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

Comparing libev/ev.c (file contents):
Revision 1.343 by root, Fri Apr 2 21:03:46 2010 UTC vs.
Revision 1.374 by root, Sat Feb 26 15:21:01 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>
…		…
195	# ifndef EV_SELECT_IS_WINSOCKET	198	# ifndef EV_SELECT_IS_WINSOCKET
196	# define EV_SELECT_IS_WINSOCKET 1	199	# define EV_SELECT_IS_WINSOCKET 1
197	# endif	200	# endif
198	# undef EV_AVOID_STDIO	201	# undef EV_AVOID_STDIO
199	#endif	202	#endif
		203
		204	/* OS X, in its infinite idiocy, actually HARDCODES
		205	* a limit of 1024 into their select. Where people have brains,
		206	* OS X engineers apparently have a vacuum. Or maybe they were
		207	* ordered to have a vacuum, or they do anything for money.
		208	* This might help. Or not.
		209	*/
		210	#define _DARWIN_UNLIMITED_SELECT 1
200		211
201	/* this block tries to deduce configuration from header-defined symbols and defaults */	212	/* this block tries to deduce configuration from header-defined symbols and defaults */
202		213
203	/* try to deduce the maximum number of signals on this platform */	214	/* try to deduce the maximum number of signals on this platform */
204	#if defined (EV_NSIG)	215	#if defined (EV_NSIG)
…		…
226	/* to make it compile regardless, just remove the above line, */	237	/* to make it compile regardless, just remove the above line, */
227	/* but consider reporting it, too! :) */	238	/* but consider reporting it, too! :) */
228	# define EV_NSIG 65	239	# define EV_NSIG 65
229	#endif	240	#endif
230		241
		242	#ifndef EV_USE_FLOOR
		243	# define EV_USE_FLOOR 0
		244	#endif
		245
231	#ifndef EV_USE_CLOCK_SYSCALL	246	#ifndef EV_USE_CLOCK_SYSCALL
232	# if __linux && __GLIBC__ >= 2	247	# if __linux && __GLIBC__ >= 2
233	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS	248	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
234	# else	249	# else
235	# define EV_USE_CLOCK_SYSCALL 0	250	# define EV_USE_CLOCK_SYSCALL 0
…		…
370	# undef EV_USE_INOTIFY	385	# undef EV_USE_INOTIFY
371	# define EV_USE_INOTIFY 0	386	# define EV_USE_INOTIFY 0
372	#endif	387	#endif
373		388
374	#if !EV_USE_NANOSLEEP	389	#if !EV_USE_NANOSLEEP
375	# ifndef _WIN32	390	/* hp-ux has it in sys/time.h, which we unconditionally include above */
		391	# if !defined(_WIN32) && !defined(__hpux)
376	# include <sys/select.h>	392	# include <sys/select.h>
377	# endif	393	# endif
378	#endif	394	#endif
379		395
380	#if EV_USE_INOTIFY	396	#if EV_USE_INOTIFY
381	# include <sys/utsname.h>
382	# include <sys/statfs.h>	397	# include <sys/statfs.h>
383	# include <sys/inotify.h>	398	# include <sys/inotify.h>
384	/* 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 */
385	# ifndef IN_DONT_FOLLOW	400	# ifndef IN_DONT_FOLLOW
386	# undef EV_USE_INOTIFY	401	# undef EV_USE_INOTIFY
…		…
403	# define EFD_CLOEXEC O_CLOEXEC	418	# define EFD_CLOEXEC O_CLOEXEC
404	# else	419	# else
405	# define EFD_CLOEXEC 02000000	420	# define EFD_CLOEXEC 02000000
406	# endif	421	# endif
407	# endif	422	# endif
408	# ifdef __cplusplus
409	extern "C" {
410	# endif
411	int (eventfd) (unsigned int initval, int flags);	423	EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
412	# ifdef __cplusplus
413	}
414	# endif
415	#endif	424	#endif
416		425
417	#if EV_USE_SIGNALFD	426	#if EV_USE_SIGNALFD
418	/* 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 */
419	# include <stdint.h>	428	# include <stdint.h>
…		…
425	# define SFD_CLOEXEC O_CLOEXEC	434	# define SFD_CLOEXEC O_CLOEXEC
426	# else	435	# else
427	# define SFD_CLOEXEC 02000000	436	# define SFD_CLOEXEC 02000000
428	# endif	437	# endif
429	# endif	438	# endif
430	# ifdef __cplusplus
431	extern "C" {
432	# endif
433	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);
434		440
435	struct signalfd_siginfo	441	struct signalfd_siginfo
436	{	442	{
437	uint32_t ssi_signo;	443	uint32_t ssi_signo;
438	char pad[128 - sizeof (uint32_t)];	444	char pad[128 - sizeof (uint32_t)];
439	};	445	};
440	# ifdef __cplusplus
441	}
442	# endif	446	#endif
443	#endif
444
445		447
446	/**/	448	/**/
447		449
448	#if EV_VERIFY >= 3	450	#if EV_VERIFY >= 3
449	# define EV_FREQUENT_CHECK ev_verify (EV_A)	451	# define EV_FREQUENT_CHECK ev_verify (EV_A)
450	#else	452	#else
451	# define EV_FREQUENT_CHECK do { } while (0)	453	# define EV_FREQUENT_CHECK do { } while (0)
452	#endif	454	#endif
453		455
454	/*	456	/*
455	* This is used to avoid floating point rounding problems.	457	* This is used to work around floating point rounding problems.
456	* It is added to ev_rt_now when scheduling periodics
457	* to ensure progress, time-wise, even when rounding
458	* errors are against us.
459	* This value is good at least till the year 4000.	458	* This value is good at least till the year 4000.
460	* Better solutions welcome.
461	*/	459	*/
462	#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 /
463		462
464	#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) */
465	#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)
466		468
467	#if __GNUC__ >= 4	469	#if __GNUC__ >= 4
468	# define expect(expr,value) __builtin_expect ((expr),(value))	470	# define expect(expr,value) __builtin_expect ((expr),(value))
469	# define noinline __attribute__ ((noinline))	471	# define noinline __attribute__ ((noinline))
470	#else	472	#else
…		…
503	#define ev_active(w) ((W)(w))->active	505	#define ev_active(w) ((W)(w))->active
504	#define ev_at(w) ((WT)(w))->at	506	#define ev_at(w) ((WT)(w))->at
505		507
506	#if EV_USE_REALTIME	508	#if EV_USE_REALTIME
507	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	509	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
508	/* giving it a reasonably high chance of working on typical architetcures */	510	/* giving it a reasonably high chance of working on typical architectures */
509	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */	511	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
510	#endif	512	#endif
511		513
512	#if EV_USE_MONOTONIC	514	#if EV_USE_MONOTONIC
513	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	515	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
…		…
524	#endif	526	#endif
525		527
526	#ifdef _WIN32	528	#ifdef _WIN32
527	# include "ev_win32.c"	529	# include "ev_win32.c"
528	#endif	530	#endif
		531
		532	/*****************************************************************************/
		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	}
529		621
530	/*****************************************************************************/	622	/*****************************************************************************/
531		623
532	#if EV_AVOID_STDIO	624	#if EV_AVOID_STDIO
533	static void noinline	625	static void noinline
…		…
554	if (syserr_cb)	646	if (syserr_cb)
555	syserr_cb (msg);	647	syserr_cb (msg);
556	else	648	else
557	{	649	{
558	#if EV_AVOID_STDIO	650	#if EV_AVOID_STDIO
559	const char *err = strerror (errno);
560
561	ev_printerr (msg);	651	ev_printerr (msg);
562	ev_printerr (": ");	652	ev_printerr (": ");
563	ev_printerr (err);	653	ev_printerr (strerror (errno));
564	ev_printerr ("\n");	654	ev_printerr ("\n");
565	#else	655	#else
566	perror (msg);	656	perror (msg);
567	#endif	657	#endif
568	abort ();	658	abort ();
…		…
602	ptr = alloc (ptr, size);	692	ptr = alloc (ptr, size);
603		693
604	if (!ptr && size)	694	if (!ptr && size)
605	{	695	{
606	#if EV_AVOID_STDIO	696	#if EV_AVOID_STDIO
607	ev_printerr ("libev: memory allocation failed, aborting.\n");	697	ev_printerr ("(libev) memory allocation failed, aborting.\n");
608	#else	698	#else
609	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	699	fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
610	#endif	700	#endif
611	abort ();	701	abort ();
612	}	702	}
613		703
614	return ptr;	704	return ptr;
…		…
631	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 */
632	unsigned char unused;	722	unsigned char unused;
633	#if EV_USE_EPOLL	723	#if EV_USE_EPOLL
634	unsigned int egen; /* generation counter to counter epoll bugs */	724	unsigned int egen; /* generation counter to counter epoll bugs */
635	#endif	725	#endif
636	#if EV_SELECT_IS_WINSOCKET	726	#if EV_SELECT_IS_WINSOCKET \|\| EV_USE_IOCP
637	SOCKET handle;	727	SOCKET handle;
		728	#endif
		729	#if EV_USE_IOCP
		730	OVERLAPPED or, ow;
638	#endif	731	#endif
639	} ANFD;	732	} ANFD;
640		733
641	/* stores the pending event set for a given watcher */	734	/* stores the pending event set for a given watcher */
642	typedef struct	735	typedef struct
…		…
707	# define EV_RELEASE_CB (void)0	800	# define EV_RELEASE_CB (void)0
708	# define EV_ACQUIRE_CB (void)0	801	# define EV_ACQUIRE_CB (void)0
709	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)	802	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
710	#endif	803	#endif
711		804
712	#define EVUNLOOP_RECURSE 0x80	805	#define EVBREAK_RECURSE 0x80
713		806
714	/*****************************************************************************/	807	/*****************************************************************************/
715		808
716	#ifndef EV_HAVE_EV_TIME	809	#ifndef EV_HAVE_EV_TIME
717	ev_tstamp	810	ev_tstamp
…		…
761	if (delay > 0.)	854	if (delay > 0.)
762	{	855	{
763	#if EV_USE_NANOSLEEP	856	#if EV_USE_NANOSLEEP
764	struct timespec ts;	857	struct timespec ts;
765		858
766	ts.tv_sec = (time_t)delay;	859	EV_TS_SET (ts, delay);
767	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
768
769	nanosleep (&ts, 0);	860	nanosleep (&ts, 0);
770	#elif defined(_WIN32)	861	#elif defined(_WIN32)
771	Sleep ((unsigned long)(delay * 1e3));	862	Sleep ((unsigned long)(delay * 1e3));
772	#else	863	#else
773	struct timeval tv;	864	struct timeval tv;
774		865
775	tv.tv_sec = (time_t)delay;
776	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
777
778	/* 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 */
779	/* something not guaranteed by newer posix versions, but guaranteed */	867	/* something not guaranteed by newer posix versions, but guaranteed */
780	/* by older ones */	868	/* by older ones */
		869	EV_TV_SET (tv, delay);
781	select (0, 0, 0, 0, &tv);	870	select (0, 0, 0, 0, &tv);
782	#endif	871	#endif
783	}	872	}
784	}	873	}
785		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;
		881	}
		882
786	/*****************************************************************************/	883	/*****************************************************************************/
787		884
788	#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 /
789		886
790	/* find a suitable new size for the given array, */	887	/* find a suitable new size for the given array, */
791	/* hopefully by rounding to a ncie-to-malloc size */	888	/* hopefully by rounding to a nice-to-malloc size */
792	inline_size int	889	inline_size int
793	array_nextsize (int elem, int cur, int cnt)	890	array_nextsize (int elem, int cur, int cnt)
794	{	891	{
795	int ncur = cur + 1;	892	int ncur = cur + 1;
796		893
…		…
931	inline_size void	1028	inline_size void
932	fd_reify (EV_P)	1029	fd_reify (EV_P)
933	{	1030	{
934	int i;	1031	int i;
935		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 && anfd->head)
		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
936	for (i = 0; i < fdchangecnt; ++i)	1058	for (i = 0; i < fdchangecnt; ++i)
937	{	1059	{
938	int fd = fdchanges [i];	1060	int fd = fdchanges [i];
939	ANFD *anfd = anfds + fd;	1061	ANFD *anfd = anfds + fd;
940	ev_io *w;	1062	ev_io *w;
941		1063
942	unsigned char events = 0;	1064	unsigned char o_events = anfd->events;
		1065	unsigned char o_reify = anfd->reify;
943		1066
944	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	1067	anfd->reify = 0;
945	events \|= (unsigned char)w->events;
946		1068
947	#if EV_SELECT_IS_WINSOCKET	1069	/if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation /
948	if (events)
949	{	1070	{
950	unsigned long arg;	1071	anfd->events = 0;
951	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	1072
952	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 \|= */
953	}	1078	}
954	#endif
955		1079
956	{	1080	if (o_reify & EV__IOFDSET)
957	unsigned char o_events = anfd->events;
958	unsigned char o_reify = anfd->reify;
959
960	anfd->reify = 0;
961	anfd->events = events;
962
963	if (o_events != events \|\| o_reify & EV__IOFDSET)
964	backend_modify (EV_A_ fd, o_events, events);	1081	backend_modify (EV_A_ fd, o_events, anfd->events);
965	}
966	}	1082	}
967		1083
968	fdchangecnt = 0;	1084	fdchangecnt = 0;
969	}	1085	}
970		1086
…		…
1063	}	1179	}
1064		1180
1065	/*****************************************************************************/	1181	/*****************************************************************************/
1066		1182
1067	/*	1183	/*
1068	* the heap functions want a real array index. array index 0 uis guaranteed to not	1184	* the heap functions want a real array index. array index 0 is guaranteed to not
1069	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives	1185	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1070	* the branching factor of the d-tree.	1186	* the branching factor of the d-tree.
1071	*/	1187	*/
1072		1188
1073	/*	1189	/*
…		…
1273	uint64_t counter = 1;	1389	uint64_t counter = 1;
1274	write (evfd, &counter, sizeof (uint64_t));	1390	write (evfd, &counter, sizeof (uint64_t));
1275	}	1391	}
1276	else	1392	else
1277	#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. */
1278	write (evpipe [1], &dummy, 1);	1399	write (evpipe [1], &dummy, 1);
1279		1400
1280	errno = old_errno;	1401	errno = old_errno;
1281	}	1402	}
1282	}	1403	}
…		…
1296	}	1417	}
1297	else	1418	else
1298	#endif	1419	#endif
1299	{	1420	{
1300	char dummy;	1421	char dummy;
		1422	/* see discussion in evpipe_write when you think this read should be recv in win32 */
1301	read (evpipe [0], &dummy, 1);	1423	read (evpipe [0], &dummy, 1);
1302	}	1424	}
1303		1425
		1426	#if EV_SIGNAL_ENABLE
1304	if (sig_pending)	1427	if (sig_pending)
1305	{	1428	{
1306	sig_pending = 0;	1429	sig_pending = 0;
1307		1430
1308	for (i = EV_NSIG - 1; i--; )	1431	for (i = EV_NSIG - 1; i--; )
1309	if (expect_false (signals [i].pending))	1432	if (expect_false (signals [i].pending))
1310	ev_feed_signal_event (EV_A_ i + 1);	1433	ev_feed_signal_event (EV_A_ i + 1);
1311	}	1434	}
		1435	#endif
1312		1436
1313	#if EV_ASYNC_ENABLE	1437	#if EV_ASYNC_ENABLE
1314	if (async_pending)	1438	if (async_pending)
1315	{	1439	{
1316	async_pending = 0;	1440	async_pending = 0;
…		…
1325	#endif	1449	#endif
1326	}	1450	}
1327		1451
1328	/*****************************************************************************/	1452	/*****************************************************************************/
1329		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
1330	static void	1468	static void
1331	ev_sighandler (int signum)	1469	ev_sighandler (int signum)
1332	{	1470	{
1333	#if EV_MULTIPLICITY
1334	EV_P = signals [signum - 1].loop;
1335	#endif
1336
1337	#ifdef _WIN32	1471	#ifdef _WIN32
1338	signal (signum, ev_sighandler);	1472	signal (signum, ev_sighandler);
1339	#endif	1473	#endif
1340		1474
1341	signals [signum - 1].pending = 1;	1475	ev_feed_signal (signum);
1342	evpipe_write (EV_A_ &sig_pending);
1343	}	1476	}
1344		1477
1345	void noinline	1478	void noinline
1346	ev_feed_signal_event (EV_P_ int signum)	1479	ev_feed_signal_event (EV_P_ int signum)
1347	{	1480	{
…		…
1447		1580
1448	#endif	1581	#endif
1449		1582
1450	/*****************************************************************************/	1583	/*****************************************************************************/
1451		1584
		1585	#if EV_USE_IOCP
		1586	# include "ev_iocp.c"
		1587	#endif
1452	#if EV_USE_PORT	1588	#if EV_USE_PORT
1453	# include "ev_port.c"	1589	# include "ev_port.c"
1454	#endif	1590	#endif
1455	#if EV_USE_KQUEUE	1591	#if EV_USE_KQUEUE
1456	# include "ev_kqueue.c"	1592	# include "ev_kqueue.c"
…		…
1529	ev_embeddable_backends (void)	1665	ev_embeddable_backends (void)
1530	{	1666	{
1531	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;	1667	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
1532		1668
1533	/* 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 */
1534	/* please fix it and tell me how to detect the fix */	1670	if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1535	flags &= ~EVBACKEND_EPOLL;	1671	flags &= ~EVBACKEND_EPOLL;
1536		1672
1537	return flags;	1673	return flags;
1538	}	1674	}
1539		1675
1540	unsigned int	1676	unsigned int
…		…
1596	static void noinline	1732	static void noinline
1597	loop_init (EV_P_ unsigned int flags)	1733	loop_init (EV_P_ unsigned int flags)
1598	{	1734	{
1599	if (!backend)	1735	if (!backend)
1600	{	1736	{
		1737	origflags = flags;
		1738
1601	#if EV_USE_REALTIME	1739	#if EV_USE_REALTIME
1602	if (!have_realtime)	1740	if (!have_realtime)
1603	{	1741	{
1604	struct timespec ts;	1742	struct timespec ts;
1605		1743
…		…
1650	#endif	1788	#endif
1651	#if EV_USE_SIGNALFD	1789	#if EV_USE_SIGNALFD
1652	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;	1790	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1653	#endif	1791	#endif
1654		1792
1655	if (!(flags & 0x0000ffffU))	1793	if (!(flags & EVBACKEND_MASK))
1656	flags \|= ev_recommended_backends ();	1794	flags \|= ev_recommended_backends ();
1657		1795
		1796	#if EV_USE_IOCP
		1797	if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
		1798	#endif
1658	#if EV_USE_PORT	1799	#if EV_USE_PORT
1659	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1800	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1660	#endif	1801	#endif
1661	#if EV_USE_KQUEUE	1802	#if EV_USE_KQUEUE
1662	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1803	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
1679	#endif	1820	#endif
1680	}	1821	}
1681	}	1822	}
1682		1823
1683	/* free up a loop structure */	1824	/* free up a loop structure */
1684	static void noinline	1825	void
1685	loop_destroy (EV_P)	1826	ev_loop_destroy (EV_P)
1686	{	1827	{
1687	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
1688		1852
1689	if (ev_is_active (&pipe_w))	1853	if (ev_is_active (&pipe_w))
1690	{	1854	{
1691	/ev_ref (EV_A);/	1855	/ev_ref (EV_A);/
1692	/ev_io_stop (EV_A_ &pipe_w);/	1856	/ev_io_stop (EV_A_ &pipe_w);/
…		…
1714	#endif	1878	#endif
1715		1879
1716	if (backend_fd >= 0)	1880	if (backend_fd >= 0)
1717	close (backend_fd);	1881	close (backend_fd);
1718		1882
		1883	#if EV_USE_IOCP
		1884	if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
		1885	#endif
1719	#if EV_USE_PORT	1886	#if EV_USE_PORT
1720	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1887	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1721	#endif	1888	#endif
1722	#if EV_USE_KQUEUE	1889	#if EV_USE_KQUEUE
1723	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);	1890	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
…		…
1750	array_free (periodic, EMPTY);	1917	array_free (periodic, EMPTY);
1751	#endif	1918	#endif
1752	#if EV_FORK_ENABLE	1919	#if EV_FORK_ENABLE
1753	array_free (fork, EMPTY);	1920	array_free (fork, EMPTY);
1754	#endif	1921	#endif
		1922	#if EV_CLEANUP_ENABLE
		1923	array_free (cleanup, EMPTY);
		1924	#endif
1755	array_free (prepare, EMPTY);	1925	array_free (prepare, EMPTY);
1756	array_free (check, EMPTY);	1926	array_free (check, EMPTY);
1757	#if EV_ASYNC_ENABLE	1927	#if EV_ASYNC_ENABLE
1758	array_free (async, EMPTY);	1928	array_free (async, EMPTY);
1759	#endif	1929	#endif
1760		1930
1761	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
1762	}	1941	}
1763		1942
1764	#if EV_USE_INOTIFY	1943	#if EV_USE_INOTIFY
1765	inline_size void infy_fork (EV_P);	1944	inline_size void infy_fork (EV_P);
1766	#endif	1945	#endif
…		…
1825	loop_init (EV_A_ flags);	2004	loop_init (EV_A_ flags);
1826		2005
1827	if (ev_backend (EV_A))	2006	if (ev_backend (EV_A))
1828	return EV_A;	2007	return EV_A;
1829		2008
		2009	ev_free (EV_A);
1830	return 0;	2010	return 0;
1831	}	2011	}
1832		2012
1833	void
1834	ev_loop_destroy (EV_P)
1835	{
1836	loop_destroy (EV_A);
1837	ev_free (loop);
1838	}
1839
1840	void
1841	ev_loop_fork (EV_P)
1842	{
1843	postfork = 1; /* must be in line with ev_default_fork */
1844	}
1845	#endif /* multiplicity */	2013	#endif /* multiplicity */
1846		2014
1847	#if EV_VERIFY	2015	#if EV_VERIFY
1848	static void noinline	2016	static void noinline
1849	verify_watcher (EV_P_ W w)	2017	verify_watcher (EV_P_ W w)
…		…
1924	#if EV_FORK_ENABLE	2092	#if EV_FORK_ENABLE
1925	assert (forkmax >= forkcnt);	2093	assert (forkmax >= forkcnt);
1926	array_verify (EV_A_ (W *)forks, forkcnt);	2094	array_verify (EV_A_ (W *)forks, forkcnt);
1927	#endif	2095	#endif
1928		2096
		2097	#if EV_CLEANUP_ENABLE
		2098	assert (cleanupmax >= cleanupcnt);
		2099	array_verify (EV_A_ (W *)cleanups, cleanupcnt);
		2100	#endif
		2101
1929	#if EV_ASYNC_ENABLE	2102	#if EV_ASYNC_ENABLE
1930	assert (asyncmax >= asynccnt);	2103	assert (asyncmax >= asynccnt);
1931	array_verify (EV_A_ (W *)asyncs, asynccnt);	2104	array_verify (EV_A_ (W *)asyncs, asynccnt);
1932	#endif	2105	#endif
1933		2106
…		…
1951	}	2124	}
1952	#endif	2125	#endif
1953		2126
1954	#if EV_MULTIPLICITY	2127	#if EV_MULTIPLICITY
1955	struct ev_loop *	2128	struct ev_loop *
1956	ev_default_loop_init (unsigned int flags)
1957	#else	2129	#else
1958	int	2130	int
		2131	#endif
1959	ev_default_loop (unsigned int flags)	2132	ev_default_loop (unsigned int flags)
1960	#endif
1961	{	2133	{
1962	if (!ev_default_loop_ptr)	2134	if (!ev_default_loop_ptr)
1963	{	2135	{
1964	#if EV_MULTIPLICITY	2136	#if EV_MULTIPLICITY
1965	EV_P = ev_default_loop_ptr = &default_loop_struct;	2137	EV_P = ev_default_loop_ptr = &default_loop_struct;
…		…
1984		2156
1985	return ev_default_loop_ptr;	2157	return ev_default_loop_ptr;
1986	}	2158	}
1987		2159
1988	void	2160	void
1989	ev_default_destroy (void)	2161	ev_loop_fork (EV_P)
1990	{	2162	{
1991	#if EV_MULTIPLICITY
1992	EV_P = ev_default_loop_ptr;
1993	#endif
1994
1995	ev_default_loop_ptr = 0;
1996
1997	#if EV_CHILD_ENABLE
1998	ev_ref (EV_A); /* child watcher */
1999	ev_signal_stop (EV_A_ &childev);
2000	#endif
2001
2002	loop_destroy (EV_A);
2003	}
2004
2005	void
2006	ev_default_fork (void)
2007	{
2008	#if EV_MULTIPLICITY
2009	EV_P = ev_default_loop_ptr;
2010	#endif
2011
2012	postfork = 1; /* must be in line with ev_loop_fork */	2163	postfork = 1; /* must be in line with ev_default_fork */
2013	}	2164	}
2014		2165
2015	/*****************************************************************************/	2166	/*****************************************************************************/
2016		2167
2017	void	2168	void
…		…
2039		2190
2040	for (pri = NUMPRI; pri--; )	2191	for (pri = NUMPRI; pri--; )
2041	while (pendingcnt [pri])	2192	while (pendingcnt [pri])
2042	{	2193	{
2043	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	2194	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
2044
2045	/assert (("libev: non-pending watcher on pending list", p->w->pending));/
2046	/* ^ this is no longer true, as pending_w could be here */
2047		2195
2048	p->w->pending = 0;	2196	p->w->pending = 0;
2049	EV_CB_INVOKE (p->w, p->events);	2197	EV_CB_INVOKE (p->w, p->events);
2050	EV_FREQUENT_CHECK;	2198	EV_FREQUENT_CHECK;
2051	}	2199	}
…		…
2113	feed_reverse_done (EV_A_ EV_TIMER);	2261	feed_reverse_done (EV_A_ EV_TIMER);
2114	}	2262	}
2115	}	2263	}
2116		2264
2117	#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
2118	/* make periodics pending */	2291	/* make periodics pending */
2119	inline_size void	2292	inline_size void
2120	periodics_reify (EV_P)	2293	periodics_reify (EV_P)
2121	{	2294	{
2122	EV_FREQUENT_CHECK;	2295	EV_FREQUENT_CHECK;
…		…
2141	ANHE_at_cache (periodics [HEAP0]);	2314	ANHE_at_cache (periodics [HEAP0]);
2142	downheap (periodics, periodiccnt, HEAP0);	2315	downheap (periodics, periodiccnt, HEAP0);
2143	}	2316	}
2144	else if (w->interval)	2317	else if (w->interval)
2145	{	2318	{
2146	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2319	periodic_recalc (EV_A_ w);
2147	/* if next trigger time is not sufficiently in the future, put it there */
2148	/* this might happen because of floating point inexactness */
2149	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2150	{
2151	ev_at (w) += w->interval;
2152
2153	/* if interval is unreasonably low we might still have a time in the past */
2154	/* so correct this. this will make the periodic very inexact, but the user */
2155	/* has effectively asked to get triggered more often than possible */
2156	if (ev_at (w) < ev_rt_now)
2157	ev_at (w) = ev_rt_now;
2158	}
2159
2160	ANHE_at_cache (periodics [HEAP0]);	2320	ANHE_at_cache (periodics [HEAP0]);
2161	downheap (periodics, periodiccnt, HEAP0);	2321	downheap (periodics, periodiccnt, HEAP0);
2162	}	2322	}
2163	else	2323	else
2164	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	2324	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
…		…
2171	feed_reverse_done (EV_A_ EV_PERIODIC);	2331	feed_reverse_done (EV_A_ EV_PERIODIC);
2172	}	2332	}
2173	}	2333	}
2174		2334
2175	/* simply recalculate all periodics */	2335	/* simply recalculate all periodics */
2176	/* TODO: maybe ensure that at leats one event happens when jumping forward? */	2336	/* TODO: maybe ensure that at least one event happens when jumping forward? */
2177	static void noinline	2337	static void noinline
2178	periodics_reschedule (EV_P)	2338	periodics_reschedule (EV_P)
2179	{	2339	{
2180	int i;	2340	int i;
2181		2341
…		…
2185	ev_periodic w = (ev_periodic )ANHE_w (periodics [i]);	2345	ev_periodic w = (ev_periodic )ANHE_w (periodics [i]);
2186		2346
2187	if (w->reschedule_cb)	2347	if (w->reschedule_cb)
2188	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2348	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2189	else if (w->interval)	2349	else if (w->interval)
2190	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2350	periodic_recalc (EV_A_ w);
2191		2351
2192	ANHE_at_cache (periodics [i]);	2352	ANHE_at_cache (periodics [i]);
2193	}	2353	}
2194		2354
2195	reheap (periodics, periodiccnt);	2355	reheap (periodics, periodiccnt);
…		…
2242	* 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
2243	* in the unlikely event of having been preempted here.	2403	* in the unlikely event of having been preempted here.
2244	*/	2404	*/
2245	for (i = 4; --i; )	2405	for (i = 4; --i; )
2246	{	2406	{
		2407	ev_tstamp diff;
2247	rtmn_diff = ev_rt_now - mn_now;	2408	rtmn_diff = ev_rt_now - mn_now;
2248		2409
		2410	diff = odiff - rtmn_diff;
		2411
2249	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))	2412	if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2250	return; /* all is well */	2413	return; /* all is well */
2251		2414
2252	ev_rt_now = ev_time ();	2415	ev_rt_now = ev_time ();
2253	mn_now = get_clock ();	2416	mn_now = get_clock ();
2254	now_floor = mn_now;	2417	now_floor = mn_now;
…		…
2277	mn_now = ev_rt_now;	2440	mn_now = ev_rt_now;
2278	}	2441	}
2279	}	2442	}
2280		2443
2281	void	2444	void
2282	ev_loop (EV_P_ int flags)	2445	ev_run (EV_P_ int flags)
2283	{	2446	{
2284	#if EV_FEATURE_API	2447	#if EV_FEATURE_API
2285	++loop_depth;	2448	++loop_depth;
2286	#endif	2449	#endif
2287		2450
2288	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));
2289		2452
2290	loop_done = EVUNLOOP_CANCEL;	2453	loop_done = EVBREAK_CANCEL;
2291		2454
2292	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 */
2293		2456
2294	do	2457	do
2295	{	2458	{
…		…
2338	/* calculate blocking time */	2501	/* calculate blocking time */
2339	{	2502	{
2340	ev_tstamp waittime = 0.;	2503	ev_tstamp waittime = 0.;
2341	ev_tstamp sleeptime = 0.;	2504	ev_tstamp sleeptime = 0.;
2342		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
2343	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))	2512	if (expect_true (!(flags & EVRUN_NOWAIT \|\| idleall \|\| !activecnt)))
2344	{	2513	{
2345	/* remember old timestamp for io_blocktime calculation */
2346	ev_tstamp prev_mn_now = mn_now;
2347
2348	/* update time to cancel out callback processing overhead */
2349	time_update (EV_A_ 1e100);
2350
2351	waittime = MAX_BLOCKTIME;	2514	waittime = MAX_BLOCKTIME;
2352		2515
2353	if (timercnt)	2516	if (timercnt)
2354	{	2517	{
2355	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;	2518	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
…		…
2385	}	2548	}
2386		2549
2387	#if EV_FEATURE_API	2550	#if EV_FEATURE_API
2388	++loop_count;	2551	++loop_count;
2389	#endif	2552	#endif
2390	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */	2553	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2391	backend_poll (EV_A_ waittime);	2554	backend_poll (EV_A_ waittime);
2392	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */	2555	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2393		2556
2394	/* update ev_rt_now, do magic */	2557	/* update ev_rt_now, do magic */
2395	time_update (EV_A_ waittime + sleeptime);	2558	time_update (EV_A_ waittime + sleeptime);
2396	}	2559	}
2397		2560
…		…
2415	EV_INVOKE_PENDING;	2578	EV_INVOKE_PENDING;
2416	}	2579	}
2417	while (expect_true (	2580	while (expect_true (
2418	activecnt	2581	activecnt
2419	&& !loop_done	2582	&& !loop_done
2420	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))	2583	&& !(flags & (EVRUN_ONCE \| EVRUN_NOWAIT))
2421	));	2584	));
2422		2585
2423	if (loop_done == EVUNLOOP_ONE)	2586	if (loop_done == EVBREAK_ONE)
2424	loop_done = EVUNLOOP_CANCEL;	2587	loop_done = EVBREAK_CANCEL;
2425		2588
2426	#if EV_FEATURE_API	2589	#if EV_FEATURE_API
2427	--loop_depth;	2590	--loop_depth;
2428	#endif	2591	#endif
2429	}	2592	}
2430		2593
2431	void	2594	void
2432	ev_unloop (EV_P_ int how)	2595	ev_break (EV_P_ int how)
2433	{	2596	{
2434	loop_done = how;	2597	loop_done = how;
2435	}	2598	}
2436		2599
2437	void	2600	void
…		…
2585	EV_FREQUENT_CHECK;	2748	EV_FREQUENT_CHECK;
2586		2749
2587	wlist_del (&anfds[w->fd].head, (WL)w);	2750	wlist_del (&anfds[w->fd].head, (WL)w);
2588	ev_stop (EV_A_ (W)w);	2751	ev_stop (EV_A_ (W)w);
2589		2752
2590	fd_change (EV_A_ w->fd, 1);	2753	fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2591		2754
2592	EV_FREQUENT_CHECK;	2755	EV_FREQUENT_CHECK;
2593	}	2756	}
2594		2757
2595	void noinline	2758	void noinline
…		…
2687	if (w->reschedule_cb)	2850	if (w->reschedule_cb)
2688	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2851	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2689	else if (w->interval)	2852	else if (w->interval)
2690	{	2853	{
2691	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.));
2692	/* this formula differs from the one in periodic_reify because we do not always round up */	2855	periodic_recalc (EV_A_ w);
2693	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2694	}	2856	}
2695	else	2857	else
2696	ev_at (w) = w->offset;	2858	ev_at (w) = w->offset;
2697		2859
2698	EV_FREQUENT_CHECK;	2860	EV_FREQUENT_CHECK;
…		…
2819	sa.sa_handler = ev_sighandler;	2981	sa.sa_handler = ev_sighandler;
2820	sigfillset (&sa.sa_mask);	2982	sigfillset (&sa.sa_mask);
2821	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 */
2822	sigaction (w->signum, &sa, 0);	2984	sigaction (w->signum, &sa, 0);
2823		2985
		2986	if (origflags & EVFLAG_NOSIGMASK)
		2987	{
2824	sigemptyset (&sa.sa_mask);	2988	sigemptyset (&sa.sa_mask);
2825	sigaddset (&sa.sa_mask, w->signum);	2989	sigaddset (&sa.sa_mask, w->signum);
2826	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);	2990	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
		2991	}
2827	#endif	2992	#endif
2828	}	2993	}
2829		2994
2830	EV_FREQUENT_CHECK;	2995	EV_FREQUENT_CHECK;
2831	}	2996	}
…		…
2972	if (!pend \|\| pend == path)	3137	if (!pend \|\| pend == path)
2973	break;	3138	break;
2974		3139
2975	*pend = 0;	3140	*pend = 0;
2976	w->wd = inotify_add_watch (fs_fd, path, mask);	3141	w->wd = inotify_add_watch (fs_fd, path, mask);
2977	}	3142	}
2978	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	3143	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
2979	}	3144	}
2980	}	3145	}
2981		3146
2982	if (w->wd >= 0)	3147	if (w->wd >= 0)
…		…
3047	{	3212	{
3048	struct inotify_event ev = (struct inotify_event )(buf + ofs);	3213	struct inotify_event ev = (struct inotify_event )(buf + ofs);
3049	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3214	infy_wd (EV_A_ ev->wd, ev->wd, ev);
3050	ofs += sizeof (struct inotify_event) + ev->len;	3215	ofs += sizeof (struct inotify_event) + ev->len;
3051	}	3216	}
3052	}
3053
3054	inline_size unsigned int
3055	ev_linux_version (void)
3056	{
3057	struct utsname buf;
3058	unsigned int v;
3059	int i;
3060	char *p = buf.release;
3061
3062	if (uname (&buf))
3063	return 0;
3064
3065	for (i = 3+1; --i; )
3066	{
3067	unsigned int c = 0;
3068
3069	for (;;)
3070	{
3071	if (p >= '0' && p <= '9')
3072	c = c * 10 + *p++ - '0';
3073	else
3074	{
3075	p += *p == '.';
3076	break;
3077	}
3078	}
3079
3080	v = (v << 8) \| c;
3081	}
3082
3083	return v;
3084	}	3217	}
3085		3218
3086	inline_size void	3219	inline_size void
3087	ev_check_2625 (EV_P)	3220	ev_check_2625 (EV_P)
3088	{	3221	{
…		…
3412		3545
3413	#if EV_EMBED_ENABLE	3546	#if EV_EMBED_ENABLE
3414	void noinline	3547	void noinline
3415	ev_embed_sweep (EV_P_ ev_embed *w)	3548	ev_embed_sweep (EV_P_ ev_embed *w)
3416	{	3549	{
3417	ev_loop (w->other, EVLOOP_NONBLOCK);	3550	ev_run (w->other, EVRUN_NOWAIT);
3418	}	3551	}
3419		3552
3420	static void	3553	static void
3421	embed_io_cb (EV_P_ ev_io *io, int revents)	3554	embed_io_cb (EV_P_ ev_io *io, int revents)
3422	{	3555	{
3423	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	3556	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
3424		3557
3425	if (ev_cb (w))	3558	if (ev_cb (w))
3426	ev_feed_event (EV_A_ (W)w, EV_EMBED);	3559	ev_feed_event (EV_A_ (W)w, EV_EMBED);
3427	else	3560	else
3428	ev_loop (w->other, EVLOOP_NONBLOCK);	3561	ev_run (w->other, EVRUN_NOWAIT);
3429	}	3562	}
3430		3563
3431	static void	3564	static void
3432	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3565	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3433	{	3566	{
…		…
3437	EV_P = w->other;	3570	EV_P = w->other;
3438		3571
3439	while (fdchangecnt)	3572	while (fdchangecnt)
3440	{	3573	{
3441	fd_reify (EV_A);	3574	fd_reify (EV_A);
3442	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3575	ev_run (EV_A_ EVRUN_NOWAIT);
3443	}	3576	}
3444	}	3577	}
3445	}	3578	}
3446		3579
3447	static void	3580	static void
…		…
3453		3586
3454	{	3587	{
3455	EV_P = w->other;	3588	EV_P = w->other;
3456		3589
3457	ev_loop_fork (EV_A);	3590	ev_loop_fork (EV_A);
3458	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3591	ev_run (EV_A_ EVRUN_NOWAIT);
3459	}	3592	}
3460		3593
3461	ev_embed_start (EV_A_ w);	3594	ev_embed_start (EV_A_ w);
3462	}	3595	}
3463		3596
…		…
3555		3688
3556	EV_FREQUENT_CHECK;	3689	EV_FREQUENT_CHECK;
3557	}	3690	}
3558	#endif	3691	#endif
3559		3692
3560	#if EV_ASYNC_ENABLE	3693	#if EV_CLEANUP_ENABLE
3561	void	3694	void
3562	ev_async_start (EV_P_ ev_async *w)	3695	ev_cleanup_start (EV_P_ ev_cleanup *w)
3563	{	3696	{
3564	if (expect_false (ev_is_active (w)))	3697	if (expect_false (ev_is_active (w)))
3565	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;
3566		3742
3567	evpipe_init (EV_A);	3743	evpipe_init (EV_A);
3568		3744
3569	EV_FREQUENT_CHECK;	3745	EV_FREQUENT_CHECK;
3570		3746
…		…
3790		3966
3791	#if EV_MULTIPLICITY	3967	#if EV_MULTIPLICITY
3792	#include "ev_wrap.h"	3968	#include "ev_wrap.h"
3793	#endif	3969	#endif
3794		3970
3795	#ifdef __cplusplus	3971	EV_CPP(})
3796	}
3797	#endif
3798		3972

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing libev/ev.c (file contents): Revision 1.343 by root, Fri Apr 2 21:03:46 2010 UTC vs. Revision 1.374 by root, Sat Feb 26 15:21:01 2011 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.343 by root, Fri Apr 2 21:03:46 2010 UTC vs.
Revision 1.374 by root, Sat Feb 26 15:21:01 2011 UTC