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

Comparing libev/ev.c (file contents):
Revision 1.289 by root, Sat Jun 6 11:13:16 2009 UTC vs.
Revision 1.327 by root, Sun Feb 14 19:09:04 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	*
57	# endif	57	# endif
58	# ifndef EV_USE_MONOTONIC	58	# ifndef EV_USE_MONOTONIC
59	# define EV_USE_MONOTONIC 1	59	# define EV_USE_MONOTONIC 1
60	# endif	60	# endif
61	# endif	61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
62	# endif	64	# endif
63		65
64	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
65	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
66	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
…		…
108	# define EV_USE_EPOLL 0	110	# define EV_USE_EPOLL 0
109	# endif	111	# endif
110	# endif	112	# endif
111		113
112	# ifndef EV_USE_KQUEUE	114	# ifndef EV_USE_KQUEUE
113	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	115	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114	# define EV_USE_KQUEUE 1	116	# define EV_USE_KQUEUE 1
115	# else	117	# else
116	# define EV_USE_KQUEUE 0	118	# define EV_USE_KQUEUE 0
117	# endif	119	# endif
118	# endif	120	# endif
…		…
131	# else	133	# else
132	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
133	# endif	135	# endif
134	# endif	136	# endif
135		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
136	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
137	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
138	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD 1
139	# else	149	# else
140	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
…		…
143		153
144	#endif	154	#endif
145		155
146	#include <math.h>	156	#include <math.h>
147	#include <stdlib.h>	157	#include <stdlib.h>
		158	#include <string.h>
148	#include <fcntl.h>	159	#include <fcntl.h>
149	#include <stddef.h>	160	#include <stddef.h>
150		161
151	#include <stdio.h>	162	#include <stdio.h>
152		163
153	#include <assert.h>	164	#include <assert.h>
154	#include <errno.h>	165	#include <errno.h>
155	#include <sys/types.h>	166	#include <sys/types.h>
156	#include <time.h>	167	#include <time.h>
		168	#include <limits.h>
157		169
158	#include <signal.h>	170	#include <signal.h>
159		171
160	#ifdef EV_H	172	#ifdef EV_H
161	# include EV_H	173	# include EV_H
…		…
176	# endif	188	# endif
177	#endif	189	#endif
178		190
179	/* 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 */
180		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
181	#ifndef EV_USE_CLOCK_SYSCALL	220	#ifndef EV_USE_CLOCK_SYSCALL
182	# if __linux && __GLIBC__ >= 2	221	# if __linux && __GLIBC__ >= 2
183	# define EV_USE_CLOCK_SYSCALL 1	222	# define EV_USE_CLOCK_SYSCALL 1
184	# else	223	# else
185	# define EV_USE_CLOCK_SYSCALL 0	224	# define EV_USE_CLOCK_SYSCALL 0
…		…
264	# else	303	# else
265	# define EV_USE_EVENTFD 0	304	# define EV_USE_EVENTFD 0
266	# endif	305	# endif
267	#endif	306	#endif
268		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
		313	# endif
		314	#endif
		315
269	#if 0 /* debugging */	316	#if 0 /* debugging */
270	# define EV_VERIFY 3	317	# define EV_VERIFY 3
271	# define EV_USE_4HEAP 1	318	# define EV_USE_4HEAP 1
272	# define EV_HEAP_CACHE_AT 1	319	# define EV_HEAP_CACHE_AT 1
273	#endif	320	#endif
…		…
282		329
283	#ifndef EV_HEAP_CACHE_AT	330	#ifndef EV_HEAP_CACHE_AT
284	# define EV_HEAP_CACHE_AT !EV_MINIMAL	331	# define EV_HEAP_CACHE_AT !EV_MINIMAL
285	#endif	332	#endif
286		333
		334	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		335	/* which makes programs even slower. might work on other unices, too. */
		336	#if EV_USE_CLOCK_SYSCALL
		337	# include <syscall.h>
		338	# ifdef SYS_clock_gettime
		339	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		340	# undef EV_USE_MONOTONIC
		341	# define EV_USE_MONOTONIC 1
		342	# else
		343	# undef EV_USE_CLOCK_SYSCALL
		344	# define EV_USE_CLOCK_SYSCALL 0
		345	# endif
		346	#endif
		347
287	/* 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 */
		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
288		355
289	#ifndef CLOCK_MONOTONIC	356	#ifndef CLOCK_MONOTONIC
290	# undef EV_USE_MONOTONIC	357	# undef EV_USE_MONOTONIC
291	# define EV_USE_MONOTONIC 0	358	# define EV_USE_MONOTONIC 0
292	#endif	359	#endif
…		…
320		387
321	#if EV_SELECT_IS_WINSOCKET	388	#if EV_SELECT_IS_WINSOCKET
322	# include <winsock.h>	389	# include <winsock.h>
323	#endif	390	#endif
324		391
325	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326	/* which makes programs even slower. might work on other unices, too. */
327	#if EV_USE_CLOCK_SYSCALL
328	# include <syscall.h>
329	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330	# undef EV_USE_MONOTONIC
331	# define EV_USE_MONOTONIC 1
332	#endif
333
334	#if EV_USE_EVENTFD	392	#if EV_USE_EVENTFD
335	/* 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 */
336	# 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
337	# ifdef __cplusplus	405	# ifdef __cplusplus
338	extern "C" {	406	extern "C" {
339	# endif	407	# endif
340	int eventfd (unsigned int initval, int flags);	408	int eventfd (unsigned int initval, int flags);
341	# ifdef __cplusplus	409	# ifdef __cplusplus
342	}	410	}
343	# endif	411	# endif
344	#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
345		442
346	/**/	443	/**/
347		444
348	#if EV_VERIFY >= 3	445	#if EV_VERIFY >= 3
349	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	446	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
…		…
361	*/	458	*/
362	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	459	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
363		460
364	#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) */
365	#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) */
366	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds, TODO */
367		463
368	#if __GNUC__ >= 4	464	#if __GNUC__ >= 4
369	# define expect(expr,value) __builtin_expect ((expr),(value))	465	# define expect(expr,value) __builtin_expect ((expr),(value))
370	# define noinline __attribute__ ((noinline))	466	# define noinline __attribute__ ((noinline))
371	#else	467	#else
…		…
384	# define inline_speed static noinline	480	# define inline_speed static noinline
385	#else	481	#else
386	# define inline_speed static inline	482	# define inline_speed static inline
387	#endif	483	#endif
388		484
389	#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
390	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	490	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		491	#endif
391		492
392	#define EMPTY /* required for microsofts broken pseudo-c compiler */	493	#define EMPTY /* required for microsofts broken pseudo-c compiler */
393	#define EMPTY2(a,b) /* used to suppress some warnings */	494	#define EMPTY2(a,b) /* used to suppress some warnings */
394		495
395	typedef ev_watcher *W;	496	typedef ev_watcher *W;
…		…
407		508
408	#if EV_USE_MONOTONIC	509	#if EV_USE_MONOTONIC
409	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? */
410	#endif	511	#endif
411		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
412	#ifdef _WIN32	523	#ifdef _WIN32
413	# include "ev_win32.c"	524	# include "ev_win32.c"
414	#endif	525	#endif
415		526
416	/*****************************************************************************/	527	/*****************************************************************************/
…		…
478	#define ev_malloc(size) ev_realloc (0, (size))	589	#define ev_malloc(size) ev_realloc (0, (size))
479	#define ev_free(ptr) ev_realloc ((ptr), 0)	590	#define ev_free(ptr) ev_realloc ((ptr), 0)
480		591
481	/*****************************************************************************/	592	/*****************************************************************************/
482		593
		594	/* set in reify when reification needed */
		595	#define EV_ANFD_REIFY 1
		596
483	/* file descriptor info structure */	597	/* file descriptor info structure */
484	typedef struct	598	typedef struct
485	{	599	{
486	WL head;	600	WL head;
487	unsigned char events; /* the events watched for */	601	unsigned char events; /* the events watched for */
488	unsigned char reify; /* flag set when this ANFD needs reification */	602	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
489	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */	603	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
490	unsigned char unused;	604	unsigned char unused;
491	#if EV_USE_EPOLL	605	#if EV_USE_EPOLL
492	unsigned int egen; /* generation counter to counter epoll bugs */	606	unsigned int egen; /* generation counter to counter epoll bugs */
493	#endif	607	#endif
…		…
555		669
556	static int ev_default_loop_ptr;	670	static int ev_default_loop_ptr;
557		671
558	#endif	672	#endif
559		673
		674	#if EV_MINIMAL < 2
		675	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		676	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		677	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		678	#else
		679	# define EV_RELEASE_CB (void)0
		680	# define EV_ACQUIRE_CB (void)0
		681	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		682	#endif
		683
		684	#define EVUNLOOP_RECURSE 0x80
		685
560	/*****************************************************************************/	686	/*****************************************************************************/
561		687
		688	#ifndef EV_HAVE_EV_TIME
562	ev_tstamp	689	ev_tstamp
563	ev_time (void)	690	ev_time (void)
564	{	691	{
565	#if EV_USE_REALTIME	692	#if EV_USE_REALTIME
566	if (expect_true (have_realtime))	693	if (expect_true (have_realtime))
…		…
573		700
574	struct timeval tv;	701	struct timeval tv;
575	gettimeofday (&tv, 0);	702	gettimeofday (&tv, 0);
576	return tv.tv_sec + tv.tv_usec * 1e-6;	703	return tv.tv_sec + tv.tv_usec * 1e-6;
577	}	704	}
		705	#endif
578		706
579	inline_size ev_tstamp	707	inline_size ev_tstamp
580	get_clock (void)	708	get_clock (void)
581	{	709	{
582	#if EV_USE_MONOTONIC	710	#if EV_USE_MONOTONIC
…		…
618		746
619	tv.tv_sec = (time_t)delay;	747	tv.tv_sec = (time_t)delay;
620	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	748	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
621		749
622	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	750	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
623	/* somehting nto guaranteed by newer posix versions, but guaranteed */	751	/* something not guaranteed by newer posix versions, but guaranteed */
624	/* by older ones */	752	/* by older ones */
625	select (0, 0, 0, 0, &tv);	753	select (0, 0, 0, 0, &tv);
626	#endif	754	#endif
627	}	755	}
628	}	756	}
…		…
736	}	864	}
737		865
738	/*****************************************************************************/	866	/*****************************************************************************/
739		867
740	inline_speed void	868	inline_speed void
741	fd_event (EV_P_ int fd, int revents)	869	fd_event_nc (EV_P_ int fd, int revents)
742	{	870	{
743	ANFD *anfd = anfds + fd;	871	ANFD *anfd = anfds + fd;
744	ev_io *w;	872	ev_io *w;
745		873
746	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	874	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
…		…
750	if (ev)	878	if (ev)
751	ev_feed_event (EV_A_ (W)w, ev);	879	ev_feed_event (EV_A_ (W)w, ev);
752	}	880	}
753	}	881	}
754		882
		883	/* do not submit kernel events for fds that have reify set */
		884	/* because that means they changed while we were polling for new events */
		885	inline_speed void
		886	fd_event (EV_P_ int fd, int revents)
		887	{
		888	ANFD *anfd = anfds + fd;
		889
		890	if (expect_true (!anfd->reify))
		891	fd_event_nc (EV_A_ fd, revents);
		892	}
		893
755	void	894	void
756	ev_feed_fd_event (EV_P_ int fd, int revents)	895	ev_feed_fd_event (EV_P_ int fd, int revents)
757	{	896	{
758	if (fd >= 0 && fd < anfdmax)	897	if (fd >= 0 && fd < anfdmax)
759	fd_event (EV_A_ fd, revents);	898	fd_event_nc (EV_A_ fd, revents);
760	}	899	}
761		900
762	/* make sure the external fd watch events are in-sync */	901	/* make sure the external fd watch events are in-sync */
763	/* with the kernel/libev internal state */	902	/* with the kernel/libev internal state */
764	inline_size void	903	inline_size void
…		…
779		918
780	#if EV_SELECT_IS_WINSOCKET	919	#if EV_SELECT_IS_WINSOCKET
781	if (events)	920	if (events)
782	{	921	{
783	unsigned long arg;	922	unsigned long arg;
784	#ifdef EV_FD_TO_WIN32_HANDLE
785	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	923	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
786	#else
787	anfd->handle = _get_osfhandle (fd);
788	#endif
789	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	924	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
790	}	925	}
791	#endif	926	#endif
792		927
793	{	928	{
…		…
836	/* check whether the given fd is atcually valid, for error recovery */	971	/* check whether the given fd is atcually valid, for error recovery */
837	inline_size int	972	inline_size int
838	fd_valid (int fd)	973	fd_valid (int fd)
839	{	974	{
840	#ifdef _WIN32	975	#ifdef _WIN32
841	return _get_osfhandle (fd) != -1;	976	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
842	#else	977	#else
843	return fcntl (fd, F_GETFD) != -1;	978	return fcntl (fd, F_GETFD) != -1;
844	#endif	979	#endif
845	}	980	}
846		981
…		…
864		999
865	for (fd = anfdmax; fd--; )	1000	for (fd = anfdmax; fd--; )
866	if (anfds [fd].events)	1001	if (anfds [fd].events)
867	{	1002	{
868	fd_kill (EV_A_ fd);	1003	fd_kill (EV_A_ fd);
869	return;	1004	break;
870	}	1005	}
871	}	1006	}
872		1007
873	/* usually called after fork if backend needs to re-arm all fds from scratch */	1008	/* usually called after fork if backend needs to re-arm all fds from scratch */
874	static void noinline	1009	static void noinline
…		…
879	for (fd = 0; fd < anfdmax; ++fd)	1014	for (fd = 0; fd < anfdmax; ++fd)
880	if (anfds [fd].events)	1015	if (anfds [fd].events)
881	{	1016	{
882	anfds [fd].events = 0;	1017	anfds [fd].events = 0;
883	anfds [fd].emask = 0;	1018	anfds [fd].emask = 0;
884	fd_change (EV_A_ fd, EV__IOFDSET \| 1);	1019	fd_change (EV_A_ fd, EV__IOFDSET \| EV_ANFD_REIFY);
885	}	1020	}
886	}	1021	}
887		1022
888	/*****************************************************************************/	1023	/*****************************************************************************/
889		1024
…		…
964		1099
965	for (;;)	1100	for (;;)
966	{	1101	{
967	int c = k << 1;	1102	int c = k << 1;
968		1103
969	if (c > N + HEAP0 - 1)	1104	if (c >= N + HEAP0)
970	break;	1105	break;
971		1106
972	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1107	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
973	? 1 : 0;	1108	? 1 : 0;
974		1109
…		…
1010		1145
1011	/* move an element suitably so it is in a correct place */	1146	/* move an element suitably so it is in a correct place */
1012	inline_size void	1147	inline_size void
1013	adjustheap (ANHE *heap, int N, int k)	1148	adjustheap (ANHE *heap, int N, int k)
1014	{	1149	{
1015	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1150	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1016	upheap (heap, k);	1151	upheap (heap, k);
1017	else	1152	else
1018	downheap (heap, N, k);	1153	downheap (heap, N, k);
1019	}	1154	}
1020		1155
…		…
1033	/*****************************************************************************/	1168	/*****************************************************************************/
1034		1169
1035	/* associate signal watchers to a signal signal */	1170	/* associate signal watchers to a signal signal */
1036	typedef struct	1171	typedef struct
1037	{	1172	{
		1173	EV_ATOMIC_T pending;
		1174	#if EV_MULTIPLICITY
		1175	EV_P;
		1176	#endif
1038	WL head;	1177	WL head;
1039	EV_ATOMIC_T gotsig;
1040	} ANSIG;	1178	} ANSIG;
1041		1179
1042	static ANSIG *signals;	1180	static ANSIG signals [EV_NSIG - 1];
1043	static int signalmax;
1044
1045	static EV_ATOMIC_T gotsig;
1046		1181
1047	/*****************************************************************************/	1182	/*****************************************************************************/
1048		1183
1049	/* used to prepare libev internal fd's */	1184	/* used to prepare libev internal fd's */
1050	/* this is not fork-safe */	1185	/* this is not fork-safe */
1051	inline_speed void	1186	inline_speed void
1052	fd_intern (int fd)	1187	fd_intern (int fd)
1053	{	1188	{
1054	#ifdef _WIN32	1189	#ifdef _WIN32
1055	unsigned long arg = 1;	1190	unsigned long arg = 1;
1056	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1191	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1057	#else	1192	#else
1058	fcntl (fd, F_SETFD, FD_CLOEXEC);	1193	fcntl (fd, F_SETFD, FD_CLOEXEC);
1059	fcntl (fd, F_SETFL, O_NONBLOCK);	1194	fcntl (fd, F_SETFL, O_NONBLOCK);
1060	#endif	1195	#endif
1061	}	1196	}
…		…
1064	evpipe_init (EV_P)	1199	evpipe_init (EV_P)
1065	{	1200	{
1066	if (!ev_is_active (&pipe_w))	1201	if (!ev_is_active (&pipe_w))
1067	{	1202	{
1068	#if EV_USE_EVENTFD	1203	#if EV_USE_EVENTFD
		1204	evfd = eventfd (0, EFD_NONBLOCK \| EFD_CLOEXEC);
		1205	if (evfd < 0 && errno == EINVAL)
1069	if ((evfd = eventfd (0, 0)) >= 0)	1206	evfd = eventfd (0, 0);
		1207
		1208	if (evfd >= 0)
1070	{	1209	{
1071	evpipe [0] = -1;	1210	evpipe [0] = -1;
1072	fd_intern (evfd);	1211	fd_intern (evfd); /* doing it twice doesn't hurt */
1073	ev_io_set (&pipe_w, evfd, EV_READ);	1212	ev_io_set (&pipe_w, evfd, EV_READ);
1074	}	1213	}
1075	else	1214	else
1076	#endif	1215	#endif
1077	{	1216	{
…		…
1114	/* called whenever the libev signal pipe */	1253	/* called whenever the libev signal pipe */
1115	/* got some events (signal, async) */	1254	/* got some events (signal, async) */
1116	static void	1255	static void
1117	pipecb (EV_P_ ev_io *iow, int revents)	1256	pipecb (EV_P_ ev_io *iow, int revents)
1118	{	1257	{
		1258	int i;
		1259
1119	#if EV_USE_EVENTFD	1260	#if EV_USE_EVENTFD
1120	if (evfd >= 0)	1261	if (evfd >= 0)
1121	{	1262	{
1122	uint64_t counter;	1263	uint64_t counter;
1123	read (evfd, &counter, sizeof (uint64_t));	1264	read (evfd, &counter, sizeof (uint64_t));
…		…
1127	{	1268	{
1128	char dummy;	1269	char dummy;
1129	read (evpipe [0], &dummy, 1);	1270	read (evpipe [0], &dummy, 1);
1130	}	1271	}
1131		1272
1132	if (gotsig && ev_is_default_loop (EV_A))	1273	if (sig_pending)
1133	{	1274	{
1134	int signum;	1275	sig_pending = 0;
1135	gotsig = 0;
1136		1276
1137	for (signum = signalmax; signum--; )	1277	for (i = EV_NSIG - 1; i--; )
1138	if (signals [signum].gotsig)	1278	if (expect_false (signals [i].pending))
1139	ev_feed_signal_event (EV_A_ signum + 1);	1279	ev_feed_signal_event (EV_A_ i + 1);
1140	}	1280	}
1141		1281
1142	#if EV_ASYNC_ENABLE	1282	#if EV_ASYNC_ENABLE
1143	if (gotasync)	1283	if (async_pending)
1144	{	1284	{
1145	int i;	1285	async_pending = 0;
1146	gotasync = 0;
1147		1286
1148	for (i = asynccnt; i--; )	1287	for (i = asynccnt; i--; )
1149	if (asyncs [i]->sent)	1288	if (asyncs [i]->sent)
1150	{	1289	{
1151	asyncs [i]->sent = 0;	1290	asyncs [i]->sent = 0;
…		…
1159		1298
1160	static void	1299	static void
1161	ev_sighandler (int signum)	1300	ev_sighandler (int signum)
1162	{	1301	{
1163	#if EV_MULTIPLICITY	1302	#if EV_MULTIPLICITY
1164	struct ev_loop *loop = &default_loop_struct;	1303	EV_P = signals [signum - 1].loop;
1165	#endif	1304	#endif
1166		1305
1167	#if _WIN32	1306	#ifdef _WIN32
1168	signal (signum, ev_sighandler);	1307	signal (signum, ev_sighandler);
1169	#endif	1308	#endif
1170		1309
1171	signals [signum - 1].gotsig = 1;	1310	signals [signum - 1].pending = 1;
1172	evpipe_write (EV_A_ &gotsig);	1311	evpipe_write (EV_A_ &sig_pending);
1173	}	1312	}
1174		1313
1175	void noinline	1314	void noinline
1176	ev_feed_signal_event (EV_P_ int signum)	1315	ev_feed_signal_event (EV_P_ int signum)
1177	{	1316	{
1178	WL w;	1317	WL w;
1179		1318
		1319	if (expect_false (signum <= 0 \|\| signum > EV_NSIG))
		1320	return;
		1321
		1322	--signum;
		1323
1180	#if EV_MULTIPLICITY	1324	#if EV_MULTIPLICITY
1181	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1325	/* it is permissible to try to feed a signal to the wrong loop */
1182	#endif	1326	/* or, likely more useful, feeding a signal nobody is waiting for */
1183		1327
1184	--signum;	1328	if (expect_false (signals [signum].loop != EV_A))
1185
1186	if (signum < 0 \|\| signum >= signalmax)
1187	return;	1329	return;
		1330	#endif
1188		1331
1189	signals [signum].gotsig = 0;	1332	signals [signum].pending = 0;
1190		1333
1191	for (w = signals [signum].head; w; w = w->next)	1334	for (w = signals [signum].head; w; w = w->next)
1192	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1335	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1193	}	1336	}
		1337
		1338	#if EV_USE_SIGNALFD
		1339	static void
		1340	sigfdcb (EV_P_ ev_io *iow, int revents)
		1341	{
		1342	struct signalfd_siginfo si[2], sip; / these structs are big */
		1343
		1344	for (;;)
		1345	{
		1346	ssize_t res = read (sigfd, si, sizeof (si));
		1347
		1348	/* not ISO-C, as res might be -1, but works with SuS */
		1349	for (sip = si; (char )sip < (char )si + res; ++sip)
		1350	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1351
		1352	if (res < (ssize_t)sizeof (si))
		1353	break;
		1354	}
		1355	}
		1356	#endif
1194		1357
1195	/*****************************************************************************/	1358	/*****************************************************************************/
1196		1359
1197	static WL childs [EV_PID_HASHSIZE];	1360	static WL childs [EV_PID_HASHSIZE];
1198		1361
…		…
1343	ev_backend (EV_P)	1506	ev_backend (EV_P)
1344	{	1507	{
1345	return backend;	1508	return backend;
1346	}	1509	}
1347		1510
		1511	#if EV_MINIMAL < 2
1348	unsigned int	1512	unsigned int
1349	ev_loop_count (EV_P)	1513	ev_loop_count (EV_P)
1350	{	1514	{
1351	return loop_count;	1515	return loop_count;
1352	}	1516	}
1353		1517
		1518	unsigned int
		1519	ev_loop_depth (EV_P)
		1520	{
		1521	return loop_depth;
		1522	}
		1523
1354	void	1524	void
1355	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1525	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1356	{	1526	{
1357	io_blocktime = interval;	1527	io_blocktime = interval;
1358	}	1528	}
…		…
1360	void	1530	void
1361	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1531	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1362	{	1532	{
1363	timeout_blocktime = interval;	1533	timeout_blocktime = interval;
1364	}	1534	}
		1535
		1536	void
		1537	ev_set_userdata (EV_P_ void *data)
		1538	{
		1539	userdata = data;
		1540	}
		1541
		1542	void *
		1543	ev_userdata (EV_P)
		1544	{
		1545	return userdata;
		1546	}
		1547
		1548	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1549	{
		1550	invoke_cb = invoke_pending_cb;
		1551	}
		1552
		1553	void ev_set_loop_release_cb (EV_P_ void (release)(EV_P), void (acquire)(EV_P))
		1554	{
		1555	release_cb = release;
		1556	acquire_cb = acquire;
		1557	}
		1558	#endif
1365		1559
1366	/* initialise a loop structure, must be zero-initialised */	1560	/* initialise a loop structure, must be zero-initialised */
1367	static void noinline	1561	static void noinline
1368	loop_init (EV_P_ unsigned int flags)	1562	loop_init (EV_P_ unsigned int flags)
1369	{	1563	{
…		…
1387	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1581	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1388	have_monotonic = 1;	1582	have_monotonic = 1;
1389	}	1583	}
1390	#endif	1584	#endif
1391		1585
		1586	/* pid check not overridable via env */
		1587	#ifndef _WIN32
		1588	if (flags & EVFLAG_FORKCHECK)
		1589	curpid = getpid ();
		1590	#endif
		1591
		1592	if (!(flags & EVFLAG_NOENV)
		1593	&& !enable_secure ()
		1594	&& getenv ("LIBEV_FLAGS"))
		1595	flags = atoi (getenv ("LIBEV_FLAGS"));
		1596
1392	ev_rt_now = ev_time ();	1597	ev_rt_now = ev_time ();
1393	mn_now = get_clock ();	1598	mn_now = get_clock ();
1394	now_floor = mn_now;	1599	now_floor = mn_now;
1395	rtmn_diff = ev_rt_now - mn_now;	1600	rtmn_diff = ev_rt_now - mn_now;
		1601	#if EV_MINIMAL < 2
		1602	invoke_cb = ev_invoke_pending;
		1603	#endif
1396		1604
1397	io_blocktime = 0.;	1605	io_blocktime = 0.;
1398	timeout_blocktime = 0.;	1606	timeout_blocktime = 0.;
1399	backend = 0;	1607	backend = 0;
1400	backend_fd = -1;	1608	backend_fd = -1;
1401	gotasync = 0;	1609	sig_pending = 0;
		1610	#if EV_ASYNC_ENABLE
		1611	async_pending = 0;
		1612	#endif
1402	#if EV_USE_INOTIFY	1613	#if EV_USE_INOTIFY
1403	fs_fd = -2;	1614	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1404	#endif	1615	#endif
1405		1616	#if EV_USE_SIGNALFD
1406	/* pid check not overridable via env */	1617	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1407	#ifndef _WIN32
1408	if (flags & EVFLAG_FORKCHECK)
1409	curpid = getpid ();
1410	#endif	1618	#endif
1411
1412	if (!(flags & EVFLAG_NOENV)
1413	&& !enable_secure ()
1414	&& getenv ("LIBEV_FLAGS"))
1415	flags = atoi (getenv ("LIBEV_FLAGS"));
1416		1619
1417	if (!(flags & 0x0000ffffU))	1620	if (!(flags & 0x0000ffffU))
1418	flags \|= ev_recommended_backends ();	1621	flags \|= ev_recommended_backends ();
1419		1622
1420	#if EV_USE_PORT	1623	#if EV_USE_PORT
…		…
1446	{	1649	{
1447	int i;	1650	int i;
1448		1651
1449	if (ev_is_active (&pipe_w))	1652	if (ev_is_active (&pipe_w))
1450	{	1653	{
1451	ev_ref (EV_A); /* signal watcher */	1654	/ev_ref (EV_A);/
1452	ev_io_stop (EV_A_ &pipe_w);	1655	/ev_io_stop (EV_A_ &pipe_w);/
1453		1656
1454	#if EV_USE_EVENTFD	1657	#if EV_USE_EVENTFD
1455	if (evfd >= 0)	1658	if (evfd >= 0)
1456	close (evfd);	1659	close (evfd);
1457	#endif	1660	#endif
1458		1661
1459	if (evpipe [0] >= 0)	1662	if (evpipe [0] >= 0)
1460	{	1663	{
1461	close (evpipe [0]);	1664	EV_WIN32_CLOSE_FD (evpipe [0]);
1462	close (evpipe [1]);	1665	EV_WIN32_CLOSE_FD (evpipe [1]);
1463	}	1666	}
1464	}	1667	}
		1668
		1669	#if EV_USE_SIGNALFD
		1670	if (ev_is_active (&sigfd_w))
		1671	close (sigfd);
		1672	#endif
1465		1673
1466	#if EV_USE_INOTIFY	1674	#if EV_USE_INOTIFY
1467	if (fs_fd >= 0)	1675	if (fs_fd >= 0)
1468	close (fs_fd);	1676	close (fs_fd);
1469	#endif	1677	#endif
…		…
1493	#if EV_IDLE_ENABLE	1701	#if EV_IDLE_ENABLE
1494	array_free (idle, [i]);	1702	array_free (idle, [i]);
1495	#endif	1703	#endif
1496	}	1704	}
1497		1705
1498	ev_free (anfds); anfdmax = 0;	1706	ev_free (anfds); anfds = 0; anfdmax = 0;
1499		1707
1500	/* have to use the microsoft-never-gets-it-right macro */	1708	/* have to use the microsoft-never-gets-it-right macro */
1501	array_free (rfeed, EMPTY);	1709	array_free (rfeed, EMPTY);
1502	array_free (fdchange, EMPTY);	1710	array_free (fdchange, EMPTY);
1503	array_free (timer, EMPTY);	1711	array_free (timer, EMPTY);
…		…
1538		1746
1539	if (ev_is_active (&pipe_w))	1747	if (ev_is_active (&pipe_w))
1540	{	1748	{
1541	/* this "locks" the handlers against writing to the pipe */	1749	/* this "locks" the handlers against writing to the pipe */
1542	/* while we modify the fd vars */	1750	/* while we modify the fd vars */
1543	gotsig = 1;	1751	sig_pending = 1;
1544	#if EV_ASYNC_ENABLE	1752	#if EV_ASYNC_ENABLE
1545	gotasync = 1;	1753	async_pending = 1;
1546	#endif	1754	#endif
1547		1755
1548	ev_ref (EV_A);	1756	ev_ref (EV_A);
1549	ev_io_stop (EV_A_ &pipe_w);	1757	ev_io_stop (EV_A_ &pipe_w);
1550		1758
…		…
1553	close (evfd);	1761	close (evfd);
1554	#endif	1762	#endif
1555		1763
1556	if (evpipe [0] >= 0)	1764	if (evpipe [0] >= 0)
1557	{	1765	{
1558	close (evpipe [0]);	1766	EV_WIN32_CLOSE_FD (evpipe [0]);
1559	close (evpipe [1]);	1767	EV_WIN32_CLOSE_FD (evpipe [1]);
1560	}	1768	}
1561		1769
1562	evpipe_init (EV_A);	1770	evpipe_init (EV_A);
1563	/* now iterate over everything, in case we missed something */	1771	/* now iterate over everything, in case we missed something */
1564	pipecb (EV_A_ &pipe_w, EV_READ);	1772	pipecb (EV_A_ &pipe_w, EV_READ);
…		…
1570	#if EV_MULTIPLICITY	1778	#if EV_MULTIPLICITY
1571		1779
1572	struct ev_loop *	1780	struct ev_loop *
1573	ev_loop_new (unsigned int flags)	1781	ev_loop_new (unsigned int flags)
1574	{	1782	{
1575	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	1783	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1576		1784
1577	memset (loop, 0, sizeof (struct ev_loop));	1785	memset (EV_A, 0, sizeof (struct ev_loop));
1578
1579	loop_init (EV_A_ flags);	1786	loop_init (EV_A_ flags);
1580		1787
1581	if (ev_backend (EV_A))	1788	if (ev_backend (EV_A))
1582	return loop;	1789	return EV_A;
1583		1790
1584	return 0;	1791	return 0;
1585	}	1792	}
1586		1793
1587	void	1794	void
…		…
1594	void	1801	void
1595	ev_loop_fork (EV_P)	1802	ev_loop_fork (EV_P)
1596	{	1803	{
1597	postfork = 1; /* must be in line with ev_default_fork */	1804	postfork = 1; /* must be in line with ev_default_fork */
1598	}	1805	}
		1806	#endif /* multiplicity */
1599		1807
1600	#if EV_VERIFY	1808	#if EV_VERIFY
1601	static void noinline	1809	static void noinline
1602	verify_watcher (EV_P_ W w)	1810	verify_watcher (EV_P_ W w)
1603	{	1811	{
…		…
1631	verify_watcher (EV_A_ ws [cnt]);	1839	verify_watcher (EV_A_ ws [cnt]);
1632	}	1840	}
1633	}	1841	}
1634	#endif	1842	#endif
1635		1843
		1844	#if EV_MINIMAL < 2
1636	void	1845	void
1637	ev_loop_verify (EV_P)	1846	ev_loop_verify (EV_P)
1638	{	1847	{
1639	#if EV_VERIFY	1848	#if EV_VERIFY
1640	int i;	1849	int i;
…		…
1689	assert (checkmax >= checkcnt);	1898	assert (checkmax >= checkcnt);
1690	array_verify (EV_A_ (W *)checks, checkcnt);	1899	array_verify (EV_A_ (W *)checks, checkcnt);
1691		1900
1692	# if 0	1901	# if 0
1693	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	1902	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
1694	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1903	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1695	# endif
1696	#endif	1904	# endif
		1905	#endif
1697	}	1906	}
1698		1907	#endif
1699	#endif /* multiplicity */
1700		1908
1701	#if EV_MULTIPLICITY	1909	#if EV_MULTIPLICITY
1702	struct ev_loop *	1910	struct ev_loop *
1703	ev_default_loop_init (unsigned int flags)	1911	ev_default_loop_init (unsigned int flags)
1704	#else	1912	#else
…		…
1707	#endif	1915	#endif
1708	{	1916	{
1709	if (!ev_default_loop_ptr)	1917	if (!ev_default_loop_ptr)
1710	{	1918	{
1711	#if EV_MULTIPLICITY	1919	#if EV_MULTIPLICITY
1712	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1920	EV_P = ev_default_loop_ptr = &default_loop_struct;
1713	#else	1921	#else
1714	ev_default_loop_ptr = 1;	1922	ev_default_loop_ptr = 1;
1715	#endif	1923	#endif
1716		1924
1717	loop_init (EV_A_ flags);	1925	loop_init (EV_A_ flags);
…		…
1734		1942
1735	void	1943	void
1736	ev_default_destroy (void)	1944	ev_default_destroy (void)
1737	{	1945	{
1738	#if EV_MULTIPLICITY	1946	#if EV_MULTIPLICITY
1739	struct ev_loop *loop = ev_default_loop_ptr;	1947	EV_P = ev_default_loop_ptr;
1740	#endif	1948	#endif
1741		1949
1742	ev_default_loop_ptr = 0;	1950	ev_default_loop_ptr = 0;
1743		1951
1744	#ifndef _WIN32	1952	#ifndef _WIN32
…		…
1751		1959
1752	void	1960	void
1753	ev_default_fork (void)	1961	ev_default_fork (void)
1754	{	1962	{
1755	#if EV_MULTIPLICITY	1963	#if EV_MULTIPLICITY
1756	struct ev_loop *loop = ev_default_loop_ptr;	1964	EV_P = ev_default_loop_ptr;
1757	#endif	1965	#endif
1758		1966
1759	postfork = 1; /* must be in line with ev_loop_fork */	1967	postfork = 1; /* must be in line with ev_loop_fork */
1760	}	1968	}
1761		1969
…		…
1765	ev_invoke (EV_P_ void *w, int revents)	1973	ev_invoke (EV_P_ void *w, int revents)
1766	{	1974	{
1767	EV_CB_INVOKE ((W)w, revents);	1975	EV_CB_INVOKE ((W)w, revents);
1768	}	1976	}
1769		1977
1770	inline_speed void	1978	unsigned int
1771	call_pending (EV_P)	1979	ev_pending_count (EV_P)
		1980	{
		1981	int pri;
		1982	unsigned int count = 0;
		1983
		1984	for (pri = NUMPRI; pri--; )
		1985	count += pendingcnt [pri];
		1986
		1987	return count;
		1988	}
		1989
		1990	void noinline
		1991	ev_invoke_pending (EV_P)
1772	{	1992	{
1773	int pri;	1993	int pri;
1774		1994
1775	for (pri = NUMPRI; pri--; )	1995	for (pri = NUMPRI; pri--; )
1776	while (pendingcnt [pri])	1996	while (pendingcnt [pri])
…		…
1944	ANHE_at_cache (*he);	2164	ANHE_at_cache (*he);
1945	}	2165	}
1946	}	2166	}
1947		2167
1948	/* fetch new monotonic and realtime times from the kernel */	2168	/* fetch new monotonic and realtime times from the kernel */
1949	/* also detetc if there was a timejump, and act accordingly */	2169	/* also detect if there was a timejump, and act accordingly */
1950	inline_speed void	2170	inline_speed void
1951	time_update (EV_P_ ev_tstamp max_block)	2171	time_update (EV_P_ ev_tstamp max_block)
1952	{	2172	{
1953	#if EV_USE_MONOTONIC	2173	#if EV_USE_MONOTONIC
1954	if (expect_true (have_monotonic))	2174	if (expect_true (have_monotonic))
…		…
2011		2231
2012	mn_now = ev_rt_now;	2232	mn_now = ev_rt_now;
2013	}	2233	}
2014	}	2234	}
2015		2235
2016	static int loop_done;
2017
2018	void	2236	void
2019	ev_loop (EV_P_ int flags)	2237	ev_loop (EV_P_ int flags)
2020	{	2238	{
		2239	#if EV_MINIMAL < 2
		2240	++loop_depth;
		2241	#endif
		2242
		2243	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2244
2021	loop_done = EVUNLOOP_CANCEL;	2245	loop_done = EVUNLOOP_CANCEL;
2022		2246
2023	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2247	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2024		2248
2025	do	2249	do
2026	{	2250	{
2027	#if EV_VERIFY >= 2	2251	#if EV_VERIFY >= 2
2028	ev_loop_verify (EV_A);	2252	ev_loop_verify (EV_A);
…		…
2041	/* we might have forked, so queue fork handlers */	2265	/* we might have forked, so queue fork handlers */
2042	if (expect_false (postfork))	2266	if (expect_false (postfork))
2043	if (forkcnt)	2267	if (forkcnt)
2044	{	2268	{
2045	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2269	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2046	call_pending (EV_A);	2270	EV_INVOKE_PENDING;
2047	}	2271	}
2048	#endif	2272	#endif
2049		2273
2050	/* queue prepare watchers (and execute them) */	2274	/* queue prepare watchers (and execute them) */
2051	if (expect_false (preparecnt))	2275	if (expect_false (preparecnt))
2052	{	2276	{
2053	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2277	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2054	call_pending (EV_A);	2278	EV_INVOKE_PENDING;
2055	}	2279	}
		2280
		2281	if (expect_false (loop_done))
		2282	break;
2056		2283
2057	/* we might have forked, so reify kernel state if necessary */	2284	/* we might have forked, so reify kernel state if necessary */
2058	if (expect_false (postfork))	2285	if (expect_false (postfork))
2059	loop_fork (EV_A);	2286	loop_fork (EV_A);
2060		2287
…		…
2066	ev_tstamp waittime = 0.;	2293	ev_tstamp waittime = 0.;
2067	ev_tstamp sleeptime = 0.;	2294	ev_tstamp sleeptime = 0.;
2068		2295
2069	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))	2296	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
2070	{	2297	{
		2298	/* remember old timestamp for io_blocktime calculation */
		2299	ev_tstamp prev_mn_now = mn_now;
		2300
2071	/* update time to cancel out callback processing overhead */	2301	/* update time to cancel out callback processing overhead */
2072	time_update (EV_A_ 1e100);	2302	time_update (EV_A_ 1e100);
2073		2303
2074	waittime = MAX_BLOCKTIME;	2304	waittime = MAX_BLOCKTIME;
2075		2305
…		…
2085	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2315	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2086	if (waittime > to) waittime = to;	2316	if (waittime > to) waittime = to;
2087	}	2317	}
2088	#endif	2318	#endif
2089		2319
		2320	/* don't let timeouts decrease the waittime below timeout_blocktime */
2090	if (expect_false (waittime < timeout_blocktime))	2321	if (expect_false (waittime < timeout_blocktime))
2091	waittime = timeout_blocktime;	2322	waittime = timeout_blocktime;
2092		2323
2093	sleeptime = waittime - backend_fudge;	2324	/* extra check because io_blocktime is commonly 0 */
2094
2095	if (expect_true (sleeptime > io_blocktime))	2325	if (expect_false (io_blocktime))
2096	sleeptime = io_blocktime;
2097
2098	if (sleeptime)
2099	{	2326	{
		2327	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2328
		2329	if (sleeptime > waittime - backend_fudge)
		2330	sleeptime = waittime - backend_fudge;
		2331
		2332	if (expect_true (sleeptime > 0.))
		2333	{
2100	ev_sleep (sleeptime);	2334	ev_sleep (sleeptime);
2101	waittime -= sleeptime;	2335	waittime -= sleeptime;
		2336	}
2102	}	2337	}
2103	}	2338	}
2104		2339
		2340	#if EV_MINIMAL < 2
2105	++loop_count;	2341	++loop_count;
		2342	#endif
		2343	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2106	backend_poll (EV_A_ waittime);	2344	backend_poll (EV_A_ waittime);
		2345	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2107		2346
2108	/* update ev_rt_now, do magic */	2347	/* update ev_rt_now, do magic */
2109	time_update (EV_A_ waittime + sleeptime);	2348	time_update (EV_A_ waittime + sleeptime);
2110	}	2349	}
2111		2350
…		…
2122		2361
2123	/* queue check watchers, to be executed first */	2362	/* queue check watchers, to be executed first */
2124	if (expect_false (checkcnt))	2363	if (expect_false (checkcnt))
2125	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2364	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2126		2365
2127	call_pending (EV_A);	2366	EV_INVOKE_PENDING;
2128	}	2367	}
2129	while (expect_true (	2368	while (expect_true (
2130	activecnt	2369	activecnt
2131	&& !loop_done	2370	&& !loop_done
2132	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))	2371	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))
2133	));	2372	));
2134		2373
2135	if (loop_done == EVUNLOOP_ONE)	2374	if (loop_done == EVUNLOOP_ONE)
2136	loop_done = EVUNLOOP_CANCEL;	2375	loop_done = EVUNLOOP_CANCEL;
		2376
		2377	#if EV_MINIMAL < 2
		2378	--loop_depth;
		2379	#endif
2137	}	2380	}
2138		2381
2139	void	2382	void
2140	ev_unloop (EV_P_ int how)	2383	ev_unloop (EV_P_ int how)
2141	{	2384	{
…		…
2192	inline_size void	2435	inline_size void
2193	wlist_del (WL *head, WL elem)	2436	wlist_del (WL *head, WL elem)
2194	{	2437	{
2195	while (*head)	2438	while (*head)
2196	{	2439	{
2197	if (*head == elem)	2440	if (expect_true (*head == elem))
2198	{	2441	{
2199	*head = elem->next;	2442	*head = elem->next;
2200	return;	2443	break;
2201	}	2444	}
2202		2445
2203	head = &(*head)->next;	2446	head = &(*head)->next;
2204	}	2447	}
2205	}	2448	}
…		…
2233	}	2476	}
2234		2477
2235	inline_size void	2478	inline_size void
2236	pri_adjust (EV_P_ W w)	2479	pri_adjust (EV_P_ W w)
2237	{	2480	{
2238	int pri = w->priority;	2481	int pri = ev_priority (w);
2239	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2482	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2240	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2483	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2241	w->priority = pri;	2484	ev_set_priority (w, pri);
2242	}	2485	}
2243		2486
2244	inline_speed void	2487	inline_speed void
2245	ev_start (EV_P_ W w, int active)	2488	ev_start (EV_P_ W w, int active)
2246	{	2489	{
…		…
2265		2508
2266	if (expect_false (ev_is_active (w)))	2509	if (expect_false (ev_is_active (w)))
2267	return;	2510	return;
2268		2511
2269	assert (("libev: ev_io_start called with negative fd", fd >= 0));	2512	assert (("libev: ev_io_start called with negative fd", fd >= 0));
2270	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET \| EV_READ \| EV_WRITE))));	2513	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET \| EV_READ \| EV_WRITE))));
2271		2514
2272	EV_FREQUENT_CHECK;	2515	EV_FREQUENT_CHECK;
2273		2516
2274	ev_start (EV_A_ (W)w, 1);	2517	ev_start (EV_A_ (W)w, 1);
2275	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2518	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2276	wlist_add (&anfds[fd].head, (WL)w);	2519	wlist_add (&anfds[fd].head, (WL)w);
2277		2520
2278	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| 1);	2521	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| EV_ANFD_REIFY);
2279	w->events &= ~EV__IOFDSET;	2522	w->events &= ~EV__IOFDSET;
2280		2523
2281	EV_FREQUENT_CHECK;	2524	EV_FREQUENT_CHECK;
2282	}	2525	}
2283		2526
…		…
2377	}	2620	}
2378		2621
2379	EV_FREQUENT_CHECK;	2622	EV_FREQUENT_CHECK;
2380	}	2623	}
2381		2624
		2625	ev_tstamp
		2626	ev_timer_remaining (EV_P_ ev_timer *w)
		2627	{
		2628	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2629	}
		2630
2382	#if EV_PERIODIC_ENABLE	2631	#if EV_PERIODIC_ENABLE
2383	void noinline	2632	void noinline
2384	ev_periodic_start (EV_P_ ev_periodic *w)	2633	ev_periodic_start (EV_P_ ev_periodic *w)
2385	{	2634	{
2386	if (expect_false (ev_is_active (w)))	2635	if (expect_false (ev_is_active (w)))
…		…
2453	#endif	2702	#endif
2454		2703
2455	void noinline	2704	void noinline
2456	ev_signal_start (EV_P_ ev_signal *w)	2705	ev_signal_start (EV_P_ ev_signal *w)
2457	{	2706	{
2458	#if EV_MULTIPLICITY
2459	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2460	#endif
2461	if (expect_false (ev_is_active (w)))	2707	if (expect_false (ev_is_active (w)))
2462	return;	2708	return;
2463		2709
2464	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2710	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2465		2711
2466	evpipe_init (EV_A);	2712	#if EV_MULTIPLICITY
		2713	assert (("libev: a signal must not be attached to two different loops",
		2714	!signals [w->signum - 1].loop \|\| signals [w->signum - 1].loop == loop));
2467		2715
2468	EV_FREQUENT_CHECK;	2716	signals [w->signum - 1].loop = EV_A;
		2717	#endif
2469		2718
		2719	EV_FREQUENT_CHECK;
		2720
		2721	#if EV_USE_SIGNALFD
		2722	if (sigfd == -2)
2470	{	2723	{
2471	#ifndef _WIN32	2724	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK \| SFD_CLOEXEC);
2472	sigset_t full, prev;	2725	if (sigfd < 0 && errno == EINVAL)
2473	sigfillset (&full);	2726	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2474	sigprocmask (SIG_SETMASK, &full, &prev);
2475	#endif
2476		2727
2477	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);	2728	if (sigfd >= 0)
		2729	{
		2730	fd_intern (sigfd); /* doing it twice will not hurt */
2478		2731
2479	#ifndef _WIN32	2732	sigemptyset (&sigfd_set);
2480	sigprocmask (SIG_SETMASK, &prev, 0);	2733
2481	#endif	2734	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2735	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2736	ev_io_start (EV_A_ &sigfd_w);
		2737	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2738	}
2482	}	2739	}
		2740
		2741	if (sigfd >= 0)
		2742	{
		2743	/* TODO: check .head */
		2744	sigaddset (&sigfd_set, w->signum);
		2745	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2746
		2747	signalfd (sigfd, &sigfd_set, 0);
		2748	}
		2749	#endif
2483		2750
2484	ev_start (EV_A_ (W)w, 1);	2751	ev_start (EV_A_ (W)w, 1);
2485	wlist_add (&signals [w->signum - 1].head, (WL)w);	2752	wlist_add (&signals [w->signum - 1].head, (WL)w);
2486		2753
2487	if (!((WL)w)->next)	2754	if (!((WL)w)->next)
		2755	# if EV_USE_SIGNALFD
		2756	if (sigfd < 0) /TODO/
		2757	# endif
2488	{	2758	{
2489	#if _WIN32	2759	# ifdef _WIN32
		2760	evpipe_init (EV_A);
		2761
2490	signal (w->signum, ev_sighandler);	2762	signal (w->signum, ev_sighandler);
2491	#else	2763	# else
2492	struct sigaction sa;	2764	struct sigaction sa;
		2765
		2766	evpipe_init (EV_A);
		2767
2493	sa.sa_handler = ev_sighandler;	2768	sa.sa_handler = ev_sighandler;
2494	sigfillset (&sa.sa_mask);	2769	sigfillset (&sa.sa_mask);
2495	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2770	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2496	sigaction (w->signum, &sa, 0);	2771	sigaction (w->signum, &sa, 0);
		2772
		2773	sigemptyset (&sa.sa_mask);
		2774	sigaddset (&sa.sa_mask, w->signum);
		2775	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2497	#endif	2776	#endif
2498	}	2777	}
2499		2778
2500	EV_FREQUENT_CHECK;	2779	EV_FREQUENT_CHECK;
2501	}	2780	}
2502		2781
2503	void noinline	2782	void noinline
…		…
2511		2790
2512	wlist_del (&signals [w->signum - 1].head, (WL)w);	2791	wlist_del (&signals [w->signum - 1].head, (WL)w);
2513	ev_stop (EV_A_ (W)w);	2792	ev_stop (EV_A_ (W)w);
2514		2793
2515	if (!signals [w->signum - 1].head)	2794	if (!signals [w->signum - 1].head)
		2795	{
		2796	#if EV_MULTIPLICITY
		2797	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2798	#endif
		2799	#if EV_USE_SIGNALFD
		2800	if (sigfd >= 0)
		2801	{
		2802	sigset_t ss;
		2803
		2804	sigemptyset (&ss);
		2805	sigaddset (&ss, w->signum);
		2806	sigdelset (&sigfd_set, w->signum);
		2807
		2808	signalfd (sigfd, &sigfd_set, 0);
		2809	sigprocmask (SIG_UNBLOCK, &ss, 0);
		2810	}
		2811	else
		2812	#endif
2516	signal (w->signum, SIG_DFL);	2813	signal (w->signum, SIG_DFL);
		2814	}
2517		2815
2518	EV_FREQUENT_CHECK;	2816	EV_FREQUENT_CHECK;
2519	}	2817	}
2520		2818
2521	void	2819	void
…		…
2562	#define MIN_STAT_INTERVAL 0.1074891	2860	#define MIN_STAT_INTERVAL 0.1074891
2563		2861
2564	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2862	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2565		2863
2566	#if EV_USE_INOTIFY	2864	#if EV_USE_INOTIFY
2567	# define EV_INOTIFY_BUFSIZE 8192	2865
		2866	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		2867	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2568		2868
2569	static void noinline	2869	static void noinline
2570	infy_add (EV_P_ ev_stat *w)	2870	infy_add (EV_P_ ev_stat *w)
2571	{	2871	{
2572	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);	2872	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);
2573		2873
2574	if (w->wd < 0)	2874	if (w->wd >= 0)
		2875	{
		2876	struct statfs sfs;
		2877
		2878	/* now local changes will be tracked by inotify, but remote changes won't */
		2879	/* unless the filesystem is known to be local, we therefore still poll */
		2880	/* also do poll on <2.6.25, but with normal frequency */
		2881
		2882	if (!fs_2625)
		2883	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2884	else if (!statfs (w->path, &sfs)
		2885	&& (sfs.f_type == 0x1373 /* devfs */
		2886	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
		2887	\|\| sfs.f_type == 0x3153464a /* jfs */
		2888	\|\| sfs.f_type == 0x52654973 /* reiser3 */
		2889	\|\| sfs.f_type == 0x01021994 /* tempfs */
		2890	\|\| sfs.f_type == 0x58465342 /* xfs */))
		2891	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2892	else
		2893	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2575	{	2894	}
		2895	else
		2896	{
		2897	/* can't use inotify, continue to stat */
2576	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	2898	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2577	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2578		2899
2579	/* monitor some parent directory for speedup hints */	2900	/* if path is not there, monitor some parent directory for speedup hints */
2580	/* note that exceeding the hardcoded path limit is not a correctness issue, */	2901	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2581	/* but an efficiency issue only */	2902	/* but an efficiency issue only */
2582	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)	2903	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
2583	{	2904	{
2584	char path [4096];	2905	char path [4096];
…		…
2600	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	2921	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
2601	}	2922	}
2602	}	2923	}
2603		2924
2604	if (w->wd >= 0)	2925	if (w->wd >= 0)
2605	{
2606	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2926	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2607		2927
2608	/* now local changes will be tracked by inotify, but remote changes won't */	2928	/* now re-arm timer, if required */
2609	/* unless the filesystem it known to be local, we therefore still poll */	2929	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2610	/* also do poll on <2.6.25, but with normal frequency */
2611	struct statfs sfs;
2612
2613	if (fs_2625 && !statfs (w->path, &sfs))
2614	if (sfs.f_type == 0x1373 /* devfs */
2615	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
2616	\|\| sfs.f_type == 0x3153464a /* jfs */
2617	\|\| sfs.f_type == 0x52654973 /* reiser3 */
2618	\|\| sfs.f_type == 0x01021994 /* tempfs */
2619	\|\| sfs.f_type == 0x58465342 /* xfs */)
2620	return;
2621
2622	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2623	ev_timer_again (EV_A_ &w->timer);	2930	ev_timer_again (EV_A_ &w->timer);
2624	}	2931	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2625	}	2932	}
2626		2933
2627	static void noinline	2934	static void noinline
2628	infy_del (EV_P_ ev_stat *w)	2935	infy_del (EV_P_ ev_stat *w)
2629	{	2936	{
…		…
2674		2981
2675	static void	2982	static void
2676	infy_cb (EV_P_ ev_io *w, int revents)	2983	infy_cb (EV_P_ ev_io *w, int revents)
2677	{	2984	{
2678	char buf [EV_INOTIFY_BUFSIZE];	2985	char buf [EV_INOTIFY_BUFSIZE];
2679	struct inotify_event ev = (struct inotify_event )buf;
2680	int ofs;	2986	int ofs;
2681	int len = read (fs_fd, buf, sizeof (buf));	2987	int len = read (fs_fd, buf, sizeof (buf));
2682		2988
2683	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2989	for (ofs = 0; ofs < len; )
		2990	{
		2991	struct inotify_event ev = (struct inotify_event )(buf + ofs);
2684	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2992	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2993	ofs += sizeof (struct inotify_event) + ev->len;
		2994	}
2685	}	2995	}
2686		2996
2687	inline_size void	2997	inline_size void
2688	check_2625 (EV_P)	2998	check_2625 (EV_P)
2689	{	2999	{
…		…
2705	return;	3015	return;
2706		3016
2707	fs_2625 = 1;	3017	fs_2625 = 1;
2708	}	3018	}
2709		3019
		3020	inline_size int
		3021	infy_newfd (void)
		3022	{
		3023	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3024	int fd = inotify_init1 (IN_CLOEXEC \| IN_NONBLOCK);
		3025	if (fd >= 0)
		3026	return fd;
		3027	#endif
		3028	return inotify_init ();
		3029	}
		3030
2710	inline_size void	3031	inline_size void
2711	infy_init (EV_P)	3032	infy_init (EV_P)
2712	{	3033	{
2713	if (fs_fd != -2)	3034	if (fs_fd != -2)
2714	return;	3035	return;
2715		3036
2716	fs_fd = -1;	3037	fs_fd = -1;
2717		3038
2718	check_2625 (EV_A);	3039	check_2625 (EV_A);
2719		3040
2720	fs_fd = inotify_init ();	3041	fs_fd = infy_newfd ();
2721		3042
2722	if (fs_fd >= 0)	3043	if (fs_fd >= 0)
2723	{	3044	{
		3045	fd_intern (fs_fd);
2724	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3046	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2725	ev_set_priority (&fs_w, EV_MAXPRI);	3047	ev_set_priority (&fs_w, EV_MAXPRI);
2726	ev_io_start (EV_A_ &fs_w);	3048	ev_io_start (EV_A_ &fs_w);
		3049	ev_unref (EV_A);
2727	}	3050	}
2728	}	3051	}
2729		3052
2730	inline_size void	3053	inline_size void
2731	infy_fork (EV_P)	3054	infy_fork (EV_P)
…		…
2733	int slot;	3056	int slot;
2734		3057
2735	if (fs_fd < 0)	3058	if (fs_fd < 0)
2736	return;	3059	return;
2737		3060
		3061	ev_ref (EV_A);
		3062	ev_io_stop (EV_A_ &fs_w);
2738	close (fs_fd);	3063	close (fs_fd);
2739	fs_fd = inotify_init ();	3064	fs_fd = infy_newfd ();
		3065
		3066	if (fs_fd >= 0)
		3067	{
		3068	fd_intern (fs_fd);
		3069	ev_io_set (&fs_w, fs_fd, EV_READ);
		3070	ev_io_start (EV_A_ &fs_w);
		3071	ev_unref (EV_A);
		3072	}
2740		3073
2741	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3074	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2742	{	3075	{
2743	WL w_ = fs_hash [slot].head;	3076	WL w_ = fs_hash [slot].head;
2744	fs_hash [slot].head = 0;	3077	fs_hash [slot].head = 0;
…		…
2751	w->wd = -1;	3084	w->wd = -1;
2752		3085
2753	if (fs_fd >= 0)	3086	if (fs_fd >= 0)
2754	infy_add (EV_A_ w); /* re-add, no matter what */	3087	infy_add (EV_A_ w); /* re-add, no matter what */
2755	else	3088	else
		3089	{
		3090	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3091	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2756	ev_timer_again (EV_A_ &w->timer);	3092	ev_timer_again (EV_A_ &w->timer);
		3093	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3094	}
2757	}	3095	}
2758	}	3096	}
2759	}	3097	}
2760		3098
2761	#endif	3099	#endif
…		…
2778	static void noinline	3116	static void noinline
2779	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3117	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2780	{	3118	{
2781	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	3119	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
2782		3120
2783	/* we copy this here each the time so that */	3121	ev_statdata prev = w->attr;
2784	/* prev has the old value when the callback gets invoked */
2785	w->prev = w->attr;
2786	ev_stat_stat (EV_A_ w);	3122	ev_stat_stat (EV_A_ w);
2787		3123
2788	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3124	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2789	if (	3125	if (
2790	w->prev.st_dev != w->attr.st_dev	3126	prev.st_dev != w->attr.st_dev
2791	\|\| w->prev.st_ino != w->attr.st_ino	3127	\|\| prev.st_ino != w->attr.st_ino
2792	\|\| w->prev.st_mode != w->attr.st_mode	3128	\|\| prev.st_mode != w->attr.st_mode
2793	\|\| w->prev.st_nlink != w->attr.st_nlink	3129	\|\| prev.st_nlink != w->attr.st_nlink
2794	\|\| w->prev.st_uid != w->attr.st_uid	3130	\|\| prev.st_uid != w->attr.st_uid
2795	\|\| w->prev.st_gid != w->attr.st_gid	3131	\|\| prev.st_gid != w->attr.st_gid
2796	\|\| w->prev.st_rdev != w->attr.st_rdev	3132	\|\| prev.st_rdev != w->attr.st_rdev
2797	\|\| w->prev.st_size != w->attr.st_size	3133	\|\| prev.st_size != w->attr.st_size
2798	\|\| w->prev.st_atime != w->attr.st_atime	3134	\|\| prev.st_atime != w->attr.st_atime
2799	\|\| w->prev.st_mtime != w->attr.st_mtime	3135	\|\| prev.st_mtime != w->attr.st_mtime
2800	\|\| w->prev.st_ctime != w->attr.st_ctime	3136	\|\| prev.st_ctime != w->attr.st_ctime
2801	) {	3137	) {
		3138	/* we only update w->prev on actual differences */
		3139	/* in case we test more often than invoke the callback, */
		3140	/* to ensure that prev is always different to attr */
		3141	w->prev = prev;
		3142
2802	#if EV_USE_INOTIFY	3143	#if EV_USE_INOTIFY
2803	if (fs_fd >= 0)	3144	if (fs_fd >= 0)
2804	{	3145	{
2805	infy_del (EV_A_ w);	3146	infy_del (EV_A_ w);
2806	infy_add (EV_A_ w);	3147	infy_add (EV_A_ w);
…		…
2831		3172
2832	if (fs_fd >= 0)	3173	if (fs_fd >= 0)
2833	infy_add (EV_A_ w);	3174	infy_add (EV_A_ w);
2834	else	3175	else
2835	#endif	3176	#endif
		3177	{
2836	ev_timer_again (EV_A_ &w->timer);	3178	ev_timer_again (EV_A_ &w->timer);
		3179	ev_unref (EV_A);
		3180	}
2837		3181
2838	ev_start (EV_A_ (W)w, 1);	3182	ev_start (EV_A_ (W)w, 1);
2839		3183
2840	EV_FREQUENT_CHECK;	3184	EV_FREQUENT_CHECK;
2841	}	3185	}
…		…
2850	EV_FREQUENT_CHECK;	3194	EV_FREQUENT_CHECK;
2851		3195
2852	#if EV_USE_INOTIFY	3196	#if EV_USE_INOTIFY
2853	infy_del (EV_A_ w);	3197	infy_del (EV_A_ w);
2854	#endif	3198	#endif
		3199
		3200	if (ev_is_active (&w->timer))
		3201	{
		3202	ev_ref (EV_A);
2855	ev_timer_stop (EV_A_ &w->timer);	3203	ev_timer_stop (EV_A_ &w->timer);
		3204	}
2856		3205
2857	ev_stop (EV_A_ (W)w);	3206	ev_stop (EV_A_ (W)w);
2858		3207
2859	EV_FREQUENT_CHECK;	3208	EV_FREQUENT_CHECK;
2860	}	3209	}
…		…
3001	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3350	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3002	{	3351	{
3003	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));	3352	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
3004		3353
3005	{	3354	{
3006	struct ev_loop *loop = w->other;	3355	EV_P = w->other;
3007		3356
3008	while (fdchangecnt)	3357	while (fdchangecnt)
3009	{	3358	{
3010	fd_reify (EV_A);	3359	fd_reify (EV_A);
3011	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3360	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
3019	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));	3368	ev_embed w = (ev_embed )(((char *)fork_w) - offsetof (ev_embed, fork));
3020		3369
3021	ev_embed_stop (EV_A_ w);	3370	ev_embed_stop (EV_A_ w);
3022		3371
3023	{	3372	{
3024	struct ev_loop *loop = w->other;	3373	EV_P = w->other;
3025		3374
3026	ev_loop_fork (EV_A);	3375	ev_loop_fork (EV_A);
3027	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3376	ev_loop (EV_A_ EVLOOP_NONBLOCK);
3028	}	3377	}
3029		3378
…		…
3043	{	3392	{
3044	if (expect_false (ev_is_active (w)))	3393	if (expect_false (ev_is_active (w)))
3045	return;	3394	return;
3046		3395
3047	{	3396	{
3048	struct ev_loop *loop = w->other;	3397	EV_P = w->other;
3049	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3398	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3050	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3399	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3051	}	3400	}
3052		3401
3053	EV_FREQUENT_CHECK;	3402	EV_FREQUENT_CHECK;
…		…
3165		3514
3166	void	3515	void
3167	ev_async_send (EV_P_ ev_async *w)	3516	ev_async_send (EV_P_ ev_async *w)
3168	{	3517	{
3169	w->sent = 1;	3518	w->sent = 1;
3170	evpipe_write (EV_A_ &gotasync);	3519	evpipe_write (EV_A_ &async_pending);
3171	}	3520	}
3172	#endif	3521	#endif
3173		3522
3174	/*****************************************************************************/	3523	/*****************************************************************************/
3175		3524
…		…
3324	if (types & EV_CHECK)	3673	if (types & EV_CHECK)
3325	for (i = checkcnt; i--; )	3674	for (i = checkcnt; i--; )
3326	cb (EV_A_ EV_CHECK, checks [i]);	3675	cb (EV_A_ EV_CHECK, checks [i]);
3327		3676
3328	if (types & EV_SIGNAL)	3677	if (types & EV_SIGNAL)
3329	for (i = 0; i < signalmax; ++i)	3678	for (i = 0; i < EV_NSIG - 1; ++i)
3330	for (wl = signals [i].head; wl; )	3679	for (wl = signals [i].head; wl; )
3331	{	3680	{
3332	wn = wl->next;	3681	wn = wl->next;
3333	cb (EV_A_ EV_SIGNAL, wl);	3682	cb (EV_A_ EV_SIGNAL, wl);
3334	wl = wn;	3683	wl = wn;

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+Removed lines
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Comparing libev/ev.c (file contents): Revision 1.289 by root, Sat Jun 6 11:13:16 2009 UTC vs. Revision 1.327 by root, Sun Feb 14 19:09:04 2010 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.289 by root, Sat Jun 6 11:13:16 2009 UTC vs.
Revision 1.327 by root, Sun Feb 14 19:09:04 2010 UTC