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Comparing libev/ev.c (file contents):
Revision 1.286 by root, Wed Apr 15 19:37:15 2009 UTC vs.
Revision 1.334 by root, Tue Mar 9 09:00:59 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 *
442	ev_realloc_emul (void *ptr, long size)	571	ev_realloc_emul (void *ptr, long size)
443	{	572	{
		573	#if __GLIBC__
		574	return realloc (ptr, size);
		575	#else
444	/* some systems, notably openbsd and darwin, fail to properly	576	/* some systems, notably openbsd and darwin, fail to properly
445	* implement realloc (x, 0) (as required by both ansi c-98 and	577	* implement realloc (x, 0) (as required by both ansi c-98 and
446	* the single unix specification, so work around them here.	578	* the single unix specification, so work around them here.
447	*/	579	*/
448		580
449	if (size)	581	if (size)
450	return realloc (ptr, size);	582	return realloc (ptr, size);
451		583
452	free (ptr);	584	free (ptr);
453	return 0;	585	return 0;
		586	#endif
454	}	587	}
455		588
456	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;	589	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
457		590
458	void	591	void
…		…
466	{	599	{
467	ptr = alloc (ptr, size);	600	ptr = alloc (ptr, size);
468		601
469	if (!ptr && size)	602	if (!ptr && size)
470	{	603	{
		604	#if EV_AVOID_STDIO
		605	ev_printerr ("libev: memory allocation failed, aborting.\n");
		606	#else
471	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	607	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		608	#endif
472	abort ();	609	abort ();
473	}	610	}
474		611
475	return ptr;	612	return ptr;
476	}	613	}
…		…
478	#define ev_malloc(size) ev_realloc (0, (size))	615	#define ev_malloc(size) ev_realloc (0, (size))
479	#define ev_free(ptr) ev_realloc ((ptr), 0)	616	#define ev_free(ptr) ev_realloc ((ptr), 0)
480		617
481	/*****************************************************************************/	618	/*****************************************************************************/
482		619
		620	/* set in reify when reification needed */
		621	#define EV_ANFD_REIFY 1
		622
		623	/* file descriptor info structure */
483	typedef struct	624	typedef struct
484	{	625	{
485	WL head;	626	WL head;
486	unsigned char events;	627	unsigned char events; /* the events watched for */
487	unsigned char reify;	628	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 */	629	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489	unsigned char unused;	630	unsigned char unused;
490	#if EV_USE_EPOLL	631	#if EV_USE_EPOLL
491	unsigned int egen; /* generation counter to counter epoll bugs */	632	unsigned int egen; /* generation counter to counter epoll bugs */
492	#endif	633	#endif
493	#if EV_SELECT_IS_WINSOCKET	634	#if EV_SELECT_IS_WINSOCKET
494	SOCKET handle;	635	SOCKET handle;
495	#endif	636	#endif
496	} ANFD;	637	} ANFD;
497		638
		639	/* stores the pending event set for a given watcher */
498	typedef struct	640	typedef struct
499	{	641	{
500	W w;	642	W w;
501	int events;	643	int events; /* the pending event set for the given watcher */
502	} ANPENDING;	644	} ANPENDING;
503		645
504	#if EV_USE_INOTIFY	646	#if EV_USE_INOTIFY
505	/* hash table entry per inotify-id */	647	/* hash table entry per inotify-id */
506	typedef struct	648	typedef struct
…		…
509	} ANFS;	651	} ANFS;
510	#endif	652	#endif
511		653
512	/* Heap Entry */	654	/* Heap Entry */
513	#if EV_HEAP_CACHE_AT	655	#if EV_HEAP_CACHE_AT
		656	/* a heap element */
514	typedef struct {	657	typedef struct {
515	ev_tstamp at;	658	ev_tstamp at;
516	WT w;	659	WT w;
517	} ANHE;	660	} ANHE;
518		661
519	#define ANHE_w(he) (he).w /* access watcher, read-write */	662	#define ANHE_w(he) (he).w /* access watcher, read-write */
520	#define ANHE_at(he) (he).at /* access cached at, read-only */	663	#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 */	664	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522	#else	665	#else
		666	/* a heap element */
523	typedef WT ANHE;	667	typedef WT ANHE;
524		668
525	#define ANHE_w(he) (he)	669	#define ANHE_w(he) (he)
526	#define ANHE_at(he) (he)->at	670	#define ANHE_at(he) (he)->at
527	#define ANHE_at_cache(he)	671	#define ANHE_at_cache(he)
…		…
551		695
552	static int ev_default_loop_ptr;	696	static int ev_default_loop_ptr;
553		697
554	#endif	698	#endif
555		699
		700	#if EV_MINIMAL < 2
		701	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		702	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		703	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		704	#else
		705	# define EV_RELEASE_CB (void)0
		706	# define EV_ACQUIRE_CB (void)0
		707	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		708	#endif
		709
		710	#define EVUNLOOP_RECURSE 0x80
		711
556	/*****************************************************************************/	712	/*****************************************************************************/
557		713
		714	#ifndef EV_HAVE_EV_TIME
558	ev_tstamp	715	ev_tstamp
559	ev_time (void)	716	ev_time (void)
560	{	717	{
561	#if EV_USE_REALTIME	718	#if EV_USE_REALTIME
562	if (expect_true (have_realtime))	719	if (expect_true (have_realtime))
…		…
569		726
570	struct timeval tv;	727	struct timeval tv;
571	gettimeofday (&tv, 0);	728	gettimeofday (&tv, 0);
572	return tv.tv_sec + tv.tv_usec * 1e-6;	729	return tv.tv_sec + tv.tv_usec * 1e-6;
573	}	730	}
		731	#endif
574		732
575	inline_size ev_tstamp	733	inline_size ev_tstamp
576	get_clock (void)	734	get_clock (void)
577	{	735	{
578	#if EV_USE_MONOTONIC	736	#if EV_USE_MONOTONIC
…		…
614		772
615	tv.tv_sec = (time_t)delay;	773	tv.tv_sec = (time_t)delay;
616	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	774	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
617		775
618	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	776	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619	/* somehting nto guaranteed by newer posix versions, but guaranteed */	777	/* something not guaranteed by newer posix versions, but guaranteed */
620	/* by older ones */	778	/* by older ones */
621	select (0, 0, 0, 0, &tv);	779	select (0, 0, 0, 0, &tv);
622	#endif	780	#endif
623	}	781	}
624	}	782	}
625		783
626	/*****************************************************************************/	784	/*****************************************************************************/
627		785
628	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	786	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629		787
		788	/* find a suitable new size for the given array, */
		789	/* hopefully by rounding to a ncie-to-malloc size */
630	inline_size int	790	inline_size int
631	array_nextsize (int elem, int cur, int cnt)	791	array_nextsize (int elem, int cur, int cnt)
632	{	792	{
633	int ncur = cur + 1;	793	int ncur = cur + 1;
634		794
…		…
680	#define array_free(stem, idx) \	840	#define array_free(stem, idx) \
681	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0	841	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682		842
683	/*****************************************************************************/	843	/*****************************************************************************/
684		844
		845	/* dummy callback for pending events */
		846	static void noinline
		847	pendingcb (EV_P_ ev_prepare *w, int revents)
		848	{
		849	}
		850
685	void noinline	851	void noinline
686	ev_feed_event (EV_P_ void *w, int revents)	852	ev_feed_event (EV_P_ void *w, int revents)
687	{	853	{
688	W w_ = (W)w;	854	W w_ = (W)w;
689	int pri = ABSPRI (w_);	855	int pri = ABSPRI (w_);
…		…
724	}	890	}
725		891
726	/*****************************************************************************/	892	/*****************************************************************************/
727		893
728	inline_speed void	894	inline_speed void
729	fd_event (EV_P_ int fd, int revents)	895	fd_event_nc (EV_P_ int fd, int revents)
730	{	896	{
731	ANFD *anfd = anfds + fd;	897	ANFD *anfd = anfds + fd;
732	ev_io *w;	898	ev_io *w;
733		899
734	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	900	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
738	if (ev)	904	if (ev)
739	ev_feed_event (EV_A_ (W)w, ev);	905	ev_feed_event (EV_A_ (W)w, ev);
740	}	906	}
741	}	907	}
742		908
		909	/* do not submit kernel events for fds that have reify set */
		910	/* because that means they changed while we were polling for new events */
		911	inline_speed void
		912	fd_event (EV_P_ int fd, int revents)
		913	{
		914	ANFD *anfd = anfds + fd;
		915
		916	if (expect_true (!anfd->reify))
		917	fd_event_nc (EV_A_ fd, revents);
		918	}
		919
743	void	920	void
744	ev_feed_fd_event (EV_P_ int fd, int revents)	921	ev_feed_fd_event (EV_P_ int fd, int revents)
745	{	922	{
746	if (fd >= 0 && fd < anfdmax)	923	if (fd >= 0 && fd < anfdmax)
747	fd_event (EV_A_ fd, revents);	924	fd_event_nc (EV_A_ fd, revents);
748	}	925	}
749		926
		927	/* make sure the external fd watch events are in-sync */
		928	/* with the kernel/libev internal state */
750	inline_size void	929	inline_size void
751	fd_reify (EV_P)	930	fd_reify (EV_P)
752	{	931	{
753	int i;	932	int i;
754		933
…		…
765		944
766	#if EV_SELECT_IS_WINSOCKET	945	#if EV_SELECT_IS_WINSOCKET
767	if (events)	946	if (events)
768	{	947	{
769	unsigned long arg;	948	unsigned long arg;
770	#ifdef EV_FD_TO_WIN32_HANDLE
771	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	949	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));	950	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
776	}	951	}
777	#endif	952	#endif
778		953
779	{	954	{
…		…
789	}	964	}
790		965
791	fdchangecnt = 0;	966	fdchangecnt = 0;
792	}	967	}
793		968
		969	/* something about the given fd changed */
794	inline_size void	970	inline_size void
795	fd_change (EV_P_ int fd, int flags)	971	fd_change (EV_P_ int fd, int flags)
796	{	972	{
797	unsigned char reify = anfds [fd].reify;	973	unsigned char reify = anfds [fd].reify;
798	anfds [fd].reify |= flags;	974	anfds [fd].reify |= flags;
…		…
803	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	979	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
804	fdchanges [fdchangecnt - 1] = fd;	980	fdchanges [fdchangecnt - 1] = fd;
805	}	981	}
806	}	982	}
807		983
		984	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
808	inline_speed void	985	inline_speed void
809	fd_kill (EV_P_ int fd)	986	fd_kill (EV_P_ int fd)
810	{	987	{
811	ev_io *w;	988	ev_io *w;
812		989
…		…
815	ev_io_stop (EV_A_ w);	992	ev_io_stop (EV_A_ w);
816	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	993	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
817	}	994	}
818	}	995	}
819		996
		997	/* check whether the given fd is atcually valid, for error recovery */
820	inline_size int	998	inline_size int
821	fd_valid (int fd)	999	fd_valid (int fd)
822	{	1000	{
823	#ifdef _WIN32	1001	#ifdef _WIN32
824	return _get_osfhandle (fd) != -1;	1002	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
825	#else	1003	#else
826	return fcntl (fd, F_GETFD) != -1;	1004	return fcntl (fd, F_GETFD) != -1;
827	#endif	1005	#endif
828	}	1006	}
829		1007
…		…
847		1025
848	for (fd = anfdmax; fd--; )	1026	for (fd = anfdmax; fd--; )
849	if (anfds [fd].events)	1027	if (anfds [fd].events)
850	{	1028	{
851	fd_kill (EV_A_ fd);	1029	fd_kill (EV_A_ fd);
852	return;	1030	break;
853	}	1031	}
854	}	1032	}
855		1033
856	/* usually called after fork if backend needs to re-arm all fds from scratch */	1034	/* usually called after fork if backend needs to re-arm all fds from scratch */
857	static void noinline	1035	static void noinline
…		…
862	for (fd = 0; fd < anfdmax; ++fd)	1040	for (fd = 0; fd < anfdmax; ++fd)
863	if (anfds [fd].events)	1041	if (anfds [fd].events)
864	{	1042	{
865	anfds [fd].events = 0;	1043	anfds [fd].events = 0;
866	anfds [fd].emask = 0;	1044	anfds [fd].emask = 0;
867	fd_change (EV_A_ fd, EV__IOFDSET | 1);	1045	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
868	}	1046	}
869	}	1047	}
870		1048
871	/*****************************************************************************/	1049	/*****************************************************************************/
872		1050
…		…
947		1125
948	for (;;)	1126	for (;;)
949	{	1127	{
950	int c = k << 1;	1128	int c = k << 1;
951		1129
952	if (c > N + HEAP0 - 1)	1130	if (c >= N + HEAP0)
953	break;	1131	break;
954		1132
955	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1133	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
956	? 1 : 0;	1134	? 1 : 0;
957		1135
…		…
989		1167
990	heap [k] = he;	1168	heap [k] = he;
991	ev_active (ANHE_w (he)) = k;	1169	ev_active (ANHE_w (he)) = k;
992	}	1170	}
993		1171
		1172	/* move an element suitably so it is in a correct place */
994	inline_size void	1173	inline_size void
995	adjustheap (ANHE *heap, int N, int k)	1174	adjustheap (ANHE *heap, int N, int k)
996	{	1175	{
997	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1176	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
998	upheap (heap, k);	1177	upheap (heap, k);
999	else	1178	else
1000	downheap (heap, N, k);	1179	downheap (heap, N, k);
1001	}	1180	}
1002		1181
…		…
1012	upheap (heap, i + HEAP0);	1191	upheap (heap, i + HEAP0);
1013	}	1192	}
1014		1193
1015	/*****************************************************************************/	1194	/*****************************************************************************/
1016		1195
		1196	/* associate signal watchers to a signal signal */
1017	typedef struct	1197	typedef struct
1018	{	1198	{
		1199	EV_ATOMIC_T pending;
		1200	#if EV_MULTIPLICITY
		1201	EV_P;
		1202	#endif
1019	WL head;	1203	WL head;
1020	EV_ATOMIC_T gotsig;
1021	} ANSIG;	1204	} ANSIG;
1022		1205
1023	static ANSIG *signals;	1206	static ANSIG signals [EV_NSIG - 1];
1024	static int signalmax;
1025
1026	static EV_ATOMIC_T gotsig;
1027		1207
1028	/*****************************************************************************/	1208	/*****************************************************************************/
1029		1209
		1210	/* used to prepare libev internal fd's */
		1211	/* this is not fork-safe */
1030	inline_speed void	1212	inline_speed void
1031	fd_intern (int fd)	1213	fd_intern (int fd)
1032	{	1214	{
1033	#ifdef _WIN32	1215	#ifdef _WIN32
1034	unsigned long arg = 1;	1216	unsigned long arg = 1;
1035	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1217	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1036	#else	1218	#else
1037	fcntl (fd, F_SETFD, FD_CLOEXEC);	1219	fcntl (fd, F_SETFD, FD_CLOEXEC);
1038	fcntl (fd, F_SETFL, O_NONBLOCK);	1220	fcntl (fd, F_SETFL, O_NONBLOCK);
1039	#endif	1221	#endif
1040	}	1222	}
1041		1223
1042	static void noinline	1224	static void noinline
1043	evpipe_init (EV_P)	1225	evpipe_init (EV_P)
1044	{	1226	{
1045	if (!ev_is_active (&pipeev))	1227	if (!ev_is_active (&pipe_w))
1046	{	1228	{
1047	#if EV_USE_EVENTFD	1229	#if EV_USE_EVENTFD
		1230	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1231	if (evfd < 0 && errno == EINVAL)
1048	if ((evfd = eventfd (0, 0)) >= 0)	1232	evfd = eventfd (0, 0);
		1233
		1234	if (evfd >= 0)
1049	{	1235	{
1050	evpipe [0] = -1;	1236	evpipe [0] = -1;
1051	fd_intern (evfd);	1237	fd_intern (evfd); /* doing it twice doesn't hurt */
1052	ev_io_set (&pipeev, evfd, EV_READ);	1238	ev_io_set (&pipe_w, evfd, EV_READ);
1053	}	1239	}
1054	else	1240	else
1055	#endif	1241	#endif
1056	{	1242	{
1057	while (pipe (evpipe))	1243	while (pipe (evpipe))
1058	ev_syserr ("(libev) error creating signal/async pipe");	1244	ev_syserr ("(libev) error creating signal/async pipe");
1059		1245
1060	fd_intern (evpipe [0]);	1246	fd_intern (evpipe [0]);
1061	fd_intern (evpipe [1]);	1247	fd_intern (evpipe [1]);
1062	ev_io_set (&pipeev, evpipe [0], EV_READ);	1248	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1063	}	1249	}
1064		1250
1065	ev_io_start (EV_A_ &pipeev);	1251	ev_io_start (EV_A_ &pipe_w);
1066	ev_unref (EV_A); /* watcher should not keep loop alive */	1252	ev_unref (EV_A); /* watcher should not keep loop alive */
1067	}	1253	}
1068	}	1254	}
1069		1255
1070	inline_size void	1256	inline_size void
…		…
1088		1274
1089	errno = old_errno;	1275	errno = old_errno;
1090	}	1276	}
1091	}	1277	}
1092		1278
		1279	/* called whenever the libev signal pipe */
		1280	/* got some events (signal, async) */
1093	static void	1281	static void
1094	pipecb (EV_P_ ev_io *iow, int revents)	1282	pipecb (EV_P_ ev_io *iow, int revents)
1095	{	1283	{
		1284	int i;
		1285
1096	#if EV_USE_EVENTFD	1286	#if EV_USE_EVENTFD
1097	if (evfd >= 0)	1287	if (evfd >= 0)
1098	{	1288	{
1099	uint64_t counter;	1289	uint64_t counter;
1100	read (evfd, &counter, sizeof (uint64_t));	1290	read (evfd, &counter, sizeof (uint64_t));
…		…
1104	{	1294	{
1105	char dummy;	1295	char dummy;
1106	read (evpipe [0], &dummy, 1);	1296	read (evpipe [0], &dummy, 1);
1107	}	1297	}
1108		1298
1109	if (gotsig && ev_is_default_loop (EV_A))	1299	if (sig_pending)
1110	{	1300	{
1111	int signum;	1301	sig_pending = 0;
1112	gotsig = 0;
1113		1302
1114	for (signum = signalmax; signum--; )	1303	for (i = EV_NSIG - 1; i--; )
1115	if (signals [signum].gotsig)	1304	if (expect_false (signals [i].pending))
1116	ev_feed_signal_event (EV_A_ signum + 1);	1305	ev_feed_signal_event (EV_A_ i + 1);
1117	}	1306	}
1118		1307
1119	#if EV_ASYNC_ENABLE	1308	#if EV_ASYNC_ENABLE
1120	if (gotasync)	1309	if (async_pending)
1121	{	1310	{
1122	int i;	1311	async_pending = 0;
1123	gotasync = 0;
1124		1312
1125	for (i = asynccnt; i--; )	1313	for (i = asynccnt; i--; )
1126	if (asyncs [i]->sent)	1314	if (asyncs [i]->sent)
1127	{	1315	{
1128	asyncs [i]->sent = 0;	1316	asyncs [i]->sent = 0;
…		…
1136		1324
1137	static void	1325	static void
1138	ev_sighandler (int signum)	1326	ev_sighandler (int signum)
1139	{	1327	{
1140	#if EV_MULTIPLICITY	1328	#if EV_MULTIPLICITY
1141	struct ev_loop *loop = &default_loop_struct;	1329	EV_P = signals [signum - 1].loop;
1142	#endif	1330	#endif
1143		1331
1144	#if _WIN32	1332	#ifdef _WIN32
1145	signal (signum, ev_sighandler);	1333	signal (signum, ev_sighandler);
1146	#endif	1334	#endif
1147		1335
1148	signals [signum - 1].gotsig = 1;	1336	signals [signum - 1].pending = 1;
1149	evpipe_write (EV_A_ &gotsig);	1337	evpipe_write (EV_A_ &sig_pending);
1150	}	1338	}
1151		1339
1152	void noinline	1340	void noinline
1153	ev_feed_signal_event (EV_P_ int signum)	1341	ev_feed_signal_event (EV_P_ int signum)
1154	{	1342	{
1155	WL w;	1343	WL w;
1156		1344
		1345	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1346	return;
		1347
		1348	--signum;
		1349
1157	#if EV_MULTIPLICITY	1350	#if EV_MULTIPLICITY
1158	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1351	/* it is permissible to try to feed a signal to the wrong loop */
1159	#endif	1352	/* or, likely more useful, feeding a signal nobody is waiting for */
1160		1353
1161	--signum;	1354	if (expect_false (signals [signum].loop != EV_A))
1162
1163	if (signum < 0 || signum >= signalmax)
1164	return;	1355	return;
		1356	#endif
1165		1357
1166	signals [signum].gotsig = 0;	1358	signals [signum].pending = 0;
1167		1359
1168	for (w = signals [signum].head; w; w = w->next)	1360	for (w = signals [signum].head; w; w = w->next)
1169	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1361	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1170	}	1362	}
1171		1363
		1364	#if EV_USE_SIGNALFD
		1365	static void
		1366	sigfdcb (EV_P_ ev_io *iow, int revents)
		1367	{
		1368	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1369
		1370	for (;;)
		1371	{
		1372	ssize_t res = read (sigfd, si, sizeof (si));
		1373
		1374	/* not ISO-C, as res might be -1, but works with SuS */
		1375	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1376	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1377
		1378	if (res < (ssize_t)sizeof (si))
		1379	break;
		1380	}
		1381	}
		1382	#endif
		1383
1172	/*****************************************************************************/	1384	/*****************************************************************************/
1173		1385
1174	static WL childs [EV_PID_HASHSIZE];	1386	static WL childs [EV_PID_HASHSIZE];
1175		1387
1176	#ifndef _WIN32	1388	#ifndef _WIN32
…		…
1179		1391
1180	#ifndef WIFCONTINUED	1392	#ifndef WIFCONTINUED
1181	# define WIFCONTINUED(status) 0	1393	# define WIFCONTINUED(status) 0
1182	#endif	1394	#endif
1183		1395
		1396	/* handle a single child status event */
1184	inline_speed void	1397	inline_speed void
1185	child_reap (EV_P_ int chain, int pid, int status)	1398	child_reap (EV_P_ int chain, int pid, int status)
1186	{	1399	{
1187	ev_child *w;	1400	ev_child *w;
1188	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1401	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
…		…
1202		1415
1203	#ifndef WCONTINUED	1416	#ifndef WCONTINUED
1204	# define WCONTINUED 0	1417	# define WCONTINUED 0
1205	#endif	1418	#endif
1206		1419
		1420	/* called on sigchld etc., calls waitpid */
1207	static void	1421	static void
1208	childcb (EV_P_ ev_signal *sw, int revents)	1422	childcb (EV_P_ ev_signal *sw, int revents)
1209	{	1423	{
1210	int pid, status;	1424	int pid, status;
1211		1425
…		…
1318	ev_backend (EV_P)	1532	ev_backend (EV_P)
1319	{	1533	{
1320	return backend;	1534	return backend;
1321	}	1535	}
1322		1536
		1537	#if EV_MINIMAL < 2
1323	unsigned int	1538	unsigned int
1324	ev_loop_count (EV_P)	1539	ev_loop_count (EV_P)
1325	{	1540	{
1326	return loop_count;	1541	return loop_count;
1327	}	1542	}
1328		1543
		1544	unsigned int
		1545	ev_loop_depth (EV_P)
		1546	{
		1547	return loop_depth;
		1548	}
		1549
1329	void	1550	void
1330	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1551	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1331	{	1552	{
1332	io_blocktime = interval;	1553	io_blocktime = interval;
1333	}	1554	}
…		…
1336	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1557	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1337	{	1558	{
1338	timeout_blocktime = interval;	1559	timeout_blocktime = interval;
1339	}	1560	}
1340		1561
		1562	void
		1563	ev_set_userdata (EV_P_ void *data)
		1564	{
		1565	userdata = data;
		1566	}
		1567
		1568	void *
		1569	ev_userdata (EV_P)
		1570	{
		1571	return userdata;
		1572	}
		1573
		1574	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1575	{
		1576	invoke_cb = invoke_pending_cb;
		1577	}
		1578
		1579	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1580	{
		1581	release_cb = release;
		1582	acquire_cb = acquire;
		1583	}
		1584	#endif
		1585
		1586	/* initialise a loop structure, must be zero-initialised */
1341	static void noinline	1587	static void noinline
1342	loop_init (EV_P_ unsigned int flags)	1588	loop_init (EV_P_ unsigned int flags)
1343	{	1589	{
1344	if (!backend)	1590	if (!backend)
1345	{	1591	{
…		…
1361	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1607	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1362	have_monotonic = 1;	1608	have_monotonic = 1;
1363	}	1609	}
1364	#endif	1610	#endif
1365		1611
		1612	/* pid check not overridable via env */
		1613	#ifndef _WIN32
		1614	if (flags & EVFLAG_FORKCHECK)
		1615	curpid = getpid ();
		1616	#endif
		1617
		1618	if (!(flags & EVFLAG_NOENV)
		1619	&& !enable_secure ()
		1620	&& getenv ("LIBEV_FLAGS"))
		1621	flags = atoi (getenv ("LIBEV_FLAGS"));
		1622
1366	ev_rt_now = ev_time ();	1623	ev_rt_now = ev_time ();
1367	mn_now = get_clock ();	1624	mn_now = get_clock ();
1368	now_floor = mn_now;	1625	now_floor = mn_now;
1369	rtmn_diff = ev_rt_now - mn_now;	1626	rtmn_diff = ev_rt_now - mn_now;
		1627	#if EV_MINIMAL < 2
		1628	invoke_cb = ev_invoke_pending;
		1629	#endif
1370		1630
1371	io_blocktime = 0.;	1631	io_blocktime = 0.;
1372	timeout_blocktime = 0.;	1632	timeout_blocktime = 0.;
1373	backend = 0;	1633	backend = 0;
1374	backend_fd = -1;	1634	backend_fd = -1;
1375	gotasync = 0;	1635	sig_pending = 0;
		1636	#if EV_ASYNC_ENABLE
		1637	async_pending = 0;
		1638	#endif
1376	#if EV_USE_INOTIFY	1639	#if EV_USE_INOTIFY
1377	fs_fd = -2;	1640	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1378	#endif	1641	#endif
1379		1642	#if EV_USE_SIGNALFD
1380	/* pid check not overridable via env */	1643	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1381	#ifndef _WIN32
1382	if (flags & EVFLAG_FORKCHECK)
1383	curpid = getpid ();
1384	#endif	1644	#endif
1385
1386	if (!(flags & EVFLAG_NOENV)
1387	&& !enable_secure ()
1388	&& getenv ("LIBEV_FLAGS"))
1389	flags = atoi (getenv ("LIBEV_FLAGS"));
1390		1645
1391	if (!(flags & 0x0000ffffU))	1646	if (!(flags & 0x0000ffffU))
1392	flags |= ev_recommended_backends ();	1647	flags |= ev_recommended_backends ();
1393		1648
1394	#if EV_USE_PORT	1649	#if EV_USE_PORT
…		…
1405	#endif	1660	#endif
1406	#if EV_USE_SELECT	1661	#if EV_USE_SELECT
1407	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1662	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1408	#endif	1663	#endif
1409		1664
		1665	ev_prepare_init (&pending_w, pendingcb);
		1666
1410	ev_init (&pipeev, pipecb);	1667	ev_init (&pipe_w, pipecb);
1411	ev_set_priority (&pipeev, EV_MAXPRI);	1668	ev_set_priority (&pipe_w, EV_MAXPRI);
1412	}	1669	}
1413	}	1670	}
1414		1671
		1672	/* free up a loop structure */
1415	static void noinline	1673	static void noinline
1416	loop_destroy (EV_P)	1674	loop_destroy (EV_P)
1417	{	1675	{
1418	int i;	1676	int i;
1419		1677
1420	if (ev_is_active (&pipeev))	1678	if (ev_is_active (&pipe_w))
1421	{	1679	{
1422	ev_ref (EV_A); /* signal watcher */	1680	/*ev_ref (EV_A);*/
1423	ev_io_stop (EV_A_ &pipeev);	1681	/*ev_io_stop (EV_A_ &pipe_w);*/
1424		1682
1425	#if EV_USE_EVENTFD	1683	#if EV_USE_EVENTFD
1426	if (evfd >= 0)	1684	if (evfd >= 0)
1427	close (evfd);	1685	close (evfd);
1428	#endif	1686	#endif
1429		1687
1430	if (evpipe [0] >= 0)	1688	if (evpipe [0] >= 0)
1431	{	1689	{
1432	close (evpipe [0]);	1690	EV_WIN32_CLOSE_FD (evpipe [0]);
1433	close (evpipe [1]);	1691	EV_WIN32_CLOSE_FD (evpipe [1]);
1434	}	1692	}
1435	}	1693	}
		1694
		1695	#if EV_USE_SIGNALFD
		1696	if (ev_is_active (&sigfd_w))
		1697	close (sigfd);
		1698	#endif
1436		1699
1437	#if EV_USE_INOTIFY	1700	#if EV_USE_INOTIFY
1438	if (fs_fd >= 0)	1701	if (fs_fd >= 0)
1439	close (fs_fd);	1702	close (fs_fd);
1440	#endif	1703	#endif
…		…
1464	#if EV_IDLE_ENABLE	1727	#if EV_IDLE_ENABLE
1465	array_free (idle, [i]);	1728	array_free (idle, [i]);
1466	#endif	1729	#endif
1467	}	1730	}
1468		1731
1469	ev_free (anfds); anfdmax = 0;	1732	ev_free (anfds); anfds = 0; anfdmax = 0;
1470		1733
1471	/* have to use the microsoft-never-gets-it-right macro */	1734	/* have to use the microsoft-never-gets-it-right macro */
1472	array_free (rfeed, EMPTY);	1735	array_free (rfeed, EMPTY);
1473	array_free (fdchange, EMPTY);	1736	array_free (fdchange, EMPTY);
1474	array_free (timer, EMPTY);	1737	array_free (timer, EMPTY);
…		…
1505	#endif	1768	#endif
1506	#if EV_USE_INOTIFY	1769	#if EV_USE_INOTIFY
1507	infy_fork (EV_A);	1770	infy_fork (EV_A);
1508	#endif	1771	#endif
1509		1772
1510	if (ev_is_active (&pipeev))	1773	if (ev_is_active (&pipe_w))
1511	{	1774	{
1512	/* this "locks" the handlers against writing to the pipe */	1775	/* this "locks" the handlers against writing to the pipe */
1513	/* while we modify the fd vars */	1776	/* while we modify the fd vars */
1514	gotsig = 1;	1777	sig_pending = 1;
1515	#if EV_ASYNC_ENABLE	1778	#if EV_ASYNC_ENABLE
1516	gotasync = 1;	1779	async_pending = 1;
1517	#endif	1780	#endif
1518		1781
1519	ev_ref (EV_A);	1782	ev_ref (EV_A);
1520	ev_io_stop (EV_A_ &pipeev);	1783	ev_io_stop (EV_A_ &pipe_w);
1521		1784
1522	#if EV_USE_EVENTFD	1785	#if EV_USE_EVENTFD
1523	if (evfd >= 0)	1786	if (evfd >= 0)
1524	close (evfd);	1787	close (evfd);
1525	#endif	1788	#endif
1526		1789
1527	if (evpipe [0] >= 0)	1790	if (evpipe [0] >= 0)
1528	{	1791	{
1529	close (evpipe [0]);	1792	EV_WIN32_CLOSE_FD (evpipe [0]);
1530	close (evpipe [1]);	1793	EV_WIN32_CLOSE_FD (evpipe [1]);
1531	}	1794	}
1532		1795
1533	evpipe_init (EV_A);	1796	evpipe_init (EV_A);
1534	/* now iterate over everything, in case we missed something */	1797	/* now iterate over everything, in case we missed something */
1535	pipecb (EV_A_ &pipeev, EV_READ);	1798	pipecb (EV_A_ &pipe_w, EV_READ);
1536	}	1799	}
1537		1800
1538	postfork = 0;	1801	postfork = 0;
1539	}	1802	}
1540		1803
1541	#if EV_MULTIPLICITY	1804	#if EV_MULTIPLICITY
1542		1805
1543	struct ev_loop *	1806	struct ev_loop *
1544	ev_loop_new (unsigned int flags)	1807	ev_loop_new (unsigned int flags)
1545	{	1808	{
1546	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1809	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1547		1810
1548	memset (loop, 0, sizeof (struct ev_loop));	1811	memset (EV_A, 0, sizeof (struct ev_loop));
1549
1550	loop_init (EV_A_ flags);	1812	loop_init (EV_A_ flags);
1551		1813
1552	if (ev_backend (EV_A))	1814	if (ev_backend (EV_A))
1553	return loop;	1815	return EV_A;
1554		1816
1555	return 0;	1817	return 0;
1556	}	1818	}
1557		1819
1558	void	1820	void
…		…
1565	void	1827	void
1566	ev_loop_fork (EV_P)	1828	ev_loop_fork (EV_P)
1567	{	1829	{
1568	postfork = 1; /* must be in line with ev_default_fork */	1830	postfork = 1; /* must be in line with ev_default_fork */
1569	}	1831	}
		1832	#endif /* multiplicity */
1570		1833
1571	#if EV_VERIFY	1834	#if EV_VERIFY
1572	static void noinline	1835	static void noinline
1573	verify_watcher (EV_P_ W w)	1836	verify_watcher (EV_P_ W w)
1574	{	1837	{
…		…
1602	verify_watcher (EV_A_ ws [cnt]);	1865	verify_watcher (EV_A_ ws [cnt]);
1603	}	1866	}
1604	}	1867	}
1605	#endif	1868	#endif
1606		1869
		1870	#if EV_MINIMAL < 2
1607	void	1871	void
1608	ev_loop_verify (EV_P)	1872	ev_loop_verify (EV_P)
1609	{	1873	{
1610	#if EV_VERIFY	1874	#if EV_VERIFY
1611	int i;	1875	int i;
…		…
1660	assert (checkmax >= checkcnt);	1924	assert (checkmax >= checkcnt);
1661	array_verify (EV_A_ (W *)checks, checkcnt);	1925	array_verify (EV_A_ (W *)checks, checkcnt);
1662		1926
1663	# if 0	1927	# if 0
1664	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1928	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)	1929	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1666	# endif
1667	#endif	1930	# endif
		1931	#endif
1668	}	1932	}
1669		1933	#endif
1670	#endif /* multiplicity */
1671		1934
1672	#if EV_MULTIPLICITY	1935	#if EV_MULTIPLICITY
1673	struct ev_loop *	1936	struct ev_loop *
1674	ev_default_loop_init (unsigned int flags)	1937	ev_default_loop_init (unsigned int flags)
1675	#else	1938	#else
…		…
1678	#endif	1941	#endif
1679	{	1942	{
1680	if (!ev_default_loop_ptr)	1943	if (!ev_default_loop_ptr)
1681	{	1944	{
1682	#if EV_MULTIPLICITY	1945	#if EV_MULTIPLICITY
1683	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1946	EV_P = ev_default_loop_ptr = &default_loop_struct;
1684	#else	1947	#else
1685	ev_default_loop_ptr = 1;	1948	ev_default_loop_ptr = 1;
1686	#endif	1949	#endif
1687		1950
1688	loop_init (EV_A_ flags);	1951	loop_init (EV_A_ flags);
…		…
1705		1968
1706	void	1969	void
1707	ev_default_destroy (void)	1970	ev_default_destroy (void)
1708	{	1971	{
1709	#if EV_MULTIPLICITY	1972	#if EV_MULTIPLICITY
1710	struct ev_loop *loop = ev_default_loop_ptr;	1973	EV_P = ev_default_loop_ptr;
1711	#endif	1974	#endif
1712		1975
1713	ev_default_loop_ptr = 0;	1976	ev_default_loop_ptr = 0;
1714		1977
1715	#ifndef _WIN32	1978	#ifndef _WIN32
…		…
1722		1985
1723	void	1986	void
1724	ev_default_fork (void)	1987	ev_default_fork (void)
1725	{	1988	{
1726	#if EV_MULTIPLICITY	1989	#if EV_MULTIPLICITY
1727	struct ev_loop *loop = ev_default_loop_ptr;	1990	EV_P = ev_default_loop_ptr;
1728	#endif	1991	#endif
1729		1992
1730	postfork = 1; /* must be in line with ev_loop_fork */	1993	postfork = 1; /* must be in line with ev_loop_fork */
1731	}	1994	}
1732		1995
…		…
1736	ev_invoke (EV_P_ void *w, int revents)	1999	ev_invoke (EV_P_ void *w, int revents)
1737	{	2000	{
1738	EV_CB_INVOKE ((W)w, revents);	2001	EV_CB_INVOKE ((W)w, revents);
1739	}	2002	}
1740		2003
1741	inline_speed void	2004	unsigned int
1742	call_pending (EV_P)	2005	ev_pending_count (EV_P)
		2006	{
		2007	int pri;
		2008	unsigned int count = 0;
		2009
		2010	for (pri = NUMPRI; pri--; )
		2011	count += pendingcnt [pri];
		2012
		2013	return count;
		2014	}
		2015
		2016	void noinline
		2017	ev_invoke_pending (EV_P)
1743	{	2018	{
1744	int pri;	2019	int pri;
1745		2020
1746	for (pri = NUMPRI; pri--; )	2021	for (pri = NUMPRI; pri--; )
1747	while (pendingcnt [pri])	2022	while (pendingcnt [pri])
1748	{	2023	{
1749	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	2024	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1750		2025
1751	if (expect_true (p->w))
1752	{
1753	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/	2026	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		2027	/* ^ this is no longer true, as pending_w could be here */
1754		2028
1755	p->w->pending = 0;	2029	p->w->pending = 0;
1756	EV_CB_INVOKE (p->w, p->events);	2030	EV_CB_INVOKE (p->w, p->events);
1757	EV_FREQUENT_CHECK;	2031	EV_FREQUENT_CHECK;
1758	}
1759	}	2032	}
1760	}	2033	}
1761		2034
1762	#if EV_IDLE_ENABLE	2035	#if EV_IDLE_ENABLE
		2036	/* make idle watchers pending. this handles the "call-idle */
		2037	/* only when higher priorities are idle" logic */
1763	inline_size void	2038	inline_size void
1764	idle_reify (EV_P)	2039	idle_reify (EV_P)
1765	{	2040	{
1766	if (expect_false (idleall))	2041	if (expect_false (idleall))
1767	{	2042	{
…		…
1780	}	2055	}
1781	}	2056	}
1782	}	2057	}
1783	#endif	2058	#endif
1784		2059
		2060	/* make timers pending */
1785	inline_size void	2061	inline_size void
1786	timers_reify (EV_P)	2062	timers_reify (EV_P)
1787	{	2063	{
1788	EV_FREQUENT_CHECK;	2064	EV_FREQUENT_CHECK;
1789		2065
…		…
1818	feed_reverse_done (EV_A_ EV_TIMEOUT);	2094	feed_reverse_done (EV_A_ EV_TIMEOUT);
1819	}	2095	}
1820	}	2096	}
1821		2097
1822	#if EV_PERIODIC_ENABLE	2098	#if EV_PERIODIC_ENABLE
		2099	/* make periodics pending */
1823	inline_size void	2100	inline_size void
1824	periodics_reify (EV_P)	2101	periodics_reify (EV_P)
1825	{	2102	{
1826	EV_FREQUENT_CHECK;	2103	EV_FREQUENT_CHECK;
1827		2104
…		…
1874		2151
1875	feed_reverse_done (EV_A_ EV_PERIODIC);	2152	feed_reverse_done (EV_A_ EV_PERIODIC);
1876	}	2153	}
1877	}	2154	}
1878		2155
		2156	/* simply recalculate all periodics */
		2157	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1879	static void noinline	2158	static void noinline
1880	periodics_reschedule (EV_P)	2159	periodics_reschedule (EV_P)
1881	{	2160	{
1882	int i;	2161	int i;
1883		2162
…		…
1896		2175
1897	reheap (periodics, periodiccnt);	2176	reheap (periodics, periodiccnt);
1898	}	2177	}
1899	#endif	2178	#endif
1900		2179
		2180	/* adjust all timers by a given offset */
1901	static void noinline	2181	static void noinline
1902	timers_reschedule (EV_P_ ev_tstamp adjust)	2182	timers_reschedule (EV_P_ ev_tstamp adjust)
1903	{	2183	{
1904	int i;	2184	int i;
1905		2185
…		…
1909	ANHE_w (*he)->at += adjust;	2189	ANHE_w (*he)->at += adjust;
1910	ANHE_at_cache (*he);	2190	ANHE_at_cache (*he);
1911	}	2191	}
1912	}	2192	}
1913		2193
		2194	/* fetch new monotonic and realtime times from the kernel */
		2195	/* also detect if there was a timejump, and act accordingly */
1914	inline_speed void	2196	inline_speed void
1915	time_update (EV_P_ ev_tstamp max_block)	2197	time_update (EV_P_ ev_tstamp max_block)
1916	{	2198	{
1917	int i;
1918
1919	#if EV_USE_MONOTONIC	2199	#if EV_USE_MONOTONIC
1920	if (expect_true (have_monotonic))	2200	if (expect_true (have_monotonic))
1921	{	2201	{
		2202	int i;
1922	ev_tstamp odiff = rtmn_diff;	2203	ev_tstamp odiff = rtmn_diff;
1923		2204
1924	mn_now = get_clock ();	2205	mn_now = get_clock ();
1925		2206
1926	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2207	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1976		2257
1977	mn_now = ev_rt_now;	2258	mn_now = ev_rt_now;
1978	}	2259	}
1979	}	2260	}
1980		2261
1981	static int loop_done;
1982
1983	void	2262	void
1984	ev_loop (EV_P_ int flags)	2263	ev_loop (EV_P_ int flags)
1985	{	2264	{
		2265	#if EV_MINIMAL < 2
		2266	++loop_depth;
		2267	#endif
		2268
		2269	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2270
1986	loop_done = EVUNLOOP_CANCEL;	2271	loop_done = EVUNLOOP_CANCEL;
1987		2272
1988	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2273	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1989		2274
1990	do	2275	do
1991	{	2276	{
1992	#if EV_VERIFY >= 2	2277	#if EV_VERIFY >= 2
1993	ev_loop_verify (EV_A);	2278	ev_loop_verify (EV_A);
…		…
2006	/* we might have forked, so queue fork handlers */	2291	/* we might have forked, so queue fork handlers */
2007	if (expect_false (postfork))	2292	if (expect_false (postfork))
2008	if (forkcnt)	2293	if (forkcnt)
2009	{	2294	{
2010	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2295	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2011	call_pending (EV_A);	2296	EV_INVOKE_PENDING;
2012	}	2297	}
2013	#endif	2298	#endif
2014		2299
2015	/* queue prepare watchers (and execute them) */	2300	/* queue prepare watchers (and execute them) */
2016	if (expect_false (preparecnt))	2301	if (expect_false (preparecnt))
2017	{	2302	{
2018	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2303	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2019	call_pending (EV_A);	2304	EV_INVOKE_PENDING;
2020	}	2305	}
		2306
		2307	if (expect_false (loop_done))
		2308	break;
2021		2309
2022	/* we might have forked, so reify kernel state if necessary */	2310	/* we might have forked, so reify kernel state if necessary */
2023	if (expect_false (postfork))	2311	if (expect_false (postfork))
2024	loop_fork (EV_A);	2312	loop_fork (EV_A);
2025		2313
…		…
2031	ev_tstamp waittime = 0.;	2319	ev_tstamp waittime = 0.;
2032	ev_tstamp sleeptime = 0.;	2320	ev_tstamp sleeptime = 0.;
2033		2321
2034	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2322	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
2035	{	2323	{
		2324	/* remember old timestamp for io_blocktime calculation */
		2325	ev_tstamp prev_mn_now = mn_now;
		2326
2036	/* update time to cancel out callback processing overhead */	2327	/* update time to cancel out callback processing overhead */
2037	time_update (EV_A_ 1e100);	2328	time_update (EV_A_ 1e100);
		2329
		2330	waittime = MAX_BLOCKTIME;
2038		2331
2039	if (timercnt)	2332	if (timercnt)
2040	{	2333	{
2041	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;	2334	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
2042	if (waittime > to) waittime = to;	2335	if (waittime > to) waittime = to;
…		…
2048	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2341	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2049	if (waittime > to) waittime = to;	2342	if (waittime > to) waittime = to;
2050	}	2343	}
2051	#endif	2344	#endif
2052		2345
		2346	/* don't let timeouts decrease the waittime below timeout_blocktime */
2053	if (expect_false (waittime < timeout_blocktime))	2347	if (expect_false (waittime < timeout_blocktime))
2054	waittime = timeout_blocktime;	2348	waittime = timeout_blocktime;
2055		2349
2056	sleeptime = waittime - backend_fudge;	2350	/* extra check because io_blocktime is commonly 0 */
2057
2058	if (expect_true (sleeptime > io_blocktime))	2351	if (expect_false (io_blocktime))
2059	sleeptime = io_blocktime;
2060
2061	if (sleeptime)
2062	{	2352	{
		2353	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2354
		2355	if (sleeptime > waittime - backend_fudge)
		2356	sleeptime = waittime - backend_fudge;
		2357
		2358	if (expect_true (sleeptime > 0.))
		2359	{
2063	ev_sleep (sleeptime);	2360	ev_sleep (sleeptime);
2064	waittime -= sleeptime;	2361	waittime -= sleeptime;
		2362	}
2065	}	2363	}
2066	}	2364	}
2067		2365
		2366	#if EV_MINIMAL < 2
2068	++loop_count;	2367	++loop_count;
		2368	#endif
		2369	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2069	backend_poll (EV_A_ waittime);	2370	backend_poll (EV_A_ waittime);
		2371	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2070		2372
2071	/* update ev_rt_now, do magic */	2373	/* update ev_rt_now, do magic */
2072	time_update (EV_A_ waittime + sleeptime);	2374	time_update (EV_A_ waittime + sleeptime);
2073	}	2375	}
2074		2376
…		…
2085		2387
2086	/* queue check watchers, to be executed first */	2388	/* queue check watchers, to be executed first */
2087	if (expect_false (checkcnt))	2389	if (expect_false (checkcnt))
2088	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2390	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2089		2391
2090	call_pending (EV_A);	2392	EV_INVOKE_PENDING;
2091	}	2393	}
2092	while (expect_true (	2394	while (expect_true (
2093	activecnt	2395	activecnt
2094	&& !loop_done	2396	&& !loop_done
2095	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2397	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2096	));	2398	));
2097		2399
2098	if (loop_done == EVUNLOOP_ONE)	2400	if (loop_done == EVUNLOOP_ONE)
2099	loop_done = EVUNLOOP_CANCEL;	2401	loop_done = EVUNLOOP_CANCEL;
		2402
		2403	#if EV_MINIMAL < 2
		2404	--loop_depth;
		2405	#endif
2100	}	2406	}
2101		2407
2102	void	2408	void
2103	ev_unloop (EV_P_ int how)	2409	ev_unloop (EV_P_ int how)
2104	{	2410	{
…		…
2135	ev_tstamp mn_prev = mn_now;	2441	ev_tstamp mn_prev = mn_now;
2136		2442
2137	ev_now_update (EV_A);	2443	ev_now_update (EV_A);
2138	timers_reschedule (EV_A_ mn_now - mn_prev);	2444	timers_reschedule (EV_A_ mn_now - mn_prev);
2139	#if EV_PERIODIC_ENABLE	2445	#if EV_PERIODIC_ENABLE
		2446	/* TODO: really do this? */
2140	periodics_reschedule (EV_A);	2447	periodics_reschedule (EV_A);
2141	#endif	2448	#endif
2142	}	2449	}
2143		2450
2144	/*****************************************************************************/	2451	/*****************************************************************************/
		2452	/* singly-linked list management, used when the expected list length is short */
2145		2453
2146	inline_size void	2454	inline_size void
2147	wlist_add (WL *head, WL elem)	2455	wlist_add (WL *head, WL elem)
2148	{	2456	{
2149	elem->next = *head;	2457	elem->next = *head;
…		…
2153	inline_size void	2461	inline_size void
2154	wlist_del (WL *head, WL elem)	2462	wlist_del (WL *head, WL elem)
2155	{	2463	{
2156	while (*head)	2464	while (*head)
2157	{	2465	{
2158	if (*head == elem)	2466	if (expect_true (*head == elem))
2159	{	2467	{
2160	*head = elem->next;	2468	*head = elem->next;
2161	return;	2469	break;
2162	}	2470	}
2163		2471
2164	head = &(*head)->next;	2472	head = &(*head)->next;
2165	}	2473	}
2166	}	2474	}
2167		2475
		2476	/* internal, faster, version of ev_clear_pending */
2168	inline_speed void	2477	inline_speed void
2169	clear_pending (EV_P_ W w)	2478	clear_pending (EV_P_ W w)
2170	{	2479	{
2171	if (w->pending)	2480	if (w->pending)
2172	{	2481	{
2173	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2482	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2174	w->pending = 0;	2483	w->pending = 0;
2175	}	2484	}
2176	}	2485	}
2177		2486
2178	int	2487	int
…		…
2182	int pending = w_->pending;	2491	int pending = w_->pending;
2183		2492
2184	if (expect_true (pending))	2493	if (expect_true (pending))
2185	{	2494	{
2186	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2495	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2496	p->w = (W)&pending_w;
2187	w_->pending = 0;	2497	w_->pending = 0;
2188	p->w = 0;
2189	return p->events;	2498	return p->events;
2190	}	2499	}
2191	else	2500	else
2192	return 0;	2501	return 0;
2193	}	2502	}
2194		2503
2195	inline_size void	2504	inline_size void
2196	pri_adjust (EV_P_ W w)	2505	pri_adjust (EV_P_ W w)
2197	{	2506	{
2198	int pri = w->priority;	2507	int pri = ev_priority (w);
2199	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2508	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2200	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2509	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2201	w->priority = pri;	2510	ev_set_priority (w, pri);
2202	}	2511	}
2203		2512
2204	inline_speed void	2513	inline_speed void
2205	ev_start (EV_P_ W w, int active)	2514	ev_start (EV_P_ W w, int active)
2206	{	2515	{
…		…
2225		2534
2226	if (expect_false (ev_is_active (w)))	2535	if (expect_false (ev_is_active (w)))
2227	return;	2536	return;
2228		2537
2229	assert (("libev: ev_io_start called with negative fd", fd >= 0));	2538	assert (("libev: ev_io_start called with negative fd", fd >= 0));
2230	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));	2539	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2231		2540
2232	EV_FREQUENT_CHECK;	2541	EV_FREQUENT_CHECK;
2233		2542
2234	ev_start (EV_A_ (W)w, 1);	2543	ev_start (EV_A_ (W)w, 1);
2235	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2544	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2236	wlist_add (&anfds[fd].head, (WL)w);	2545	wlist_add (&anfds[fd].head, (WL)w);
2237		2546
2238	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);	2547	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2239	w->events &= ~EV__IOFDSET;	2548	w->events &= ~EV__IOFDSET;
2240		2549
2241	EV_FREQUENT_CHECK;	2550	EV_FREQUENT_CHECK;
2242	}	2551	}
2243		2552
…		…
2305	timers [active] = timers [timercnt + HEAP0];	2614	timers [active] = timers [timercnt + HEAP0];
2306	adjustheap (timers, timercnt, active);	2615	adjustheap (timers, timercnt, active);
2307	}	2616	}
2308	}	2617	}
2309		2618
2310	EV_FREQUENT_CHECK;
2311
2312	ev_at (w) -= mn_now;	2619	ev_at (w) -= mn_now;
2313		2620
2314	ev_stop (EV_A_ (W)w);	2621	ev_stop (EV_A_ (W)w);
		2622
		2623	EV_FREQUENT_CHECK;
2315	}	2624	}
2316		2625
2317	void noinline	2626	void noinline
2318	ev_timer_again (EV_P_ ev_timer *w)	2627	ev_timer_again (EV_P_ ev_timer *w)
2319	{	2628	{
…		…
2337	}	2646	}
2338		2647
2339	EV_FREQUENT_CHECK;	2648	EV_FREQUENT_CHECK;
2340	}	2649	}
2341		2650
		2651	ev_tstamp
		2652	ev_timer_remaining (EV_P_ ev_timer *w)
		2653	{
		2654	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2655	}
		2656
2342	#if EV_PERIODIC_ENABLE	2657	#if EV_PERIODIC_ENABLE
2343	void noinline	2658	void noinline
2344	ev_periodic_start (EV_P_ ev_periodic *w)	2659	ev_periodic_start (EV_P_ ev_periodic *w)
2345	{	2660	{
2346	if (expect_false (ev_is_active (w)))	2661	if (expect_false (ev_is_active (w)))
…		…
2392	periodics [active] = periodics [periodiccnt + HEAP0];	2707	periodics [active] = periodics [periodiccnt + HEAP0];
2393	adjustheap (periodics, periodiccnt, active);	2708	adjustheap (periodics, periodiccnt, active);
2394	}	2709	}
2395	}	2710	}
2396		2711
2397	EV_FREQUENT_CHECK;
2398
2399	ev_stop (EV_A_ (W)w);	2712	ev_stop (EV_A_ (W)w);
		2713
		2714	EV_FREQUENT_CHECK;
2400	}	2715	}
2401		2716
2402	void noinline	2717	void noinline
2403	ev_periodic_again (EV_P_ ev_periodic *w)	2718	ev_periodic_again (EV_P_ ev_periodic *w)
2404	{	2719	{
…		…
2413	#endif	2728	#endif
2414		2729
2415	void noinline	2730	void noinline
2416	ev_signal_start (EV_P_ ev_signal *w)	2731	ev_signal_start (EV_P_ ev_signal *w)
2417	{	2732	{
2418	#if EV_MULTIPLICITY
2419	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2420	#endif
2421	if (expect_false (ev_is_active (w)))	2733	if (expect_false (ev_is_active (w)))
2422	return;	2734	return;
2423		2735
2424	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2736	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2425		2737
2426	evpipe_init (EV_A);	2738	#if EV_MULTIPLICITY
		2739	assert (("libev: a signal must not be attached to two different loops",
		2740	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2427		2741
2428	EV_FREQUENT_CHECK;	2742	signals [w->signum - 1].loop = EV_A;
		2743	#endif
2429		2744
		2745	EV_FREQUENT_CHECK;
		2746
		2747	#if EV_USE_SIGNALFD
		2748	if (sigfd == -2)
2430	{	2749	{
2431	#ifndef _WIN32	2750	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2432	sigset_t full, prev;	2751	if (sigfd < 0 && errno == EINVAL)
2433	sigfillset (&full);	2752	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2434	sigprocmask (SIG_SETMASK, &full, &prev);
2435	#endif
2436		2753
2437	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);	2754	if (sigfd >= 0)
		2755	{
		2756	fd_intern (sigfd); /* doing it twice will not hurt */
2438		2757
2439	#ifndef _WIN32	2758	sigemptyset (&sigfd_set);
2440	sigprocmask (SIG_SETMASK, &prev, 0);	2759
2441	#endif	2760	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2761	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2762	ev_io_start (EV_A_ &sigfd_w);
		2763	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2764	}
2442	}	2765	}
		2766
		2767	if (sigfd >= 0)
		2768	{
		2769	/* TODO: check .head */
		2770	sigaddset (&sigfd_set, w->signum);
		2771	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2772
		2773	signalfd (sigfd, &sigfd_set, 0);
		2774	}
		2775	#endif
2443		2776
2444	ev_start (EV_A_ (W)w, 1);	2777	ev_start (EV_A_ (W)w, 1);
2445	wlist_add (&signals [w->signum - 1].head, (WL)w);	2778	wlist_add (&signals [w->signum - 1].head, (WL)w);
2446		2779
2447	if (!((WL)w)->next)	2780	if (!((WL)w)->next)
		2781	# if EV_USE_SIGNALFD
		2782	if (sigfd < 0) /*TODO*/
		2783	# endif
2448	{	2784	{
2449	#if _WIN32	2785	# ifdef _WIN32
		2786	evpipe_init (EV_A);
		2787
2450	signal (w->signum, ev_sighandler);	2788	signal (w->signum, ev_sighandler);
2451	#else	2789	# else
2452	struct sigaction sa;	2790	struct sigaction sa;
		2791
		2792	evpipe_init (EV_A);
		2793
2453	sa.sa_handler = ev_sighandler;	2794	sa.sa_handler = ev_sighandler;
2454	sigfillset (&sa.sa_mask);	2795	sigfillset (&sa.sa_mask);
2455	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2796	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2456	sigaction (w->signum, &sa, 0);	2797	sigaction (w->signum, &sa, 0);
		2798
		2799	sigemptyset (&sa.sa_mask);
		2800	sigaddset (&sa.sa_mask, w->signum);
		2801	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2457	#endif	2802	#endif
2458	}	2803	}
2459		2804
2460	EV_FREQUENT_CHECK;	2805	EV_FREQUENT_CHECK;
2461	}	2806	}
2462		2807
2463	void noinline	2808	void noinline
…		…
2471		2816
2472	wlist_del (&signals [w->signum - 1].head, (WL)w);	2817	wlist_del (&signals [w->signum - 1].head, (WL)w);
2473	ev_stop (EV_A_ (W)w);	2818	ev_stop (EV_A_ (W)w);
2474		2819
2475	if (!signals [w->signum - 1].head)	2820	if (!signals [w->signum - 1].head)
		2821	{
		2822	#if EV_MULTIPLICITY
		2823	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2824	#endif
		2825	#if EV_USE_SIGNALFD
		2826	if (sigfd >= 0)
		2827	{
		2828	sigset_t ss;
		2829
		2830	sigemptyset (&ss);
		2831	sigaddset (&ss, w->signum);
		2832	sigdelset (&sigfd_set, w->signum);
		2833
		2834	signalfd (sigfd, &sigfd_set, 0);
		2835	sigprocmask (SIG_UNBLOCK, &ss, 0);
		2836	}
		2837	else
		2838	#endif
2476	signal (w->signum, SIG_DFL);	2839	signal (w->signum, SIG_DFL);
		2840	}
2477		2841
2478	EV_FREQUENT_CHECK;	2842	EV_FREQUENT_CHECK;
2479	}	2843	}
2480		2844
2481	void	2845	void
…		…
2522	#define MIN_STAT_INTERVAL 0.1074891	2886	#define MIN_STAT_INTERVAL 0.1074891
2523		2887
2524	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2888	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2525		2889
2526	#if EV_USE_INOTIFY	2890	#if EV_USE_INOTIFY
2527	# define EV_INOTIFY_BUFSIZE 8192	2891
		2892	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		2893	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2528		2894
2529	static void noinline	2895	static void noinline
2530	infy_add (EV_P_ ev_stat *w)	2896	infy_add (EV_P_ ev_stat *w)
2531	{	2897	{
2532	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);	2898	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);
2533		2899
2534	if (w->wd < 0)	2900	if (w->wd >= 0)
		2901	{
		2902	struct statfs sfs;
		2903
		2904	/* now local changes will be tracked by inotify, but remote changes won't */
		2905	/* unless the filesystem is known to be local, we therefore still poll */
		2906	/* also do poll on <2.6.25, but with normal frequency */
		2907
		2908	if (!fs_2625)
		2909	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2910	else if (!statfs (w->path, &sfs)
		2911	&& (sfs.f_type == 0x1373 /* devfs */
		2912	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2913	|| sfs.f_type == 0x3153464a /* jfs */
		2914	|| sfs.f_type == 0x52654973 /* reiser3 */
		2915	|| sfs.f_type == 0x01021994 /* tempfs */
		2916	|| sfs.f_type == 0x58465342 /* xfs */))
		2917	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2918	else
		2919	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2535	{	2920	}
		2921	else
		2922	{
		2923	/* can't use inotify, continue to stat */
2536	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	2924	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2537	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2538		2925
2539	/* monitor some parent directory for speedup hints */	2926	/* if path is not there, monitor some parent directory for speedup hints */
2540	/* note that exceeding the hardcoded path limit is not a correctness issue, */	2927	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2541	/* but an efficiency issue only */	2928	/* but an efficiency issue only */
2542	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2929	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2543	{	2930	{
2544	char path [4096];	2931	char path [4096];
…		…
2560	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2947	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2561	}	2948	}
2562	}	2949	}
2563		2950
2564	if (w->wd >= 0)	2951	if (w->wd >= 0)
2565	{
2566	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2952	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2567		2953
2568	/* now local changes will be tracked by inotify, but remote changes won't */	2954	/* now re-arm timer, if required */
2569	/* unless the filesystem it known to be local, we therefore still poll */	2955	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2570	/* also do poll on <2.6.25, but with normal frequency */
2571	struct statfs sfs;
2572
2573	if (fs_2625 && !statfs (w->path, &sfs))
2574	if (sfs.f_type == 0x1373 /* devfs */
2575	|| sfs.f_type == 0xEF53 /* ext2/3 */
2576	|| sfs.f_type == 0x3153464a /* jfs */
2577	|| sfs.f_type == 0x52654973 /* reiser3 */
2578	|| sfs.f_type == 0x01021994 /* tempfs */
2579	|| sfs.f_type == 0x58465342 /* xfs */)
2580	return;
2581
2582	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2583	ev_timer_again (EV_A_ &w->timer);	2956	ev_timer_again (EV_A_ &w->timer);
2584	}	2957	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2585	}	2958	}
2586		2959
2587	static void noinline	2960	static void noinline
2588	infy_del (EV_P_ ev_stat *w)	2961	infy_del (EV_P_ ev_stat *w)
2589	{	2962	{
…		…
2634		3007
2635	static void	3008	static void
2636	infy_cb (EV_P_ ev_io *w, int revents)	3009	infy_cb (EV_P_ ev_io *w, int revents)
2637	{	3010	{
2638	char buf [EV_INOTIFY_BUFSIZE];	3011	char buf [EV_INOTIFY_BUFSIZE];
2639	struct inotify_event *ev = (struct inotify_event *)buf;
2640	int ofs;	3012	int ofs;
2641	int len = read (fs_fd, buf, sizeof (buf));	3013	int len = read (fs_fd, buf, sizeof (buf));
2642		3014
2643	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	3015	for (ofs = 0; ofs < len; )
		3016	{
		3017	struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2644	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3018	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		3019	ofs += sizeof (struct inotify_event) + ev->len;
		3020	}
		3021	}
		3022
		3023	inline_size unsigned int
		3024	ev_linux_version (void)
		3025	{
		3026	struct utsname buf;
		3027	unsigned int v;
		3028	int i;
		3029	char *p = buf.release;
		3030
		3031	if (uname (&buf))
		3032	return 0;
		3033
		3034	for (i = 3+1; --i; )
		3035	{
		3036	unsigned int c = 0;
		3037
		3038	for (;;)
		3039	{
		3040	if (*p >= '0' && *p <= '9')
		3041	c = c * 10 + *p++ - '0';
		3042	else
		3043	{
		3044	p += *p == '.';
		3045	break;
		3046	}
		3047	}
		3048
		3049	v = (v << 8) | c;
		3050	}
		3051
		3052	return v;
2645	}	3053	}
2646		3054
2647	inline_size void	3055	inline_size void
2648	check_2625 (EV_P)	3056	ev_check_2625 (EV_P)
2649	{	3057	{
2650	/* kernels < 2.6.25 are borked	3058	/* kernels < 2.6.25 are borked
2651	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	3059	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2652	*/	3060	*/
2653	struct utsname buf;	3061	if (ev_linux_version () < 0x020619)
2654	int major, minor, micro;
2655
2656	if (uname (&buf))
2657	return;	3062	return;
2658		3063
2659	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2660	return;
2661
2662	if (major < 2
2663	|| (major == 2 && minor < 6)
2664	|| (major == 2 && minor == 6 && micro < 25))
2665	return;
2666
2667	fs_2625 = 1;	3064	fs_2625 = 1;
		3065	}
		3066
		3067	inline_size int
		3068	infy_newfd (void)
		3069	{
		3070	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3071	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3072	if (fd >= 0)
		3073	return fd;
		3074	#endif
		3075	return inotify_init ();
2668	}	3076	}
2669		3077
2670	inline_size void	3078	inline_size void
2671	infy_init (EV_P)	3079	infy_init (EV_P)
2672	{	3080	{
2673	if (fs_fd != -2)	3081	if (fs_fd != -2)
2674	return;	3082	return;
2675		3083
2676	fs_fd = -1;	3084	fs_fd = -1;
2677		3085
2678	check_2625 (EV_A);	3086	ev_check_2625 (EV_A);
2679		3087
2680	fs_fd = inotify_init ();	3088	fs_fd = infy_newfd ();
2681		3089
2682	if (fs_fd >= 0)	3090	if (fs_fd >= 0)
2683	{	3091	{
		3092	fd_intern (fs_fd);
2684	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3093	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2685	ev_set_priority (&fs_w, EV_MAXPRI);	3094	ev_set_priority (&fs_w, EV_MAXPRI);
2686	ev_io_start (EV_A_ &fs_w);	3095	ev_io_start (EV_A_ &fs_w);
		3096	ev_unref (EV_A);
2687	}	3097	}
2688	}	3098	}
2689		3099
2690	inline_size void	3100	inline_size void
2691	infy_fork (EV_P)	3101	infy_fork (EV_P)
…		…
2693	int slot;	3103	int slot;
2694		3104
2695	if (fs_fd < 0)	3105	if (fs_fd < 0)
2696	return;	3106	return;
2697		3107
		3108	ev_ref (EV_A);
		3109	ev_io_stop (EV_A_ &fs_w);
2698	close (fs_fd);	3110	close (fs_fd);
2699	fs_fd = inotify_init ();	3111	fs_fd = infy_newfd ();
		3112
		3113	if (fs_fd >= 0)
		3114	{
		3115	fd_intern (fs_fd);
		3116	ev_io_set (&fs_w, fs_fd, EV_READ);
		3117	ev_io_start (EV_A_ &fs_w);
		3118	ev_unref (EV_A);
		3119	}
2700		3120
2701	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3121	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2702	{	3122	{
2703	WL w_ = fs_hash [slot].head;	3123	WL w_ = fs_hash [slot].head;
2704	fs_hash [slot].head = 0;	3124	fs_hash [slot].head = 0;
…		…
2711	w->wd = -1;	3131	w->wd = -1;
2712		3132
2713	if (fs_fd >= 0)	3133	if (fs_fd >= 0)
2714	infy_add (EV_A_ w); /* re-add, no matter what */	3134	infy_add (EV_A_ w); /* re-add, no matter what */
2715	else	3135	else
		3136	{
		3137	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3138	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2716	ev_timer_again (EV_A_ &w->timer);	3139	ev_timer_again (EV_A_ &w->timer);
		3140	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3141	}
2717	}	3142	}
2718	}	3143	}
2719	}	3144	}
2720		3145
2721	#endif	3146	#endif
…		…
2738	static void noinline	3163	static void noinline
2739	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3164	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2740	{	3165	{
2741	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	3166	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2742		3167
2743	/* we copy this here each the time so that */	3168	ev_statdata prev = w->attr;
2744	/* prev has the old value when the callback gets invoked */
2745	w->prev = w->attr;
2746	ev_stat_stat (EV_A_ w);	3169	ev_stat_stat (EV_A_ w);
2747		3170
2748	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3171	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2749	if (	3172	if (
2750	w->prev.st_dev != w->attr.st_dev	3173	prev.st_dev != w->attr.st_dev
2751	|| w->prev.st_ino != w->attr.st_ino	3174	|| prev.st_ino != w->attr.st_ino
2752	|| w->prev.st_mode != w->attr.st_mode	3175	|| prev.st_mode != w->attr.st_mode
2753	|| w->prev.st_nlink != w->attr.st_nlink	3176	|| prev.st_nlink != w->attr.st_nlink
2754	|| w->prev.st_uid != w->attr.st_uid	3177	|| prev.st_uid != w->attr.st_uid
2755	|| w->prev.st_gid != w->attr.st_gid	3178	|| prev.st_gid != w->attr.st_gid
2756	|| w->prev.st_rdev != w->attr.st_rdev	3179	|| prev.st_rdev != w->attr.st_rdev
2757	|| w->prev.st_size != w->attr.st_size	3180	|| prev.st_size != w->attr.st_size
2758	|| w->prev.st_atime != w->attr.st_atime	3181	|| prev.st_atime != w->attr.st_atime
2759	|| w->prev.st_mtime != w->attr.st_mtime	3182	|| prev.st_mtime != w->attr.st_mtime
2760	|| w->prev.st_ctime != w->attr.st_ctime	3183	|| prev.st_ctime != w->attr.st_ctime
2761	) {	3184	) {
		3185	/* we only update w->prev on actual differences */
		3186	/* in case we test more often than invoke the callback, */
		3187	/* to ensure that prev is always different to attr */
		3188	w->prev = prev;
		3189
2762	#if EV_USE_INOTIFY	3190	#if EV_USE_INOTIFY
2763	if (fs_fd >= 0)	3191	if (fs_fd >= 0)
2764	{	3192	{
2765	infy_del (EV_A_ w);	3193	infy_del (EV_A_ w);
2766	infy_add (EV_A_ w);	3194	infy_add (EV_A_ w);
…		…
2791		3219
2792	if (fs_fd >= 0)	3220	if (fs_fd >= 0)
2793	infy_add (EV_A_ w);	3221	infy_add (EV_A_ w);
2794	else	3222	else
2795	#endif	3223	#endif
		3224	{
2796	ev_timer_again (EV_A_ &w->timer);	3225	ev_timer_again (EV_A_ &w->timer);
		3226	ev_unref (EV_A);
		3227	}
2797		3228
2798	ev_start (EV_A_ (W)w, 1);	3229	ev_start (EV_A_ (W)w, 1);
2799		3230
2800	EV_FREQUENT_CHECK;	3231	EV_FREQUENT_CHECK;
2801	}	3232	}
…		…
2810	EV_FREQUENT_CHECK;	3241	EV_FREQUENT_CHECK;
2811		3242
2812	#if EV_USE_INOTIFY	3243	#if EV_USE_INOTIFY
2813	infy_del (EV_A_ w);	3244	infy_del (EV_A_ w);
2814	#endif	3245	#endif
		3246
		3247	if (ev_is_active (&w->timer))
		3248	{
		3249	ev_ref (EV_A);
2815	ev_timer_stop (EV_A_ &w->timer);	3250	ev_timer_stop (EV_A_ &w->timer);
		3251	}
2816		3252
2817	ev_stop (EV_A_ (W)w);	3253	ev_stop (EV_A_ (W)w);
2818		3254
2819	EV_FREQUENT_CHECK;	3255	EV_FREQUENT_CHECK;
2820	}	3256	}
…		…
2961	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3397	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2962	{	3398	{
2963	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3399	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2964		3400
2965	{	3401	{
2966	struct ev_loop *loop = w->other;	3402	EV_P = w->other;
2967		3403
2968	while (fdchangecnt)	3404	while (fdchangecnt)
2969	{	3405	{
2970	fd_reify (EV_A);	3406	fd_reify (EV_A);
2971	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3407	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
2979	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));	3415	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2980		3416
2981	ev_embed_stop (EV_A_ w);	3417	ev_embed_stop (EV_A_ w);
2982		3418
2983	{	3419	{
2984	struct ev_loop *loop = w->other;	3420	EV_P = w->other;
2985		3421
2986	ev_loop_fork (EV_A);	3422	ev_loop_fork (EV_A);
2987	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3423	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2988	}	3424	}
2989		3425
…		…
3003	{	3439	{
3004	if (expect_false (ev_is_active (w)))	3440	if (expect_false (ev_is_active (w)))
3005	return;	3441	return;
3006		3442
3007	{	3443	{
3008	struct ev_loop *loop = w->other;	3444	EV_P = w->other;
3009	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3445	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3010	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3446	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3011	}	3447	}
3012		3448
3013	EV_FREQUENT_CHECK;	3449	EV_FREQUENT_CHECK;
…		…
3040		3476
3041	ev_io_stop (EV_A_ &w->io);	3477	ev_io_stop (EV_A_ &w->io);
3042	ev_prepare_stop (EV_A_ &w->prepare);	3478	ev_prepare_stop (EV_A_ &w->prepare);
3043	ev_fork_stop (EV_A_ &w->fork);	3479	ev_fork_stop (EV_A_ &w->fork);
3044		3480
		3481	ev_stop (EV_A_ (W)w);
		3482
3045	EV_FREQUENT_CHECK;	3483	EV_FREQUENT_CHECK;
3046	}	3484	}
3047	#endif	3485	#endif
3048		3486
3049	#if EV_FORK_ENABLE	3487	#if EV_FORK_ENABLE
…		…
3125		3563
3126	void	3564	void
3127	ev_async_send (EV_P_ ev_async *w)	3565	ev_async_send (EV_P_ ev_async *w)
3128	{	3566	{
3129	w->sent = 1;	3567	w->sent = 1;
3130	evpipe_write (EV_A_ &gotasync);	3568	evpipe_write (EV_A_ &async_pending);
3131	}	3569	}
3132	#endif	3570	#endif
3133		3571
3134	/*****************************************************************************/	3572	/*****************************************************************************/
3135		3573
…		…
3199	}	3637	}
3200	}	3638	}
3201		3639
3202	/*****************************************************************************/	3640	/*****************************************************************************/
3203		3641
3204	#if 0	3642	#if EV_WALK_ENABLE
3205	void	3643	void
3206	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))	3644	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3207	{	3645	{
3208	int i, j;	3646	int i, j;
3209	ev_watcher_list *wl, *wn;	3647	ev_watcher_list *wl, *wn;
…		…
3225	#if EV_USE_INOTIFY	3663	#if EV_USE_INOTIFY
3226	if (ev_cb ((ev_io *)wl) == infy_cb)	3664	if (ev_cb ((ev_io *)wl) == infy_cb)
3227	;	3665	;
3228	else	3666	else
3229	#endif	3667	#endif
3230	if ((ev_io *)wl != &pipeev)	3668	if ((ev_io *)wl != &pipe_w)
3231	if (types & EV_IO)	3669	if (types & EV_IO)
3232	cb (EV_A_ EV_IO, wl);	3670	cb (EV_A_ EV_IO, wl);
3233		3671
3234	wl = wn;	3672	wl = wn;
3235	}	3673	}
…		…
3284	if (types & EV_CHECK)	3722	if (types & EV_CHECK)
3285	for (i = checkcnt; i--; )	3723	for (i = checkcnt; i--; )
3286	cb (EV_A_ EV_CHECK, checks [i]);	3724	cb (EV_A_ EV_CHECK, checks [i]);
3287		3725
3288	if (types & EV_SIGNAL)	3726	if (types & EV_SIGNAL)
3289	for (i = 0; i < signalmax; ++i)	3727	for (i = 0; i < EV_NSIG - 1; ++i)
3290	for (wl = signals [i].head; wl; )	3728	for (wl = signals [i].head; wl; )
3291	{	3729	{
3292	wn = wl->next;	3730	wn = wl->next;
3293	cb (EV_A_ EV_SIGNAL, wl);	3731	cb (EV_A_ EV_SIGNAL, wl);
3294	wl = wn;	3732	wl = wn;

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