# include "ev.h"	185	# include "ev.h"
185	#endif	186	#endif
		187
		188	EV_CPP(extern "C" {)
186		189
187	#ifndef _WIN32	190	#ifndef _WIN32
188	# include <sys/time.h>	191	# include <sys/time.h>
189	# include <sys/wait.h>	192	# include <sys/wait.h>
190	# include <unistd.h>	193	# include <unistd.h>
…		…
234	/* to make it compile regardless, just remove the above line, */	237	/* to make it compile regardless, just remove the above line, */
235	/* but consider reporting it, too! :) */	238	/* but consider reporting it, too! :) */
236	# define EV_NSIG 65	239	# define EV_NSIG 65
237	#endif	240	#endif
238		241
		242	#ifndef EV_USE_FLOOR
		243	# define EV_USE_FLOOR 0
		244	#endif
		245
239	#ifndef EV_USE_CLOCK_SYSCALL	246	#ifndef EV_USE_CLOCK_SYSCALL
240	# if __linux && __GLIBC__ >= 2	247	# if __linux && __GLIBC__ >= 2
241	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS	248	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242	# else	249	# else
243	# define EV_USE_CLOCK_SYSCALL 0	250	# define EV_USE_CLOCK_SYSCALL 0
…		…
378	# undef EV_USE_INOTIFY	385	# undef EV_USE_INOTIFY
379	# define EV_USE_INOTIFY 0	386	# define EV_USE_INOTIFY 0
380	#endif	387	#endif
381		388
382	#if !EV_USE_NANOSLEEP	389	#if !EV_USE_NANOSLEEP
383	# ifndef _WIN32	390	/* hp-ux has it in sys/time.h, which we unconditionally include above */
		391	# if !defined(_WIN32) && !defined(__hpux)
384	# include <sys/select.h>	392	# include <sys/select.h>
385	# endif	393	# endif
386	#endif	394	#endif
387		395
388	#if EV_USE_INOTIFY	396	#if EV_USE_INOTIFY
389	# include <sys/utsname.h>
390	# include <sys/statfs.h>	397	# include <sys/statfs.h>
391	# include <sys/inotify.h>	398	# include <sys/inotify.h>
392	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */	399	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393	# ifndef IN_DONT_FOLLOW	400	# ifndef IN_DONT_FOLLOW
394	# undef EV_USE_INOTIFY	401	# undef EV_USE_INOTIFY
…		…
411	# define EFD_CLOEXEC O_CLOEXEC	418	# define EFD_CLOEXEC O_CLOEXEC
412	# else	419	# else
413	# define EFD_CLOEXEC 02000000	420	# define EFD_CLOEXEC 02000000
414	# endif	421	# endif
415	# endif	422	# endif
416	# ifdef __cplusplus
417	extern "C" {
418	# endif
419	int (eventfd) (unsigned int initval, int flags);	423	EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420	# ifdef __cplusplus
421	}
422	# endif
423	#endif	424	#endif
424		425
425	#if EV_USE_SIGNALFD	426	#if EV_USE_SIGNALFD
426	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	427	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427	# include <stdint.h>	428	# include <stdint.h>
…		…
433	# define SFD_CLOEXEC O_CLOEXEC	434	# define SFD_CLOEXEC O_CLOEXEC
434	# else	435	# else
435	# define SFD_CLOEXEC 02000000	436	# define SFD_CLOEXEC 02000000
436	# endif	437	# endif
437	# endif	438	# endif
438	# ifdef __cplusplus
439	extern "C" {
440	# endif
441	int signalfd (int fd, const sigset_t *mask, int flags);	439	EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
442		440
443	struct signalfd_siginfo	441	struct signalfd_siginfo
444	{	442	{
445	uint32_t ssi_signo;	443	uint32_t ssi_signo;
446	char pad[128 - sizeof (uint32_t)];	444	char pad[128 - sizeof (uint32_t)];
447	};	445	};
448	# ifdef __cplusplus
449	}
450	# endif	446	#endif
451	#endif
452
453		447
454	/**/	448	/**/
455		449
456	#if EV_VERIFY >= 3	450	#if EV_VERIFY >= 3
457	# define EV_FREQUENT_CHECK ev_verify (EV_A)	451	# define EV_FREQUENT_CHECK ev_verify (EV_A)
458	#else	452	#else
459	# define EV_FREQUENT_CHECK do { } while (0)	453	# define EV_FREQUENT_CHECK do { } while (0)
460	#endif	454	#endif
461		455
462	/*	456	/*
463	* This is used to avoid floating point rounding problems.	457	* This is used to work around floating point rounding problems.
464	* It is added to ev_rt_now when scheduling periodics
465	* to ensure progress, time-wise, even when rounding
466	* errors are against us.
467	* This value is good at least till the year 4000.	458	* This value is good at least till the year 4000.
468	* Better solutions welcome.
469	*/	459	*/
470	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	460	#define MIN_INTERVAL 0.0001220703125 /* 1/2*13, good till 4000 /
		461	/#define MIN_INTERVAL 0.00000095367431640625 / 1/2*20, good till 2200 /
471		462
472	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	463	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
473	#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
		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)
474		468
475	#if __GNUC__ >= 4	469	#if __GNUC__ >= 4
476	# define expect(expr,value) __builtin_expect ((expr),(value))	470	# define expect(expr,value) __builtin_expect ((expr),(value))
477	# define noinline __attribute__ ((noinline))	471	# define noinline __attribute__ ((noinline))
478	#else	472	#else
…		…
535	# include "ev_win32.c"	529	# include "ev_win32.c"
536	#endif	530	#endif
537		531
538	/*****************************************************************************/	532	/*****************************************************************************/
539		533
		534	/* define a suitable floor function (only used by periodics atm) */
		535
		536	#if EV_USE_FLOOR
		537	# include <math.h>
		538	# define ev_floor(v) floor (v)
		539	#else
		540
		541	#include <float.h>
		542
		543	/* a floor() replacement function, should be independent of ev_tstamp type */
		544	static ev_tstamp noinline
		545	ev_floor (ev_tstamp v)
		546	{
		547	/* the choice of shift factor is not terribly important */
		548	#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
		549	const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
		550	#else
		551	const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
		552	#endif
		553
		554	/* argument too large for an unsigned long? */
		555	if (expect_false (v >= shift))
		556	{
		557	ev_tstamp f;
		558
		559	if (v == v - 1.)
		560	return v; /* very large number */
		561
		562	f = shift * ev_floor (v * (1. / shift));
		563	return f + ev_floor (v - f);
		564	}
		565
		566	/* special treatment for negative args? */
		567	if (expect_false (v < 0.))
		568	{
		569	ev_tstamp f = -ev_floor (-v);
		570
		571	return f - (f == v ? 0 : 1);
		572	}
		573
		574	/* fits into an unsigned long */
		575	return (unsigned long)v;
		576	}
		577
		578	#endif
		579
		580	/*****************************************************************************/
		581
		582	#ifdef __linux
		583	# include <sys/utsname.h>
		584	#endif
		585
		586	static unsigned int noinline
		587	ev_linux_version (void)
		588	{
		589	#ifdef __linux
		590	unsigned int v = 0;
		591	struct utsname buf;
		592	int i;
		593	char *p = buf.release;
		594
		595	if (uname (&buf))
		596	return 0;
		597
		598	for (i = 3+1; --i; )
		599	{
		600	unsigned int c = 0;
		601
		602	for (;;)
		603	{
		604	if (p >= '0' && p <= '9')
		605	c = c * 10 + *p++ - '0';
		606	else
		607	{
		608	p += *p == '.';
		609	break;
		610	}
		611	}
		612
		613	v = (v << 8) \| c;
		614	}
		615
		616	return v;
		617	#else
		618	return 0;
		619	#endif
		620	}
		621
		622	/*****************************************************************************/
		623
540	#if EV_AVOID_STDIO	624	#if EV_AVOID_STDIO
541	static void noinline	625	static void noinline
542	ev_printerr (const char *msg)	626	ev_printerr (const char *msg)
543	{	627	{
544	write (STDERR_FILENO, msg, strlen (msg));	628	write (STDERR_FILENO, msg, strlen (msg));
…		…
562	if (syserr_cb)	646	if (syserr_cb)
563	syserr_cb (msg);	647	syserr_cb (msg);
564	else	648	else
565	{	649	{
566	#if EV_AVOID_STDIO	650	#if EV_AVOID_STDIO
567	const char *err = strerror (errno);
568
569	ev_printerr (msg);	651	ev_printerr (msg);
570	ev_printerr (": ");	652	ev_printerr (": ");
571	ev_printerr (err);	653	ev_printerr (strerror (errno));
572	ev_printerr ("\n");	654	ev_printerr ("\n");
573	#else	655	#else
574	perror (msg);	656	perror (msg);
575	#endif	657	#endif
576	abort ();	658	abort ();
…		…
610	ptr = alloc (ptr, size);	692	ptr = alloc (ptr, size);
611		693
612	if (!ptr && size)	694	if (!ptr && size)
613	{	695	{
614	#if EV_AVOID_STDIO	696	#if EV_AVOID_STDIO
615	ev_printerr ("libev: memory allocation failed, aborting.\n");	697	ev_printerr ("(libev) memory allocation failed, aborting.\n");
616	#else	698	#else
617	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	699	fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
618	#endif	700	#endif
619	abort ();	701	abort ();
620	}	702	}
621		703
622	return ptr;	704	return ptr;
…		…
639	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */	721	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
640	unsigned char unused;	722	unsigned char unused;
641	#if EV_USE_EPOLL	723	#if EV_USE_EPOLL
642	unsigned int egen; /* generation counter to counter epoll bugs */	724	unsigned int egen; /* generation counter to counter epoll bugs */
643	#endif	725	#endif
644	#if EV_SELECT_IS_WINSOCKET	726	#if EV_SELECT_IS_WINSOCKET \|\| EV_USE_IOCP
645	SOCKET handle;	727	SOCKET handle;
		728	#endif
		729	#if EV_USE_IOCP
		730	OVERLAPPED or, ow;
646	#endif	731	#endif
647	} ANFD;	732	} ANFD;
648		733
649	/* stores the pending event set for a given watcher */	734	/* stores the pending event set for a given watcher */
650	typedef struct	735	typedef struct
…		…
715	# define EV_RELEASE_CB (void)0	800	# define EV_RELEASE_CB (void)0
716	# define EV_ACQUIRE_CB (void)0	801	# define EV_ACQUIRE_CB (void)0
717	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)	802	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
718	#endif	803	#endif
719		804
720	#define EVUNLOOP_RECURSE 0x80	805	#define EVBREAK_RECURSE 0x80
721		806
722	/*****************************************************************************/	807	/*****************************************************************************/
723		808
724	#ifndef EV_HAVE_EV_TIME	809	#ifndef EV_HAVE_EV_TIME
725	ev_tstamp	810	ev_tstamp
…		…
769	if (delay > 0.)	854	if (delay > 0.)
770	{	855	{
771	#if EV_USE_NANOSLEEP	856	#if EV_USE_NANOSLEEP
772	struct timespec ts;	857	struct timespec ts;
773		858
774	ts.tv_sec = (time_t)delay;	859	EV_TS_SET (ts, delay);
775	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
776
777	nanosleep (&ts, 0);	860	nanosleep (&ts, 0);
778	#elif defined(_WIN32)	861	#elif defined(_WIN32)
779	Sleep ((unsigned long)(delay * 1e3));	862	Sleep ((unsigned long)(delay * 1e3));
780	#else	863	#else
781	struct timeval tv;	864	struct timeval tv;
782		865
783	tv.tv_sec = (time_t)delay;
784	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
785
786	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	866	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
787	/* something not guaranteed by newer posix versions, but guaranteed */	867	/* something not guaranteed by newer posix versions, but guaranteed */
788	/* by older ones */	868	/* by older ones */
		869	EV_TV_SET (tv, delay);
789	select (0, 0, 0, 0, &tv);	870	select (0, 0, 0, 0, &tv);
790	#endif	871	#endif
791	}	872	}
		873	}
		874
		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;
792	}	881	}
793		882
794	/*****************************************************************************/	883	/*****************************************************************************/
795		884
796	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2*n and >> 4 longs /	885	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2*n and >> 4 longs /
…		…
939	inline_size void	1028	inline_size void
940	fd_reify (EV_P)	1029	fd_reify (EV_P)
941	{	1030	{
942	int i;	1031	int i;
943		1032
		1033	#if EV_SELECT_IS_WINSOCKET \|\| EV_USE_IOCP
		1034	for (i = 0; i < fdchangecnt; ++i)
		1035	{
		1036	int fd = fdchanges [i];
		1037	ANFD *anfd = anfds + fd;
		1038
		1039	if (anfd->reify & EV__IOFDSET)
		1040	{
		1041	SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
		1042
		1043	if (handle != anfd->handle)
		1044	{
		1045	unsigned long arg;
		1046
		1047	assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
		1048
		1049	/* handle changed, but fd didn't - we need to do it in two steps */
		1050	backend_modify (EV_A_ fd, anfd->events, 0);
		1051	anfd->events = 0;
		1052	anfd->handle = handle;
		1053	}
		1054	}
		1055	}
		1056	#endif
		1057
944	for (i = 0; i < fdchangecnt; ++i)	1058	for (i = 0; i < fdchangecnt; ++i)
945	{	1059	{
946	int fd = fdchanges [i];	1060	int fd = fdchanges [i];
947	ANFD *anfd = anfds + fd;	1061	ANFD *anfd = anfds + fd;
948	ev_io *w;	1062	ev_io *w;
949		1063
950	unsigned char events = 0;	1064	unsigned char o_events = anfd->events;
		1065	unsigned char o_reify = anfd->reify;
951		1066
952	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	1067	anfd->reify = 0;
953	events \|= (unsigned char)w->events;
954		1068
955	#if EV_SELECT_IS_WINSOCKET	1069	/if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation /
956	if (events)
957	{	1070	{
958	unsigned long arg;	1071	anfd->events = 0;
959	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	1072
960	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	1073	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
		1074	anfd->events \|= (unsigned char)w->events;
		1075
		1076	if (o_events != anfd->events)
		1077	o_reify = EV__IOFDSET; /* actually \|= */
961	}	1078	}
962	#endif
963		1079
964	{	1080	if (o_reify & EV__IOFDSET)
965	unsigned char o_events = anfd->events;
966	unsigned char o_reify = anfd->reify;
967
968	anfd->reify = 0;
969	anfd->events = events;
970
971	if (o_events != events \|\| o_reify & EV__IOFDSET)
972	backend_modify (EV_A_ fd, o_events, events);	1081	backend_modify (EV_A_ fd, o_events, anfd->events);
973	}
974	}	1082	}
975		1083
976	fdchangecnt = 0;	1084	fdchangecnt = 0;
977	}	1085	}
978		1086
…		…
1281	uint64_t counter = 1;	1389	uint64_t counter = 1;
1282	write (evfd, &counter, sizeof (uint64_t));	1390	write (evfd, &counter, sizeof (uint64_t));
1283	}	1391	}
1284	else	1392	else
1285	#endif	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. */
1286	write (evpipe [1], &dummy, 1);	1399	write (evpipe [1], &dummy, 1);
1287		1400
1288	errno = old_errno;	1401	errno = old_errno;
1289	}	1402	}
1290	}	1403	}
…		…
1304	}	1417	}
1305	else	1418	else
1306	#endif	1419	#endif
1307	{	1420	{
1308	char dummy;	1421	char dummy;
		1422	/* see discussion in evpipe_write when you think this read should be recv in win32 */
1309	read (evpipe [0], &dummy, 1);	1423	read (evpipe [0], &dummy, 1);
1310	}	1424	}
1311		1425
		1426	#if EV_SIGNAL_ENABLE
1312	if (sig_pending)	1427	if (sig_pending)
1313	{	1428	{
1314	sig_pending = 0;	1429	sig_pending = 0;
1315		1430
1316	for (i = EV_NSIG - 1; i--; )	1431	for (i = EV_NSIG - 1; i--; )
1317	if (expect_false (signals [i].pending))	1432	if (expect_false (signals [i].pending))
1318	ev_feed_signal_event (EV_A_ i + 1);	1433	ev_feed_signal_event (EV_A_ i + 1);
1319	}	1434	}
		1435	#endif
1320		1436
1321	#if EV_ASYNC_ENABLE	1437	#if EV_ASYNC_ENABLE
1322	if (async_pending)	1438	if (async_pending)
1323	{	1439	{
1324	async_pending = 0;	1440	async_pending = 0;
…		…
1333	#endif	1449	#endif
1334	}	1450	}
1335		1451
1336	/*****************************************************************************/	1452	/*****************************************************************************/
1337		1453
		1454	void
		1455	ev_feed_signal (int signum)
		1456	{
		1457	#if EV_MULTIPLICITY
		1458	EV_P = signals [signum - 1].loop;
		1459
		1460	if (!EV_A)
		1461	return;
		1462	#endif
		1463
		1464	signals [signum - 1].pending = 1;
		1465	evpipe_write (EV_A_ &sig_pending);
		1466	}
		1467
1338	static void	1468	static void
1339	ev_sighandler (int signum)	1469	ev_sighandler (int signum)
1340	{	1470	{
1341	#if EV_MULTIPLICITY
1342	EV_P = signals [signum - 1].loop;
1343	#endif
1344
1345	#ifdef _WIN32	1471	#ifdef _WIN32
1346	signal (signum, ev_sighandler);	1472	signal (signum, ev_sighandler);
1347	#endif	1473	#endif
1348		1474
1349	signals [signum - 1].pending = 1;	1475	ev_feed_signal (signum);
1350	evpipe_write (EV_A_ &sig_pending);
1351	}	1476	}
1352		1477
1353	void noinline	1478	void noinline
1354	ev_feed_signal_event (EV_P_ int signum)	1479	ev_feed_signal_event (EV_P_ int signum)
1355	{	1480	{
…		…
1455		1580
1456	#endif	1581	#endif
1457		1582
1458	/*****************************************************************************/	1583	/*****************************************************************************/
1459		1584
		1585	#if EV_USE_IOCP
		1586	# include "ev_iocp.c"
		1587	#endif
1460	#if EV_USE_PORT	1588	#if EV_USE_PORT
1461	# include "ev_port.c"	1589	# include "ev_port.c"
1462	#endif	1590	#endif
1463	#if EV_USE_KQUEUE	1591	#if EV_USE_KQUEUE
1464	# include "ev_kqueue.c"	1592	# include "ev_kqueue.c"
…		…
1537	ev_embeddable_backends (void)	1665	ev_embeddable_backends (void)
1538	{	1666	{
1539	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;	1667	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
1540		1668
1541	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */	1669	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1542	/* please fix it and tell me how to detect the fix */	1670	if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1543	flags &= ~EVBACKEND_EPOLL;	1671	flags &= ~EVBACKEND_EPOLL;
1544		1672
1545	return flags;	1673	return flags;
1546	}	1674	}
1547		1675
1548	unsigned int	1676	unsigned int
…		…
1604	static void noinline	1732	static void noinline
1605	loop_init (EV_P_ unsigned int flags)	1733	loop_init (EV_P_ unsigned int flags)
1606	{	1734	{
1607	if (!backend)	1735	if (!backend)
1608	{	1736	{
		1737	origflags = flags;
		1738
1609	#if EV_USE_REALTIME	1739	#if EV_USE_REALTIME
1610	if (!have_realtime)	1740	if (!have_realtime)
1611	{	1741	{
1612	struct timespec ts;	1742	struct timespec ts;
1613		1743
…		…
1658	#endif	1788	#endif
1659	#if EV_USE_SIGNALFD	1789	#if EV_USE_SIGNALFD
1660	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;	1790	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1661	#endif	1791	#endif
1662		1792
1663	if (!(flags & 0x0000ffffU))	1793	if (!(flags & EVBACKEND_MASK))
1664	flags \|= ev_recommended_backends ();	1794	flags \|= ev_recommended_backends ();
1665		1795
		1796	#if EV_USE_IOCP
		1797	if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
		1798	#endif
1666	#if EV_USE_PORT	1799	#if EV_USE_PORT
1667	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1800	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1668	#endif	1801	#endif
1669	#if EV_USE_KQUEUE	1802	#if EV_USE_KQUEUE
1670	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1803	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
1687	#endif	1820	#endif
1688	}	1821	}
1689	}	1822	}
1690		1823
1691	/* free up a loop structure */	1824	/* free up a loop structure */
1692	static void noinline	1825	void
1693	loop_destroy (EV_P)	1826	ev_loop_destroy (EV_P)
1694	{	1827	{
1695	int i;	1828	int i;
		1829
		1830	#if EV_MULTIPLICITY
		1831	/* mimic free (0) */
		1832	if (!EV_A)
		1833	return;
		1834	#endif
		1835
		1836	#if EV_CLEANUP_ENABLE
		1837	/* queue cleanup watchers (and execute them) */
		1838	if (expect_false (cleanupcnt))
		1839	{
		1840	queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
		1841	EV_INVOKE_PENDING;
		1842	}
		1843	#endif
		1844
		1845	#if EV_CHILD_ENABLE
		1846	if (ev_is_active (&childev))
		1847	{
		1848	ev_ref (EV_A); /* child watcher */
		1849	ev_signal_stop (EV_A_ &childev);
		1850	}
		1851	#endif
1696		1852
1697	if (ev_is_active (&pipe_w))	1853	if (ev_is_active (&pipe_w))
1698	{	1854	{
1699	/ev_ref (EV_A);/	1855	/ev_ref (EV_A);/
1700	/ev_io_stop (EV_A_ &pipe_w);/	1856	/ev_io_stop (EV_A_ &pipe_w);/
…		…
1722	#endif	1878	#endif
1723		1879
1724	if (backend_fd >= 0)	1880	if (backend_fd >= 0)
1725	close (backend_fd);	1881	close (backend_fd);
1726		1882
		1883	#if EV_USE_IOCP
		1884	if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
		1885	#endif
1727	#if EV_USE_PORT	1886	#if EV_USE_PORT
1728	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1887	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1729	#endif	1888	#endif
1730	#if EV_USE_KQUEUE	1889	#if EV_USE_KQUEUE
1731	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);	1890	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
…		…
1758	array_free (periodic, EMPTY);	1917	array_free (periodic, EMPTY);
1759	#endif	1918	#endif
1760	#if EV_FORK_ENABLE	1919	#if EV_FORK_ENABLE
1761	array_free (fork, EMPTY);	1920	array_free (fork, EMPTY);
1762	#endif	1921	#endif
		1922	#if EV_CLEANUP_ENABLE
		1923	array_free (cleanup, EMPTY);
		1924	#endif
1763	array_free (prepare, EMPTY);	1925	array_free (prepare, EMPTY);
1764	array_free (check, EMPTY);	1926	array_free (check, EMPTY);
1765	#if EV_ASYNC_ENABLE	1927	#if EV_ASYNC_ENABLE
1766	array_free (async, EMPTY);	1928	array_free (async, EMPTY);
1767	#endif	1929	#endif
1768		1930
1769	backend = 0;	1931	backend = 0;
		1932
		1933	#if EV_MULTIPLICITY
		1934	if (ev_is_default_loop (EV_A))
		1935	#endif
		1936	ev_default_loop_ptr = 0;
		1937	#if EV_MULTIPLICITY
		1938	else
		1939	ev_free (EV_A);
		1940	#endif
1770	}	1941	}
1771		1942
1772	#if EV_USE_INOTIFY	1943	#if EV_USE_INOTIFY
1773	inline_size void infy_fork (EV_P);	1944	inline_size void infy_fork (EV_P);
1774	#endif	1945	#endif
…		…
1833	loop_init (EV_A_ flags);	2004	loop_init (EV_A_ flags);
1834		2005
1835	if (ev_backend (EV_A))	2006	if (ev_backend (EV_A))
1836	return EV_A;	2007	return EV_A;
1837		2008
		2009	ev_free (EV_A);
1838	return 0;	2010	return 0;
1839	}	2011	}
1840		2012
1841	void
1842	ev_loop_destroy (EV_P)
1843	{
1844	loop_destroy (EV_A);
1845	ev_free (loop);
1846	}
1847
1848	void
1849	ev_loop_fork (EV_P)
1850	{
1851	postfork = 1; /* must be in line with ev_default_fork */
1852	}
1853	#endif /* multiplicity */	2013	#endif /* multiplicity */
1854		2014
1855	#if EV_VERIFY	2015	#if EV_VERIFY
1856	static void noinline	2016	static void noinline
1857	verify_watcher (EV_P_ W w)	2017	verify_watcher (EV_P_ W w)
…		…
1932	#if EV_FORK_ENABLE	2092	#if EV_FORK_ENABLE
1933	assert (forkmax >= forkcnt);	2093	assert (forkmax >= forkcnt);
1934	array_verify (EV_A_ (W *)forks, forkcnt);	2094	array_verify (EV_A_ (W *)forks, forkcnt);
1935	#endif	2095	#endif
1936		2096
		2097	#if EV_CLEANUP_ENABLE
		2098	assert (cleanupmax >= cleanupcnt);
		2099	array_verify (EV_A_ (W *)cleanups, cleanupcnt);
		2100	#endif
		2101
1937	#if EV_ASYNC_ENABLE	2102	#if EV_ASYNC_ENABLE
1938	assert (asyncmax >= asynccnt);	2103	assert (asyncmax >= asynccnt);
1939	array_verify (EV_A_ (W *)asyncs, asynccnt);	2104	array_verify (EV_A_ (W *)asyncs, asynccnt);
1940	#endif	2105	#endif
1941		2106
…		…
1959	}	2124	}
1960	#endif	2125	#endif
1961		2126
1962	#if EV_MULTIPLICITY	2127	#if EV_MULTIPLICITY
1963	struct ev_loop *	2128	struct ev_loop *
1964	ev_default_loop_init (unsigned int flags)
1965	#else	2129	#else
1966	int	2130	int
		2131	#endif
1967	ev_default_loop (unsigned int flags)	2132	ev_default_loop (unsigned int flags)
1968	#endif
1969	{	2133	{
1970	if (!ev_default_loop_ptr)	2134	if (!ev_default_loop_ptr)
1971	{	2135	{
1972	#if EV_MULTIPLICITY	2136	#if EV_MULTIPLICITY
1973	EV_P = ev_default_loop_ptr = &default_loop_struct;	2137	EV_P = ev_default_loop_ptr = &default_loop_struct;
…		…
1992		2156
1993	return ev_default_loop_ptr;	2157	return ev_default_loop_ptr;
1994	}	2158	}
1995		2159
1996	void	2160	void
1997	ev_default_destroy (void)	2161	ev_loop_fork (EV_P)
1998	{	2162	{
1999	#if EV_MULTIPLICITY
2000	EV_P = ev_default_loop_ptr;
2001	#endif
2002
2003	ev_default_loop_ptr = 0;
2004
2005	#if EV_CHILD_ENABLE
2006	ev_ref (EV_A); /* child watcher */
2007	ev_signal_stop (EV_A_ &childev);
2008	#endif
2009
2010	loop_destroy (EV_A);
2011	}
2012
2013	void
2014	ev_default_fork (void)
2015	{
2016	#if EV_MULTIPLICITY
2017	EV_P = ev_default_loop_ptr;
2018	#endif
2019
2020	postfork = 1; /* must be in line with ev_loop_fork */	2163	postfork = 1; /* must be in line with ev_default_fork */
2021	}	2164	}
2022		2165
2023	/*****************************************************************************/	2166	/*****************************************************************************/
2024		2167
2025	void	2168	void
…		…
2047		2190
2048	for (pri = NUMPRI; pri--; )	2191	for (pri = NUMPRI; pri--; )
2049	while (pendingcnt [pri])	2192	while (pendingcnt [pri])
2050	{	2193	{
2051	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	2194	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
2052
2053	/assert (("libev: non-pending watcher on pending list", p->w->pending));/
2054	/* ^ this is no longer true, as pending_w could be here */
2055		2195
2056	p->w->pending = 0;	2196	p->w->pending = 0;
2057	EV_CB_INVOKE (p->w, p->events);	2197	EV_CB_INVOKE (p->w, p->events);
2058	EV_FREQUENT_CHECK;	2198	EV_FREQUENT_CHECK;
2059	}	2199	}
…		…
2121	feed_reverse_done (EV_A_ EV_TIMER);	2261	feed_reverse_done (EV_A_ EV_TIMER);
2122	}	2262	}
2123	}	2263	}
2124		2264
2125	#if EV_PERIODIC_ENABLE	2265	#if EV_PERIODIC_ENABLE
		2266
		2267	static void noinline
		2268	periodic_recalc (EV_P_ ev_periodic *w)
		2269	{
		2270	ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
		2271	ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
		2272
		2273	/* the above almost always errs on the low side */
		2274	while (at <= ev_rt_now)
		2275	{
		2276	ev_tstamp nat = at + w->interval;
		2277
		2278	/* when resolution fails us, we use ev_rt_now */
		2279	if (expect_false (nat == at))
		2280	{
		2281	at = ev_rt_now;
		2282	break;
		2283	}
		2284
		2285	at = nat;
		2286	}
		2287
		2288	ev_at (w) = at;
		2289	}
		2290
2126	/* make periodics pending */	2291	/* make periodics pending */
2127	inline_size void	2292	inline_size void
2128	periodics_reify (EV_P)	2293	periodics_reify (EV_P)
2129	{	2294	{
2130	EV_FREQUENT_CHECK;	2295	EV_FREQUENT_CHECK;
…		…
2149	ANHE_at_cache (periodics [HEAP0]);	2314	ANHE_at_cache (periodics [HEAP0]);
2150	downheap (periodics, periodiccnt, HEAP0);	2315	downheap (periodics, periodiccnt, HEAP0);
2151	}	2316	}
2152	else if (w->interval)	2317	else if (w->interval)
2153	{	2318	{
2154	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2319	periodic_recalc (EV_A_ w);
2155	/* if next trigger time is not sufficiently in the future, put it there */
2156	/* this might happen because of floating point inexactness */
2157	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2158	{
2159	ev_at (w) += w->interval;
2160
2161	/* if interval is unreasonably low we might still have a time in the past */
2162	/* so correct this. this will make the periodic very inexact, but the user */
2163	/* has effectively asked to get triggered more often than possible */
2164	if (ev_at (w) < ev_rt_now)
2165	ev_at (w) = ev_rt_now;
2166	}
2167
2168	ANHE_at_cache (periodics [HEAP0]);	2320	ANHE_at_cache (periodics [HEAP0]);
2169	downheap (periodics, periodiccnt, HEAP0);	2321	downheap (periodics, periodiccnt, HEAP0);
2170	}	2322	}
2171	else	2323	else
2172	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	2324	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
…		…
2193	ev_periodic w = (ev_periodic )ANHE_w (periodics [i]);	2345	ev_periodic w = (ev_periodic )ANHE_w (periodics [i]);
2194		2346
2195	if (w->reschedule_cb)	2347	if (w->reschedule_cb)
2196	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2348	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2197	else if (w->interval)	2349	else if (w->interval)
2198	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2350	periodic_recalc (EV_A_ w);
2199		2351
2200	ANHE_at_cache (periodics [i]);	2352	ANHE_at_cache (periodics [i]);
2201	}	2353	}
2202		2354
2203	reheap (periodics, periodiccnt);	2355	reheap (periodics, periodiccnt);
…		…
2250	* doesn't hurt either as we only do this on time-jumps or	2402	* doesn't hurt either as we only do this on time-jumps or
2251	* in the unlikely event of having been preempted here.	2403	* in the unlikely event of having been preempted here.
2252	*/	2404	*/
2253	for (i = 4; --i; )	2405	for (i = 4; --i; )
2254	{	2406	{
		2407	ev_tstamp diff;
2255	rtmn_diff = ev_rt_now - mn_now;	2408	rtmn_diff = ev_rt_now - mn_now;
2256		2409
		2410	diff = odiff - rtmn_diff;
		2411
2257	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))	2412	if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2258	return; /* all is well */	2413	return; /* all is well */
2259		2414
2260	ev_rt_now = ev_time ();	2415	ev_rt_now = ev_time ();
2261	mn_now = get_clock ();	2416	mn_now = get_clock ();
2262	now_floor = mn_now;	2417	now_floor = mn_now;
…		…
2285	mn_now = ev_rt_now;	2440	mn_now = ev_rt_now;
2286	}	2441	}
2287	}	2442	}
2288		2443
2289	void	2444	void
2290	ev_loop (EV_P_ int flags)	2445	ev_run (EV_P_ int flags)
2291	{	2446	{
2292	#if EV_FEATURE_API	2447	#if EV_FEATURE_API
2293	++loop_depth;	2448	++loop_depth;
2294	#endif	2449	#endif
2295		2450
2296	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));	2451	assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2297		2452
2298	loop_done = EVUNLOOP_CANCEL;	2453	loop_done = EVBREAK_CANCEL;
2299		2454
2300	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */	2455	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2301		2456
2302	do	2457	do
2303	{	2458	{
…		…
2346	/* calculate blocking time */	2501	/* calculate blocking time */
2347	{	2502	{
2348	ev_tstamp waittime = 0.;	2503	ev_tstamp waittime = 0.;
2349	ev_tstamp sleeptime = 0.;	2504	ev_tstamp sleeptime = 0.;
2350		2505
		2506	/* remember old timestamp for io_blocktime calculation */
		2507	ev_tstamp prev_mn_now = mn_now;
		2508
		2509	/* update time to cancel out callback processing overhead */
		2510	time_update (EV_A_ 1e100);
		2511
2351	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))	2512	if (expect_true (!(flags & EVRUN_NOWAIT \|\| idleall \|\| !activecnt)))
2352	{	2513	{
2353	/* remember old timestamp for io_blocktime calculation */
2354	ev_tstamp prev_mn_now = mn_now;
2355
2356	/* update time to cancel out callback processing overhead */
2357	time_update (EV_A_ 1e100);
2358
2359	waittime = MAX_BLOCKTIME;	2514	waittime = MAX_BLOCKTIME;
2360		2515
2361	if (timercnt)	2516	if (timercnt)
2362	{	2517	{
2363	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;	2518	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
…		…
2393	}	2548	}
2394		2549
2395	#if EV_FEATURE_API	2550	#if EV_FEATURE_API
2396	++loop_count;	2551	++loop_count;
2397	#endif	2552	#endif
2398	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */	2553	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2399	backend_poll (EV_A_ waittime);	2554	backend_poll (EV_A_ waittime);
2400	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */	2555	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2401		2556
2402	/* update ev_rt_now, do magic */	2557	/* update ev_rt_now, do magic */
2403	time_update (EV_A_ waittime + sleeptime);	2558	time_update (EV_A_ waittime + sleeptime);
2404	}	2559	}
2405		2560
…		…
2423	EV_INVOKE_PENDING;	2578	EV_INVOKE_PENDING;
2424	}	2579	}
2425	while (expect_true (	2580	while (expect_true (
2426	activecnt	2581	activecnt
2427	&& !loop_done	2582	&& !loop_done
2428	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))	2583	&& !(flags & (EVRUN_ONCE \| EVRUN_NOWAIT))
2429	));	2584	));
2430		2585
2431	if (loop_done == EVUNLOOP_ONE)	2586	if (loop_done == EVBREAK_ONE)
2432	loop_done = EVUNLOOP_CANCEL;	2587	loop_done = EVBREAK_CANCEL;
2433		2588
2434	#if EV_FEATURE_API	2589	#if EV_FEATURE_API
2435	--loop_depth;	2590	--loop_depth;
2436	#endif	2591	#endif
2437	}	2592	}
2438		2593
2439	void	2594	void
2440	ev_unloop (EV_P_ int how)	2595	ev_break (EV_P_ int how)
2441	{	2596	{
2442	loop_done = how;	2597	loop_done = how;
2443	}	2598	}
2444		2599
2445	void	2600	void
…		…
2593	EV_FREQUENT_CHECK;	2748	EV_FREQUENT_CHECK;
2594		2749
2595	wlist_del (&anfds[w->fd].head, (WL)w);	2750	wlist_del (&anfds[w->fd].head, (WL)w);
2596	ev_stop (EV_A_ (W)w);	2751	ev_stop (EV_A_ (W)w);
2597		2752
2598	fd_change (EV_A_ w->fd, 1);	2753	fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2599		2754
2600	EV_FREQUENT_CHECK;	2755	EV_FREQUENT_CHECK;
2601	}	2756	}
2602		2757
2603	void noinline	2758	void noinline
…		…
2695	if (w->reschedule_cb)	2850	if (w->reschedule_cb)
2696	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2851	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2697	else if (w->interval)	2852	else if (w->interval)
2698	{	2853	{
2699	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));	2854	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2700	/* this formula differs from the one in periodic_reify because we do not always round up */	2855	periodic_recalc (EV_A_ w);
2701	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2702	}	2856	}
2703	else	2857	else
2704	ev_at (w) = w->offset;	2858	ev_at (w) = w->offset;
2705		2859
2706	EV_FREQUENT_CHECK;	2860	EV_FREQUENT_CHECK;
…		…
2827	sa.sa_handler = ev_sighandler;	2981	sa.sa_handler = ev_sighandler;
2828	sigfillset (&sa.sa_mask);	2982	sigfillset (&sa.sa_mask);
2829	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2983	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2830	sigaction (w->signum, &sa, 0);	2984	sigaction (w->signum, &sa, 0);
2831		2985
		2986	if (origflags & EVFLAG_NOSIGMASK)
		2987	{
2832	sigemptyset (&sa.sa_mask);	2988	sigemptyset (&sa.sa_mask);
2833	sigaddset (&sa.sa_mask, w->signum);	2989	sigaddset (&sa.sa_mask, w->signum);
2834	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);	2990	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
		2991	}
2835	#endif	2992	#endif
2836	}	2993	}
2837		2994
2838	EV_FREQUENT_CHECK;	2995	EV_FREQUENT_CHECK;
2839	}	2996	}
…		…
2980	if (!pend \|\| pend == path)	3137	if (!pend \|\| pend == path)
2981	break;	3138	break;
2982		3139
2983	*pend = 0;	3140	*pend = 0;
2984	w->wd = inotify_add_watch (fs_fd, path, mask);	3141	w->wd = inotify_add_watch (fs_fd, path, mask);
2985	}	3142	}
2986	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	3143	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
2987	}	3144	}
2988	}	3145	}
2989		3146
2990	if (w->wd >= 0)	3147	if (w->wd >= 0)
…		…
3055	{	3212	{
3056	struct inotify_event ev = (struct inotify_event )(buf + ofs);	3213	struct inotify_event ev = (struct inotify_event )(buf + ofs);
3057	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3214	infy_wd (EV_A_ ev->wd, ev->wd, ev);
3058	ofs += sizeof (struct inotify_event) + ev->len;	3215	ofs += sizeof (struct inotify_event) + ev->len;
3059	}	3216	}
3060	}
3061
3062	inline_size unsigned int
3063	ev_linux_version (void)
3064	{
3065	struct utsname buf;
3066	unsigned int v;
3067	int i;
3068	char *p = buf.release;
3069
3070	if (uname (&buf))
3071	return 0;
3072
3073	for (i = 3+1; --i; )
3074	{
3075	unsigned int c = 0;
3076
3077	for (;;)
3078	{
3079	if (p >= '0' && p <= '9')
3080	c = c * 10 + *p++ - '0';
3081	else
3082	{
3083	p += *p == '.';
3084	break;
3085	}
3086	}
3087
3088	v = (v << 8) \| c;
3089	}
3090
3091	return v;
3092	}	3217	}
3093		3218
3094	inline_size void	3219	inline_size void
3095	ev_check_2625 (EV_P)	3220	ev_check_2625 (EV_P)
3096	{	3221	{
…		…
3420		3545
3421	#if EV_EMBED_ENABLE	3546	#if EV_EMBED_ENABLE
3422	void noinline	3547	void noinline
3423	ev_embed_sweep (EV_P_ ev_embed *w)	3548	ev_embed_sweep (EV_P_ ev_embed *w)
3424	{	3549	{
3425	ev_loop (w->other, EVLOOP_NONBLOCK);	3550	ev_run (w->other, EVRUN_NOWAIT);
3426	}	3551	}
3427		3552
3428	static void	3553	static void
3429	embed_io_cb (EV_P_ ev_io *io, int revents)	3554	embed_io_cb (EV_P_ ev_io *io, int revents)
3430	{	3555	{
3431	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	3556	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
3432		3557
3433	if (ev_cb (w))	3558	if (ev_cb (w))
3434	ev_feed_event (EV_A_ (W)w, EV_EMBED);	3559	ev_feed_event (EV_A_ (W)w, EV_EMBED);
3435	else	3560	else
3436	ev_loop (w->other, EVLOOP_NONBLOCK);	3561	ev_run (w->other, EVRUN_NOWAIT);
3437	}	3562	}
3438		3563
3439	static void	3564	static void
3440	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3565	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3441	{	3566	{
…		…
3445	EV_P = w->other;	3570	EV_P = w->other;
3446		3571
3447	while (fdchangecnt)	3572	while (fdchangecnt)
3448	{	3573	{
3449	fd_reify (EV_A);	3574	fd_reify (EV_A);
3450	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3575	ev_run (EV_A_ EVRUN_NOWAIT);
3451	}	3576	}
3452	}	3577	}
3453	}	3578	}
3454		3579
3455	static void	3580	static void
…		…
3461		3586
3462	{	3587	{
3463	EV_P = w->other;	3588	EV_P = w->other;
3464		3589
3465	ev_loop_fork (EV_A);	3590	ev_loop_fork (EV_A);
3466	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3591	ev_run (EV_A_ EVRUN_NOWAIT);
3467	}	3592	}
3468		3593
3469	ev_embed_start (EV_A_ w);	3594	ev_embed_start (EV_A_ w);
3470	}	3595	}
3471		3596
…		…
3563		3688
3564	EV_FREQUENT_CHECK;	3689	EV_FREQUENT_CHECK;
3565	}	3690	}
3566	#endif	3691	#endif
3567		3692
3568	#if EV_ASYNC_ENABLE	3693	#if EV_CLEANUP_ENABLE
3569	void	3694	void
3570	ev_async_start (EV_P_ ev_async *w)	3695	ev_cleanup_start (EV_P_ ev_cleanup *w)
3571	{	3696	{
3572	if (expect_false (ev_is_active (w)))	3697	if (expect_false (ev_is_active (w)))
3573	return;	3698	return;
		3699
		3700	EV_FREQUENT_CHECK;
		3701
		3702	ev_start (EV_A_ (W)w, ++cleanupcnt);
		3703	array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
		3704	cleanups [cleanupcnt - 1] = w;
		3705
		3706	/* cleanup watchers should never keep a refcount on the loop */
		3707	ev_unref (EV_A);
		3708	EV_FREQUENT_CHECK;
		3709	}
		3710
		3711	void
		3712	ev_cleanup_stop (EV_P_ ev_cleanup *w)
		3713	{
		3714	clear_pending (EV_A_ (W)w);
		3715	if (expect_false (!ev_is_active (w)))
		3716	return;
		3717
		3718	EV_FREQUENT_CHECK;
		3719	ev_ref (EV_A);
		3720
		3721	{
		3722	int active = ev_active (w);
		3723
		3724	cleanups [active - 1] = cleanups [--cleanupcnt];
		3725	ev_active (cleanups [active - 1]) = active;
		3726	}
		3727
		3728	ev_stop (EV_A_ (W)w);
		3729
		3730	EV_FREQUENT_CHECK;
		3731	}
		3732	#endif
		3733
		3734	#if EV_ASYNC_ENABLE
		3735	void
		3736	ev_async_start (EV_P_ ev_async *w)
		3737	{
		3738	if (expect_false (ev_is_active (w)))
		3739	return;
		3740
		3741	w->sent = 0;
3574		3742
3575	evpipe_init (EV_A);	3743	evpipe_init (EV_A);
3576		3744
3577	EV_FREQUENT_CHECK;	3745	EV_FREQUENT_CHECK;
3578		3746
…		…
3798		3966
3799	#if EV_MULTIPLICITY	3967	#if EV_MULTIPLICITY
3800	#include "ev_wrap.h"	3968	#include "ev_wrap.h"
3801	#endif	3969	#endif
3802		3970
3803	#ifdef __cplusplus	3971	EV_CPP(})
3804	}
3805	#endif
3806		3972

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Comparing libev/ev.c (file contents): Revision 1.345 by sf-exg, Sat Jul 31 22:33:26 2010 UTC vs. Revision 1.373 by root, Sun Feb 20 02:56:23 2011 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.345 by sf-exg, Sat Jul 31 22:33:26 2010 UTC vs.
Revision 1.373 by root, Sun Feb 20 02:56:23 2011 UTC