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

Comparing libev/ev.c (file contents):
Revision 1.339 by root, Tue Mar 16 00:43:22 2010 UTC vs.
Revision 1.371 by root, Mon Feb 7 21:45:32 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	*
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
…		…
77	# ifndef EV_USE_REALTIME	73	# ifndef EV_USE_REALTIME
78	# define EV_USE_REALTIME 0	74	# define EV_USE_REALTIME 0
79	# endif	75	# endif
80	# endif	76	# endif
81		77
		78	# if HAVE_NANOSLEEP
82	# ifndef EV_USE_NANOSLEEP	79	# ifndef EV_USE_NANOSLEEP
83	# if HAVE_NANOSLEEP
84	# define EV_USE_NANOSLEEP EV_FEATURE_OS	80	# define EV_USE_NANOSLEEP EV_FEATURE_OS
		81	# endif
85	# else	82	# else
		83	# undef EV_USE_NANOSLEEP
86	# define EV_USE_NANOSLEEP 0	84	# define EV_USE_NANOSLEEP 0
		85	# endif
		86
		87	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		88	# ifndef EV_USE_SELECT
		89	# define EV_USE_SELECT EV_FEATURE_BACKENDS
87	# endif	90	# endif
		91	# else
		92	# undef EV_USE_SELECT
		93	# define EV_USE_SELECT 0
88	# endif	94	# endif
89		95
		96	# if HAVE_POLL && HAVE_POLL_H
90	# ifndef EV_USE_SELECT	97	# ifndef EV_USE_POLL
91	# if HAVE_SELECT && HAVE_SYS_SELECT_H
92	# define EV_USE_SELECT EV_FEATURE_BACKENDS	98	# define EV_USE_POLL EV_FEATURE_BACKENDS
93	# else
94	# define EV_USE_SELECT 0
95	# endif	99	# endif
96	# endif
97
98	# ifndef EV_USE_POLL
99	# if HAVE_POLL && HAVE_POLL_H
100	# define EV_USE_POLL EV_FEATURE_BACKENDS
101	# else	100	# else
		101	# undef EV_USE_POLL
102	# define EV_USE_POLL 0	102	# define EV_USE_POLL 0
103	# endif
104	# endif	103	# endif
105		104
106	# ifndef EV_USE_EPOLL
107	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	105	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		106	# ifndef EV_USE_EPOLL
108	# define EV_USE_EPOLL EV_FEATURE_BACKENDS	107	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
109	# else
110	# define EV_USE_EPOLL 0
111	# endif	108	# endif
		109	# else
		110	# undef EV_USE_EPOLL
		111	# define EV_USE_EPOLL 0
112	# endif	112	# endif
113		113
114	# ifndef EV_USE_KQUEUE
115	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H	114	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
		115	# ifndef EV_USE_KQUEUE
116	# define EV_USE_KQUEUE EV_FEATURE_BACKENDS	116	# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
117	# else
118	# define EV_USE_KQUEUE 0
119	# endif	117	# endif
		118	# else
		119	# undef EV_USE_KQUEUE
		120	# define EV_USE_KQUEUE 0
120	# endif	121	# endif
121		122
122	# ifndef EV_USE_PORT
123	# if HAVE_PORT_H && HAVE_PORT_CREATE	123	# if HAVE_PORT_H && HAVE_PORT_CREATE
		124	# ifndef EV_USE_PORT
124	# define EV_USE_PORT EV_FEATURE_BACKENDS	125	# define EV_USE_PORT EV_FEATURE_BACKENDS
125	# else
126	# define EV_USE_PORT 0
127	# endif	126	# endif
		127	# else
		128	# undef EV_USE_PORT
		129	# define EV_USE_PORT 0
128	# endif	130	# endif
129		131
130	# ifndef EV_USE_INOTIFY
131	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H	132	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		133	# ifndef EV_USE_INOTIFY
132	# define EV_USE_INOTIFY EV_FEATURE_OS	134	# define EV_USE_INOTIFY EV_FEATURE_OS
133	# else
134	# define EV_USE_INOTIFY 0
135	# endif	135	# endif
		136	# else
		137	# undef EV_USE_INOTIFY
		138	# define EV_USE_INOTIFY 0
136	# endif	139	# endif
137		140
138	# ifndef EV_USE_SIGNALFD
139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H	141	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		142	# ifndef EV_USE_SIGNALFD
140	# define EV_USE_SIGNALFD EV_FEATURE_OS	143	# define EV_USE_SIGNALFD EV_FEATURE_OS
141	# else
142	# define EV_USE_SIGNALFD 0
143	# endif	144	# endif
		145	# else
		146	# undef EV_USE_SIGNALFD
		147	# define EV_USE_SIGNALFD 0
144	# endif	148	# endif
145		149
		150	# if HAVE_EVENTFD
146	# ifndef EV_USE_EVENTFD	151	# ifndef EV_USE_EVENTFD
147	# if HAVE_EVENTFD
148	# define EV_USE_EVENTFD EV_FEATURE_OS	152	# define EV_USE_EVENTFD EV_FEATURE_OS
149	# else
150	# define EV_USE_EVENTFD 0
151	# endif	153	# endif
		154	# else
		155	# undef EV_USE_EVENTFD
		156	# define EV_USE_EVENTFD 0
152	# endif	157	# endif
153		158
154	#endif	159	#endif
155		160
156	#include <math.h>	161	#include <math.h>
…		…
172	#ifdef EV_H	177	#ifdef EV_H
173	# include EV_H	178	# include EV_H
174	#else	179	#else
175	# include "ev.h"	180	# include "ev.h"
176	#endif	181	#endif
		182
		183	EV_CPP(extern "C" {)
177		184
178	#ifndef _WIN32	185	#ifndef _WIN32
179	# include <sys/time.h>	186	# include <sys/time.h>
180	# include <sys/wait.h>	187	# include <sys/wait.h>
181	# include <unistd.h>	188	# include <unistd.h>
…		…
186	# ifndef EV_SELECT_IS_WINSOCKET	193	# ifndef EV_SELECT_IS_WINSOCKET
187	# define EV_SELECT_IS_WINSOCKET 1	194	# define EV_SELECT_IS_WINSOCKET 1
188	# endif	195	# endif
189	# undef EV_AVOID_STDIO	196	# undef EV_AVOID_STDIO
190	#endif	197	#endif
		198
		199	/* OS X, in its infinite idiocy, actually HARDCODES
		200	* a limit of 1024 into their select. Where people have brains,
		201	* OS X engineers apparently have a vacuum. Or maybe they were
		202	* ordered to have a vacuum, or they do anything for money.
		203	* This might help. Or not.
		204	*/
		205	#define _DARWIN_UNLIMITED_SELECT 1
191		206
192	/* this block tries to deduce configuration from header-defined symbols and defaults */	207	/* this block tries to deduce configuration from header-defined symbols and defaults */
193		208
194	/* try to deduce the maximum number of signals on this platform */	209	/* try to deduce the maximum number of signals on this platform */
195	#if defined (EV_NSIG)	210	#if defined (EV_NSIG)
…		…
361	# undef EV_USE_INOTIFY	376	# undef EV_USE_INOTIFY
362	# define EV_USE_INOTIFY 0	377	# define EV_USE_INOTIFY 0
363	#endif	378	#endif
364		379
365	#if !EV_USE_NANOSLEEP	380	#if !EV_USE_NANOSLEEP
366	# ifndef _WIN32	381	/* hp-ux has it in sys/time.h, which we unconditionally include above */
		382	# if !defined(_WIN32) && !defined(__hpux)
367	# include <sys/select.h>	383	# include <sys/select.h>
368	# endif	384	# endif
369	#endif	385	#endif
370		386
371	#if EV_USE_INOTIFY	387	#if EV_USE_INOTIFY
372	# include <sys/utsname.h>
373	# include <sys/statfs.h>	388	# include <sys/statfs.h>
374	# include <sys/inotify.h>	389	# include <sys/inotify.h>
375	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */	390	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
376	# ifndef IN_DONT_FOLLOW	391	# ifndef IN_DONT_FOLLOW
377	# undef EV_USE_INOTIFY	392	# undef EV_USE_INOTIFY
…		…
394	# define EFD_CLOEXEC O_CLOEXEC	409	# define EFD_CLOEXEC O_CLOEXEC
395	# else	410	# else
396	# define EFD_CLOEXEC 02000000	411	# define EFD_CLOEXEC 02000000
397	# endif	412	# endif
398	# endif	413	# endif
399	# ifdef __cplusplus
400	extern "C" {
401	# endif
402	int (eventfd) (unsigned int initval, int flags);	414	EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
403	# ifdef __cplusplus
404	}
405	# endif
406	#endif	415	#endif
407		416
408	#if EV_USE_SIGNALFD	417	#if EV_USE_SIGNALFD
409	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	418	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
410	# include <stdint.h>	419	# include <stdint.h>
…		…
416	# define SFD_CLOEXEC O_CLOEXEC	425	# define SFD_CLOEXEC O_CLOEXEC
417	# else	426	# else
418	# define SFD_CLOEXEC 02000000	427	# define SFD_CLOEXEC 02000000
419	# endif	428	# endif
420	# endif	429	# endif
421	# ifdef __cplusplus
422	extern "C" {
423	# endif
424	int signalfd (int fd, const sigset_t *mask, int flags);	430	EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
425		431
426	struct signalfd_siginfo	432	struct signalfd_siginfo
427	{	433	{
428	uint32_t ssi_signo;	434	uint32_t ssi_signo;
429	char pad[128 - sizeof (uint32_t)];	435	char pad[128 - sizeof (uint32_t)];
430	};	436	};
431	# ifdef __cplusplus
432	}
433	# endif	437	#endif
434	#endif
435
436		438
437	/**/	439	/**/
438		440
439	#if EV_VERIFY >= 3	441	#if EV_VERIFY >= 3
440	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	442	# define EV_FREQUENT_CHECK ev_verify (EV_A)
441	#else	443	#else
442	# define EV_FREQUENT_CHECK do { } while (0)	444	# define EV_FREQUENT_CHECK do { } while (0)
443	#endif	445	#endif
444		446
445	/*	447	/*
…		…
453	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	455	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
454		456
455	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	457	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
456	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	458	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
457		459
		460	#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
		461	#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
		462
458	#if __GNUC__ >= 4	463	#if __GNUC__ >= 4
459	# define expect(expr,value) __builtin_expect ((expr),(value))	464	# define expect(expr,value) __builtin_expect ((expr),(value))
460	# define noinline __attribute__ ((noinline))	465	# define noinline __attribute__ ((noinline))
461	#else	466	#else
462	# define expect(expr,value) (expr)	467	# define expect(expr,value) (expr)
…		…
494	#define ev_active(w) ((W)(w))->active	499	#define ev_active(w) ((W)(w))->active
495	#define ev_at(w) ((WT)(w))->at	500	#define ev_at(w) ((WT)(w))->at
496		501
497	#if EV_USE_REALTIME	502	#if EV_USE_REALTIME
498	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	503	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
499	/* giving it a reasonably high chance of working on typical architetcures */	504	/* giving it a reasonably high chance of working on typical architectures */
500	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */	505	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
501	#endif	506	#endif
502		507
503	#if EV_USE_MONOTONIC	508	#if EV_USE_MONOTONIC
504	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	509	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
…		…
515	#endif	520	#endif
516		521
517	#ifdef _WIN32	522	#ifdef _WIN32
518	# include "ev_win32.c"	523	# include "ev_win32.c"
519	#endif	524	#endif
		525
		526	/*****************************************************************************/
		527
		528	#ifdef __linux
		529	# include <sys/utsname.h>
		530	#endif
		531
		532	static unsigned int noinline
		533	ev_linux_version (void)
		534	{
		535	#ifdef __linux
		536	unsigned int v = 0;
		537	struct utsname buf;
		538	int i;
		539	char *p = buf.release;
		540
		541	if (uname (&buf))
		542	return 0;
		543
		544	for (i = 3+1; --i; )
		545	{
		546	unsigned int c = 0;
		547
		548	for (;;)
		549	{
		550	if (p >= '0' && p <= '9')
		551	c = c * 10 + *p++ - '0';
		552	else
		553	{
		554	p += *p == '.';
		555	break;
		556	}
		557	}
		558
		559	v = (v << 8) \| c;
		560	}
		561
		562	return v;
		563	#else
		564	return 0;
		565	#endif
		566	}
520		567
521	/*****************************************************************************/	568	/*****************************************************************************/
522		569
523	#if EV_AVOID_STDIO	570	#if EV_AVOID_STDIO
524	static void noinline	571	static void noinline
…		…
545	if (syserr_cb)	592	if (syserr_cb)
546	syserr_cb (msg);	593	syserr_cb (msg);
547	else	594	else
548	{	595	{
549	#if EV_AVOID_STDIO	596	#if EV_AVOID_STDIO
550	const char *err = strerror (errno);
551
552	ev_printerr (msg);	597	ev_printerr (msg);
553	ev_printerr (": ");	598	ev_printerr (": ");
554	ev_printerr (err);	599	ev_printerr (strerror (errno));
555	ev_printerr ("\n");	600	ev_printerr ("\n");
556	#else	601	#else
557	perror (msg);	602	perror (msg);
558	#endif	603	#endif
559	abort ();	604	abort ();
…		…
593	ptr = alloc (ptr, size);	638	ptr = alloc (ptr, size);
594		639
595	if (!ptr && size)	640	if (!ptr && size)
596	{	641	{
597	#if EV_AVOID_STDIO	642	#if EV_AVOID_STDIO
598	ev_printerr ("libev: memory allocation failed, aborting.\n");	643	ev_printerr ("(libev) memory allocation failed, aborting.\n");
599	#else	644	#else
600	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	645	fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
601	#endif	646	#endif
602	abort ();	647	abort ();
603	}	648	}
604		649
605	return ptr;	650	return ptr;
…		…
622	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */	667	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
623	unsigned char unused;	668	unsigned char unused;
624	#if EV_USE_EPOLL	669	#if EV_USE_EPOLL
625	unsigned int egen; /* generation counter to counter epoll bugs */	670	unsigned int egen; /* generation counter to counter epoll bugs */
626	#endif	671	#endif
627	#if EV_SELECT_IS_WINSOCKET	672	#if EV_SELECT_IS_WINSOCKET \|\| EV_USE_IOCP
628	SOCKET handle;	673	SOCKET handle;
		674	#endif
		675	#if EV_USE_IOCP
		676	OVERLAPPED or, ow;
629	#endif	677	#endif
630	} ANFD;	678	} ANFD;
631		679
632	/* stores the pending event set for a given watcher */	680	/* stores the pending event set for a given watcher */
633	typedef struct	681	typedef struct
…		…
698	# define EV_RELEASE_CB (void)0	746	# define EV_RELEASE_CB (void)0
699	# define EV_ACQUIRE_CB (void)0	747	# define EV_ACQUIRE_CB (void)0
700	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)	748	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
701	#endif	749	#endif
702		750
703	#define EVUNLOOP_RECURSE 0x80	751	#define EVBREAK_RECURSE 0x80
704		752
705	/*****************************************************************************/	753	/*****************************************************************************/
706		754
707	#ifndef EV_HAVE_EV_TIME	755	#ifndef EV_HAVE_EV_TIME
708	ev_tstamp	756	ev_tstamp
…		…
752	if (delay > 0.)	800	if (delay > 0.)
753	{	801	{
754	#if EV_USE_NANOSLEEP	802	#if EV_USE_NANOSLEEP
755	struct timespec ts;	803	struct timespec ts;
756		804
757	ts.tv_sec = (time_t)delay;	805	EV_TS_SET (ts, delay);
758	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
759
760	nanosleep (&ts, 0);	806	nanosleep (&ts, 0);
761	#elif defined(_WIN32)	807	#elif defined(_WIN32)
762	Sleep ((unsigned long)(delay * 1e3));	808	Sleep ((unsigned long)(delay * 1e3));
763	#else	809	#else
764	struct timeval tv;	810	struct timeval tv;
765		811
766	tv.tv_sec = (time_t)delay;
767	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
768
769	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	812	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
770	/* something not guaranteed by newer posix versions, but guaranteed */	813	/* something not guaranteed by newer posix versions, but guaranteed */
771	/* by older ones */	814	/* by older ones */
		815	EV_TV_SET (tv, delay);
772	select (0, 0, 0, 0, &tv);	816	select (0, 0, 0, 0, &tv);
773	#endif	817	#endif
774	}	818	}
775	}	819	}
776		820
		821	inline_speed int
		822	ev_timeout_to_ms (ev_tstamp timeout)
		823	{
		824	int ms = timeout * 1000. + .999999;
		825
		826	return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
		827	}
		828
777	/*****************************************************************************/	829	/*****************************************************************************/
778		830
779	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2*n and >> 4 longs /	831	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2*n and >> 4 longs /
780		832
781	/* find a suitable new size for the given array, */	833	/* find a suitable new size for the given array, */
782	/* hopefully by rounding to a ncie-to-malloc size */	834	/* hopefully by rounding to a nice-to-malloc size */
783	inline_size int	835	inline_size int
784	array_nextsize (int elem, int cur, int cnt)	836	array_nextsize (int elem, int cur, int cnt)
785	{	837	{
786	int ncur = cur + 1;	838	int ncur = cur + 1;
787		839
…		…
922	inline_size void	974	inline_size void
923	fd_reify (EV_P)	975	fd_reify (EV_P)
924	{	976	{
925	int i;	977	int i;
926		978
		979	#if EV_SELECT_IS_WINSOCKET \|\| EV_USE_IOCP
		980	for (i = 0; i < fdchangecnt; ++i)
		981	{
		982	int fd = fdchanges [i];
		983	ANFD *anfd = anfds + fd;
		984
		985	if (anfd->reify & EV__IOFDSET)
		986	{
		987	SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
		988
		989	if (handle != anfd->handle)
		990	{
		991	unsigned long arg;
		992
		993	assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
		994
		995	/* handle changed, but fd didn't - we need to do it in two steps */
		996	backend_modify (EV_A_ fd, anfd->events, 0);
		997	anfd->events = 0;
		998	anfd->handle = handle;
		999	}
		1000	}
		1001	}
		1002	#endif
		1003
927	for (i = 0; i < fdchangecnt; ++i)	1004	for (i = 0; i < fdchangecnt; ++i)
928	{	1005	{
929	int fd = fdchanges [i];	1006	int fd = fdchanges [i];
930	ANFD *anfd = anfds + fd;	1007	ANFD *anfd = anfds + fd;
931	ev_io *w;	1008	ev_io *w;
932		1009
933	unsigned char events = 0;	1010	unsigned char o_events = anfd->events;
		1011	unsigned char o_reify = anfd->reify;
934		1012
935	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	1013	anfd->reify = 0;
936	events \|= (unsigned char)w->events;
937		1014
938	#if EV_SELECT_IS_WINSOCKET	1015	/if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation /
939	if (events)
940	{	1016	{
941	unsigned long arg;	1017	anfd->events = 0;
942	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	1018
943	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	1019	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
		1020	anfd->events \|= (unsigned char)w->events;
		1021
		1022	if (o_events != anfd->events)
		1023	o_reify = EV__IOFDSET; /* actually \|= */
944	}	1024	}
945	#endif
946		1025
947	{	1026	if (o_reify & EV__IOFDSET)
948	unsigned char o_events = anfd->events;
949	unsigned char o_reify = anfd->reify;
950
951	anfd->reify = 0;
952	anfd->events = events;
953
954	if (o_events != events \|\| o_reify & EV__IOFDSET)
955	backend_modify (EV_A_ fd, o_events, events);	1027	backend_modify (EV_A_ fd, o_events, anfd->events);
956	}
957	}	1028	}
958		1029
959	fdchangecnt = 0;	1030	fdchangecnt = 0;
960	}	1031	}
961		1032
…		…
1054	}	1125	}
1055		1126
1056	/*****************************************************************************/	1127	/*****************************************************************************/
1057		1128
1058	/*	1129	/*
1059	* the heap functions want a real array index. array index 0 uis guaranteed to not	1130	* the heap functions want a real array index. array index 0 is guaranteed to not
1060	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives	1131	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1061	* the branching factor of the d-tree.	1132	* the branching factor of the d-tree.
1062	*/	1133	*/
1063		1134
1064	/*	1135	/*
…		…
1264	uint64_t counter = 1;	1335	uint64_t counter = 1;
1265	write (evfd, &counter, sizeof (uint64_t));	1336	write (evfd, &counter, sizeof (uint64_t));
1266	}	1337	}
1267	else	1338	else
1268	#endif	1339	#endif
		1340	/* win32 people keep sending patches that change this write() to send() */
		1341	/* and then run away. but send() is wrong, it wants a socket handle on win32 */
		1342	/* so when you think this write should be a send instead, please find out */
		1343	/* where your send() is from - it's definitely not the microsoft send, and */
		1344	/* tell me. thank you. */
1269	write (evpipe [1], &dummy, 1);	1345	write (evpipe [1], &dummy, 1);
1270		1346
1271	errno = old_errno;	1347	errno = old_errno;
1272	}	1348	}
1273	}	1349	}
…		…
1287	}	1363	}
1288	else	1364	else
1289	#endif	1365	#endif
1290	{	1366	{
1291	char dummy;	1367	char dummy;
		1368	/* see discussion in evpipe_write when you think this read should be recv in win32 */
1292	read (evpipe [0], &dummy, 1);	1369	read (evpipe [0], &dummy, 1);
1293	}	1370	}
1294		1371
		1372	#if EV_SIGNAL_ENABLE
1295	if (sig_pending)	1373	if (sig_pending)
1296	{	1374	{
1297	sig_pending = 0;	1375	sig_pending = 0;
1298		1376
1299	for (i = EV_NSIG - 1; i--; )	1377	for (i = EV_NSIG - 1; i--; )
1300	if (expect_false (signals [i].pending))	1378	if (expect_false (signals [i].pending))
1301	ev_feed_signal_event (EV_A_ i + 1);	1379	ev_feed_signal_event (EV_A_ i + 1);
1302	}	1380	}
		1381	#endif
1303		1382
1304	#if EV_ASYNC_ENABLE	1383	#if EV_ASYNC_ENABLE
1305	if (async_pending)	1384	if (async_pending)
1306	{	1385	{
1307	async_pending = 0;	1386	async_pending = 0;
…		…
1316	#endif	1395	#endif
1317	}	1396	}
1318		1397
1319	/*****************************************************************************/	1398	/*****************************************************************************/
1320		1399
		1400	void
		1401	ev_feed_signal (int signum)
		1402	{
		1403	#if EV_MULTIPLICITY
		1404	EV_P = signals [signum - 1].loop;
		1405
		1406	if (!EV_A)
		1407	return;
		1408	#endif
		1409
		1410	signals [signum - 1].pending = 1;
		1411	evpipe_write (EV_A_ &sig_pending);
		1412	}
		1413
1321	static void	1414	static void
1322	ev_sighandler (int signum)	1415	ev_sighandler (int signum)
1323	{	1416	{
1324	#if EV_MULTIPLICITY
1325	EV_P = signals [signum - 1].loop;
1326	#endif
1327
1328	#ifdef _WIN32	1417	#ifdef _WIN32
1329	signal (signum, ev_sighandler);	1418	signal (signum, ev_sighandler);
1330	#endif	1419	#endif
1331		1420
1332	signals [signum - 1].pending = 1;	1421	ev_feed_signal (signum);
1333	evpipe_write (EV_A_ &sig_pending);
1334	}	1422	}
1335		1423
1336	void noinline	1424	void noinline
1337	ev_feed_signal_event (EV_P_ int signum)	1425	ev_feed_signal_event (EV_P_ int signum)
1338	{	1426	{
…		…
1438		1526
1439	#endif	1527	#endif
1440		1528
1441	/*****************************************************************************/	1529	/*****************************************************************************/
1442		1530
		1531	#if EV_USE_IOCP
		1532	# include "ev_iocp.c"
		1533	#endif
1443	#if EV_USE_PORT	1534	#if EV_USE_PORT
1444	# include "ev_port.c"	1535	# include "ev_port.c"
1445	#endif	1536	#endif
1446	#if EV_USE_KQUEUE	1537	#if EV_USE_KQUEUE
1447	# include "ev_kqueue.c"	1538	# include "ev_kqueue.c"
…		…
1507	#ifdef __APPLE__	1598	#ifdef __APPLE__
1508	/* only select works correctly on that "unix-certified" platform */	1599	/* only select works correctly on that "unix-certified" platform */
1509	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */	1600	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1510	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */	1601	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1511	#endif	1602	#endif
		1603	#ifdef __FreeBSD__
		1604	flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
		1605	#endif
1512		1606
1513	return flags;	1607	return flags;
1514	}	1608	}
1515		1609
1516	unsigned int	1610	unsigned int
1517	ev_embeddable_backends (void)	1611	ev_embeddable_backends (void)
1518	{	1612	{
1519	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;	1613	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
1520		1614
1521	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */	1615	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1522	/* please fix it and tell me how to detect the fix */	1616	if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1523	flags &= ~EVBACKEND_EPOLL;	1617	flags &= ~EVBACKEND_EPOLL;
1524		1618
1525	return flags;	1619	return flags;
1526	}	1620	}
1527		1621
1528	unsigned int	1622	unsigned int
…		…
1531	return backend;	1625	return backend;
1532	}	1626	}
1533		1627
1534	#if EV_FEATURE_API	1628	#if EV_FEATURE_API
1535	unsigned int	1629	unsigned int
1536	ev_loop_count (EV_P)	1630	ev_iteration (EV_P)
1537	{	1631	{
1538	return loop_count;	1632	return loop_count;
1539	}	1633	}
1540		1634
1541	unsigned int	1635	unsigned int
1542	ev_loop_depth (EV_P)	1636	ev_depth (EV_P)
1543	{	1637	{
1544	return loop_depth;	1638	return loop_depth;
1545	}	1639	}
1546		1640
1547	void	1641	void
…		…
1584	static void noinline	1678	static void noinline
1585	loop_init (EV_P_ unsigned int flags)	1679	loop_init (EV_P_ unsigned int flags)
1586	{	1680	{
1587	if (!backend)	1681	if (!backend)
1588	{	1682	{
		1683	origflags = flags;
		1684
1589	#if EV_USE_REALTIME	1685	#if EV_USE_REALTIME
1590	if (!have_realtime)	1686	if (!have_realtime)
1591	{	1687	{
1592	struct timespec ts;	1688	struct timespec ts;
1593		1689
…		…
1638	#endif	1734	#endif
1639	#if EV_USE_SIGNALFD	1735	#if EV_USE_SIGNALFD
1640	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;	1736	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1641	#endif	1737	#endif
1642		1738
1643	if (!(flags & 0x0000ffffU))	1739	if (!(flags & EVBACKEND_MASK))
1644	flags \|= ev_recommended_backends ();	1740	flags \|= ev_recommended_backends ();
1645		1741
		1742	#if EV_USE_IOCP
		1743	if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
		1744	#endif
1646	#if EV_USE_PORT	1745	#if EV_USE_PORT
1647	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1746	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1648	#endif	1747	#endif
1649	#if EV_USE_KQUEUE	1748	#if EV_USE_KQUEUE
1650	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1749	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
1667	#endif	1766	#endif
1668	}	1767	}
1669	}	1768	}
1670		1769
1671	/* free up a loop structure */	1770	/* free up a loop structure */
1672	static void noinline	1771	void
1673	loop_destroy (EV_P)	1772	ev_loop_destroy (EV_P)
1674	{	1773	{
1675	int i;	1774	int i;
		1775
		1776	#if EV_MULTIPLICITY
		1777	/* mimic free (0) */
		1778	if (!EV_A)
		1779	return;
		1780	#endif
		1781
		1782	#if EV_CLEANUP_ENABLE
		1783	/* queue cleanup watchers (and execute them) */
		1784	if (expect_false (cleanupcnt))
		1785	{
		1786	queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
		1787	EV_INVOKE_PENDING;
		1788	}
		1789	#endif
		1790
		1791	#if EV_CHILD_ENABLE
		1792	if (ev_is_active (&childev))
		1793	{
		1794	ev_ref (EV_A); /* child watcher */
		1795	ev_signal_stop (EV_A_ &childev);
		1796	}
		1797	#endif
1676		1798
1677	if (ev_is_active (&pipe_w))	1799	if (ev_is_active (&pipe_w))
1678	{	1800	{
1679	/ev_ref (EV_A);/	1801	/ev_ref (EV_A);/
1680	/ev_io_stop (EV_A_ &pipe_w);/	1802	/ev_io_stop (EV_A_ &pipe_w);/
…		…
1702	#endif	1824	#endif
1703		1825
1704	if (backend_fd >= 0)	1826	if (backend_fd >= 0)
1705	close (backend_fd);	1827	close (backend_fd);
1706		1828
		1829	#if EV_USE_IOCP
		1830	if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
		1831	#endif
1707	#if EV_USE_PORT	1832	#if EV_USE_PORT
1708	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1833	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1709	#endif	1834	#endif
1710	#if EV_USE_KQUEUE	1835	#if EV_USE_KQUEUE
1711	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);	1836	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
…		…
1738	array_free (periodic, EMPTY);	1863	array_free (periodic, EMPTY);
1739	#endif	1864	#endif
1740	#if EV_FORK_ENABLE	1865	#if EV_FORK_ENABLE
1741	array_free (fork, EMPTY);	1866	array_free (fork, EMPTY);
1742	#endif	1867	#endif
		1868	#if EV_CLEANUP_ENABLE
		1869	array_free (cleanup, EMPTY);
		1870	#endif
1743	array_free (prepare, EMPTY);	1871	array_free (prepare, EMPTY);
1744	array_free (check, EMPTY);	1872	array_free (check, EMPTY);
1745	#if EV_ASYNC_ENABLE	1873	#if EV_ASYNC_ENABLE
1746	array_free (async, EMPTY);	1874	array_free (async, EMPTY);
1747	#endif	1875	#endif
1748		1876
1749	backend = 0;	1877	backend = 0;
		1878
		1879	#if EV_MULTIPLICITY
		1880	if (ev_is_default_loop (EV_A))
		1881	#endif
		1882	ev_default_loop_ptr = 0;
		1883	#if EV_MULTIPLICITY
		1884	else
		1885	ev_free (EV_A);
		1886	#endif
1750	}	1887	}
1751		1888
1752	#if EV_USE_INOTIFY	1889	#if EV_USE_INOTIFY
1753	inline_size void infy_fork (EV_P);	1890	inline_size void infy_fork (EV_P);
1754	#endif	1891	#endif
…		…
1813	loop_init (EV_A_ flags);	1950	loop_init (EV_A_ flags);
1814		1951
1815	if (ev_backend (EV_A))	1952	if (ev_backend (EV_A))
1816	return EV_A;	1953	return EV_A;
1817		1954
		1955	ev_free (EV_A);
1818	return 0;	1956	return 0;
1819	}	1957	}
1820		1958
1821	void
1822	ev_loop_destroy (EV_P)
1823	{
1824	loop_destroy (EV_A);
1825	ev_free (loop);
1826	}
1827
1828	void
1829	ev_loop_fork (EV_P)
1830	{
1831	postfork = 1; /* must be in line with ev_default_fork */
1832	}
1833	#endif /* multiplicity */	1959	#endif /* multiplicity */
1834		1960
1835	#if EV_VERIFY	1961	#if EV_VERIFY
1836	static void noinline	1962	static void noinline
1837	verify_watcher (EV_P_ W w)	1963	verify_watcher (EV_P_ W w)
…		…
1868	}	1994	}
1869	#endif	1995	#endif
1870		1996
1871	#if EV_FEATURE_API	1997	#if EV_FEATURE_API
1872	void	1998	void
1873	ev_loop_verify (EV_P)	1999	ev_verify (EV_P)
1874	{	2000	{
1875	#if EV_VERIFY	2001	#if EV_VERIFY
1876	int i;	2002	int i;
1877	WL w;	2003	WL w;
1878		2004
…		…
1912	#if EV_FORK_ENABLE	2038	#if EV_FORK_ENABLE
1913	assert (forkmax >= forkcnt);	2039	assert (forkmax >= forkcnt);
1914	array_verify (EV_A_ (W *)forks, forkcnt);	2040	array_verify (EV_A_ (W *)forks, forkcnt);
1915	#endif	2041	#endif
1916		2042
		2043	#if EV_CLEANUP_ENABLE
		2044	assert (cleanupmax >= cleanupcnt);
		2045	array_verify (EV_A_ (W *)cleanups, cleanupcnt);
		2046	#endif
		2047
1917	#if EV_ASYNC_ENABLE	2048	#if EV_ASYNC_ENABLE
1918	assert (asyncmax >= asynccnt);	2049	assert (asyncmax >= asynccnt);
1919	array_verify (EV_A_ (W *)asyncs, asynccnt);	2050	array_verify (EV_A_ (W *)asyncs, asynccnt);
1920	#endif	2051	#endif
1921		2052
…		…
1939	}	2070	}
1940	#endif	2071	#endif
1941		2072
1942	#if EV_MULTIPLICITY	2073	#if EV_MULTIPLICITY
1943	struct ev_loop *	2074	struct ev_loop *
1944	ev_default_loop_init (unsigned int flags)
1945	#else	2075	#else
1946	int	2076	int
		2077	#endif
1947	ev_default_loop (unsigned int flags)	2078	ev_default_loop (unsigned int flags)
1948	#endif
1949	{	2079	{
1950	if (!ev_default_loop_ptr)	2080	if (!ev_default_loop_ptr)
1951	{	2081	{
1952	#if EV_MULTIPLICITY	2082	#if EV_MULTIPLICITY
1953	EV_P = ev_default_loop_ptr = &default_loop_struct;	2083	EV_P = ev_default_loop_ptr = &default_loop_struct;
…		…
1972		2102
1973	return ev_default_loop_ptr;	2103	return ev_default_loop_ptr;
1974	}	2104	}
1975		2105
1976	void	2106	void
1977	ev_default_destroy (void)	2107	ev_loop_fork (EV_P)
1978	{	2108	{
1979	#if EV_MULTIPLICITY
1980	EV_P = ev_default_loop_ptr;
1981	#endif
1982
1983	ev_default_loop_ptr = 0;
1984
1985	#if EV_CHILD_ENABLE
1986	ev_ref (EV_A); /* child watcher */
1987	ev_signal_stop (EV_A_ &childev);
1988	#endif
1989
1990	loop_destroy (EV_A);
1991	}
1992
1993	void
1994	ev_default_fork (void)
1995	{
1996	#if EV_MULTIPLICITY
1997	EV_P = ev_default_loop_ptr;
1998	#endif
1999
2000	postfork = 1; /* must be in line with ev_loop_fork */	2109	postfork = 1; /* must be in line with ev_default_fork */
2001	}	2110	}
2002		2111
2003	/*****************************************************************************/	2112	/*****************************************************************************/
2004		2113
2005	void	2114	void
…		…
2027		2136
2028	for (pri = NUMPRI; pri--; )	2137	for (pri = NUMPRI; pri--; )
2029	while (pendingcnt [pri])	2138	while (pendingcnt [pri])
2030	{	2139	{
2031	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	2140	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
2032
2033	/assert (("libev: non-pending watcher on pending list", p->w->pending));/
2034	/* ^ this is no longer true, as pending_w could be here */
2035		2141
2036	p->w->pending = 0;	2142	p->w->pending = 0;
2037	EV_CB_INVOKE (p->w, p->events);	2143	EV_CB_INVOKE (p->w, p->events);
2038	EV_FREQUENT_CHECK;	2144	EV_FREQUENT_CHECK;
2039	}	2145	}
…		…
2096	EV_FREQUENT_CHECK;	2202	EV_FREQUENT_CHECK;
2097	feed_reverse (EV_A_ (W)w);	2203	feed_reverse (EV_A_ (W)w);
2098	}	2204	}
2099	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);	2205	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2100		2206
2101	feed_reverse_done (EV_A_ EV_TIMEOUT);	2207	feed_reverse_done (EV_A_ EV_TIMER);
2102	}	2208	}
2103	}	2209	}
2104		2210
2105	#if EV_PERIODIC_ENABLE	2211	#if EV_PERIODIC_ENABLE
		2212
		2213	inline_speed void
		2214	periodic_recalc (EV_P_ ev_periodic *w)
		2215	{
		2216	/* TODO: use slow but potentially more correct incremental algo, */
		2217	/* also do not rely on ceil */
		2218	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2219	}
		2220
2106	/* make periodics pending */	2221	/* make periodics pending */
2107	inline_size void	2222	inline_size void
2108	periodics_reify (EV_P)	2223	periodics_reify (EV_P)
2109	{	2224	{
2110	EV_FREQUENT_CHECK;	2225	EV_FREQUENT_CHECK;
…		…
2129	ANHE_at_cache (periodics [HEAP0]);	2244	ANHE_at_cache (periodics [HEAP0]);
2130	downheap (periodics, periodiccnt, HEAP0);	2245	downheap (periodics, periodiccnt, HEAP0);
2131	}	2246	}
2132	else if (w->interval)	2247	else if (w->interval)
2133	{	2248	{
2134	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2249	periodic_recalc (EV_A_ w);
		2250
2135	/* if next trigger time is not sufficiently in the future, put it there */	2251	/* if next trigger time is not sufficiently in the future, put it there */
2136	/* this might happen because of floating point inexactness */	2252	/* this might happen because of floating point inexactness */
2137	if (ev_at (w) - ev_rt_now < TIME_EPSILON)	2253	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2138	{	2254	{
2139	ev_at (w) += w->interval;	2255	ev_at (w) += w->interval;
…		…
2159	feed_reverse_done (EV_A_ EV_PERIODIC);	2275	feed_reverse_done (EV_A_ EV_PERIODIC);
2160	}	2276	}
2161	}	2277	}
2162		2278
2163	/* simply recalculate all periodics */	2279	/* simply recalculate all periodics */
2164	/* TODO: maybe ensure that at leats one event happens when jumping forward? */	2280	/* TODO: maybe ensure that at least one event happens when jumping forward? */
2165	static void noinline	2281	static void noinline
2166	periodics_reschedule (EV_P)	2282	periodics_reschedule (EV_P)
2167	{	2283	{
2168	int i;	2284	int i;
2169		2285
…		…
2173	ev_periodic w = (ev_periodic )ANHE_w (periodics [i]);	2289	ev_periodic w = (ev_periodic )ANHE_w (periodics [i]);
2174		2290
2175	if (w->reschedule_cb)	2291	if (w->reschedule_cb)
2176	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2292	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2177	else if (w->interval)	2293	else if (w->interval)
2178	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2294	periodic_recalc (EV_A_ w);
2179		2295
2180	ANHE_at_cache (periodics [i]);	2296	ANHE_at_cache (periodics [i]);
2181	}	2297	}
2182		2298
2183	reheap (periodics, periodiccnt);	2299	reheap (periodics, periodiccnt);
…		…
2265	mn_now = ev_rt_now;	2381	mn_now = ev_rt_now;
2266	}	2382	}
2267	}	2383	}
2268		2384
2269	void	2385	void
2270	ev_loop (EV_P_ int flags)	2386	ev_run (EV_P_ int flags)
2271	{	2387	{
2272	#if EV_FEATURE_API	2388	#if EV_FEATURE_API
2273	++loop_depth;	2389	++loop_depth;
2274	#endif	2390	#endif
2275		2391
2276	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));	2392	assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2277		2393
2278	loop_done = EVUNLOOP_CANCEL;	2394	loop_done = EVBREAK_CANCEL;
2279		2395
2280	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */	2396	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2281		2397
2282	do	2398	do
2283	{	2399	{
2284	#if EV_VERIFY >= 2	2400	#if EV_VERIFY >= 2
2285	ev_loop_verify (EV_A);	2401	ev_verify (EV_A);
2286	#endif	2402	#endif
2287		2403
2288	#ifndef _WIN32	2404	#ifndef _WIN32
2289	if (expect_false (curpid)) /* penalise the forking check even more */	2405	if (expect_false (curpid)) /* penalise the forking check even more */
2290	if (expect_false (getpid () != curpid))	2406	if (expect_false (getpid () != curpid))
…		…
2326	/* calculate blocking time */	2442	/* calculate blocking time */
2327	{	2443	{
2328	ev_tstamp waittime = 0.;	2444	ev_tstamp waittime = 0.;
2329	ev_tstamp sleeptime = 0.;	2445	ev_tstamp sleeptime = 0.;
2330		2446
		2447	/* remember old timestamp for io_blocktime calculation */
		2448	ev_tstamp prev_mn_now = mn_now;
		2449
		2450	/* update time to cancel out callback processing overhead */
		2451	time_update (EV_A_ 1e100);
		2452
2331	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))	2453	if (expect_true (!(flags & EVRUN_NOWAIT \|\| idleall \|\| !activecnt)))
2332	{	2454	{
2333	/* remember old timestamp for io_blocktime calculation */
2334	ev_tstamp prev_mn_now = mn_now;
2335
2336	/* update time to cancel out callback processing overhead */
2337	time_update (EV_A_ 1e100);
2338
2339	waittime = MAX_BLOCKTIME;	2455	waittime = MAX_BLOCKTIME;
2340		2456
2341	if (timercnt)	2457	if (timercnt)
2342	{	2458	{
2343	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;	2459	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
…		…
2373	}	2489	}
2374		2490
2375	#if EV_FEATURE_API	2491	#if EV_FEATURE_API
2376	++loop_count;	2492	++loop_count;
2377	#endif	2493	#endif
2378	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */	2494	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2379	backend_poll (EV_A_ waittime);	2495	backend_poll (EV_A_ waittime);
2380	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */	2496	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2381		2497
2382	/* update ev_rt_now, do magic */	2498	/* update ev_rt_now, do magic */
2383	time_update (EV_A_ waittime + sleeptime);	2499	time_update (EV_A_ waittime + sleeptime);
2384	}	2500	}
2385		2501
…		…
2403	EV_INVOKE_PENDING;	2519	EV_INVOKE_PENDING;
2404	}	2520	}
2405	while (expect_true (	2521	while (expect_true (
2406	activecnt	2522	activecnt
2407	&& !loop_done	2523	&& !loop_done
2408	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))	2524	&& !(flags & (EVRUN_ONCE \| EVRUN_NOWAIT))
2409	));	2525	));
2410		2526
2411	if (loop_done == EVUNLOOP_ONE)	2527	if (loop_done == EVBREAK_ONE)
2412	loop_done = EVUNLOOP_CANCEL;	2528	loop_done = EVBREAK_CANCEL;
2413		2529
2414	#if EV_FEATURE_API	2530	#if EV_FEATURE_API
2415	--loop_depth;	2531	--loop_depth;
2416	#endif	2532	#endif
2417	}	2533	}
2418		2534
2419	void	2535	void
2420	ev_unloop (EV_P_ int how)	2536	ev_break (EV_P_ int how)
2421	{	2537	{
2422	loop_done = how;	2538	loop_done = how;
2423	}	2539	}
2424		2540
2425	void	2541	void
…		…
2573	EV_FREQUENT_CHECK;	2689	EV_FREQUENT_CHECK;
2574		2690
2575	wlist_del (&anfds[w->fd].head, (WL)w);	2691	wlist_del (&anfds[w->fd].head, (WL)w);
2576	ev_stop (EV_A_ (W)w);	2692	ev_stop (EV_A_ (W)w);
2577		2693
2578	fd_change (EV_A_ w->fd, 1);	2694	fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2579		2695
2580	EV_FREQUENT_CHECK;	2696	EV_FREQUENT_CHECK;
2581	}	2697	}
2582		2698
2583	void noinline	2699	void noinline
…		…
2675	if (w->reschedule_cb)	2791	if (w->reschedule_cb)
2676	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2792	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2677	else if (w->interval)	2793	else if (w->interval)
2678	{	2794	{
2679	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));	2795	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2680	/* this formula differs from the one in periodic_reify because we do not always round up */	2796	periodic_recalc (EV_A_ w);
2681	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2682	}	2797	}
2683	else	2798	else
2684	ev_at (w) = w->offset;	2799	ev_at (w) = w->offset;
2685		2800
2686	EV_FREQUENT_CHECK;	2801	EV_FREQUENT_CHECK;
…		…
2807	sa.sa_handler = ev_sighandler;	2922	sa.sa_handler = ev_sighandler;
2808	sigfillset (&sa.sa_mask);	2923	sigfillset (&sa.sa_mask);
2809	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2924	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2810	sigaction (w->signum, &sa, 0);	2925	sigaction (w->signum, &sa, 0);
2811		2926
		2927	if (origflags & EVFLAG_NOSIGMASK)
		2928	{
2812	sigemptyset (&sa.sa_mask);	2929	sigemptyset (&sa.sa_mask);
2813	sigaddset (&sa.sa_mask, w->signum);	2930	sigaddset (&sa.sa_mask, w->signum);
2814	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);	2931	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
		2932	}
2815	#endif	2933	#endif
2816	}	2934	}
2817		2935
2818	EV_FREQUENT_CHECK;	2936	EV_FREQUENT_CHECK;
2819	}	2937	}
…		…
3035	{	3153	{
3036	struct inotify_event ev = (struct inotify_event )(buf + ofs);	3154	struct inotify_event ev = (struct inotify_event )(buf + ofs);
3037	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3155	infy_wd (EV_A_ ev->wd, ev->wd, ev);
3038	ofs += sizeof (struct inotify_event) + ev->len;	3156	ofs += sizeof (struct inotify_event) + ev->len;
3039	}	3157	}
3040	}
3041
3042	inline_size unsigned int
3043	ev_linux_version (void)
3044	{
3045	struct utsname buf;
3046	unsigned int v;
3047	int i;
3048	char *p = buf.release;
3049
3050	if (uname (&buf))
3051	return 0;
3052
3053	for (i = 3+1; --i; )
3054	{
3055	unsigned int c = 0;
3056
3057	for (;;)
3058	{
3059	if (p >= '0' && p <= '9')
3060	c = c * 10 + *p++ - '0';
3061	else
3062	{
3063	p += *p == '.';
3064	break;
3065	}
3066	}
3067
3068	v = (v << 8) \| c;
3069	}
3070
3071	return v;
3072	}	3158	}
3073		3159
3074	inline_size void	3160	inline_size void
3075	ev_check_2625 (EV_P)	3161	ev_check_2625 (EV_P)
3076	{	3162	{
…		…
3400		3486
3401	#if EV_EMBED_ENABLE	3487	#if EV_EMBED_ENABLE
3402	void noinline	3488	void noinline
3403	ev_embed_sweep (EV_P_ ev_embed *w)	3489	ev_embed_sweep (EV_P_ ev_embed *w)
3404	{	3490	{
3405	ev_loop (w->other, EVLOOP_NONBLOCK);	3491	ev_run (w->other, EVRUN_NOWAIT);
3406	}	3492	}
3407		3493
3408	static void	3494	static void
3409	embed_io_cb (EV_P_ ev_io *io, int revents)	3495	embed_io_cb (EV_P_ ev_io *io, int revents)
3410	{	3496	{
3411	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	3497	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
3412		3498
3413	if (ev_cb (w))	3499	if (ev_cb (w))
3414	ev_feed_event (EV_A_ (W)w, EV_EMBED);	3500	ev_feed_event (EV_A_ (W)w, EV_EMBED);
3415	else	3501	else
3416	ev_loop (w->other, EVLOOP_NONBLOCK);	3502	ev_run (w->other, EVRUN_NOWAIT);
3417	}	3503	}
3418		3504
3419	static void	3505	static void
3420	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3506	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3421	{	3507	{
…		…
3425	EV_P = w->other;	3511	EV_P = w->other;
3426		3512
3427	while (fdchangecnt)	3513	while (fdchangecnt)
3428	{	3514	{
3429	fd_reify (EV_A);	3515	fd_reify (EV_A);
3430	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3516	ev_run (EV_A_ EVRUN_NOWAIT);
3431	}	3517	}
3432	}	3518	}
3433	}	3519	}
3434		3520
3435	static void	3521	static void
…		…
3441		3527
3442	{	3528	{
3443	EV_P = w->other;	3529	EV_P = w->other;
3444		3530
3445	ev_loop_fork (EV_A);	3531	ev_loop_fork (EV_A);
3446	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3532	ev_run (EV_A_ EVRUN_NOWAIT);
3447	}	3533	}
3448		3534
3449	ev_embed_start (EV_A_ w);	3535	ev_embed_start (EV_A_ w);
3450	}	3536	}
3451		3537
…		…
3543		3629
3544	EV_FREQUENT_CHECK;	3630	EV_FREQUENT_CHECK;
3545	}	3631	}
3546	#endif	3632	#endif
3547		3633
3548	#if EV_ASYNC_ENABLE	3634	#if EV_CLEANUP_ENABLE
3549	void	3635	void
3550	ev_async_start (EV_P_ ev_async *w)	3636	ev_cleanup_start (EV_P_ ev_cleanup *w)
3551	{	3637	{
3552	if (expect_false (ev_is_active (w)))	3638	if (expect_false (ev_is_active (w)))
3553	return;	3639	return;
		3640
		3641	EV_FREQUENT_CHECK;
		3642
		3643	ev_start (EV_A_ (W)w, ++cleanupcnt);
		3644	array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
		3645	cleanups [cleanupcnt - 1] = w;
		3646
		3647	/* cleanup watchers should never keep a refcount on the loop */
		3648	ev_unref (EV_A);
		3649	EV_FREQUENT_CHECK;
		3650	}
		3651
		3652	void
		3653	ev_cleanup_stop (EV_P_ ev_cleanup *w)
		3654	{
		3655	clear_pending (EV_A_ (W)w);
		3656	if (expect_false (!ev_is_active (w)))
		3657	return;
		3658
		3659	EV_FREQUENT_CHECK;
		3660	ev_ref (EV_A);
		3661
		3662	{
		3663	int active = ev_active (w);
		3664
		3665	cleanups [active - 1] = cleanups [--cleanupcnt];
		3666	ev_active (cleanups [active - 1]) = active;
		3667	}
		3668
		3669	ev_stop (EV_A_ (W)w);
		3670
		3671	EV_FREQUENT_CHECK;
		3672	}
		3673	#endif
		3674
		3675	#if EV_ASYNC_ENABLE
		3676	void
		3677	ev_async_start (EV_P_ ev_async *w)
		3678	{
		3679	if (expect_false (ev_is_active (w)))
		3680	return;
		3681
		3682	w->sent = 0;
3554		3683
3555	evpipe_init (EV_A);	3684	evpipe_init (EV_A);
3556		3685
3557	EV_FREQUENT_CHECK;	3686	EV_FREQUENT_CHECK;
3558		3687
…		…
3636	{	3765	{
3637	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));	3766	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
3638		3767
3639	if (expect_false (!once))	3768	if (expect_false (!once))
3640	{	3769	{
3641	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	3770	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMER, arg);
3642	return;	3771	return;
3643	}	3772	}
3644		3773
3645	once->cb = cb;	3774	once->cb = cb;
3646	once->arg = arg;	3775	once->arg = arg;
…		…
3778		3907
3779	#if EV_MULTIPLICITY	3908	#if EV_MULTIPLICITY
3780	#include "ev_wrap.h"	3909	#include "ev_wrap.h"
3781	#endif	3910	#endif
3782		3911
3783	#ifdef __cplusplus	3912	EV_CPP(})
3784	}
3785	#endif
3786		3913

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Comparing libev/ev.c (file contents): Revision 1.339 by root, Tue Mar 16 00:43:22 2010 UTC vs. Revision 1.371 by root, Mon Feb 7 21:45:32 2011 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.339 by root, Tue Mar 16 00:43:22 2010 UTC vs.
Revision 1.371 by root, Mon Feb 7 21:45:32 2011 UTC