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Comparing libev/ev.c (file contents):
Revision 1.239 by root, Thu May 8 20:52:13 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];
		1008	ANHE *E = heap + N + HEAP0;
781		1009
782	for (;;)	1010	for (;;)
783	{	1011	{
784	int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
785
786	if (p == k || heap [p]->at <= w->at)
787	break;
788
789	heap [k] = heap [p];
790	ev_active (heap [k]) = k;
791	k = p;
792	}
793
794	heap [k] = w;
795	ev_active (heap [k]) = k;
796	}
797
798	/* away from the root */
799	void inline_speed
800	downheap (WT *heap, int N, int k)
801	{
802	WT w = heap [k];
803	WT *E = heap + N + HEAP0;
804
805	for (;;)
806	{
807	ev_tstamp minat;	1012	ev_tstamp minat;
808	WT *minpos;	1013	ANHE *minpos;
809	WT *pos = heap + DHEAP * (k - HEAP0) + HEAP0;	1014	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
810		1015
811	// find minimum child	1016	/* find minimum child */
812	if (expect_true (pos + DHEAP - 1 < E))	1017	if (expect_true (pos + DHEAP - 1 < E))
813	{	1018	{
814	/* fast path */
815	(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));
		1023	}
		1024	else if (pos < E)
		1025	{
		1026	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1027	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1028	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1029	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
819	}	1030	}
820	else	1031	else
821	{
822	/* slow path */
823	if (pos >= E)
824	break;
825	(minpos = pos + 0), (minat = (*minpos)->at);
826	if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
827	if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
828	if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
829	}
830
831	if (w->at <= minat)
832	break;	1032	break;
833		1033
834	ev_active (*minpos) = k;	1034	if (ANHE_at (he) <= minat)
		1035	break;
		1036
835	heap [k] = *minpos;	1037	heap [k] = *minpos;
		1038	ev_active (ANHE_w (*minpos)) = k;
836		1039
837	k = minpos - heap;	1040	k = minpos - heap;
838	}	1041	}
839		1042
840	heap [k] = w;	1043	heap [k] = he;
841	ev_active (heap [k]) = k;	1044	ev_active (ANHE_w (he)) = k;
842	}	1045	}
843		1046
844	#else // 4HEAP	1047	#else /* 4HEAP */
845		1048
846	#define HEAP0 1	1049	#define HEAP0 1
		1050	#define HPARENT(k) ((k) >> 1)
		1051	#define UPHEAP_DONE(p,k) (!(p))
847		1052
848	/* towards the root */	1053	/* away from the root */
849	void inline_speed	1054	inline_speed void
850	upheap (WT *heap, int k)	1055	downheap (ANHE *heap, int N, int k)
851	{	1056	{
852	WT w = heap [k];	1057	ANHE he = heap [k];
853		1058
854	for (;;)	1059	for (;;)
855	{	1060	{
856	int p = k >> 1;	1061	int c = k << 1;
857		1062
858	/* maybe we could use a dummy element at heap [0]? */	1063	if (c > N + HEAP0 - 1)
859	if (!p || heap [p]->at <= w->at)
860	break;	1064	break;
861		1065
862	heap [k] = heap [p];	1066	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
863	ev_active (heap [k]) = k;	1067	? 1 : 0;
864	k = p;
865	}
866		1068
867	heap [k] = w;	1069	if (ANHE_at (he) <= ANHE_at (heap [c]))
868	ev_active (heap [k]) = k;
869	}
870
871	/* away from the root */
872	void inline_speed
873	downheap (WT *heap, int N, int k)
874	{
875	WT w = heap [k];
876
877	for (;;)
878	{
879	int c = k << 1;
880
881	if (c > N)
882	break;	1070	break;
883		1071
884	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
885	? 1 : 0;
886
887	if (w->at <= heap [c]->at)
888	break;
889
890	heap [k] = heap [c];	1072	heap [k] = heap [c];
891	((W)heap [k])->active = k;	1073	ev_active (ANHE_w (heap [k])) = k;
892		1074
893	k = c;	1075	k = c;
894	}	1076	}
895		1077
896	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];
897	ev_active (heap [k]) = k;	1097	ev_active (ANHE_w (heap [k])) = k;
898	}	1098	k = p;
899	#endif	1099	}
900		1100
901	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
902	adjustheap (WT *heap, int N, int k)	1107	adjustheap (ANHE *heap, int N, int k)
903	{	1108	{
		1109	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
904	upheap (heap, k);	1110	upheap (heap, k);
		1111	else
905	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);
906	}	1125	}
907		1126
908	/*****************************************************************************/	1127	/*****************************************************************************/
909		1128
		1129	/* associate signal watchers to a signal signal */
910	typedef struct	1130	typedef struct
911	{	1131	{
		1132	#if EV_MULTIPLICITY
		1133	EV_P;
		1134	#endif
912	WL head;	1135	WL head;
913	EV_ATOMIC_T gotsig;	1136	EV_ATOMIC_T gotsig;
914	} ANSIG;	1137	} ANSIG;
915		1138
916	static ANSIG *signals;	1139	static ANSIG signals [EV_NSIG - 1];
917	static int signalmax;
918
919	static EV_ATOMIC_T gotsig;	1140	static EV_ATOMIC_T gotsig;
920		1141
921	void inline_size
922	signals_init (ANSIG *base, int count)
923	{
924	while (count--)
925	{
926	base->head = 0;
927	base->gotsig = 0;
928
929	++base;
930	}
931	}
932
933	/*****************************************************************************/	1142	/*****************************************************************************/
934		1143
935	void inline_speed	1144	/* used to prepare libev internal fd's */
		1145	/* this is not fork-safe */
		1146	inline_speed void
936	fd_intern (int fd)	1147	fd_intern (int fd)
937	{	1148	{
938	#ifdef _WIN32	1149	#ifdef _WIN32
939	int arg = 1;	1150	unsigned long arg = 1;
940	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1151	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
941	#else	1152	#else
942	fcntl (fd, F_SETFD, FD_CLOEXEC);	1153	fcntl (fd, F_SETFD, FD_CLOEXEC);
943	fcntl (fd, F_SETFL, O_NONBLOCK);	1154	fcntl (fd, F_SETFL, O_NONBLOCK);
944	#endif	1155	#endif
945	}	1156	}
946		1157
947	static void noinline	1158	static void noinline
948	evpipe_init (EV_P)	1159	evpipe_init (EV_P)
949	{	1160	{
950	if (!ev_is_active (&pipeev))	1161	if (!ev_is_active (&pipe_w))
951	{	1162	{
952	#if EV_USE_EVENTFD	1163	#if EV_USE_EVENTFD
		1164	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1165	if (evfd < 0 && errno == EINVAL)
953	if ((evfd = eventfd (0, 0)) >= 0)	1166	evfd = eventfd (0, 0);
		1167
		1168	if (evfd >= 0)
954	{	1169	{
955	evpipe [0] = -1;	1170	evpipe [0] = -1;
956	fd_intern (evfd);	1171	fd_intern (evfd); /* doing it twice doesn't hurt */
957	ev_io_set (&pipeev, evfd, EV_READ);	1172	ev_io_set (&pipe_w, evfd, EV_READ);
958	}	1173	}
959	else	1174	else
960	#endif	1175	#endif
961	{	1176	{
962	while (pipe (evpipe))	1177	while (pipe (evpipe))
963	syserr ("(libev) error creating signal/async pipe");	1178	ev_syserr ("(libev) error creating signal/async pipe");
964		1179
965	fd_intern (evpipe [0]);	1180	fd_intern (evpipe [0]);
966	fd_intern (evpipe [1]);	1181	fd_intern (evpipe [1]);
967	ev_io_set (&pipeev, evpipe [0], EV_READ);	1182	ev_io_set (&pipe_w, evpipe [0], EV_READ);
968	}	1183	}
969		1184
970	ev_io_start (EV_A_ &pipeev);	1185	ev_io_start (EV_A_ &pipe_w);
971	ev_unref (EV_A); /* watcher should not keep loop alive */	1186	ev_unref (EV_A); /* watcher should not keep loop alive */
972	}	1187	}
973	}	1188	}
974		1189
975	void inline_size	1190	inline_size void
976	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1191	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
977	{	1192	{
978	if (!*flag)	1193	if (!*flag)
979	{	1194	{
980	int old_errno = errno; /* save errno because write might clobber it */	1195	int old_errno = errno; /* save errno because write might clobber it */
…		…
993		1208
994	errno = old_errno;	1209	errno = old_errno;
995	}	1210	}
996	}	1211	}
997		1212
		1213	/* called whenever the libev signal pipe */
		1214	/* got some events (signal, async) */
998	static void	1215	static void
999	pipecb (EV_P_ ev_io *iow, int revents)	1216	pipecb (EV_P_ ev_io *iow, int revents)
1000	{	1217	{
1001	#if EV_USE_EVENTFD	1218	#if EV_USE_EVENTFD
1002	if (evfd >= 0)	1219	if (evfd >= 0)
…		…
1014	if (gotsig && ev_is_default_loop (EV_A))	1231	if (gotsig && ev_is_default_loop (EV_A))
1015	{	1232	{
1016	int signum;	1233	int signum;
1017	gotsig = 0;	1234	gotsig = 0;
1018		1235
1019	for (signum = signalmax; signum--; )	1236	for (signum = EV_NSIG - 1; signum--; )
1020	if (signals [signum].gotsig)	1237	if (signals [signum].gotsig)
1021	ev_feed_signal_event (EV_A_ signum + 1);	1238	ev_feed_signal_event (EV_A_ signum + 1);
1022	}	1239	}
1023		1240
1024	#if EV_ASYNC_ENABLE	1241	#if EV_ASYNC_ENABLE
…		…
1041		1258
1042	static void	1259	static void
1043	ev_sighandler (int signum)	1260	ev_sighandler (int signum)
1044	{	1261	{
1045	#if EV_MULTIPLICITY	1262	#if EV_MULTIPLICITY
1046	struct ev_loop *loop = &default_loop_struct;	1263	EV_P = signals [signum - 1].loop;
1047	#endif	1264	#endif
1048		1265
1049	#if _WIN32	1266	#if _WIN32
1050	signal (signum, ev_sighandler);	1267	signal (signum, ev_sighandler);
1051	#endif	1268	#endif
…		…
1058	ev_feed_signal_event (EV_P_ int signum)	1275	ev_feed_signal_event (EV_P_ int signum)
1059	{	1276	{
1060	WL w;	1277	WL w;
1061		1278
1062	#if EV_MULTIPLICITY	1279	#if EV_MULTIPLICITY
1063	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));
1064	#endif	1281	#endif
		1282
		1283	if (signum <= 0 || signum > EV_NSIG)
		1284	return;
1065		1285
1066	--signum;	1286	--signum;
1067
1068	if (signum < 0 || signum >= signalmax)
1069	return;
1070		1287
1071	signals [signum].gotsig = 0;	1288	signals [signum].gotsig = 0;
1072		1289
1073	for (w = signals [signum].head; w; w = w->next)	1290	for (w = signals [signum].head; w; w = w->next)
1074	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1291	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1075	}	1292	}
1076		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
1077	/*****************************************************************************/	1314	/*****************************************************************************/
1078		1315
1079	static WL childs [EV_PID_HASHSIZE];	1316	static WL childs [EV_PID_HASHSIZE];
1080		1317
1081	#ifndef _WIN32	1318	#ifndef _WIN32
…		…
1084		1321
1085	#ifndef WIFCONTINUED	1322	#ifndef WIFCONTINUED
1086	# define WIFCONTINUED(status) 0	1323	# define WIFCONTINUED(status) 0
1087	#endif	1324	#endif
1088		1325
1089	void inline_speed	1326	/* handle a single child status event */
		1327	inline_speed void
1090	child_reap (EV_P_ int chain, int pid, int status)	1328	child_reap (EV_P_ int chain, int pid, int status)
1091	{	1329	{
1092	ev_child *w;	1330	ev_child *w;
1093	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1331	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1094		1332
…		…
1107		1345
1108	#ifndef WCONTINUED	1346	#ifndef WCONTINUED
1109	# define WCONTINUED 0	1347	# define WCONTINUED 0
1110	#endif	1348	#endif
1111		1349
		1350	/* called on sigchld etc., calls waitpid */
1112	static void	1351	static void
1113	childcb (EV_P_ ev_signal *sw, int revents)	1352	childcb (EV_P_ ev_signal *sw, int revents)
1114	{	1353	{
1115	int pid, status;	1354	int pid, status;
1116		1355
…		…
1197	/* kqueue is borked on everything but netbsd apparently */	1436	/* kqueue is borked on everything but netbsd apparently */
1198	/* 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 */
1199	flags &= ~EVBACKEND_KQUEUE;	1438	flags &= ~EVBACKEND_KQUEUE;
1200	#endif	1439	#endif
1201	#ifdef __APPLE__	1440	#ifdef __APPLE__
1202	// flags &= ~EVBACKEND_KQUEUE; for documentation	1441	/* only select works correctly on that "unix-certified" platform */
1203	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 */
1204	#endif	1444	#endif
1205		1445
1206	return flags;	1446	return flags;
1207	}	1447	}
1208		1448
…		…
1222	ev_backend (EV_P)	1462	ev_backend (EV_P)
1223	{	1463	{
1224	return backend;	1464	return backend;
1225	}	1465	}
1226		1466
		1467	#if EV_MINIMAL < 2
1227	unsigned int	1468	unsigned int
1228	ev_loop_count (EV_P)	1469	ev_loop_count (EV_P)
1229	{	1470	{
1230	return loop_count;	1471	return loop_count;
1231	}	1472	}
1232		1473
		1474	unsigned int
		1475	ev_loop_depth (EV_P)
		1476	{
		1477	return loop_depth;
		1478	}
		1479
1233	void	1480	void
1234	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1481	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1235	{	1482	{
1236	io_blocktime = interval;	1483	io_blocktime = interval;
1237	}	1484	}
…		…
1240	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1487	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1241	{	1488	{
1242	timeout_blocktime = interval;	1489	timeout_blocktime = interval;
1243	}	1490	}
1244		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 */
1245	static void noinline	1517	static void noinline
1246	loop_init (EV_P_ unsigned int flags)	1518	loop_init (EV_P_ unsigned int flags)
1247	{	1519	{
1248	if (!backend)	1520	if (!backend)
1249	{	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
1250	#if EV_USE_MONOTONIC	1532	#if EV_USE_MONOTONIC
		1533	if (!have_monotonic)
1251	{	1534	{
1252	struct timespec ts;	1535	struct timespec ts;
		1536
1253	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1537	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1254	have_monotonic = 1;	1538	have_monotonic = 1;
1255	}	1539	}
1256	#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"));
1257		1552
1258	ev_rt_now = ev_time ();	1553	ev_rt_now = ev_time ();
1259	mn_now = get_clock ();	1554	mn_now = get_clock ();
1260	now_floor = mn_now;	1555	now_floor = mn_now;
1261	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
1262		1560
1263	io_blocktime = 0.;	1561	io_blocktime = 0.;
1264	timeout_blocktime = 0.;	1562	timeout_blocktime = 0.;
1265	backend = 0;	1563	backend = 0;
1266	backend_fd = -1;	1564	backend_fd = -1;
1267	gotasync = 0;	1565	gotasync = 0;
1268	#if EV_USE_INOTIFY	1566	#if EV_USE_INOTIFY
1269	fs_fd = -2;	1567	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1270	#endif	1568	#endif
1271		1569	#if EV_USE_SIGNALFD
1272	/* pid check not overridable via env */	1570	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1273	#ifndef _WIN32
1274	if (flags & EVFLAG_FORKCHECK)
1275	curpid = getpid ();
1276	#endif	1571	#endif
1277
1278	if (!(flags & EVFLAG_NOENV)
1279	&& !enable_secure ()
1280	&& getenv ("LIBEV_FLAGS"))
1281	flags = atoi (getenv ("LIBEV_FLAGS"));
1282		1572
1283	if (!(flags & 0x0000ffffU))	1573	if (!(flags & 0x0000ffffU))
1284	flags |= ev_recommended_backends ();	1574	flags |= ev_recommended_backends ();
1285		1575
1286	#if EV_USE_PORT	1576	#if EV_USE_PORT
…		…
1297	#endif	1587	#endif
1298	#if EV_USE_SELECT	1588	#if EV_USE_SELECT
1299	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1589	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1300	#endif	1590	#endif
1301		1591
		1592	ev_prepare_init (&pending_w, pendingcb);
		1593
1302	ev_init (&pipeev, pipecb);	1594	ev_init (&pipe_w, pipecb);
1303	ev_set_priority (&pipeev, EV_MAXPRI);	1595	ev_set_priority (&pipe_w, EV_MAXPRI);
1304	}	1596	}
1305	}	1597	}
1306		1598
		1599	/* free up a loop structure */
1307	static void noinline	1600	static void noinline
1308	loop_destroy (EV_P)	1601	loop_destroy (EV_P)
1309	{	1602	{
1310	int i;	1603	int i;
1311		1604
1312	if (ev_is_active (&pipeev))	1605	if (ev_is_active (&pipe_w))
1313	{	1606	{
1314	ev_ref (EV_A); /* signal watcher */	1607	/*ev_ref (EV_A);*/
1315	ev_io_stop (EV_A_ &pipeev);	1608	/*ev_io_stop (EV_A_ &pipe_w);*/
1316		1609
1317	#if EV_USE_EVENTFD	1610	#if EV_USE_EVENTFD
1318	if (evfd >= 0)	1611	if (evfd >= 0)
1319	close (evfd);	1612	close (evfd);
1320	#endif	1613	#endif
…		…
1324	close (evpipe [0]);	1617	close (evpipe [0]);
1325	close (evpipe [1]);	1618	close (evpipe [1]);
1326	}	1619	}
1327	}	1620	}
1328		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
1329	#if EV_USE_INOTIFY	1632	#if EV_USE_INOTIFY
1330	if (fs_fd >= 0)	1633	if (fs_fd >= 0)
1331	close (fs_fd);	1634	close (fs_fd);
1332	#endif	1635	#endif
1333		1636
…		…
1356	#if EV_IDLE_ENABLE	1659	#if EV_IDLE_ENABLE
1357	array_free (idle, [i]);	1660	array_free (idle, [i]);
1358	#endif	1661	#endif
1359	}	1662	}
1360		1663
1361	ev_free (anfds); anfdmax = 0;	1664	ev_free (anfds); anfds = 0; anfdmax = 0;
1362		1665
1363	/* 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);
1364	array_free (fdchange, EMPTY);	1668	array_free (fdchange, EMPTY);
1365	array_free (timer, EMPTY);	1669	array_free (timer, EMPTY);
1366	#if EV_PERIODIC_ENABLE	1670	#if EV_PERIODIC_ENABLE
1367	array_free (periodic, EMPTY);	1671	array_free (periodic, EMPTY);
1368	#endif	1672	#endif
…		…
1377		1681
1378	backend = 0;	1682	backend = 0;
1379	}	1683	}
1380		1684
1381	#if EV_USE_INOTIFY	1685	#if EV_USE_INOTIFY
1382	void inline_size infy_fork (EV_P);	1686	inline_size void infy_fork (EV_P);
1383	#endif	1687	#endif
1384		1688
1385	void inline_size	1689	inline_size void
1386	loop_fork (EV_P)	1690	loop_fork (EV_P)
1387	{	1691	{
1388	#if EV_USE_PORT	1692	#if EV_USE_PORT
1389	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1693	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1390	#endif	1694	#endif
…		…
1396	#endif	1700	#endif
1397	#if EV_USE_INOTIFY	1701	#if EV_USE_INOTIFY
1398	infy_fork (EV_A);	1702	infy_fork (EV_A);
1399	#endif	1703	#endif
1400		1704
1401	if (ev_is_active (&pipeev))	1705	if (ev_is_active (&pipe_w))
1402	{	1706	{
1403	/* this "locks" the handlers against writing to the pipe */	1707	/* this "locks" the handlers against writing to the pipe */
1404	/* while we modify the fd vars */	1708	/* while we modify the fd vars */
1405	gotsig = 1;	1709	gotsig = 1;
1406	#if EV_ASYNC_ENABLE	1710	#if EV_ASYNC_ENABLE
1407	gotasync = 1;	1711	gotasync = 1;
1408	#endif	1712	#endif
1409		1713
1410	ev_ref (EV_A);	1714	ev_ref (EV_A);
1411	ev_io_stop (EV_A_ &pipeev);	1715	ev_io_stop (EV_A_ &pipe_w);
1412		1716
1413	#if EV_USE_EVENTFD	1717	#if EV_USE_EVENTFD
1414	if (evfd >= 0)	1718	if (evfd >= 0)
1415	close (evfd);	1719	close (evfd);
1416	#endif	1720	#endif
…		…
1421	close (evpipe [1]);	1725	close (evpipe [1]);
1422	}	1726	}
1423		1727
1424	evpipe_init (EV_A);	1728	evpipe_init (EV_A);
1425	/* now iterate over everything, in case we missed something */	1729	/* now iterate over everything, in case we missed something */
1426	pipecb (EV_A_ &pipeev, EV_READ);	1730	pipecb (EV_A_ &pipe_w, EV_READ);
1427	}	1731	}
1428		1732
1429	postfork = 0;	1733	postfork = 0;
1430	}	1734	}
1431		1735
1432	#if EV_MULTIPLICITY	1736	#if EV_MULTIPLICITY
		1737
1433	struct ev_loop *	1738	struct ev_loop *
1434	ev_loop_new (unsigned int flags)	1739	ev_loop_new (unsigned int flags)
1435	{	1740	{
1436	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));
1437		1742
1438	memset (loop, 0, sizeof (struct ev_loop));	1743	memset (EV_A, 0, sizeof (struct ev_loop));
1439
1440	loop_init (EV_A_ flags);	1744	loop_init (EV_A_ flags);
1441		1745
1442	if (ev_backend (EV_A))	1746	if (ev_backend (EV_A))
1443	return loop;	1747	return EV_A;
1444		1748
1445	return 0;	1749	return 0;
1446	}	1750	}
1447		1751
1448	void	1752	void
…		…
1454		1758
1455	void	1759	void
1456	ev_loop_fork (EV_P)	1760	ev_loop_fork (EV_P)
1457	{	1761	{
1458	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
1459	}	1864	}
1460	#endif	1865	#endif
1461		1866
1462	#if EV_MULTIPLICITY	1867	#if EV_MULTIPLICITY
1463	struct ev_loop *	1868	struct ev_loop *
…		…
1468	#endif	1873	#endif
1469	{	1874	{
1470	if (!ev_default_loop_ptr)	1875	if (!ev_default_loop_ptr)
1471	{	1876	{
1472	#if EV_MULTIPLICITY	1877	#if EV_MULTIPLICITY
1473	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1878	EV_P = ev_default_loop_ptr = &default_loop_struct;
1474	#else	1879	#else
1475	ev_default_loop_ptr = 1;	1880	ev_default_loop_ptr = 1;
1476	#endif	1881	#endif
1477		1882
1478	loop_init (EV_A_ flags);	1883	loop_init (EV_A_ flags);
…		…
1495		1900
1496	void	1901	void
1497	ev_default_destroy (void)	1902	ev_default_destroy (void)
1498	{	1903	{
1499	#if EV_MULTIPLICITY	1904	#if EV_MULTIPLICITY
1500	struct ev_loop *loop = ev_default_loop_ptr;	1905	EV_P = ev_default_loop_ptr;
1501	#endif	1906	#endif
		1907
		1908	ev_default_loop_ptr = 0;
1502		1909
1503	#ifndef _WIN32	1910	#ifndef _WIN32
1504	ev_ref (EV_A); /* child watcher */	1911	ev_ref (EV_A); /* child watcher */
1505	ev_signal_stop (EV_A_ &childev);	1912	ev_signal_stop (EV_A_ &childev);
1506	#endif	1913	#endif
…		…
1510		1917
1511	void	1918	void
1512	ev_default_fork (void)	1919	ev_default_fork (void)
1513	{	1920	{
1514	#if EV_MULTIPLICITY	1921	#if EV_MULTIPLICITY
1515	struct ev_loop *loop = ev_default_loop_ptr;	1922	EV_P = ev_default_loop_ptr;
1516	#endif	1923	#endif
1517		1924
1518	if (backend)
1519	postfork = 1; /* must be in line with ev_loop_fork */	1925	postfork = 1; /* must be in line with ev_loop_fork */
1520	}	1926	}
1521		1927
1522	/*****************************************************************************/	1928	/*****************************************************************************/
1523		1929
1524	void	1930	void
1525	ev_invoke (EV_P_ void *w, int revents)	1931	ev_invoke (EV_P_ void *w, int revents)
1526	{	1932	{
1527	EV_CB_INVOKE ((W)w, revents);	1933	EV_CB_INVOKE ((W)w, revents);
1528	}	1934	}
1529		1935
1530	void inline_speed	1936	unsigned int
1531	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)
1532	{	1950	{
1533	int pri;	1951	int pri;
1534		1952
1535	for (pri = NUMPRI; pri--; )	1953	for (pri = NUMPRI; pri--; )
1536	while (pendingcnt [pri])	1954	while (pendingcnt [pri])
1537	{	1955	{
1538	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1956	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1539		1957
1540	if (expect_true (p->w))
1541	{
1542	/*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 */
1543		1960
1544	p->w->pending = 0;	1961	p->w->pending = 0;
1545	EV_CB_INVOKE (p->w, p->events);	1962	EV_CB_INVOKE (p->w, p->events);
1546	}	1963	EV_FREQUENT_CHECK;
1547	}	1964	}
1548	}	1965	}
1549		1966
1550	#if EV_IDLE_ENABLE	1967	#if EV_IDLE_ENABLE
1551	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
1552	idle_reify (EV_P)	1971	idle_reify (EV_P)
1553	{	1972	{
1554	if (expect_false (idleall))	1973	if (expect_false (idleall))
1555	{	1974	{
1556	int pri;	1975	int pri;
…		…
1568	}	1987	}
1569	}	1988	}
1570	}	1989	}
1571	#endif	1990	#endif
1572		1991
1573	void inline_size	1992	/* make timers pending */
		1993	inline_size void
1574	timers_reify (EV_P)	1994	timers_reify (EV_P)
1575	{	1995	{
		1996	EV_FREQUENT_CHECK;
		1997
1576	while (timercnt && ev_at (timers [HEAP0]) <= mn_now)	1998	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1577	{	1999	{
1578	ev_timer *w = (ev_timer *)timers [HEAP0];	2000	do
1579
1580	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1581
1582	/* first reschedule or stop timer */
1583	if (w->repeat)
1584	{	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
1585	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.));
1586		2014
1587	ev_at (w) += w->repeat;	2015	ANHE_at_cache (timers [HEAP0]);
1588	if (ev_at (w) < mn_now)
1589	ev_at (w) = mn_now;
1590
1591	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);
1592	}	2023	}
1593	else	2024	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1594	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1595		2025
1596	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	2026	feed_reverse_done (EV_A_ EV_TIMEOUT);
1597	}	2027	}
1598	}	2028	}
1599		2029
1600	#if EV_PERIODIC_ENABLE	2030	#if EV_PERIODIC_ENABLE
1601	void inline_size	2031	/* make periodics pending */
		2032	inline_size void
1602	periodics_reify (EV_P)	2033	periodics_reify (EV_P)
1603	{	2034	{
		2035	EV_FREQUENT_CHECK;
		2036
1604	while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now)	2037	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1605	{	2038	{
1606	ev_periodic *w = (ev_periodic *)periodics [HEAP0];	2039	int feed_count = 0;
1607		2040
1608	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	2041	do
1609
1610	/* first reschedule or stop timer */
1611	if (w->reschedule_cb)
1612	{	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	{
1613	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);	2050	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2051
1614	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]);
1615	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);
1616	}	2081	}
1617	else if (w->interval)	2082	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1618	{
1619	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1620	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1621	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1622	downheap (periodics, periodiccnt, HEAP0);
1623	}
1624	else
1625	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1626		2083
1627	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	2084	feed_reverse_done (EV_A_ EV_PERIODIC);
1628	}	2085	}
1629	}	2086	}
1630		2087
		2088	/* simply recalculate all periodics */
		2089	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1631	static void noinline	2090	static void noinline
1632	periodics_reschedule (EV_P)	2091	periodics_reschedule (EV_P)
1633	{	2092	{
1634	int i;	2093	int i;
1635		2094
1636	/* adjust periodics after time jump */	2095	/* adjust periodics after time jump */
1637	for (i = 1; i <= periodiccnt; ++i)	2096	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1638	{	2097	{
1639	ev_periodic *w = (ev_periodic *)periodics [i];	2098	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1640		2099
1641	if (w->reschedule_cb)	2100	if (w->reschedule_cb)
1642	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2101	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1643	else if (w->interval)	2102	else if (w->interval)
1644	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)
1645	}	2119	{
1646		2120	ANHE *he = timers + i + HEAP0;
1647	/* now rebuild the heap */	2121	ANHE_w (*he)->at += adjust;
1648	for (i = periodiccnt >> 1; --i; )	2122	ANHE_at_cache (*he);
1649	downheap (periodics, periodiccnt, i + HEAP0);	2123	}
1650	}	2124	}
1651	#endif
1652		2125
1653	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
1654	time_update (EV_P_ ev_tstamp max_block)	2129	time_update (EV_P_ ev_tstamp max_block)
1655	{	2130	{
1656	int i;
1657
1658	#if EV_USE_MONOTONIC	2131	#if EV_USE_MONOTONIC
1659	if (expect_true (have_monotonic))	2132	if (expect_true (have_monotonic))
1660	{	2133	{
		2134	int i;
1661	ev_tstamp odiff = rtmn_diff;	2135	ev_tstamp odiff = rtmn_diff;
1662		2136
1663	mn_now = get_clock ();	2137	mn_now = get_clock ();
1664		2138
1665	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2139	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1691	ev_rt_now = ev_time ();	2165	ev_rt_now = ev_time ();
1692	mn_now = get_clock ();	2166	mn_now = get_clock ();
1693	now_floor = mn_now;	2167	now_floor = mn_now;
1694	}	2168	}
1695		2169
		2170	/* no timer adjustment, as the monotonic clock doesn't jump */
		2171	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1696	# if EV_PERIODIC_ENABLE	2172	# if EV_PERIODIC_ENABLE
1697	periodics_reschedule (EV_A);	2173	periodics_reschedule (EV_A);
1698	# endif	2174	# endif
1699	/* no timer adjustment, as the monotonic clock doesn't jump */
1700	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1701	}	2175	}
1702	else	2176	else
1703	#endif	2177	#endif
1704	{	2178	{
1705	ev_rt_now = ev_time ();	2179	ev_rt_now = ev_time ();
1706		2180
1707	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))
1708	{	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);
1709	#if EV_PERIODIC_ENABLE	2185	#if EV_PERIODIC_ENABLE
1710	periodics_reschedule (EV_A);	2186	periodics_reschedule (EV_A);
1711	#endif	2187	#endif
1712	/* adjust timers. this is easy, as the offset is the same for all of them */
1713	for (i = 1; i <= timercnt; ++i)
1714	ev_at (timers [i]) += ev_rt_now - mn_now;
1715	}	2188	}
1716		2189
1717	mn_now = ev_rt_now;	2190	mn_now = ev_rt_now;
1718	}	2191	}
1719	}	2192	}
1720		2193
1721	void	2194	void
1722	ev_ref (EV_P)
1723	{
1724	++activecnt;
1725	}
1726
1727	void
1728	ev_unref (EV_P)
1729	{
1730	--activecnt;
1731	}
1732
1733	static int loop_done;
1734
1735	void
1736	ev_loop (EV_P_ int flags)	2195	ev_loop (EV_P_ int flags)
1737	{	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
1738	loop_done = EVUNLOOP_CANCEL;	2203	loop_done = EVUNLOOP_CANCEL;
1739		2204
1740	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 */
1741		2206
1742	do	2207	do
1743	{	2208	{
		2209	#if EV_VERIFY >= 2
		2210	ev_loop_verify (EV_A);
		2211	#endif
		2212
1744	#ifndef _WIN32	2213	#ifndef _WIN32
1745	if (expect_false (curpid)) /* penalise the forking check even more */	2214	if (expect_false (curpid)) /* penalise the forking check even more */
1746	if (expect_false (getpid () != curpid))	2215	if (expect_false (getpid () != curpid))
1747	{	2216	{
1748	curpid = getpid ();	2217	curpid = getpid ();
…		…
1754	/* we might have forked, so queue fork handlers */	2223	/* we might have forked, so queue fork handlers */
1755	if (expect_false (postfork))	2224	if (expect_false (postfork))
1756	if (forkcnt)	2225	if (forkcnt)
1757	{	2226	{
1758	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2227	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1759	call_pending (EV_A);	2228	EV_INVOKE_PENDING;
1760	}	2229	}
1761	#endif	2230	#endif
1762		2231
1763	/* queue prepare watchers (and execute them) */	2232	/* queue prepare watchers (and execute them) */
1764	if (expect_false (preparecnt))	2233	if (expect_false (preparecnt))
1765	{	2234	{
1766	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2235	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1767	call_pending (EV_A);	2236	EV_INVOKE_PENDING;
1768	}	2237	}
1769		2238
1770	if (expect_false (!activecnt))	2239	if (expect_false (loop_done))
1771	break;	2240	break;
1772		2241
1773	/* we might have forked, so reify kernel state if necessary */	2242	/* we might have forked, so reify kernel state if necessary */
1774	if (expect_false (postfork))	2243	if (expect_false (postfork))
1775	loop_fork (EV_A);	2244	loop_fork (EV_A);
…		…
1782	ev_tstamp waittime = 0.;	2251	ev_tstamp waittime = 0.;
1783	ev_tstamp sleeptime = 0.;	2252	ev_tstamp sleeptime = 0.;
1784		2253
1785	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2254	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1786	{	2255	{
		2256	/* remember old timestamp for io_blocktime calculation */
		2257	ev_tstamp prev_mn_now = mn_now;
		2258
1787	/* update time to cancel out callback processing overhead */	2259	/* update time to cancel out callback processing overhead */
1788	time_update (EV_A_ 1e100);	2260	time_update (EV_A_ 1e100);
1789		2261
1790	waittime = MAX_BLOCKTIME;	2262	waittime = MAX_BLOCKTIME;
1791		2263
1792	if (timercnt)	2264	if (timercnt)
1793	{	2265	{
1794	ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge;	2266	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1795	if (waittime > to) waittime = to;	2267	if (waittime > to) waittime = to;
1796	}	2268	}
1797		2269
1798	#if EV_PERIODIC_ENABLE	2270	#if EV_PERIODIC_ENABLE
1799	if (periodiccnt)	2271	if (periodiccnt)
1800	{	2272	{
1801	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;
1802	if (waittime > to) waittime = to;	2274	if (waittime > to) waittime = to;
1803	}	2275	}
1804	#endif	2276	#endif
1805		2277
		2278	/* don't let timeouts decrease the waittime below timeout_blocktime */
1806	if (expect_false (waittime < timeout_blocktime))	2279	if (expect_false (waittime < timeout_blocktime))
1807	waittime = timeout_blocktime;	2280	waittime = timeout_blocktime;
1808		2281
1809	sleeptime = waittime - backend_fudge;	2282	/* extra check because io_blocktime is commonly 0 */
1810
1811	if (expect_true (sleeptime > io_blocktime))	2283	if (expect_false (io_blocktime))
1812	sleeptime = io_blocktime;
1813
1814	if (sleeptime)
1815	{	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	{
1816	ev_sleep (sleeptime);	2292	ev_sleep (sleeptime);
1817	waittime -= sleeptime;	2293	waittime -= sleeptime;
		2294	}
1818	}	2295	}
1819	}	2296	}
1820		2297
		2298	#if EV_MINIMAL < 2
1821	++loop_count;	2299	++loop_count;
		2300	#endif
		2301	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1822	backend_poll (EV_A_ waittime);	2302	backend_poll (EV_A_ waittime);
		2303	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1823		2304
1824	/* update ev_rt_now, do magic */	2305	/* update ev_rt_now, do magic */
1825	time_update (EV_A_ waittime + sleeptime);	2306	time_update (EV_A_ waittime + sleeptime);
1826	}	2307	}
1827		2308
…		…
1838		2319
1839	/* queue check watchers, to be executed first */	2320	/* queue check watchers, to be executed first */
1840	if (expect_false (checkcnt))	2321	if (expect_false (checkcnt))
1841	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2322	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1842		2323
1843	call_pending (EV_A);	2324	EV_INVOKE_PENDING;
1844	}	2325	}
1845	while (expect_true (	2326	while (expect_true (
1846	activecnt	2327	activecnt
1847	&& !loop_done	2328	&& !loop_done
1848	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2329	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1849	));	2330	));
1850		2331
1851	if (loop_done == EVUNLOOP_ONE)	2332	if (loop_done == EVUNLOOP_ONE)
1852	loop_done = EVUNLOOP_CANCEL;	2333	loop_done = EVUNLOOP_CANCEL;
		2334
		2335	#if EV_MINIMAL < 2
		2336	--loop_depth;
		2337	#endif
1853	}	2338	}
1854		2339
1855	void	2340	void
1856	ev_unloop (EV_P_ int how)	2341	ev_unloop (EV_P_ int how)
1857	{	2342	{
1858	loop_done = how;	2343	loop_done = how;
1859	}	2344	}
1860		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
1861	/*****************************************************************************/	2383	/*****************************************************************************/
		2384	/* singly-linked list management, used when the expected list length is short */
1862		2385
1863	void inline_size	2386	inline_size void
1864	wlist_add (WL *head, WL elem)	2387	wlist_add (WL *head, WL elem)
1865	{	2388	{
1866	elem->next = *head;	2389	elem->next = *head;
1867	*head = elem;	2390	*head = elem;
1868	}	2391	}
1869		2392
1870	void inline_size	2393	inline_size void
1871	wlist_del (WL *head, WL elem)	2394	wlist_del (WL *head, WL elem)
1872	{	2395	{
1873	while (*head)	2396	while (*head)
1874	{	2397	{
1875	if (*head == elem)	2398	if (*head == elem)
…		…
1880		2403
1881	head = &(*head)->next;	2404	head = &(*head)->next;
1882	}	2405	}
1883	}	2406	}
1884		2407
1885	void inline_speed	2408	/* internal, faster, version of ev_clear_pending */
		2409	inline_speed void
1886	clear_pending (EV_P_ W w)	2410	clear_pending (EV_P_ W w)
1887	{	2411	{
1888	if (w->pending)	2412	if (w->pending)
1889	{	2413	{
1890	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2414	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1891	w->pending = 0;	2415	w->pending = 0;
1892	}	2416	}
1893	}	2417	}
1894		2418
1895	int	2419	int
…		…
1899	int pending = w_->pending;	2423	int pending = w_->pending;
1900		2424
1901	if (expect_true (pending))	2425	if (expect_true (pending))
1902	{	2426	{
1903	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2427	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2428	p->w = (W)&pending_w;
1904	w_->pending = 0;	2429	w_->pending = 0;
1905	p->w = 0;
1906	return p->events;	2430	return p->events;
1907	}	2431	}
1908	else	2432	else
1909	return 0;	2433	return 0;
1910	}	2434	}
1911		2435
1912	void inline_size	2436	inline_size void
1913	pri_adjust (EV_P_ W w)	2437	pri_adjust (EV_P_ W w)
1914	{	2438	{
1915	int pri = w->priority;	2439	int pri = ev_priority (w);
1916	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2440	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1917	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2441	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1918	w->priority = pri;	2442	ev_set_priority (w, pri);
1919	}	2443	}
1920		2444
1921	void inline_speed	2445	inline_speed void
1922	ev_start (EV_P_ W w, int active)	2446	ev_start (EV_P_ W w, int active)
1923	{	2447	{
1924	pri_adjust (EV_A_ w);	2448	pri_adjust (EV_A_ w);
1925	w->active = active;	2449	w->active = active;
1926	ev_ref (EV_A);	2450	ev_ref (EV_A);
1927	}	2451	}
1928		2452
1929	void inline_size	2453	inline_size void
1930	ev_stop (EV_P_ W w)	2454	ev_stop (EV_P_ W w)
1931	{	2455	{
1932	ev_unref (EV_A);	2456	ev_unref (EV_A);
1933	w->active = 0;	2457	w->active = 0;
1934	}	2458	}
…		…
1941	int fd = w->fd;	2465	int fd = w->fd;
1942		2466
1943	if (expect_false (ev_is_active (w)))	2467	if (expect_false (ev_is_active (w)))
1944	return;	2468	return;
1945		2469
1946	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;
1947		2474
1948	ev_start (EV_A_ (W)w, 1);	2475	ev_start (EV_A_ (W)w, 1);
1949	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2476	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1950	wlist_add (&anfds[fd].head, (WL)w);	2477	wlist_add (&anfds[fd].head, (WL)w);
1951		2478
1952	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2479	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1953	w->events &= ~EV_IOFDSET;	2480	w->events &= ~EV__IOFDSET;
		2481
		2482	EV_FREQUENT_CHECK;
1954	}	2483	}
1955		2484
1956	void noinline	2485	void noinline
1957	ev_io_stop (EV_P_ ev_io *w)	2486	ev_io_stop (EV_P_ ev_io *w)
1958	{	2487	{
1959	clear_pending (EV_A_ (W)w);	2488	clear_pending (EV_A_ (W)w);
1960	if (expect_false (!ev_is_active (w)))	2489	if (expect_false (!ev_is_active (w)))
1961	return;	2490	return;
1962		2491
1963	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;
1964		2495
1965	wlist_del (&anfds[w->fd].head, (WL)w);	2496	wlist_del (&anfds[w->fd].head, (WL)w);
1966	ev_stop (EV_A_ (W)w);	2497	ev_stop (EV_A_ (W)w);
1967		2498
1968	fd_change (EV_A_ w->fd, 1);	2499	fd_change (EV_A_ w->fd, 1);
		2500
		2501	EV_FREQUENT_CHECK;
1969	}	2502	}
1970		2503
1971	void noinline	2504	void noinline
1972	ev_timer_start (EV_P_ ev_timer *w)	2505	ev_timer_start (EV_P_ ev_timer *w)
1973	{	2506	{
1974	if (expect_false (ev_is_active (w)))	2507	if (expect_false (ev_is_active (w)))
1975	return;	2508	return;
1976		2509
1977	ev_at (w) += mn_now;	2510	ev_at (w) += mn_now;
1978		2511
1979	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.));
1980		2513
		2514	EV_FREQUENT_CHECK;
		2515
		2516	++timercnt;
1981	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);	2517	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1982	array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2);	2518	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1983	timers [ev_active (w)] = (WT)w;	2519	ANHE_w (timers [ev_active (w)]) = (WT)w;
		2520	ANHE_at_cache (timers [ev_active (w)]);
1984	upheap (timers, ev_active (w));	2521	upheap (timers, ev_active (w));
1985		2522
		2523	EV_FREQUENT_CHECK;
		2524
1986	/*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/	2525	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1987	}	2526	}
1988		2527
1989	void noinline	2528	void noinline
1990	ev_timer_stop (EV_P_ ev_timer *w)	2529	ev_timer_stop (EV_P_ ev_timer *w)
1991	{	2530	{
1992	clear_pending (EV_A_ (W)w);	2531	clear_pending (EV_A_ (W)w);
1993	if (expect_false (!ev_is_active (w)))	2532	if (expect_false (!ev_is_active (w)))
1994	return;	2533	return;
1995		2534
		2535	EV_FREQUENT_CHECK;
		2536
1996	{	2537	{
1997	int active = ev_active (w);	2538	int active = ev_active (w);
1998		2539
1999	assert (("internal timer heap corruption", timers [active] == (WT)w));	2540	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2000		2541
		2542	--timercnt;
		2543
2001	if (expect_true (active < timercnt + HEAP0 - 1))	2544	if (expect_true (active < timercnt + HEAP0))
2002	{	2545	{
2003	timers [active] = timers [timercnt + HEAP0 - 1];	2546	timers [active] = timers [timercnt + HEAP0];
2004	adjustheap (timers, timercnt, active);	2547	adjustheap (timers, timercnt, active);
2005	}	2548	}
2006
2007	--timercnt;
2008	}	2549	}
		2550
		2551	EV_FREQUENT_CHECK;
2009		2552
2010	ev_at (w) -= mn_now;	2553	ev_at (w) -= mn_now;
2011		2554
2012	ev_stop (EV_A_ (W)w);	2555	ev_stop (EV_A_ (W)w);
2013	}	2556	}
2014		2557
2015	void noinline	2558	void noinline
2016	ev_timer_again (EV_P_ ev_timer *w)	2559	ev_timer_again (EV_P_ ev_timer *w)
2017	{	2560	{
		2561	EV_FREQUENT_CHECK;
		2562
2018	if (ev_is_active (w))	2563	if (ev_is_active (w))
2019	{	2564	{
2020	if (w->repeat)	2565	if (w->repeat)
2021	{	2566	{
2022	ev_at (w) = mn_now + w->repeat;	2567	ev_at (w) = mn_now + w->repeat;
		2568	ANHE_at_cache (timers [ev_active (w)]);
2023	adjustheap (timers, timercnt, ev_active (w));	2569	adjustheap (timers, timercnt, ev_active (w));
2024	}	2570	}
2025	else	2571	else
2026	ev_timer_stop (EV_A_ w);	2572	ev_timer_stop (EV_A_ w);
2027	}	2573	}
2028	else if (w->repeat)	2574	else if (w->repeat)
2029	{	2575	{
2030	ev_at (w) = w->repeat;	2576	ev_at (w) = w->repeat;
2031	ev_timer_start (EV_A_ w);	2577	ev_timer_start (EV_A_ w);
2032	}	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.);
2033	}	2587	}
2034		2588
2035	#if EV_PERIODIC_ENABLE	2589	#if EV_PERIODIC_ENABLE
2036	void noinline	2590	void noinline
2037	ev_periodic_start (EV_P_ ev_periodic *w)	2591	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
2041		2595
2042	if (w->reschedule_cb)	2596	if (w->reschedule_cb)
2043	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2597	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2044	else if (w->interval)	2598	else if (w->interval)
2045	{	2599	{
2046	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.));
2047	/* 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 */
2048	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;
2049	}	2603	}
2050	else	2604	else
2051	ev_at (w) = w->offset;	2605	ev_at (w) = w->offset;
2052		2606
		2607	EV_FREQUENT_CHECK;
		2608
		2609	++periodiccnt;
2053	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);	2610	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2054	array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2);	2611	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2055	periodics [ev_active (w)] = (WT)w;	2612	ANHE_w (periodics [ev_active (w)]) = (WT)w;
		2613	ANHE_at_cache (periodics [ev_active (w)]);
2056	upheap (periodics, ev_active (w));	2614	upheap (periodics, ev_active (w));
2057		2615
		2616	EV_FREQUENT_CHECK;
		2617
2058	/*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));*/
2059	}	2619	}
2060		2620
2061	void noinline	2621	void noinline
2062	ev_periodic_stop (EV_P_ ev_periodic *w)	2622	ev_periodic_stop (EV_P_ ev_periodic *w)
2063	{	2623	{
2064	clear_pending (EV_A_ (W)w);	2624	clear_pending (EV_A_ (W)w);
2065	if (expect_false (!ev_is_active (w)))	2625	if (expect_false (!ev_is_active (w)))
2066	return;	2626	return;
2067		2627
		2628	EV_FREQUENT_CHECK;
		2629
2068	{	2630	{
2069	int active = ev_active (w);	2631	int active = ev_active (w);
2070		2632
2071	assert (("internal periodic heap corruption", periodics [active] == (WT)w));	2633	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2072		2634
		2635	--periodiccnt;
		2636
2073	if (expect_true (active < periodiccnt + HEAP0 - 1))	2637	if (expect_true (active < periodiccnt + HEAP0))
2074	{	2638	{
2075	periodics [active] = periodics [periodiccnt + HEAP0 - 1];	2639	periodics [active] = periodics [periodiccnt + HEAP0];
2076	adjustheap (periodics, periodiccnt, active);	2640	adjustheap (periodics, periodiccnt, active);
2077	}	2641	}
2078
2079	--periodiccnt;
2080	}	2642	}
		2643
		2644	EV_FREQUENT_CHECK;
2081		2645
2082	ev_stop (EV_A_ (W)w);	2646	ev_stop (EV_A_ (W)w);
2083	}	2647	}
2084		2648
2085	void noinline	2649	void noinline
…		…
2096	#endif	2660	#endif
2097		2661
2098	void noinline	2662	void noinline
2099	ev_signal_start (EV_P_ ev_signal *w)	2663	ev_signal_start (EV_P_ ev_signal *w)
2100	{	2664	{
2101	#if EV_MULTIPLICITY
2102	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2103	#endif
2104	if (expect_false (ev_is_active (w)))	2665	if (expect_false (ev_is_active (w)))
2105	return;	2666	return;
2106		2667
2107	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));
2108		2669
2109	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));
2110		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)
2111	{	2681	{
2112	#ifndef _WIN32	2682	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2113	sigset_t full, prev;	2683	if (sigfd < 0 && errno == EINVAL)
2114	sigfillset (&full);	2684	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2115	sigprocmask (SIG_SETMASK, &full, &prev);
2116	#endif
2117		2685
2118	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2686	if (sigfd >= 0)
		2687	{
		2688	fd_intern (sigfd); /* doing it twice will not hurt */
2119		2689
2120	#ifndef _WIN32	2690	sigemptyset (&sigfd_set);
2121	sigprocmask (SIG_SETMASK, &prev, 0);	2691
2122	#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	}
2123	}	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
2124		2708
2125	ev_start (EV_A_ (W)w, 1);	2709	ev_start (EV_A_ (W)w, 1);
2126	wlist_add (&signals [w->signum - 1].head, (WL)w);	2710	wlist_add (&signals [w->signum - 1].head, (WL)w);
2127		2711
2128	if (!((WL)w)->next)	2712	if (!((WL)w)->next)
		2713	# if EV_USE_SIGNALFD
		2714	if (sigfd < 0) /*TODO*/
		2715	# endif
2129	{	2716	{
2130	#if _WIN32	2717	# if _WIN32
2131	signal (w->signum, ev_sighandler);	2718	signal (w->signum, ev_sighandler);
2132	#else	2719	# else
2133	struct sigaction sa;	2720	struct sigaction sa;
		2721
		2722	evpipe_init (EV_A);
		2723
2134	sa.sa_handler = ev_sighandler;	2724	sa.sa_handler = ev_sighandler;
2135	sigfillset (&sa.sa_mask);	2725	sigfillset (&sa.sa_mask);
2136	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 */
2137	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);
2138	#endif	2732	#endif
2139	}	2733	}
		2734
		2735	EV_FREQUENT_CHECK;
2140	}	2736	}
2141		2737
2142	void noinline	2738	void noinline
2143	ev_signal_stop (EV_P_ ev_signal *w)	2739	ev_signal_stop (EV_P_ ev_signal *w)
2144	{	2740	{
2145	clear_pending (EV_A_ (W)w);	2741	clear_pending (EV_A_ (W)w);
2146	if (expect_false (!ev_is_active (w)))	2742	if (expect_false (!ev_is_active (w)))
2147	return;	2743	return;
2148		2744
		2745	EV_FREQUENT_CHECK;
		2746
2149	wlist_del (&signals [w->signum - 1].head, (WL)w);	2747	wlist_del (&signals [w->signum - 1].head, (WL)w);
2150	ev_stop (EV_A_ (W)w);	2748	ev_stop (EV_A_ (W)w);
2151		2749
2152	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
2153	signal (w->signum, SIG_DFL);	2766	signal (w->signum, SIG_DFL);
		2767	}
		2768
		2769	EV_FREQUENT_CHECK;
2154	}	2770	}
2155		2771
2156	void	2772	void
2157	ev_child_start (EV_P_ ev_child *w)	2773	ev_child_start (EV_P_ ev_child *w)
2158	{	2774	{
2159	#if EV_MULTIPLICITY	2775	#if EV_MULTIPLICITY
2160	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));
2161	#endif	2777	#endif
2162	if (expect_false (ev_is_active (w)))	2778	if (expect_false (ev_is_active (w)))
2163	return;	2779	return;
2164		2780
		2781	EV_FREQUENT_CHECK;
		2782
2165	ev_start (EV_A_ (W)w, 1);	2783	ev_start (EV_A_ (W)w, 1);
2166	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;
2167	}	2787	}
2168		2788
2169	void	2789	void
2170	ev_child_stop (EV_P_ ev_child *w)	2790	ev_child_stop (EV_P_ ev_child *w)
2171	{	2791	{
2172	clear_pending (EV_A_ (W)w);	2792	clear_pending (EV_A_ (W)w);
2173	if (expect_false (!ev_is_active (w)))	2793	if (expect_false (!ev_is_active (w)))
2174	return;	2794	return;
2175		2795
		2796	EV_FREQUENT_CHECK;
		2797
2176	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2798	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2177	ev_stop (EV_A_ (W)w);	2799	ev_stop (EV_A_ (W)w);
		2800
		2801	EV_FREQUENT_CHECK;
2178	}	2802	}
2179		2803
2180	#if EV_STAT_ENABLE	2804	#if EV_STAT_ENABLE
2181		2805
2182	# ifdef _WIN32	2806	# ifdef _WIN32
2183	# undef lstat	2807	# undef lstat
2184	# define lstat(a,b) _stati64 (a,b)	2808	# define lstat(a,b) _stati64 (a,b)
2185	# endif	2809	# endif
2186		2810
2187	#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 */
2188	#define MIN_STAT_INTERVAL 0.1074891	2813	#define MIN_STAT_INTERVAL 0.1074891
2189		2814
2190	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);
2191		2816
2192	#if EV_USE_INOTIFY	2817	#if EV_USE_INOTIFY
2193	# define EV_INOTIFY_BUFSIZE 8192	2818	# define EV_INOTIFY_BUFSIZE 8192
…		…
2197	{	2822	{
2198	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);
2199		2824
2200	if (w->wd < 0)	2825	if (w->wd < 0)
2201	{	2826	{
		2827	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2202	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 */
2203		2829
2204	/* monitor some parent directory for speedup hints */	2830	/* monitor some parent directory for speedup hints */
2205	/* note that exceeding the hardcoded limit is not a correctness issue, */	2831	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2206	/* but an efficiency issue only */	2832	/* but an efficiency issue only */
2207	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2833	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2208	{	2834	{
2209	char path [4096];	2835	char path [4096];
2210	strcpy (path, w->path);	2836	strcpy (path, w->path);
…		…
2214	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2840	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2215	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2841	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2216		2842
2217	char *pend = strrchr (path, '/');	2843	char *pend = strrchr (path, '/');
2218		2844
2219	if (!pend)	2845	if (!pend || pend == path)
2220	break; /* whoops, no '/', complain to your admin */	2846	break;
2221		2847
2222	*pend = 0;	2848	*pend = 0;
2223	w->wd = inotify_add_watch (fs_fd, path, mask);	2849	w->wd = inotify_add_watch (fs_fd, path, mask);
2224	}	2850	}
2225	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2851	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2226	}	2852	}
2227	}	2853	}
2228	else
2229	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2230		2854
2231	if (w->wd >= 0)	2855	if (w->wd >= 0)
		2856	{
2232	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	}
2233	}	2876	}
2234		2877
2235	static void noinline	2878	static void noinline
2236	infy_del (EV_P_ ev_stat *w)	2879	infy_del (EV_P_ ev_stat *w)
2237	{	2880	{
…		…
2251		2894
2252	static void noinline	2895	static void noinline
2253	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)
2254	{	2897	{
2255	if (slot < 0)	2898	if (slot < 0)
2256	/* overflow, need to check for all hahs slots */	2899	/* overflow, need to check for all hash slots */
2257	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2900	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2258	infy_wd (EV_A_ slot, wd, ev);	2901	infy_wd (EV_A_ slot, wd, ev);
2259	else	2902	else
2260	{	2903	{
2261	WL w_;	2904	WL w_;
…		…
2267		2910
2268	if (w->wd == wd || wd == -1)	2911	if (w->wd == wd || wd == -1)
2269	{	2912	{
2270	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2913	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2271	{	2914	{
		2915	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2272	w->wd = -1;	2916	w->wd = -1;
2273	infy_add (EV_A_ w); /* re-add, no matter what */	2917	infy_add (EV_A_ w); /* re-add, no matter what */
2274	}	2918	}
2275		2919
2276	stat_timer_cb (EV_A_ &w->timer, 0);	2920	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2289		2933
2290	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)
2291	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2935	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2292	}	2936	}
2293		2937
2294	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
2295	infy_init (EV_P)	2962	infy_init (EV_P)
2296	{	2963	{
2297	if (fs_fd != -2)	2964	if (fs_fd != -2)
2298	return;	2965	return;
		2966
		2967	fs_fd = -1;
		2968
		2969	check_2625 (EV_A);
2299		2970
2300	fs_fd = inotify_init ();	2971	fs_fd = inotify_init ();
2301		2972
2302	if (fs_fd >= 0)	2973	if (fs_fd >= 0)
2303	{	2974	{
…		…
2305	ev_set_priority (&fs_w, EV_MAXPRI);	2976	ev_set_priority (&fs_w, EV_MAXPRI);
2306	ev_io_start (EV_A_ &fs_w);	2977	ev_io_start (EV_A_ &fs_w);
2307	}	2978	}
2308	}	2979	}
2309		2980
2310	void inline_size	2981	inline_size void
2311	infy_fork (EV_P)	2982	infy_fork (EV_P)
2312	{	2983	{
2313	int slot;	2984	int slot;
2314		2985
2315	if (fs_fd < 0)	2986	if (fs_fd < 0)
…		…
2331	w->wd = -1;	3002	w->wd = -1;
2332		3003
2333	if (fs_fd >= 0)	3004	if (fs_fd >= 0)
2334	infy_add (EV_A_ w); /* re-add, no matter what */	3005	infy_add (EV_A_ w); /* re-add, no matter what */
2335	else	3006	else
2336	ev_timer_start (EV_A_ &w->timer);	3007	ev_timer_again (EV_A_ &w->timer);
2337	}	3008	}
2338
2339	}	3009	}
2340	}	3010	}
2341		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)
2342	#endif	3018	#endif
2343		3019
2344	void	3020	void
2345	ev_stat_stat (EV_P_ ev_stat *w)	3021	ev_stat_stat (EV_P_ ev_stat *w)
2346	{	3022	{
…		…
2373	|| w->prev.st_atime != w->attr.st_atime	3049	|| w->prev.st_atime != w->attr.st_atime
2374	|| w->prev.st_mtime != w->attr.st_mtime	3050	|| w->prev.st_mtime != w->attr.st_mtime
2375	|| w->prev.st_ctime != w->attr.st_ctime	3051	|| w->prev.st_ctime != w->attr.st_ctime
2376	) {	3052	) {
2377	#if EV_USE_INOTIFY	3053	#if EV_USE_INOTIFY
		3054	if (fs_fd >= 0)
		3055	{
2378	infy_del (EV_A_ w);	3056	infy_del (EV_A_ w);
2379	infy_add (EV_A_ w);	3057	infy_add (EV_A_ w);
2380	ev_stat_stat (EV_A_ w); /* avoid race... */	3058	ev_stat_stat (EV_A_ w); /* avoid race... */
		3059	}
2381	#endif	3060	#endif
2382		3061
2383	ev_feed_event (EV_A_ w, EV_STAT);	3062	ev_feed_event (EV_A_ w, EV_STAT);
2384	}	3063	}
2385	}	3064	}
…		…
2388	ev_stat_start (EV_P_ ev_stat *w)	3067	ev_stat_start (EV_P_ ev_stat *w)
2389	{	3068	{
2390	if (expect_false (ev_is_active (w)))	3069	if (expect_false (ev_is_active (w)))
2391	return;	3070	return;
2392		3071
2393	/* since we use memcmp, we need to clear any padding data etc. */
2394	memset (&w->prev, 0, sizeof (ev_statdata));
2395	memset (&w->attr, 0, sizeof (ev_statdata));
2396
2397	ev_stat_stat (EV_A_ w);	3072	ev_stat_stat (EV_A_ w);
2398		3073
		3074	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2399	if (w->interval < MIN_STAT_INTERVAL)	3075	w->interval = MIN_STAT_INTERVAL;
2400	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2401		3076
2402	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);
2403	ev_set_priority (&w->timer, ev_priority (w));	3078	ev_set_priority (&w->timer, ev_priority (w));
2404		3079
2405	#if EV_USE_INOTIFY	3080	#if EV_USE_INOTIFY
2406	infy_init (EV_A);	3081	infy_init (EV_A);
2407		3082
2408	if (fs_fd >= 0)	3083	if (fs_fd >= 0)
2409	infy_add (EV_A_ w);	3084	infy_add (EV_A_ w);
2410	else	3085	else
2411	#endif	3086	#endif
2412	ev_timer_start (EV_A_ &w->timer);	3087	ev_timer_again (EV_A_ &w->timer);
2413		3088
2414	ev_start (EV_A_ (W)w, 1);	3089	ev_start (EV_A_ (W)w, 1);
		3090
		3091	EV_FREQUENT_CHECK;
2415	}	3092	}
2416		3093
2417	void	3094	void
2418	ev_stat_stop (EV_P_ ev_stat *w)	3095	ev_stat_stop (EV_P_ ev_stat *w)
2419	{	3096	{
2420	clear_pending (EV_A_ (W)w);	3097	clear_pending (EV_A_ (W)w);
2421	if (expect_false (!ev_is_active (w)))	3098	if (expect_false (!ev_is_active (w)))
2422	return;	3099	return;
2423		3100
		3101	EV_FREQUENT_CHECK;
		3102
2424	#if EV_USE_INOTIFY	3103	#if EV_USE_INOTIFY
2425	infy_del (EV_A_ w);	3104	infy_del (EV_A_ w);
2426	#endif	3105	#endif
2427	ev_timer_stop (EV_A_ &w->timer);	3106	ev_timer_stop (EV_A_ &w->timer);
2428		3107
2429	ev_stop (EV_A_ (W)w);	3108	ev_stop (EV_A_ (W)w);
		3109
		3110	EV_FREQUENT_CHECK;
2430	}	3111	}
2431	#endif	3112	#endif
2432		3113
2433	#if EV_IDLE_ENABLE	3114	#if EV_IDLE_ENABLE
2434	void	3115	void
…		…
2436	{	3117	{
2437	if (expect_false (ev_is_active (w)))	3118	if (expect_false (ev_is_active (w)))
2438	return;	3119	return;
2439		3120
2440	pri_adjust (EV_A_ (W)w);	3121	pri_adjust (EV_A_ (W)w);
		3122
		3123	EV_FREQUENT_CHECK;
2441		3124
2442	{	3125	{
2443	int active = ++idlecnt [ABSPRI (w)];	3126	int active = ++idlecnt [ABSPRI (w)];
2444		3127
2445	++idleall;	3128	++idleall;
2446	ev_start (EV_A_ (W)w, active);	3129	ev_start (EV_A_ (W)w, active);
2447		3130
2448	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);
2449	idles [ABSPRI (w)][active - 1] = w;	3132	idles [ABSPRI (w)][active - 1] = w;
2450	}	3133	}
		3134
		3135	EV_FREQUENT_CHECK;
2451	}	3136	}
2452		3137
2453	void	3138	void
2454	ev_idle_stop (EV_P_ ev_idle *w)	3139	ev_idle_stop (EV_P_ ev_idle *w)
2455	{	3140	{
2456	clear_pending (EV_A_ (W)w);	3141	clear_pending (EV_A_ (W)w);
2457	if (expect_false (!ev_is_active (w)))	3142	if (expect_false (!ev_is_active (w)))
2458	return;	3143	return;
2459		3144
		3145	EV_FREQUENT_CHECK;
		3146
2460	{	3147	{
2461	int active = ev_active (w);	3148	int active = ev_active (w);
2462		3149
2463	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3150	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2464	ev_active (idles [ABSPRI (w)][active - 1]) = active;	3151	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2465		3152
2466	ev_stop (EV_A_ (W)w);	3153	ev_stop (EV_A_ (W)w);
2467	--idleall;	3154	--idleall;
2468	}	3155	}
		3156
		3157	EV_FREQUENT_CHECK;
2469	}	3158	}
2470	#endif	3159	#endif
2471		3160
2472	void	3161	void
2473	ev_prepare_start (EV_P_ ev_prepare *w)	3162	ev_prepare_start (EV_P_ ev_prepare *w)
2474	{	3163	{
2475	if (expect_false (ev_is_active (w)))	3164	if (expect_false (ev_is_active (w)))
2476	return;	3165	return;
		3166
		3167	EV_FREQUENT_CHECK;
2477		3168
2478	ev_start (EV_A_ (W)w, ++preparecnt);	3169	ev_start (EV_A_ (W)w, ++preparecnt);
2479	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3170	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2480	prepares [preparecnt - 1] = w;	3171	prepares [preparecnt - 1] = w;
		3172
		3173	EV_FREQUENT_CHECK;
2481	}	3174	}
2482		3175
2483	void	3176	void
2484	ev_prepare_stop (EV_P_ ev_prepare *w)	3177	ev_prepare_stop (EV_P_ ev_prepare *w)
2485	{	3178	{
2486	clear_pending (EV_A_ (W)w);	3179	clear_pending (EV_A_ (W)w);
2487	if (expect_false (!ev_is_active (w)))	3180	if (expect_false (!ev_is_active (w)))
2488	return;	3181	return;
2489		3182
		3183	EV_FREQUENT_CHECK;
		3184
2490	{	3185	{
2491	int active = ev_active (w);	3186	int active = ev_active (w);
2492		3187
2493	prepares [active - 1] = prepares [--preparecnt];	3188	prepares [active - 1] = prepares [--preparecnt];
2494	ev_active (prepares [active - 1]) = active;	3189	ev_active (prepares [active - 1]) = active;
2495	}	3190	}
2496		3191
2497	ev_stop (EV_A_ (W)w);	3192	ev_stop (EV_A_ (W)w);
		3193
		3194	EV_FREQUENT_CHECK;
2498	}	3195	}
2499		3196
2500	void	3197	void
2501	ev_check_start (EV_P_ ev_check *w)	3198	ev_check_start (EV_P_ ev_check *w)
2502	{	3199	{
2503	if (expect_false (ev_is_active (w)))	3200	if (expect_false (ev_is_active (w)))
2504	return;	3201	return;
		3202
		3203	EV_FREQUENT_CHECK;
2505		3204
2506	ev_start (EV_A_ (W)w, ++checkcnt);	3205	ev_start (EV_A_ (W)w, ++checkcnt);
2507	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3206	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2508	checks [checkcnt - 1] = w;	3207	checks [checkcnt - 1] = w;
		3208
		3209	EV_FREQUENT_CHECK;
2509	}	3210	}
2510		3211
2511	void	3212	void
2512	ev_check_stop (EV_P_ ev_check *w)	3213	ev_check_stop (EV_P_ ev_check *w)
2513	{	3214	{
2514	clear_pending (EV_A_ (W)w);	3215	clear_pending (EV_A_ (W)w);
2515	if (expect_false (!ev_is_active (w)))	3216	if (expect_false (!ev_is_active (w)))
2516	return;	3217	return;
2517		3218
		3219	EV_FREQUENT_CHECK;
		3220
2518	{	3221	{
2519	int active = ev_active (w);	3222	int active = ev_active (w);
2520		3223
2521	checks [active - 1] = checks [--checkcnt];	3224	checks [active - 1] = checks [--checkcnt];
2522	ev_active (checks [active - 1]) = active;	3225	ev_active (checks [active - 1]) = active;
2523	}	3226	}
2524		3227
2525	ev_stop (EV_A_ (W)w);	3228	ev_stop (EV_A_ (W)w);
		3229
		3230	EV_FREQUENT_CHECK;
2526	}	3231	}
2527		3232
2528	#if EV_EMBED_ENABLE	3233	#if EV_EMBED_ENABLE
2529	void noinline	3234	void noinline
2530	ev_embed_sweep (EV_P_ ev_embed *w)	3235	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2547	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3252	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2548	{	3253	{
2549	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3254	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2550		3255
2551	{	3256	{
2552	struct ev_loop *loop = w->other;	3257	EV_P = w->other;
2553		3258
2554	while (fdchangecnt)	3259	while (fdchangecnt)
2555	{	3260	{
2556	fd_reify (EV_A);	3261	fd_reify (EV_A);
2557	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3262	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2558	}	3263	}
2559	}	3264	}
2560	}	3265	}
2561		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
2562	#if 0	3284	#if 0
2563	static void	3285	static void
2564	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3286	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2565	{	3287	{
2566	ev_idle_stop (EV_A_ idle);	3288	ev_idle_stop (EV_A_ idle);
…		…
2572	{	3294	{
2573	if (expect_false (ev_is_active (w)))	3295	if (expect_false (ev_is_active (w)))
2574	return;	3296	return;
2575		3297
2576	{	3298	{
2577	struct ev_loop *loop = w->other;	3299	EV_P = w->other;
2578	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 ()));
2579	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);
2580	}	3302	}
		3303
		3304	EV_FREQUENT_CHECK;
2581		3305
2582	ev_set_priority (&w->io, ev_priority (w));	3306	ev_set_priority (&w->io, ev_priority (w));
2583	ev_io_start (EV_A_ &w->io);	3307	ev_io_start (EV_A_ &w->io);
2584		3308
2585	ev_prepare_init (&w->prepare, embed_prepare_cb);	3309	ev_prepare_init (&w->prepare, embed_prepare_cb);
2586	ev_set_priority (&w->prepare, EV_MINPRI);	3310	ev_set_priority (&w->prepare, EV_MINPRI);
2587	ev_prepare_start (EV_A_ &w->prepare);	3311	ev_prepare_start (EV_A_ &w->prepare);
2588		3312
		3313	ev_fork_init (&w->fork, embed_fork_cb);
		3314	ev_fork_start (EV_A_ &w->fork);
		3315
2589	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3316	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2590		3317
2591	ev_start (EV_A_ (W)w, 1);	3318	ev_start (EV_A_ (W)w, 1);
		3319
		3320	EV_FREQUENT_CHECK;
2592	}	3321	}
2593		3322
2594	void	3323	void
2595	ev_embed_stop (EV_P_ ev_embed *w)	3324	ev_embed_stop (EV_P_ ev_embed *w)
2596	{	3325	{
2597	clear_pending (EV_A_ (W)w);	3326	clear_pending (EV_A_ (W)w);
2598	if (expect_false (!ev_is_active (w)))	3327	if (expect_false (!ev_is_active (w)))
2599	return;	3328	return;
2600		3329
		3330	EV_FREQUENT_CHECK;
		3331
2601	ev_io_stop (EV_A_ &w->io);	3332	ev_io_stop (EV_A_ &w->io);
2602	ev_prepare_stop (EV_A_ &w->prepare);	3333	ev_prepare_stop (EV_A_ &w->prepare);
		3334	ev_fork_stop (EV_A_ &w->fork);
2603		3335
2604	ev_stop (EV_A_ (W)w);	3336	EV_FREQUENT_CHECK;
2605	}	3337	}
2606	#endif	3338	#endif
2607		3339
2608	#if EV_FORK_ENABLE	3340	#if EV_FORK_ENABLE
2609	void	3341	void
2610	ev_fork_start (EV_P_ ev_fork *w)	3342	ev_fork_start (EV_P_ ev_fork *w)
2611	{	3343	{
2612	if (expect_false (ev_is_active (w)))	3344	if (expect_false (ev_is_active (w)))
2613	return;	3345	return;
		3346
		3347	EV_FREQUENT_CHECK;
2614		3348
2615	ev_start (EV_A_ (W)w, ++forkcnt);	3349	ev_start (EV_A_ (W)w, ++forkcnt);
2616	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3350	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2617	forks [forkcnt - 1] = w;	3351	forks [forkcnt - 1] = w;
		3352
		3353	EV_FREQUENT_CHECK;
2618	}	3354	}
2619		3355
2620	void	3356	void
2621	ev_fork_stop (EV_P_ ev_fork *w)	3357	ev_fork_stop (EV_P_ ev_fork *w)
2622	{	3358	{
2623	clear_pending (EV_A_ (W)w);	3359	clear_pending (EV_A_ (W)w);
2624	if (expect_false (!ev_is_active (w)))	3360	if (expect_false (!ev_is_active (w)))
2625	return;	3361	return;
2626		3362
		3363	EV_FREQUENT_CHECK;
		3364
2627	{	3365	{
2628	int active = ev_active (w);	3366	int active = ev_active (w);
2629		3367
2630	forks [active - 1] = forks [--forkcnt];	3368	forks [active - 1] = forks [--forkcnt];
2631	ev_active (forks [active - 1]) = active;	3369	ev_active (forks [active - 1]) = active;
2632	}	3370	}
2633		3371
2634	ev_stop (EV_A_ (W)w);	3372	ev_stop (EV_A_ (W)w);
		3373
		3374	EV_FREQUENT_CHECK;
2635	}	3375	}
2636	#endif	3376	#endif
2637		3377
2638	#if EV_ASYNC_ENABLE	3378	#if EV_ASYNC_ENABLE
2639	void	3379	void
…		…
2641	{	3381	{
2642	if (expect_false (ev_is_active (w)))	3382	if (expect_false (ev_is_active (w)))
2643	return;	3383	return;
2644		3384
2645	evpipe_init (EV_A);	3385	evpipe_init (EV_A);
		3386
		3387	EV_FREQUENT_CHECK;
2646		3388
2647	ev_start (EV_A_ (W)w, ++asynccnt);	3389	ev_start (EV_A_ (W)w, ++asynccnt);
2648	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3390	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2649	asyncs [asynccnt - 1] = w;	3391	asyncs [asynccnt - 1] = w;
		3392
		3393	EV_FREQUENT_CHECK;
2650	}	3394	}
2651		3395
2652	void	3396	void
2653	ev_async_stop (EV_P_ ev_async *w)	3397	ev_async_stop (EV_P_ ev_async *w)
2654	{	3398	{
2655	clear_pending (EV_A_ (W)w);	3399	clear_pending (EV_A_ (W)w);
2656	if (expect_false (!ev_is_active (w)))	3400	if (expect_false (!ev_is_active (w)))
2657	return;	3401	return;
2658		3402
		3403	EV_FREQUENT_CHECK;
		3404
2659	{	3405	{
2660	int active = ev_active (w);	3406	int active = ev_active (w);
2661		3407
2662	asyncs [active - 1] = asyncs [--asynccnt];	3408	asyncs [active - 1] = asyncs [--asynccnt];
2663	ev_active (asyncs [active - 1]) = active;	3409	ev_active (asyncs [active - 1]) = active;
2664	}	3410	}
2665		3411
2666	ev_stop (EV_A_ (W)w);	3412	ev_stop (EV_A_ (W)w);
		3413
		3414	EV_FREQUENT_CHECK;
2667	}	3415	}
2668		3416
2669	void	3417	void
2670	ev_async_send (EV_P_ ev_async *w)	3418	ev_async_send (EV_P_ ev_async *w)
2671	{	3419	{
…		…
2688	once_cb (EV_P_ struct ev_once *once, int revents)	3436	once_cb (EV_P_ struct ev_once *once, int revents)
2689	{	3437	{
2690	void (*cb)(int revents, void *arg) = once->cb;	3438	void (*cb)(int revents, void *arg) = once->cb;
2691	void *arg = once->arg;	3439	void *arg = once->arg;
2692		3440
2693	ev_io_stop (EV_A_ &once->io);	3441	ev_io_stop (EV_A_ &once->io);
2694	ev_timer_stop (EV_A_ &once->to);	3442	ev_timer_stop (EV_A_ &once->to);
2695	ev_free (once);	3443	ev_free (once);
2696		3444
2697	cb (revents, arg);	3445	cb (revents, arg);
2698	}	3446	}
2699		3447
2700	static void	3448	static void
2701	once_cb_io (EV_P_ ev_io *w, int revents)	3449	once_cb_io (EV_P_ ev_io *w, int revents)
2702	{	3450	{
2703	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));
2704	}	3454	}
2705		3455
2706	static void	3456	static void
2707	once_cb_to (EV_P_ ev_timer *w, int revents)	3457	once_cb_to (EV_P_ ev_timer *w, int revents)
2708	{	3458	{
2709	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));
2710	}	3462	}
2711		3463
2712	void	3464	void
2713	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)
2714	{	3466	{
…		…
2736	ev_timer_set (&once->to, timeout, 0.);	3488	ev_timer_set (&once->to, timeout, 0.);
2737	ev_timer_start (EV_A_ &once->to);	3489	ev_timer_start (EV_A_ &once->to);
2738	}	3490	}
2739	}	3491	}
2740		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
2741	#if EV_MULTIPLICITY	3601	#if EV_MULTIPLICITY
2742	#include "ev_wrap.h"	3602	#include "ev_wrap.h"
2743	#endif	3603	#endif
2744		3604
2745	#ifdef __cplusplus	3605	#ifdef __cplusplus

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