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Comparing libev/ev.c (file contents):
Revision 1.284 by root, Wed Apr 15 17:49:26 2009 UTC vs.
Revision 1.332 by root, Tue Mar 9 08:58:17 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	*
…		…
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
…		…
172	# define WIN32_LEAN_AND_MEAN	184	# define WIN32_LEAN_AND_MEAN
173	# include <windows.h>	185	# include <windows.h>
174	# ifndef EV_SELECT_IS_WINSOCKET	186	# ifndef EV_SELECT_IS_WINSOCKET
175	# define EV_SELECT_IS_WINSOCKET 1	187	# define EV_SELECT_IS_WINSOCKET 1
176	# endif	188	# endif
		189	# undef EV_AVOID_STDIO
177	#endif	190	#endif
178		191
179	/* this block tries to deduce configuration from header-defined symbols and defaults */	192	/* this block tries to deduce configuration from header-defined symbols and defaults */
		193
		194	/* try to deduce the maximum number of signals on this platform */
		195	#if defined (EV_NSIG)
		196	/* use what's provided */
		197	#elif defined (NSIG)
		198	# define EV_NSIG (NSIG)
		199	#elif defined(_NSIG)
		200	# define EV_NSIG (_NSIG)
		201	#elif defined (SIGMAX)
		202	# define EV_NSIG (SIGMAX+1)
		203	#elif defined (SIG_MAX)
		204	# define EV_NSIG (SIG_MAX+1)
		205	#elif defined (_SIG_MAX)
		206	# define EV_NSIG (_SIG_MAX+1)
		207	#elif defined (MAXSIG)
		208	# define EV_NSIG (MAXSIG+1)
		209	#elif defined (MAX_SIG)
		210	# define EV_NSIG (MAX_SIG+1)
		211	#elif defined (SIGARRAYSIZE)
		212	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		213	#elif defined (_sys_nsig)
		214	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		215	#else
		216	# error "unable to find value for NSIG, please report"
		217	/* to make it compile regardless, just remove the above line */
		218	# define EV_NSIG 65
		219	#endif
180		220
181	#ifndef EV_USE_CLOCK_SYSCALL	221	#ifndef EV_USE_CLOCK_SYSCALL
182	# if __linux && __GLIBC__ >= 2	222	# if __linux && __GLIBC__ >= 2
183	# define EV_USE_CLOCK_SYSCALL 1	223	# define EV_USE_CLOCK_SYSCALL 1
184	# else	224	# else
…		…
264	# else	304	# else
265	# define EV_USE_EVENTFD 0	305	# define EV_USE_EVENTFD 0
266	# endif	306	# endif
267	#endif	307	#endif
268		308
		309	#ifndef EV_USE_SIGNALFD
		310	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		311	# define EV_USE_SIGNALFD 1
		312	# else
		313	# define EV_USE_SIGNALFD 0
		314	# endif
		315	#endif
		316
269	#if 0 /* debugging */	317	#if 0 /* debugging */
270	# define EV_VERIFY 3	318	# define EV_VERIFY 3
271	# define EV_USE_4HEAP 1	319	# define EV_USE_4HEAP 1
272	# define EV_HEAP_CACHE_AT 1	320	# define EV_HEAP_CACHE_AT 1
273	#endif	321	#endif
…		…
282		330
283	#ifndef EV_HEAP_CACHE_AT	331	#ifndef EV_HEAP_CACHE_AT
284	# define EV_HEAP_CACHE_AT !EV_MINIMAL	332	# define EV_HEAP_CACHE_AT !EV_MINIMAL
285	#endif	333	#endif
286		334
		335	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		336	/* which makes programs even slower. might work on other unices, too. */
		337	#if EV_USE_CLOCK_SYSCALL
		338	# include <syscall.h>
		339	# ifdef SYS_clock_gettime
		340	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		341	# undef EV_USE_MONOTONIC
		342	# define EV_USE_MONOTONIC 1
		343	# else
		344	# undef EV_USE_CLOCK_SYSCALL
		345	# define EV_USE_CLOCK_SYSCALL 0
		346	# endif
		347	#endif
		348
287	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	349	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
		350
		351	#ifdef _AIX
		352	/* AIX has a completely broken poll.h header */
		353	# undef EV_USE_POLL
		354	# define EV_USE_POLL 0
		355	#endif
288		356
289	#ifndef CLOCK_MONOTONIC	357	#ifndef CLOCK_MONOTONIC
290	# undef EV_USE_MONOTONIC	358	# undef EV_USE_MONOTONIC
291	# define EV_USE_MONOTONIC 0	359	# define EV_USE_MONOTONIC 0
292	#endif	360	#endif
…		…
320		388
321	#if EV_SELECT_IS_WINSOCKET	389	#if EV_SELECT_IS_WINSOCKET
322	# include <winsock.h>	390	# include <winsock.h>
323	#endif	391	#endif
324		392
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	393	#if EV_USE_EVENTFD
335	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	394	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336	# include <stdint.h>	395	# include <stdint.h>
		396	# ifndef EFD_NONBLOCK
		397	# define EFD_NONBLOCK O_NONBLOCK
		398	# endif
		399	# ifndef EFD_CLOEXEC
		400	# ifdef O_CLOEXEC
		401	# define EFD_CLOEXEC O_CLOEXEC
		402	# else
		403	# define EFD_CLOEXEC 02000000
		404	# endif
		405	# endif
337	# ifdef __cplusplus	406	# ifdef __cplusplus
338	extern "C" {	407	extern "C" {
339	# endif	408	# endif
340	int eventfd (unsigned int initval, int flags);	409	int (eventfd) (unsigned int initval, int flags);
341	# ifdef __cplusplus	410	# ifdef __cplusplus
342	}	411	}
343	# endif	412	# endif
344	#endif	413	#endif
		414
		415	#if EV_USE_SIGNALFD
		416	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		417	# include <stdint.h>
		418	# ifndef SFD_NONBLOCK
		419	# define SFD_NONBLOCK O_NONBLOCK
		420	# endif
		421	# ifndef SFD_CLOEXEC
		422	# ifdef O_CLOEXEC
		423	# define SFD_CLOEXEC O_CLOEXEC
		424	# else
		425	# define SFD_CLOEXEC 02000000
		426	# endif
		427	# endif
		428	# ifdef __cplusplus
		429	extern "C" {
		430	# endif
		431	int signalfd (int fd, const sigset_t *mask, int flags);
		432
		433	struct signalfd_siginfo
		434	{
		435	uint32_t ssi_signo;
		436	char pad[128 - sizeof (uint32_t)];
		437	};
		438	# ifdef __cplusplus
		439	}
		440	# endif
		441	#endif
		442
345		443
346	/**/	444	/**/
347		445
348	#if EV_VERIFY >= 3	446	#if EV_VERIFY >= 3
349	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	447	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
…		…
361	*/	459	*/
362	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	460	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
363		461
364	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	462	#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) */	463	#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		464
368	#if __GNUC__ >= 4	465	#if __GNUC__ >= 4
369	# define expect(expr,value) __builtin_expect ((expr),(value))	466	# define expect(expr,value) __builtin_expect ((expr),(value))
370	# define noinline __attribute__ ((noinline))	467	# define noinline __attribute__ ((noinline))
371	#else	468	#else
…		…
384	# define inline_speed static noinline	481	# define inline_speed static noinline
385	#else	482	#else
386	# define inline_speed static inline	483	# define inline_speed static inline
387	#endif	484	#endif
388		485
389	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	486	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		487
		488	#if EV_MINPRI == EV_MAXPRI
		489	# define ABSPRI(w) (((W)w), 0)
		490	#else
390	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	491	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		492	#endif
391		493
392	#define EMPTY /* required for microsofts broken pseudo-c compiler */	494	#define EMPTY /* required for microsofts broken pseudo-c compiler */
393	#define EMPTY2(a,b) /* used to suppress some warnings */	495	#define EMPTY2(a,b) /* used to suppress some warnings */
394		496
395	typedef ev_watcher *W;	497	typedef ev_watcher *W;
…		…
407		509
408	#if EV_USE_MONOTONIC	510	#if EV_USE_MONOTONIC
409	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	511	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410	#endif	512	#endif
411		513
		514	#ifndef EV_FD_TO_WIN32_HANDLE
		515	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		516	#endif
		517	#ifndef EV_WIN32_HANDLE_TO_FD
		518	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		519	#endif
		520	#ifndef EV_WIN32_CLOSE_FD
		521	# define EV_WIN32_CLOSE_FD(fd) close (fd)
		522	#endif
		523
412	#ifdef _WIN32	524	#ifdef _WIN32
413	# include "ev_win32.c"	525	# include "ev_win32.c"
414	#endif	526	#endif
415		527
416	/*****************************************************************************/	528	/*****************************************************************************/
		529
		530	#if EV_AVOID_STDIO
		531	static void noinline
		532	ev_printerr (const char *msg)
		533	{
		534	write (STDERR_FILENO, msg, strlen (msg));
		535	}
		536	#endif
417		537
418	static void (*syserr_cb)(const char *msg);	538	static void (*syserr_cb)(const char *msg);
419		539
420	void	540	void
421	ev_set_syserr_cb (void (*cb)(const char *msg))	541	ev_set_syserr_cb (void (*cb)(const char *msg))
…		…
431		551
432	if (syserr_cb)	552	if (syserr_cb)
433	syserr_cb (msg);	553	syserr_cb (msg);
434	else	554	else
435	{	555	{
		556	#if EV_AVOID_STDIO
		557	const char *err = strerror (errno);
		558
		559	ev_printerr (msg);
		560	ev_printerr (": ");
		561	ev_printerr (err);
		562	ev_printerr ("\n");
		563	#else
436	perror (msg);	564	perror (msg);
		565	#endif
437	abort ();	566	abort ();
438	}	567	}
439	}	568	}
440		569
441	static void *	570	static void *
…		…
443	{	572	{
444	/* some systems, notably openbsd and darwin, fail to properly	573	/* some systems, notably openbsd and darwin, fail to properly
445	* implement realloc (x, 0) (as required by both ansi c-98 and	574	* implement realloc (x, 0) (as required by both ansi c-98 and
446	* the single unix specification, so work around them here.	575	* the single unix specification, so work around them here.
447	*/	576	*/
448
449	if (size)	577	if (size)
450	return realloc (ptr, size);	578	return realloc (ptr, size);
451		579
452	free (ptr);	580	free (ptr);
453	return 0;	581	return 0;
…		…
466	{	594	{
467	ptr = alloc (ptr, size);	595	ptr = alloc (ptr, size);
468		596
469	if (!ptr && size)	597	if (!ptr && size)
470	{	598	{
		599	#if EV_AVOID_STDIO
		600	ev_printerr ("libev: memory allocation failed, aborting.\n");
		601	#else
471	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	602	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		603	#endif
472	abort ();	604	abort ();
473	}	605	}
474		606
475	return ptr;	607	return ptr;
476	}	608	}
…		…
478	#define ev_malloc(size) ev_realloc (0, (size))	610	#define ev_malloc(size) ev_realloc (0, (size))
479	#define ev_free(ptr) ev_realloc ((ptr), 0)	611	#define ev_free(ptr) ev_realloc ((ptr), 0)
480		612
481	/*****************************************************************************/	613	/*****************************************************************************/
482		614
		615	/* set in reify when reification needed */
		616	#define EV_ANFD_REIFY 1
		617
		618	/* file descriptor info structure */
483	typedef struct	619	typedef struct
484	{	620	{
485	WL head;	621	WL head;
486	unsigned char events;	622	unsigned char events; /* the events watched for */
487	unsigned char reify;	623	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
488	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */	624	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489	unsigned char unused;	625	unsigned char unused;
490	#if EV_USE_EPOLL	626	#if EV_USE_EPOLL
491	unsigned int egen; /* generation counter to counter epoll bugs */	627	unsigned int egen; /* generation counter to counter epoll bugs */
492	#endif	628	#endif
493	#if EV_SELECT_IS_WINSOCKET	629	#if EV_SELECT_IS_WINSOCKET
494	SOCKET handle;	630	SOCKET handle;
495	#endif	631	#endif
496	} ANFD;	632	} ANFD;
497		633
		634	/* stores the pending event set for a given watcher */
498	typedef struct	635	typedef struct
499	{	636	{
500	W w;	637	W w;
501	int events;	638	int events; /* the pending event set for the given watcher */
502	} ANPENDING;	639	} ANPENDING;
503		640
504	#if EV_USE_INOTIFY	641	#if EV_USE_INOTIFY
505	/* hash table entry per inotify-id */	642	/* hash table entry per inotify-id */
506	typedef struct	643	typedef struct
…		…
509	} ANFS;	646	} ANFS;
510	#endif	647	#endif
511		648
512	/* Heap Entry */	649	/* Heap Entry */
513	#if EV_HEAP_CACHE_AT	650	#if EV_HEAP_CACHE_AT
		651	/* a heap element */
514	typedef struct {	652	typedef struct {
515	ev_tstamp at;	653	ev_tstamp at;
516	WT w;	654	WT w;
517	} ANHE;	655	} ANHE;
518		656
519	#define ANHE_w(he) (he).w /* access watcher, read-write */	657	#define ANHE_w(he) (he).w /* access watcher, read-write */
520	#define ANHE_at(he) (he).at /* access cached at, read-only */	658	#define ANHE_at(he) (he).at /* access cached at, read-only */
521	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */	659	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522	#else	660	#else
		661	/* a heap element */
523	typedef WT ANHE;	662	typedef WT ANHE;
524		663
525	#define ANHE_w(he) (he)	664	#define ANHE_w(he) (he)
526	#define ANHE_at(he) (he)->at	665	#define ANHE_at(he) (he)->at
527	#define ANHE_at_cache(he)	666	#define ANHE_at_cache(he)
…		…
551		690
552	static int ev_default_loop_ptr;	691	static int ev_default_loop_ptr;
553		692
554	#endif	693	#endif
555		694
		695	#if EV_MINIMAL < 2
		696	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		697	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		698	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		699	#else
		700	# define EV_RELEASE_CB (void)0
		701	# define EV_ACQUIRE_CB (void)0
		702	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		703	#endif
		704
		705	#define EVUNLOOP_RECURSE 0x80
		706
556	/*****************************************************************************/	707	/*****************************************************************************/
557		708
		709	#ifndef EV_HAVE_EV_TIME
558	ev_tstamp	710	ev_tstamp
559	ev_time (void)	711	ev_time (void)
560	{	712	{
561	#if EV_USE_REALTIME	713	#if EV_USE_REALTIME
562	if (expect_true (have_realtime))	714	if (expect_true (have_realtime))
…		…
569		721
570	struct timeval tv;	722	struct timeval tv;
571	gettimeofday (&tv, 0);	723	gettimeofday (&tv, 0);
572	return tv.tv_sec + tv.tv_usec * 1e-6;	724	return tv.tv_sec + tv.tv_usec * 1e-6;
573	}	725	}
		726	#endif
574		727
575	inline_size ev_tstamp	728	inline_size ev_tstamp
576	get_clock (void)	729	get_clock (void)
577	{	730	{
578	#if EV_USE_MONOTONIC	731	#if EV_USE_MONOTONIC
…		…
614		767
615	tv.tv_sec = (time_t)delay;	768	tv.tv_sec = (time_t)delay;
616	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	769	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
617		770
618	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	771	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619	/* somehting nto guaranteed by newer posix versions, but guaranteed */	772	/* something not guaranteed by newer posix versions, but guaranteed */
620	/* by older ones */	773	/* by older ones */
621	select (0, 0, 0, 0, &tv);	774	select (0, 0, 0, 0, &tv);
622	#endif	775	#endif
623	}	776	}
624	}	777	}
625		778
626	/*****************************************************************************/	779	/*****************************************************************************/
627		780
628	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	781	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629		782
		783	/* find a suitable new size for the given array, */
		784	/* hopefully by rounding to a ncie-to-malloc size */
630	inline_size int	785	inline_size int
631	array_nextsize (int elem, int cur, int cnt)	786	array_nextsize (int elem, int cur, int cnt)
632	{	787	{
633	int ncur = cur + 1;	788	int ncur = cur + 1;
634		789
…		…
680	#define array_free(stem, idx) \	835	#define array_free(stem, idx) \
681	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0	836	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682		837
683	/*****************************************************************************/	838	/*****************************************************************************/
684		839
		840	/* dummy callback for pending events */
		841	static void noinline
		842	pendingcb (EV_P_ ev_prepare *w, int revents)
		843	{
		844	}
		845
685	void noinline	846	void noinline
686	ev_feed_event (EV_P_ void *w, int revents)	847	ev_feed_event (EV_P_ void *w, int revents)
687	{	848	{
688	W w_ = (W)w;	849	W w_ = (W)w;
689	int pri = ABSPRI (w_);	850	int pri = ABSPRI (w_);
…		…
724	}	885	}
725		886
726	/*****************************************************************************/	887	/*****************************************************************************/
727		888
728	inline_speed void	889	inline_speed void
729	fd_event (EV_P_ int fd, int revents)	890	fd_event_nc (EV_P_ int fd, int revents)
730	{	891	{
731	ANFD *anfd = anfds + fd;	892	ANFD *anfd = anfds + fd;
732	ev_io *w;	893	ev_io *w;
733		894
734	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	895	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
738	if (ev)	899	if (ev)
739	ev_feed_event (EV_A_ (W)w, ev);	900	ev_feed_event (EV_A_ (W)w, ev);
740	}	901	}
741	}	902	}
742		903
		904	/* do not submit kernel events for fds that have reify set */
		905	/* because that means they changed while we were polling for new events */
		906	inline_speed void
		907	fd_event (EV_P_ int fd, int revents)
		908	{
		909	ANFD *anfd = anfds + fd;
		910
		911	if (expect_true (!anfd->reify))
		912	fd_event_nc (EV_A_ fd, revents);
		913	}
		914
743	void	915	void
744	ev_feed_fd_event (EV_P_ int fd, int revents)	916	ev_feed_fd_event (EV_P_ int fd, int revents)
745	{	917	{
746	if (fd >= 0 && fd < anfdmax)	918	if (fd >= 0 && fd < anfdmax)
747	fd_event (EV_A_ fd, revents);	919	fd_event_nc (EV_A_ fd, revents);
748	}	920	}
749		921
		922	/* make sure the external fd watch events are in-sync */
		923	/* with the kernel/libev internal state */
750	inline_size void	924	inline_size void
751	fd_reify (EV_P)	925	fd_reify (EV_P)
752	{	926	{
753	int i;	927	int i;
754		928
…		…
765		939
766	#if EV_SELECT_IS_WINSOCKET	940	#if EV_SELECT_IS_WINSOCKET
767	if (events)	941	if (events)
768	{	942	{
769	unsigned long arg;	943	unsigned long arg;
770	#ifdef EV_FD_TO_WIN32_HANDLE
771	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	944	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
772	#else
773	anfd->handle = _get_osfhandle (fd);
774	#endif
775	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	945	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
776	}	946	}
777	#endif	947	#endif
778		948
779	{	949	{
…		…
789	}	959	}
790		960
791	fdchangecnt = 0;	961	fdchangecnt = 0;
792	}	962	}
793		963
		964	/* something about the given fd changed */
794	inline_size void	965	inline_size void
795	fd_change (EV_P_ int fd, int flags)	966	fd_change (EV_P_ int fd, int flags)
796	{	967	{
797	unsigned char reify = anfds [fd].reify;	968	unsigned char reify = anfds [fd].reify;
798	anfds [fd].reify |= flags;	969	anfds [fd].reify |= flags;
…		…
803	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	974	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
804	fdchanges [fdchangecnt - 1] = fd;	975	fdchanges [fdchangecnt - 1] = fd;
805	}	976	}
806	}	977	}
807		978
		979	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
808	inline_speed void	980	inline_speed void
809	fd_kill (EV_P_ int fd)	981	fd_kill (EV_P_ int fd)
810	{	982	{
811	ev_io *w;	983	ev_io *w;
812		984
…		…
815	ev_io_stop (EV_A_ w);	987	ev_io_stop (EV_A_ w);
816	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	988	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
817	}	989	}
818	}	990	}
819		991
		992	/* check whether the given fd is atcually valid, for error recovery */
820	inline_size int	993	inline_size int
821	fd_valid (int fd)	994	fd_valid (int fd)
822	{	995	{
823	#ifdef _WIN32	996	#ifdef _WIN32
824	return _get_osfhandle (fd) != -1;	997	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
825	#else	998	#else
826	return fcntl (fd, F_GETFD) != -1;	999	return fcntl (fd, F_GETFD) != -1;
827	#endif	1000	#endif
828	}	1001	}
829		1002
…		…
847		1020
848	for (fd = anfdmax; fd--; )	1021	for (fd = anfdmax; fd--; )
849	if (anfds [fd].events)	1022	if (anfds [fd].events)
850	{	1023	{
851	fd_kill (EV_A_ fd);	1024	fd_kill (EV_A_ fd);
852	return;	1025	break;
853	}	1026	}
854	}	1027	}
855		1028
856	/* usually called after fork if backend needs to re-arm all fds from scratch */	1029	/* usually called after fork if backend needs to re-arm all fds from scratch */
857	static void noinline	1030	static void noinline
…		…
862	for (fd = 0; fd < anfdmax; ++fd)	1035	for (fd = 0; fd < anfdmax; ++fd)
863	if (anfds [fd].events)	1036	if (anfds [fd].events)
864	{	1037	{
865	anfds [fd].events = 0;	1038	anfds [fd].events = 0;
866	anfds [fd].emask = 0;	1039	anfds [fd].emask = 0;
867	fd_change (EV_A_ fd, EV__IOFDSET | 1);	1040	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
868	}	1041	}
869	}	1042	}
870		1043
871	/*****************************************************************************/	1044	/*****************************************************************************/
872		1045
…		…
947		1120
948	for (;;)	1121	for (;;)
949	{	1122	{
950	int c = k << 1;	1123	int c = k << 1;
951		1124
952	if (c > N + HEAP0 - 1)	1125	if (c >= N + HEAP0)
953	break;	1126	break;
954		1127
955	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1128	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
956	? 1 : 0;	1129	? 1 : 0;
957		1130
…		…
989		1162
990	heap [k] = he;	1163	heap [k] = he;
991	ev_active (ANHE_w (he)) = k;	1164	ev_active (ANHE_w (he)) = k;
992	}	1165	}
993		1166
		1167	/* move an element suitably so it is in a correct place */
994	inline_size void	1168	inline_size void
995	adjustheap (ANHE *heap, int N, int k)	1169	adjustheap (ANHE *heap, int N, int k)
996	{	1170	{
997	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1171	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
998	upheap (heap, k);	1172	upheap (heap, k);
999	else	1173	else
1000	downheap (heap, N, k);	1174	downheap (heap, N, k);
1001	}	1175	}
1002		1176
…		…
1012	upheap (heap, i + HEAP0);	1186	upheap (heap, i + HEAP0);
1013	}	1187	}
1014		1188
1015	/*****************************************************************************/	1189	/*****************************************************************************/
1016		1190
		1191	/* associate signal watchers to a signal signal */
1017	typedef struct	1192	typedef struct
1018	{	1193	{
		1194	EV_ATOMIC_T pending;
		1195	#if EV_MULTIPLICITY
		1196	EV_P;
		1197	#endif
1019	WL head;	1198	WL head;
1020	EV_ATOMIC_T gotsig;
1021	} ANSIG;	1199	} ANSIG;
1022		1200
1023	static ANSIG *signals;	1201	static ANSIG signals [EV_NSIG - 1];
1024	static int signalmax;
1025
1026	static EV_ATOMIC_T gotsig;
1027		1202
1028	/*****************************************************************************/	1203	/*****************************************************************************/
1029		1204
		1205	/* used to prepare libev internal fd's */
		1206	/* this is not fork-safe */
1030	inline_speed void	1207	inline_speed void
1031	fd_intern (int fd)	1208	fd_intern (int fd)
1032	{	1209	{
1033	#ifdef _WIN32	1210	#ifdef _WIN32
1034	unsigned long arg = 1;	1211	unsigned long arg = 1;
1035	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1212	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1036	#else	1213	#else
1037	fcntl (fd, F_SETFD, FD_CLOEXEC);	1214	fcntl (fd, F_SETFD, FD_CLOEXEC);
1038	fcntl (fd, F_SETFL, O_NONBLOCK);	1215	fcntl (fd, F_SETFL, O_NONBLOCK);
1039	#endif	1216	#endif
1040	}	1217	}
1041		1218
1042	static void noinline	1219	static void noinline
1043	evpipe_init (EV_P)	1220	evpipe_init (EV_P)
1044	{	1221	{
1045	if (!ev_is_active (&pipeev))	1222	if (!ev_is_active (&pipe_w))
1046	{	1223	{
1047	#if EV_USE_EVENTFD	1224	#if EV_USE_EVENTFD
		1225	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1226	if (evfd < 0 && errno == EINVAL)
1048	if ((evfd = eventfd (0, 0)) >= 0)	1227	evfd = eventfd (0, 0);
		1228
		1229	if (evfd >= 0)
1049	{	1230	{
1050	evpipe [0] = -1;	1231	evpipe [0] = -1;
1051	fd_intern (evfd);	1232	fd_intern (evfd); /* doing it twice doesn't hurt */
1052	ev_io_set (&pipeev, evfd, EV_READ);	1233	ev_io_set (&pipe_w, evfd, EV_READ);
1053	}	1234	}
1054	else	1235	else
1055	#endif	1236	#endif
1056	{	1237	{
1057	while (pipe (evpipe))	1238	while (pipe (evpipe))
1058	ev_syserr ("(libev) error creating signal/async pipe");	1239	ev_syserr ("(libev) error creating signal/async pipe");
1059		1240
1060	fd_intern (evpipe [0]);	1241	fd_intern (evpipe [0]);
1061	fd_intern (evpipe [1]);	1242	fd_intern (evpipe [1]);
1062	ev_io_set (&pipeev, evpipe [0], EV_READ);	1243	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1063	}	1244	}
1064		1245
1065	ev_io_start (EV_A_ &pipeev);	1246	ev_io_start (EV_A_ &pipe_w);
1066	ev_unref (EV_A); /* watcher should not keep loop alive */	1247	ev_unref (EV_A); /* watcher should not keep loop alive */
1067	}	1248	}
1068	}	1249	}
1069		1250
1070	inline_size void	1251	inline_size void
…		…
1088		1269
1089	errno = old_errno;	1270	errno = old_errno;
1090	}	1271	}
1091	}	1272	}
1092		1273
		1274	/* called whenever the libev signal pipe */
		1275	/* got some events (signal, async) */
1093	static void	1276	static void
1094	pipecb (EV_P_ ev_io *iow, int revents)	1277	pipecb (EV_P_ ev_io *iow, int revents)
1095	{	1278	{
		1279	int i;
		1280
1096	#if EV_USE_EVENTFD	1281	#if EV_USE_EVENTFD
1097	if (evfd >= 0)	1282	if (evfd >= 0)
1098	{	1283	{
1099	uint64_t counter;	1284	uint64_t counter;
1100	read (evfd, &counter, sizeof (uint64_t));	1285	read (evfd, &counter, sizeof (uint64_t));
…		…
1104	{	1289	{
1105	char dummy;	1290	char dummy;
1106	read (evpipe [0], &dummy, 1);	1291	read (evpipe [0], &dummy, 1);
1107	}	1292	}
1108		1293
1109	if (gotsig && ev_is_default_loop (EV_A))	1294	if (sig_pending)
1110	{	1295	{
1111	int signum;	1296	sig_pending = 0;
1112	gotsig = 0;
1113		1297
1114	for (signum = signalmax; signum--; )	1298	for (i = EV_NSIG - 1; i--; )
1115	if (signals [signum].gotsig)	1299	if (expect_false (signals [i].pending))
1116	ev_feed_signal_event (EV_A_ signum + 1);	1300	ev_feed_signal_event (EV_A_ i + 1);
1117	}	1301	}
1118		1302
1119	#if EV_ASYNC_ENABLE	1303	#if EV_ASYNC_ENABLE
1120	if (gotasync)	1304	if (async_pending)
1121	{	1305	{
1122	int i;	1306	async_pending = 0;
1123	gotasync = 0;
1124		1307
1125	for (i = asynccnt; i--; )	1308	for (i = asynccnt; i--; )
1126	if (asyncs [i]->sent)	1309	if (asyncs [i]->sent)
1127	{	1310	{
1128	asyncs [i]->sent = 0;	1311	asyncs [i]->sent = 0;
…		…
1136		1319
1137	static void	1320	static void
1138	ev_sighandler (int signum)	1321	ev_sighandler (int signum)
1139	{	1322	{
1140	#if EV_MULTIPLICITY	1323	#if EV_MULTIPLICITY
1141	struct ev_loop *loop = &default_loop_struct;	1324	EV_P = signals [signum - 1].loop;
1142	#endif	1325	#endif
1143		1326
1144	#if _WIN32	1327	#ifdef _WIN32
1145	signal (signum, ev_sighandler);	1328	signal (signum, ev_sighandler);
1146	#endif	1329	#endif
1147		1330
1148	signals [signum - 1].gotsig = 1;	1331	signals [signum - 1].pending = 1;
1149	evpipe_write (EV_A_ &gotsig);	1332	evpipe_write (EV_A_ &sig_pending);
1150	}	1333	}
1151		1334
1152	void noinline	1335	void noinline
1153	ev_feed_signal_event (EV_P_ int signum)	1336	ev_feed_signal_event (EV_P_ int signum)
1154	{	1337	{
1155	WL w;	1338	WL w;
1156		1339
		1340	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1341	return;
		1342
		1343	--signum;
		1344
1157	#if EV_MULTIPLICITY	1345	#if EV_MULTIPLICITY
1158	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1346	/* it is permissible to try to feed a signal to the wrong loop */
1159	#endif	1347	/* or, likely more useful, feeding a signal nobody is waiting for */
1160		1348
1161	--signum;	1349	if (expect_false (signals [signum].loop != EV_A))
1162
1163	if (signum < 0 || signum >= signalmax)
1164	return;	1350	return;
		1351	#endif
1165		1352
1166	signals [signum].gotsig = 0;	1353	signals [signum].pending = 0;
1167		1354
1168	for (w = signals [signum].head; w; w = w->next)	1355	for (w = signals [signum].head; w; w = w->next)
1169	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1356	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1170	}	1357	}
1171		1358
		1359	#if EV_USE_SIGNALFD
		1360	static void
		1361	sigfdcb (EV_P_ ev_io *iow, int revents)
		1362	{
		1363	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1364
		1365	for (;;)
		1366	{
		1367	ssize_t res = read (sigfd, si, sizeof (si));
		1368
		1369	/* not ISO-C, as res might be -1, but works with SuS */
		1370	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1371	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1372
		1373	if (res < (ssize_t)sizeof (si))
		1374	break;
		1375	}
		1376	}
		1377	#endif
		1378
1172	/*****************************************************************************/	1379	/*****************************************************************************/
1173		1380
1174	static WL childs [EV_PID_HASHSIZE];	1381	static WL childs [EV_PID_HASHSIZE];
1175		1382
1176	#ifndef _WIN32	1383	#ifndef _WIN32
…		…
1179		1386
1180	#ifndef WIFCONTINUED	1387	#ifndef WIFCONTINUED
1181	# define WIFCONTINUED(status) 0	1388	# define WIFCONTINUED(status) 0
1182	#endif	1389	#endif
1183		1390
		1391	/* handle a single child status event */
1184	inline_speed void	1392	inline_speed void
1185	child_reap (EV_P_ int chain, int pid, int status)	1393	child_reap (EV_P_ int chain, int pid, int status)
1186	{	1394	{
1187	ev_child *w;	1395	ev_child *w;
1188	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1396	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
…		…
1202		1410
1203	#ifndef WCONTINUED	1411	#ifndef WCONTINUED
1204	# define WCONTINUED 0	1412	# define WCONTINUED 0
1205	#endif	1413	#endif
1206		1414
		1415	/* called on sigchld etc., calls waitpid */
1207	static void	1416	static void
1208	childcb (EV_P_ ev_signal *sw, int revents)	1417	childcb (EV_P_ ev_signal *sw, int revents)
1209	{	1418	{
1210	int pid, status;	1419	int pid, status;
1211		1420
…		…
1318	ev_backend (EV_P)	1527	ev_backend (EV_P)
1319	{	1528	{
1320	return backend;	1529	return backend;
1321	}	1530	}
1322		1531
		1532	#if EV_MINIMAL < 2
1323	unsigned int	1533	unsigned int
1324	ev_loop_count (EV_P)	1534	ev_loop_count (EV_P)
1325	{	1535	{
1326	return loop_count;	1536	return loop_count;
1327	}	1537	}
1328		1538
		1539	unsigned int
		1540	ev_loop_depth (EV_P)
		1541	{
		1542	return loop_depth;
		1543	}
		1544
1329	void	1545	void
1330	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1546	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1331	{	1547	{
1332	io_blocktime = interval;	1548	io_blocktime = interval;
1333	}	1549	}
…		…
1336	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1552	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1337	{	1553	{
1338	timeout_blocktime = interval;	1554	timeout_blocktime = interval;
1339	}	1555	}
1340		1556
		1557	void
		1558	ev_set_userdata (EV_P_ void *data)
		1559	{
		1560	userdata = data;
		1561	}
		1562
		1563	void *
		1564	ev_userdata (EV_P)
		1565	{
		1566	return userdata;
		1567	}
		1568
		1569	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1570	{
		1571	invoke_cb = invoke_pending_cb;
		1572	}
		1573
		1574	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1575	{
		1576	release_cb = release;
		1577	acquire_cb = acquire;
		1578	}
		1579	#endif
		1580
		1581	/* initialise a loop structure, must be zero-initialised */
1341	static void noinline	1582	static void noinline
1342	loop_init (EV_P_ unsigned int flags)	1583	loop_init (EV_P_ unsigned int flags)
1343	{	1584	{
1344	if (!backend)	1585	if (!backend)
1345	{	1586	{
…		…
1361	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1602	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1362	have_monotonic = 1;	1603	have_monotonic = 1;
1363	}	1604	}
1364	#endif	1605	#endif
1365		1606
		1607	/* pid check not overridable via env */
		1608	#ifndef _WIN32
		1609	if (flags & EVFLAG_FORKCHECK)
		1610	curpid = getpid ();
		1611	#endif
		1612
		1613	if (!(flags & EVFLAG_NOENV)
		1614	&& !enable_secure ()
		1615	&& getenv ("LIBEV_FLAGS"))
		1616	flags = atoi (getenv ("LIBEV_FLAGS"));
		1617
1366	ev_rt_now = ev_time ();	1618	ev_rt_now = ev_time ();
1367	mn_now = get_clock ();	1619	mn_now = get_clock ();
1368	now_floor = mn_now;	1620	now_floor = mn_now;
1369	rtmn_diff = ev_rt_now - mn_now;	1621	rtmn_diff = ev_rt_now - mn_now;
		1622	#if EV_MINIMAL < 2
		1623	invoke_cb = ev_invoke_pending;
		1624	#endif
1370		1625
1371	io_blocktime = 0.;	1626	io_blocktime = 0.;
1372	timeout_blocktime = 0.;	1627	timeout_blocktime = 0.;
1373	backend = 0;	1628	backend = 0;
1374	backend_fd = -1;	1629	backend_fd = -1;
1375	gotasync = 0;	1630	sig_pending = 0;
		1631	#if EV_ASYNC_ENABLE
		1632	async_pending = 0;
		1633	#endif
1376	#if EV_USE_INOTIFY	1634	#if EV_USE_INOTIFY
1377	fs_fd = -2;	1635	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1378	#endif	1636	#endif
1379		1637	#if EV_USE_SIGNALFD
1380	/* pid check not overridable via env */	1638	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1381	#ifndef _WIN32
1382	if (flags & EVFLAG_FORKCHECK)
1383	curpid = getpid ();
1384	#endif	1639	#endif
1385
1386	if (!(flags & EVFLAG_NOENV)
1387	&& !enable_secure ()
1388	&& getenv ("LIBEV_FLAGS"))
1389	flags = atoi (getenv ("LIBEV_FLAGS"));
1390		1640
1391	if (!(flags & 0x0000ffffU))	1641	if (!(flags & 0x0000ffffU))
1392	flags |= ev_recommended_backends ();	1642	flags |= ev_recommended_backends ();
1393		1643
1394	#if EV_USE_PORT	1644	#if EV_USE_PORT
…		…
1405	#endif	1655	#endif
1406	#if EV_USE_SELECT	1656	#if EV_USE_SELECT
1407	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1657	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1408	#endif	1658	#endif
1409		1659
		1660	ev_prepare_init (&pending_w, pendingcb);
		1661
1410	ev_init (&pipeev, pipecb);	1662	ev_init (&pipe_w, pipecb);
1411	ev_set_priority (&pipeev, EV_MAXPRI);	1663	ev_set_priority (&pipe_w, EV_MAXPRI);
1412	}	1664	}
1413	}	1665	}
1414		1666
		1667	/* free up a loop structure */
1415	static void noinline	1668	static void noinline
1416	loop_destroy (EV_P)	1669	loop_destroy (EV_P)
1417	{	1670	{
1418	int i;	1671	int i;
1419		1672
1420	if (ev_is_active (&pipeev))	1673	if (ev_is_active (&pipe_w))
1421	{	1674	{
1422	ev_ref (EV_A); /* signal watcher */	1675	/*ev_ref (EV_A);*/
1423	ev_io_stop (EV_A_ &pipeev);	1676	/*ev_io_stop (EV_A_ &pipe_w);*/
1424		1677
1425	#if EV_USE_EVENTFD	1678	#if EV_USE_EVENTFD
1426	if (evfd >= 0)	1679	if (evfd >= 0)
1427	close (evfd);	1680	close (evfd);
1428	#endif	1681	#endif
1429		1682
1430	if (evpipe [0] >= 0)	1683	if (evpipe [0] >= 0)
1431	{	1684	{
1432	close (evpipe [0]);	1685	EV_WIN32_CLOSE_FD (evpipe [0]);
1433	close (evpipe [1]);	1686	EV_WIN32_CLOSE_FD (evpipe [1]);
1434	}	1687	}
1435	}	1688	}
		1689
		1690	#if EV_USE_SIGNALFD
		1691	if (ev_is_active (&sigfd_w))
		1692	close (sigfd);
		1693	#endif
1436		1694
1437	#if EV_USE_INOTIFY	1695	#if EV_USE_INOTIFY
1438	if (fs_fd >= 0)	1696	if (fs_fd >= 0)
1439	close (fs_fd);	1697	close (fs_fd);
1440	#endif	1698	#endif
…		…
1464	#if EV_IDLE_ENABLE	1722	#if EV_IDLE_ENABLE
1465	array_free (idle, [i]);	1723	array_free (idle, [i]);
1466	#endif	1724	#endif
1467	}	1725	}
1468		1726
1469	ev_free (anfds); anfdmax = 0;	1727	ev_free (anfds); anfds = 0; anfdmax = 0;
1470		1728
1471	/* have to use the microsoft-never-gets-it-right macro */	1729	/* have to use the microsoft-never-gets-it-right macro */
1472	array_free (rfeed, EMPTY);	1730	array_free (rfeed, EMPTY);
1473	array_free (fdchange, EMPTY);	1731	array_free (fdchange, EMPTY);
1474	array_free (timer, EMPTY);	1732	array_free (timer, EMPTY);
…		…
1505	#endif	1763	#endif
1506	#if EV_USE_INOTIFY	1764	#if EV_USE_INOTIFY
1507	infy_fork (EV_A);	1765	infy_fork (EV_A);
1508	#endif	1766	#endif
1509		1767
1510	if (ev_is_active (&pipeev))	1768	if (ev_is_active (&pipe_w))
1511	{	1769	{
1512	/* this "locks" the handlers against writing to the pipe */	1770	/* this "locks" the handlers against writing to the pipe */
1513	/* while we modify the fd vars */	1771	/* while we modify the fd vars */
1514	gotsig = 1;	1772	sig_pending = 1;
1515	#if EV_ASYNC_ENABLE	1773	#if EV_ASYNC_ENABLE
1516	gotasync = 1;	1774	async_pending = 1;
1517	#endif	1775	#endif
1518		1776
1519	ev_ref (EV_A);	1777	ev_ref (EV_A);
1520	ev_io_stop (EV_A_ &pipeev);	1778	ev_io_stop (EV_A_ &pipe_w);
1521		1779
1522	#if EV_USE_EVENTFD	1780	#if EV_USE_EVENTFD
1523	if (evfd >= 0)	1781	if (evfd >= 0)
1524	close (evfd);	1782	close (evfd);
1525	#endif	1783	#endif
1526		1784
1527	if (evpipe [0] >= 0)	1785	if (evpipe [0] >= 0)
1528	{	1786	{
1529	close (evpipe [0]);	1787	EV_WIN32_CLOSE_FD (evpipe [0]);
1530	close (evpipe [1]);	1788	EV_WIN32_CLOSE_FD (evpipe [1]);
1531	}	1789	}
1532		1790
1533	evpipe_init (EV_A);	1791	evpipe_init (EV_A);
1534	/* now iterate over everything, in case we missed something */	1792	/* now iterate over everything, in case we missed something */
1535	pipecb (EV_A_ &pipeev, EV_READ);	1793	pipecb (EV_A_ &pipe_w, EV_READ);
1536	}	1794	}
1537		1795
1538	postfork = 0;	1796	postfork = 0;
1539	}	1797	}
1540		1798
1541	#if EV_MULTIPLICITY	1799	#if EV_MULTIPLICITY
1542		1800
1543	struct ev_loop *	1801	struct ev_loop *
1544	ev_loop_new (unsigned int flags)	1802	ev_loop_new (unsigned int flags)
1545	{	1803	{
1546	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1804	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1547		1805
1548	memset (loop, 0, sizeof (struct ev_loop));	1806	memset (EV_A, 0, sizeof (struct ev_loop));
1549
1550	loop_init (EV_A_ flags);	1807	loop_init (EV_A_ flags);
1551		1808
1552	if (ev_backend (EV_A))	1809	if (ev_backend (EV_A))
1553	return loop;	1810	return EV_A;
1554		1811
1555	return 0;	1812	return 0;
1556	}	1813	}
1557		1814
1558	void	1815	void
…		…
1565	void	1822	void
1566	ev_loop_fork (EV_P)	1823	ev_loop_fork (EV_P)
1567	{	1824	{
1568	postfork = 1; /* must be in line with ev_default_fork */	1825	postfork = 1; /* must be in line with ev_default_fork */
1569	}	1826	}
		1827	#endif /* multiplicity */
1570		1828
1571	#if EV_VERIFY	1829	#if EV_VERIFY
1572	static void noinline	1830	static void noinline
1573	verify_watcher (EV_P_ W w)	1831	verify_watcher (EV_P_ W w)
1574	{	1832	{
…		…
1602	verify_watcher (EV_A_ ws [cnt]);	1860	verify_watcher (EV_A_ ws [cnt]);
1603	}	1861	}
1604	}	1862	}
1605	#endif	1863	#endif
1606		1864
		1865	#if EV_MINIMAL < 2
1607	void	1866	void
1608	ev_loop_verify (EV_P)	1867	ev_loop_verify (EV_P)
1609	{	1868	{
1610	#if EV_VERIFY	1869	#if EV_VERIFY
1611	int i;	1870	int i;
…		…
1660	assert (checkmax >= checkcnt);	1919	assert (checkmax >= checkcnt);
1661	array_verify (EV_A_ (W *)checks, checkcnt);	1920	array_verify (EV_A_ (W *)checks, checkcnt);
1662		1921
1663	# if 0	1922	# if 0
1664	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1923	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1665	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1924	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1666	# endif
1667	#endif	1925	# endif
		1926	#endif
1668	}	1927	}
1669		1928	#endif
1670	#endif /* multiplicity */
1671		1929
1672	#if EV_MULTIPLICITY	1930	#if EV_MULTIPLICITY
1673	struct ev_loop *	1931	struct ev_loop *
1674	ev_default_loop_init (unsigned int flags)	1932	ev_default_loop_init (unsigned int flags)
1675	#else	1933	#else
…		…
1678	#endif	1936	#endif
1679	{	1937	{
1680	if (!ev_default_loop_ptr)	1938	if (!ev_default_loop_ptr)
1681	{	1939	{
1682	#if EV_MULTIPLICITY	1940	#if EV_MULTIPLICITY
1683	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1941	EV_P = ev_default_loop_ptr = &default_loop_struct;
1684	#else	1942	#else
1685	ev_default_loop_ptr = 1;	1943	ev_default_loop_ptr = 1;
1686	#endif	1944	#endif
1687		1945
1688	loop_init (EV_A_ flags);	1946	loop_init (EV_A_ flags);
…		…
1705		1963
1706	void	1964	void
1707	ev_default_destroy (void)	1965	ev_default_destroy (void)
1708	{	1966	{
1709	#if EV_MULTIPLICITY	1967	#if EV_MULTIPLICITY
1710	struct ev_loop *loop = ev_default_loop_ptr;	1968	EV_P = ev_default_loop_ptr;
1711	#endif	1969	#endif
1712		1970
1713	ev_default_loop_ptr = 0;	1971	ev_default_loop_ptr = 0;
1714		1972
1715	#ifndef _WIN32	1973	#ifndef _WIN32
…		…
1722		1980
1723	void	1981	void
1724	ev_default_fork (void)	1982	ev_default_fork (void)
1725	{	1983	{
1726	#if EV_MULTIPLICITY	1984	#if EV_MULTIPLICITY
1727	struct ev_loop *loop = ev_default_loop_ptr;	1985	EV_P = ev_default_loop_ptr;
1728	#endif	1986	#endif
1729		1987
1730	postfork = 1; /* must be in line with ev_loop_fork */	1988	postfork = 1; /* must be in line with ev_loop_fork */
1731	}	1989	}
1732		1990
…		…
1736	ev_invoke (EV_P_ void *w, int revents)	1994	ev_invoke (EV_P_ void *w, int revents)
1737	{	1995	{
1738	EV_CB_INVOKE ((W)w, revents);	1996	EV_CB_INVOKE ((W)w, revents);
1739	}	1997	}
1740		1998
1741	inline_speed void	1999	unsigned int
1742	call_pending (EV_P)	2000	ev_pending_count (EV_P)
		2001	{
		2002	int pri;
		2003	unsigned int count = 0;
		2004
		2005	for (pri = NUMPRI; pri--; )
		2006	count += pendingcnt [pri];
		2007
		2008	return count;
		2009	}
		2010
		2011	void noinline
		2012	ev_invoke_pending (EV_P)
1743	{	2013	{
1744	int pri;	2014	int pri;
1745		2015
1746	for (pri = NUMPRI; pri--; )	2016	for (pri = NUMPRI; pri--; )
1747	while (pendingcnt [pri])	2017	while (pendingcnt [pri])
1748	{	2018	{
1749	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	2019	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1750		2020
1751	if (expect_true (p->w))
1752	{
1753	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/	2021	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		2022	/* ^ this is no longer true, as pending_w could be here */
1754		2023
1755	p->w->pending = 0;	2024	p->w->pending = 0;
1756	EV_CB_INVOKE (p->w, p->events);	2025	EV_CB_INVOKE (p->w, p->events);
1757	EV_FREQUENT_CHECK;	2026	EV_FREQUENT_CHECK;
1758	}
1759	}	2027	}
1760	}	2028	}
1761		2029
1762	#if EV_IDLE_ENABLE	2030	#if EV_IDLE_ENABLE
		2031	/* make idle watchers pending. this handles the "call-idle */
		2032	/* only when higher priorities are idle" logic */
1763	inline_size void	2033	inline_size void
1764	idle_reify (EV_P)	2034	idle_reify (EV_P)
1765	{	2035	{
1766	if (expect_false (idleall))	2036	if (expect_false (idleall))
1767	{	2037	{
…		…
1780	}	2050	}
1781	}	2051	}
1782	}	2052	}
1783	#endif	2053	#endif
1784		2054
		2055	/* make timers pending */
1785	inline_size void	2056	inline_size void
1786	timers_reify (EV_P)	2057	timers_reify (EV_P)
1787	{	2058	{
1788	EV_FREQUENT_CHECK;	2059	EV_FREQUENT_CHECK;
1789		2060
…		…
1818	feed_reverse_done (EV_A_ EV_TIMEOUT);	2089	feed_reverse_done (EV_A_ EV_TIMEOUT);
1819	}	2090	}
1820	}	2091	}
1821		2092
1822	#if EV_PERIODIC_ENABLE	2093	#if EV_PERIODIC_ENABLE
		2094	/* make periodics pending */
1823	inline_size void	2095	inline_size void
1824	periodics_reify (EV_P)	2096	periodics_reify (EV_P)
1825	{	2097	{
1826	EV_FREQUENT_CHECK;	2098	EV_FREQUENT_CHECK;
1827		2099
…		…
1874		2146
1875	feed_reverse_done (EV_A_ EV_PERIODIC);	2147	feed_reverse_done (EV_A_ EV_PERIODIC);
1876	}	2148	}
1877	}	2149	}
1878		2150
		2151	/* simply recalculate all periodics */
		2152	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1879	static void noinline	2153	static void noinline
1880	periodics_reschedule (EV_P)	2154	periodics_reschedule (EV_P)
1881	{	2155	{
1882	int i;	2156	int i;
1883		2157
…		…
1896		2170
1897	reheap (periodics, periodiccnt);	2171	reheap (periodics, periodiccnt);
1898	}	2172	}
1899	#endif	2173	#endif
1900		2174
		2175	/* adjust all timers by a given offset */
		2176	static void noinline
		2177	timers_reschedule (EV_P_ ev_tstamp adjust)
		2178	{
		2179	int i;
		2180
		2181	for (i = 0; i < timercnt; ++i)
		2182	{
		2183	ANHE *he = timers + i + HEAP0;
		2184	ANHE_w (*he)->at += adjust;
		2185	ANHE_at_cache (*he);
		2186	}
		2187	}
		2188
		2189	/* fetch new monotonic and realtime times from the kernel */
		2190	/* also detect if there was a timejump, and act accordingly */
1901	inline_speed void	2191	inline_speed void
1902	time_update (EV_P_ ev_tstamp max_block)	2192	time_update (EV_P_ ev_tstamp max_block)
1903	{	2193	{
1904	int i;
1905
1906	#if EV_USE_MONOTONIC	2194	#if EV_USE_MONOTONIC
1907	if (expect_true (have_monotonic))	2195	if (expect_true (have_monotonic))
1908	{	2196	{
		2197	int i;
1909	ev_tstamp odiff = rtmn_diff;	2198	ev_tstamp odiff = rtmn_diff;
1910		2199
1911	mn_now = get_clock ();	2200	mn_now = get_clock ();
1912		2201
1913	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2202	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1939	ev_rt_now = ev_time ();	2228	ev_rt_now = ev_time ();
1940	mn_now = get_clock ();	2229	mn_now = get_clock ();
1941	now_floor = mn_now;	2230	now_floor = mn_now;
1942	}	2231	}
1943		2232
		2233	/* no timer adjustment, as the monotonic clock doesn't jump */
		2234	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1944	# if EV_PERIODIC_ENABLE	2235	# if EV_PERIODIC_ENABLE
1945	periodics_reschedule (EV_A);	2236	periodics_reschedule (EV_A);
1946	# endif	2237	# endif
1947	/* no timer adjustment, as the monotonic clock doesn't jump */
1948	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1949	}	2238	}
1950	else	2239	else
1951	#endif	2240	#endif
1952	{	2241	{
1953	ev_rt_now = ev_time ();	2242	ev_rt_now = ev_time ();
1954		2243
1955	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2244	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1956	{	2245	{
		2246	/* adjust timers. this is easy, as the offset is the same for all of them */
		2247	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1957	#if EV_PERIODIC_ENABLE	2248	#if EV_PERIODIC_ENABLE
1958	periodics_reschedule (EV_A);	2249	periodics_reschedule (EV_A);
1959	#endif	2250	#endif
1960	/* adjust timers. this is easy, as the offset is the same for all of them */
1961	for (i = 0; i < timercnt; ++i)
1962	{
1963	ANHE *he = timers + i + HEAP0;
1964	ANHE_w (*he)->at += ev_rt_now - mn_now;
1965	ANHE_at_cache (*he);
1966	}
1967	}	2251	}
1968		2252
1969	mn_now = ev_rt_now;	2253	mn_now = ev_rt_now;
1970	}	2254	}
1971	}	2255	}
1972		2256
1973	void	2257	void
1974	ev_ref (EV_P)
1975	{
1976	++activecnt;
1977	}
1978
1979	void
1980	ev_unref (EV_P)
1981	{
1982	--activecnt;
1983	}
1984
1985	void
1986	ev_now_update (EV_P)
1987	{
1988	time_update (EV_A_ 1e100);
1989	}
1990
1991	static int loop_done;
1992
1993	void
1994	ev_loop (EV_P_ int flags)	2258	ev_loop (EV_P_ int flags)
1995	{	2259	{
		2260	#if EV_MINIMAL < 2
		2261	++loop_depth;
		2262	#endif
		2263
		2264	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2265
1996	loop_done = EVUNLOOP_CANCEL;	2266	loop_done = EVUNLOOP_CANCEL;
1997		2267
1998	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2268	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1999		2269
2000	do	2270	do
2001	{	2271	{
2002	#if EV_VERIFY >= 2	2272	#if EV_VERIFY >= 2
2003	ev_loop_verify (EV_A);	2273	ev_loop_verify (EV_A);
…		…
2016	/* we might have forked, so queue fork handlers */	2286	/* we might have forked, so queue fork handlers */
2017	if (expect_false (postfork))	2287	if (expect_false (postfork))
2018	if (forkcnt)	2288	if (forkcnt)
2019	{	2289	{
2020	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2290	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2021	call_pending (EV_A);	2291	EV_INVOKE_PENDING;
2022	}	2292	}
2023	#endif	2293	#endif
2024		2294
2025	/* queue prepare watchers (and execute them) */	2295	/* queue prepare watchers (and execute them) */
2026	if (expect_false (preparecnt))	2296	if (expect_false (preparecnt))
2027	{	2297	{
2028	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2298	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2029	call_pending (EV_A);	2299	EV_INVOKE_PENDING;
2030	}	2300	}
		2301
		2302	if (expect_false (loop_done))
		2303	break;
2031		2304
2032	/* we might have forked, so reify kernel state if necessary */	2305	/* we might have forked, so reify kernel state if necessary */
2033	if (expect_false (postfork))	2306	if (expect_false (postfork))
2034	loop_fork (EV_A);	2307	loop_fork (EV_A);
2035		2308
…		…
2041	ev_tstamp waittime = 0.;	2314	ev_tstamp waittime = 0.;
2042	ev_tstamp sleeptime = 0.;	2315	ev_tstamp sleeptime = 0.;
2043		2316
2044	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2317	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
2045	{	2318	{
		2319	/* remember old timestamp for io_blocktime calculation */
		2320	ev_tstamp prev_mn_now = mn_now;
		2321
2046	/* update time to cancel out callback processing overhead */	2322	/* update time to cancel out callback processing overhead */
2047	time_update (EV_A_ 1e100);	2323	time_update (EV_A_ 1e100);
		2324
		2325	waittime = MAX_BLOCKTIME;
2048		2326
2049	if (timercnt)	2327	if (timercnt)
2050	{	2328	{
2051	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;	2329	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
2052	if (waittime > to) waittime = to;	2330	if (waittime > to) waittime = to;
…		…
2058	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2336	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2059	if (waittime > to) waittime = to;	2337	if (waittime > to) waittime = to;
2060	}	2338	}
2061	#endif	2339	#endif
2062		2340
		2341	/* don't let timeouts decrease the waittime below timeout_blocktime */
2063	if (expect_false (waittime < timeout_blocktime))	2342	if (expect_false (waittime < timeout_blocktime))
2064	waittime = timeout_blocktime;	2343	waittime = timeout_blocktime;
2065		2344
2066	sleeptime = waittime - backend_fudge;	2345	/* extra check because io_blocktime is commonly 0 */
2067
2068	if (expect_true (sleeptime > io_blocktime))	2346	if (expect_false (io_blocktime))
2069	sleeptime = io_blocktime;
2070
2071	if (sleeptime)
2072	{	2347	{
		2348	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2349
		2350	if (sleeptime > waittime - backend_fudge)
		2351	sleeptime = waittime - backend_fudge;
		2352
		2353	if (expect_true (sleeptime > 0.))
		2354	{
2073	ev_sleep (sleeptime);	2355	ev_sleep (sleeptime);
2074	waittime -= sleeptime;	2356	waittime -= sleeptime;
		2357	}
2075	}	2358	}
2076	}	2359	}
2077		2360
		2361	#if EV_MINIMAL < 2
2078	++loop_count;	2362	++loop_count;
		2363	#endif
		2364	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2079	backend_poll (EV_A_ waittime);	2365	backend_poll (EV_A_ waittime);
		2366	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2080		2367
2081	/* update ev_rt_now, do magic */	2368	/* update ev_rt_now, do magic */
2082	time_update (EV_A_ waittime + sleeptime);	2369	time_update (EV_A_ waittime + sleeptime);
2083	}	2370	}
2084		2371
…		…
2095		2382
2096	/* queue check watchers, to be executed first */	2383	/* queue check watchers, to be executed first */
2097	if (expect_false (checkcnt))	2384	if (expect_false (checkcnt))
2098	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2385	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2099		2386
2100	call_pending (EV_A);	2387	EV_INVOKE_PENDING;
2101	}	2388	}
2102	while (expect_true (	2389	while (expect_true (
2103	activecnt	2390	activecnt
2104	&& !loop_done	2391	&& !loop_done
2105	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2392	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2106	));	2393	));
2107		2394
2108	if (loop_done == EVUNLOOP_ONE)	2395	if (loop_done == EVUNLOOP_ONE)
2109	loop_done = EVUNLOOP_CANCEL;	2396	loop_done = EVUNLOOP_CANCEL;
		2397
		2398	#if EV_MINIMAL < 2
		2399	--loop_depth;
		2400	#endif
2110	}	2401	}
2111		2402
2112	void	2403	void
2113	ev_unloop (EV_P_ int how)	2404	ev_unloop (EV_P_ int how)
2114	{	2405	{
2115	loop_done = how;	2406	loop_done = how;
2116	}	2407	}
2117		2408
		2409	void
		2410	ev_ref (EV_P)
		2411	{
		2412	++activecnt;
		2413	}
		2414
		2415	void
		2416	ev_unref (EV_P)
		2417	{
		2418	--activecnt;
		2419	}
		2420
		2421	void
		2422	ev_now_update (EV_P)
		2423	{
		2424	time_update (EV_A_ 1e100);
		2425	}
		2426
		2427	void
		2428	ev_suspend (EV_P)
		2429	{
		2430	ev_now_update (EV_A);
		2431	}
		2432
		2433	void
		2434	ev_resume (EV_P)
		2435	{
		2436	ev_tstamp mn_prev = mn_now;
		2437
		2438	ev_now_update (EV_A);
		2439	timers_reschedule (EV_A_ mn_now - mn_prev);
		2440	#if EV_PERIODIC_ENABLE
		2441	/* TODO: really do this? */
		2442	periodics_reschedule (EV_A);
		2443	#endif
		2444	}
		2445
2118	/*****************************************************************************/	2446	/*****************************************************************************/
		2447	/* singly-linked list management, used when the expected list length is short */
2119		2448
2120	inline_size void	2449	inline_size void
2121	wlist_add (WL *head, WL elem)	2450	wlist_add (WL *head, WL elem)
2122	{	2451	{
2123	elem->next = *head;	2452	elem->next = *head;
…		…
2127	inline_size void	2456	inline_size void
2128	wlist_del (WL *head, WL elem)	2457	wlist_del (WL *head, WL elem)
2129	{	2458	{
2130	while (*head)	2459	while (*head)
2131	{	2460	{
2132	if (*head == elem)	2461	if (expect_true (*head == elem))
2133	{	2462	{
2134	*head = elem->next;	2463	*head = elem->next;
2135	return;	2464	break;
2136	}	2465	}
2137		2466
2138	head = &(*head)->next;	2467	head = &(*head)->next;
2139	}	2468	}
2140	}	2469	}
2141		2470
		2471	/* internal, faster, version of ev_clear_pending */
2142	inline_speed void	2472	inline_speed void
2143	clear_pending (EV_P_ W w)	2473	clear_pending (EV_P_ W w)
2144	{	2474	{
2145	if (w->pending)	2475	if (w->pending)
2146	{	2476	{
2147	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2477	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2148	w->pending = 0;	2478	w->pending = 0;
2149	}	2479	}
2150	}	2480	}
2151		2481
2152	int	2482	int
…		…
2156	int pending = w_->pending;	2486	int pending = w_->pending;
2157		2487
2158	if (expect_true (pending))	2488	if (expect_true (pending))
2159	{	2489	{
2160	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2490	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2491	p->w = (W)&pending_w;
2161	w_->pending = 0;	2492	w_->pending = 0;
2162	p->w = 0;
2163	return p->events;	2493	return p->events;
2164	}	2494	}
2165	else	2495	else
2166	return 0;	2496	return 0;
2167	}	2497	}
2168		2498
2169	inline_size void	2499	inline_size void
2170	pri_adjust (EV_P_ W w)	2500	pri_adjust (EV_P_ W w)
2171	{	2501	{
2172	int pri = w->priority;	2502	int pri = ev_priority (w);
2173	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2503	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2174	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2504	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2175	w->priority = pri;	2505	ev_set_priority (w, pri);
2176	}	2506	}
2177		2507
2178	inline_speed void	2508	inline_speed void
2179	ev_start (EV_P_ W w, int active)	2509	ev_start (EV_P_ W w, int active)
2180	{	2510	{
…		…
2199		2529
2200	if (expect_false (ev_is_active (w)))	2530	if (expect_false (ev_is_active (w)))
2201	return;	2531	return;
2202		2532
2203	assert (("libev: ev_io_start called with negative fd", fd >= 0));	2533	assert (("libev: ev_io_start called with negative fd", fd >= 0));
2204	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));	2534	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2205		2535
2206	EV_FREQUENT_CHECK;	2536	EV_FREQUENT_CHECK;
2207		2537
2208	ev_start (EV_A_ (W)w, 1);	2538	ev_start (EV_A_ (W)w, 1);
2209	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2539	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2210	wlist_add (&anfds[fd].head, (WL)w);	2540	wlist_add (&anfds[fd].head, (WL)w);
2211		2541
2212	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);	2542	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2213	w->events &= ~EV__IOFDSET;	2543	w->events &= ~EV__IOFDSET;
2214		2544
2215	EV_FREQUENT_CHECK;	2545	EV_FREQUENT_CHECK;
2216	}	2546	}
2217		2547
…		…
2279	timers [active] = timers [timercnt + HEAP0];	2609	timers [active] = timers [timercnt + HEAP0];
2280	adjustheap (timers, timercnt, active);	2610	adjustheap (timers, timercnt, active);
2281	}	2611	}
2282	}	2612	}
2283		2613
2284	EV_FREQUENT_CHECK;
2285
2286	ev_at (w) -= mn_now;	2614	ev_at (w) -= mn_now;
2287		2615
2288	ev_stop (EV_A_ (W)w);	2616	ev_stop (EV_A_ (W)w);
		2617
		2618	EV_FREQUENT_CHECK;
2289	}	2619	}
2290		2620
2291	void noinline	2621	void noinline
2292	ev_timer_again (EV_P_ ev_timer *w)	2622	ev_timer_again (EV_P_ ev_timer *w)
2293	{	2623	{
…		…
2311	}	2641	}
2312		2642
2313	EV_FREQUENT_CHECK;	2643	EV_FREQUENT_CHECK;
2314	}	2644	}
2315		2645
		2646	ev_tstamp
		2647	ev_timer_remaining (EV_P_ ev_timer *w)
		2648	{
		2649	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2650	}
		2651
2316	#if EV_PERIODIC_ENABLE	2652	#if EV_PERIODIC_ENABLE
2317	void noinline	2653	void noinline
2318	ev_periodic_start (EV_P_ ev_periodic *w)	2654	ev_periodic_start (EV_P_ ev_periodic *w)
2319	{	2655	{
2320	if (expect_false (ev_is_active (w)))	2656	if (expect_false (ev_is_active (w)))
…		…
2366	periodics [active] = periodics [periodiccnt + HEAP0];	2702	periodics [active] = periodics [periodiccnt + HEAP0];
2367	adjustheap (periodics, periodiccnt, active);	2703	adjustheap (periodics, periodiccnt, active);
2368	}	2704	}
2369	}	2705	}
2370		2706
2371	EV_FREQUENT_CHECK;
2372
2373	ev_stop (EV_A_ (W)w);	2707	ev_stop (EV_A_ (W)w);
		2708
		2709	EV_FREQUENT_CHECK;
2374	}	2710	}
2375		2711
2376	void noinline	2712	void noinline
2377	ev_periodic_again (EV_P_ ev_periodic *w)	2713	ev_periodic_again (EV_P_ ev_periodic *w)
2378	{	2714	{
…		…
2387	#endif	2723	#endif
2388		2724
2389	void noinline	2725	void noinline
2390	ev_signal_start (EV_P_ ev_signal *w)	2726	ev_signal_start (EV_P_ ev_signal *w)
2391	{	2727	{
2392	#if EV_MULTIPLICITY
2393	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2394	#endif
2395	if (expect_false (ev_is_active (w)))	2728	if (expect_false (ev_is_active (w)))
2396	return;	2729	return;
2397		2730
2398	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2731	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2399		2732
2400	evpipe_init (EV_A);	2733	#if EV_MULTIPLICITY
		2734	assert (("libev: a signal must not be attached to two different loops",
		2735	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2401		2736
2402	EV_FREQUENT_CHECK;	2737	signals [w->signum - 1].loop = EV_A;
		2738	#endif
2403		2739
		2740	EV_FREQUENT_CHECK;
		2741
		2742	#if EV_USE_SIGNALFD
		2743	if (sigfd == -2)
2404	{	2744	{
2405	#ifndef _WIN32	2745	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2406	sigset_t full, prev;	2746	if (sigfd < 0 && errno == EINVAL)
2407	sigfillset (&full);	2747	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2408	sigprocmask (SIG_SETMASK, &full, &prev);
2409	#endif
2410		2748
2411	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);	2749	if (sigfd >= 0)
		2750	{
		2751	fd_intern (sigfd); /* doing it twice will not hurt */
2412		2752
2413	#ifndef _WIN32	2753	sigemptyset (&sigfd_set);
2414	sigprocmask (SIG_SETMASK, &prev, 0);	2754
2415	#endif	2755	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2756	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2757	ev_io_start (EV_A_ &sigfd_w);
		2758	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2759	}
2416	}	2760	}
		2761
		2762	if (sigfd >= 0)
		2763	{
		2764	/* TODO: check .head */
		2765	sigaddset (&sigfd_set, w->signum);
		2766	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2767
		2768	signalfd (sigfd, &sigfd_set, 0);
		2769	}
		2770	#endif
2417		2771
2418	ev_start (EV_A_ (W)w, 1);	2772	ev_start (EV_A_ (W)w, 1);
2419	wlist_add (&signals [w->signum - 1].head, (WL)w);	2773	wlist_add (&signals [w->signum - 1].head, (WL)w);
2420		2774
2421	if (!((WL)w)->next)	2775	if (!((WL)w)->next)
		2776	# if EV_USE_SIGNALFD
		2777	if (sigfd < 0) /*TODO*/
		2778	# endif
2422	{	2779	{
2423	#if _WIN32	2780	# ifdef _WIN32
		2781	evpipe_init (EV_A);
		2782
2424	signal (w->signum, ev_sighandler);	2783	signal (w->signum, ev_sighandler);
2425	#else	2784	# else
2426	struct sigaction sa;	2785	struct sigaction sa;
		2786
		2787	evpipe_init (EV_A);
		2788
2427	sa.sa_handler = ev_sighandler;	2789	sa.sa_handler = ev_sighandler;
2428	sigfillset (&sa.sa_mask);	2790	sigfillset (&sa.sa_mask);
2429	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2791	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2430	sigaction (w->signum, &sa, 0);	2792	sigaction (w->signum, &sa, 0);
		2793
		2794	sigemptyset (&sa.sa_mask);
		2795	sigaddset (&sa.sa_mask, w->signum);
		2796	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2431	#endif	2797	#endif
2432	}	2798	}
2433		2799
2434	EV_FREQUENT_CHECK;	2800	EV_FREQUENT_CHECK;
2435	}	2801	}
2436		2802
2437	void noinline	2803	void noinline
…		…
2445		2811
2446	wlist_del (&signals [w->signum - 1].head, (WL)w);	2812	wlist_del (&signals [w->signum - 1].head, (WL)w);
2447	ev_stop (EV_A_ (W)w);	2813	ev_stop (EV_A_ (W)w);
2448		2814
2449	if (!signals [w->signum - 1].head)	2815	if (!signals [w->signum - 1].head)
		2816	{
		2817	#if EV_MULTIPLICITY
		2818	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2819	#endif
		2820	#if EV_USE_SIGNALFD
		2821	if (sigfd >= 0)
		2822	{
		2823	sigset_t ss;
		2824
		2825	sigemptyset (&ss);
		2826	sigaddset (&ss, w->signum);
		2827	sigdelset (&sigfd_set, w->signum);
		2828
		2829	signalfd (sigfd, &sigfd_set, 0);
		2830	sigprocmask (SIG_UNBLOCK, &ss, 0);
		2831	}
		2832	else
		2833	#endif
2450	signal (w->signum, SIG_DFL);	2834	signal (w->signum, SIG_DFL);
		2835	}
2451		2836
2452	EV_FREQUENT_CHECK;	2837	EV_FREQUENT_CHECK;
2453	}	2838	}
2454		2839
2455	void	2840	void
…		…
2496	#define MIN_STAT_INTERVAL 0.1074891	2881	#define MIN_STAT_INTERVAL 0.1074891
2497		2882
2498	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2883	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2499		2884
2500	#if EV_USE_INOTIFY	2885	#if EV_USE_INOTIFY
2501	# define EV_INOTIFY_BUFSIZE 8192	2886
		2887	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		2888	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2502		2889
2503	static void noinline	2890	static void noinline
2504	infy_add (EV_P_ ev_stat *w)	2891	infy_add (EV_P_ ev_stat *w)
2505	{	2892	{
2506	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);	2893	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);
2507		2894
2508	if (w->wd < 0)	2895	if (w->wd >= 0)
		2896	{
		2897	struct statfs sfs;
		2898
		2899	/* now local changes will be tracked by inotify, but remote changes won't */
		2900	/* unless the filesystem is known to be local, we therefore still poll */
		2901	/* also do poll on <2.6.25, but with normal frequency */
		2902
		2903	if (!fs_2625)
		2904	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2905	else if (!statfs (w->path, &sfs)
		2906	&& (sfs.f_type == 0x1373 /* devfs */
		2907	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2908	|| sfs.f_type == 0x3153464a /* jfs */
		2909	|| sfs.f_type == 0x52654973 /* reiser3 */
		2910	|| sfs.f_type == 0x01021994 /* tempfs */
		2911	|| sfs.f_type == 0x58465342 /* xfs */))
		2912	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2913	else
		2914	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2509	{	2915	}
		2916	else
		2917	{
		2918	/* can't use inotify, continue to stat */
2510	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	2919	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2511	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2512		2920
2513	/* monitor some parent directory for speedup hints */	2921	/* if path is not there, monitor some parent directory for speedup hints */
2514	/* note that exceeding the hardcoded path limit is not a correctness issue, */	2922	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2515	/* but an efficiency issue only */	2923	/* but an efficiency issue only */
2516	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2924	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2517	{	2925	{
2518	char path [4096];	2926	char path [4096];
…		…
2534	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2942	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2535	}	2943	}
2536	}	2944	}
2537		2945
2538	if (w->wd >= 0)	2946	if (w->wd >= 0)
2539	{
2540	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2947	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2541		2948
2542	/* now local changes will be tracked by inotify, but remote changes won't */	2949	/* now re-arm timer, if required */
2543	/* unless the filesystem it known to be local, we therefore still poll */	2950	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2544	/* also do poll on <2.6.25, but with normal frequency */
2545	struct statfs sfs;
2546
2547	if (fs_2625 && !statfs (w->path, &sfs))
2548	if (sfs.f_type == 0x1373 /* devfs */
2549	|| sfs.f_type == 0xEF53 /* ext2/3 */
2550	|| sfs.f_type == 0x3153464a /* jfs */
2551	|| sfs.f_type == 0x52654973 /* reiser3 */
2552	|| sfs.f_type == 0x01021994 /* tempfs */
2553	|| sfs.f_type == 0x58465342 /* xfs */)
2554	return;
2555
2556	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2557	ev_timer_again (EV_A_ &w->timer);	2951	ev_timer_again (EV_A_ &w->timer);
2558	}	2952	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2559	}	2953	}
2560		2954
2561	static void noinline	2955	static void noinline
2562	infy_del (EV_P_ ev_stat *w)	2956	infy_del (EV_P_ ev_stat *w)
2563	{	2957	{
…		…
2608		3002
2609	static void	3003	static void
2610	infy_cb (EV_P_ ev_io *w, int revents)	3004	infy_cb (EV_P_ ev_io *w, int revents)
2611	{	3005	{
2612	char buf [EV_INOTIFY_BUFSIZE];	3006	char buf [EV_INOTIFY_BUFSIZE];
2613	struct inotify_event *ev = (struct inotify_event *)buf;
2614	int ofs;	3007	int ofs;
2615	int len = read (fs_fd, buf, sizeof (buf));	3008	int len = read (fs_fd, buf, sizeof (buf));
2616		3009
2617	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	3010	for (ofs = 0; ofs < len; )
		3011	{
		3012	struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2618	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3013	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		3014	ofs += sizeof (struct inotify_event) + ev->len;
		3015	}
		3016	}
		3017
		3018	inline_size unsigned int
		3019	ev_linux_version (void)
		3020	{
		3021	struct utsname buf;
		3022	unsigned int v;
		3023	int i;
		3024	char *p = buf.release;
		3025
		3026	if (uname (&buf))
		3027	return 0;
		3028
		3029	for (i = 3+1; --i; )
		3030	{
		3031	unsigned int c = 0;
		3032
		3033	for (;;)
		3034	{
		3035	if (*p >= '0' && *p <= '9')
		3036	c = c * 10 + *p++ - '0';
		3037	else
		3038	{
		3039	p += *p == '.';
		3040	break;
		3041	}
		3042	}
		3043
		3044	v = (v << 8) | c;
		3045	}
		3046
		3047	return v;
2619	}	3048	}
2620		3049
2621	inline_size void	3050	inline_size void
2622	check_2625 (EV_P)	3051	ev_check_2625 (EV_P)
2623	{	3052	{
2624	/* kernels < 2.6.25 are borked	3053	/* kernels < 2.6.25 are borked
2625	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	3054	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2626	*/	3055	*/
2627	struct utsname buf;	3056	if (ev_linux_version () < 0x020619)
2628	int major, minor, micro;
2629
2630	if (uname (&buf))
2631	return;	3057	return;
2632		3058
2633	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2634	return;
2635
2636	if (major < 2
2637	|| (major == 2 && minor < 6)
2638	|| (major == 2 && minor == 6 && micro < 25))
2639	return;
2640
2641	fs_2625 = 1;	3059	fs_2625 = 1;
		3060	}
		3061
		3062	inline_size int
		3063	infy_newfd (void)
		3064	{
		3065	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3066	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3067	if (fd >= 0)
		3068	return fd;
		3069	#endif
		3070	return inotify_init ();
2642	}	3071	}
2643		3072
2644	inline_size void	3073	inline_size void
2645	infy_init (EV_P)	3074	infy_init (EV_P)
2646	{	3075	{
2647	if (fs_fd != -2)	3076	if (fs_fd != -2)
2648	return;	3077	return;
2649		3078
2650	fs_fd = -1;	3079	fs_fd = -1;
2651		3080
2652	check_2625 (EV_A);	3081	ev_check_2625 (EV_A);
2653		3082
2654	fs_fd = inotify_init ();	3083	fs_fd = infy_newfd ();
2655		3084
2656	if (fs_fd >= 0)	3085	if (fs_fd >= 0)
2657	{	3086	{
		3087	fd_intern (fs_fd);
2658	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3088	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2659	ev_set_priority (&fs_w, EV_MAXPRI);	3089	ev_set_priority (&fs_w, EV_MAXPRI);
2660	ev_io_start (EV_A_ &fs_w);	3090	ev_io_start (EV_A_ &fs_w);
		3091	ev_unref (EV_A);
2661	}	3092	}
2662	}	3093	}
2663		3094
2664	inline_size void	3095	inline_size void
2665	infy_fork (EV_P)	3096	infy_fork (EV_P)
…		…
2667	int slot;	3098	int slot;
2668		3099
2669	if (fs_fd < 0)	3100	if (fs_fd < 0)
2670	return;	3101	return;
2671		3102
		3103	ev_ref (EV_A);
		3104	ev_io_stop (EV_A_ &fs_w);
2672	close (fs_fd);	3105	close (fs_fd);
2673	fs_fd = inotify_init ();	3106	fs_fd = infy_newfd ();
		3107
		3108	if (fs_fd >= 0)
		3109	{
		3110	fd_intern (fs_fd);
		3111	ev_io_set (&fs_w, fs_fd, EV_READ);
		3112	ev_io_start (EV_A_ &fs_w);
		3113	ev_unref (EV_A);
		3114	}
2674		3115
2675	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3116	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2676	{	3117	{
2677	WL w_ = fs_hash [slot].head;	3118	WL w_ = fs_hash [slot].head;
2678	fs_hash [slot].head = 0;	3119	fs_hash [slot].head = 0;
…		…
2685	w->wd = -1;	3126	w->wd = -1;
2686		3127
2687	if (fs_fd >= 0)	3128	if (fs_fd >= 0)
2688	infy_add (EV_A_ w); /* re-add, no matter what */	3129	infy_add (EV_A_ w); /* re-add, no matter what */
2689	else	3130	else
		3131	{
		3132	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3133	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2690	ev_timer_again (EV_A_ &w->timer);	3134	ev_timer_again (EV_A_ &w->timer);
		3135	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3136	}
2691	}	3137	}
2692	}	3138	}
2693	}	3139	}
2694		3140
2695	#endif	3141	#endif
…		…
2712	static void noinline	3158	static void noinline
2713	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3159	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2714	{	3160	{
2715	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	3161	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2716		3162
2717	/* we copy this here each the time so that */	3163	ev_statdata prev = w->attr;
2718	/* prev has the old value when the callback gets invoked */
2719	w->prev = w->attr;
2720	ev_stat_stat (EV_A_ w);	3164	ev_stat_stat (EV_A_ w);
2721		3165
2722	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3166	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2723	if (	3167	if (
2724	w->prev.st_dev != w->attr.st_dev	3168	prev.st_dev != w->attr.st_dev
2725	|| w->prev.st_ino != w->attr.st_ino	3169	|| prev.st_ino != w->attr.st_ino
2726	|| w->prev.st_mode != w->attr.st_mode	3170	|| prev.st_mode != w->attr.st_mode
2727	|| w->prev.st_nlink != w->attr.st_nlink	3171	|| prev.st_nlink != w->attr.st_nlink
2728	|| w->prev.st_uid != w->attr.st_uid	3172	|| prev.st_uid != w->attr.st_uid
2729	|| w->prev.st_gid != w->attr.st_gid	3173	|| prev.st_gid != w->attr.st_gid
2730	|| w->prev.st_rdev != w->attr.st_rdev	3174	|| prev.st_rdev != w->attr.st_rdev
2731	|| w->prev.st_size != w->attr.st_size	3175	|| prev.st_size != w->attr.st_size
2732	|| w->prev.st_atime != w->attr.st_atime	3176	|| prev.st_atime != w->attr.st_atime
2733	|| w->prev.st_mtime != w->attr.st_mtime	3177	|| prev.st_mtime != w->attr.st_mtime
2734	|| w->prev.st_ctime != w->attr.st_ctime	3178	|| prev.st_ctime != w->attr.st_ctime
2735	) {	3179	) {
		3180	/* we only update w->prev on actual differences */
		3181	/* in case we test more often than invoke the callback, */
		3182	/* to ensure that prev is always different to attr */
		3183	w->prev = prev;
		3184
2736	#if EV_USE_INOTIFY	3185	#if EV_USE_INOTIFY
2737	if (fs_fd >= 0)	3186	if (fs_fd >= 0)
2738	{	3187	{
2739	infy_del (EV_A_ w);	3188	infy_del (EV_A_ w);
2740	infy_add (EV_A_ w);	3189	infy_add (EV_A_ w);
…		…
2765		3214
2766	if (fs_fd >= 0)	3215	if (fs_fd >= 0)
2767	infy_add (EV_A_ w);	3216	infy_add (EV_A_ w);
2768	else	3217	else
2769	#endif	3218	#endif
		3219	{
2770	ev_timer_again (EV_A_ &w->timer);	3220	ev_timer_again (EV_A_ &w->timer);
		3221	ev_unref (EV_A);
		3222	}
2771		3223
2772	ev_start (EV_A_ (W)w, 1);	3224	ev_start (EV_A_ (W)w, 1);
2773		3225
2774	EV_FREQUENT_CHECK;	3226	EV_FREQUENT_CHECK;
2775	}	3227	}
…		…
2784	EV_FREQUENT_CHECK;	3236	EV_FREQUENT_CHECK;
2785		3237
2786	#if EV_USE_INOTIFY	3238	#if EV_USE_INOTIFY
2787	infy_del (EV_A_ w);	3239	infy_del (EV_A_ w);
2788	#endif	3240	#endif
		3241
		3242	if (ev_is_active (&w->timer))
		3243	{
		3244	ev_ref (EV_A);
2789	ev_timer_stop (EV_A_ &w->timer);	3245	ev_timer_stop (EV_A_ &w->timer);
		3246	}
2790		3247
2791	ev_stop (EV_A_ (W)w);	3248	ev_stop (EV_A_ (W)w);
2792		3249
2793	EV_FREQUENT_CHECK;	3250	EV_FREQUENT_CHECK;
2794	}	3251	}
…		…
2935	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3392	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2936	{	3393	{
2937	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3394	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2938		3395
2939	{	3396	{
2940	struct ev_loop *loop = w->other;	3397	EV_P = w->other;
2941		3398
2942	while (fdchangecnt)	3399	while (fdchangecnt)
2943	{	3400	{
2944	fd_reify (EV_A);	3401	fd_reify (EV_A);
2945	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3402	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
2953	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));	3410	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2954		3411
2955	ev_embed_stop (EV_A_ w);	3412	ev_embed_stop (EV_A_ w);
2956		3413
2957	{	3414	{
2958	struct ev_loop *loop = w->other;	3415	EV_P = w->other;
2959		3416
2960	ev_loop_fork (EV_A);	3417	ev_loop_fork (EV_A);
2961	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3418	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2962	}	3419	}
2963		3420
…		…
2977	{	3434	{
2978	if (expect_false (ev_is_active (w)))	3435	if (expect_false (ev_is_active (w)))
2979	return;	3436	return;
2980		3437
2981	{	3438	{
2982	struct ev_loop *loop = w->other;	3439	EV_P = w->other;
2983	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3440	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2984	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3441	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2985	}	3442	}
2986		3443
2987	EV_FREQUENT_CHECK;	3444	EV_FREQUENT_CHECK;
…		…
3014		3471
3015	ev_io_stop (EV_A_ &w->io);	3472	ev_io_stop (EV_A_ &w->io);
3016	ev_prepare_stop (EV_A_ &w->prepare);	3473	ev_prepare_stop (EV_A_ &w->prepare);
3017	ev_fork_stop (EV_A_ &w->fork);	3474	ev_fork_stop (EV_A_ &w->fork);
3018		3475
		3476	ev_stop (EV_A_ (W)w);
		3477
3019	EV_FREQUENT_CHECK;	3478	EV_FREQUENT_CHECK;
3020	}	3479	}
3021	#endif	3480	#endif
3022		3481
3023	#if EV_FORK_ENABLE	3482	#if EV_FORK_ENABLE
…		…
3099		3558
3100	void	3559	void
3101	ev_async_send (EV_P_ ev_async *w)	3560	ev_async_send (EV_P_ ev_async *w)
3102	{	3561	{
3103	w->sent = 1;	3562	w->sent = 1;
3104	evpipe_write (EV_A_ &gotasync);	3563	evpipe_write (EV_A_ &async_pending);
3105	}	3564	}
3106	#endif	3565	#endif
3107		3566
3108	/*****************************************************************************/	3567	/*****************************************************************************/
3109		3568
…		…
3173	}	3632	}
3174	}	3633	}
3175		3634
3176	/*****************************************************************************/	3635	/*****************************************************************************/
3177		3636
3178	#if 0	3637	#if EV_WALK_ENABLE
3179	void	3638	void
3180	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))	3639	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3181	{	3640	{
3182	int i, j;	3641	int i, j;
3183	ev_watcher_list *wl, *wn;	3642	ev_watcher_list *wl, *wn;
…		…
3199	#if EV_USE_INOTIFY	3658	#if EV_USE_INOTIFY
3200	if (ev_cb ((ev_io *)wl) == infy_cb)	3659	if (ev_cb ((ev_io *)wl) == infy_cb)
3201	;	3660	;
3202	else	3661	else
3203	#endif	3662	#endif
3204	if ((ev_io *)wl != &pipeev)	3663	if ((ev_io *)wl != &pipe_w)
3205	if (types & EV_IO)	3664	if (types & EV_IO)
3206	cb (EV_A_ EV_IO, wl);	3665	cb (EV_A_ EV_IO, wl);
3207		3666
3208	wl = wn;	3667	wl = wn;
3209	}	3668	}
…		…
3258	if (types & EV_CHECK)	3717	if (types & EV_CHECK)
3259	for (i = checkcnt; i--; )	3718	for (i = checkcnt; i--; )
3260	cb (EV_A_ EV_CHECK, checks [i]);	3719	cb (EV_A_ EV_CHECK, checks [i]);
3261		3720
3262	if (types & EV_SIGNAL)	3721	if (types & EV_SIGNAL)
3263	for (i = 0; i < signalmax; ++i)	3722	for (i = 0; i < EV_NSIG - 1; ++i)
3264	for (wl = signals [i].head; wl; )	3723	for (wl = signals [i].head; wl; )
3265	{	3724	{
3266	wn = wl->next;	3725	wn = wl->next;
3267	cb (EV_A_ EV_SIGNAL, wl);	3726	cb (EV_A_ EV_SIGNAL, wl);
3268	wl = wn;	3727	wl = wn;

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