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Comparing libev/ev.c (file contents):
Revision 1.240 by root, Thu May 8 21:21:41 2008 UTC vs.
Revision 1.306 by root, Sun Jul 19 06:35:25 2009 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009 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	*
…		…
47	# include EV_CONFIG_H	47	# include EV_CONFIG_H
48	# else	48	# else
49	# include "config.h"	49	# include "config.h"
50	# endif	50	# endif
51		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
		64	# endif
		65
52	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
55	# endif	69	# endif
56	# ifndef EV_USE_REALTIME	70	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	71	# define EV_USE_REALTIME 0
58	# endif	72	# endif
59	# else	73	# else
60	# ifndef EV_USE_MONOTONIC	74	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	75	# define EV_USE_MONOTONIC 0
62	# endif	76	# endif
…		…
119	# else	133	# else
120	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
121	# endif	135	# endif
122	# endif	136	# endif
123		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
124	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
125	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
126	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD 1
127	# else	149	# else
128	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
129	# endif	151	# endif
130	# endif	152	# endif
131		153
132	#endif	154	#endif
133		155
134	#include <math.h>	156	#include <math.h>
135	#include <stdlib.h>	157	#include <stdlib.h>
136	#include <fcntl.h>	158	#include <fcntl.h>
…		…
154	#ifndef _WIN32	176	#ifndef _WIN32
155	# include <sys/time.h>	177	# include <sys/time.h>
156	# include <sys/wait.h>	178	# include <sys/wait.h>
157	# include <unistd.h>	179	# include <unistd.h>
158	#else	180	#else
		181	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	182	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	183	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	184	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	185	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	186	# endif
164	#endif	187	#endif
165		188
166	/* this block tries to deduce configuration from header-defined symbols and defaults */	189	/* this block tries to deduce configuration from header-defined symbols and defaults */
167		190
		191	/* try to deduce the maximum number of signals on this platform */
		192	/* one some platforms, NSIG is one too large. we do not bother */
		193	#if defined (EV_NSIG)
		194	/* use what's provided */
		195	#elif defined (NSIG)
		196	# define EV_NSIG (NSIG)
		197	#elif defined(_NSIG)
		198	# define EV_NSIG (_NSIG)
		199	#elif defined (SIGMAX)
		200	# define EV_NSIG (SIGMAX+1)
		201	#elif defined (SIG_MAX)
		202	# define EV_NSIG (SIG_MAX+1)
		203	#elif defined (_SIG_MAX)
		204	# define EV_NSIG (_SIG_MAX+1)
		205	#elif defined (MAXSIG)
		206	# define EV_NSIG (MAXSIG+1)
		207	#elif defined (MAX_SIG)
		208	# define EV_NSIG (MAX_SIG+1)
		209	#elif defined (SIGARRAYSIZE)
		210	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		211	#elif defined (_sys_nsig)
		212	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		213	#else
		214	# error "unable to find value for NSIG, please report"
		215	/* to make it compile regardless, just remove the above line */
		216	# define EV_NSIG 65
		217	#endif
		218
		219	#ifndef EV_USE_CLOCK_SYSCALL
		220	# if __linux && __GLIBC__ >= 2
		221	# define EV_USE_CLOCK_SYSCALL 1
		222	# else
		223	# define EV_USE_CLOCK_SYSCALL 0
		224	# endif
		225	#endif
		226
168	#ifndef EV_USE_MONOTONIC	227	#ifndef EV_USE_MONOTONIC
		228	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		229	# define EV_USE_MONOTONIC 1
		230	# else
169	# define EV_USE_MONOTONIC 0	231	# define EV_USE_MONOTONIC 0
		232	# endif
170	#endif	233	#endif
171		234
172	#ifndef EV_USE_REALTIME	235	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	236	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	237	#endif
175		238
176	#ifndef EV_USE_NANOSLEEP	239	#ifndef EV_USE_NANOSLEEP
		240	# if _POSIX_C_SOURCE >= 199309L
		241	# define EV_USE_NANOSLEEP 1
		242	# else
177	# define EV_USE_NANOSLEEP 0	243	# define EV_USE_NANOSLEEP 0
		244	# endif
178	#endif	245	#endif
179		246
180	#ifndef EV_USE_SELECT	247	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	248	# define EV_USE_SELECT 1
182	#endif	249	#endif
…		…
235	# else	302	# else
236	# define EV_USE_EVENTFD 0	303	# define EV_USE_EVENTFD 0
237	# endif	304	# endif
238	#endif	305	#endif
239		306
		307	#ifndef EV_USE_SIGNALFD
		308	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9))
		309	# define EV_USE_SIGNALFD 1
		310	# else
		311	# define EV_USE_SIGNALFD 0
		312	# endif
		313	#endif
		314
		315	#if 0 /* debugging */
		316	# define EV_VERIFY 3
		317	# define EV_USE_4HEAP 1
		318	# define EV_HEAP_CACHE_AT 1
		319	#endif
		320
		321	#ifndef EV_VERIFY
		322	# define EV_VERIFY !EV_MINIMAL
		323	#endif
		324
		325	#ifndef EV_USE_4HEAP
		326	# define EV_USE_4HEAP !EV_MINIMAL
		327	#endif
		328
		329	#ifndef EV_HEAP_CACHE_AT
		330	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		331	#endif
		332
		333	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		334	/* which makes programs even slower. might work on other unices, too. */
		335	#if EV_USE_CLOCK_SYSCALL
		336	# include <syscall.h>
		337	# ifdef SYS_clock_gettime
		338	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		339	# undef EV_USE_MONOTONIC
		340	# define EV_USE_MONOTONIC 1
		341	# else
		342	# undef EV_USE_CLOCK_SYSCALL
		343	# define EV_USE_CLOCK_SYSCALL 0
		344	# endif
		345	#endif
		346
240	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	347	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
241		348
242	#ifndef CLOCK_MONOTONIC	349	#ifndef CLOCK_MONOTONIC
243	# undef EV_USE_MONOTONIC	350	# undef EV_USE_MONOTONIC
244	# define EV_USE_MONOTONIC 0	351	# define EV_USE_MONOTONIC 0
…		…
259	# include <sys/select.h>	366	# include <sys/select.h>
260	# endif	367	# endif
261	#endif	368	#endif
262		369
263	#if EV_USE_INOTIFY	370	#if EV_USE_INOTIFY
		371	# include <sys/utsname.h>
		372	# include <sys/statfs.h>
264	# include <sys/inotify.h>	373	# include <sys/inotify.h>
		374	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		375	# ifndef IN_DONT_FOLLOW
		376	# undef EV_USE_INOTIFY
		377	# define EV_USE_INOTIFY 0
		378	# endif
265	#endif	379	#endif
266		380
267	#if EV_SELECT_IS_WINSOCKET	381	#if EV_SELECT_IS_WINSOCKET
268	# include <winsock.h>	382	# include <winsock.h>
269	#endif	383	#endif
270		384
271	#if EV_USE_EVENTFD	385	#if EV_USE_EVENTFD
272	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	386	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273	# include <stdint.h>	387	# include <stdint.h>
		388	# ifndef EFD_NONBLOCK
		389	# define EFD_NONBLOCK O_NONBLOCK
		390	# endif
		391	# ifndef EFD_CLOEXEC
		392	# define EFD_CLOEXEC O_CLOEXEC
		393	# endif
274	# ifdef __cplusplus	394	# ifdef __cplusplus
275	extern "C" {	395	extern "C" {
276	# endif	396	# endif
277	int eventfd (unsigned int initval, int flags);	397	int eventfd (unsigned int initval, int flags);
278	# ifdef __cplusplus	398	# ifdef __cplusplus
279	}	399	}
280	# endif	400	# endif
281	#endif	401	#endif
282		402
		403	#if EV_USE_SIGNALFD
		404	# include <sys/signalfd.h>
		405	#endif
		406
283	/**/	407	/**/
		408
		409	#if EV_VERIFY >= 3
		410	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		411	#else
		412	# define EV_FREQUENT_CHECK do { } while (0)
		413	#endif
284		414
285	/*	415	/*
286	* This is used to avoid floating point rounding problems.	416	* This is used to avoid floating point rounding problems.
287	* It is added to ev_rt_now when scheduling periodics	417	* It is added to ev_rt_now when scheduling periodics
288	* to ensure progress, time-wise, even when rounding	418	* to ensure progress, time-wise, even when rounding
…		…
315	# define inline_speed static noinline	445	# define inline_speed static noinline
316	#else	446	#else
317	# define inline_speed static inline	447	# define inline_speed static inline
318	#endif	448	#endif
319		449
320	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	450	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		451
		452	#if EV_MINPRI == EV_MAXPRI
		453	# define ABSPRI(w) (((W)w), 0)
		454	#else
321	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	455	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		456	#endif
322		457
323	#define EMPTY /* required for microsofts broken pseudo-c compiler */	458	#define EMPTY /* required for microsofts broken pseudo-c compiler */
324	#define EMPTY2(a,b) /* used to suppress some warnings */	459	#define EMPTY2(a,b) /* used to suppress some warnings */
325		460
326	typedef ev_watcher *W;	461	typedef ev_watcher *W;
…		…
328	typedef ev_watcher_time *WT;	463	typedef ev_watcher_time *WT;
329		464
330	#define ev_active(w) ((W)(w))->active	465	#define ev_active(w) ((W)(w))->active
331	#define ev_at(w) ((WT)(w))->at	466	#define ev_at(w) ((WT)(w))->at
332		467
333	#if EV_USE_MONOTONIC	468	#if EV_USE_REALTIME
334	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	469	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
335	/* giving it a reasonably high chance of working on typical architetcures */	470	/* giving it a reasonably high chance of working on typical architetcures */
		471	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		472	#endif
		473
		474	#if EV_USE_MONOTONIC
336	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	475	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
337	#endif	476	#endif
338		477
339	#ifdef _WIN32	478	#ifdef _WIN32
340	# include "ev_win32.c"	479	# include "ev_win32.c"
…		…
349	{	488	{
350	syserr_cb = cb;	489	syserr_cb = cb;
351	}	490	}
352		491
353	static void noinline	492	static void noinline
354	syserr (const char *msg)	493	ev_syserr (const char *msg)
355	{	494	{
356	if (!msg)	495	if (!msg)
357	msg = "(libev) system error";	496	msg = "(libev) system error";
358		497
359	if (syserr_cb)	498	if (syserr_cb)
…		…
405	#define ev_malloc(size) ev_realloc (0, (size))	544	#define ev_malloc(size) ev_realloc (0, (size))
406	#define ev_free(ptr) ev_realloc ((ptr), 0)	545	#define ev_free(ptr) ev_realloc ((ptr), 0)
407		546
408	/*****************************************************************************/	547	/*****************************************************************************/
409		548
		549	/* set in reify when reification needed */
		550	#define EV_ANFD_REIFY 1
		551
		552	/* file descriptor info structure */
410	typedef struct	553	typedef struct
411	{	554	{
412	WL head;	555	WL head;
413	unsigned char events;	556	unsigned char events; /* the events watched for */
		557	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		558	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
414	unsigned char reify;	559	unsigned char unused;
		560	#if EV_USE_EPOLL
		561	unsigned int egen; /* generation counter to counter epoll bugs */
		562	#endif
415	#if EV_SELECT_IS_WINSOCKET	563	#if EV_SELECT_IS_WINSOCKET
416	SOCKET handle;	564	SOCKET handle;
417	#endif	565	#endif
418	} ANFD;	566	} ANFD;
419		567
		568	/* stores the pending event set for a given watcher */
420	typedef struct	569	typedef struct
421	{	570	{
422	W w;	571	W w;
423	int events;	572	int events; /* the pending event set for the given watcher */
424	} ANPENDING;	573	} ANPENDING;
425		574
426	#if EV_USE_INOTIFY	575	#if EV_USE_INOTIFY
		576	/* hash table entry per inotify-id */
427	typedef struct	577	typedef struct
428	{	578	{
429	WL head;	579	WL head;
430	} ANFS;	580	} ANFS;
		581	#endif
		582
		583	/* Heap Entry */
		584	#if EV_HEAP_CACHE_AT
		585	/* a heap element */
		586	typedef struct {
		587	ev_tstamp at;
		588	WT w;
		589	} ANHE;
		590
		591	#define ANHE_w(he) (he).w /* access watcher, read-write */
		592	#define ANHE_at(he) (he).at /* access cached at, read-only */
		593	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		594	#else
		595	/* a heap element */
		596	typedef WT ANHE;
		597
		598	#define ANHE_w(he) (he)
		599	#define ANHE_at(he) (he)->at
		600	#define ANHE_at_cache(he)
431	#endif	601	#endif
432		602
433	#if EV_MULTIPLICITY	603	#if EV_MULTIPLICITY
434		604
435	struct ev_loop	605	struct ev_loop
…		…
454		624
455	static int ev_default_loop_ptr;	625	static int ev_default_loop_ptr;
456		626
457	#endif	627	#endif
458		628
		629	#if EV_MINIMAL < 2
		630	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		631	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		632	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		633	#else
		634	# define EV_RELEASE_CB (void)0
		635	# define EV_ACQUIRE_CB (void)0
		636	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		637	#endif
		638
		639	#define EVUNLOOP_RECURSE 0x80
		640
459	/*****************************************************************************/	641	/*****************************************************************************/
460		642
		643	#ifndef EV_HAVE_EV_TIME
461	ev_tstamp	644	ev_tstamp
462	ev_time (void)	645	ev_time (void)
463	{	646	{
464	#if EV_USE_REALTIME	647	#if EV_USE_REALTIME
		648	if (expect_true (have_realtime))
		649	{
465	struct timespec ts;	650	struct timespec ts;
466	clock_gettime (CLOCK_REALTIME, &ts);	651	clock_gettime (CLOCK_REALTIME, &ts);
467	return ts.tv_sec + ts.tv_nsec * 1e-9;	652	return ts.tv_sec + ts.tv_nsec * 1e-9;
468	#else	653	}
		654	#endif
		655
469	struct timeval tv;	656	struct timeval tv;
470	gettimeofday (&tv, 0);	657	gettimeofday (&tv, 0);
471	return tv.tv_sec + tv.tv_usec * 1e-6;	658	return tv.tv_sec + tv.tv_usec * 1e-6;
472	#endif
473	}	659	}
		660	#endif
474		661
475	ev_tstamp inline_size	662	inline_size ev_tstamp
476	get_clock (void)	663	get_clock (void)
477	{	664	{
478	#if EV_USE_MONOTONIC	665	#if EV_USE_MONOTONIC
479	if (expect_true (have_monotonic))	666	if (expect_true (have_monotonic))
480	{	667	{
…		…
513	struct timeval tv;	700	struct timeval tv;
514		701
515	tv.tv_sec = (time_t)delay;	702	tv.tv_sec = (time_t)delay;
516	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	703	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
517		704
		705	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		706	/* something not guaranteed by newer posix versions, but guaranteed */
		707	/* by older ones */
518	select (0, 0, 0, 0, &tv);	708	select (0, 0, 0, 0, &tv);
519	#endif	709	#endif
520	}	710	}
521	}	711	}
522		712
523	/*****************************************************************************/	713	/*****************************************************************************/
524		714
525	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	715	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
526		716
527	int inline_size	717	/* find a suitable new size for the given array, */
		718	/* hopefully by rounding to a ncie-to-malloc size */
		719	inline_size int
528	array_nextsize (int elem, int cur, int cnt)	720	array_nextsize (int elem, int cur, int cnt)
529	{	721	{
530	int ncur = cur + 1;	722	int ncur = cur + 1;
531		723
532	do	724	do
…		…
549	array_realloc (int elem, void *base, int *cur, int cnt)	741	array_realloc (int elem, void *base, int *cur, int cnt)
550	{	742	{
551	*cur = array_nextsize (elem, *cur, cnt);	743	*cur = array_nextsize (elem, *cur, cnt);
552	return ev_realloc (base, elem * *cur);	744	return ev_realloc (base, elem * *cur);
553	}	745	}
		746
		747	#define array_init_zero(base,count) \
		748	memset ((void *)(base), 0, sizeof (*(base)) * (count))
554		749
555	#define array_needsize(type,base,cur,cnt,init) \	750	#define array_needsize(type,base,cur,cnt,init) \
556	if (expect_false ((cnt) > (cur))) \	751	if (expect_false ((cnt) > (cur))) \
557	{ \	752	{ \
558	int ocur_ = (cur); \	753	int ocur_ = (cur); \
…		…
570	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	765	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
571	}	766	}
572	#endif	767	#endif
573		768
574	#define array_free(stem, idx) \	769	#define array_free(stem, idx) \
575	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	770	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
576		771
577	/*****************************************************************************/	772	/*****************************************************************************/
		773
		774	/* dummy callback for pending events */
		775	static void noinline
		776	pendingcb (EV_P_ ev_prepare *w, int revents)
		777	{
		778	}
578		779
579	void noinline	780	void noinline
580	ev_feed_event (EV_P_ void *w, int revents)	781	ev_feed_event (EV_P_ void *w, int revents)
581	{	782	{
582	W w_ = (W)w;	783	W w_ = (W)w;
…		…
591	pendings [pri][w_->pending - 1].w = w_;	792	pendings [pri][w_->pending - 1].w = w_;
592	pendings [pri][w_->pending - 1].events = revents;	793	pendings [pri][w_->pending - 1].events = revents;
593	}	794	}
594	}	795	}
595		796
596	void inline_speed	797	inline_speed void
		798	feed_reverse (EV_P_ W w)
		799	{
		800	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		801	rfeeds [rfeedcnt++] = w;
		802	}
		803
		804	inline_size void
		805	feed_reverse_done (EV_P_ int revents)
		806	{
		807	do
		808	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		809	while (rfeedcnt);
		810	}
		811
		812	inline_speed void
597	queue_events (EV_P_ W *events, int eventcnt, int type)	813	queue_events (EV_P_ W *events, int eventcnt, int type)
598	{	814	{
599	int i;	815	int i;
600		816
601	for (i = 0; i < eventcnt; ++i)	817	for (i = 0; i < eventcnt; ++i)
602	ev_feed_event (EV_A_ events [i], type);	818	ev_feed_event (EV_A_ events [i], type);
603	}	819	}
604		820
605	/*****************************************************************************/	821	/*****************************************************************************/
606		822
607	void inline_size	823	inline_speed void
608	anfds_init (ANFD *base, int count)
609	{
610	while (count--)
611	{
612	base->head = 0;
613	base->events = EV_NONE;
614	base->reify = 0;
615
616	++base;
617	}
618	}
619
620	void inline_speed
621	fd_event (EV_P_ int fd, int revents)	824	fd_event_nc (EV_P_ int fd, int revents)
622	{	825	{
623	ANFD *anfd = anfds + fd;	826	ANFD *anfd = anfds + fd;
624	ev_io *w;	827	ev_io *w;
625		828
626	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	829	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
630	if (ev)	833	if (ev)
631	ev_feed_event (EV_A_ (W)w, ev);	834	ev_feed_event (EV_A_ (W)w, ev);
632	}	835	}
633	}	836	}
634		837
		838	/* do not submit kernel events for fds that have reify set */
		839	/* because that means they changed while we were polling for new events */
		840	inline_speed void
		841	fd_event (EV_P_ int fd, int revents)
		842	{
		843	ANFD *anfd = anfds + fd;
		844
		845	if (expect_true (!anfd->reify))
		846	fd_event_nc (EV_A_ fd, revents);
		847	}
		848
635	void	849	void
636	ev_feed_fd_event (EV_P_ int fd, int revents)	850	ev_feed_fd_event (EV_P_ int fd, int revents)
637	{	851	{
638	if (fd >= 0 && fd < anfdmax)	852	if (fd >= 0 && fd < anfdmax)
639	fd_event (EV_A_ fd, revents);	853	fd_event_nc (EV_A_ fd, revents);
640	}	854	}
641		855
642	void inline_size	856	/* make sure the external fd watch events are in-sync */
		857	/* with the kernel/libev internal state */
		858	inline_size void
643	fd_reify (EV_P)	859	fd_reify (EV_P)
644	{	860	{
645	int i;	861	int i;
646		862
647	for (i = 0; i < fdchangecnt; ++i)	863	for (i = 0; i < fdchangecnt; ++i)
…		…
656	events |= (unsigned char)w->events;	872	events |= (unsigned char)w->events;
657		873
658	#if EV_SELECT_IS_WINSOCKET	874	#if EV_SELECT_IS_WINSOCKET
659	if (events)	875	if (events)
660	{	876	{
661	unsigned long argp;	877	unsigned long arg;
662	#ifdef EV_FD_TO_WIN32_HANDLE	878	#ifdef EV_FD_TO_WIN32_HANDLE
663	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	879	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
664	#else	880	#else
665	anfd->handle = _get_osfhandle (fd);	881	anfd->handle = _get_osfhandle (fd);
666	#endif	882	#endif
667	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	883	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
668	}	884	}
669	#endif	885	#endif
670		886
671	{	887	{
672	unsigned char o_events = anfd->events;	888	unsigned char o_events = anfd->events;
673	unsigned char o_reify = anfd->reify;	889	unsigned char o_reify = anfd->reify;
674		890
675	anfd->reify = 0;	891	anfd->reify = 0;
676	anfd->events = events;	892	anfd->events = events;
677		893
678	if (o_events != events || o_reify & EV_IOFDSET)	894	if (o_events != events || o_reify & EV__IOFDSET)
679	backend_modify (EV_A_ fd, o_events, events);	895	backend_modify (EV_A_ fd, o_events, events);
680	}	896	}
681	}	897	}
682		898
683	fdchangecnt = 0;	899	fdchangecnt = 0;
684	}	900	}
685		901
686	void inline_size	902	/* something about the given fd changed */
		903	inline_size void
687	fd_change (EV_P_ int fd, int flags)	904	fd_change (EV_P_ int fd, int flags)
688	{	905	{
689	unsigned char reify = anfds [fd].reify;	906	unsigned char reify = anfds [fd].reify;
690	anfds [fd].reify |= flags;	907	anfds [fd].reify |= flags;
691		908
…		…
695	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	912	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
696	fdchanges [fdchangecnt - 1] = fd;	913	fdchanges [fdchangecnt - 1] = fd;
697	}	914	}
698	}	915	}
699		916
700	void inline_speed	917	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		918	inline_speed void
701	fd_kill (EV_P_ int fd)	919	fd_kill (EV_P_ int fd)
702	{	920	{
703	ev_io *w;	921	ev_io *w;
704		922
705	while ((w = (ev_io *)anfds [fd].head))	923	while ((w = (ev_io *)anfds [fd].head))
…		…
707	ev_io_stop (EV_A_ w);	925	ev_io_stop (EV_A_ w);
708	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	926	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
709	}	927	}
710	}	928	}
711		929
712	int inline_size	930	/* check whether the given fd is atcually valid, for error recovery */
		931	inline_size int
713	fd_valid (int fd)	932	fd_valid (int fd)
714	{	933	{
715	#ifdef _WIN32	934	#ifdef _WIN32
716	return _get_osfhandle (fd) != -1;	935	return _get_osfhandle (fd) != -1;
717	#else	936	#else
…		…
725	{	944	{
726	int fd;	945	int fd;
727		946
728	for (fd = 0; fd < anfdmax; ++fd)	947	for (fd = 0; fd < anfdmax; ++fd)
729	if (anfds [fd].events)	948	if (anfds [fd].events)
730	if (!fd_valid (fd) == -1 && errno == EBADF)	949	if (!fd_valid (fd) && errno == EBADF)
731	fd_kill (EV_A_ fd);	950	fd_kill (EV_A_ fd);
732	}	951	}
733		952
734	/* called on ENOMEM in select/poll to kill some fds and retry */	953	/* called on ENOMEM in select/poll to kill some fds and retry */
735	static void noinline	954	static void noinline
…		…
753		972
754	for (fd = 0; fd < anfdmax; ++fd)	973	for (fd = 0; fd < anfdmax; ++fd)
755	if (anfds [fd].events)	974	if (anfds [fd].events)
756	{	975	{
757	anfds [fd].events = 0;	976	anfds [fd].events = 0;
		977	anfds [fd].emask = 0;
758	fd_change (EV_A_ fd, EV_IOFDSET | 1);	978	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
759	}	979	}
760	}	980	}
761		981
762	/*****************************************************************************/	982	/*****************************************************************************/
		983
		984	/*
		985	* the heap functions want a real array index. array index 0 uis guaranteed to not
		986	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		987	* the branching factor of the d-tree.
		988	*/
763		989
764	/*	990	/*
765	* at the moment we allow libev the luxury of two heaps,	991	* at the moment we allow libev the luxury of two heaps,
766	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap	992	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
767	* which is more cache-efficient.	993	* which is more cache-efficient.
768	* the difference is about 5% with 50000+ watchers.	994	* the difference is about 5% with 50000+ watchers.
769	*/	995	*/
770	#define USE_4HEAP !EV_MINIMAL
771	#if USE_4HEAP	996	#if EV_USE_4HEAP
772		997
773	#define DHEAP 4	998	#define DHEAP 4
774	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	999	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		1000	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		1001	#define UPHEAP_DONE(p,k) ((p) == (k))
775		1002
776	/* towards the root */	1003	/* away from the root */
777	void inline_speed	1004	inline_speed void
778	upheap (WT *heap, int k)	1005	downheap (ANHE *heap, int N, int k)
779	{	1006	{
780	WT w = heap [k];	1007	ANHE he = heap [k];
781	ev_tstamp w_at = w->at;	1008	ANHE *E = heap + N + HEAP0;
782		1009
783	for (;;)	1010	for (;;)
784	{	1011	{
785	int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
786
787	if (p == k || heap [p]->at <= w_at)
788	break;
789
790	heap [k] = heap [p];
791	ev_active (heap [k]) = k;
792	k = p;
793	}
794
795	heap [k] = w;
796	ev_active (heap [k]) = k;
797	}
798
799	/* away from the root */
800	void inline_speed
801	downheap (WT *heap, int N, int k)
802	{
803	WT w = heap [k];
804	WT *E = heap + N + HEAP0;
805
806	for (;;)
807	{
808	ev_tstamp minat;	1012	ev_tstamp minat;
809	WT *minpos;	1013	ANHE *minpos;
810	WT *pos = heap + DHEAP * (k - HEAP0) + HEAP0;	1014	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
811		1015
812	// find minimum child	1016	/* find minimum child */
813	if (expect_true (pos + DHEAP - 1 < E))	1017	if (expect_true (pos + DHEAP - 1 < E))
814	{	1018	{
815	/* fast path */ (minpos = pos + 0), (minat = (*minpos)->at);	1019	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
816	if (pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);	1020	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
817	if (pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);	1021	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
818	if (pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);	1022	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
819	}	1023	}
820	else if (pos < E)	1024	else if (pos < E)
821	{	1025	{
822	/* slow path */ (minpos = pos + 0), (minat = (*minpos)->at);	1026	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
823	if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);	1027	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
824	if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);	1028	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
825	if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);	1029	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
826	}	1030	}
827	else	1031	else
828	break;	1032	break;
829		1033
830	if (w->at <= minat)	1034	if (ANHE_at (he) <= minat)
831	break;	1035	break;
832		1036
833	ev_active (*minpos) = k;
834	heap [k] = *minpos;	1037	heap [k] = *minpos;
		1038	ev_active (ANHE_w (*minpos)) = k;
835		1039
836	k = minpos - heap;	1040	k = minpos - heap;
837	}	1041	}
838		1042
839	heap [k] = w;	1043	heap [k] = he;
840	ev_active (heap [k]) = k;	1044	ev_active (ANHE_w (he)) = k;
841	}	1045	}
842		1046
843	#else // 4HEAP	1047	#else /* 4HEAP */
844		1048
845	#define HEAP0 1	1049	#define HEAP0 1
		1050	#define HPARENT(k) ((k) >> 1)
		1051	#define UPHEAP_DONE(p,k) (!(p))
846		1052
847	/* towards the root */	1053	/* away from the root */
848	void inline_speed	1054	inline_speed void
849	upheap (WT *heap, int k)	1055	downheap (ANHE *heap, int N, int k)
850	{	1056	{
851	WT w = heap [k];	1057	ANHE he = heap [k];
852		1058
853	for (;;)	1059	for (;;)
854	{	1060	{
855	int p = k >> 1;	1061	int c = k << 1;
856		1062
857	/* maybe we could use a dummy element at heap [0]? */	1063	if (c > N + HEAP0 - 1)
858	if (!p || heap [p]->at <= w->at)
859	break;	1064	break;
860		1065
861	heap [k] = heap [p];	1066	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
862	ev_active (heap [k]) = k;	1067	? 1 : 0;
863	k = p;
864	}
865		1068
866	heap [k] = w;	1069	if (ANHE_at (he) <= ANHE_at (heap [c]))
867	ev_active (heap [k]) = k;
868	}
869
870	/* away from the root */
871	void inline_speed
872	downheap (WT *heap, int N, int k)
873	{
874	WT w = heap [k];
875
876	for (;;)
877	{
878	int c = k << 1;
879
880	if (c > N)
881	break;	1070	break;
882		1071
883	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
884	? 1 : 0;
885
886	if (w->at <= heap [c]->at)
887	break;
888
889	heap [k] = heap [c];	1072	heap [k] = heap [c];
890	((W)heap [k])->active = k;	1073	ev_active (ANHE_w (heap [k])) = k;
891		1074
892	k = c;	1075	k = c;
893	}	1076	}
894		1077
895	heap [k] = w;	1078	heap [k] = he;
		1079	ev_active (ANHE_w (he)) = k;
		1080	}
		1081	#endif
		1082
		1083	/* towards the root */
		1084	inline_speed void
		1085	upheap (ANHE *heap, int k)
		1086	{
		1087	ANHE he = heap [k];
		1088
		1089	for (;;)
		1090	{
		1091	int p = HPARENT (k);
		1092
		1093	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1094	break;
		1095
		1096	heap [k] = heap [p];
896	ev_active (heap [k]) = k;	1097	ev_active (ANHE_w (heap [k])) = k;
897	}	1098	k = p;
898	#endif	1099	}
899		1100
900	void inline_size	1101	heap [k] = he;
		1102	ev_active (ANHE_w (he)) = k;
		1103	}
		1104
		1105	/* move an element suitably so it is in a correct place */
		1106	inline_size void
901	adjustheap (WT *heap, int N, int k)	1107	adjustheap (ANHE *heap, int N, int k)
902	{	1108	{
		1109	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
903	upheap (heap, k);	1110	upheap (heap, k);
		1111	else
904	downheap (heap, N, k);	1112	downheap (heap, N, k);
		1113	}
		1114
		1115	/* rebuild the heap: this function is used only once and executed rarely */
		1116	inline_size void
		1117	reheap (ANHE *heap, int N)
		1118	{
		1119	int i;
		1120
		1121	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1122	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1123	for (i = 0; i < N; ++i)
		1124	upheap (heap, i + HEAP0);
905	}	1125	}
906		1126
907	/*****************************************************************************/	1127	/*****************************************************************************/
908		1128
		1129	/* associate signal watchers to a signal signal */
909	typedef struct	1130	typedef struct
910	{	1131	{
		1132	#if EV_MULTIPLICITY
		1133	EV_P;
		1134	#endif
911	WL head;	1135	WL head;
912	EV_ATOMIC_T gotsig;	1136	EV_ATOMIC_T gotsig;
913	} ANSIG;	1137	} ANSIG;
914		1138
915	static ANSIG *signals;	1139	static ANSIG signals [EV_NSIG - 1];
916	static int signalmax;
917
918	static EV_ATOMIC_T gotsig;	1140	static EV_ATOMIC_T gotsig;
919		1141
920	void inline_size
921	signals_init (ANSIG *base, int count)
922	{
923	while (count--)
924	{
925	base->head = 0;
926	base->gotsig = 0;
927
928	++base;
929	}
930	}
931
932	/*****************************************************************************/	1142	/*****************************************************************************/
933		1143
934	void inline_speed	1144	/* used to prepare libev internal fd's */
		1145	/* this is not fork-safe */
		1146	inline_speed void
935	fd_intern (int fd)	1147	fd_intern (int fd)
936	{	1148	{
937	#ifdef _WIN32	1149	#ifdef _WIN32
938	int arg = 1;	1150	unsigned long arg = 1;
939	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1151	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
940	#else	1152	#else
941	fcntl (fd, F_SETFD, FD_CLOEXEC);	1153	fcntl (fd, F_SETFD, FD_CLOEXEC);
942	fcntl (fd, F_SETFL, O_NONBLOCK);	1154	fcntl (fd, F_SETFL, O_NONBLOCK);
943	#endif	1155	#endif
944	}	1156	}
945		1157
946	static void noinline	1158	static void noinline
947	evpipe_init (EV_P)	1159	evpipe_init (EV_P)
948	{	1160	{
949	if (!ev_is_active (&pipeev))	1161	if (!ev_is_active (&pipe_w))
950	{	1162	{
951	#if EV_USE_EVENTFD	1163	#if EV_USE_EVENTFD
		1164	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1165	if (evfd < 0 && errno == EINVAL)
952	if ((evfd = eventfd (0, 0)) >= 0)	1166	evfd = eventfd (0, 0);
		1167
		1168	if (evfd >= 0)
953	{	1169	{
954	evpipe [0] = -1;	1170	evpipe [0] = -1;
955	fd_intern (evfd);	1171	fd_intern (evfd); /* doing it twice doesn't hurt */
956	ev_io_set (&pipeev, evfd, EV_READ);	1172	ev_io_set (&pipe_w, evfd, EV_READ);
957	}	1173	}
958	else	1174	else
959	#endif	1175	#endif
960	{	1176	{
961	while (pipe (evpipe))	1177	while (pipe (evpipe))
962	syserr ("(libev) error creating signal/async pipe");	1178	ev_syserr ("(libev) error creating signal/async pipe");
963		1179
964	fd_intern (evpipe [0]);	1180	fd_intern (evpipe [0]);
965	fd_intern (evpipe [1]);	1181	fd_intern (evpipe [1]);
966	ev_io_set (&pipeev, evpipe [0], EV_READ);	1182	ev_io_set (&pipe_w, evpipe [0], EV_READ);
967	}	1183	}
968		1184
969	ev_io_start (EV_A_ &pipeev);	1185	ev_io_start (EV_A_ &pipe_w);
970	ev_unref (EV_A); /* watcher should not keep loop alive */	1186	ev_unref (EV_A); /* watcher should not keep loop alive */
971	}	1187	}
972	}	1188	}
973		1189
974	void inline_size	1190	inline_size void
975	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1191	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
976	{	1192	{
977	if (!*flag)	1193	if (!*flag)
978	{	1194	{
979	int old_errno = errno; /* save errno because write might clobber it */	1195	int old_errno = errno; /* save errno because write might clobber it */
…		…
992		1208
993	errno = old_errno;	1209	errno = old_errno;
994	}	1210	}
995	}	1211	}
996		1212
		1213	/* called whenever the libev signal pipe */
		1214	/* got some events (signal, async) */
997	static void	1215	static void
998	pipecb (EV_P_ ev_io *iow, int revents)	1216	pipecb (EV_P_ ev_io *iow, int revents)
999	{	1217	{
1000	#if EV_USE_EVENTFD	1218	#if EV_USE_EVENTFD
1001	if (evfd >= 0)	1219	if (evfd >= 0)
…		…
1013	if (gotsig && ev_is_default_loop (EV_A))	1231	if (gotsig && ev_is_default_loop (EV_A))
1014	{	1232	{
1015	int signum;	1233	int signum;
1016	gotsig = 0;	1234	gotsig = 0;
1017		1235
1018	for (signum = signalmax; signum--; )	1236	for (signum = EV_NSIG - 1; signum--; )
1019	if (signals [signum].gotsig)	1237	if (signals [signum].gotsig)
1020	ev_feed_signal_event (EV_A_ signum + 1);	1238	ev_feed_signal_event (EV_A_ signum + 1);
1021	}	1239	}
1022		1240
1023	#if EV_ASYNC_ENABLE	1241	#if EV_ASYNC_ENABLE
…		…
1040		1258
1041	static void	1259	static void
1042	ev_sighandler (int signum)	1260	ev_sighandler (int signum)
1043	{	1261	{
1044	#if EV_MULTIPLICITY	1262	#if EV_MULTIPLICITY
1045	struct ev_loop *loop = &default_loop_struct;	1263	EV_P = signals [signum - 1].loop;
1046	#endif	1264	#endif
1047		1265
1048	#if _WIN32	1266	#if _WIN32
1049	signal (signum, ev_sighandler);	1267	signal (signum, ev_sighandler);
1050	#endif	1268	#endif
…		…
1057	ev_feed_signal_event (EV_P_ int signum)	1275	ev_feed_signal_event (EV_P_ int signum)
1058	{	1276	{
1059	WL w;	1277	WL w;
1060		1278
1061	#if EV_MULTIPLICITY	1279	#if EV_MULTIPLICITY
1062	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1280	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1063	#endif	1281	#endif
		1282
		1283	if (signum <= 0 || signum > EV_NSIG)
		1284	return;
1064		1285
1065	--signum;	1286	--signum;
1066
1067	if (signum < 0 || signum >= signalmax)
1068	return;
1069		1287
1070	signals [signum].gotsig = 0;	1288	signals [signum].gotsig = 0;
1071		1289
1072	for (w = signals [signum].head; w; w = w->next)	1290	for (w = signals [signum].head; w; w = w->next)
1073	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1291	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1074	}	1292	}
1075		1293
		1294	#if EV_USE_SIGNALFD
		1295	static void
		1296	sigfdcb (EV_P_ ev_io *iow, int revents)
		1297	{
		1298	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1299
		1300	for (;;)
		1301	{
		1302	ssize_t res = read (sigfd, si, sizeof (si));
		1303
		1304	/* not ISO-C, as res might be -1, but works with SuS */
		1305	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1306	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1307
		1308	if (res < (ssize_t)sizeof (si))
		1309	break;
		1310	}
		1311	}
		1312	#endif
		1313
1076	/*****************************************************************************/	1314	/*****************************************************************************/
1077		1315
1078	static WL childs [EV_PID_HASHSIZE];	1316	static WL childs [EV_PID_HASHSIZE];
1079		1317
1080	#ifndef _WIN32	1318	#ifndef _WIN32
…		…
1083		1321
1084	#ifndef WIFCONTINUED	1322	#ifndef WIFCONTINUED
1085	# define WIFCONTINUED(status) 0	1323	# define WIFCONTINUED(status) 0
1086	#endif	1324	#endif
1087		1325
1088	void inline_speed	1326	/* handle a single child status event */
		1327	inline_speed void
1089	child_reap (EV_P_ int chain, int pid, int status)	1328	child_reap (EV_P_ int chain, int pid, int status)
1090	{	1329	{
1091	ev_child *w;	1330	ev_child *w;
1092	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1331	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1093		1332
…		…
1106		1345
1107	#ifndef WCONTINUED	1346	#ifndef WCONTINUED
1108	# define WCONTINUED 0	1347	# define WCONTINUED 0
1109	#endif	1348	#endif
1110		1349
		1350	/* called on sigchld etc., calls waitpid */
1111	static void	1351	static void
1112	childcb (EV_P_ ev_signal *sw, int revents)	1352	childcb (EV_P_ ev_signal *sw, int revents)
1113	{	1353	{
1114	int pid, status;	1354	int pid, status;
1115		1355
…		…
1196	/* kqueue is borked on everything but netbsd apparently */	1436	/* kqueue is borked on everything but netbsd apparently */
1197	/* it usually doesn't work correctly on anything but sockets and pipes */	1437	/* it usually doesn't work correctly on anything but sockets and pipes */
1198	flags &= ~EVBACKEND_KQUEUE;	1438	flags &= ~EVBACKEND_KQUEUE;
1199	#endif	1439	#endif
1200	#ifdef __APPLE__	1440	#ifdef __APPLE__
1201	// flags &= ~EVBACKEND_KQUEUE; for documentation	1441	/* only select works correctly on that "unix-certified" platform */
1202	flags &= ~EVBACKEND_POLL;	1442	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1443	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1203	#endif	1444	#endif
1204		1445
1205	return flags;	1446	return flags;
1206	}	1447	}
1207		1448
…		…
1221	ev_backend (EV_P)	1462	ev_backend (EV_P)
1222	{	1463	{
1223	return backend;	1464	return backend;
1224	}	1465	}
1225		1466
		1467	#if EV_MINIMAL < 2
1226	unsigned int	1468	unsigned int
1227	ev_loop_count (EV_P)	1469	ev_loop_count (EV_P)
1228	{	1470	{
1229	return loop_count;	1471	return loop_count;
1230	}	1472	}
1231		1473
		1474	unsigned int
		1475	ev_loop_depth (EV_P)
		1476	{
		1477	return loop_depth;
		1478	}
		1479
1232	void	1480	void
1233	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1481	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1234	{	1482	{
1235	io_blocktime = interval;	1483	io_blocktime = interval;
1236	}	1484	}
…		…
1239	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1487	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1240	{	1488	{
1241	timeout_blocktime = interval;	1489	timeout_blocktime = interval;
1242	}	1490	}
1243		1491
		1492	void
		1493	ev_set_userdata (EV_P_ void *data)
		1494	{
		1495	userdata = data;
		1496	}
		1497
		1498	void *
		1499	ev_userdata (EV_P)
		1500	{
		1501	return userdata;
		1502	}
		1503
		1504	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1505	{
		1506	invoke_cb = invoke_pending_cb;
		1507	}
		1508
		1509	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1510	{
		1511	release_cb = release;
		1512	acquire_cb = acquire;
		1513	}
		1514	#endif
		1515
		1516	/* initialise a loop structure, must be zero-initialised */
1244	static void noinline	1517	static void noinline
1245	loop_init (EV_P_ unsigned int flags)	1518	loop_init (EV_P_ unsigned int flags)
1246	{	1519	{
1247	if (!backend)	1520	if (!backend)
1248	{	1521	{
		1522	#if EV_USE_REALTIME
		1523	if (!have_realtime)
		1524	{
		1525	struct timespec ts;
		1526
		1527	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1528	have_realtime = 1;
		1529	}
		1530	#endif
		1531
1249	#if EV_USE_MONOTONIC	1532	#if EV_USE_MONOTONIC
		1533	if (!have_monotonic)
1250	{	1534	{
1251	struct timespec ts;	1535	struct timespec ts;
		1536
1252	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1537	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1253	have_monotonic = 1;	1538	have_monotonic = 1;
1254	}	1539	}
1255	#endif	1540	#endif
		1541
		1542	/* pid check not overridable via env */
		1543	#ifndef _WIN32
		1544	if (flags & EVFLAG_FORKCHECK)
		1545	curpid = getpid ();
		1546	#endif
		1547
		1548	if (!(flags & EVFLAG_NOENV)
		1549	&& !enable_secure ()
		1550	&& getenv ("LIBEV_FLAGS"))
		1551	flags = atoi (getenv ("LIBEV_FLAGS"));
1256		1552
1257	ev_rt_now = ev_time ();	1553	ev_rt_now = ev_time ();
1258	mn_now = get_clock ();	1554	mn_now = get_clock ();
1259	now_floor = mn_now;	1555	now_floor = mn_now;
1260	rtmn_diff = ev_rt_now - mn_now;	1556	rtmn_diff = ev_rt_now - mn_now;
		1557	#if EV_MINIMAL < 2
		1558	invoke_cb = ev_invoke_pending;
		1559	#endif
1261		1560
1262	io_blocktime = 0.;	1561	io_blocktime = 0.;
1263	timeout_blocktime = 0.;	1562	timeout_blocktime = 0.;
1264	backend = 0;	1563	backend = 0;
1265	backend_fd = -1;	1564	backend_fd = -1;
1266	gotasync = 0;	1565	gotasync = 0;
1267	#if EV_USE_INOTIFY	1566	#if EV_USE_INOTIFY
1268	fs_fd = -2;	1567	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1269	#endif	1568	#endif
1270		1569	#if EV_USE_SIGNALFD
1271	/* pid check not overridable via env */	1570	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1272	#ifndef _WIN32
1273	if (flags & EVFLAG_FORKCHECK)
1274	curpid = getpid ();
1275	#endif	1571	#endif
1276
1277	if (!(flags & EVFLAG_NOENV)
1278	&& !enable_secure ()
1279	&& getenv ("LIBEV_FLAGS"))
1280	flags = atoi (getenv ("LIBEV_FLAGS"));
1281		1572
1282	if (!(flags & 0x0000ffffU))	1573	if (!(flags & 0x0000ffffU))
1283	flags |= ev_recommended_backends ();	1574	flags |= ev_recommended_backends ();
1284		1575
1285	#if EV_USE_PORT	1576	#if EV_USE_PORT
…		…
1296	#endif	1587	#endif
1297	#if EV_USE_SELECT	1588	#if EV_USE_SELECT
1298	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1589	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1299	#endif	1590	#endif
1300		1591
		1592	ev_prepare_init (&pending_w, pendingcb);
		1593
1301	ev_init (&pipeev, pipecb);	1594	ev_init (&pipe_w, pipecb);
1302	ev_set_priority (&pipeev, EV_MAXPRI);	1595	ev_set_priority (&pipe_w, EV_MAXPRI);
1303	}	1596	}
1304	}	1597	}
1305		1598
		1599	/* free up a loop structure */
1306	static void noinline	1600	static void noinline
1307	loop_destroy (EV_P)	1601	loop_destroy (EV_P)
1308	{	1602	{
1309	int i;	1603	int i;
1310		1604
1311	if (ev_is_active (&pipeev))	1605	if (ev_is_active (&pipe_w))
1312	{	1606	{
1313	ev_ref (EV_A); /* signal watcher */	1607	/*ev_ref (EV_A);*/
1314	ev_io_stop (EV_A_ &pipeev);	1608	/*ev_io_stop (EV_A_ &pipe_w);*/
1315		1609
1316	#if EV_USE_EVENTFD	1610	#if EV_USE_EVENTFD
1317	if (evfd >= 0)	1611	if (evfd >= 0)
1318	close (evfd);	1612	close (evfd);
1319	#endif	1613	#endif
…		…
1323	close (evpipe [0]);	1617	close (evpipe [0]);
1324	close (evpipe [1]);	1618	close (evpipe [1]);
1325	}	1619	}
1326	}	1620	}
1327		1621
		1622	#if EV_USE_SIGNALFD
		1623	if (ev_is_active (&sigfd_w))
		1624	{
		1625	/*ev_ref (EV_A);*/
		1626	/*ev_io_stop (EV_A_ &sigfd_w);*/
		1627
		1628	close (sigfd);
		1629	}
		1630	#endif
		1631
1328	#if EV_USE_INOTIFY	1632	#if EV_USE_INOTIFY
1329	if (fs_fd >= 0)	1633	if (fs_fd >= 0)
1330	close (fs_fd);	1634	close (fs_fd);
1331	#endif	1635	#endif
1332		1636
…		…
1355	#if EV_IDLE_ENABLE	1659	#if EV_IDLE_ENABLE
1356	array_free (idle, [i]);	1660	array_free (idle, [i]);
1357	#endif	1661	#endif
1358	}	1662	}
1359		1663
1360	ev_free (anfds); anfdmax = 0;	1664	ev_free (anfds); anfds = 0; anfdmax = 0;
1361		1665
1362	/* have to use the microsoft-never-gets-it-right macro */	1666	/* have to use the microsoft-never-gets-it-right macro */
		1667	array_free (rfeed, EMPTY);
1363	array_free (fdchange, EMPTY);	1668	array_free (fdchange, EMPTY);
1364	array_free (timer, EMPTY);	1669	array_free (timer, EMPTY);
1365	#if EV_PERIODIC_ENABLE	1670	#if EV_PERIODIC_ENABLE
1366	array_free (periodic, EMPTY);	1671	array_free (periodic, EMPTY);
1367	#endif	1672	#endif
…		…
1376		1681
1377	backend = 0;	1682	backend = 0;
1378	}	1683	}
1379		1684
1380	#if EV_USE_INOTIFY	1685	#if EV_USE_INOTIFY
1381	void inline_size infy_fork (EV_P);	1686	inline_size void infy_fork (EV_P);
1382	#endif	1687	#endif
1383		1688
1384	void inline_size	1689	inline_size void
1385	loop_fork (EV_P)	1690	loop_fork (EV_P)
1386	{	1691	{
1387	#if EV_USE_PORT	1692	#if EV_USE_PORT
1388	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1693	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1389	#endif	1694	#endif
…		…
1395	#endif	1700	#endif
1396	#if EV_USE_INOTIFY	1701	#if EV_USE_INOTIFY
1397	infy_fork (EV_A);	1702	infy_fork (EV_A);
1398	#endif	1703	#endif
1399		1704
1400	if (ev_is_active (&pipeev))	1705	if (ev_is_active (&pipe_w))
1401	{	1706	{
1402	/* this "locks" the handlers against writing to the pipe */	1707	/* this "locks" the handlers against writing to the pipe */
1403	/* while we modify the fd vars */	1708	/* while we modify the fd vars */
1404	gotsig = 1;	1709	gotsig = 1;
1405	#if EV_ASYNC_ENABLE	1710	#if EV_ASYNC_ENABLE
1406	gotasync = 1;	1711	gotasync = 1;
1407	#endif	1712	#endif
1408		1713
1409	ev_ref (EV_A);	1714	ev_ref (EV_A);
1410	ev_io_stop (EV_A_ &pipeev);	1715	ev_io_stop (EV_A_ &pipe_w);
1411		1716
1412	#if EV_USE_EVENTFD	1717	#if EV_USE_EVENTFD
1413	if (evfd >= 0)	1718	if (evfd >= 0)
1414	close (evfd);	1719	close (evfd);
1415	#endif	1720	#endif
…		…
1420	close (evpipe [1]);	1725	close (evpipe [1]);
1421	}	1726	}
1422		1727
1423	evpipe_init (EV_A);	1728	evpipe_init (EV_A);
1424	/* now iterate over everything, in case we missed something */	1729	/* now iterate over everything, in case we missed something */
1425	pipecb (EV_A_ &pipeev, EV_READ);	1730	pipecb (EV_A_ &pipe_w, EV_READ);
1426	}	1731	}
1427		1732
1428	postfork = 0;	1733	postfork = 0;
1429	}	1734	}
1430		1735
1431	#if EV_MULTIPLICITY	1736	#if EV_MULTIPLICITY
		1737
1432	struct ev_loop *	1738	struct ev_loop *
1433	ev_loop_new (unsigned int flags)	1739	ev_loop_new (unsigned int flags)
1434	{	1740	{
1435	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1741	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1436		1742
1437	memset (loop, 0, sizeof (struct ev_loop));	1743	memset (EV_A, 0, sizeof (struct ev_loop));
1438
1439	loop_init (EV_A_ flags);	1744	loop_init (EV_A_ flags);
1440		1745
1441	if (ev_backend (EV_A))	1746	if (ev_backend (EV_A))
1442	return loop;	1747	return EV_A;
1443		1748
1444	return 0;	1749	return 0;
1445	}	1750	}
1446		1751
1447	void	1752	void
…		…
1453		1758
1454	void	1759	void
1455	ev_loop_fork (EV_P)	1760	ev_loop_fork (EV_P)
1456	{	1761	{
1457	postfork = 1; /* must be in line with ev_default_fork */	1762	postfork = 1; /* must be in line with ev_default_fork */
		1763	}
		1764	#endif /* multiplicity */
		1765
		1766	#if EV_VERIFY
		1767	static void noinline
		1768	verify_watcher (EV_P_ W w)
		1769	{
		1770	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1771
		1772	if (w->pending)
		1773	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1774	}
		1775
		1776	static void noinline
		1777	verify_heap (EV_P_ ANHE *heap, int N)
		1778	{
		1779	int i;
		1780
		1781	for (i = HEAP0; i < N + HEAP0; ++i)
		1782	{
		1783	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1784	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1785	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1786
		1787	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1788	}
		1789	}
		1790
		1791	static void noinline
		1792	array_verify (EV_P_ W *ws, int cnt)
		1793	{
		1794	while (cnt--)
		1795	{
		1796	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1797	verify_watcher (EV_A_ ws [cnt]);
		1798	}
		1799	}
		1800	#endif
		1801
		1802	#if EV_MINIMAL < 2
		1803	void
		1804	ev_loop_verify (EV_P)
		1805	{
		1806	#if EV_VERIFY
		1807	int i;
		1808	WL w;
		1809
		1810	assert (activecnt >= -1);
		1811
		1812	assert (fdchangemax >= fdchangecnt);
		1813	for (i = 0; i < fdchangecnt; ++i)
		1814	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1815
		1816	assert (anfdmax >= 0);
		1817	for (i = 0; i < anfdmax; ++i)
		1818	for (w = anfds [i].head; w; w = w->next)
		1819	{
		1820	verify_watcher (EV_A_ (W)w);
		1821	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1822	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1823	}
		1824
		1825	assert (timermax >= timercnt);
		1826	verify_heap (EV_A_ timers, timercnt);
		1827
		1828	#if EV_PERIODIC_ENABLE
		1829	assert (periodicmax >= periodiccnt);
		1830	verify_heap (EV_A_ periodics, periodiccnt);
		1831	#endif
		1832
		1833	for (i = NUMPRI; i--; )
		1834	{
		1835	assert (pendingmax [i] >= pendingcnt [i]);
		1836	#if EV_IDLE_ENABLE
		1837	assert (idleall >= 0);
		1838	assert (idlemax [i] >= idlecnt [i]);
		1839	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1840	#endif
		1841	}
		1842
		1843	#if EV_FORK_ENABLE
		1844	assert (forkmax >= forkcnt);
		1845	array_verify (EV_A_ (W *)forks, forkcnt);
		1846	#endif
		1847
		1848	#if EV_ASYNC_ENABLE
		1849	assert (asyncmax >= asynccnt);
		1850	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1851	#endif
		1852
		1853	assert (preparemax >= preparecnt);
		1854	array_verify (EV_A_ (W *)prepares, preparecnt);
		1855
		1856	assert (checkmax >= checkcnt);
		1857	array_verify (EV_A_ (W *)checks, checkcnt);
		1858
		1859	# if 0
		1860	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1861	for (signum = EV_NSIG; signum--; ) if (signals [signum].gotsig)
		1862	# endif
		1863	#endif
1458	}	1864	}
1459	#endif	1865	#endif
1460		1866
1461	#if EV_MULTIPLICITY	1867	#if EV_MULTIPLICITY
1462	struct ev_loop *	1868	struct ev_loop *
…		…
1467	#endif	1873	#endif
1468	{	1874	{
1469	if (!ev_default_loop_ptr)	1875	if (!ev_default_loop_ptr)
1470	{	1876	{
1471	#if EV_MULTIPLICITY	1877	#if EV_MULTIPLICITY
1472	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1878	EV_P = ev_default_loop_ptr = &default_loop_struct;
1473	#else	1879	#else
1474	ev_default_loop_ptr = 1;	1880	ev_default_loop_ptr = 1;
1475	#endif	1881	#endif
1476		1882
1477	loop_init (EV_A_ flags);	1883	loop_init (EV_A_ flags);
…		…
1494		1900
1495	void	1901	void
1496	ev_default_destroy (void)	1902	ev_default_destroy (void)
1497	{	1903	{
1498	#if EV_MULTIPLICITY	1904	#if EV_MULTIPLICITY
1499	struct ev_loop *loop = ev_default_loop_ptr;	1905	EV_P = ev_default_loop_ptr;
1500	#endif	1906	#endif
		1907
		1908	ev_default_loop_ptr = 0;
1501		1909
1502	#ifndef _WIN32	1910	#ifndef _WIN32
1503	ev_ref (EV_A); /* child watcher */	1911	ev_ref (EV_A); /* child watcher */
1504	ev_signal_stop (EV_A_ &childev);	1912	ev_signal_stop (EV_A_ &childev);
1505	#endif	1913	#endif
…		…
1509		1917
1510	void	1918	void
1511	ev_default_fork (void)	1919	ev_default_fork (void)
1512	{	1920	{
1513	#if EV_MULTIPLICITY	1921	#if EV_MULTIPLICITY
1514	struct ev_loop *loop = ev_default_loop_ptr;	1922	EV_P = ev_default_loop_ptr;
1515	#endif	1923	#endif
1516		1924
1517	if (backend)
1518	postfork = 1; /* must be in line with ev_loop_fork */	1925	postfork = 1; /* must be in line with ev_loop_fork */
1519	}	1926	}
1520		1927
1521	/*****************************************************************************/	1928	/*****************************************************************************/
1522		1929
1523	void	1930	void
1524	ev_invoke (EV_P_ void *w, int revents)	1931	ev_invoke (EV_P_ void *w, int revents)
1525	{	1932	{
1526	EV_CB_INVOKE ((W)w, revents);	1933	EV_CB_INVOKE ((W)w, revents);
1527	}	1934	}
1528		1935
1529	void inline_speed	1936	unsigned int
1530	call_pending (EV_P)	1937	ev_pending_count (EV_P)
		1938	{
		1939	int pri;
		1940	unsigned int count = 0;
		1941
		1942	for (pri = NUMPRI; pri--; )
		1943	count += pendingcnt [pri];
		1944
		1945	return count;
		1946	}
		1947
		1948	void noinline
		1949	ev_invoke_pending (EV_P)
1531	{	1950	{
1532	int pri;	1951	int pri;
1533		1952
1534	for (pri = NUMPRI; pri--; )	1953	for (pri = NUMPRI; pri--; )
1535	while (pendingcnt [pri])	1954	while (pendingcnt [pri])
1536	{	1955	{
1537	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1956	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1538		1957
1539	if (expect_true (p->w))
1540	{
1541	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1958	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1959	/* ^ this is no longer true, as pending_w could be here */
1542		1960
1543	p->w->pending = 0;	1961	p->w->pending = 0;
1544	EV_CB_INVOKE (p->w, p->events);	1962	EV_CB_INVOKE (p->w, p->events);
1545	}	1963	EV_FREQUENT_CHECK;
1546	}	1964	}
1547	}	1965	}
1548		1966
1549	#if EV_IDLE_ENABLE	1967	#if EV_IDLE_ENABLE
1550	void inline_size	1968	/* make idle watchers pending. this handles the "call-idle */
		1969	/* only when higher priorities are idle" logic */
		1970	inline_size void
1551	idle_reify (EV_P)	1971	idle_reify (EV_P)
1552	{	1972	{
1553	if (expect_false (idleall))	1973	if (expect_false (idleall))
1554	{	1974	{
1555	int pri;	1975	int pri;
…		…
1567	}	1987	}
1568	}	1988	}
1569	}	1989	}
1570	#endif	1990	#endif
1571		1991
1572	void inline_size	1992	/* make timers pending */
		1993	inline_size void
1573	timers_reify (EV_P)	1994	timers_reify (EV_P)
1574	{	1995	{
		1996	EV_FREQUENT_CHECK;
		1997
1575	while (timercnt && ev_at (timers [HEAP0]) <= mn_now)	1998	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1576	{	1999	{
1577	ev_timer *w = (ev_timer *)timers [HEAP0];	2000	do
1578
1579	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1580
1581	/* first reschedule or stop timer */
1582	if (w->repeat)
1583	{	2001	{
		2002	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2003
		2004	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2005
		2006	/* first reschedule or stop timer */
		2007	if (w->repeat)
		2008	{
		2009	ev_at (w) += w->repeat;
		2010	if (ev_at (w) < mn_now)
		2011	ev_at (w) = mn_now;
		2012
1584	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	2013	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1585		2014
1586	ev_at (w) += w->repeat;	2015	ANHE_at_cache (timers [HEAP0]);
1587	if (ev_at (w) < mn_now)
1588	ev_at (w) = mn_now;
1589
1590	downheap (timers, timercnt, HEAP0);	2016	downheap (timers, timercnt, HEAP0);
		2017	}
		2018	else
		2019	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2020
		2021	EV_FREQUENT_CHECK;
		2022	feed_reverse (EV_A_ (W)w);
1591	}	2023	}
1592	else	2024	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1593	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1594		2025
1595	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	2026	feed_reverse_done (EV_A_ EV_TIMEOUT);
1596	}	2027	}
1597	}	2028	}
1598		2029
1599	#if EV_PERIODIC_ENABLE	2030	#if EV_PERIODIC_ENABLE
1600	void inline_size	2031	/* make periodics pending */
		2032	inline_size void
1601	periodics_reify (EV_P)	2033	periodics_reify (EV_P)
1602	{	2034	{
		2035	EV_FREQUENT_CHECK;
		2036
1603	while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now)	2037	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1604	{	2038	{
1605	ev_periodic *w = (ev_periodic *)periodics [HEAP0];	2039	int feed_count = 0;
1606		2040
1607	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	2041	do
1608
1609	/* first reschedule or stop timer */
1610	if (w->reschedule_cb)
1611	{	2042	{
		2043	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2044
		2045	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2046
		2047	/* first reschedule or stop timer */
		2048	if (w->reschedule_cb)
		2049	{
1612	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);	2050	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2051
1613	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));	2052	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		2053
		2054	ANHE_at_cache (periodics [HEAP0]);
1614	downheap (periodics, periodiccnt, 1);	2055	downheap (periodics, periodiccnt, HEAP0);
		2056	}
		2057	else if (w->interval)
		2058	{
		2059	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2060	/* if next trigger time is not sufficiently in the future, put it there */
		2061	/* this might happen because of floating point inexactness */
		2062	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2063	{
		2064	ev_at (w) += w->interval;
		2065
		2066	/* if interval is unreasonably low we might still have a time in the past */
		2067	/* so correct this. this will make the periodic very inexact, but the user */
		2068	/* has effectively asked to get triggered more often than possible */
		2069	if (ev_at (w) < ev_rt_now)
		2070	ev_at (w) = ev_rt_now;
		2071	}
		2072
		2073	ANHE_at_cache (periodics [HEAP0]);
		2074	downheap (periodics, periodiccnt, HEAP0);
		2075	}
		2076	else
		2077	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2078
		2079	EV_FREQUENT_CHECK;
		2080	feed_reverse (EV_A_ (W)w);
1615	}	2081	}
1616	else if (w->interval)	2082	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1617	{
1618	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1619	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1620	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1621	downheap (periodics, periodiccnt, HEAP0);
1622	}
1623	else
1624	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1625		2083
1626	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	2084	feed_reverse_done (EV_A_ EV_PERIODIC);
1627	}	2085	}
1628	}	2086	}
1629		2087
		2088	/* simply recalculate all periodics */
		2089	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1630	static void noinline	2090	static void noinline
1631	periodics_reschedule (EV_P)	2091	periodics_reschedule (EV_P)
1632	{	2092	{
1633	int i;	2093	int i;
1634		2094
1635	/* adjust periodics after time jump */	2095	/* adjust periodics after time jump */
1636	for (i = 1; i <= periodiccnt; ++i)	2096	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1637	{	2097	{
1638	ev_periodic *w = (ev_periodic *)periodics [i];	2098	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1639		2099
1640	if (w->reschedule_cb)	2100	if (w->reschedule_cb)
1641	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2101	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1642	else if (w->interval)	2102	else if (w->interval)
1643	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2103	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2104
		2105	ANHE_at_cache (periodics [i]);
		2106	}
		2107
		2108	reheap (periodics, periodiccnt);
		2109	}
		2110	#endif
		2111
		2112	/* adjust all timers by a given offset */
		2113	static void noinline
		2114	timers_reschedule (EV_P_ ev_tstamp adjust)
		2115	{
		2116	int i;
		2117
		2118	for (i = 0; i < timercnt; ++i)
1644	}	2119	{
1645		2120	ANHE *he = timers + i + HEAP0;
1646	/* now rebuild the heap */	2121	ANHE_w (*he)->at += adjust;
1647	for (i = periodiccnt >> 1; --i; )	2122	ANHE_at_cache (*he);
1648	downheap (periodics, periodiccnt, i + HEAP0);	2123	}
1649	}	2124	}
1650	#endif
1651		2125
1652	void inline_speed	2126	/* fetch new monotonic and realtime times from the kernel */
		2127	/* also detetc if there was a timejump, and act accordingly */
		2128	inline_speed void
1653	time_update (EV_P_ ev_tstamp max_block)	2129	time_update (EV_P_ ev_tstamp max_block)
1654	{	2130	{
1655	int i;
1656
1657	#if EV_USE_MONOTONIC	2131	#if EV_USE_MONOTONIC
1658	if (expect_true (have_monotonic))	2132	if (expect_true (have_monotonic))
1659	{	2133	{
		2134	int i;
1660	ev_tstamp odiff = rtmn_diff;	2135	ev_tstamp odiff = rtmn_diff;
1661		2136
1662	mn_now = get_clock ();	2137	mn_now = get_clock ();
1663		2138
1664	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2139	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1690	ev_rt_now = ev_time ();	2165	ev_rt_now = ev_time ();
1691	mn_now = get_clock ();	2166	mn_now = get_clock ();
1692	now_floor = mn_now;	2167	now_floor = mn_now;
1693	}	2168	}
1694		2169
		2170	/* no timer adjustment, as the monotonic clock doesn't jump */
		2171	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1695	# if EV_PERIODIC_ENABLE	2172	# if EV_PERIODIC_ENABLE
1696	periodics_reschedule (EV_A);	2173	periodics_reschedule (EV_A);
1697	# endif	2174	# endif
1698	/* no timer adjustment, as the monotonic clock doesn't jump */
1699	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1700	}	2175	}
1701	else	2176	else
1702	#endif	2177	#endif
1703	{	2178	{
1704	ev_rt_now = ev_time ();	2179	ev_rt_now = ev_time ();
1705		2180
1706	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2181	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1707	{	2182	{
		2183	/* adjust timers. this is easy, as the offset is the same for all of them */
		2184	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1708	#if EV_PERIODIC_ENABLE	2185	#if EV_PERIODIC_ENABLE
1709	periodics_reschedule (EV_A);	2186	periodics_reschedule (EV_A);
1710	#endif	2187	#endif
1711	/* adjust timers. this is easy, as the offset is the same for all of them */
1712	for (i = 1; i <= timercnt; ++i)
1713	ev_at (timers [i]) += ev_rt_now - mn_now;
1714	}	2188	}
1715		2189
1716	mn_now = ev_rt_now;	2190	mn_now = ev_rt_now;
1717	}	2191	}
1718	}	2192	}
1719		2193
1720	void	2194	void
1721	ev_ref (EV_P)
1722	{
1723	++activecnt;
1724	}
1725
1726	void
1727	ev_unref (EV_P)
1728	{
1729	--activecnt;
1730	}
1731
1732	static int loop_done;
1733
1734	void
1735	ev_loop (EV_P_ int flags)	2195	ev_loop (EV_P_ int flags)
1736	{	2196	{
		2197	#if EV_MINIMAL < 2
		2198	++loop_depth;
		2199	#endif
		2200
		2201	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2202
1737	loop_done = EVUNLOOP_CANCEL;	2203	loop_done = EVUNLOOP_CANCEL;
1738		2204
1739	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2205	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1740		2206
1741	do	2207	do
1742	{	2208	{
		2209	#if EV_VERIFY >= 2
		2210	ev_loop_verify (EV_A);
		2211	#endif
		2212
1743	#ifndef _WIN32	2213	#ifndef _WIN32
1744	if (expect_false (curpid)) /* penalise the forking check even more */	2214	if (expect_false (curpid)) /* penalise the forking check even more */
1745	if (expect_false (getpid () != curpid))	2215	if (expect_false (getpid () != curpid))
1746	{	2216	{
1747	curpid = getpid ();	2217	curpid = getpid ();
…		…
1753	/* we might have forked, so queue fork handlers */	2223	/* we might have forked, so queue fork handlers */
1754	if (expect_false (postfork))	2224	if (expect_false (postfork))
1755	if (forkcnt)	2225	if (forkcnt)
1756	{	2226	{
1757	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2227	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1758	call_pending (EV_A);	2228	EV_INVOKE_PENDING;
1759	}	2229	}
1760	#endif	2230	#endif
1761		2231
1762	/* queue prepare watchers (and execute them) */	2232	/* queue prepare watchers (and execute them) */
1763	if (expect_false (preparecnt))	2233	if (expect_false (preparecnt))
1764	{	2234	{
1765	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2235	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1766	call_pending (EV_A);	2236	EV_INVOKE_PENDING;
1767	}	2237	}
1768		2238
1769	if (expect_false (!activecnt))	2239	if (expect_false (loop_done))
1770	break;	2240	break;
1771		2241
1772	/* we might have forked, so reify kernel state if necessary */	2242	/* we might have forked, so reify kernel state if necessary */
1773	if (expect_false (postfork))	2243	if (expect_false (postfork))
1774	loop_fork (EV_A);	2244	loop_fork (EV_A);
…		…
1781	ev_tstamp waittime = 0.;	2251	ev_tstamp waittime = 0.;
1782	ev_tstamp sleeptime = 0.;	2252	ev_tstamp sleeptime = 0.;
1783		2253
1784	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2254	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1785	{	2255	{
		2256	/* remember old timestamp for io_blocktime calculation */
		2257	ev_tstamp prev_mn_now = mn_now;
		2258
1786	/* update time to cancel out callback processing overhead */	2259	/* update time to cancel out callback processing overhead */
1787	time_update (EV_A_ 1e100);	2260	time_update (EV_A_ 1e100);
1788		2261
1789	waittime = MAX_BLOCKTIME;	2262	waittime = MAX_BLOCKTIME;
1790		2263
1791	if (timercnt)	2264	if (timercnt)
1792	{	2265	{
1793	ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge;	2266	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1794	if (waittime > to) waittime = to;	2267	if (waittime > to) waittime = to;
1795	}	2268	}
1796		2269
1797	#if EV_PERIODIC_ENABLE	2270	#if EV_PERIODIC_ENABLE
1798	if (periodiccnt)	2271	if (periodiccnt)
1799	{	2272	{
1800	ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2273	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1801	if (waittime > to) waittime = to;	2274	if (waittime > to) waittime = to;
1802	}	2275	}
1803	#endif	2276	#endif
1804		2277
		2278	/* don't let timeouts decrease the waittime below timeout_blocktime */
1805	if (expect_false (waittime < timeout_blocktime))	2279	if (expect_false (waittime < timeout_blocktime))
1806	waittime = timeout_blocktime;	2280	waittime = timeout_blocktime;
1807		2281
1808	sleeptime = waittime - backend_fudge;	2282	/* extra check because io_blocktime is commonly 0 */
1809
1810	if (expect_true (sleeptime > io_blocktime))	2283	if (expect_false (io_blocktime))
1811	sleeptime = io_blocktime;
1812
1813	if (sleeptime)
1814	{	2284	{
		2285	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2286
		2287	if (sleeptime > waittime - backend_fudge)
		2288	sleeptime = waittime - backend_fudge;
		2289
		2290	if (expect_true (sleeptime > 0.))
		2291	{
1815	ev_sleep (sleeptime);	2292	ev_sleep (sleeptime);
1816	waittime -= sleeptime;	2293	waittime -= sleeptime;
		2294	}
1817	}	2295	}
1818	}	2296	}
1819		2297
		2298	#if EV_MINIMAL < 2
1820	++loop_count;	2299	++loop_count;
		2300	#endif
		2301	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1821	backend_poll (EV_A_ waittime);	2302	backend_poll (EV_A_ waittime);
		2303	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1822		2304
1823	/* update ev_rt_now, do magic */	2305	/* update ev_rt_now, do magic */
1824	time_update (EV_A_ waittime + sleeptime);	2306	time_update (EV_A_ waittime + sleeptime);
1825	}	2307	}
1826		2308
…		…
1837		2319
1838	/* queue check watchers, to be executed first */	2320	/* queue check watchers, to be executed first */
1839	if (expect_false (checkcnt))	2321	if (expect_false (checkcnt))
1840	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2322	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1841		2323
1842	call_pending (EV_A);	2324	EV_INVOKE_PENDING;
1843	}	2325	}
1844	while (expect_true (	2326	while (expect_true (
1845	activecnt	2327	activecnt
1846	&& !loop_done	2328	&& !loop_done
1847	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2329	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1848	));	2330	));
1849		2331
1850	if (loop_done == EVUNLOOP_ONE)	2332	if (loop_done == EVUNLOOP_ONE)
1851	loop_done = EVUNLOOP_CANCEL;	2333	loop_done = EVUNLOOP_CANCEL;
		2334
		2335	#if EV_MINIMAL < 2
		2336	--loop_depth;
		2337	#endif
1852	}	2338	}
1853		2339
1854	void	2340	void
1855	ev_unloop (EV_P_ int how)	2341	ev_unloop (EV_P_ int how)
1856	{	2342	{
1857	loop_done = how;	2343	loop_done = how;
1858	}	2344	}
1859		2345
		2346	void
		2347	ev_ref (EV_P)
		2348	{
		2349	++activecnt;
		2350	}
		2351
		2352	void
		2353	ev_unref (EV_P)
		2354	{
		2355	--activecnt;
		2356	}
		2357
		2358	void
		2359	ev_now_update (EV_P)
		2360	{
		2361	time_update (EV_A_ 1e100);
		2362	}
		2363
		2364	void
		2365	ev_suspend (EV_P)
		2366	{
		2367	ev_now_update (EV_A);
		2368	}
		2369
		2370	void
		2371	ev_resume (EV_P)
		2372	{
		2373	ev_tstamp mn_prev = mn_now;
		2374
		2375	ev_now_update (EV_A);
		2376	timers_reschedule (EV_A_ mn_now - mn_prev);
		2377	#if EV_PERIODIC_ENABLE
		2378	/* TODO: really do this? */
		2379	periodics_reschedule (EV_A);
		2380	#endif
		2381	}
		2382
1860	/*****************************************************************************/	2383	/*****************************************************************************/
		2384	/* singly-linked list management, used when the expected list length is short */
1861		2385
1862	void inline_size	2386	inline_size void
1863	wlist_add (WL *head, WL elem)	2387	wlist_add (WL *head, WL elem)
1864	{	2388	{
1865	elem->next = *head;	2389	elem->next = *head;
1866	*head = elem;	2390	*head = elem;
1867	}	2391	}
1868		2392
1869	void inline_size	2393	inline_size void
1870	wlist_del (WL *head, WL elem)	2394	wlist_del (WL *head, WL elem)
1871	{	2395	{
1872	while (*head)	2396	while (*head)
1873	{	2397	{
1874	if (*head == elem)	2398	if (*head == elem)
…		…
1879		2403
1880	head = &(*head)->next;	2404	head = &(*head)->next;
1881	}	2405	}
1882	}	2406	}
1883		2407
1884	void inline_speed	2408	/* internal, faster, version of ev_clear_pending */
		2409	inline_speed void
1885	clear_pending (EV_P_ W w)	2410	clear_pending (EV_P_ W w)
1886	{	2411	{
1887	if (w->pending)	2412	if (w->pending)
1888	{	2413	{
1889	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2414	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1890	w->pending = 0;	2415	w->pending = 0;
1891	}	2416	}
1892	}	2417	}
1893		2418
1894	int	2419	int
…		…
1898	int pending = w_->pending;	2423	int pending = w_->pending;
1899		2424
1900	if (expect_true (pending))	2425	if (expect_true (pending))
1901	{	2426	{
1902	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2427	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2428	p->w = (W)&pending_w;
1903	w_->pending = 0;	2429	w_->pending = 0;
1904	p->w = 0;
1905	return p->events;	2430	return p->events;
1906	}	2431	}
1907	else	2432	else
1908	return 0;	2433	return 0;
1909	}	2434	}
1910		2435
1911	void inline_size	2436	inline_size void
1912	pri_adjust (EV_P_ W w)	2437	pri_adjust (EV_P_ W w)
1913	{	2438	{
1914	int pri = w->priority;	2439	int pri = ev_priority (w);
1915	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2440	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1916	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2441	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1917	w->priority = pri;	2442	ev_set_priority (w, pri);
1918	}	2443	}
1919		2444
1920	void inline_speed	2445	inline_speed void
1921	ev_start (EV_P_ W w, int active)	2446	ev_start (EV_P_ W w, int active)
1922	{	2447	{
1923	pri_adjust (EV_A_ w);	2448	pri_adjust (EV_A_ w);
1924	w->active = active;	2449	w->active = active;
1925	ev_ref (EV_A);	2450	ev_ref (EV_A);
1926	}	2451	}
1927		2452
1928	void inline_size	2453	inline_size void
1929	ev_stop (EV_P_ W w)	2454	ev_stop (EV_P_ W w)
1930	{	2455	{
1931	ev_unref (EV_A);	2456	ev_unref (EV_A);
1932	w->active = 0;	2457	w->active = 0;
1933	}	2458	}
…		…
1940	int fd = w->fd;	2465	int fd = w->fd;
1941		2466
1942	if (expect_false (ev_is_active (w)))	2467	if (expect_false (ev_is_active (w)))
1943	return;	2468	return;
1944		2469
1945	assert (("ev_io_start called with negative fd", fd >= 0));	2470	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2471	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2472
		2473	EV_FREQUENT_CHECK;
1946		2474
1947	ev_start (EV_A_ (W)w, 1);	2475	ev_start (EV_A_ (W)w, 1);
1948	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2476	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1949	wlist_add (&anfds[fd].head, (WL)w);	2477	wlist_add (&anfds[fd].head, (WL)w);
1950		2478
1951	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2479	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1952	w->events &= ~EV_IOFDSET;	2480	w->events &= ~EV__IOFDSET;
		2481
		2482	EV_FREQUENT_CHECK;
1953	}	2483	}
1954		2484
1955	void noinline	2485	void noinline
1956	ev_io_stop (EV_P_ ev_io *w)	2486	ev_io_stop (EV_P_ ev_io *w)
1957	{	2487	{
1958	clear_pending (EV_A_ (W)w);	2488	clear_pending (EV_A_ (W)w);
1959	if (expect_false (!ev_is_active (w)))	2489	if (expect_false (!ev_is_active (w)))
1960	return;	2490	return;
1961		2491
1962	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2492	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2493
		2494	EV_FREQUENT_CHECK;
1963		2495
1964	wlist_del (&anfds[w->fd].head, (WL)w);	2496	wlist_del (&anfds[w->fd].head, (WL)w);
1965	ev_stop (EV_A_ (W)w);	2497	ev_stop (EV_A_ (W)w);
1966		2498
1967	fd_change (EV_A_ w->fd, 1);	2499	fd_change (EV_A_ w->fd, 1);
		2500
		2501	EV_FREQUENT_CHECK;
1968	}	2502	}
1969		2503
1970	void noinline	2504	void noinline
1971	ev_timer_start (EV_P_ ev_timer *w)	2505	ev_timer_start (EV_P_ ev_timer *w)
1972	{	2506	{
1973	if (expect_false (ev_is_active (w)))	2507	if (expect_false (ev_is_active (w)))
1974	return;	2508	return;
1975		2509
1976	ev_at (w) += mn_now;	2510	ev_at (w) += mn_now;
1977		2511
1978	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2512	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1979		2513
		2514	EV_FREQUENT_CHECK;
		2515
		2516	++timercnt;
1980	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);	2517	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1981	array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2);	2518	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1982	timers [ev_active (w)] = (WT)w;	2519	ANHE_w (timers [ev_active (w)]) = (WT)w;
		2520	ANHE_at_cache (timers [ev_active (w)]);
1983	upheap (timers, ev_active (w));	2521	upheap (timers, ev_active (w));
1984		2522
		2523	EV_FREQUENT_CHECK;
		2524
1985	/*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/	2525	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1986	}	2526	}
1987		2527
1988	void noinline	2528	void noinline
1989	ev_timer_stop (EV_P_ ev_timer *w)	2529	ev_timer_stop (EV_P_ ev_timer *w)
1990	{	2530	{
1991	clear_pending (EV_A_ (W)w);	2531	clear_pending (EV_A_ (W)w);
1992	if (expect_false (!ev_is_active (w)))	2532	if (expect_false (!ev_is_active (w)))
1993	return;	2533	return;
1994		2534
		2535	EV_FREQUENT_CHECK;
		2536
1995	{	2537	{
1996	int active = ev_active (w);	2538	int active = ev_active (w);
1997		2539
1998	assert (("internal timer heap corruption", timers [active] == (WT)w));	2540	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1999		2541
		2542	--timercnt;
		2543
2000	if (expect_true (active < timercnt + HEAP0 - 1))	2544	if (expect_true (active < timercnt + HEAP0))
2001	{	2545	{
2002	timers [active] = timers [timercnt + HEAP0 - 1];	2546	timers [active] = timers [timercnt + HEAP0];
2003	adjustheap (timers, timercnt, active);	2547	adjustheap (timers, timercnt, active);
2004	}	2548	}
2005
2006	--timercnt;
2007	}	2549	}
		2550
		2551	EV_FREQUENT_CHECK;
2008		2552
2009	ev_at (w) -= mn_now;	2553	ev_at (w) -= mn_now;
2010		2554
2011	ev_stop (EV_A_ (W)w);	2555	ev_stop (EV_A_ (W)w);
2012	}	2556	}
2013		2557
2014	void noinline	2558	void noinline
2015	ev_timer_again (EV_P_ ev_timer *w)	2559	ev_timer_again (EV_P_ ev_timer *w)
2016	{	2560	{
		2561	EV_FREQUENT_CHECK;
		2562
2017	if (ev_is_active (w))	2563	if (ev_is_active (w))
2018	{	2564	{
2019	if (w->repeat)	2565	if (w->repeat)
2020	{	2566	{
2021	ev_at (w) = mn_now + w->repeat;	2567	ev_at (w) = mn_now + w->repeat;
		2568	ANHE_at_cache (timers [ev_active (w)]);
2022	adjustheap (timers, timercnt, ev_active (w));	2569	adjustheap (timers, timercnt, ev_active (w));
2023	}	2570	}
2024	else	2571	else
2025	ev_timer_stop (EV_A_ w);	2572	ev_timer_stop (EV_A_ w);
2026	}	2573	}
2027	else if (w->repeat)	2574	else if (w->repeat)
2028	{	2575	{
2029	ev_at (w) = w->repeat;	2576	ev_at (w) = w->repeat;
2030	ev_timer_start (EV_A_ w);	2577	ev_timer_start (EV_A_ w);
2031	}	2578	}
		2579
		2580	EV_FREQUENT_CHECK;
		2581	}
		2582
		2583	ev_tstamp
		2584	ev_timer_remaining (EV_P_ ev_timer *w)
		2585	{
		2586	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2032	}	2587	}
2033		2588
2034	#if EV_PERIODIC_ENABLE	2589	#if EV_PERIODIC_ENABLE
2035	void noinline	2590	void noinline
2036	ev_periodic_start (EV_P_ ev_periodic *w)	2591	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
2040		2595
2041	if (w->reschedule_cb)	2596	if (w->reschedule_cb)
2042	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2597	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2043	else if (w->interval)	2598	else if (w->interval)
2044	{	2599	{
2045	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2600	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2046	/* this formula differs from the one in periodic_reify because we do not always round up */	2601	/* this formula differs from the one in periodic_reify because we do not always round up */
2047	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2602	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2048	}	2603	}
2049	else	2604	else
2050	ev_at (w) = w->offset;	2605	ev_at (w) = w->offset;
2051		2606
		2607	EV_FREQUENT_CHECK;
		2608
		2609	++periodiccnt;
2052	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);	2610	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2053	array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2);	2611	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2054	periodics [ev_active (w)] = (WT)w;	2612	ANHE_w (periodics [ev_active (w)]) = (WT)w;
		2613	ANHE_at_cache (periodics [ev_active (w)]);
2055	upheap (periodics, ev_active (w));	2614	upheap (periodics, ev_active (w));
2056		2615
		2616	EV_FREQUENT_CHECK;
		2617
2057	/*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/	2618	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2058	}	2619	}
2059		2620
2060	void noinline	2621	void noinline
2061	ev_periodic_stop (EV_P_ ev_periodic *w)	2622	ev_periodic_stop (EV_P_ ev_periodic *w)
2062	{	2623	{
2063	clear_pending (EV_A_ (W)w);	2624	clear_pending (EV_A_ (W)w);
2064	if (expect_false (!ev_is_active (w)))	2625	if (expect_false (!ev_is_active (w)))
2065	return;	2626	return;
2066		2627
		2628	EV_FREQUENT_CHECK;
		2629
2067	{	2630	{
2068	int active = ev_active (w);	2631	int active = ev_active (w);
2069		2632
2070	assert (("internal periodic heap corruption", periodics [active] == (WT)w));	2633	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2071		2634
		2635	--periodiccnt;
		2636
2072	if (expect_true (active < periodiccnt + HEAP0 - 1))	2637	if (expect_true (active < periodiccnt + HEAP0))
2073	{	2638	{
2074	periodics [active] = periodics [periodiccnt + HEAP0 - 1];	2639	periodics [active] = periodics [periodiccnt + HEAP0];
2075	adjustheap (periodics, periodiccnt, active);	2640	adjustheap (periodics, periodiccnt, active);
2076	}	2641	}
2077
2078	--periodiccnt;
2079	}	2642	}
		2643
		2644	EV_FREQUENT_CHECK;
2080		2645
2081	ev_stop (EV_A_ (W)w);	2646	ev_stop (EV_A_ (W)w);
2082	}	2647	}
2083		2648
2084	void noinline	2649	void noinline
…		…
2095	#endif	2660	#endif
2096		2661
2097	void noinline	2662	void noinline
2098	ev_signal_start (EV_P_ ev_signal *w)	2663	ev_signal_start (EV_P_ ev_signal *w)
2099	{	2664	{
2100	#if EV_MULTIPLICITY
2101	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2102	#endif
2103	if (expect_false (ev_is_active (w)))	2665	if (expect_false (ev_is_active (w)))
2104	return;	2666	return;
2105		2667
2106	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2668	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2107		2669
2108	evpipe_init (EV_A);	2670	#if EV_MULTIPLICITY
		2671	assert (("libev: tried to attach to a signal from two different loops",
		2672	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2109		2673
		2674	signals [w->signum - 1].loop = EV_A;
		2675	#endif
		2676
		2677	EV_FREQUENT_CHECK;
		2678
		2679	#if EV_USE_SIGNALFD
		2680	if (sigfd == -2)
2110	{	2681	{
2111	#ifndef _WIN32	2682	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2112	sigset_t full, prev;	2683	if (sigfd < 0 && errno == EINVAL)
2113	sigfillset (&full);	2684	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2114	sigprocmask (SIG_SETMASK, &full, &prev);
2115	#endif
2116		2685
2117	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2686	if (sigfd >= 0)
		2687	{
		2688	fd_intern (sigfd); /* doing it twice will not hurt */
2118		2689
2119	#ifndef _WIN32	2690	sigemptyset (&sigfd_set);
2120	sigprocmask (SIG_SETMASK, &prev, 0);	2691
2121	#endif	2692	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2693	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2694	ev_io_start (EV_A_ &sigfd_w);
		2695	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2696	}
2122	}	2697	}
		2698
		2699	if (sigfd >= 0)
		2700	{
		2701	/* TODO: check .head */
		2702	sigaddset (&sigfd_set, w->signum);
		2703	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2704
		2705	signalfd (sigfd, &sigfd_set, 0);
		2706	}
		2707	#endif
2123		2708
2124	ev_start (EV_A_ (W)w, 1);	2709	ev_start (EV_A_ (W)w, 1);
2125	wlist_add (&signals [w->signum - 1].head, (WL)w);	2710	wlist_add (&signals [w->signum - 1].head, (WL)w);
2126		2711
2127	if (!((WL)w)->next)	2712	if (!((WL)w)->next)
		2713	# if EV_USE_SIGNALFD
		2714	if (sigfd < 0) /*TODO*/
		2715	# endif
2128	{	2716	{
2129	#if _WIN32	2717	# if _WIN32
2130	signal (w->signum, ev_sighandler);	2718	signal (w->signum, ev_sighandler);
2131	#else	2719	# else
2132	struct sigaction sa;	2720	struct sigaction sa;
		2721
		2722	evpipe_init (EV_A);
		2723
2133	sa.sa_handler = ev_sighandler;	2724	sa.sa_handler = ev_sighandler;
2134	sigfillset (&sa.sa_mask);	2725	sigfillset (&sa.sa_mask);
2135	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2726	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2136	sigaction (w->signum, &sa, 0);	2727	sigaction (w->signum, &sa, 0);
		2728
		2729	sigemptyset (&sa.sa_mask);
		2730	sigaddset (&sa.sa_mask, w->signum);
		2731	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2137	#endif	2732	#endif
2138	}	2733	}
		2734
		2735	EV_FREQUENT_CHECK;
2139	}	2736	}
2140		2737
2141	void noinline	2738	void noinline
2142	ev_signal_stop (EV_P_ ev_signal *w)	2739	ev_signal_stop (EV_P_ ev_signal *w)
2143	{	2740	{
2144	clear_pending (EV_A_ (W)w);	2741	clear_pending (EV_A_ (W)w);
2145	if (expect_false (!ev_is_active (w)))	2742	if (expect_false (!ev_is_active (w)))
2146	return;	2743	return;
2147		2744
		2745	EV_FREQUENT_CHECK;
		2746
2148	wlist_del (&signals [w->signum - 1].head, (WL)w);	2747	wlist_del (&signals [w->signum - 1].head, (WL)w);
2149	ev_stop (EV_A_ (W)w);	2748	ev_stop (EV_A_ (W)w);
2150		2749
2151	if (!signals [w->signum - 1].head)	2750	if (!signals [w->signum - 1].head)
		2751	{
		2752	#if EV_MULTIPLICITY
		2753	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2754	#endif
		2755	#if EV_USE_SIGNALFD
		2756	if (sigfd >= 0)
		2757	{
		2758	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2759	sigdelset (&sigfd_set, w->signum);
		2760	signalfd (sigfd, &sigfd_set, 0);
		2761	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2762	/*TODO: maybe unblock signal? */
		2763	}
		2764	else
		2765	#endif
2152	signal (w->signum, SIG_DFL);	2766	signal (w->signum, SIG_DFL);
		2767	}
		2768
		2769	EV_FREQUENT_CHECK;
2153	}	2770	}
2154		2771
2155	void	2772	void
2156	ev_child_start (EV_P_ ev_child *w)	2773	ev_child_start (EV_P_ ev_child *w)
2157	{	2774	{
2158	#if EV_MULTIPLICITY	2775	#if EV_MULTIPLICITY
2159	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2776	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2160	#endif	2777	#endif
2161	if (expect_false (ev_is_active (w)))	2778	if (expect_false (ev_is_active (w)))
2162	return;	2779	return;
2163		2780
		2781	EV_FREQUENT_CHECK;
		2782
2164	ev_start (EV_A_ (W)w, 1);	2783	ev_start (EV_A_ (W)w, 1);
2165	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2784	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2785
		2786	EV_FREQUENT_CHECK;
2166	}	2787	}
2167		2788
2168	void	2789	void
2169	ev_child_stop (EV_P_ ev_child *w)	2790	ev_child_stop (EV_P_ ev_child *w)
2170	{	2791	{
2171	clear_pending (EV_A_ (W)w);	2792	clear_pending (EV_A_ (W)w);
2172	if (expect_false (!ev_is_active (w)))	2793	if (expect_false (!ev_is_active (w)))
2173	return;	2794	return;
2174		2795
		2796	EV_FREQUENT_CHECK;
		2797
2175	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2798	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2176	ev_stop (EV_A_ (W)w);	2799	ev_stop (EV_A_ (W)w);
		2800
		2801	EV_FREQUENT_CHECK;
2177	}	2802	}
2178		2803
2179	#if EV_STAT_ENABLE	2804	#if EV_STAT_ENABLE
2180		2805
2181	# ifdef _WIN32	2806	# ifdef _WIN32
2182	# undef lstat	2807	# undef lstat
2183	# define lstat(a,b) _stati64 (a,b)	2808	# define lstat(a,b) _stati64 (a,b)
2184	# endif	2809	# endif
2185		2810
2186	#define DEF_STAT_INTERVAL 5.0074891	2811	#define DEF_STAT_INTERVAL 5.0074891
		2812	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2187	#define MIN_STAT_INTERVAL 0.1074891	2813	#define MIN_STAT_INTERVAL 0.1074891
2188		2814
2189	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2815	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2190		2816
2191	#if EV_USE_INOTIFY	2817	#if EV_USE_INOTIFY
2192	# define EV_INOTIFY_BUFSIZE 8192	2818	# define EV_INOTIFY_BUFSIZE 8192
…		…
2196	{	2822	{
2197	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);	2823	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);
2198		2824
2199	if (w->wd < 0)	2825	if (w->wd < 0)
2200	{	2826	{
		2827	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2201	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2828	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2202		2829
2203	/* monitor some parent directory for speedup hints */	2830	/* monitor some parent directory for speedup hints */
2204	/* note that exceeding the hardcoded limit is not a correctness issue, */	2831	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2205	/* but an efficiency issue only */	2832	/* but an efficiency issue only */
2206	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2833	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2207	{	2834	{
2208	char path [4096];	2835	char path [4096];
2209	strcpy (path, w->path);	2836	strcpy (path, w->path);
…		…
2213	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2840	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2214	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2841	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2215		2842
2216	char *pend = strrchr (path, '/');	2843	char *pend = strrchr (path, '/');
2217		2844
2218	if (!pend)	2845	if (!pend || pend == path)
2219	break; /* whoops, no '/', complain to your admin */	2846	break;
2220		2847
2221	*pend = 0;	2848	*pend = 0;
2222	w->wd = inotify_add_watch (fs_fd, path, mask);	2849	w->wd = inotify_add_watch (fs_fd, path, mask);
2223	}	2850	}
2224	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2851	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2225	}	2852	}
2226	}	2853	}
2227	else
2228	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2229		2854
2230	if (w->wd >= 0)	2855	if (w->wd >= 0)
		2856	{
2231	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2857	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2858
		2859	/* now local changes will be tracked by inotify, but remote changes won't */
		2860	/* unless the filesystem it known to be local, we therefore still poll */
		2861	/* also do poll on <2.6.25, but with normal frequency */
		2862	struct statfs sfs;
		2863
		2864	if (fs_2625 && !statfs (w->path, &sfs))
		2865	if (sfs.f_type == 0x1373 /* devfs */
		2866	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2867	|| sfs.f_type == 0x3153464a /* jfs */
		2868	|| sfs.f_type == 0x52654973 /* reiser3 */
		2869	|| sfs.f_type == 0x01021994 /* tempfs */
		2870	|| sfs.f_type == 0x58465342 /* xfs */)
		2871	return;
		2872
		2873	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2874	ev_timer_again (EV_A_ &w->timer);
		2875	}
2232	}	2876	}
2233		2877
2234	static void noinline	2878	static void noinline
2235	infy_del (EV_P_ ev_stat *w)	2879	infy_del (EV_P_ ev_stat *w)
2236	{	2880	{
…		…
2250		2894
2251	static void noinline	2895	static void noinline
2252	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2896	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2253	{	2897	{
2254	if (slot < 0)	2898	if (slot < 0)
2255	/* overflow, need to check for all hahs slots */	2899	/* overflow, need to check for all hash slots */
2256	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2900	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2257	infy_wd (EV_A_ slot, wd, ev);	2901	infy_wd (EV_A_ slot, wd, ev);
2258	else	2902	else
2259	{	2903	{
2260	WL w_;	2904	WL w_;
…		…
2266		2910
2267	if (w->wd == wd || wd == -1)	2911	if (w->wd == wd || wd == -1)
2268	{	2912	{
2269	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2913	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2270	{	2914	{
		2915	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2271	w->wd = -1;	2916	w->wd = -1;
2272	infy_add (EV_A_ w); /* re-add, no matter what */	2917	infy_add (EV_A_ w); /* re-add, no matter what */
2273	}	2918	}
2274		2919
2275	stat_timer_cb (EV_A_ &w->timer, 0);	2920	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2288		2933
2289	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2934	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2290	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2935	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2291	}	2936	}
2292		2937
2293	void inline_size	2938	inline_size void
		2939	check_2625 (EV_P)
		2940	{
		2941	/* kernels < 2.6.25 are borked
		2942	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2943	*/
		2944	struct utsname buf;
		2945	int major, minor, micro;
		2946
		2947	if (uname (&buf))
		2948	return;
		2949
		2950	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2951	return;
		2952
		2953	if (major < 2
		2954	|| (major == 2 && minor < 6)
		2955	|| (major == 2 && minor == 6 && micro < 25))
		2956	return;
		2957
		2958	fs_2625 = 1;
		2959	}
		2960
		2961	inline_size void
2294	infy_init (EV_P)	2962	infy_init (EV_P)
2295	{	2963	{
2296	if (fs_fd != -2)	2964	if (fs_fd != -2)
2297	return;	2965	return;
		2966
		2967	fs_fd = -1;
		2968
		2969	check_2625 (EV_A);
2298		2970
2299	fs_fd = inotify_init ();	2971	fs_fd = inotify_init ();
2300		2972
2301	if (fs_fd >= 0)	2973	if (fs_fd >= 0)
2302	{	2974	{
…		…
2304	ev_set_priority (&fs_w, EV_MAXPRI);	2976	ev_set_priority (&fs_w, EV_MAXPRI);
2305	ev_io_start (EV_A_ &fs_w);	2977	ev_io_start (EV_A_ &fs_w);
2306	}	2978	}
2307	}	2979	}
2308		2980
2309	void inline_size	2981	inline_size void
2310	infy_fork (EV_P)	2982	infy_fork (EV_P)
2311	{	2983	{
2312	int slot;	2984	int slot;
2313		2985
2314	if (fs_fd < 0)	2986	if (fs_fd < 0)
…		…
2330	w->wd = -1;	3002	w->wd = -1;
2331		3003
2332	if (fs_fd >= 0)	3004	if (fs_fd >= 0)
2333	infy_add (EV_A_ w); /* re-add, no matter what */	3005	infy_add (EV_A_ w); /* re-add, no matter what */
2334	else	3006	else
2335	ev_timer_start (EV_A_ &w->timer);	3007	ev_timer_again (EV_A_ &w->timer);
2336	}	3008	}
2337
2338	}	3009	}
2339	}	3010	}
2340		3011
		3012	#endif
		3013
		3014	#ifdef _WIN32
		3015	# define EV_LSTAT(p,b) _stati64 (p, b)
		3016	#else
		3017	# define EV_LSTAT(p,b) lstat (p, b)
2341	#endif	3018	#endif
2342		3019
2343	void	3020	void
2344	ev_stat_stat (EV_P_ ev_stat *w)	3021	ev_stat_stat (EV_P_ ev_stat *w)
2345	{	3022	{
…		…
2372	|| w->prev.st_atime != w->attr.st_atime	3049	|| w->prev.st_atime != w->attr.st_atime
2373	|| w->prev.st_mtime != w->attr.st_mtime	3050	|| w->prev.st_mtime != w->attr.st_mtime
2374	|| w->prev.st_ctime != w->attr.st_ctime	3051	|| w->prev.st_ctime != w->attr.st_ctime
2375	) {	3052	) {
2376	#if EV_USE_INOTIFY	3053	#if EV_USE_INOTIFY
		3054	if (fs_fd >= 0)
		3055	{
2377	infy_del (EV_A_ w);	3056	infy_del (EV_A_ w);
2378	infy_add (EV_A_ w);	3057	infy_add (EV_A_ w);
2379	ev_stat_stat (EV_A_ w); /* avoid race... */	3058	ev_stat_stat (EV_A_ w); /* avoid race... */
		3059	}
2380	#endif	3060	#endif
2381		3061
2382	ev_feed_event (EV_A_ w, EV_STAT);	3062	ev_feed_event (EV_A_ w, EV_STAT);
2383	}	3063	}
2384	}	3064	}
…		…
2387	ev_stat_start (EV_P_ ev_stat *w)	3067	ev_stat_start (EV_P_ ev_stat *w)
2388	{	3068	{
2389	if (expect_false (ev_is_active (w)))	3069	if (expect_false (ev_is_active (w)))
2390	return;	3070	return;
2391		3071
2392	/* since we use memcmp, we need to clear any padding data etc. */
2393	memset (&w->prev, 0, sizeof (ev_statdata));
2394	memset (&w->attr, 0, sizeof (ev_statdata));
2395
2396	ev_stat_stat (EV_A_ w);	3072	ev_stat_stat (EV_A_ w);
2397		3073
		3074	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2398	if (w->interval < MIN_STAT_INTERVAL)	3075	w->interval = MIN_STAT_INTERVAL;
2399	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2400		3076
2401	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3077	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2402	ev_set_priority (&w->timer, ev_priority (w));	3078	ev_set_priority (&w->timer, ev_priority (w));
2403		3079
2404	#if EV_USE_INOTIFY	3080	#if EV_USE_INOTIFY
2405	infy_init (EV_A);	3081	infy_init (EV_A);
2406		3082
2407	if (fs_fd >= 0)	3083	if (fs_fd >= 0)
2408	infy_add (EV_A_ w);	3084	infy_add (EV_A_ w);
2409	else	3085	else
2410	#endif	3086	#endif
2411	ev_timer_start (EV_A_ &w->timer);	3087	ev_timer_again (EV_A_ &w->timer);
2412		3088
2413	ev_start (EV_A_ (W)w, 1);	3089	ev_start (EV_A_ (W)w, 1);
		3090
		3091	EV_FREQUENT_CHECK;
2414	}	3092	}
2415		3093
2416	void	3094	void
2417	ev_stat_stop (EV_P_ ev_stat *w)	3095	ev_stat_stop (EV_P_ ev_stat *w)
2418	{	3096	{
2419	clear_pending (EV_A_ (W)w);	3097	clear_pending (EV_A_ (W)w);
2420	if (expect_false (!ev_is_active (w)))	3098	if (expect_false (!ev_is_active (w)))
2421	return;	3099	return;
2422		3100
		3101	EV_FREQUENT_CHECK;
		3102
2423	#if EV_USE_INOTIFY	3103	#if EV_USE_INOTIFY
2424	infy_del (EV_A_ w);	3104	infy_del (EV_A_ w);
2425	#endif	3105	#endif
2426	ev_timer_stop (EV_A_ &w->timer);	3106	ev_timer_stop (EV_A_ &w->timer);
2427		3107
2428	ev_stop (EV_A_ (W)w);	3108	ev_stop (EV_A_ (W)w);
		3109
		3110	EV_FREQUENT_CHECK;
2429	}	3111	}
2430	#endif	3112	#endif
2431		3113
2432	#if EV_IDLE_ENABLE	3114	#if EV_IDLE_ENABLE
2433	void	3115	void
…		…
2435	{	3117	{
2436	if (expect_false (ev_is_active (w)))	3118	if (expect_false (ev_is_active (w)))
2437	return;	3119	return;
2438		3120
2439	pri_adjust (EV_A_ (W)w);	3121	pri_adjust (EV_A_ (W)w);
		3122
		3123	EV_FREQUENT_CHECK;
2440		3124
2441	{	3125	{
2442	int active = ++idlecnt [ABSPRI (w)];	3126	int active = ++idlecnt [ABSPRI (w)];
2443		3127
2444	++idleall;	3128	++idleall;
2445	ev_start (EV_A_ (W)w, active);	3129	ev_start (EV_A_ (W)w, active);
2446		3130
2447	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	3131	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2448	idles [ABSPRI (w)][active - 1] = w;	3132	idles [ABSPRI (w)][active - 1] = w;
2449	}	3133	}
		3134
		3135	EV_FREQUENT_CHECK;
2450	}	3136	}
2451		3137
2452	void	3138	void
2453	ev_idle_stop (EV_P_ ev_idle *w)	3139	ev_idle_stop (EV_P_ ev_idle *w)
2454	{	3140	{
2455	clear_pending (EV_A_ (W)w);	3141	clear_pending (EV_A_ (W)w);
2456	if (expect_false (!ev_is_active (w)))	3142	if (expect_false (!ev_is_active (w)))
2457	return;	3143	return;
2458		3144
		3145	EV_FREQUENT_CHECK;
		3146
2459	{	3147	{
2460	int active = ev_active (w);	3148	int active = ev_active (w);
2461		3149
2462	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3150	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2463	ev_active (idles [ABSPRI (w)][active - 1]) = active;	3151	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2464		3152
2465	ev_stop (EV_A_ (W)w);	3153	ev_stop (EV_A_ (W)w);
2466	--idleall;	3154	--idleall;
2467	}	3155	}
		3156
		3157	EV_FREQUENT_CHECK;
2468	}	3158	}
2469	#endif	3159	#endif
2470		3160
2471	void	3161	void
2472	ev_prepare_start (EV_P_ ev_prepare *w)	3162	ev_prepare_start (EV_P_ ev_prepare *w)
2473	{	3163	{
2474	if (expect_false (ev_is_active (w)))	3164	if (expect_false (ev_is_active (w)))
2475	return;	3165	return;
		3166
		3167	EV_FREQUENT_CHECK;
2476		3168
2477	ev_start (EV_A_ (W)w, ++preparecnt);	3169	ev_start (EV_A_ (W)w, ++preparecnt);
2478	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3170	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2479	prepares [preparecnt - 1] = w;	3171	prepares [preparecnt - 1] = w;
		3172
		3173	EV_FREQUENT_CHECK;
2480	}	3174	}
2481		3175
2482	void	3176	void
2483	ev_prepare_stop (EV_P_ ev_prepare *w)	3177	ev_prepare_stop (EV_P_ ev_prepare *w)
2484	{	3178	{
2485	clear_pending (EV_A_ (W)w);	3179	clear_pending (EV_A_ (W)w);
2486	if (expect_false (!ev_is_active (w)))	3180	if (expect_false (!ev_is_active (w)))
2487	return;	3181	return;
2488		3182
		3183	EV_FREQUENT_CHECK;
		3184
2489	{	3185	{
2490	int active = ev_active (w);	3186	int active = ev_active (w);
2491		3187
2492	prepares [active - 1] = prepares [--preparecnt];	3188	prepares [active - 1] = prepares [--preparecnt];
2493	ev_active (prepares [active - 1]) = active;	3189	ev_active (prepares [active - 1]) = active;
2494	}	3190	}
2495		3191
2496	ev_stop (EV_A_ (W)w);	3192	ev_stop (EV_A_ (W)w);
		3193
		3194	EV_FREQUENT_CHECK;
2497	}	3195	}
2498		3196
2499	void	3197	void
2500	ev_check_start (EV_P_ ev_check *w)	3198	ev_check_start (EV_P_ ev_check *w)
2501	{	3199	{
2502	if (expect_false (ev_is_active (w)))	3200	if (expect_false (ev_is_active (w)))
2503	return;	3201	return;
		3202
		3203	EV_FREQUENT_CHECK;
2504		3204
2505	ev_start (EV_A_ (W)w, ++checkcnt);	3205	ev_start (EV_A_ (W)w, ++checkcnt);
2506	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3206	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2507	checks [checkcnt - 1] = w;	3207	checks [checkcnt - 1] = w;
		3208
		3209	EV_FREQUENT_CHECK;
2508	}	3210	}
2509		3211
2510	void	3212	void
2511	ev_check_stop (EV_P_ ev_check *w)	3213	ev_check_stop (EV_P_ ev_check *w)
2512	{	3214	{
2513	clear_pending (EV_A_ (W)w);	3215	clear_pending (EV_A_ (W)w);
2514	if (expect_false (!ev_is_active (w)))	3216	if (expect_false (!ev_is_active (w)))
2515	return;	3217	return;
2516		3218
		3219	EV_FREQUENT_CHECK;
		3220
2517	{	3221	{
2518	int active = ev_active (w);	3222	int active = ev_active (w);
2519		3223
2520	checks [active - 1] = checks [--checkcnt];	3224	checks [active - 1] = checks [--checkcnt];
2521	ev_active (checks [active - 1]) = active;	3225	ev_active (checks [active - 1]) = active;
2522	}	3226	}
2523		3227
2524	ev_stop (EV_A_ (W)w);	3228	ev_stop (EV_A_ (W)w);
		3229
		3230	EV_FREQUENT_CHECK;
2525	}	3231	}
2526		3232
2527	#if EV_EMBED_ENABLE	3233	#if EV_EMBED_ENABLE
2528	void noinline	3234	void noinline
2529	ev_embed_sweep (EV_P_ ev_embed *w)	3235	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2546	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3252	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2547	{	3253	{
2548	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3254	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2549		3255
2550	{	3256	{
2551	struct ev_loop *loop = w->other;	3257	EV_P = w->other;
2552		3258
2553	while (fdchangecnt)	3259	while (fdchangecnt)
2554	{	3260	{
2555	fd_reify (EV_A);	3261	fd_reify (EV_A);
2556	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3262	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2557	}	3263	}
2558	}	3264	}
2559	}	3265	}
2560		3266
		3267	static void
		3268	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3269	{
		3270	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3271
		3272	ev_embed_stop (EV_A_ w);
		3273
		3274	{
		3275	EV_P = w->other;
		3276
		3277	ev_loop_fork (EV_A);
		3278	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3279	}
		3280
		3281	ev_embed_start (EV_A_ w);
		3282	}
		3283
2561	#if 0	3284	#if 0
2562	static void	3285	static void
2563	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3286	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2564	{	3287	{
2565	ev_idle_stop (EV_A_ idle);	3288	ev_idle_stop (EV_A_ idle);
…		…
2571	{	3294	{
2572	if (expect_false (ev_is_active (w)))	3295	if (expect_false (ev_is_active (w)))
2573	return;	3296	return;
2574		3297
2575	{	3298	{
2576	struct ev_loop *loop = w->other;	3299	EV_P = w->other;
2577	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3300	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2578	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3301	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2579	}	3302	}
		3303
		3304	EV_FREQUENT_CHECK;
2580		3305
2581	ev_set_priority (&w->io, ev_priority (w));	3306	ev_set_priority (&w->io, ev_priority (w));
2582	ev_io_start (EV_A_ &w->io);	3307	ev_io_start (EV_A_ &w->io);
2583		3308
2584	ev_prepare_init (&w->prepare, embed_prepare_cb);	3309	ev_prepare_init (&w->prepare, embed_prepare_cb);
2585	ev_set_priority (&w->prepare, EV_MINPRI);	3310	ev_set_priority (&w->prepare, EV_MINPRI);
2586	ev_prepare_start (EV_A_ &w->prepare);	3311	ev_prepare_start (EV_A_ &w->prepare);
2587		3312
		3313	ev_fork_init (&w->fork, embed_fork_cb);
		3314	ev_fork_start (EV_A_ &w->fork);
		3315
2588	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3316	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2589		3317
2590	ev_start (EV_A_ (W)w, 1);	3318	ev_start (EV_A_ (W)w, 1);
		3319
		3320	EV_FREQUENT_CHECK;
2591	}	3321	}
2592		3322
2593	void	3323	void
2594	ev_embed_stop (EV_P_ ev_embed *w)	3324	ev_embed_stop (EV_P_ ev_embed *w)
2595	{	3325	{
2596	clear_pending (EV_A_ (W)w);	3326	clear_pending (EV_A_ (W)w);
2597	if (expect_false (!ev_is_active (w)))	3327	if (expect_false (!ev_is_active (w)))
2598	return;	3328	return;
2599		3329
		3330	EV_FREQUENT_CHECK;
		3331
2600	ev_io_stop (EV_A_ &w->io);	3332	ev_io_stop (EV_A_ &w->io);
2601	ev_prepare_stop (EV_A_ &w->prepare);	3333	ev_prepare_stop (EV_A_ &w->prepare);
		3334	ev_fork_stop (EV_A_ &w->fork);
2602		3335
2603	ev_stop (EV_A_ (W)w);	3336	EV_FREQUENT_CHECK;
2604	}	3337	}
2605	#endif	3338	#endif
2606		3339
2607	#if EV_FORK_ENABLE	3340	#if EV_FORK_ENABLE
2608	void	3341	void
2609	ev_fork_start (EV_P_ ev_fork *w)	3342	ev_fork_start (EV_P_ ev_fork *w)
2610	{	3343	{
2611	if (expect_false (ev_is_active (w)))	3344	if (expect_false (ev_is_active (w)))
2612	return;	3345	return;
		3346
		3347	EV_FREQUENT_CHECK;
2613		3348
2614	ev_start (EV_A_ (W)w, ++forkcnt);	3349	ev_start (EV_A_ (W)w, ++forkcnt);
2615	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3350	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2616	forks [forkcnt - 1] = w;	3351	forks [forkcnt - 1] = w;
		3352
		3353	EV_FREQUENT_CHECK;
2617	}	3354	}
2618		3355
2619	void	3356	void
2620	ev_fork_stop (EV_P_ ev_fork *w)	3357	ev_fork_stop (EV_P_ ev_fork *w)
2621	{	3358	{
2622	clear_pending (EV_A_ (W)w);	3359	clear_pending (EV_A_ (W)w);
2623	if (expect_false (!ev_is_active (w)))	3360	if (expect_false (!ev_is_active (w)))
2624	return;	3361	return;
2625		3362
		3363	EV_FREQUENT_CHECK;
		3364
2626	{	3365	{
2627	int active = ev_active (w);	3366	int active = ev_active (w);
2628		3367
2629	forks [active - 1] = forks [--forkcnt];	3368	forks [active - 1] = forks [--forkcnt];
2630	ev_active (forks [active - 1]) = active;	3369	ev_active (forks [active - 1]) = active;
2631	}	3370	}
2632		3371
2633	ev_stop (EV_A_ (W)w);	3372	ev_stop (EV_A_ (W)w);
		3373
		3374	EV_FREQUENT_CHECK;
2634	}	3375	}
2635	#endif	3376	#endif
2636		3377
2637	#if EV_ASYNC_ENABLE	3378	#if EV_ASYNC_ENABLE
2638	void	3379	void
…		…
2640	{	3381	{
2641	if (expect_false (ev_is_active (w)))	3382	if (expect_false (ev_is_active (w)))
2642	return;	3383	return;
2643		3384
2644	evpipe_init (EV_A);	3385	evpipe_init (EV_A);
		3386
		3387	EV_FREQUENT_CHECK;
2645		3388
2646	ev_start (EV_A_ (W)w, ++asynccnt);	3389	ev_start (EV_A_ (W)w, ++asynccnt);
2647	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3390	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2648	asyncs [asynccnt - 1] = w;	3391	asyncs [asynccnt - 1] = w;
		3392
		3393	EV_FREQUENT_CHECK;
2649	}	3394	}
2650		3395
2651	void	3396	void
2652	ev_async_stop (EV_P_ ev_async *w)	3397	ev_async_stop (EV_P_ ev_async *w)
2653	{	3398	{
2654	clear_pending (EV_A_ (W)w);	3399	clear_pending (EV_A_ (W)w);
2655	if (expect_false (!ev_is_active (w)))	3400	if (expect_false (!ev_is_active (w)))
2656	return;	3401	return;
2657		3402
		3403	EV_FREQUENT_CHECK;
		3404
2658	{	3405	{
2659	int active = ev_active (w);	3406	int active = ev_active (w);
2660		3407
2661	asyncs [active - 1] = asyncs [--asynccnt];	3408	asyncs [active - 1] = asyncs [--asynccnt];
2662	ev_active (asyncs [active - 1]) = active;	3409	ev_active (asyncs [active - 1]) = active;
2663	}	3410	}
2664		3411
2665	ev_stop (EV_A_ (W)w);	3412	ev_stop (EV_A_ (W)w);
		3413
		3414	EV_FREQUENT_CHECK;
2666	}	3415	}
2667		3416
2668	void	3417	void
2669	ev_async_send (EV_P_ ev_async *w)	3418	ev_async_send (EV_P_ ev_async *w)
2670	{	3419	{
…		…
2687	once_cb (EV_P_ struct ev_once *once, int revents)	3436	once_cb (EV_P_ struct ev_once *once, int revents)
2688	{	3437	{
2689	void (*cb)(int revents, void *arg) = once->cb;	3438	void (*cb)(int revents, void *arg) = once->cb;
2690	void *arg = once->arg;	3439	void *arg = once->arg;
2691		3440
2692	ev_io_stop (EV_A_ &once->io);	3441	ev_io_stop (EV_A_ &once->io);
2693	ev_timer_stop (EV_A_ &once->to);	3442	ev_timer_stop (EV_A_ &once->to);
2694	ev_free (once);	3443	ev_free (once);
2695		3444
2696	cb (revents, arg);	3445	cb (revents, arg);
2697	}	3446	}
2698		3447
2699	static void	3448	static void
2700	once_cb_io (EV_P_ ev_io *w, int revents)	3449	once_cb_io (EV_P_ ev_io *w, int revents)
2701	{	3450	{
2702	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3451	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3452
		3453	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2703	}	3454	}
2704		3455
2705	static void	3456	static void
2706	once_cb_to (EV_P_ ev_timer *w, int revents)	3457	once_cb_to (EV_P_ ev_timer *w, int revents)
2707	{	3458	{
2708	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3459	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3460
		3461	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2709	}	3462	}
2710		3463
2711	void	3464	void
2712	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3465	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2713	{	3466	{
…		…
2735	ev_timer_set (&once->to, timeout, 0.);	3488	ev_timer_set (&once->to, timeout, 0.);
2736	ev_timer_start (EV_A_ &once->to);	3489	ev_timer_start (EV_A_ &once->to);
2737	}	3490	}
2738	}	3491	}
2739		3492
		3493	/*****************************************************************************/
		3494
		3495	#if EV_WALK_ENABLE
		3496	void
		3497	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3498	{
		3499	int i, j;
		3500	ev_watcher_list *wl, *wn;
		3501
		3502	if (types & (EV_IO | EV_EMBED))
		3503	for (i = 0; i < anfdmax; ++i)
		3504	for (wl = anfds [i].head; wl; )
		3505	{
		3506	wn = wl->next;
		3507
		3508	#if EV_EMBED_ENABLE
		3509	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3510	{
		3511	if (types & EV_EMBED)
		3512	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3513	}
		3514	else
		3515	#endif
		3516	#if EV_USE_INOTIFY
		3517	if (ev_cb ((ev_io *)wl) == infy_cb)
		3518	;
		3519	else
		3520	#endif
		3521	if ((ev_io *)wl != &pipe_w)
		3522	if (types & EV_IO)
		3523	cb (EV_A_ EV_IO, wl);
		3524
		3525	wl = wn;
		3526	}
		3527
		3528	if (types & (EV_TIMER | EV_STAT))
		3529	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3530	#if EV_STAT_ENABLE
		3531	/*TODO: timer is not always active*/
		3532	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3533	{
		3534	if (types & EV_STAT)
		3535	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3536	}
		3537	else
		3538	#endif
		3539	if (types & EV_TIMER)
		3540	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3541
		3542	#if EV_PERIODIC_ENABLE
		3543	if (types & EV_PERIODIC)
		3544	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3545	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3546	#endif
		3547
		3548	#if EV_IDLE_ENABLE
		3549	if (types & EV_IDLE)
		3550	for (j = NUMPRI; i--; )
		3551	for (i = idlecnt [j]; i--; )
		3552	cb (EV_A_ EV_IDLE, idles [j][i]);
		3553	#endif
		3554
		3555	#if EV_FORK_ENABLE
		3556	if (types & EV_FORK)
		3557	for (i = forkcnt; i--; )
		3558	if (ev_cb (forks [i]) != embed_fork_cb)
		3559	cb (EV_A_ EV_FORK, forks [i]);
		3560	#endif
		3561
		3562	#if EV_ASYNC_ENABLE
		3563	if (types & EV_ASYNC)
		3564	for (i = asynccnt; i--; )
		3565	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3566	#endif
		3567
		3568	if (types & EV_PREPARE)
		3569	for (i = preparecnt; i--; )
		3570	#if EV_EMBED_ENABLE
		3571	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3572	#endif
		3573	cb (EV_A_ EV_PREPARE, prepares [i]);
		3574
		3575	if (types & EV_CHECK)
		3576	for (i = checkcnt; i--; )
		3577	cb (EV_A_ EV_CHECK, checks [i]);
		3578
		3579	if (types & EV_SIGNAL)
		3580	for (i = 0; i < EV_NSIG - 1; ++i)
		3581	for (wl = signals [i].head; wl; )
		3582	{
		3583	wn = wl->next;
		3584	cb (EV_A_ EV_SIGNAL, wl);
		3585	wl = wn;
		3586	}
		3587
		3588	if (types & EV_CHILD)
		3589	for (i = EV_PID_HASHSIZE; i--; )
		3590	for (wl = childs [i]; wl; )
		3591	{
		3592	wn = wl->next;
		3593	cb (EV_A_ EV_CHILD, wl);
		3594	wl = wn;
		3595	}
		3596	/* EV_STAT 0x00001000 /* stat data changed */
		3597	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3598	}
		3599	#endif
		3600
2740	#if EV_MULTIPLICITY	3601	#if EV_MULTIPLICITY
2741	#include "ev_wrap.h"	3602	#include "ev_wrap.h"
2742	#endif	3603	#endif
2743		3604
2744	#ifdef __cplusplus	3605	#ifdef __cplusplus

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