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

Comparing libev/ev.c (file contents):
Revision 1.292 by root, Mon Jun 29 07:22:56 2009 UTC vs.
Revision 1.330 by root, Tue Mar 9 08:46:17 2010 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 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009,2010 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	*
110	# define EV_USE_EPOLL 0	110	# define EV_USE_EPOLL 0
111	# endif	111	# endif
112	# endif	112	# endif
113		113
114	# ifndef EV_USE_KQUEUE	114	# ifndef EV_USE_KQUEUE
115	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	115	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
116	# define EV_USE_KQUEUE 1	116	# define EV_USE_KQUEUE 1
117	# else	117	# else
118	# define EV_USE_KQUEUE 0	118	# define EV_USE_KQUEUE 0
119	# endif	119	# endif
120	# endif	120	# endif
…		…
133	# else	133	# else
134	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
135	# endif	135	# endif
136	# endif	136	# endif
137		137
		138	# ifndef EV_USE_SIGNALFD
		139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		140	# define EV_USE_SIGNALFD 1
		141	# else
		142	# define EV_USE_SIGNALFD 0
		143	# endif
		144	# endif
		145
138	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
139	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
140	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD 1
141	# else	149	# else
142	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
…		…
145		153
146	#endif	154	#endif
147		155
148	#include <math.h>	156	#include <math.h>
149	#include <stdlib.h>	157	#include <stdlib.h>
		158	#include <string.h>
150	#include <fcntl.h>	159	#include <fcntl.h>
151	#include <stddef.h>	160	#include <stddef.h>
152		161
153	#include <stdio.h>	162	#include <stdio.h>
154		163
155	#include <assert.h>	164	#include <assert.h>
156	#include <errno.h>	165	#include <errno.h>
157	#include <sys/types.h>	166	#include <sys/types.h>
158	#include <time.h>	167	#include <time.h>
		168	#include <limits.h>
159		169
160	#include <signal.h>	170	#include <signal.h>
161		171
162	#ifdef EV_H	172	#ifdef EV_H
163	# include EV_H	173	# include EV_H
…		…
178	# endif	188	# endif
179	#endif	189	#endif
180		190
181	/* this block tries to deduce configuration from header-defined symbols and defaults */	191	/* this block tries to deduce configuration from header-defined symbols and defaults */
182		192
		193	/* try to deduce the maximum number of signals on this platform */
		194	#if defined (EV_NSIG)
		195	/* use what's provided */
		196	#elif defined (NSIG)
		197	# define EV_NSIG (NSIG)
		198	#elif defined(_NSIG)
		199	# define EV_NSIG (_NSIG)
		200	#elif defined (SIGMAX)
		201	# define EV_NSIG (SIGMAX+1)
		202	#elif defined (SIG_MAX)
		203	# define EV_NSIG (SIG_MAX+1)
		204	#elif defined (_SIG_MAX)
		205	# define EV_NSIG (_SIG_MAX+1)
		206	#elif defined (MAXSIG)
		207	# define EV_NSIG (MAXSIG+1)
		208	#elif defined (MAX_SIG)
		209	# define EV_NSIG (MAX_SIG+1)
		210	#elif defined (SIGARRAYSIZE)
		211	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		212	#elif defined (_sys_nsig)
		213	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		214	#else
		215	# error "unable to find value for NSIG, please report"
		216	/* to make it compile regardless, just remove the above line */
		217	# define EV_NSIG 65
		218	#endif
		219
183	#ifndef EV_USE_CLOCK_SYSCALL	220	#ifndef EV_USE_CLOCK_SYSCALL
184	# if __linux && __GLIBC__ >= 2	221	# if __linux && __GLIBC__ >= 2
185	# define EV_USE_CLOCK_SYSCALL 1	222	# define EV_USE_CLOCK_SYSCALL 1
186	# else	223	# else
187	# define EV_USE_CLOCK_SYSCALL 0	224	# define EV_USE_CLOCK_SYSCALL 0
…		…
263	#ifndef EV_USE_EVENTFD	300	#ifndef EV_USE_EVENTFD
264	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))	301	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265	# define EV_USE_EVENTFD 1	302	# define EV_USE_EVENTFD 1
266	# else	303	# else
267	# define EV_USE_EVENTFD 0	304	# define EV_USE_EVENTFD 0
		305	# endif
		306	#endif
		307
		308	#ifndef EV_USE_SIGNALFD
		309	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		310	# define EV_USE_SIGNALFD 1
		311	# else
		312	# define EV_USE_SIGNALFD 0
268	# endif	313	# endif
269	#endif	314	#endif
270		315
271	#if 0 /* debugging */	316	#if 0 /* debugging */
272	# define EV_VERIFY 3	317	# define EV_VERIFY 3
…		…
300	# endif	345	# endif
301	#endif	346	#endif
302		347
303	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	348	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
304		349
		350	#ifdef _AIX
		351	/* AIX has a completely broken poll.h header */
		352	# undef EV_USE_POLL
		353	# define EV_USE_POLL 0
		354	#endif
		355
305	#ifndef CLOCK_MONOTONIC	356	#ifndef CLOCK_MONOTONIC
306	# undef EV_USE_MONOTONIC	357	# undef EV_USE_MONOTONIC
307	# define EV_USE_MONOTONIC 0	358	# define EV_USE_MONOTONIC 0
308	#endif	359	#endif
309		360
…		…
339	#endif	390	#endif
340		391
341	#if EV_USE_EVENTFD	392	#if EV_USE_EVENTFD
342	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	393	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343	# include <stdint.h>	394	# include <stdint.h>
		395	# ifndef EFD_NONBLOCK
		396	# define EFD_NONBLOCK O_NONBLOCK
		397	# endif
		398	# ifndef EFD_CLOEXEC
		399	# ifdef O_CLOEXEC
		400	# define EFD_CLOEXEC O_CLOEXEC
		401	# else
		402	# define EFD_CLOEXEC 02000000
		403	# endif
		404	# endif
344	# ifdef __cplusplus	405	# ifdef __cplusplus
345	extern "C" {	406	extern "C" {
346	# endif	407	# endif
347	int eventfd (unsigned int initval, int flags);	408	int (eventfd) (unsigned int initval, int flags);
348	# ifdef __cplusplus	409	# ifdef __cplusplus
349	}	410	}
350	# endif	411	# endif
351	#endif	412	#endif
		413
		414	#if EV_USE_SIGNALFD
		415	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		416	# include <stdint.h>
		417	# ifndef SFD_NONBLOCK
		418	# define SFD_NONBLOCK O_NONBLOCK
		419	# endif
		420	# ifndef SFD_CLOEXEC
		421	# ifdef O_CLOEXEC
		422	# define SFD_CLOEXEC O_CLOEXEC
		423	# else
		424	# define SFD_CLOEXEC 02000000
		425	# endif
		426	# endif
		427	# ifdef __cplusplus
		428	extern "C" {
		429	# endif
		430	int signalfd (int fd, const sigset_t *mask, int flags);
		431
		432	struct signalfd_siginfo
		433	{
		434	uint32_t ssi_signo;
		435	char pad[128 - sizeof (uint32_t)];
		436	};
		437	# ifdef __cplusplus
		438	}
		439	# endif
		440	#endif
		441
352		442
353	/**/	443	/**/
354		444
355	#if EV_VERIFY >= 3	445	#if EV_VERIFY >= 3
356	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	446	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
…		…
368	*/	458	*/
369	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	459	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
370		460
371	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	461	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
372	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	462	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
373	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds, TODO */
374		463
375	#if __GNUC__ >= 4	464	#if __GNUC__ >= 4
376	# define expect(expr,value) __builtin_expect ((expr),(value))	465	# define expect(expr,value) __builtin_expect ((expr),(value))
377	# define noinline __attribute__ ((noinline))	466	# define noinline __attribute__ ((noinline))
378	#else	467	#else
…		…
391	# define inline_speed static noinline	480	# define inline_speed static noinline
392	#else	481	#else
393	# define inline_speed static inline	482	# define inline_speed static inline
394	#endif	483	#endif
395		484
396	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	485	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		486
		487	#if EV_MINPRI == EV_MAXPRI
		488	# define ABSPRI(w) (((W)w), 0)
		489	#else
397	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	490	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		491	#endif
398		492
399	#define EMPTY /* required for microsofts broken pseudo-c compiler */	493	#define EMPTY /* required for microsofts broken pseudo-c compiler */
400	#define EMPTY2(a,b) /* used to suppress some warnings */	494	#define EMPTY2(a,b) /* used to suppress some warnings */
401		495
402	typedef ev_watcher *W;	496	typedef ev_watcher *W;
…		…
414		508
415	#if EV_USE_MONOTONIC	509	#if EV_USE_MONOTONIC
416	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	510	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417	#endif	511	#endif
418		512
		513	#ifndef EV_FD_TO_WIN32_HANDLE
		514	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		515	#endif
		516	#ifndef EV_WIN32_HANDLE_TO_FD
		517	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		518	#endif
		519	#ifndef EV_WIN32_CLOSE_FD
		520	# define EV_WIN32_CLOSE_FD(fd) close (fd)
		521	#endif
		522
419	#ifdef _WIN32	523	#ifdef _WIN32
420	# include "ev_win32.c"	524	# include "ev_win32.c"
421	#endif	525	#endif
422		526
423	/*****************************************************************************/	527	/*****************************************************************************/
…		…
438		542
439	if (syserr_cb)	543	if (syserr_cb)
440	syserr_cb (msg);	544	syserr_cb (msg);
441	else	545	else
442	{	546	{
		547	#if EV_AVOID_STDIO
		548	write (STDERR_FILENO, msg, strlen (msg));
		549	write (STDERR_FILENO, ": ", 2);
		550	msg = strerror (errno);
		551	write (STDERR_FILENO, msg, strlen (msg));
		552	write (STDERR_FILENO, "\n", 1);
		553	#else
443	perror (msg);	554	perror (msg);
		555	#endif
444	abort ();	556	abort ();
445	}	557	}
446	}	558	}
447		559
448	static void *	560	static void *
…		…
473	{	585	{
474	ptr = alloc (ptr, size);	586	ptr = alloc (ptr, size);
475		587
476	if (!ptr && size)	588	if (!ptr && size)
477	{	589	{
		590	#if EV_AVOID_STDIO
		591	write (STDERR_FILENO, "libev: memory allocation failed, aborting.",
		592	sizeof ("libev: memory allocation failed, aborting.") - 1);
		593	#else
478	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	594	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		595	#endif
479	abort ();	596	abort ();
480	}	597	}
481		598
482	return ptr;	599	return ptr;
483	}	600	}
…		…
485	#define ev_malloc(size) ev_realloc (0, (size))	602	#define ev_malloc(size) ev_realloc (0, (size))
486	#define ev_free(ptr) ev_realloc ((ptr), 0)	603	#define ev_free(ptr) ev_realloc ((ptr), 0)
487		604
488	/*****************************************************************************/	605	/*****************************************************************************/
489		606
		607	/* set in reify when reification needed */
		608	#define EV_ANFD_REIFY 1
		609
490	/* file descriptor info structure */	610	/* file descriptor info structure */
491	typedef struct	611	typedef struct
492	{	612	{
493	WL head;	613	WL head;
494	unsigned char events; /* the events watched for */	614	unsigned char events; /* the events watched for */
495	unsigned char reify; /* flag set when this ANFD needs reification */	615	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
496	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */	616	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
497	unsigned char unused;	617	unsigned char unused;
498	#if EV_USE_EPOLL	618	#if EV_USE_EPOLL
499	unsigned int egen; /* generation counter to counter epoll bugs */	619	unsigned int egen; /* generation counter to counter epoll bugs */
500	#endif	620	#endif
…		…
562		682
563	static int ev_default_loop_ptr;	683	static int ev_default_loop_ptr;
564		684
565	#endif	685	#endif
566		686
		687	#if EV_MINIMAL < 2
		688	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		689	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		690	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		691	#else
		692	# define EV_RELEASE_CB (void)0
		693	# define EV_ACQUIRE_CB (void)0
		694	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		695	#endif
		696
		697	#define EVUNLOOP_RECURSE 0x80
		698
567	/*****************************************************************************/	699	/*****************************************************************************/
568		700
569	#ifndef EV_HAVE_EV_TIME	701	#ifndef EV_HAVE_EV_TIME
570	ev_tstamp	702	ev_tstamp
571	ev_time (void)	703	ev_time (void)
…		…
627		759
628	tv.tv_sec = (time_t)delay;	760	tv.tv_sec = (time_t)delay;
629	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	761	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
630		762
631	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	763	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
632	/* somehting nto guaranteed by newer posix versions, but guaranteed */	764	/* something not guaranteed by newer posix versions, but guaranteed */
633	/* by older ones */	765	/* by older ones */
634	select (0, 0, 0, 0, &tv);	766	select (0, 0, 0, 0, &tv);
635	#endif	767	#endif
636	}	768	}
637	}	769	}
…		…
745	}	877	}
746		878
747	/*****************************************************************************/	879	/*****************************************************************************/
748		880
749	inline_speed void	881	inline_speed void
750	fd_event (EV_P_ int fd, int revents)	882	fd_event_nc (EV_P_ int fd, int revents)
751	{	883	{
752	ANFD *anfd = anfds + fd;	884	ANFD *anfd = anfds + fd;
753	ev_io *w;	885	ev_io *w;
754		886
755	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	887	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
…		…
759	if (ev)	891	if (ev)
760	ev_feed_event (EV_A_ (W)w, ev);	892	ev_feed_event (EV_A_ (W)w, ev);
761	}	893	}
762	}	894	}
763		895
		896	/* do not submit kernel events for fds that have reify set */
		897	/* because that means they changed while we were polling for new events */
		898	inline_speed void
		899	fd_event (EV_P_ int fd, int revents)
		900	{
		901	ANFD *anfd = anfds + fd;
		902
		903	if (expect_true (!anfd->reify))
		904	fd_event_nc (EV_A_ fd, revents);
		905	}
		906
764	void	907	void
765	ev_feed_fd_event (EV_P_ int fd, int revents)	908	ev_feed_fd_event (EV_P_ int fd, int revents)
766	{	909	{
767	if (fd >= 0 && fd < anfdmax)	910	if (fd >= 0 && fd < anfdmax)
768	fd_event (EV_A_ fd, revents);	911	fd_event_nc (EV_A_ fd, revents);
769	}	912	}
770		913
771	/* make sure the external fd watch events are in-sync */	914	/* make sure the external fd watch events are in-sync */
772	/* with the kernel/libev internal state */	915	/* with the kernel/libev internal state */
773	inline_size void	916	inline_size void
…		…
788		931
789	#if EV_SELECT_IS_WINSOCKET	932	#if EV_SELECT_IS_WINSOCKET
790	if (events)	933	if (events)
791	{	934	{
792	unsigned long arg;	935	unsigned long arg;
793	#ifdef EV_FD_TO_WIN32_HANDLE
794	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	936	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
795	#else
796	anfd->handle = _get_osfhandle (fd);
797	#endif
798	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	937	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
799	}	938	}
800	#endif	939	#endif
801		940
802	{	941	{
…		…
845	/* check whether the given fd is atcually valid, for error recovery */	984	/* check whether the given fd is atcually valid, for error recovery */
846	inline_size int	985	inline_size int
847	fd_valid (int fd)	986	fd_valid (int fd)
848	{	987	{
849	#ifdef _WIN32	988	#ifdef _WIN32
850	return _get_osfhandle (fd) != -1;	989	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
851	#else	990	#else
852	return fcntl (fd, F_GETFD) != -1;	991	return fcntl (fd, F_GETFD) != -1;
853	#endif	992	#endif
854	}	993	}
855		994
…		…
873		1012
874	for (fd = anfdmax; fd--; )	1013	for (fd = anfdmax; fd--; )
875	if (anfds [fd].events)	1014	if (anfds [fd].events)
876	{	1015	{
877	fd_kill (EV_A_ fd);	1016	fd_kill (EV_A_ fd);
878	return;	1017	break;
879	}	1018	}
880	}	1019	}
881		1020
882	/* usually called after fork if backend needs to re-arm all fds from scratch */	1021	/* usually called after fork if backend needs to re-arm all fds from scratch */
883	static void noinline	1022	static void noinline
…		…
888	for (fd = 0; fd < anfdmax; ++fd)	1027	for (fd = 0; fd < anfdmax; ++fd)
889	if (anfds [fd].events)	1028	if (anfds [fd].events)
890	{	1029	{
891	anfds [fd].events = 0;	1030	anfds [fd].events = 0;
892	anfds [fd].emask = 0;	1031	anfds [fd].emask = 0;
893	fd_change (EV_A_ fd, EV__IOFDSET \| 1);	1032	fd_change (EV_A_ fd, EV__IOFDSET \| EV_ANFD_REIFY);
894	}	1033	}
895	}	1034	}
896		1035
897	/*****************************************************************************/	1036	/*****************************************************************************/
898		1037
…		…
973		1112
974	for (;;)	1113	for (;;)
975	{	1114	{
976	int c = k << 1;	1115	int c = k << 1;
977		1116
978	if (c > N + HEAP0 - 1)	1117	if (c >= N + HEAP0)
979	break;	1118	break;
980		1119
981	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1120	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
982	? 1 : 0;	1121	? 1 : 0;
983		1122
…		…
1019		1158
1020	/* move an element suitably so it is in a correct place */	1159	/* move an element suitably so it is in a correct place */
1021	inline_size void	1160	inline_size void
1022	adjustheap (ANHE *heap, int N, int k)	1161	adjustheap (ANHE *heap, int N, int k)
1023	{	1162	{
1024	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1163	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1025	upheap (heap, k);	1164	upheap (heap, k);
1026	else	1165	else
1027	downheap (heap, N, k);	1166	downheap (heap, N, k);
1028	}	1167	}
1029		1168
…		…
1042	/*****************************************************************************/	1181	/*****************************************************************************/
1043		1182
1044	/* associate signal watchers to a signal signal */	1183	/* associate signal watchers to a signal signal */
1045	typedef struct	1184	typedef struct
1046	{	1185	{
		1186	EV_ATOMIC_T pending;
		1187	#if EV_MULTIPLICITY
		1188	EV_P;
		1189	#endif
1047	WL head;	1190	WL head;
1048	EV_ATOMIC_T gotsig;
1049	} ANSIG;	1191	} ANSIG;
1050		1192
1051	static ANSIG *signals;	1193	static ANSIG signals [EV_NSIG - 1];
1052	static int signalmax;
1053
1054	static EV_ATOMIC_T gotsig;
1055		1194
1056	/*****************************************************************************/	1195	/*****************************************************************************/
1057		1196
1058	/* used to prepare libev internal fd's */	1197	/* used to prepare libev internal fd's */
1059	/* this is not fork-safe */	1198	/* this is not fork-safe */
1060	inline_speed void	1199	inline_speed void
1061	fd_intern (int fd)	1200	fd_intern (int fd)
1062	{	1201	{
1063	#ifdef _WIN32	1202	#ifdef _WIN32
1064	unsigned long arg = 1;	1203	unsigned long arg = 1;
1065	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1204	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1066	#else	1205	#else
1067	fcntl (fd, F_SETFD, FD_CLOEXEC);	1206	fcntl (fd, F_SETFD, FD_CLOEXEC);
1068	fcntl (fd, F_SETFL, O_NONBLOCK);	1207	fcntl (fd, F_SETFL, O_NONBLOCK);
1069	#endif	1208	#endif
1070	}	1209	}
…		…
1073	evpipe_init (EV_P)	1212	evpipe_init (EV_P)
1074	{	1213	{
1075	if (!ev_is_active (&pipe_w))	1214	if (!ev_is_active (&pipe_w))
1076	{	1215	{
1077	#if EV_USE_EVENTFD	1216	#if EV_USE_EVENTFD
		1217	evfd = eventfd (0, EFD_NONBLOCK \| EFD_CLOEXEC);
		1218	if (evfd < 0 && errno == EINVAL)
1078	if ((evfd = eventfd (0, 0)) >= 0)	1219	evfd = eventfd (0, 0);
		1220
		1221	if (evfd >= 0)
1079	{	1222	{
1080	evpipe [0] = -1;	1223	evpipe [0] = -1;
1081	fd_intern (evfd);	1224	fd_intern (evfd); /* doing it twice doesn't hurt */
1082	ev_io_set (&pipe_w, evfd, EV_READ);	1225	ev_io_set (&pipe_w, evfd, EV_READ);
1083	}	1226	}
1084	else	1227	else
1085	#endif	1228	#endif
1086	{	1229	{
…		…
1123	/* called whenever the libev signal pipe */	1266	/* called whenever the libev signal pipe */
1124	/* got some events (signal, async) */	1267	/* got some events (signal, async) */
1125	static void	1268	static void
1126	pipecb (EV_P_ ev_io *iow, int revents)	1269	pipecb (EV_P_ ev_io *iow, int revents)
1127	{	1270	{
		1271	int i;
		1272
1128	#if EV_USE_EVENTFD	1273	#if EV_USE_EVENTFD
1129	if (evfd >= 0)	1274	if (evfd >= 0)
1130	{	1275	{
1131	uint64_t counter;	1276	uint64_t counter;
1132	read (evfd, &counter, sizeof (uint64_t));	1277	read (evfd, &counter, sizeof (uint64_t));
…		…
1136	{	1281	{
1137	char dummy;	1282	char dummy;
1138	read (evpipe [0], &dummy, 1);	1283	read (evpipe [0], &dummy, 1);
1139	}	1284	}
1140		1285
1141	if (gotsig && ev_is_default_loop (EV_A))	1286	if (sig_pending)
1142	{	1287	{
1143	int signum;	1288	sig_pending = 0;
1144	gotsig = 0;
1145		1289
1146	for (signum = signalmax; signum--; )	1290	for (i = EV_NSIG - 1; i--; )
1147	if (signals [signum].gotsig)	1291	if (expect_false (signals [i].pending))
1148	ev_feed_signal_event (EV_A_ signum + 1);	1292	ev_feed_signal_event (EV_A_ i + 1);
1149	}	1293	}
1150		1294
1151	#if EV_ASYNC_ENABLE	1295	#if EV_ASYNC_ENABLE
1152	if (gotasync)	1296	if (async_pending)
1153	{	1297	{
1154	int i;	1298	async_pending = 0;
1155	gotasync = 0;
1156		1299
1157	for (i = asynccnt; i--; )	1300	for (i = asynccnt; i--; )
1158	if (asyncs [i]->sent)	1301	if (asyncs [i]->sent)
1159	{	1302	{
1160	asyncs [i]->sent = 0;	1303	asyncs [i]->sent = 0;
…		…
1168		1311
1169	static void	1312	static void
1170	ev_sighandler (int signum)	1313	ev_sighandler (int signum)
1171	{	1314	{
1172	#if EV_MULTIPLICITY	1315	#if EV_MULTIPLICITY
1173	struct ev_loop *loop = &default_loop_struct;	1316	EV_P = signals [signum - 1].loop;
1174	#endif	1317	#endif
1175		1318
1176	#if _WIN32	1319	#ifdef _WIN32
1177	signal (signum, ev_sighandler);	1320	signal (signum, ev_sighandler);
1178	#endif	1321	#endif
1179		1322
1180	signals [signum - 1].gotsig = 1;	1323	signals [signum - 1].pending = 1;
1181	evpipe_write (EV_A_ &gotsig);	1324	evpipe_write (EV_A_ &sig_pending);
1182	}	1325	}
1183		1326
1184	void noinline	1327	void noinline
1185	ev_feed_signal_event (EV_P_ int signum)	1328	ev_feed_signal_event (EV_P_ int signum)
1186	{	1329	{
1187	WL w;	1330	WL w;
1188		1331
		1332	if (expect_false (signum <= 0 \|\| signum > EV_NSIG))
		1333	return;
		1334
		1335	--signum;
		1336
1189	#if EV_MULTIPLICITY	1337	#if EV_MULTIPLICITY
1190	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1338	/* it is permissible to try to feed a signal to the wrong loop */
1191	#endif	1339	/* or, likely more useful, feeding a signal nobody is waiting for */
1192		1340
1193	--signum;	1341	if (expect_false (signals [signum].loop != EV_A))
1194
1195	if (signum < 0 \|\| signum >= signalmax)
1196	return;	1342	return;
		1343	#endif
1197		1344
1198	signals [signum].gotsig = 0;	1345	signals [signum].pending = 0;
1199		1346
1200	for (w = signals [signum].head; w; w = w->next)	1347	for (w = signals [signum].head; w; w = w->next)
1201	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1348	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1202	}	1349	}
		1350
		1351	#if EV_USE_SIGNALFD
		1352	static void
		1353	sigfdcb (EV_P_ ev_io *iow, int revents)
		1354	{
		1355	struct signalfd_siginfo si[2], sip; / these structs are big */
		1356
		1357	for (;;)
		1358	{
		1359	ssize_t res = read (sigfd, si, sizeof (si));
		1360
		1361	/* not ISO-C, as res might be -1, but works with SuS */
		1362	for (sip = si; (char )sip < (char )si + res; ++sip)
		1363	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1364
		1365	if (res < (ssize_t)sizeof (si))
		1366	break;
		1367	}
		1368	}
		1369	#endif
1203		1370
1204	/*****************************************************************************/	1371	/*****************************************************************************/
1205		1372
1206	static WL childs [EV_PID_HASHSIZE];	1373	static WL childs [EV_PID_HASHSIZE];
1207		1374
…		…
1352	ev_backend (EV_P)	1519	ev_backend (EV_P)
1353	{	1520	{
1354	return backend;	1521	return backend;
1355	}	1522	}
1356		1523
		1524	#if EV_MINIMAL < 2
1357	unsigned int	1525	unsigned int
1358	ev_loop_count (EV_P)	1526	ev_loop_count (EV_P)
1359	{	1527	{
1360	return loop_count;	1528	return loop_count;
1361	}	1529	}
1362		1530
		1531	unsigned int
		1532	ev_loop_depth (EV_P)
		1533	{
		1534	return loop_depth;
		1535	}
		1536
1363	void	1537	void
1364	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1538	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1365	{	1539	{
1366	io_blocktime = interval;	1540	io_blocktime = interval;
1367	}	1541	}
…		…
1369	void	1543	void
1370	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1544	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1371	{	1545	{
1372	timeout_blocktime = interval;	1546	timeout_blocktime = interval;
1373	}	1547	}
		1548
		1549	void
		1550	ev_set_userdata (EV_P_ void *data)
		1551	{
		1552	userdata = data;
		1553	}
		1554
		1555	void *
		1556	ev_userdata (EV_P)
		1557	{
		1558	return userdata;
		1559	}
		1560
		1561	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1562	{
		1563	invoke_cb = invoke_pending_cb;
		1564	}
		1565
		1566	void ev_set_loop_release_cb (EV_P_ void (release)(EV_P), void (acquire)(EV_P))
		1567	{
		1568	release_cb = release;
		1569	acquire_cb = acquire;
		1570	}
		1571	#endif
1374		1572
1375	/* initialise a loop structure, must be zero-initialised */	1573	/* initialise a loop structure, must be zero-initialised */
1376	static void noinline	1574	static void noinline
1377	loop_init (EV_P_ unsigned int flags)	1575	loop_init (EV_P_ unsigned int flags)
1378	{	1576	{
…		…
1396	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1594	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1397	have_monotonic = 1;	1595	have_monotonic = 1;
1398	}	1596	}
1399	#endif	1597	#endif
1400		1598
		1599	/* pid check not overridable via env */
		1600	#ifndef _WIN32
		1601	if (flags & EVFLAG_FORKCHECK)
		1602	curpid = getpid ();
		1603	#endif
		1604
		1605	if (!(flags & EVFLAG_NOENV)
		1606	&& !enable_secure ()
		1607	&& getenv ("LIBEV_FLAGS"))
		1608	flags = atoi (getenv ("LIBEV_FLAGS"));
		1609
1401	ev_rt_now = ev_time ();	1610	ev_rt_now = ev_time ();
1402	mn_now = get_clock ();	1611	mn_now = get_clock ();
1403	now_floor = mn_now;	1612	now_floor = mn_now;
1404	rtmn_diff = ev_rt_now - mn_now;	1613	rtmn_diff = ev_rt_now - mn_now;
		1614	#if EV_MINIMAL < 2
		1615	invoke_cb = ev_invoke_pending;
		1616	#endif
1405		1617
1406	io_blocktime = 0.;	1618	io_blocktime = 0.;
1407	timeout_blocktime = 0.;	1619	timeout_blocktime = 0.;
1408	backend = 0;	1620	backend = 0;
1409	backend_fd = -1;	1621	backend_fd = -1;
1410	gotasync = 0;	1622	sig_pending = 0;
		1623	#if EV_ASYNC_ENABLE
		1624	async_pending = 0;
		1625	#endif
1411	#if EV_USE_INOTIFY	1626	#if EV_USE_INOTIFY
1412	fs_fd = -2;	1627	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1413	#endif	1628	#endif
1414		1629	#if EV_USE_SIGNALFD
1415	/* pid check not overridable via env */	1630	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1416	#ifndef _WIN32
1417	if (flags & EVFLAG_FORKCHECK)
1418	curpid = getpid ();
1419	#endif	1631	#endif
1420
1421	if (!(flags & EVFLAG_NOENV)
1422	&& !enable_secure ()
1423	&& getenv ("LIBEV_FLAGS"))
1424	flags = atoi (getenv ("LIBEV_FLAGS"));
1425		1632
1426	if (!(flags & 0x0000ffffU))	1633	if (!(flags & 0x0000ffffU))
1427	flags \|= ev_recommended_backends ();	1634	flags \|= ev_recommended_backends ();
1428		1635
1429	#if EV_USE_PORT	1636	#if EV_USE_PORT
…		…
1455	{	1662	{
1456	int i;	1663	int i;
1457		1664
1458	if (ev_is_active (&pipe_w))	1665	if (ev_is_active (&pipe_w))
1459	{	1666	{
1460	ev_ref (EV_A); /* signal watcher */	1667	/ev_ref (EV_A);/
1461	ev_io_stop (EV_A_ &pipe_w);	1668	/ev_io_stop (EV_A_ &pipe_w);/
1462		1669
1463	#if EV_USE_EVENTFD	1670	#if EV_USE_EVENTFD
1464	if (evfd >= 0)	1671	if (evfd >= 0)
1465	close (evfd);	1672	close (evfd);
1466	#endif	1673	#endif
1467		1674
1468	if (evpipe [0] >= 0)	1675	if (evpipe [0] >= 0)
1469	{	1676	{
1470	close (evpipe [0]);	1677	EV_WIN32_CLOSE_FD (evpipe [0]);
1471	close (evpipe [1]);	1678	EV_WIN32_CLOSE_FD (evpipe [1]);
1472	}	1679	}
1473	}	1680	}
		1681
		1682	#if EV_USE_SIGNALFD
		1683	if (ev_is_active (&sigfd_w))
		1684	close (sigfd);
		1685	#endif
1474		1686
1475	#if EV_USE_INOTIFY	1687	#if EV_USE_INOTIFY
1476	if (fs_fd >= 0)	1688	if (fs_fd >= 0)
1477	close (fs_fd);	1689	close (fs_fd);
1478	#endif	1690	#endif
…		…
1502	#if EV_IDLE_ENABLE	1714	#if EV_IDLE_ENABLE
1503	array_free (idle, [i]);	1715	array_free (idle, [i]);
1504	#endif	1716	#endif
1505	}	1717	}
1506		1718
1507	ev_free (anfds); anfdmax = 0;	1719	ev_free (anfds); anfds = 0; anfdmax = 0;
1508		1720
1509	/* have to use the microsoft-never-gets-it-right macro */	1721	/* have to use the microsoft-never-gets-it-right macro */
1510	array_free (rfeed, EMPTY);	1722	array_free (rfeed, EMPTY);
1511	array_free (fdchange, EMPTY);	1723	array_free (fdchange, EMPTY);
1512	array_free (timer, EMPTY);	1724	array_free (timer, EMPTY);
…		…
1547		1759
1548	if (ev_is_active (&pipe_w))	1760	if (ev_is_active (&pipe_w))
1549	{	1761	{
1550	/* this "locks" the handlers against writing to the pipe */	1762	/* this "locks" the handlers against writing to the pipe */
1551	/* while we modify the fd vars */	1763	/* while we modify the fd vars */
1552	gotsig = 1;	1764	sig_pending = 1;
1553	#if EV_ASYNC_ENABLE	1765	#if EV_ASYNC_ENABLE
1554	gotasync = 1;	1766	async_pending = 1;
1555	#endif	1767	#endif
1556		1768
1557	ev_ref (EV_A);	1769	ev_ref (EV_A);
1558	ev_io_stop (EV_A_ &pipe_w);	1770	ev_io_stop (EV_A_ &pipe_w);
1559		1771
…		…
1562	close (evfd);	1774	close (evfd);
1563	#endif	1775	#endif
1564		1776
1565	if (evpipe [0] >= 0)	1777	if (evpipe [0] >= 0)
1566	{	1778	{
1567	close (evpipe [0]);	1779	EV_WIN32_CLOSE_FD (evpipe [0]);
1568	close (evpipe [1]);	1780	EV_WIN32_CLOSE_FD (evpipe [1]);
1569	}	1781	}
1570		1782
1571	evpipe_init (EV_A);	1783	evpipe_init (EV_A);
1572	/* now iterate over everything, in case we missed something */	1784	/* now iterate over everything, in case we missed something */
1573	pipecb (EV_A_ &pipe_w, EV_READ);	1785	pipecb (EV_A_ &pipe_w, EV_READ);
…		…
1579	#if EV_MULTIPLICITY	1791	#if EV_MULTIPLICITY
1580		1792
1581	struct ev_loop *	1793	struct ev_loop *
1582	ev_loop_new (unsigned int flags)	1794	ev_loop_new (unsigned int flags)
1583	{	1795	{
1584	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	1796	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1585		1797
1586	memset (loop, 0, sizeof (struct ev_loop));	1798	memset (EV_A, 0, sizeof (struct ev_loop));
1587
1588	loop_init (EV_A_ flags);	1799	loop_init (EV_A_ flags);
1589		1800
1590	if (ev_backend (EV_A))	1801	if (ev_backend (EV_A))
1591	return loop;	1802	return EV_A;
1592		1803
1593	return 0;	1804	return 0;
1594	}	1805	}
1595		1806
1596	void	1807	void
…		…
1603	void	1814	void
1604	ev_loop_fork (EV_P)	1815	ev_loop_fork (EV_P)
1605	{	1816	{
1606	postfork = 1; /* must be in line with ev_default_fork */	1817	postfork = 1; /* must be in line with ev_default_fork */
1607	}	1818	}
		1819	#endif /* multiplicity */
1608		1820
1609	#if EV_VERIFY	1821	#if EV_VERIFY
1610	static void noinline	1822	static void noinline
1611	verify_watcher (EV_P_ W w)	1823	verify_watcher (EV_P_ W w)
1612	{	1824	{
…		…
1640	verify_watcher (EV_A_ ws [cnt]);	1852	verify_watcher (EV_A_ ws [cnt]);
1641	}	1853	}
1642	}	1854	}
1643	#endif	1855	#endif
1644		1856
		1857	#if EV_MINIMAL < 2
1645	void	1858	void
1646	ev_loop_verify (EV_P)	1859	ev_loop_verify (EV_P)
1647	{	1860	{
1648	#if EV_VERIFY	1861	#if EV_VERIFY
1649	int i;	1862	int i;
…		…
1698	assert (checkmax >= checkcnt);	1911	assert (checkmax >= checkcnt);
1699	array_verify (EV_A_ (W *)checks, checkcnt);	1912	array_verify (EV_A_ (W *)checks, checkcnt);
1700		1913
1701	# if 0	1914	# if 0
1702	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	1915	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
1703	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1916	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1704	# endif
1705	#endif	1917	# endif
		1918	#endif
1706	}	1919	}
1707		1920	#endif
1708	#endif /* multiplicity */
1709		1921
1710	#if EV_MULTIPLICITY	1922	#if EV_MULTIPLICITY
1711	struct ev_loop *	1923	struct ev_loop *
1712	ev_default_loop_init (unsigned int flags)	1924	ev_default_loop_init (unsigned int flags)
1713	#else	1925	#else
…		…
1716	#endif	1928	#endif
1717	{	1929	{
1718	if (!ev_default_loop_ptr)	1930	if (!ev_default_loop_ptr)
1719	{	1931	{
1720	#if EV_MULTIPLICITY	1932	#if EV_MULTIPLICITY
1721	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1933	EV_P = ev_default_loop_ptr = &default_loop_struct;
1722	#else	1934	#else
1723	ev_default_loop_ptr = 1;	1935	ev_default_loop_ptr = 1;
1724	#endif	1936	#endif
1725		1937
1726	loop_init (EV_A_ flags);	1938	loop_init (EV_A_ flags);
…		…
1743		1955
1744	void	1956	void
1745	ev_default_destroy (void)	1957	ev_default_destroy (void)
1746	{	1958	{
1747	#if EV_MULTIPLICITY	1959	#if EV_MULTIPLICITY
1748	struct ev_loop *loop = ev_default_loop_ptr;	1960	EV_P = ev_default_loop_ptr;
1749	#endif	1961	#endif
1750		1962
1751	ev_default_loop_ptr = 0;	1963	ev_default_loop_ptr = 0;
1752		1964
1753	#ifndef _WIN32	1965	#ifndef _WIN32
…		…
1760		1972
1761	void	1973	void
1762	ev_default_fork (void)	1974	ev_default_fork (void)
1763	{	1975	{
1764	#if EV_MULTIPLICITY	1976	#if EV_MULTIPLICITY
1765	struct ev_loop *loop = ev_default_loop_ptr;	1977	EV_P = ev_default_loop_ptr;
1766	#endif	1978	#endif
1767		1979
1768	postfork = 1; /* must be in line with ev_loop_fork */	1980	postfork = 1; /* must be in line with ev_loop_fork */
1769	}	1981	}
1770		1982
…		…
1774	ev_invoke (EV_P_ void *w, int revents)	1986	ev_invoke (EV_P_ void *w, int revents)
1775	{	1987	{
1776	EV_CB_INVOKE ((W)w, revents);	1988	EV_CB_INVOKE ((W)w, revents);
1777	}	1989	}
1778		1990
1779	inline_speed void	1991	unsigned int
1780	call_pending (EV_P)	1992	ev_pending_count (EV_P)
		1993	{
		1994	int pri;
		1995	unsigned int count = 0;
		1996
		1997	for (pri = NUMPRI; pri--; )
		1998	count += pendingcnt [pri];
		1999
		2000	return count;
		2001	}
		2002
		2003	void noinline
		2004	ev_invoke_pending (EV_P)
1781	{	2005	{
1782	int pri;	2006	int pri;
1783		2007
1784	for (pri = NUMPRI; pri--; )	2008	for (pri = NUMPRI; pri--; )
1785	while (pendingcnt [pri])	2009	while (pendingcnt [pri])
…		…
1953	ANHE_at_cache (*he);	2177	ANHE_at_cache (*he);
1954	}	2178	}
1955	}	2179	}
1956		2180
1957	/* fetch new monotonic and realtime times from the kernel */	2181	/* fetch new monotonic and realtime times from the kernel */
1958	/* also detetc if there was a timejump, and act accordingly */	2182	/* also detect if there was a timejump, and act accordingly */
1959	inline_speed void	2183	inline_speed void
1960	time_update (EV_P_ ev_tstamp max_block)	2184	time_update (EV_P_ ev_tstamp max_block)
1961	{	2185	{
1962	#if EV_USE_MONOTONIC	2186	#if EV_USE_MONOTONIC
1963	if (expect_true (have_monotonic))	2187	if (expect_true (have_monotonic))
…		…
2020		2244
2021	mn_now = ev_rt_now;	2245	mn_now = ev_rt_now;
2022	}	2246	}
2023	}	2247	}
2024		2248
2025	static int loop_done;
2026
2027	void	2249	void
2028	ev_loop (EV_P_ int flags)	2250	ev_loop (EV_P_ int flags)
2029	{	2251	{
		2252	#if EV_MINIMAL < 2
		2253	++loop_depth;
		2254	#endif
		2255
		2256	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2257
2030	loop_done = EVUNLOOP_CANCEL;	2258	loop_done = EVUNLOOP_CANCEL;
2031		2259
2032	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2260	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2033		2261
2034	do	2262	do
2035	{	2263	{
2036	#if EV_VERIFY >= 2	2264	#if EV_VERIFY >= 2
2037	ev_loop_verify (EV_A);	2265	ev_loop_verify (EV_A);
…		…
2050	/* we might have forked, so queue fork handlers */	2278	/* we might have forked, so queue fork handlers */
2051	if (expect_false (postfork))	2279	if (expect_false (postfork))
2052	if (forkcnt)	2280	if (forkcnt)
2053	{	2281	{
2054	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2282	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2055	call_pending (EV_A);	2283	EV_INVOKE_PENDING;
2056	}	2284	}
2057	#endif	2285	#endif
2058		2286
2059	/* queue prepare watchers (and execute them) */	2287	/* queue prepare watchers (and execute them) */
2060	if (expect_false (preparecnt))	2288	if (expect_false (preparecnt))
2061	{	2289	{
2062	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2290	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2063	call_pending (EV_A);	2291	EV_INVOKE_PENDING;
2064	}	2292	}
		2293
		2294	if (expect_false (loop_done))
		2295	break;
2065		2296
2066	/* we might have forked, so reify kernel state if necessary */	2297	/* we might have forked, so reify kernel state if necessary */
2067	if (expect_false (postfork))	2298	if (expect_false (postfork))
2068	loop_fork (EV_A);	2299	loop_fork (EV_A);
2069		2300
…		…
2075	ev_tstamp waittime = 0.;	2306	ev_tstamp waittime = 0.;
2076	ev_tstamp sleeptime = 0.;	2307	ev_tstamp sleeptime = 0.;
2077		2308
2078	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))	2309	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
2079	{	2310	{
		2311	/* remember old timestamp for io_blocktime calculation */
		2312	ev_tstamp prev_mn_now = mn_now;
		2313
2080	/* update time to cancel out callback processing overhead */	2314	/* update time to cancel out callback processing overhead */
2081	time_update (EV_A_ 1e100);	2315	time_update (EV_A_ 1e100);
2082		2316
2083	waittime = MAX_BLOCKTIME;	2317	waittime = MAX_BLOCKTIME;
2084		2318
…		…
2094	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2328	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2095	if (waittime > to) waittime = to;	2329	if (waittime > to) waittime = to;
2096	}	2330	}
2097	#endif	2331	#endif
2098		2332
		2333	/* don't let timeouts decrease the waittime below timeout_blocktime */
2099	if (expect_false (waittime < timeout_blocktime))	2334	if (expect_false (waittime < timeout_blocktime))
2100	waittime = timeout_blocktime;	2335	waittime = timeout_blocktime;
2101		2336
2102	sleeptime = waittime - backend_fudge;	2337	/* extra check because io_blocktime is commonly 0 */
2103
2104	if (expect_true (sleeptime > io_blocktime))	2338	if (expect_false (io_blocktime))
2105	sleeptime = io_blocktime;
2106
2107	if (sleeptime)
2108	{	2339	{
		2340	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2341
		2342	if (sleeptime > waittime - backend_fudge)
		2343	sleeptime = waittime - backend_fudge;
		2344
		2345	if (expect_true (sleeptime > 0.))
		2346	{
2109	ev_sleep (sleeptime);	2347	ev_sleep (sleeptime);
2110	waittime -= sleeptime;	2348	waittime -= sleeptime;
		2349	}
2111	}	2350	}
2112	}	2351	}
2113		2352
		2353	#if EV_MINIMAL < 2
2114	++loop_count;	2354	++loop_count;
		2355	#endif
		2356	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2115	backend_poll (EV_A_ waittime);	2357	backend_poll (EV_A_ waittime);
		2358	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2116		2359
2117	/* update ev_rt_now, do magic */	2360	/* update ev_rt_now, do magic */
2118	time_update (EV_A_ waittime + sleeptime);	2361	time_update (EV_A_ waittime + sleeptime);
2119	}	2362	}
2120		2363
…		…
2131		2374
2132	/* queue check watchers, to be executed first */	2375	/* queue check watchers, to be executed first */
2133	if (expect_false (checkcnt))	2376	if (expect_false (checkcnt))
2134	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2377	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2135		2378
2136	call_pending (EV_A);	2379	EV_INVOKE_PENDING;
2137	}	2380	}
2138	while (expect_true (	2381	while (expect_true (
2139	activecnt	2382	activecnt
2140	&& !loop_done	2383	&& !loop_done
2141	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))	2384	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))
2142	));	2385	));
2143		2386
2144	if (loop_done == EVUNLOOP_ONE)	2387	if (loop_done == EVUNLOOP_ONE)
2145	loop_done = EVUNLOOP_CANCEL;	2388	loop_done = EVUNLOOP_CANCEL;
		2389
		2390	#if EV_MINIMAL < 2
		2391	--loop_depth;
		2392	#endif
2146	}	2393	}
2147		2394
2148	void	2395	void
2149	ev_unloop (EV_P_ int how)	2396	ev_unloop (EV_P_ int how)
2150	{	2397	{
…		…
2201	inline_size void	2448	inline_size void
2202	wlist_del (WL *head, WL elem)	2449	wlist_del (WL *head, WL elem)
2203	{	2450	{
2204	while (*head)	2451	while (*head)
2205	{	2452	{
2206	if (*head == elem)	2453	if (expect_true (*head == elem))
2207	{	2454	{
2208	*head = elem->next;	2455	*head = elem->next;
2209	return;	2456	break;
2210	}	2457	}
2211		2458
2212	head = &(*head)->next;	2459	head = &(*head)->next;
2213	}	2460	}
2214	}	2461	}
…		…
2242	}	2489	}
2243		2490
2244	inline_size void	2491	inline_size void
2245	pri_adjust (EV_P_ W w)	2492	pri_adjust (EV_P_ W w)
2246	{	2493	{
2247	int pri = w->priority;	2494	int pri = ev_priority (w);
2248	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2495	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2249	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2496	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2250	w->priority = pri;	2497	ev_set_priority (w, pri);
2251	}	2498	}
2252		2499
2253	inline_speed void	2500	inline_speed void
2254	ev_start (EV_P_ W w, int active)	2501	ev_start (EV_P_ W w, int active)
2255	{	2502	{
…		…
2274		2521
2275	if (expect_false (ev_is_active (w)))	2522	if (expect_false (ev_is_active (w)))
2276	return;	2523	return;
2277		2524
2278	assert (("libev: ev_io_start called with negative fd", fd >= 0));	2525	assert (("libev: ev_io_start called with negative fd", fd >= 0));
2279	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET \| EV_READ \| EV_WRITE))));	2526	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET \| EV_READ \| EV_WRITE))));
2280		2527
2281	EV_FREQUENT_CHECK;	2528	EV_FREQUENT_CHECK;
2282		2529
2283	ev_start (EV_A_ (W)w, 1);	2530	ev_start (EV_A_ (W)w, 1);
2284	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2531	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2285	wlist_add (&anfds[fd].head, (WL)w);	2532	wlist_add (&anfds[fd].head, (WL)w);
2286		2533
2287	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| 1);	2534	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| EV_ANFD_REIFY);
2288	w->events &= ~EV__IOFDSET;	2535	w->events &= ~EV__IOFDSET;
2289		2536
2290	EV_FREQUENT_CHECK;	2537	EV_FREQUENT_CHECK;
2291	}	2538	}
2292		2539
…		…
2354	timers [active] = timers [timercnt + HEAP0];	2601	timers [active] = timers [timercnt + HEAP0];
2355	adjustheap (timers, timercnt, active);	2602	adjustheap (timers, timercnt, active);
2356	}	2603	}
2357	}	2604	}
2358		2605
2359	EV_FREQUENT_CHECK;
2360
2361	ev_at (w) -= mn_now;	2606	ev_at (w) -= mn_now;
2362		2607
2363	ev_stop (EV_A_ (W)w);	2608	ev_stop (EV_A_ (W)w);
		2609
		2610	EV_FREQUENT_CHECK;
2364	}	2611	}
2365		2612
2366	void noinline	2613	void noinline
2367	ev_timer_again (EV_P_ ev_timer *w)	2614	ev_timer_again (EV_P_ ev_timer *w)
2368	{	2615	{
…		…
2386	}	2633	}
2387		2634
2388	EV_FREQUENT_CHECK;	2635	EV_FREQUENT_CHECK;
2389	}	2636	}
2390		2637
		2638	ev_tstamp
		2639	ev_timer_remaining (EV_P_ ev_timer *w)
		2640	{
		2641	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2642	}
		2643
2391	#if EV_PERIODIC_ENABLE	2644	#if EV_PERIODIC_ENABLE
2392	void noinline	2645	void noinline
2393	ev_periodic_start (EV_P_ ev_periodic *w)	2646	ev_periodic_start (EV_P_ ev_periodic *w)
2394	{	2647	{
2395	if (expect_false (ev_is_active (w)))	2648	if (expect_false (ev_is_active (w)))
…		…
2441	periodics [active] = periodics [periodiccnt + HEAP0];	2694	periodics [active] = periodics [periodiccnt + HEAP0];
2442	adjustheap (periodics, periodiccnt, active);	2695	adjustheap (periodics, periodiccnt, active);
2443	}	2696	}
2444	}	2697	}
2445		2698
2446	EV_FREQUENT_CHECK;
2447
2448	ev_stop (EV_A_ (W)w);	2699	ev_stop (EV_A_ (W)w);
		2700
		2701	EV_FREQUENT_CHECK;
2449	}	2702	}
2450		2703
2451	void noinline	2704	void noinline
2452	ev_periodic_again (EV_P_ ev_periodic *w)	2705	ev_periodic_again (EV_P_ ev_periodic *w)
2453	{	2706	{
…		…
2462	#endif	2715	#endif
2463		2716
2464	void noinline	2717	void noinline
2465	ev_signal_start (EV_P_ ev_signal *w)	2718	ev_signal_start (EV_P_ ev_signal *w)
2466	{	2719	{
2467	#if EV_MULTIPLICITY
2468	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2469	#endif
2470	if (expect_false (ev_is_active (w)))	2720	if (expect_false (ev_is_active (w)))
2471	return;	2721	return;
2472		2722
2473	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2723	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2474		2724
2475	evpipe_init (EV_A);	2725	#if EV_MULTIPLICITY
		2726	assert (("libev: a signal must not be attached to two different loops",
		2727	!signals [w->signum - 1].loop \|\| signals [w->signum - 1].loop == loop));
2476		2728
2477	EV_FREQUENT_CHECK;	2729	signals [w->signum - 1].loop = EV_A;
		2730	#endif
2478		2731
		2732	EV_FREQUENT_CHECK;
		2733
		2734	#if EV_USE_SIGNALFD
		2735	if (sigfd == -2)
2479	{	2736	{
2480	#ifndef _WIN32	2737	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK \| SFD_CLOEXEC);
2481	sigset_t full, prev;	2738	if (sigfd < 0 && errno == EINVAL)
2482	sigfillset (&full);	2739	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2483	sigprocmask (SIG_SETMASK, &full, &prev);
2484	#endif
2485		2740
2486	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);	2741	if (sigfd >= 0)
		2742	{
		2743	fd_intern (sigfd); /* doing it twice will not hurt */
2487		2744
2488	#ifndef _WIN32	2745	sigemptyset (&sigfd_set);
2489	sigprocmask (SIG_SETMASK, &prev, 0);	2746
2490	#endif	2747	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2748	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2749	ev_io_start (EV_A_ &sigfd_w);
		2750	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2751	}
2491	}	2752	}
		2753
		2754	if (sigfd >= 0)
		2755	{
		2756	/* TODO: check .head */
		2757	sigaddset (&sigfd_set, w->signum);
		2758	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2759
		2760	signalfd (sigfd, &sigfd_set, 0);
		2761	}
		2762	#endif
2492		2763
2493	ev_start (EV_A_ (W)w, 1);	2764	ev_start (EV_A_ (W)w, 1);
2494	wlist_add (&signals [w->signum - 1].head, (WL)w);	2765	wlist_add (&signals [w->signum - 1].head, (WL)w);
2495		2766
2496	if (!((WL)w)->next)	2767	if (!((WL)w)->next)
		2768	# if EV_USE_SIGNALFD
		2769	if (sigfd < 0) /TODO/
		2770	# endif
2497	{	2771	{
2498	#if _WIN32	2772	# ifdef _WIN32
		2773	evpipe_init (EV_A);
		2774
2499	signal (w->signum, ev_sighandler);	2775	signal (w->signum, ev_sighandler);
2500	#else	2776	# else
2501	struct sigaction sa;	2777	struct sigaction sa;
		2778
		2779	evpipe_init (EV_A);
		2780
2502	sa.sa_handler = ev_sighandler;	2781	sa.sa_handler = ev_sighandler;
2503	sigfillset (&sa.sa_mask);	2782	sigfillset (&sa.sa_mask);
2504	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2783	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2505	sigaction (w->signum, &sa, 0);	2784	sigaction (w->signum, &sa, 0);
		2785
		2786	sigemptyset (&sa.sa_mask);
		2787	sigaddset (&sa.sa_mask, w->signum);
		2788	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2506	#endif	2789	#endif
2507	}	2790	}
2508		2791
2509	EV_FREQUENT_CHECK;	2792	EV_FREQUENT_CHECK;
2510	}	2793	}
2511		2794
2512	void noinline	2795	void noinline
…		…
2520		2803
2521	wlist_del (&signals [w->signum - 1].head, (WL)w);	2804	wlist_del (&signals [w->signum - 1].head, (WL)w);
2522	ev_stop (EV_A_ (W)w);	2805	ev_stop (EV_A_ (W)w);
2523		2806
2524	if (!signals [w->signum - 1].head)	2807	if (!signals [w->signum - 1].head)
		2808	{
		2809	#if EV_MULTIPLICITY
		2810	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2811	#endif
		2812	#if EV_USE_SIGNALFD
		2813	if (sigfd >= 0)
		2814	{
		2815	sigset_t ss;
		2816
		2817	sigemptyset (&ss);
		2818	sigaddset (&ss, w->signum);
		2819	sigdelset (&sigfd_set, w->signum);
		2820
		2821	signalfd (sigfd, &sigfd_set, 0);
		2822	sigprocmask (SIG_UNBLOCK, &ss, 0);
		2823	}
		2824	else
		2825	#endif
2525	signal (w->signum, SIG_DFL);	2826	signal (w->signum, SIG_DFL);
		2827	}
2526		2828
2527	EV_FREQUENT_CHECK;	2829	EV_FREQUENT_CHECK;
2528	}	2830	}
2529		2831
2530	void	2832	void
…		…
2571	#define MIN_STAT_INTERVAL 0.1074891	2873	#define MIN_STAT_INTERVAL 0.1074891
2572		2874
2573	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2875	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2574		2876
2575	#if EV_USE_INOTIFY	2877	#if EV_USE_INOTIFY
2576	# define EV_INOTIFY_BUFSIZE 8192	2878
		2879	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		2880	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2577		2881
2578	static void noinline	2882	static void noinline
2579	infy_add (EV_P_ ev_stat *w)	2883	infy_add (EV_P_ ev_stat *w)
2580	{	2884	{
2581	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB \| IN_DELETE_SELF \| IN_MOVE_SELF \| IN_MODIFY \| IN_DONT_FOLLOW \| IN_MASK_ADD);	2885	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB \| IN_DELETE_SELF \| IN_MOVE_SELF \| IN_MODIFY \| IN_DONT_FOLLOW \| IN_MASK_ADD);
2582		2886
2583	if (w->wd < 0)	2887	if (w->wd >= 0)
		2888	{
		2889	struct statfs sfs;
		2890
		2891	/* now local changes will be tracked by inotify, but remote changes won't */
		2892	/* unless the filesystem is known to be local, we therefore still poll */
		2893	/* also do poll on <2.6.25, but with normal frequency */
		2894
		2895	if (!fs_2625)
		2896	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2897	else if (!statfs (w->path, &sfs)
		2898	&& (sfs.f_type == 0x1373 /* devfs */
		2899	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
		2900	\|\| sfs.f_type == 0x3153464a /* jfs */
		2901	\|\| sfs.f_type == 0x52654973 /* reiser3 */
		2902	\|\| sfs.f_type == 0x01021994 /* tempfs */
		2903	\|\| sfs.f_type == 0x58465342 /* xfs */))
		2904	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2905	else
		2906	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2584	{	2907	}
		2908	else
		2909	{
		2910	/* can't use inotify, continue to stat */
2585	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	2911	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2586	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2587		2912
2588	/* monitor some parent directory for speedup hints */	2913	/* if path is not there, monitor some parent directory for speedup hints */
2589	/* note that exceeding the hardcoded path limit is not a correctness issue, */	2914	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2590	/* but an efficiency issue only */	2915	/* but an efficiency issue only */
2591	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)	2916	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
2592	{	2917	{
2593	char path [4096];	2918	char path [4096];
…		…
2609	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	2934	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
2610	}	2935	}
2611	}	2936	}
2612		2937
2613	if (w->wd >= 0)	2938	if (w->wd >= 0)
2614	{
2615	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2939	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2616		2940
2617	/* now local changes will be tracked by inotify, but remote changes won't */	2941	/* now re-arm timer, if required */
2618	/* unless the filesystem it known to be local, we therefore still poll */	2942	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2619	/* also do poll on <2.6.25, but with normal frequency */
2620	struct statfs sfs;
2621
2622	if (fs_2625 && !statfs (w->path, &sfs))
2623	if (sfs.f_type == 0x1373 /* devfs */
2624	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
2625	\|\| sfs.f_type == 0x3153464a /* jfs */
2626	\|\| sfs.f_type == 0x52654973 /* reiser3 */
2627	\|\| sfs.f_type == 0x01021994 /* tempfs */
2628	\|\| sfs.f_type == 0x58465342 /* xfs */)
2629	return;
2630
2631	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2632	ev_timer_again (EV_A_ &w->timer);	2943	ev_timer_again (EV_A_ &w->timer);
2633	}	2944	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2634	}	2945	}
2635		2946
2636	static void noinline	2947	static void noinline
2637	infy_del (EV_P_ ev_stat *w)	2948	infy_del (EV_P_ ev_stat *w)
2638	{	2949	{
…		…
2683		2994
2684	static void	2995	static void
2685	infy_cb (EV_P_ ev_io *w, int revents)	2996	infy_cb (EV_P_ ev_io *w, int revents)
2686	{	2997	{
2687	char buf [EV_INOTIFY_BUFSIZE];	2998	char buf [EV_INOTIFY_BUFSIZE];
2688	struct inotify_event ev = (struct inotify_event )buf;
2689	int ofs;	2999	int ofs;
2690	int len = read (fs_fd, buf, sizeof (buf));	3000	int len = read (fs_fd, buf, sizeof (buf));
2691		3001
2692	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	3002	for (ofs = 0; ofs < len; )
		3003	{
		3004	struct inotify_event ev = (struct inotify_event )(buf + ofs);
2693	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3005	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		3006	ofs += sizeof (struct inotify_event) + ev->len;
		3007	}
		3008	}
		3009
		3010	inline_size unsigned int
		3011	ev_linux_version (void)
		3012	{
		3013	struct utsname buf;
		3014	unsigned int v;
		3015	int i;
		3016	char *p = buf.release;
		3017
		3018	if (uname (&buf))
		3019	return 0;
		3020
		3021	for (i = 3+1; --i; )
		3022	{
		3023	unsigned int c = 0;
		3024
		3025	for (;;)
		3026	{
		3027	if (p >= '0' && p <= '9')
		3028	c = c * 10 + *p++ - '0';
		3029	else
		3030	{
		3031	p += *p == '.';
		3032	break;
		3033	}
		3034	}
		3035
		3036	v = (v << 8) \| c;
		3037	}
		3038
		3039	return v;
2694	}	3040	}
2695		3041
2696	inline_size void	3042	inline_size void
2697	check_2625 (EV_P)	3043	ev_check_2625 (EV_P)
2698	{	3044	{
2699	/* kernels < 2.6.25 are borked	3045	/* kernels < 2.6.25 are borked
2700	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	3046	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2701	*/	3047	*/
2702	struct utsname buf;	3048	if (ev_linux_version () < 0x020619)
2703	int major, minor, micro;
2704
2705	if (uname (&buf))
2706	return;	3049	return;
2707		3050
2708	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2709	return;
2710
2711	if (major < 2
2712	\|\| (major == 2 && minor < 6)
2713	\|\| (major == 2 && minor == 6 && micro < 25))
2714	return;
2715
2716	fs_2625 = 1;	3051	fs_2625 = 1;
		3052	}
		3053
		3054	inline_size int
		3055	infy_newfd (void)
		3056	{
		3057	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3058	int fd = inotify_init1 (IN_CLOEXEC \| IN_NONBLOCK);
		3059	if (fd >= 0)
		3060	return fd;
		3061	#endif
		3062	return inotify_init ();
2717	}	3063	}
2718		3064
2719	inline_size void	3065	inline_size void
2720	infy_init (EV_P)	3066	infy_init (EV_P)
2721	{	3067	{
2722	if (fs_fd != -2)	3068	if (fs_fd != -2)
2723	return;	3069	return;
2724		3070
2725	fs_fd = -1;	3071	fs_fd = -1;
2726		3072
2727	check_2625 (EV_A);	3073	ev_check_2625 (EV_A);
2728		3074
2729	fs_fd = inotify_init ();	3075	fs_fd = infy_newfd ();
2730		3076
2731	if (fs_fd >= 0)	3077	if (fs_fd >= 0)
2732	{	3078	{
		3079	fd_intern (fs_fd);
2733	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3080	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2734	ev_set_priority (&fs_w, EV_MAXPRI);	3081	ev_set_priority (&fs_w, EV_MAXPRI);
2735	ev_io_start (EV_A_ &fs_w);	3082	ev_io_start (EV_A_ &fs_w);
		3083	ev_unref (EV_A);
2736	}	3084	}
2737	}	3085	}
2738		3086
2739	inline_size void	3087	inline_size void
2740	infy_fork (EV_P)	3088	infy_fork (EV_P)
…		…
2742	int slot;	3090	int slot;
2743		3091
2744	if (fs_fd < 0)	3092	if (fs_fd < 0)
2745	return;	3093	return;
2746		3094
		3095	ev_ref (EV_A);
		3096	ev_io_stop (EV_A_ &fs_w);
2747	close (fs_fd);	3097	close (fs_fd);
2748	fs_fd = inotify_init ();	3098	fs_fd = infy_newfd ();
		3099
		3100	if (fs_fd >= 0)
		3101	{
		3102	fd_intern (fs_fd);
		3103	ev_io_set (&fs_w, fs_fd, EV_READ);
		3104	ev_io_start (EV_A_ &fs_w);
		3105	ev_unref (EV_A);
		3106	}
2749		3107
2750	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3108	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2751	{	3109	{
2752	WL w_ = fs_hash [slot].head;	3110	WL w_ = fs_hash [slot].head;
2753	fs_hash [slot].head = 0;	3111	fs_hash [slot].head = 0;
…		…
2760	w->wd = -1;	3118	w->wd = -1;
2761		3119
2762	if (fs_fd >= 0)	3120	if (fs_fd >= 0)
2763	infy_add (EV_A_ w); /* re-add, no matter what */	3121	infy_add (EV_A_ w); /* re-add, no matter what */
2764	else	3122	else
		3123	{
		3124	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3125	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2765	ev_timer_again (EV_A_ &w->timer);	3126	ev_timer_again (EV_A_ &w->timer);
		3127	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3128	}
2766	}	3129	}
2767	}	3130	}
2768	}	3131	}
2769		3132
2770	#endif	3133	#endif
…		…
2787	static void noinline	3150	static void noinline
2788	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3151	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2789	{	3152	{
2790	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	3153	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
2791		3154
2792	/* we copy this here each the time so that */	3155	ev_statdata prev = w->attr;
2793	/* prev has the old value when the callback gets invoked */
2794	w->prev = w->attr;
2795	ev_stat_stat (EV_A_ w);	3156	ev_stat_stat (EV_A_ w);
2796		3157
2797	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3158	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2798	if (	3159	if (
2799	w->prev.st_dev != w->attr.st_dev	3160	prev.st_dev != w->attr.st_dev
2800	\|\| w->prev.st_ino != w->attr.st_ino	3161	\|\| prev.st_ino != w->attr.st_ino
2801	\|\| w->prev.st_mode != w->attr.st_mode	3162	\|\| prev.st_mode != w->attr.st_mode
2802	\|\| w->prev.st_nlink != w->attr.st_nlink	3163	\|\| prev.st_nlink != w->attr.st_nlink
2803	\|\| w->prev.st_uid != w->attr.st_uid	3164	\|\| prev.st_uid != w->attr.st_uid
2804	\|\| w->prev.st_gid != w->attr.st_gid	3165	\|\| prev.st_gid != w->attr.st_gid
2805	\|\| w->prev.st_rdev != w->attr.st_rdev	3166	\|\| prev.st_rdev != w->attr.st_rdev
2806	\|\| w->prev.st_size != w->attr.st_size	3167	\|\| prev.st_size != w->attr.st_size
2807	\|\| w->prev.st_atime != w->attr.st_atime	3168	\|\| prev.st_atime != w->attr.st_atime
2808	\|\| w->prev.st_mtime != w->attr.st_mtime	3169	\|\| prev.st_mtime != w->attr.st_mtime
2809	\|\| w->prev.st_ctime != w->attr.st_ctime	3170	\|\| prev.st_ctime != w->attr.st_ctime
2810	) {	3171	) {
		3172	/* we only update w->prev on actual differences */
		3173	/* in case we test more often than invoke the callback, */
		3174	/* to ensure that prev is always different to attr */
		3175	w->prev = prev;
		3176
2811	#if EV_USE_INOTIFY	3177	#if EV_USE_INOTIFY
2812	if (fs_fd >= 0)	3178	if (fs_fd >= 0)
2813	{	3179	{
2814	infy_del (EV_A_ w);	3180	infy_del (EV_A_ w);
2815	infy_add (EV_A_ w);	3181	infy_add (EV_A_ w);
…		…
2840		3206
2841	if (fs_fd >= 0)	3207	if (fs_fd >= 0)
2842	infy_add (EV_A_ w);	3208	infy_add (EV_A_ w);
2843	else	3209	else
2844	#endif	3210	#endif
		3211	{
2845	ev_timer_again (EV_A_ &w->timer);	3212	ev_timer_again (EV_A_ &w->timer);
		3213	ev_unref (EV_A);
		3214	}
2846		3215
2847	ev_start (EV_A_ (W)w, 1);	3216	ev_start (EV_A_ (W)w, 1);
2848		3217
2849	EV_FREQUENT_CHECK;	3218	EV_FREQUENT_CHECK;
2850	}	3219	}
…		…
2859	EV_FREQUENT_CHECK;	3228	EV_FREQUENT_CHECK;
2860		3229
2861	#if EV_USE_INOTIFY	3230	#if EV_USE_INOTIFY
2862	infy_del (EV_A_ w);	3231	infy_del (EV_A_ w);
2863	#endif	3232	#endif
		3233
		3234	if (ev_is_active (&w->timer))
		3235	{
		3236	ev_ref (EV_A);
2864	ev_timer_stop (EV_A_ &w->timer);	3237	ev_timer_stop (EV_A_ &w->timer);
		3238	}
2865		3239
2866	ev_stop (EV_A_ (W)w);	3240	ev_stop (EV_A_ (W)w);
2867		3241
2868	EV_FREQUENT_CHECK;	3242	EV_FREQUENT_CHECK;
2869	}	3243	}
…		…
3010	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3384	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3011	{	3385	{
3012	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));	3386	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
3013		3387
3014	{	3388	{
3015	struct ev_loop *loop = w->other;	3389	EV_P = w->other;
3016		3390
3017	while (fdchangecnt)	3391	while (fdchangecnt)
3018	{	3392	{
3019	fd_reify (EV_A);	3393	fd_reify (EV_A);
3020	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3394	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
3028	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));	3402	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));
3029		3403
3030	ev_embed_stop (EV_A_ w);	3404	ev_embed_stop (EV_A_ w);
3031		3405
3032	{	3406	{
3033	struct ev_loop *loop = w->other;	3407	EV_P = w->other;
3034		3408
3035	ev_loop_fork (EV_A);	3409	ev_loop_fork (EV_A);
3036	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3410	ev_loop (EV_A_ EVLOOP_NONBLOCK);
3037	}	3411	}
3038		3412
…		…
3052	{	3426	{
3053	if (expect_false (ev_is_active (w)))	3427	if (expect_false (ev_is_active (w)))
3054	return;	3428	return;
3055		3429
3056	{	3430	{
3057	struct ev_loop *loop = w->other;	3431	EV_P = w->other;
3058	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3432	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3059	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3433	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3060	}	3434	}
3061		3435
3062	EV_FREQUENT_CHECK;	3436	EV_FREQUENT_CHECK;
…		…
3089		3463
3090	ev_io_stop (EV_A_ &w->io);	3464	ev_io_stop (EV_A_ &w->io);
3091	ev_prepare_stop (EV_A_ &w->prepare);	3465	ev_prepare_stop (EV_A_ &w->prepare);
3092	ev_fork_stop (EV_A_ &w->fork);	3466	ev_fork_stop (EV_A_ &w->fork);
3093		3467
		3468	ev_stop (EV_A_ (W)w);
		3469
3094	EV_FREQUENT_CHECK;	3470	EV_FREQUENT_CHECK;
3095	}	3471	}
3096	#endif	3472	#endif
3097		3473
3098	#if EV_FORK_ENABLE	3474	#if EV_FORK_ENABLE
…		…
3174		3550
3175	void	3551	void
3176	ev_async_send (EV_P_ ev_async *w)	3552	ev_async_send (EV_P_ ev_async *w)
3177	{	3553	{
3178	w->sent = 1;	3554	w->sent = 1;
3179	evpipe_write (EV_A_ &gotasync);	3555	evpipe_write (EV_A_ &async_pending);
3180	}	3556	}
3181	#endif	3557	#endif
3182		3558
3183	/*****************************************************************************/	3559	/*****************************************************************************/
3184		3560
…		…
3333	if (types & EV_CHECK)	3709	if (types & EV_CHECK)
3334	for (i = checkcnt; i--; )	3710	for (i = checkcnt; i--; )
3335	cb (EV_A_ EV_CHECK, checks [i]);	3711	cb (EV_A_ EV_CHECK, checks [i]);
3336		3712
3337	if (types & EV_SIGNAL)	3713	if (types & EV_SIGNAL)
3338	for (i = 0; i < signalmax; ++i)	3714	for (i = 0; i < EV_NSIG - 1; ++i)
3339	for (wl = signals [i].head; wl; )	3715	for (wl = signals [i].head; wl; )
3340	{	3716	{
3341	wn = wl->next;	3717	wn = wl->next;
3342	cb (EV_A_ EV_SIGNAL, wl);	3718	cb (EV_A_ EV_SIGNAL, wl);
3343	wl = wn;	3719	wl = wn;

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+Removed lines
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+Changed lines
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Comparing libev/ev.c (file contents): Revision 1.292 by root, Mon Jun 29 07:22:56 2009 UTC vs. Revision 1.330 by root, Tue Mar 9 08:46:17 2010 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.292 by root, Mon Jun 29 07:22:56 2009 UTC vs.
Revision 1.330 by root, Tue Mar 9 08:46:17 2010 UTC