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Comparing libev/ev.c (file contents):
Revision 1.232 by root, Tue May 6 15:29:58 2008 UTC vs.
Revision 1.308 by root, Sun Jul 19 20:39:54 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	#if defined (EV_NSIG)
		193	/* use what's provided */
		194	#elif defined (NSIG)
		195	# define EV_NSIG (NSIG)
		196	#elif defined(_NSIG)
		197	# define EV_NSIG (_NSIG)
		198	#elif defined (SIGMAX)
		199	# define EV_NSIG (SIGMAX+1)
		200	#elif defined (SIG_MAX)
		201	# define EV_NSIG (SIG_MAX+1)
		202	#elif defined (_SIG_MAX)
		203	# define EV_NSIG (_SIG_MAX+1)
		204	#elif defined (MAXSIG)
		205	# define EV_NSIG (MAXSIG+1)
		206	#elif defined (MAX_SIG)
		207	# define EV_NSIG (MAX_SIG+1)
		208	#elif defined (SIGARRAYSIZE)
		209	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		210	#elif defined (_sys_nsig)
		211	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		212	#else
		213	# error "unable to find value for NSIG, please report"
		214	/* to make it compile regardless, just remove the above line */
		215	# define EV_NSIG 65
		216	#endif
		217
		218	#ifndef EV_USE_CLOCK_SYSCALL
		219	# if __linux && __GLIBC__ >= 2
		220	# define EV_USE_CLOCK_SYSCALL 1
		221	# else
		222	# define EV_USE_CLOCK_SYSCALL 0
		223	# endif
		224	#endif
		225
168	#ifndef EV_USE_MONOTONIC	226	#ifndef EV_USE_MONOTONIC
		227	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		228	# define EV_USE_MONOTONIC 1
		229	# else
169	# define EV_USE_MONOTONIC 0	230	# define EV_USE_MONOTONIC 0
		231	# endif
170	#endif	232	#endif
171		233
172	#ifndef EV_USE_REALTIME	234	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	235	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	236	#endif
175		237
176	#ifndef EV_USE_NANOSLEEP	238	#ifndef EV_USE_NANOSLEEP
		239	# if _POSIX_C_SOURCE >= 199309L
		240	# define EV_USE_NANOSLEEP 1
		241	# else
177	# define EV_USE_NANOSLEEP 0	242	# define EV_USE_NANOSLEEP 0
		243	# endif
178	#endif	244	#endif
179		245
180	#ifndef EV_USE_SELECT	246	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	247	# define EV_USE_SELECT 1
182	#endif	248	#endif
…		…
235	# else	301	# else
236	# define EV_USE_EVENTFD 0	302	# define EV_USE_EVENTFD 0
237	# endif	303	# endif
238	#endif	304	#endif
239		305
		306	#ifndef EV_USE_SIGNALFD
		307	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9))
		308	# define EV_USE_SIGNALFD 1
		309	# else
		310	# define EV_USE_SIGNALFD 0
		311	# endif
		312	#endif
		313
		314	#if 0 /* debugging */
		315	# define EV_VERIFY 3
		316	# define EV_USE_4HEAP 1
		317	# define EV_HEAP_CACHE_AT 1
		318	#endif
		319
		320	#ifndef EV_VERIFY
		321	# define EV_VERIFY !EV_MINIMAL
		322	#endif
		323
		324	#ifndef EV_USE_4HEAP
		325	# define EV_USE_4HEAP !EV_MINIMAL
		326	#endif
		327
		328	#ifndef EV_HEAP_CACHE_AT
		329	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		330	#endif
		331
		332	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		333	/* which makes programs even slower. might work on other unices, too. */
		334	#if EV_USE_CLOCK_SYSCALL
		335	# include <syscall.h>
		336	# ifdef SYS_clock_gettime
		337	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		338	# undef EV_USE_MONOTONIC
		339	# define EV_USE_MONOTONIC 1
		340	# else
		341	# undef EV_USE_CLOCK_SYSCALL
		342	# define EV_USE_CLOCK_SYSCALL 0
		343	# endif
		344	#endif
		345
240	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	346	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
241		347
242	#ifndef CLOCK_MONOTONIC	348	#ifndef CLOCK_MONOTONIC
243	# undef EV_USE_MONOTONIC	349	# undef EV_USE_MONOTONIC
244	# define EV_USE_MONOTONIC 0	350	# define EV_USE_MONOTONIC 0
…		…
259	# include <sys/select.h>	365	# include <sys/select.h>
260	# endif	366	# endif
261	#endif	367	#endif
262		368
263	#if EV_USE_INOTIFY	369	#if EV_USE_INOTIFY
		370	# include <sys/utsname.h>
		371	# include <sys/statfs.h>
264	# include <sys/inotify.h>	372	# include <sys/inotify.h>
		373	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		374	# ifndef IN_DONT_FOLLOW
		375	# undef EV_USE_INOTIFY
		376	# define EV_USE_INOTIFY 0
		377	# endif
265	#endif	378	#endif
266		379
267	#if EV_SELECT_IS_WINSOCKET	380	#if EV_SELECT_IS_WINSOCKET
268	# include <winsock.h>	381	# include <winsock.h>
269	#endif	382	#endif
270		383
271	#if EV_USE_EVENTFD	384	#if EV_USE_EVENTFD
272	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	385	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273	# include <stdint.h>	386	# include <stdint.h>
		387	# ifndef EFD_NONBLOCK
		388	# define EFD_NONBLOCK O_NONBLOCK
		389	# endif
		390	# ifndef EFD_CLOEXEC
		391	# define EFD_CLOEXEC O_CLOEXEC
		392	# endif
274	# ifdef __cplusplus	393	# ifdef __cplusplus
275	extern "C" {	394	extern "C" {
276	# endif	395	# endif
277	int eventfd (unsigned int initval, int flags);	396	int eventfd (unsigned int initval, int flags);
278	# ifdef __cplusplus	397	# ifdef __cplusplus
279	}	398	}
280	# endif	399	# endif
281	#endif	400	#endif
282		401
		402	#if EV_USE_SIGNALFD
		403	# include <sys/signalfd.h>
		404	#endif
		405
283	/**/	406	/**/
		407
		408	#if EV_VERIFY >= 3
		409	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		410	#else
		411	# define EV_FREQUENT_CHECK do { } while (0)
		412	#endif
284		413
285	/*	414	/*
286	* This is used to avoid floating point rounding problems.	415	* This is used to avoid floating point rounding problems.
287	* It is added to ev_rt_now when scheduling periodics	416	* It is added to ev_rt_now when scheduling periodics
288	* to ensure progress, time-wise, even when rounding	417	* to ensure progress, time-wise, even when rounding
…		…
315	# define inline_speed static noinline	444	# define inline_speed static noinline
316	#else	445	#else
317	# define inline_speed static inline	446	# define inline_speed static inline
318	#endif	447	#endif
319		448
320	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	449	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		450
		451	#if EV_MINPRI == EV_MAXPRI
		452	# define ABSPRI(w) (((W)w), 0)
		453	#else
321	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	454	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		455	#endif
322		456
323	#define EMPTY /* required for microsofts broken pseudo-c compiler */	457	#define EMPTY /* required for microsofts broken pseudo-c compiler */
324	#define EMPTY2(a,b) /* used to suppress some warnings */	458	#define EMPTY2(a,b) /* used to suppress some warnings */
325		459
326	typedef ev_watcher *W;	460	typedef ev_watcher *W;
…		…
328	typedef ev_watcher_time *WT;	462	typedef ev_watcher_time *WT;
329		463
330	#define ev_active(w) ((W)(w))->active	464	#define ev_active(w) ((W)(w))->active
331	#define ev_at(w) ((WT)(w))->at	465	#define ev_at(w) ((WT)(w))->at
332		466
333	#if EV_USE_MONOTONIC	467	#if EV_USE_REALTIME
334	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	468	/* 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 */	469	/* giving it a reasonably high chance of working on typical architetcures */
		470	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		471	#endif
		472
		473	#if EV_USE_MONOTONIC
336	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	474	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
337	#endif	475	#endif
338		476
339	#ifdef _WIN32	477	#ifdef _WIN32
340	# include "ev_win32.c"	478	# include "ev_win32.c"
…		…
349	{	487	{
350	syserr_cb = cb;	488	syserr_cb = cb;
351	}	489	}
352		490
353	static void noinline	491	static void noinline
354	syserr (const char *msg)	492	ev_syserr (const char *msg)
355	{	493	{
356	if (!msg)	494	if (!msg)
357	msg = "(libev) system error";	495	msg = "(libev) system error";
358		496
359	if (syserr_cb)	497	if (syserr_cb)
…		…
405	#define ev_malloc(size) ev_realloc (0, (size))	543	#define ev_malloc(size) ev_realloc (0, (size))
406	#define ev_free(ptr) ev_realloc ((ptr), 0)	544	#define ev_free(ptr) ev_realloc ((ptr), 0)
407		545
408	/*****************************************************************************/	546	/*****************************************************************************/
409		547
		548	/* set in reify when reification needed */
		549	#define EV_ANFD_REIFY 1
		550
		551	/* file descriptor info structure */
410	typedef struct	552	typedef struct
411	{	553	{
412	WL head;	554	WL head;
413	unsigned char events;	555	unsigned char events; /* the events watched for */
		556	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		557	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
414	unsigned char reify;	558	unsigned char unused;
		559	#if EV_USE_EPOLL
		560	unsigned int egen; /* generation counter to counter epoll bugs */
		561	#endif
415	#if EV_SELECT_IS_WINSOCKET	562	#if EV_SELECT_IS_WINSOCKET
416	SOCKET handle;	563	SOCKET handle;
417	#endif	564	#endif
418	} ANFD;	565	} ANFD;
419		566
		567	/* stores the pending event set for a given watcher */
420	typedef struct	568	typedef struct
421	{	569	{
422	W w;	570	W w;
423	int events;	571	int events; /* the pending event set for the given watcher */
424	} ANPENDING;	572	} ANPENDING;
425		573
426	#if EV_USE_INOTIFY	574	#if EV_USE_INOTIFY
		575	/* hash table entry per inotify-id */
427	typedef struct	576	typedef struct
428	{	577	{
429	WL head;	578	WL head;
430	} ANFS;	579	} ANFS;
		580	#endif
		581
		582	/* Heap Entry */
		583	#if EV_HEAP_CACHE_AT
		584	/* a heap element */
		585	typedef struct {
		586	ev_tstamp at;
		587	WT w;
		588	} ANHE;
		589
		590	#define ANHE_w(he) (he).w /* access watcher, read-write */
		591	#define ANHE_at(he) (he).at /* access cached at, read-only */
		592	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		593	#else
		594	/* a heap element */
		595	typedef WT ANHE;
		596
		597	#define ANHE_w(he) (he)
		598	#define ANHE_at(he) (he)->at
		599	#define ANHE_at_cache(he)
431	#endif	600	#endif
432		601
433	#if EV_MULTIPLICITY	602	#if EV_MULTIPLICITY
434		603
435	struct ev_loop	604	struct ev_loop
…		…
454		623
455	static int ev_default_loop_ptr;	624	static int ev_default_loop_ptr;
456		625
457	#endif	626	#endif
458		627
		628	#if EV_MINIMAL < 2
		629	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		630	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		631	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		632	#else
		633	# define EV_RELEASE_CB (void)0
		634	# define EV_ACQUIRE_CB (void)0
		635	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		636	#endif
		637
		638	#define EVUNLOOP_RECURSE 0x80
		639
459	/*****************************************************************************/	640	/*****************************************************************************/
460		641
		642	#ifndef EV_HAVE_EV_TIME
461	ev_tstamp	643	ev_tstamp
462	ev_time (void)	644	ev_time (void)
463	{	645	{
464	#if EV_USE_REALTIME	646	#if EV_USE_REALTIME
		647	if (expect_true (have_realtime))
		648	{
465	struct timespec ts;	649	struct timespec ts;
466	clock_gettime (CLOCK_REALTIME, &ts);	650	clock_gettime (CLOCK_REALTIME, &ts);
467	return ts.tv_sec + ts.tv_nsec * 1e-9;	651	return ts.tv_sec + ts.tv_nsec * 1e-9;
468	#else	652	}
		653	#endif
		654
469	struct timeval tv;	655	struct timeval tv;
470	gettimeofday (&tv, 0);	656	gettimeofday (&tv, 0);
471	return tv.tv_sec + tv.tv_usec * 1e-6;	657	return tv.tv_sec + tv.tv_usec * 1e-6;
472	#endif
473	}	658	}
		659	#endif
474		660
475	ev_tstamp inline_size	661	inline_size ev_tstamp
476	get_clock (void)	662	get_clock (void)
477	{	663	{
478	#if EV_USE_MONOTONIC	664	#if EV_USE_MONOTONIC
479	if (expect_true (have_monotonic))	665	if (expect_true (have_monotonic))
480	{	666	{
…		…
513	struct timeval tv;	699	struct timeval tv;
514		700
515	tv.tv_sec = (time_t)delay;	701	tv.tv_sec = (time_t)delay;
516	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	702	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
517		703
		704	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		705	/* something not guaranteed by newer posix versions, but guaranteed */
		706	/* by older ones */
518	select (0, 0, 0, 0, &tv);	707	select (0, 0, 0, 0, &tv);
519	#endif	708	#endif
520	}	709	}
521	}	710	}
522		711
523	/*****************************************************************************/	712	/*****************************************************************************/
524		713
525	#define MALLOC_ROUND 4096 // prefer to allocate in chunks of this size, must be 2**n and >> 4 longs	714	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
526		715
527	int inline_size	716	/* find a suitable new size for the given array, */
		717	/* hopefully by rounding to a ncie-to-malloc size */
		718	inline_size int
528	array_nextsize (int elem, int cur, int cnt)	719	array_nextsize (int elem, int cur, int cnt)
529	{	720	{
530	int ncur = cur + 1;	721	int ncur = cur + 1;
531		722
532	do	723	do
…		…
549	array_realloc (int elem, void *base, int *cur, int cnt)	740	array_realloc (int elem, void *base, int *cur, int cnt)
550	{	741	{
551	*cur = array_nextsize (elem, *cur, cnt);	742	*cur = array_nextsize (elem, *cur, cnt);
552	return ev_realloc (base, elem * *cur);	743	return ev_realloc (base, elem * *cur);
553	}	744	}
		745
		746	#define array_init_zero(base,count) \
		747	memset ((void *)(base), 0, sizeof (*(base)) * (count))
554		748
555	#define array_needsize(type,base,cur,cnt,init) \	749	#define array_needsize(type,base,cur,cnt,init) \
556	if (expect_false ((cnt) > (cur))) \	750	if (expect_false ((cnt) > (cur))) \
557	{ \	751	{ \
558	int ocur_ = (cur); \	752	int ocur_ = (cur); \
…		…
570	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	764	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
571	}	765	}
572	#endif	766	#endif
573		767
574	#define array_free(stem, idx) \	768	#define array_free(stem, idx) \
575	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	769	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
576		770
577	/*****************************************************************************/	771	/*****************************************************************************/
		772
		773	/* dummy callback for pending events */
		774	static void noinline
		775	pendingcb (EV_P_ ev_prepare *w, int revents)
		776	{
		777	}
578		778
579	void noinline	779	void noinline
580	ev_feed_event (EV_P_ void *w, int revents)	780	ev_feed_event (EV_P_ void *w, int revents)
581	{	781	{
582	W w_ = (W)w;	782	W w_ = (W)w;
…		…
591	pendings [pri][w_->pending - 1].w = w_;	791	pendings [pri][w_->pending - 1].w = w_;
592	pendings [pri][w_->pending - 1].events = revents;	792	pendings [pri][w_->pending - 1].events = revents;
593	}	793	}
594	}	794	}
595		795
596	void inline_speed	796	inline_speed void
		797	feed_reverse (EV_P_ W w)
		798	{
		799	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		800	rfeeds [rfeedcnt++] = w;
		801	}
		802
		803	inline_size void
		804	feed_reverse_done (EV_P_ int revents)
		805	{
		806	do
		807	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		808	while (rfeedcnt);
		809	}
		810
		811	inline_speed void
597	queue_events (EV_P_ W *events, int eventcnt, int type)	812	queue_events (EV_P_ W *events, int eventcnt, int type)
598	{	813	{
599	int i;	814	int i;
600		815
601	for (i = 0; i < eventcnt; ++i)	816	for (i = 0; i < eventcnt; ++i)
602	ev_feed_event (EV_A_ events [i], type);	817	ev_feed_event (EV_A_ events [i], type);
603	}	818	}
604		819
605	/*****************************************************************************/	820	/*****************************************************************************/
606		821
607	void inline_size	822	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)	823	fd_event_nc (EV_P_ int fd, int revents)
622	{	824	{
623	ANFD *anfd = anfds + fd;	825	ANFD *anfd = anfds + fd;
624	ev_io *w;	826	ev_io *w;
625		827
626	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	828	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
630	if (ev)	832	if (ev)
631	ev_feed_event (EV_A_ (W)w, ev);	833	ev_feed_event (EV_A_ (W)w, ev);
632	}	834	}
633	}	835	}
634		836
		837	/* do not submit kernel events for fds that have reify set */
		838	/* because that means they changed while we were polling for new events */
		839	inline_speed void
		840	fd_event (EV_P_ int fd, int revents)
		841	{
		842	ANFD *anfd = anfds + fd;
		843
		844	if (expect_true (!anfd->reify))
		845	fd_event_nc (EV_A_ fd, revents);
		846	}
		847
635	void	848	void
636	ev_feed_fd_event (EV_P_ int fd, int revents)	849	ev_feed_fd_event (EV_P_ int fd, int revents)
637	{	850	{
638	if (fd >= 0 && fd < anfdmax)	851	if (fd >= 0 && fd < anfdmax)
639	fd_event (EV_A_ fd, revents);	852	fd_event_nc (EV_A_ fd, revents);
640	}	853	}
641		854
642	void inline_size	855	/* make sure the external fd watch events are in-sync */
		856	/* with the kernel/libev internal state */
		857	inline_size void
643	fd_reify (EV_P)	858	fd_reify (EV_P)
644	{	859	{
645	int i;	860	int i;
646		861
647	for (i = 0; i < fdchangecnt; ++i)	862	for (i = 0; i < fdchangecnt; ++i)
…		…
656	events |= (unsigned char)w->events;	871	events |= (unsigned char)w->events;
657		872
658	#if EV_SELECT_IS_WINSOCKET	873	#if EV_SELECT_IS_WINSOCKET
659	if (events)	874	if (events)
660	{	875	{
661	unsigned long argp;	876	unsigned long arg;
662	#ifdef EV_FD_TO_WIN32_HANDLE	877	#ifdef EV_FD_TO_WIN32_HANDLE
663	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	878	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
664	#else	879	#else
665	anfd->handle = _get_osfhandle (fd);	880	anfd->handle = _get_osfhandle (fd);
666	#endif	881	#endif
667	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	882	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
668	}	883	}
669	#endif	884	#endif
670		885
671	{	886	{
672	unsigned char o_events = anfd->events;	887	unsigned char o_events = anfd->events;
673	unsigned char o_reify = anfd->reify;	888	unsigned char o_reify = anfd->reify;
674		889
675	anfd->reify = 0;	890	anfd->reify = 0;
676	anfd->events = events;	891	anfd->events = events;
677		892
678	if (o_events != events || o_reify & EV_IOFDSET)	893	if (o_events != events || o_reify & EV__IOFDSET)
679	backend_modify (EV_A_ fd, o_events, events);	894	backend_modify (EV_A_ fd, o_events, events);
680	}	895	}
681	}	896	}
682		897
683	fdchangecnt = 0;	898	fdchangecnt = 0;
684	}	899	}
685		900
686	void inline_size	901	/* something about the given fd changed */
		902	inline_size void
687	fd_change (EV_P_ int fd, int flags)	903	fd_change (EV_P_ int fd, int flags)
688	{	904	{
689	unsigned char reify = anfds [fd].reify;	905	unsigned char reify = anfds [fd].reify;
690	anfds [fd].reify |= flags;	906	anfds [fd].reify |= flags;
691		907
…		…
695	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	911	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
696	fdchanges [fdchangecnt - 1] = fd;	912	fdchanges [fdchangecnt - 1] = fd;
697	}	913	}
698	}	914	}
699		915
700	void inline_speed	916	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		917	inline_speed void
701	fd_kill (EV_P_ int fd)	918	fd_kill (EV_P_ int fd)
702	{	919	{
703	ev_io *w;	920	ev_io *w;
704		921
705	while ((w = (ev_io *)anfds [fd].head))	922	while ((w = (ev_io *)anfds [fd].head))
…		…
707	ev_io_stop (EV_A_ w);	924	ev_io_stop (EV_A_ w);
708	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	925	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
709	}	926	}
710	}	927	}
711		928
712	int inline_size	929	/* check whether the given fd is atcually valid, for error recovery */
		930	inline_size int
713	fd_valid (int fd)	931	fd_valid (int fd)
714	{	932	{
715	#ifdef _WIN32	933	#ifdef _WIN32
716	return _get_osfhandle (fd) != -1;	934	return _get_osfhandle (fd) != -1;
717	#else	935	#else
…		…
725	{	943	{
726	int fd;	944	int fd;
727		945
728	for (fd = 0; fd < anfdmax; ++fd)	946	for (fd = 0; fd < anfdmax; ++fd)
729	if (anfds [fd].events)	947	if (anfds [fd].events)
730	if (!fd_valid (fd) == -1 && errno == EBADF)	948	if (!fd_valid (fd) && errno == EBADF)
731	fd_kill (EV_A_ fd);	949	fd_kill (EV_A_ fd);
732	}	950	}
733		951
734	/* called on ENOMEM in select/poll to kill some fds and retry */	952	/* called on ENOMEM in select/poll to kill some fds and retry */
735	static void noinline	953	static void noinline
…		…
739		957
740	for (fd = anfdmax; fd--; )	958	for (fd = anfdmax; fd--; )
741	if (anfds [fd].events)	959	if (anfds [fd].events)
742	{	960	{
743	fd_kill (EV_A_ fd);	961	fd_kill (EV_A_ fd);
744	return;	962	break;
745	}	963	}
746	}	964	}
747		965
748	/* usually called after fork if backend needs to re-arm all fds from scratch */	966	/* usually called after fork if backend needs to re-arm all fds from scratch */
749	static void noinline	967	static void noinline
…		…
753		971
754	for (fd = 0; fd < anfdmax; ++fd)	972	for (fd = 0; fd < anfdmax; ++fd)
755	if (anfds [fd].events)	973	if (anfds [fd].events)
756	{	974	{
757	anfds [fd].events = 0;	975	anfds [fd].events = 0;
		976	anfds [fd].emask = 0;
758	fd_change (EV_A_ fd, EV_IOFDSET | 1);	977	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
759	}	978	}
760	}	979	}
761		980
762	/*****************************************************************************/	981	/*****************************************************************************/
763		982
		983	/*
		984	* the heap functions want a real array index. array index 0 uis guaranteed to not
		985	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		986	* the branching factor of the d-tree.
		987	*/
		988
		989	/*
		990	* at the moment we allow libev the luxury of two heaps,
		991	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		992	* which is more cache-efficient.
		993	* the difference is about 5% with 50000+ watchers.
		994	*/
		995	#if EV_USE_4HEAP
		996
		997	#define DHEAP 4
		998	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		999	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		1000	#define UPHEAP_DONE(p,k) ((p) == (k))
		1001
		1002	/* away from the root */
		1003	inline_speed void
		1004	downheap (ANHE *heap, int N, int k)
		1005	{
		1006	ANHE he = heap [k];
		1007	ANHE *E = heap + N + HEAP0;
		1008
		1009	for (;;)
		1010	{
		1011	ev_tstamp minat;
		1012	ANHE *minpos;
		1013	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
		1014
		1015	/* find minimum child */
		1016	if (expect_true (pos + DHEAP - 1 < E))
		1017	{
		1018	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1019	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1020	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1021	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1022	}
		1023	else if (pos < E)
		1024	{
		1025	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1026	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1027	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1028	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1029	}
		1030	else
		1031	break;
		1032
		1033	if (ANHE_at (he) <= minat)
		1034	break;
		1035
		1036	heap [k] = *minpos;
		1037	ev_active (ANHE_w (*minpos)) = k;
		1038
		1039	k = minpos - heap;
		1040	}
		1041
		1042	heap [k] = he;
		1043	ev_active (ANHE_w (he)) = k;
		1044	}
		1045
		1046	#else /* 4HEAP */
		1047
		1048	#define HEAP0 1
		1049	#define HPARENT(k) ((k) >> 1)
		1050	#define UPHEAP_DONE(p,k) (!(p))
		1051
		1052	/* away from the root */
		1053	inline_speed void
		1054	downheap (ANHE *heap, int N, int k)
		1055	{
		1056	ANHE he = heap [k];
		1057
		1058	for (;;)
		1059	{
		1060	int c = k << 1;
		1061
		1062	if (c > N + HEAP0 - 1)
		1063	break;
		1064
		1065	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		1066	? 1 : 0;
		1067
		1068	if (ANHE_at (he) <= ANHE_at (heap [c]))
		1069	break;
		1070
		1071	heap [k] = heap [c];
		1072	ev_active (ANHE_w (heap [k])) = k;
		1073
		1074	k = c;
		1075	}
		1076
		1077	heap [k] = he;
		1078	ev_active (ANHE_w (he)) = k;
		1079	}
		1080	#endif
		1081
764	/* towards the root */	1082	/* towards the root */
765	void inline_speed	1083	inline_speed void
766	upheap (WT *heap, int k)	1084	upheap (ANHE *heap, int k)
767	{	1085	{
768	WT w = heap [k];	1086	ANHE he = heap [k];
769		1087
770	for (;;)	1088	for (;;)
771	{	1089	{
772	int p = k >> 1;	1090	int p = HPARENT (k);
773		1091
774	/* maybe we could use a dummy element at heap [0]? */	1092	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
775	if (!p || heap [p]->at <= w->at)
776	break;	1093	break;
777		1094
778	heap [k] = heap [p];	1095	heap [k] = heap [p];
779	ev_active (heap [k]) = k;	1096	ev_active (ANHE_w (heap [k])) = k;
780	k = p;	1097	k = p;
781	}	1098	}
782		1099
783	heap [k] = w;	1100	heap [k] = he;
784	ev_active (heap [k]) = k;	1101	ev_active (ANHE_w (he)) = k;
785	}	1102	}
786		1103
787	/* away from the root */	1104	/* move an element suitably so it is in a correct place */
788	void inline_speed	1105	inline_size void
789	downheap (WT *heap, int N, int k)
790	{
791	WT w = heap [k];
792
793	for (;;)
794	{
795	int c = k << 1;
796
797	if (c > N)
798	break;
799
800	c += c < N && heap [c]->at > heap [c + 1]->at
801	? 1 : 0;
802
803	if (w->at <= heap [c]->at)
804	break;
805
806	heap [k] = heap [c];
807	ev_active (heap [k]) = k;
808
809	k = c;
810	}
811
812	heap [k] = w;
813	ev_active (heap [k]) = k;
814	}
815
816	void inline_size
817	adjustheap (WT *heap, int N, int k)	1106	adjustheap (ANHE *heap, int N, int k)
818	{	1107	{
		1108	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
819	upheap (heap, k);	1109	upheap (heap, k);
		1110	else
820	downheap (heap, N, k);	1111	downheap (heap, N, k);
		1112	}
		1113
		1114	/* rebuild the heap: this function is used only once and executed rarely */
		1115	inline_size void
		1116	reheap (ANHE *heap, int N)
		1117	{
		1118	int i;
		1119
		1120	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1121	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1122	for (i = 0; i < N; ++i)
		1123	upheap (heap, i + HEAP0);
821	}	1124	}
822		1125
823	/*****************************************************************************/	1126	/*****************************************************************************/
824		1127
		1128	/* associate signal watchers to a signal signal */
825	typedef struct	1129	typedef struct
826	{	1130	{
		1131	EV_ATOMIC_T pending;
		1132	#if EV_MULTIPLICITY
		1133	EV_P;
		1134	#endif
827	WL head;	1135	WL head;
828	EV_ATOMIC_T gotsig;
829	} ANSIG;	1136	} ANSIG;
830		1137
831	static ANSIG *signals;	1138	static ANSIG signals [EV_NSIG - 1];
832	static int signalmax;
833
834	static EV_ATOMIC_T gotsig;
835
836	void inline_size
837	signals_init (ANSIG *base, int count)
838	{
839	while (count--)
840	{
841	base->head = 0;
842	base->gotsig = 0;
843
844	++base;
845	}
846	}
847		1139
848	/*****************************************************************************/	1140	/*****************************************************************************/
849		1141
850	void inline_speed	1142	/* used to prepare libev internal fd's */
		1143	/* this is not fork-safe */
		1144	inline_speed void
851	fd_intern (int fd)	1145	fd_intern (int fd)
852	{	1146	{
853	#ifdef _WIN32	1147	#ifdef _WIN32
854	int arg = 1;	1148	unsigned long arg = 1;
855	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1149	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
856	#else	1150	#else
857	fcntl (fd, F_SETFD, FD_CLOEXEC);	1151	fcntl (fd, F_SETFD, FD_CLOEXEC);
858	fcntl (fd, F_SETFL, O_NONBLOCK);	1152	fcntl (fd, F_SETFL, O_NONBLOCK);
859	#endif	1153	#endif
860	}	1154	}
861		1155
862	static void noinline	1156	static void noinline
863	evpipe_init (EV_P)	1157	evpipe_init (EV_P)
864	{	1158	{
865	if (!ev_is_active (&pipeev))	1159	if (!ev_is_active (&pipe_w))
866	{	1160	{
867	#if EV_USE_EVENTFD	1161	#if EV_USE_EVENTFD
		1162	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1163	if (evfd < 0 && errno == EINVAL)
868	if ((evfd = eventfd (0, 0)) >= 0)	1164	evfd = eventfd (0, 0);
		1165
		1166	if (evfd >= 0)
869	{	1167	{
870	evpipe [0] = -1;	1168	evpipe [0] = -1;
871	fd_intern (evfd);	1169	fd_intern (evfd); /* doing it twice doesn't hurt */
872	ev_io_set (&pipeev, evfd, EV_READ);	1170	ev_io_set (&pipe_w, evfd, EV_READ);
873	}	1171	}
874	else	1172	else
875	#endif	1173	#endif
876	{	1174	{
877	while (pipe (evpipe))	1175	while (pipe (evpipe))
878	syserr ("(libev) error creating signal/async pipe");	1176	ev_syserr ("(libev) error creating signal/async pipe");
879		1177
880	fd_intern (evpipe [0]);	1178	fd_intern (evpipe [0]);
881	fd_intern (evpipe [1]);	1179	fd_intern (evpipe [1]);
882	ev_io_set (&pipeev, evpipe [0], EV_READ);	1180	ev_io_set (&pipe_w, evpipe [0], EV_READ);
883	}	1181	}
884		1182
885	ev_io_start (EV_A_ &pipeev);	1183	ev_io_start (EV_A_ &pipe_w);
886	ev_unref (EV_A); /* watcher should not keep loop alive */	1184	ev_unref (EV_A); /* watcher should not keep loop alive */
887	}	1185	}
888	}	1186	}
889		1187
890	void inline_size	1188	inline_size void
891	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1189	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
892	{	1190	{
893	if (!*flag)	1191	if (!*flag)
894	{	1192	{
895	int old_errno = errno; /* save errno because write might clobber it */	1193	int old_errno = errno; /* save errno because write might clobber it */
…		…
908		1206
909	errno = old_errno;	1207	errno = old_errno;
910	}	1208	}
911	}	1209	}
912		1210
		1211	/* called whenever the libev signal pipe */
		1212	/* got some events (signal, async) */
913	static void	1213	static void
914	pipecb (EV_P_ ev_io *iow, int revents)	1214	pipecb (EV_P_ ev_io *iow, int revents)
915	{	1215	{
		1216	int i;
		1217
916	#if EV_USE_EVENTFD	1218	#if EV_USE_EVENTFD
917	if (evfd >= 0)	1219	if (evfd >= 0)
918	{	1220	{
919	uint64_t counter;	1221	uint64_t counter;
920	read (evfd, &counter, sizeof (uint64_t));	1222	read (evfd, &counter, sizeof (uint64_t));
…		…
924	{	1226	{
925	char dummy;	1227	char dummy;
926	read (evpipe [0], &dummy, 1);	1228	read (evpipe [0], &dummy, 1);
927	}	1229	}
928		1230
929	if (gotsig && ev_is_default_loop (EV_A))	1231	if (sig_pending)
930	{	1232	{
931	int signum;	1233	sig_pending = 0;
932	gotsig = 0;
933		1234
934	for (signum = signalmax; signum--; )	1235	for (i = EV_NSIG - 1; i--; )
935	if (signals [signum].gotsig)	1236	if (expect_false (signals [i].pending))
936	ev_feed_signal_event (EV_A_ signum + 1);	1237	ev_feed_signal_event (EV_A_ i + 1);
937	}	1238	}
938		1239
939	#if EV_ASYNC_ENABLE	1240	#if EV_ASYNC_ENABLE
940	if (gotasync)	1241	if (async_pending)
941	{	1242	{
942	int i;	1243	async_pending = 0;
943	gotasync = 0;
944		1244
945	for (i = asynccnt; i--; )	1245	for (i = asynccnt; i--; )
946	if (asyncs [i]->sent)	1246	if (asyncs [i]->sent)
947	{	1247	{
948	asyncs [i]->sent = 0;	1248	asyncs [i]->sent = 0;
…		…
956		1256
957	static void	1257	static void
958	ev_sighandler (int signum)	1258	ev_sighandler (int signum)
959	{	1259	{
960	#if EV_MULTIPLICITY	1260	#if EV_MULTIPLICITY
961	struct ev_loop *loop = &default_loop_struct;	1261	EV_P = signals [signum - 1].loop;
962	#endif	1262	#endif
963		1263
964	#if _WIN32	1264	#if _WIN32
965	signal (signum, ev_sighandler);	1265	signal (signum, ev_sighandler);
966	#endif	1266	#endif
967		1267
968	signals [signum - 1].gotsig = 1;	1268	signals [signum - 1].pending = 1;
969	evpipe_write (EV_A_ &gotsig);	1269	evpipe_write (EV_A_ &sig_pending);
970	}	1270	}
971		1271
972	void noinline	1272	void noinline
973	ev_feed_signal_event (EV_P_ int signum)	1273	ev_feed_signal_event (EV_P_ int signum)
974	{	1274	{
975	WL w;	1275	WL w;
976		1276
		1277	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1278	return;
		1279
		1280	--signum;
		1281
977	#if EV_MULTIPLICITY	1282	#if EV_MULTIPLICITY
978	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1283	/* it is permissible to try to feed a signal to the wrong loop */
979	#endif	1284	/* or, likely more useful, feeding a signal nobody is waiting for */
980		1285
981	--signum;	1286	if (expect_false (signals [signum].loop != EV_A))
982
983	if (signum < 0 || signum >= signalmax)
984	return;	1287	return;
		1288	#endif
985		1289
986	signals [signum].gotsig = 0;	1290	signals [signum].pending = 0;
987		1291
988	for (w = signals [signum].head; w; w = w->next)	1292	for (w = signals [signum].head; w; w = w->next)
989	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1293	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
990	}	1294	}
991		1295
		1296	#if EV_USE_SIGNALFD
		1297	static void
		1298	sigfdcb (EV_P_ ev_io *iow, int revents)
		1299	{
		1300	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1301
		1302	for (;;)
		1303	{
		1304	ssize_t res = read (sigfd, si, sizeof (si));
		1305
		1306	/* not ISO-C, as res might be -1, but works with SuS */
		1307	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1308	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1309
		1310	if (res < (ssize_t)sizeof (si))
		1311	break;
		1312	}
		1313	}
		1314	#endif
		1315
992	/*****************************************************************************/	1316	/*****************************************************************************/
993		1317
994	static WL childs [EV_PID_HASHSIZE];	1318	static WL childs [EV_PID_HASHSIZE];
995		1319
996	#ifndef _WIN32	1320	#ifndef _WIN32
…		…
999		1323
1000	#ifndef WIFCONTINUED	1324	#ifndef WIFCONTINUED
1001	# define WIFCONTINUED(status) 0	1325	# define WIFCONTINUED(status) 0
1002	#endif	1326	#endif
1003		1327
1004	void inline_speed	1328	/* handle a single child status event */
		1329	inline_speed void
1005	child_reap (EV_P_ int chain, int pid, int status)	1330	child_reap (EV_P_ int chain, int pid, int status)
1006	{	1331	{
1007	ev_child *w;	1332	ev_child *w;
1008	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1333	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1009		1334
…		…
1022		1347
1023	#ifndef WCONTINUED	1348	#ifndef WCONTINUED
1024	# define WCONTINUED 0	1349	# define WCONTINUED 0
1025	#endif	1350	#endif
1026		1351
		1352	/* called on sigchld etc., calls waitpid */
1027	static void	1353	static void
1028	childcb (EV_P_ ev_signal *sw, int revents)	1354	childcb (EV_P_ ev_signal *sw, int revents)
1029	{	1355	{
1030	int pid, status;	1356	int pid, status;
1031		1357
…		…
1112	/* kqueue is borked on everything but netbsd apparently */	1438	/* kqueue is borked on everything but netbsd apparently */
1113	/* it usually doesn't work correctly on anything but sockets and pipes */	1439	/* it usually doesn't work correctly on anything but sockets and pipes */
1114	flags &= ~EVBACKEND_KQUEUE;	1440	flags &= ~EVBACKEND_KQUEUE;
1115	#endif	1441	#endif
1116	#ifdef __APPLE__	1442	#ifdef __APPLE__
1117	// flags &= ~EVBACKEND_KQUEUE; for documentation	1443	/* only select works correctly on that "unix-certified" platform */
1118	flags &= ~EVBACKEND_POLL;	1444	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1445	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1119	#endif	1446	#endif
1120		1447
1121	return flags;	1448	return flags;
1122	}	1449	}
1123		1450
…		…
1137	ev_backend (EV_P)	1464	ev_backend (EV_P)
1138	{	1465	{
1139	return backend;	1466	return backend;
1140	}	1467	}
1141		1468
		1469	#if EV_MINIMAL < 2
1142	unsigned int	1470	unsigned int
1143	ev_loop_count (EV_P)	1471	ev_loop_count (EV_P)
1144	{	1472	{
1145	return loop_count;	1473	return loop_count;
1146	}	1474	}
1147		1475
		1476	unsigned int
		1477	ev_loop_depth (EV_P)
		1478	{
		1479	return loop_depth;
		1480	}
		1481
1148	void	1482	void
1149	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1483	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1150	{	1484	{
1151	io_blocktime = interval;	1485	io_blocktime = interval;
1152	}	1486	}
…		…
1155	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1489	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1156	{	1490	{
1157	timeout_blocktime = interval;	1491	timeout_blocktime = interval;
1158	}	1492	}
1159		1493
		1494	void
		1495	ev_set_userdata (EV_P_ void *data)
		1496	{
		1497	userdata = data;
		1498	}
		1499
		1500	void *
		1501	ev_userdata (EV_P)
		1502	{
		1503	return userdata;
		1504	}
		1505
		1506	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1507	{
		1508	invoke_cb = invoke_pending_cb;
		1509	}
		1510
		1511	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1512	{
		1513	release_cb = release;
		1514	acquire_cb = acquire;
		1515	}
		1516	#endif
		1517
		1518	/* initialise a loop structure, must be zero-initialised */
1160	static void noinline	1519	static void noinline
1161	loop_init (EV_P_ unsigned int flags)	1520	loop_init (EV_P_ unsigned int flags)
1162	{	1521	{
1163	if (!backend)	1522	if (!backend)
1164	{	1523	{
		1524	#if EV_USE_REALTIME
		1525	if (!have_realtime)
		1526	{
		1527	struct timespec ts;
		1528
		1529	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1530	have_realtime = 1;
		1531	}
		1532	#endif
		1533
1165	#if EV_USE_MONOTONIC	1534	#if EV_USE_MONOTONIC
		1535	if (!have_monotonic)
1166	{	1536	{
1167	struct timespec ts;	1537	struct timespec ts;
		1538
1168	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1539	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1169	have_monotonic = 1;	1540	have_monotonic = 1;
1170	}	1541	}
1171	#endif	1542	#endif
		1543
		1544	/* pid check not overridable via env */
		1545	#ifndef _WIN32
		1546	if (flags & EVFLAG_FORKCHECK)
		1547	curpid = getpid ();
		1548	#endif
		1549
		1550	if (!(flags & EVFLAG_NOENV)
		1551	&& !enable_secure ()
		1552	&& getenv ("LIBEV_FLAGS"))
		1553	flags = atoi (getenv ("LIBEV_FLAGS"));
1172		1554
1173	ev_rt_now = ev_time ();	1555	ev_rt_now = ev_time ();
1174	mn_now = get_clock ();	1556	mn_now = get_clock ();
1175	now_floor = mn_now;	1557	now_floor = mn_now;
1176	rtmn_diff = ev_rt_now - mn_now;	1558	rtmn_diff = ev_rt_now - mn_now;
		1559	#if EV_MINIMAL < 2
		1560	invoke_cb = ev_invoke_pending;
		1561	#endif
1177		1562
1178	io_blocktime = 0.;	1563	io_blocktime = 0.;
1179	timeout_blocktime = 0.;	1564	timeout_blocktime = 0.;
1180	backend = 0;	1565	backend = 0;
1181	backend_fd = -1;	1566	backend_fd = -1;
1182	gotasync = 0;	1567	sig_pending = 0;
		1568	#if EV_ASYNC_ENABLE
		1569	async_pending = 0;
		1570	#endif
1183	#if EV_USE_INOTIFY	1571	#if EV_USE_INOTIFY
1184	fs_fd = -2;	1572	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1185	#endif	1573	#endif
1186		1574	#if EV_USE_SIGNALFD
1187	/* pid check not overridable via env */	1575	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1188	#ifndef _WIN32
1189	if (flags & EVFLAG_FORKCHECK)
1190	curpid = getpid ();
1191	#endif	1576	#endif
1192
1193	if (!(flags & EVFLAG_NOENV)
1194	&& !enable_secure ()
1195	&& getenv ("LIBEV_FLAGS"))
1196	flags = atoi (getenv ("LIBEV_FLAGS"));
1197		1577
1198	if (!(flags & 0x0000ffffU))	1578	if (!(flags & 0x0000ffffU))
1199	flags |= ev_recommended_backends ();	1579	flags |= ev_recommended_backends ();
1200		1580
1201	#if EV_USE_PORT	1581	#if EV_USE_PORT
…		…
1212	#endif	1592	#endif
1213	#if EV_USE_SELECT	1593	#if EV_USE_SELECT
1214	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1594	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1215	#endif	1595	#endif
1216		1596
		1597	ev_prepare_init (&pending_w, pendingcb);
		1598
1217	ev_init (&pipeev, pipecb);	1599	ev_init (&pipe_w, pipecb);
1218	ev_set_priority (&pipeev, EV_MAXPRI);	1600	ev_set_priority (&pipe_w, EV_MAXPRI);
1219	}	1601	}
1220	}	1602	}
1221		1603
		1604	/* free up a loop structure */
1222	static void noinline	1605	static void noinline
1223	loop_destroy (EV_P)	1606	loop_destroy (EV_P)
1224	{	1607	{
1225	int i;	1608	int i;
1226		1609
1227	if (ev_is_active (&pipeev))	1610	if (ev_is_active (&pipe_w))
1228	{	1611	{
1229	ev_ref (EV_A); /* signal watcher */	1612	/*ev_ref (EV_A);*/
1230	ev_io_stop (EV_A_ &pipeev);	1613	/*ev_io_stop (EV_A_ &pipe_w);*/
1231		1614
1232	#if EV_USE_EVENTFD	1615	#if EV_USE_EVENTFD
1233	if (evfd >= 0)	1616	if (evfd >= 0)
1234	close (evfd);	1617	close (evfd);
1235	#endif	1618	#endif
…		…
1239	close (evpipe [0]);	1622	close (evpipe [0]);
1240	close (evpipe [1]);	1623	close (evpipe [1]);
1241	}	1624	}
1242	}	1625	}
1243		1626
		1627	#if EV_USE_SIGNALFD
		1628	if (ev_is_active (&sigfd_w))
		1629	{
		1630	/*ev_ref (EV_A);*/
		1631	/*ev_io_stop (EV_A_ &sigfd_w);*/
		1632
		1633	close (sigfd);
		1634	}
		1635	#endif
		1636
1244	#if EV_USE_INOTIFY	1637	#if EV_USE_INOTIFY
1245	if (fs_fd >= 0)	1638	if (fs_fd >= 0)
1246	close (fs_fd);	1639	close (fs_fd);
1247	#endif	1640	#endif
1248		1641
…		…
1271	#if EV_IDLE_ENABLE	1664	#if EV_IDLE_ENABLE
1272	array_free (idle, [i]);	1665	array_free (idle, [i]);
1273	#endif	1666	#endif
1274	}	1667	}
1275		1668
1276	ev_free (anfds); anfdmax = 0;	1669	ev_free (anfds); anfds = 0; anfdmax = 0;
1277		1670
1278	/* have to use the microsoft-never-gets-it-right macro */	1671	/* have to use the microsoft-never-gets-it-right macro */
		1672	array_free (rfeed, EMPTY);
1279	array_free (fdchange, EMPTY);	1673	array_free (fdchange, EMPTY);
1280	array_free (timer, EMPTY);	1674	array_free (timer, EMPTY);
1281	#if EV_PERIODIC_ENABLE	1675	#if EV_PERIODIC_ENABLE
1282	array_free (periodic, EMPTY);	1676	array_free (periodic, EMPTY);
1283	#endif	1677	#endif
…		…
1292		1686
1293	backend = 0;	1687	backend = 0;
1294	}	1688	}
1295		1689
1296	#if EV_USE_INOTIFY	1690	#if EV_USE_INOTIFY
1297	void inline_size infy_fork (EV_P);	1691	inline_size void infy_fork (EV_P);
1298	#endif	1692	#endif
1299		1693
1300	void inline_size	1694	inline_size void
1301	loop_fork (EV_P)	1695	loop_fork (EV_P)
1302	{	1696	{
1303	#if EV_USE_PORT	1697	#if EV_USE_PORT
1304	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1698	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1305	#endif	1699	#endif
…		…
1311	#endif	1705	#endif
1312	#if EV_USE_INOTIFY	1706	#if EV_USE_INOTIFY
1313	infy_fork (EV_A);	1707	infy_fork (EV_A);
1314	#endif	1708	#endif
1315		1709
1316	if (ev_is_active (&pipeev))	1710	if (ev_is_active (&pipe_w))
1317	{	1711	{
1318	/* this "locks" the handlers against writing to the pipe */	1712	/* this "locks" the handlers against writing to the pipe */
1319	/* while we modify the fd vars */	1713	/* while we modify the fd vars */
1320	gotsig = 1;	1714	sig_pending = 1;
1321	#if EV_ASYNC_ENABLE	1715	#if EV_ASYNC_ENABLE
1322	gotasync = 1;	1716	async_pending = 1;
1323	#endif	1717	#endif
1324		1718
1325	ev_ref (EV_A);	1719	ev_ref (EV_A);
1326	ev_io_stop (EV_A_ &pipeev);	1720	ev_io_stop (EV_A_ &pipe_w);
1327		1721
1328	#if EV_USE_EVENTFD	1722	#if EV_USE_EVENTFD
1329	if (evfd >= 0)	1723	if (evfd >= 0)
1330	close (evfd);	1724	close (evfd);
1331	#endif	1725	#endif
…		…
1336	close (evpipe [1]);	1730	close (evpipe [1]);
1337	}	1731	}
1338		1732
1339	evpipe_init (EV_A);	1733	evpipe_init (EV_A);
1340	/* now iterate over everything, in case we missed something */	1734	/* now iterate over everything, in case we missed something */
1341	pipecb (EV_A_ &pipeev, EV_READ);	1735	pipecb (EV_A_ &pipe_w, EV_READ);
1342	}	1736	}
1343		1737
1344	postfork = 0;	1738	postfork = 0;
1345	}	1739	}
1346		1740
1347	#if EV_MULTIPLICITY	1741	#if EV_MULTIPLICITY
		1742
1348	struct ev_loop *	1743	struct ev_loop *
1349	ev_loop_new (unsigned int flags)	1744	ev_loop_new (unsigned int flags)
1350	{	1745	{
1351	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1746	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1352		1747
1353	memset (loop, 0, sizeof (struct ev_loop));	1748	memset (EV_A, 0, sizeof (struct ev_loop));
1354
1355	loop_init (EV_A_ flags);	1749	loop_init (EV_A_ flags);
1356		1750
1357	if (ev_backend (EV_A))	1751	if (ev_backend (EV_A))
1358	return loop;	1752	return EV_A;
1359		1753
1360	return 0;	1754	return 0;
1361	}	1755	}
1362		1756
1363	void	1757	void
…		…
1370	void	1764	void
1371	ev_loop_fork (EV_P)	1765	ev_loop_fork (EV_P)
1372	{	1766	{
1373	postfork = 1; /* must be in line with ev_default_fork */	1767	postfork = 1; /* must be in line with ev_default_fork */
1374	}	1768	}
		1769	#endif /* multiplicity */
1375		1770
		1771	#if EV_VERIFY
		1772	static void noinline
		1773	verify_watcher (EV_P_ W w)
		1774	{
		1775	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1776
		1777	if (w->pending)
		1778	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1779	}
		1780
		1781	static void noinline
		1782	verify_heap (EV_P_ ANHE *heap, int N)
		1783	{
		1784	int i;
		1785
		1786	for (i = HEAP0; i < N + HEAP0; ++i)
		1787	{
		1788	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1789	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1790	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1791
		1792	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1793	}
		1794	}
		1795
		1796	static void noinline
		1797	array_verify (EV_P_ W *ws, int cnt)
		1798	{
		1799	while (cnt--)
		1800	{
		1801	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1802	verify_watcher (EV_A_ ws [cnt]);
		1803	}
		1804	}
		1805	#endif
		1806
		1807	#if EV_MINIMAL < 2
		1808	void
		1809	ev_loop_verify (EV_P)
		1810	{
		1811	#if EV_VERIFY
		1812	int i;
		1813	WL w;
		1814
		1815	assert (activecnt >= -1);
		1816
		1817	assert (fdchangemax >= fdchangecnt);
		1818	for (i = 0; i < fdchangecnt; ++i)
		1819	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1820
		1821	assert (anfdmax >= 0);
		1822	for (i = 0; i < anfdmax; ++i)
		1823	for (w = anfds [i].head; w; w = w->next)
		1824	{
		1825	verify_watcher (EV_A_ (W)w);
		1826	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1827	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1828	}
		1829
		1830	assert (timermax >= timercnt);
		1831	verify_heap (EV_A_ timers, timercnt);
		1832
		1833	#if EV_PERIODIC_ENABLE
		1834	assert (periodicmax >= periodiccnt);
		1835	verify_heap (EV_A_ periodics, periodiccnt);
		1836	#endif
		1837
		1838	for (i = NUMPRI; i--; )
		1839	{
		1840	assert (pendingmax [i] >= pendingcnt [i]);
		1841	#if EV_IDLE_ENABLE
		1842	assert (idleall >= 0);
		1843	assert (idlemax [i] >= idlecnt [i]);
		1844	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1845	#endif
		1846	}
		1847
		1848	#if EV_FORK_ENABLE
		1849	assert (forkmax >= forkcnt);
		1850	array_verify (EV_A_ (W *)forks, forkcnt);
		1851	#endif
		1852
		1853	#if EV_ASYNC_ENABLE
		1854	assert (asyncmax >= asynccnt);
		1855	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1856	#endif
		1857
		1858	assert (preparemax >= preparecnt);
		1859	array_verify (EV_A_ (W *)prepares, preparecnt);
		1860
		1861	assert (checkmax >= checkcnt);
		1862	array_verify (EV_A_ (W *)checks, checkcnt);
		1863
		1864	# if 0
		1865	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1866	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		1867	# endif
		1868	#endif
		1869	}
1376	#endif	1870	#endif
1377		1871
1378	#if EV_MULTIPLICITY	1872	#if EV_MULTIPLICITY
1379	struct ev_loop *	1873	struct ev_loop *
1380	ev_default_loop_init (unsigned int flags)	1874	ev_default_loop_init (unsigned int flags)
…		…
1384	#endif	1878	#endif
1385	{	1879	{
1386	if (!ev_default_loop_ptr)	1880	if (!ev_default_loop_ptr)
1387	{	1881	{
1388	#if EV_MULTIPLICITY	1882	#if EV_MULTIPLICITY
1389	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1883	EV_P = ev_default_loop_ptr = &default_loop_struct;
1390	#else	1884	#else
1391	ev_default_loop_ptr = 1;	1885	ev_default_loop_ptr = 1;
1392	#endif	1886	#endif
1393		1887
1394	loop_init (EV_A_ flags);	1888	loop_init (EV_A_ flags);
…		…
1411		1905
1412	void	1906	void
1413	ev_default_destroy (void)	1907	ev_default_destroy (void)
1414	{	1908	{
1415	#if EV_MULTIPLICITY	1909	#if EV_MULTIPLICITY
1416	struct ev_loop *loop = ev_default_loop_ptr;	1910	EV_P = ev_default_loop_ptr;
1417	#endif	1911	#endif
		1912
		1913	ev_default_loop_ptr = 0;
1418		1914
1419	#ifndef _WIN32	1915	#ifndef _WIN32
1420	ev_ref (EV_A); /* child watcher */	1916	ev_ref (EV_A); /* child watcher */
1421	ev_signal_stop (EV_A_ &childev);	1917	ev_signal_stop (EV_A_ &childev);
1422	#endif	1918	#endif
…		…
1426		1922
1427	void	1923	void
1428	ev_default_fork (void)	1924	ev_default_fork (void)
1429	{	1925	{
1430	#if EV_MULTIPLICITY	1926	#if EV_MULTIPLICITY
1431	struct ev_loop *loop = ev_default_loop_ptr;	1927	EV_P = ev_default_loop_ptr;
1432	#endif	1928	#endif
1433		1929
1434	if (backend)
1435	postfork = 1; /* must be in line with ev_loop_fork */	1930	postfork = 1; /* must be in line with ev_loop_fork */
1436	}	1931	}
1437		1932
1438	/*****************************************************************************/	1933	/*****************************************************************************/
1439		1934
1440	void	1935	void
1441	ev_invoke (EV_P_ void *w, int revents)	1936	ev_invoke (EV_P_ void *w, int revents)
1442	{	1937	{
1443	EV_CB_INVOKE ((W)w, revents);	1938	EV_CB_INVOKE ((W)w, revents);
1444	}	1939	}
1445		1940
1446	void inline_speed	1941	unsigned int
1447	call_pending (EV_P)	1942	ev_pending_count (EV_P)
		1943	{
		1944	int pri;
		1945	unsigned int count = 0;
		1946
		1947	for (pri = NUMPRI; pri--; )
		1948	count += pendingcnt [pri];
		1949
		1950	return count;
		1951	}
		1952
		1953	void noinline
		1954	ev_invoke_pending (EV_P)
1448	{	1955	{
1449	int pri;	1956	int pri;
1450		1957
1451	for (pri = NUMPRI; pri--; )	1958	for (pri = NUMPRI; pri--; )
1452	while (pendingcnt [pri])	1959	while (pendingcnt [pri])
1453	{	1960	{
1454	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1961	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1455		1962
1456	if (expect_true (p->w))
1457	{
1458	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1963	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1964	/* ^ this is no longer true, as pending_w could be here */
1459		1965
1460	p->w->pending = 0;	1966	p->w->pending = 0;
1461	EV_CB_INVOKE (p->w, p->events);	1967	EV_CB_INVOKE (p->w, p->events);
1462	}	1968	EV_FREQUENT_CHECK;
1463	}	1969	}
1464	}	1970	}
1465		1971
1466	void inline_size
1467	timers_reify (EV_P)
1468	{
1469	while (timercnt && ev_at (timers [1]) <= mn_now)
1470	{
1471	ev_timer *w = (ev_timer *)timers [1];
1472
1473	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1474
1475	/* first reschedule or stop timer */
1476	if (w->repeat)
1477	{
1478	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1479
1480	ev_at (w) += w->repeat;
1481	if (ev_at (w) < mn_now)
1482	ev_at (w) = mn_now;
1483
1484	downheap (timers, timercnt, 1);
1485	}
1486	else
1487	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1488
1489	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1490	}
1491	}
1492
1493	#if EV_PERIODIC_ENABLE
1494	void inline_size
1495	periodics_reify (EV_P)
1496	{
1497	while (periodiccnt && ev_at (periodics [1]) <= ev_rt_now)
1498	{
1499	ev_periodic *w = (ev_periodic *)periodics [1];
1500
1501	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1502
1503	/* first reschedule or stop timer */
1504	if (w->reschedule_cb)
1505	{
1506	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1507	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
1508	downheap (periodics, periodiccnt, 1);
1509	}
1510	else if (w->interval)
1511	{
1512	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1513	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1514	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1515	downheap (periodics, periodiccnt, 1);
1516	}
1517	else
1518	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1519
1520	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1521	}
1522	}
1523
1524	static void noinline
1525	periodics_reschedule (EV_P)
1526	{
1527	int i;
1528
1529	/* adjust periodics after time jump */
1530	for (i = 1; i <= periodiccnt; ++i)
1531	{
1532	ev_periodic *w = (ev_periodic *)periodics [i];
1533
1534	if (w->reschedule_cb)
1535	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1536	else if (w->interval)
1537	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1538	}
1539
1540	/* now rebuild the heap */
1541	for (i = periodiccnt >> 1; i--; )
1542	downheap (periodics, periodiccnt, i);
1543	}
1544	#endif
1545
1546	#if EV_IDLE_ENABLE	1972	#if EV_IDLE_ENABLE
1547	void inline_size	1973	/* make idle watchers pending. this handles the "call-idle */
		1974	/* only when higher priorities are idle" logic */
		1975	inline_size void
1548	idle_reify (EV_P)	1976	idle_reify (EV_P)
1549	{	1977	{
1550	if (expect_false (idleall))	1978	if (expect_false (idleall))
1551	{	1979	{
1552	int pri;	1980	int pri;
…		…
1564	}	1992	}
1565	}	1993	}
1566	}	1994	}
1567	#endif	1995	#endif
1568		1996
1569	void inline_speed	1997	/* make timers pending */
		1998	inline_size void
		1999	timers_reify (EV_P)
		2000	{
		2001	EV_FREQUENT_CHECK;
		2002
		2003	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		2004	{
		2005	do
		2006	{
		2007	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2008
		2009	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2010
		2011	/* first reschedule or stop timer */
		2012	if (w->repeat)
		2013	{
		2014	ev_at (w) += w->repeat;
		2015	if (ev_at (w) < mn_now)
		2016	ev_at (w) = mn_now;
		2017
		2018	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		2019
		2020	ANHE_at_cache (timers [HEAP0]);
		2021	downheap (timers, timercnt, HEAP0);
		2022	}
		2023	else
		2024	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2025
		2026	EV_FREQUENT_CHECK;
		2027	feed_reverse (EV_A_ (W)w);
		2028	}
		2029	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
		2030
		2031	feed_reverse_done (EV_A_ EV_TIMEOUT);
		2032	}
		2033	}
		2034
		2035	#if EV_PERIODIC_ENABLE
		2036	/* make periodics pending */
		2037	inline_size void
		2038	periodics_reify (EV_P)
		2039	{
		2040	EV_FREQUENT_CHECK;
		2041
		2042	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		2043	{
		2044	int feed_count = 0;
		2045
		2046	do
		2047	{
		2048	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2049
		2050	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2051
		2052	/* first reschedule or stop timer */
		2053	if (w->reschedule_cb)
		2054	{
		2055	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2056
		2057	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		2058
		2059	ANHE_at_cache (periodics [HEAP0]);
		2060	downheap (periodics, periodiccnt, HEAP0);
		2061	}
		2062	else if (w->interval)
		2063	{
		2064	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2065	/* if next trigger time is not sufficiently in the future, put it there */
		2066	/* this might happen because of floating point inexactness */
		2067	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2068	{
		2069	ev_at (w) += w->interval;
		2070
		2071	/* if interval is unreasonably low we might still have a time in the past */
		2072	/* so correct this. this will make the periodic very inexact, but the user */
		2073	/* has effectively asked to get triggered more often than possible */
		2074	if (ev_at (w) < ev_rt_now)
		2075	ev_at (w) = ev_rt_now;
		2076	}
		2077
		2078	ANHE_at_cache (periodics [HEAP0]);
		2079	downheap (periodics, periodiccnt, HEAP0);
		2080	}
		2081	else
		2082	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2083
		2084	EV_FREQUENT_CHECK;
		2085	feed_reverse (EV_A_ (W)w);
		2086	}
		2087	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
		2088
		2089	feed_reverse_done (EV_A_ EV_PERIODIC);
		2090	}
		2091	}
		2092
		2093	/* simply recalculate all periodics */
		2094	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
		2095	static void noinline
		2096	periodics_reschedule (EV_P)
		2097	{
		2098	int i;
		2099
		2100	/* adjust periodics after time jump */
		2101	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		2102	{
		2103	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		2104
		2105	if (w->reschedule_cb)
		2106	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2107	else if (w->interval)
		2108	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2109
		2110	ANHE_at_cache (periodics [i]);
		2111	}
		2112
		2113	reheap (periodics, periodiccnt);
		2114	}
		2115	#endif
		2116
		2117	/* adjust all timers by a given offset */
		2118	static void noinline
		2119	timers_reschedule (EV_P_ ev_tstamp adjust)
		2120	{
		2121	int i;
		2122
		2123	for (i = 0; i < timercnt; ++i)
		2124	{
		2125	ANHE *he = timers + i + HEAP0;
		2126	ANHE_w (*he)->at += adjust;
		2127	ANHE_at_cache (*he);
		2128	}
		2129	}
		2130
		2131	/* fetch new monotonic and realtime times from the kernel */
		2132	/* also detetc if there was a timejump, and act accordingly */
		2133	inline_speed void
1570	time_update (EV_P_ ev_tstamp max_block)	2134	time_update (EV_P_ ev_tstamp max_block)
1571	{	2135	{
1572	int i;
1573
1574	#if EV_USE_MONOTONIC	2136	#if EV_USE_MONOTONIC
1575	if (expect_true (have_monotonic))	2137	if (expect_true (have_monotonic))
1576	{	2138	{
		2139	int i;
1577	ev_tstamp odiff = rtmn_diff;	2140	ev_tstamp odiff = rtmn_diff;
1578		2141
1579	mn_now = get_clock ();	2142	mn_now = get_clock ();
1580		2143
1581	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2144	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1599	*/	2162	*/
1600	for (i = 4; --i; )	2163	for (i = 4; --i; )
1601	{	2164	{
1602	rtmn_diff = ev_rt_now - mn_now;	2165	rtmn_diff = ev_rt_now - mn_now;
1603		2166
1604	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	2167	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1605	return; /* all is well */	2168	return; /* all is well */
1606		2169
1607	ev_rt_now = ev_time ();	2170	ev_rt_now = ev_time ();
1608	mn_now = get_clock ();	2171	mn_now = get_clock ();
1609	now_floor = mn_now;	2172	now_floor = mn_now;
1610	}	2173	}
1611		2174
		2175	/* no timer adjustment, as the monotonic clock doesn't jump */
		2176	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1612	# if EV_PERIODIC_ENABLE	2177	# if EV_PERIODIC_ENABLE
1613	periodics_reschedule (EV_A);	2178	periodics_reschedule (EV_A);
1614	# endif	2179	# endif
1615	/* no timer adjustment, as the monotonic clock doesn't jump */
1616	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1617	}	2180	}
1618	else	2181	else
1619	#endif	2182	#endif
1620	{	2183	{
1621	ev_rt_now = ev_time ();	2184	ev_rt_now = ev_time ();
1622		2185
1623	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2186	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1624	{	2187	{
		2188	/* adjust timers. this is easy, as the offset is the same for all of them */
		2189	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1625	#if EV_PERIODIC_ENABLE	2190	#if EV_PERIODIC_ENABLE
1626	periodics_reschedule (EV_A);	2191	periodics_reschedule (EV_A);
1627	#endif	2192	#endif
1628	/* adjust timers. this is easy, as the offset is the same for all of them */
1629	for (i = 1; i <= timercnt; ++i)
1630	ev_at (timers [i]) += ev_rt_now - mn_now;
1631	}	2193	}
1632		2194
1633	mn_now = ev_rt_now;	2195	mn_now = ev_rt_now;
1634	}	2196	}
1635	}	2197	}
1636		2198
1637	void	2199	void
1638	ev_ref (EV_P)
1639	{
1640	++activecnt;
1641	}
1642
1643	void
1644	ev_unref (EV_P)
1645	{
1646	--activecnt;
1647	}
1648
1649	static int loop_done;
1650
1651	void
1652	ev_loop (EV_P_ int flags)	2200	ev_loop (EV_P_ int flags)
1653	{	2201	{
		2202	#if EV_MINIMAL < 2
		2203	++loop_depth;
		2204	#endif
		2205
		2206	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2207
1654	loop_done = EVUNLOOP_CANCEL;	2208	loop_done = EVUNLOOP_CANCEL;
1655		2209
1656	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2210	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1657		2211
1658	do	2212	do
1659	{	2213	{
		2214	#if EV_VERIFY >= 2
		2215	ev_loop_verify (EV_A);
		2216	#endif
		2217
1660	#ifndef _WIN32	2218	#ifndef _WIN32
1661	if (expect_false (curpid)) /* penalise the forking check even more */	2219	if (expect_false (curpid)) /* penalise the forking check even more */
1662	if (expect_false (getpid () != curpid))	2220	if (expect_false (getpid () != curpid))
1663	{	2221	{
1664	curpid = getpid ();	2222	curpid = getpid ();
…		…
1670	/* we might have forked, so queue fork handlers */	2228	/* we might have forked, so queue fork handlers */
1671	if (expect_false (postfork))	2229	if (expect_false (postfork))
1672	if (forkcnt)	2230	if (forkcnt)
1673	{	2231	{
1674	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2232	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1675	call_pending (EV_A);	2233	EV_INVOKE_PENDING;
1676	}	2234	}
1677	#endif	2235	#endif
1678		2236
1679	/* queue prepare watchers (and execute them) */	2237	/* queue prepare watchers (and execute them) */
1680	if (expect_false (preparecnt))	2238	if (expect_false (preparecnt))
1681	{	2239	{
1682	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2240	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1683	call_pending (EV_A);	2241	EV_INVOKE_PENDING;
1684	}	2242	}
1685		2243
1686	if (expect_false (!activecnt))	2244	if (expect_false (loop_done))
1687	break;	2245	break;
1688		2246
1689	/* we might have forked, so reify kernel state if necessary */	2247	/* we might have forked, so reify kernel state if necessary */
1690	if (expect_false (postfork))	2248	if (expect_false (postfork))
1691	loop_fork (EV_A);	2249	loop_fork (EV_A);
…		…
1698	ev_tstamp waittime = 0.;	2256	ev_tstamp waittime = 0.;
1699	ev_tstamp sleeptime = 0.;	2257	ev_tstamp sleeptime = 0.;
1700		2258
1701	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2259	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1702	{	2260	{
		2261	/* remember old timestamp for io_blocktime calculation */
		2262	ev_tstamp prev_mn_now = mn_now;
		2263
1703	/* update time to cancel out callback processing overhead */	2264	/* update time to cancel out callback processing overhead */
1704	time_update (EV_A_ 1e100);	2265	time_update (EV_A_ 1e100);
1705		2266
1706	waittime = MAX_BLOCKTIME;	2267	waittime = MAX_BLOCKTIME;
1707		2268
1708	if (timercnt)	2269	if (timercnt)
1709	{	2270	{
1710	ev_tstamp to = ev_at (timers [1]) - mn_now + backend_fudge;	2271	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1711	if (waittime > to) waittime = to;	2272	if (waittime > to) waittime = to;
1712	}	2273	}
1713		2274
1714	#if EV_PERIODIC_ENABLE	2275	#if EV_PERIODIC_ENABLE
1715	if (periodiccnt)	2276	if (periodiccnt)
1716	{	2277	{
1717	ev_tstamp to = ev_at (periodics [1]) - ev_rt_now + backend_fudge;	2278	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1718	if (waittime > to) waittime = to;	2279	if (waittime > to) waittime = to;
1719	}	2280	}
1720	#endif	2281	#endif
1721		2282
		2283	/* don't let timeouts decrease the waittime below timeout_blocktime */
1722	if (expect_false (waittime < timeout_blocktime))	2284	if (expect_false (waittime < timeout_blocktime))
1723	waittime = timeout_blocktime;	2285	waittime = timeout_blocktime;
1724		2286
1725	sleeptime = waittime - backend_fudge;	2287	/* extra check because io_blocktime is commonly 0 */
1726
1727	if (expect_true (sleeptime > io_blocktime))	2288	if (expect_false (io_blocktime))
1728	sleeptime = io_blocktime;
1729
1730	if (sleeptime)
1731	{	2289	{
		2290	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2291
		2292	if (sleeptime > waittime - backend_fudge)
		2293	sleeptime = waittime - backend_fudge;
		2294
		2295	if (expect_true (sleeptime > 0.))
		2296	{
1732	ev_sleep (sleeptime);	2297	ev_sleep (sleeptime);
1733	waittime -= sleeptime;	2298	waittime -= sleeptime;
		2299	}
1734	}	2300	}
1735	}	2301	}
1736		2302
		2303	#if EV_MINIMAL < 2
1737	++loop_count;	2304	++loop_count;
		2305	#endif
		2306	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1738	backend_poll (EV_A_ waittime);	2307	backend_poll (EV_A_ waittime);
		2308	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1739		2309
1740	/* update ev_rt_now, do magic */	2310	/* update ev_rt_now, do magic */
1741	time_update (EV_A_ waittime + sleeptime);	2311	time_update (EV_A_ waittime + sleeptime);
1742	}	2312	}
1743		2313
…		…
1754		2324
1755	/* queue check watchers, to be executed first */	2325	/* queue check watchers, to be executed first */
1756	if (expect_false (checkcnt))	2326	if (expect_false (checkcnt))
1757	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2327	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1758		2328
1759	call_pending (EV_A);	2329	EV_INVOKE_PENDING;
1760	}	2330	}
1761	while (expect_true (	2331	while (expect_true (
1762	activecnt	2332	activecnt
1763	&& !loop_done	2333	&& !loop_done
1764	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2334	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1765	));	2335	));
1766		2336
1767	if (loop_done == EVUNLOOP_ONE)	2337	if (loop_done == EVUNLOOP_ONE)
1768	loop_done = EVUNLOOP_CANCEL;	2338	loop_done = EVUNLOOP_CANCEL;
		2339
		2340	#if EV_MINIMAL < 2
		2341	--loop_depth;
		2342	#endif
1769	}	2343	}
1770		2344
1771	void	2345	void
1772	ev_unloop (EV_P_ int how)	2346	ev_unloop (EV_P_ int how)
1773	{	2347	{
1774	loop_done = how;	2348	loop_done = how;
1775	}	2349	}
1776		2350
		2351	void
		2352	ev_ref (EV_P)
		2353	{
		2354	++activecnt;
		2355	}
		2356
		2357	void
		2358	ev_unref (EV_P)
		2359	{
		2360	--activecnt;
		2361	}
		2362
		2363	void
		2364	ev_now_update (EV_P)
		2365	{
		2366	time_update (EV_A_ 1e100);
		2367	}
		2368
		2369	void
		2370	ev_suspend (EV_P)
		2371	{
		2372	ev_now_update (EV_A);
		2373	}
		2374
		2375	void
		2376	ev_resume (EV_P)
		2377	{
		2378	ev_tstamp mn_prev = mn_now;
		2379
		2380	ev_now_update (EV_A);
		2381	timers_reschedule (EV_A_ mn_now - mn_prev);
		2382	#if EV_PERIODIC_ENABLE
		2383	/* TODO: really do this? */
		2384	periodics_reschedule (EV_A);
		2385	#endif
		2386	}
		2387
1777	/*****************************************************************************/	2388	/*****************************************************************************/
		2389	/* singly-linked list management, used when the expected list length is short */
1778		2390
1779	void inline_size	2391	inline_size void
1780	wlist_add (WL *head, WL elem)	2392	wlist_add (WL *head, WL elem)
1781	{	2393	{
1782	elem->next = *head;	2394	elem->next = *head;
1783	*head = elem;	2395	*head = elem;
1784	}	2396	}
1785		2397
1786	void inline_size	2398	inline_size void
1787	wlist_del (WL *head, WL elem)	2399	wlist_del (WL *head, WL elem)
1788	{	2400	{
1789	while (*head)	2401	while (*head)
1790	{	2402	{
1791	if (*head == elem)	2403	if (expect_true (*head == elem))
1792	{	2404	{
1793	*head = elem->next;	2405	*head = elem->next;
1794	return;	2406	break;
1795	}	2407	}
1796		2408
1797	head = &(*head)->next;	2409	head = &(*head)->next;
1798	}	2410	}
1799	}	2411	}
1800		2412
1801	void inline_speed	2413	/* internal, faster, version of ev_clear_pending */
		2414	inline_speed void
1802	clear_pending (EV_P_ W w)	2415	clear_pending (EV_P_ W w)
1803	{	2416	{
1804	if (w->pending)	2417	if (w->pending)
1805	{	2418	{
1806	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2419	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1807	w->pending = 0;	2420	w->pending = 0;
1808	}	2421	}
1809	}	2422	}
1810		2423
1811	int	2424	int
…		…
1815	int pending = w_->pending;	2428	int pending = w_->pending;
1816		2429
1817	if (expect_true (pending))	2430	if (expect_true (pending))
1818	{	2431	{
1819	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2432	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2433	p->w = (W)&pending_w;
1820	w_->pending = 0;	2434	w_->pending = 0;
1821	p->w = 0;
1822	return p->events;	2435	return p->events;
1823	}	2436	}
1824	else	2437	else
1825	return 0;	2438	return 0;
1826	}	2439	}
1827		2440
1828	void inline_size	2441	inline_size void
1829	pri_adjust (EV_P_ W w)	2442	pri_adjust (EV_P_ W w)
1830	{	2443	{
1831	int pri = w->priority;	2444	int pri = ev_priority (w);
1832	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2445	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1833	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2446	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1834	w->priority = pri;	2447	ev_set_priority (w, pri);
1835	}	2448	}
1836		2449
1837	void inline_speed	2450	inline_speed void
1838	ev_start (EV_P_ W w, int active)	2451	ev_start (EV_P_ W w, int active)
1839	{	2452	{
1840	pri_adjust (EV_A_ w);	2453	pri_adjust (EV_A_ w);
1841	w->active = active;	2454	w->active = active;
1842	ev_ref (EV_A);	2455	ev_ref (EV_A);
1843	}	2456	}
1844		2457
1845	void inline_size	2458	inline_size void
1846	ev_stop (EV_P_ W w)	2459	ev_stop (EV_P_ W w)
1847	{	2460	{
1848	ev_unref (EV_A);	2461	ev_unref (EV_A);
1849	w->active = 0;	2462	w->active = 0;
1850	}	2463	}
…		…
1857	int fd = w->fd;	2470	int fd = w->fd;
1858		2471
1859	if (expect_false (ev_is_active (w)))	2472	if (expect_false (ev_is_active (w)))
1860	return;	2473	return;
1861		2474
1862	assert (("ev_io_start called with negative fd", fd >= 0));	2475	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2476	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2477
		2478	EV_FREQUENT_CHECK;
1863		2479
1864	ev_start (EV_A_ (W)w, 1);	2480	ev_start (EV_A_ (W)w, 1);
1865	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2481	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1866	wlist_add (&anfds[fd].head, (WL)w);	2482	wlist_add (&anfds[fd].head, (WL)w);
1867		2483
1868	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2484	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1869	w->events &= ~EV_IOFDSET;	2485	w->events &= ~EV__IOFDSET;
		2486
		2487	EV_FREQUENT_CHECK;
1870	}	2488	}
1871		2489
1872	void noinline	2490	void noinline
1873	ev_io_stop (EV_P_ ev_io *w)	2491	ev_io_stop (EV_P_ ev_io *w)
1874	{	2492	{
1875	clear_pending (EV_A_ (W)w);	2493	clear_pending (EV_A_ (W)w);
1876	if (expect_false (!ev_is_active (w)))	2494	if (expect_false (!ev_is_active (w)))
1877	return;	2495	return;
1878		2496
1879	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2497	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2498
		2499	EV_FREQUENT_CHECK;
1880		2500
1881	wlist_del (&anfds[w->fd].head, (WL)w);	2501	wlist_del (&anfds[w->fd].head, (WL)w);
1882	ev_stop (EV_A_ (W)w);	2502	ev_stop (EV_A_ (W)w);
1883		2503
1884	fd_change (EV_A_ w->fd, 1);	2504	fd_change (EV_A_ w->fd, 1);
		2505
		2506	EV_FREQUENT_CHECK;
1885	}	2507	}
1886		2508
1887	void noinline	2509	void noinline
1888	ev_timer_start (EV_P_ ev_timer *w)	2510	ev_timer_start (EV_P_ ev_timer *w)
1889	{	2511	{
1890	if (expect_false (ev_is_active (w)))	2512	if (expect_false (ev_is_active (w)))
1891	return;	2513	return;
1892		2514
1893	ev_at (w) += mn_now;	2515	ev_at (w) += mn_now;
1894		2516
1895	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2517	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1896		2518
		2519	EV_FREQUENT_CHECK;
		2520
		2521	++timercnt;
1897	ev_start (EV_A_ (W)w, ++timercnt);	2522	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1898	array_needsize (WT, timers, timermax, timercnt + 1, EMPTY2);	2523	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1899	timers [timercnt] = (WT)w;	2524	ANHE_w (timers [ev_active (w)]) = (WT)w;
		2525	ANHE_at_cache (timers [ev_active (w)]);
1900	upheap (timers, timercnt);	2526	upheap (timers, ev_active (w));
1901		2527
		2528	EV_FREQUENT_CHECK;
		2529
1902	/*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/	2530	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1903	}	2531	}
1904		2532
1905	void noinline	2533	void noinline
1906	ev_timer_stop (EV_P_ ev_timer *w)	2534	ev_timer_stop (EV_P_ ev_timer *w)
1907	{	2535	{
1908	clear_pending (EV_A_ (W)w);	2536	clear_pending (EV_A_ (W)w);
1909	if (expect_false (!ev_is_active (w)))	2537	if (expect_false (!ev_is_active (w)))
1910	return;	2538	return;
1911		2539
		2540	EV_FREQUENT_CHECK;
		2541
1912	{	2542	{
1913	int active = ev_active (w);	2543	int active = ev_active (w);
1914		2544
1915	assert (("internal timer heap corruption", timers [active] == (WT)w));	2545	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1916		2546
		2547	--timercnt;
		2548
1917	if (expect_true (active < timercnt))	2549	if (expect_true (active < timercnt + HEAP0))
1918	{	2550	{
1919	timers [active] = timers [timercnt];	2551	timers [active] = timers [timercnt + HEAP0];
1920	adjustheap (timers, timercnt, active);	2552	adjustheap (timers, timercnt, active);
1921	}	2553	}
1922
1923	--timercnt;
1924	}	2554	}
		2555
		2556	EV_FREQUENT_CHECK;
1925		2557
1926	ev_at (w) -= mn_now;	2558	ev_at (w) -= mn_now;
1927		2559
1928	ev_stop (EV_A_ (W)w);	2560	ev_stop (EV_A_ (W)w);
1929	}	2561	}
1930		2562
1931	void noinline	2563	void noinline
1932	ev_timer_again (EV_P_ ev_timer *w)	2564	ev_timer_again (EV_P_ ev_timer *w)
1933	{	2565	{
		2566	EV_FREQUENT_CHECK;
		2567
1934	if (ev_is_active (w))	2568	if (ev_is_active (w))
1935	{	2569	{
1936	if (w->repeat)	2570	if (w->repeat)
1937	{	2571	{
1938	ev_at (w) = mn_now + w->repeat;	2572	ev_at (w) = mn_now + w->repeat;
		2573	ANHE_at_cache (timers [ev_active (w)]);
1939	adjustheap (timers, timercnt, ev_active (w));	2574	adjustheap (timers, timercnt, ev_active (w));
1940	}	2575	}
1941	else	2576	else
1942	ev_timer_stop (EV_A_ w);	2577	ev_timer_stop (EV_A_ w);
1943	}	2578	}
1944	else if (w->repeat)	2579	else if (w->repeat)
1945	{	2580	{
1946	ev_at (w) = w->repeat;	2581	ev_at (w) = w->repeat;
1947	ev_timer_start (EV_A_ w);	2582	ev_timer_start (EV_A_ w);
1948	}	2583	}
		2584
		2585	EV_FREQUENT_CHECK;
		2586	}
		2587
		2588	ev_tstamp
		2589	ev_timer_remaining (EV_P_ ev_timer *w)
		2590	{
		2591	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1949	}	2592	}
1950		2593
1951	#if EV_PERIODIC_ENABLE	2594	#if EV_PERIODIC_ENABLE
1952	void noinline	2595	void noinline
1953	ev_periodic_start (EV_P_ ev_periodic *w)	2596	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
1957		2600
1958	if (w->reschedule_cb)	2601	if (w->reschedule_cb)
1959	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2602	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1960	else if (w->interval)	2603	else if (w->interval)
1961	{	2604	{
1962	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2605	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1963	/* this formula differs from the one in periodic_reify because we do not always round up */	2606	/* this formula differs from the one in periodic_reify because we do not always round up */
1964	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2607	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1965	}	2608	}
1966	else	2609	else
1967	ev_at (w) = w->offset;	2610	ev_at (w) = w->offset;
1968		2611
		2612	EV_FREQUENT_CHECK;
		2613
		2614	++periodiccnt;
1969	ev_start (EV_A_ (W)w, ++periodiccnt);	2615	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1970	array_needsize (WT, periodics, periodicmax, periodiccnt + 1, EMPTY2);	2616	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1971	periodics [periodiccnt] = (WT)w;	2617	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1972	upheap (periodics, periodiccnt);	2618	ANHE_at_cache (periodics [ev_active (w)]);
		2619	upheap (periodics, ev_active (w));
1973		2620
		2621	EV_FREQUENT_CHECK;
		2622
1974	/*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/	2623	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1975	}	2624	}
1976		2625
1977	void noinline	2626	void noinline
1978	ev_periodic_stop (EV_P_ ev_periodic *w)	2627	ev_periodic_stop (EV_P_ ev_periodic *w)
1979	{	2628	{
1980	clear_pending (EV_A_ (W)w);	2629	clear_pending (EV_A_ (W)w);
1981	if (expect_false (!ev_is_active (w)))	2630	if (expect_false (!ev_is_active (w)))
1982	return;	2631	return;
1983		2632
		2633	EV_FREQUENT_CHECK;
		2634
1984	{	2635	{
1985	int active = ev_active (w);	2636	int active = ev_active (w);
1986		2637
1987	assert (("internal periodic heap corruption", periodics [active] == (WT)w));	2638	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1988		2639
		2640	--periodiccnt;
		2641
1989	if (expect_true (active < periodiccnt))	2642	if (expect_true (active < periodiccnt + HEAP0))
1990	{	2643	{
1991	periodics [active] = periodics [periodiccnt];	2644	periodics [active] = periodics [periodiccnt + HEAP0];
1992	adjustheap (periodics, periodiccnt, active);	2645	adjustheap (periodics, periodiccnt, active);
1993	}	2646	}
1994
1995	--periodiccnt;
1996	}	2647	}
		2648
		2649	EV_FREQUENT_CHECK;
1997		2650
1998	ev_stop (EV_A_ (W)w);	2651	ev_stop (EV_A_ (W)w);
1999	}	2652	}
2000		2653
2001	void noinline	2654	void noinline
…		…
2012	#endif	2665	#endif
2013		2666
2014	void noinline	2667	void noinline
2015	ev_signal_start (EV_P_ ev_signal *w)	2668	ev_signal_start (EV_P_ ev_signal *w)
2016	{	2669	{
2017	#if EV_MULTIPLICITY
2018	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2019	#endif
2020	if (expect_false (ev_is_active (w)))	2670	if (expect_false (ev_is_active (w)))
2021	return;	2671	return;
2022		2672
2023	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2673	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2024		2674
2025	evpipe_init (EV_A);	2675	#if EV_MULTIPLICITY
		2676	assert (("libev: a signal must not be attached to two different loops",
		2677	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2026		2678
		2679	signals [w->signum - 1].loop = EV_A;
		2680	#endif
		2681
		2682	EV_FREQUENT_CHECK;
		2683
		2684	#if EV_USE_SIGNALFD
		2685	if (sigfd == -2)
2027	{	2686	{
2028	#ifndef _WIN32	2687	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2029	sigset_t full, prev;	2688	if (sigfd < 0 && errno == EINVAL)
2030	sigfillset (&full);	2689	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2031	sigprocmask (SIG_SETMASK, &full, &prev);
2032	#endif
2033		2690
2034	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2691	if (sigfd >= 0)
		2692	{
		2693	fd_intern (sigfd); /* doing it twice will not hurt */
2035		2694
2036	#ifndef _WIN32	2695	sigemptyset (&sigfd_set);
2037	sigprocmask (SIG_SETMASK, &prev, 0);	2696
2038	#endif	2697	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2698	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2699	ev_io_start (EV_A_ &sigfd_w);
		2700	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2701	}
2039	}	2702	}
		2703
		2704	if (sigfd >= 0)
		2705	{
		2706	/* TODO: check .head */
		2707	sigaddset (&sigfd_set, w->signum);
		2708	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2709
		2710	signalfd (sigfd, &sigfd_set, 0);
		2711	}
		2712	#endif
2040		2713
2041	ev_start (EV_A_ (W)w, 1);	2714	ev_start (EV_A_ (W)w, 1);
2042	wlist_add (&signals [w->signum - 1].head, (WL)w);	2715	wlist_add (&signals [w->signum - 1].head, (WL)w);
2043		2716
2044	if (!((WL)w)->next)	2717	if (!((WL)w)->next)
		2718	# if EV_USE_SIGNALFD
		2719	if (sigfd < 0) /*TODO*/
		2720	# endif
2045	{	2721	{
2046	#if _WIN32	2722	# if _WIN32
2047	signal (w->signum, ev_sighandler);	2723	signal (w->signum, ev_sighandler);
2048	#else	2724	# else
2049	struct sigaction sa;	2725	struct sigaction sa;
		2726
		2727	evpipe_init (EV_A);
		2728
2050	sa.sa_handler = ev_sighandler;	2729	sa.sa_handler = ev_sighandler;
2051	sigfillset (&sa.sa_mask);	2730	sigfillset (&sa.sa_mask);
2052	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2731	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2053	sigaction (w->signum, &sa, 0);	2732	sigaction (w->signum, &sa, 0);
		2733
		2734	sigemptyset (&sa.sa_mask);
		2735	sigaddset (&sa.sa_mask, w->signum);
		2736	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2054	#endif	2737	#endif
2055	}	2738	}
		2739
		2740	EV_FREQUENT_CHECK;
2056	}	2741	}
2057		2742
2058	void noinline	2743	void noinline
2059	ev_signal_stop (EV_P_ ev_signal *w)	2744	ev_signal_stop (EV_P_ ev_signal *w)
2060	{	2745	{
2061	clear_pending (EV_A_ (W)w);	2746	clear_pending (EV_A_ (W)w);
2062	if (expect_false (!ev_is_active (w)))	2747	if (expect_false (!ev_is_active (w)))
2063	return;	2748	return;
2064		2749
		2750	EV_FREQUENT_CHECK;
		2751
2065	wlist_del (&signals [w->signum - 1].head, (WL)w);	2752	wlist_del (&signals [w->signum - 1].head, (WL)w);
2066	ev_stop (EV_A_ (W)w);	2753	ev_stop (EV_A_ (W)w);
2067		2754
2068	if (!signals [w->signum - 1].head)	2755	if (!signals [w->signum - 1].head)
		2756	{
		2757	#if EV_MULTIPLICITY
		2758	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2759	#endif
		2760	#if EV_USE_SIGNALFD
		2761	if (sigfd >= 0)
		2762	{
		2763	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2764	sigdelset (&sigfd_set, w->signum);
		2765	signalfd (sigfd, &sigfd_set, 0);
		2766	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2767	/*TODO: maybe unblock signal? */
		2768	}
		2769	else
		2770	#endif
2069	signal (w->signum, SIG_DFL);	2771	signal (w->signum, SIG_DFL);
		2772	}
		2773
		2774	EV_FREQUENT_CHECK;
2070	}	2775	}
2071		2776
2072	void	2777	void
2073	ev_child_start (EV_P_ ev_child *w)	2778	ev_child_start (EV_P_ ev_child *w)
2074	{	2779	{
2075	#if EV_MULTIPLICITY	2780	#if EV_MULTIPLICITY
2076	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2781	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2077	#endif	2782	#endif
2078	if (expect_false (ev_is_active (w)))	2783	if (expect_false (ev_is_active (w)))
2079	return;	2784	return;
2080		2785
		2786	EV_FREQUENT_CHECK;
		2787
2081	ev_start (EV_A_ (W)w, 1);	2788	ev_start (EV_A_ (W)w, 1);
2082	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2789	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2790
		2791	EV_FREQUENT_CHECK;
2083	}	2792	}
2084		2793
2085	void	2794	void
2086	ev_child_stop (EV_P_ ev_child *w)	2795	ev_child_stop (EV_P_ ev_child *w)
2087	{	2796	{
2088	clear_pending (EV_A_ (W)w);	2797	clear_pending (EV_A_ (W)w);
2089	if (expect_false (!ev_is_active (w)))	2798	if (expect_false (!ev_is_active (w)))
2090	return;	2799	return;
2091		2800
		2801	EV_FREQUENT_CHECK;
		2802
2092	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2803	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2093	ev_stop (EV_A_ (W)w);	2804	ev_stop (EV_A_ (W)w);
		2805
		2806	EV_FREQUENT_CHECK;
2094	}	2807	}
2095		2808
2096	#if EV_STAT_ENABLE	2809	#if EV_STAT_ENABLE
2097		2810
2098	# ifdef _WIN32	2811	# ifdef _WIN32
2099	# undef lstat	2812	# undef lstat
2100	# define lstat(a,b) _stati64 (a,b)	2813	# define lstat(a,b) _stati64 (a,b)
2101	# endif	2814	# endif
2102		2815
2103	#define DEF_STAT_INTERVAL 5.0074891	2816	#define DEF_STAT_INTERVAL 5.0074891
		2817	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2104	#define MIN_STAT_INTERVAL 0.1074891	2818	#define MIN_STAT_INTERVAL 0.1074891
2105		2819
2106	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2820	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2107		2821
2108	#if EV_USE_INOTIFY	2822	#if EV_USE_INOTIFY
2109	# define EV_INOTIFY_BUFSIZE 8192	2823	# define EV_INOTIFY_BUFSIZE 8192
…		…
2113	{	2827	{
2114	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);	2828	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);
2115		2829
2116	if (w->wd < 0)	2830	if (w->wd < 0)
2117	{	2831	{
		2832	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2118	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2833	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2119		2834
2120	/* monitor some parent directory for speedup hints */	2835	/* monitor some parent directory for speedup hints */
		2836	/* note that exceeding the hardcoded path limit is not a correctness issue, */
		2837	/* but an efficiency issue only */
2121	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2838	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2122	{	2839	{
2123	char path [4096];	2840	char path [4096];
2124	strcpy (path, w->path);	2841	strcpy (path, w->path);
2125		2842
…		…
2128	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2845	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2129	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2846	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2130		2847
2131	char *pend = strrchr (path, '/');	2848	char *pend = strrchr (path, '/');
2132		2849
2133	if (!pend)	2850	if (!pend || pend == path)
2134	break; /* whoops, no '/', complain to your admin */	2851	break;
2135		2852
2136	*pend = 0;	2853	*pend = 0;
2137	w->wd = inotify_add_watch (fs_fd, path, mask);	2854	w->wd = inotify_add_watch (fs_fd, path, mask);
2138	}	2855	}
2139	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2856	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2140	}	2857	}
2141	}	2858	}
2142	else
2143	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2144		2859
2145	if (w->wd >= 0)	2860	if (w->wd >= 0)
		2861	{
2146	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2862	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2863
		2864	/* now local changes will be tracked by inotify, but remote changes won't */
		2865	/* unless the filesystem it known to be local, we therefore still poll */
		2866	/* also do poll on <2.6.25, but with normal frequency */
		2867	struct statfs sfs;
		2868
		2869	if (fs_2625 && !statfs (w->path, &sfs))
		2870	if (sfs.f_type == 0x1373 /* devfs */
		2871	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2872	|| sfs.f_type == 0x3153464a /* jfs */
		2873	|| sfs.f_type == 0x52654973 /* reiser3 */
		2874	|| sfs.f_type == 0x01021994 /* tempfs */
		2875	|| sfs.f_type == 0x58465342 /* xfs */)
		2876	return;
		2877
		2878	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2879	ev_timer_again (EV_A_ &w->timer);
		2880	}
2147	}	2881	}
2148		2882
2149	static void noinline	2883	static void noinline
2150	infy_del (EV_P_ ev_stat *w)	2884	infy_del (EV_P_ ev_stat *w)
2151	{	2885	{
…		…
2165		2899
2166	static void noinline	2900	static void noinline
2167	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2901	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2168	{	2902	{
2169	if (slot < 0)	2903	if (slot < 0)
2170	/* overflow, need to check for all hahs slots */	2904	/* overflow, need to check for all hash slots */
2171	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2905	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2172	infy_wd (EV_A_ slot, wd, ev);	2906	infy_wd (EV_A_ slot, wd, ev);
2173	else	2907	else
2174	{	2908	{
2175	WL w_;	2909	WL w_;
…		…
2181		2915
2182	if (w->wd == wd || wd == -1)	2916	if (w->wd == wd || wd == -1)
2183	{	2917	{
2184	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2918	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2185	{	2919	{
		2920	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2186	w->wd = -1;	2921	w->wd = -1;
2187	infy_add (EV_A_ w); /* re-add, no matter what */	2922	infy_add (EV_A_ w); /* re-add, no matter what */
2188	}	2923	}
2189		2924
2190	stat_timer_cb (EV_A_ &w->timer, 0);	2925	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2203		2938
2204	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2939	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2205	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2940	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2206	}	2941	}
2207		2942
2208	void inline_size	2943	inline_size void
		2944	check_2625 (EV_P)
		2945	{
		2946	/* kernels < 2.6.25 are borked
		2947	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2948	*/
		2949	struct utsname buf;
		2950	int major, minor, micro;
		2951
		2952	if (uname (&buf))
		2953	return;
		2954
		2955	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2956	return;
		2957
		2958	if (major < 2
		2959	|| (major == 2 && minor < 6)
		2960	|| (major == 2 && minor == 6 && micro < 25))
		2961	return;
		2962
		2963	fs_2625 = 1;
		2964	}
		2965
		2966	inline_size void
2209	infy_init (EV_P)	2967	infy_init (EV_P)
2210	{	2968	{
2211	if (fs_fd != -2)	2969	if (fs_fd != -2)
2212	return;	2970	return;
		2971
		2972	fs_fd = -1;
		2973
		2974	check_2625 (EV_A);
2213		2975
2214	fs_fd = inotify_init ();	2976	fs_fd = inotify_init ();
2215		2977
2216	if (fs_fd >= 0)	2978	if (fs_fd >= 0)
2217	{	2979	{
…		…
2219	ev_set_priority (&fs_w, EV_MAXPRI);	2981	ev_set_priority (&fs_w, EV_MAXPRI);
2220	ev_io_start (EV_A_ &fs_w);	2982	ev_io_start (EV_A_ &fs_w);
2221	}	2983	}
2222	}	2984	}
2223		2985
2224	void inline_size	2986	inline_size void
2225	infy_fork (EV_P)	2987	infy_fork (EV_P)
2226	{	2988	{
2227	int slot;	2989	int slot;
2228		2990
2229	if (fs_fd < 0)	2991	if (fs_fd < 0)
…		…
2245	w->wd = -1;	3007	w->wd = -1;
2246		3008
2247	if (fs_fd >= 0)	3009	if (fs_fd >= 0)
2248	infy_add (EV_A_ w); /* re-add, no matter what */	3010	infy_add (EV_A_ w); /* re-add, no matter what */
2249	else	3011	else
2250	ev_timer_start (EV_A_ &w->timer);	3012	ev_timer_again (EV_A_ &w->timer);
2251	}	3013	}
2252
2253	}	3014	}
2254	}	3015	}
2255		3016
		3017	#endif
		3018
		3019	#ifdef _WIN32
		3020	# define EV_LSTAT(p,b) _stati64 (p, b)
		3021	#else
		3022	# define EV_LSTAT(p,b) lstat (p, b)
2256	#endif	3023	#endif
2257		3024
2258	void	3025	void
2259	ev_stat_stat (EV_P_ ev_stat *w)	3026	ev_stat_stat (EV_P_ ev_stat *w)
2260	{	3027	{
…		…
2287	|| w->prev.st_atime != w->attr.st_atime	3054	|| w->prev.st_atime != w->attr.st_atime
2288	|| w->prev.st_mtime != w->attr.st_mtime	3055	|| w->prev.st_mtime != w->attr.st_mtime
2289	|| w->prev.st_ctime != w->attr.st_ctime	3056	|| w->prev.st_ctime != w->attr.st_ctime
2290	) {	3057	) {
2291	#if EV_USE_INOTIFY	3058	#if EV_USE_INOTIFY
		3059	if (fs_fd >= 0)
		3060	{
2292	infy_del (EV_A_ w);	3061	infy_del (EV_A_ w);
2293	infy_add (EV_A_ w);	3062	infy_add (EV_A_ w);
2294	ev_stat_stat (EV_A_ w); /* avoid race... */	3063	ev_stat_stat (EV_A_ w); /* avoid race... */
		3064	}
2295	#endif	3065	#endif
2296		3066
2297	ev_feed_event (EV_A_ w, EV_STAT);	3067	ev_feed_event (EV_A_ w, EV_STAT);
2298	}	3068	}
2299	}	3069	}
…		…
2302	ev_stat_start (EV_P_ ev_stat *w)	3072	ev_stat_start (EV_P_ ev_stat *w)
2303	{	3073	{
2304	if (expect_false (ev_is_active (w)))	3074	if (expect_false (ev_is_active (w)))
2305	return;	3075	return;
2306		3076
2307	/* since we use memcmp, we need to clear any padding data etc. */
2308	memset (&w->prev, 0, sizeof (ev_statdata));
2309	memset (&w->attr, 0, sizeof (ev_statdata));
2310
2311	ev_stat_stat (EV_A_ w);	3077	ev_stat_stat (EV_A_ w);
2312		3078
		3079	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2313	if (w->interval < MIN_STAT_INTERVAL)	3080	w->interval = MIN_STAT_INTERVAL;
2314	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2315		3081
2316	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3082	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2317	ev_set_priority (&w->timer, ev_priority (w));	3083	ev_set_priority (&w->timer, ev_priority (w));
2318		3084
2319	#if EV_USE_INOTIFY	3085	#if EV_USE_INOTIFY
2320	infy_init (EV_A);	3086	infy_init (EV_A);
2321		3087
2322	if (fs_fd >= 0)	3088	if (fs_fd >= 0)
2323	infy_add (EV_A_ w);	3089	infy_add (EV_A_ w);
2324	else	3090	else
2325	#endif	3091	#endif
2326	ev_timer_start (EV_A_ &w->timer);	3092	ev_timer_again (EV_A_ &w->timer);
2327		3093
2328	ev_start (EV_A_ (W)w, 1);	3094	ev_start (EV_A_ (W)w, 1);
		3095
		3096	EV_FREQUENT_CHECK;
2329	}	3097	}
2330		3098
2331	void	3099	void
2332	ev_stat_stop (EV_P_ ev_stat *w)	3100	ev_stat_stop (EV_P_ ev_stat *w)
2333	{	3101	{
2334	clear_pending (EV_A_ (W)w);	3102	clear_pending (EV_A_ (W)w);
2335	if (expect_false (!ev_is_active (w)))	3103	if (expect_false (!ev_is_active (w)))
2336	return;	3104	return;
2337		3105
		3106	EV_FREQUENT_CHECK;
		3107
2338	#if EV_USE_INOTIFY	3108	#if EV_USE_INOTIFY
2339	infy_del (EV_A_ w);	3109	infy_del (EV_A_ w);
2340	#endif	3110	#endif
2341	ev_timer_stop (EV_A_ &w->timer);	3111	ev_timer_stop (EV_A_ &w->timer);
2342		3112
2343	ev_stop (EV_A_ (W)w);	3113	ev_stop (EV_A_ (W)w);
		3114
		3115	EV_FREQUENT_CHECK;
2344	}	3116	}
2345	#endif	3117	#endif
2346		3118
2347	#if EV_IDLE_ENABLE	3119	#if EV_IDLE_ENABLE
2348	void	3120	void
…		…
2350	{	3122	{
2351	if (expect_false (ev_is_active (w)))	3123	if (expect_false (ev_is_active (w)))
2352	return;	3124	return;
2353		3125
2354	pri_adjust (EV_A_ (W)w);	3126	pri_adjust (EV_A_ (W)w);
		3127
		3128	EV_FREQUENT_CHECK;
2355		3129
2356	{	3130	{
2357	int active = ++idlecnt [ABSPRI (w)];	3131	int active = ++idlecnt [ABSPRI (w)];
2358		3132
2359	++idleall;	3133	++idleall;
2360	ev_start (EV_A_ (W)w, active);	3134	ev_start (EV_A_ (W)w, active);
2361		3135
2362	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	3136	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2363	idles [ABSPRI (w)][active - 1] = w;	3137	idles [ABSPRI (w)][active - 1] = w;
2364	}	3138	}
		3139
		3140	EV_FREQUENT_CHECK;
2365	}	3141	}
2366		3142
2367	void	3143	void
2368	ev_idle_stop (EV_P_ ev_idle *w)	3144	ev_idle_stop (EV_P_ ev_idle *w)
2369	{	3145	{
2370	clear_pending (EV_A_ (W)w);	3146	clear_pending (EV_A_ (W)w);
2371	if (expect_false (!ev_is_active (w)))	3147	if (expect_false (!ev_is_active (w)))
2372	return;	3148	return;
2373		3149
		3150	EV_FREQUENT_CHECK;
		3151
2374	{	3152	{
2375	int active = ev_active (w);	3153	int active = ev_active (w);
2376		3154
2377	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3155	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2378	ev_active (idles [ABSPRI (w)][active - 1]) = active;	3156	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2379		3157
2380	ev_stop (EV_A_ (W)w);	3158	ev_stop (EV_A_ (W)w);
2381	--idleall;	3159	--idleall;
2382	}	3160	}
		3161
		3162	EV_FREQUENT_CHECK;
2383	}	3163	}
2384	#endif	3164	#endif
2385		3165
2386	void	3166	void
2387	ev_prepare_start (EV_P_ ev_prepare *w)	3167	ev_prepare_start (EV_P_ ev_prepare *w)
2388	{	3168	{
2389	if (expect_false (ev_is_active (w)))	3169	if (expect_false (ev_is_active (w)))
2390	return;	3170	return;
		3171
		3172	EV_FREQUENT_CHECK;
2391		3173
2392	ev_start (EV_A_ (W)w, ++preparecnt);	3174	ev_start (EV_A_ (W)w, ++preparecnt);
2393	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3175	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2394	prepares [preparecnt - 1] = w;	3176	prepares [preparecnt - 1] = w;
		3177
		3178	EV_FREQUENT_CHECK;
2395	}	3179	}
2396		3180
2397	void	3181	void
2398	ev_prepare_stop (EV_P_ ev_prepare *w)	3182	ev_prepare_stop (EV_P_ ev_prepare *w)
2399	{	3183	{
2400	clear_pending (EV_A_ (W)w);	3184	clear_pending (EV_A_ (W)w);
2401	if (expect_false (!ev_is_active (w)))	3185	if (expect_false (!ev_is_active (w)))
2402	return;	3186	return;
2403		3187
		3188	EV_FREQUENT_CHECK;
		3189
2404	{	3190	{
2405	int active = ev_active (w);	3191	int active = ev_active (w);
2406		3192
2407	prepares [active - 1] = prepares [--preparecnt];	3193	prepares [active - 1] = prepares [--preparecnt];
2408	ev_active (prepares [active - 1]) = active;	3194	ev_active (prepares [active - 1]) = active;
2409	}	3195	}
2410		3196
2411	ev_stop (EV_A_ (W)w);	3197	ev_stop (EV_A_ (W)w);
		3198
		3199	EV_FREQUENT_CHECK;
2412	}	3200	}
2413		3201
2414	void	3202	void
2415	ev_check_start (EV_P_ ev_check *w)	3203	ev_check_start (EV_P_ ev_check *w)
2416	{	3204	{
2417	if (expect_false (ev_is_active (w)))	3205	if (expect_false (ev_is_active (w)))
2418	return;	3206	return;
		3207
		3208	EV_FREQUENT_CHECK;
2419		3209
2420	ev_start (EV_A_ (W)w, ++checkcnt);	3210	ev_start (EV_A_ (W)w, ++checkcnt);
2421	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3211	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2422	checks [checkcnt - 1] = w;	3212	checks [checkcnt - 1] = w;
		3213
		3214	EV_FREQUENT_CHECK;
2423	}	3215	}
2424		3216
2425	void	3217	void
2426	ev_check_stop (EV_P_ ev_check *w)	3218	ev_check_stop (EV_P_ ev_check *w)
2427	{	3219	{
2428	clear_pending (EV_A_ (W)w);	3220	clear_pending (EV_A_ (W)w);
2429	if (expect_false (!ev_is_active (w)))	3221	if (expect_false (!ev_is_active (w)))
2430	return;	3222	return;
2431		3223
		3224	EV_FREQUENT_CHECK;
		3225
2432	{	3226	{
2433	int active = ev_active (w);	3227	int active = ev_active (w);
2434		3228
2435	checks [active - 1] = checks [--checkcnt];	3229	checks [active - 1] = checks [--checkcnt];
2436	ev_active (checks [active - 1]) = active;	3230	ev_active (checks [active - 1]) = active;
2437	}	3231	}
2438		3232
2439	ev_stop (EV_A_ (W)w);	3233	ev_stop (EV_A_ (W)w);
		3234
		3235	EV_FREQUENT_CHECK;
2440	}	3236	}
2441		3237
2442	#if EV_EMBED_ENABLE	3238	#if EV_EMBED_ENABLE
2443	void noinline	3239	void noinline
2444	ev_embed_sweep (EV_P_ ev_embed *w)	3240	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2461	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3257	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2462	{	3258	{
2463	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3259	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2464		3260
2465	{	3261	{
2466	struct ev_loop *loop = w->other;	3262	EV_P = w->other;
2467		3263
2468	while (fdchangecnt)	3264	while (fdchangecnt)
2469	{	3265	{
2470	fd_reify (EV_A);	3266	fd_reify (EV_A);
2471	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3267	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2472	}	3268	}
2473	}	3269	}
2474	}	3270	}
2475		3271
		3272	static void
		3273	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3274	{
		3275	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3276
		3277	ev_embed_stop (EV_A_ w);
		3278
		3279	{
		3280	EV_P = w->other;
		3281
		3282	ev_loop_fork (EV_A);
		3283	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3284	}
		3285
		3286	ev_embed_start (EV_A_ w);
		3287	}
		3288
2476	#if 0	3289	#if 0
2477	static void	3290	static void
2478	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3291	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2479	{	3292	{
2480	ev_idle_stop (EV_A_ idle);	3293	ev_idle_stop (EV_A_ idle);
…		…
2486	{	3299	{
2487	if (expect_false (ev_is_active (w)))	3300	if (expect_false (ev_is_active (w)))
2488	return;	3301	return;
2489		3302
2490	{	3303	{
2491	struct ev_loop *loop = w->other;	3304	EV_P = w->other;
2492	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3305	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2493	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3306	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2494	}	3307	}
		3308
		3309	EV_FREQUENT_CHECK;
2495		3310
2496	ev_set_priority (&w->io, ev_priority (w));	3311	ev_set_priority (&w->io, ev_priority (w));
2497	ev_io_start (EV_A_ &w->io);	3312	ev_io_start (EV_A_ &w->io);
2498		3313
2499	ev_prepare_init (&w->prepare, embed_prepare_cb);	3314	ev_prepare_init (&w->prepare, embed_prepare_cb);
2500	ev_set_priority (&w->prepare, EV_MINPRI);	3315	ev_set_priority (&w->prepare, EV_MINPRI);
2501	ev_prepare_start (EV_A_ &w->prepare);	3316	ev_prepare_start (EV_A_ &w->prepare);
2502		3317
		3318	ev_fork_init (&w->fork, embed_fork_cb);
		3319	ev_fork_start (EV_A_ &w->fork);
		3320
2503	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3321	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2504		3322
2505	ev_start (EV_A_ (W)w, 1);	3323	ev_start (EV_A_ (W)w, 1);
		3324
		3325	EV_FREQUENT_CHECK;
2506	}	3326	}
2507		3327
2508	void	3328	void
2509	ev_embed_stop (EV_P_ ev_embed *w)	3329	ev_embed_stop (EV_P_ ev_embed *w)
2510	{	3330	{
2511	clear_pending (EV_A_ (W)w);	3331	clear_pending (EV_A_ (W)w);
2512	if (expect_false (!ev_is_active (w)))	3332	if (expect_false (!ev_is_active (w)))
2513	return;	3333	return;
2514		3334
		3335	EV_FREQUENT_CHECK;
		3336
2515	ev_io_stop (EV_A_ &w->io);	3337	ev_io_stop (EV_A_ &w->io);
2516	ev_prepare_stop (EV_A_ &w->prepare);	3338	ev_prepare_stop (EV_A_ &w->prepare);
		3339	ev_fork_stop (EV_A_ &w->fork);
2517		3340
2518	ev_stop (EV_A_ (W)w);	3341	EV_FREQUENT_CHECK;
2519	}	3342	}
2520	#endif	3343	#endif
2521		3344
2522	#if EV_FORK_ENABLE	3345	#if EV_FORK_ENABLE
2523	void	3346	void
2524	ev_fork_start (EV_P_ ev_fork *w)	3347	ev_fork_start (EV_P_ ev_fork *w)
2525	{	3348	{
2526	if (expect_false (ev_is_active (w)))	3349	if (expect_false (ev_is_active (w)))
2527	return;	3350	return;
		3351
		3352	EV_FREQUENT_CHECK;
2528		3353
2529	ev_start (EV_A_ (W)w, ++forkcnt);	3354	ev_start (EV_A_ (W)w, ++forkcnt);
2530	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3355	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2531	forks [forkcnt - 1] = w;	3356	forks [forkcnt - 1] = w;
		3357
		3358	EV_FREQUENT_CHECK;
2532	}	3359	}
2533		3360
2534	void	3361	void
2535	ev_fork_stop (EV_P_ ev_fork *w)	3362	ev_fork_stop (EV_P_ ev_fork *w)
2536	{	3363	{
2537	clear_pending (EV_A_ (W)w);	3364	clear_pending (EV_A_ (W)w);
2538	if (expect_false (!ev_is_active (w)))	3365	if (expect_false (!ev_is_active (w)))
2539	return;	3366	return;
2540		3367
		3368	EV_FREQUENT_CHECK;
		3369
2541	{	3370	{
2542	int active = ev_active (w);	3371	int active = ev_active (w);
2543		3372
2544	forks [active - 1] = forks [--forkcnt];	3373	forks [active - 1] = forks [--forkcnt];
2545	ev_active (forks [active - 1]) = active;	3374	ev_active (forks [active - 1]) = active;
2546	}	3375	}
2547		3376
2548	ev_stop (EV_A_ (W)w);	3377	ev_stop (EV_A_ (W)w);
		3378
		3379	EV_FREQUENT_CHECK;
2549	}	3380	}
2550	#endif	3381	#endif
2551		3382
2552	#if EV_ASYNC_ENABLE	3383	#if EV_ASYNC_ENABLE
2553	void	3384	void
…		…
2555	{	3386	{
2556	if (expect_false (ev_is_active (w)))	3387	if (expect_false (ev_is_active (w)))
2557	return;	3388	return;
2558		3389
2559	evpipe_init (EV_A);	3390	evpipe_init (EV_A);
		3391
		3392	EV_FREQUENT_CHECK;
2560		3393
2561	ev_start (EV_A_ (W)w, ++asynccnt);	3394	ev_start (EV_A_ (W)w, ++asynccnt);
2562	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3395	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2563	asyncs [asynccnt - 1] = w;	3396	asyncs [asynccnt - 1] = w;
		3397
		3398	EV_FREQUENT_CHECK;
2564	}	3399	}
2565		3400
2566	void	3401	void
2567	ev_async_stop (EV_P_ ev_async *w)	3402	ev_async_stop (EV_P_ ev_async *w)
2568	{	3403	{
2569	clear_pending (EV_A_ (W)w);	3404	clear_pending (EV_A_ (W)w);
2570	if (expect_false (!ev_is_active (w)))	3405	if (expect_false (!ev_is_active (w)))
2571	return;	3406	return;
2572		3407
		3408	EV_FREQUENT_CHECK;
		3409
2573	{	3410	{
2574	int active = ev_active (w);	3411	int active = ev_active (w);
2575		3412
2576	asyncs [active - 1] = asyncs [--asynccnt];	3413	asyncs [active - 1] = asyncs [--asynccnt];
2577	ev_active (asyncs [active - 1]) = active;	3414	ev_active (asyncs [active - 1]) = active;
2578	}	3415	}
2579		3416
2580	ev_stop (EV_A_ (W)w);	3417	ev_stop (EV_A_ (W)w);
		3418
		3419	EV_FREQUENT_CHECK;
2581	}	3420	}
2582		3421
2583	void	3422	void
2584	ev_async_send (EV_P_ ev_async *w)	3423	ev_async_send (EV_P_ ev_async *w)
2585	{	3424	{
2586	w->sent = 1;	3425	w->sent = 1;
2587	evpipe_write (EV_A_ &gotasync);	3426	evpipe_write (EV_A_ &async_pending);
2588	}	3427	}
2589	#endif	3428	#endif
2590		3429
2591	/*****************************************************************************/	3430	/*****************************************************************************/
2592		3431
…		…
2602	once_cb (EV_P_ struct ev_once *once, int revents)	3441	once_cb (EV_P_ struct ev_once *once, int revents)
2603	{	3442	{
2604	void (*cb)(int revents, void *arg) = once->cb;	3443	void (*cb)(int revents, void *arg) = once->cb;
2605	void *arg = once->arg;	3444	void *arg = once->arg;
2606		3445
2607	ev_io_stop (EV_A_ &once->io);	3446	ev_io_stop (EV_A_ &once->io);
2608	ev_timer_stop (EV_A_ &once->to);	3447	ev_timer_stop (EV_A_ &once->to);
2609	ev_free (once);	3448	ev_free (once);
2610		3449
2611	cb (revents, arg);	3450	cb (revents, arg);
2612	}	3451	}
2613		3452
2614	static void	3453	static void
2615	once_cb_io (EV_P_ ev_io *w, int revents)	3454	once_cb_io (EV_P_ ev_io *w, int revents)
2616	{	3455	{
2617	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3456	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3457
		3458	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2618	}	3459	}
2619		3460
2620	static void	3461	static void
2621	once_cb_to (EV_P_ ev_timer *w, int revents)	3462	once_cb_to (EV_P_ ev_timer *w, int revents)
2622	{	3463	{
2623	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3464	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3465
		3466	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2624	}	3467	}
2625		3468
2626	void	3469	void
2627	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3470	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2628	{	3471	{
…		…
2650	ev_timer_set (&once->to, timeout, 0.);	3493	ev_timer_set (&once->to, timeout, 0.);
2651	ev_timer_start (EV_A_ &once->to);	3494	ev_timer_start (EV_A_ &once->to);
2652	}	3495	}
2653	}	3496	}
2654		3497
		3498	/*****************************************************************************/
		3499
		3500	#if EV_WALK_ENABLE
		3501	void
		3502	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3503	{
		3504	int i, j;
		3505	ev_watcher_list *wl, *wn;
		3506
		3507	if (types & (EV_IO | EV_EMBED))
		3508	for (i = 0; i < anfdmax; ++i)
		3509	for (wl = anfds [i].head; wl; )
		3510	{
		3511	wn = wl->next;
		3512
		3513	#if EV_EMBED_ENABLE
		3514	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3515	{
		3516	if (types & EV_EMBED)
		3517	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3518	}
		3519	else
		3520	#endif
		3521	#if EV_USE_INOTIFY
		3522	if (ev_cb ((ev_io *)wl) == infy_cb)
		3523	;
		3524	else
		3525	#endif
		3526	if ((ev_io *)wl != &pipe_w)
		3527	if (types & EV_IO)
		3528	cb (EV_A_ EV_IO, wl);
		3529
		3530	wl = wn;
		3531	}
		3532
		3533	if (types & (EV_TIMER | EV_STAT))
		3534	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3535	#if EV_STAT_ENABLE
		3536	/*TODO: timer is not always active*/
		3537	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3538	{
		3539	if (types & EV_STAT)
		3540	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3541	}
		3542	else
		3543	#endif
		3544	if (types & EV_TIMER)
		3545	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3546
		3547	#if EV_PERIODIC_ENABLE
		3548	if (types & EV_PERIODIC)
		3549	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3550	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3551	#endif
		3552
		3553	#if EV_IDLE_ENABLE
		3554	if (types & EV_IDLE)
		3555	for (j = NUMPRI; i--; )
		3556	for (i = idlecnt [j]; i--; )
		3557	cb (EV_A_ EV_IDLE, idles [j][i]);
		3558	#endif
		3559
		3560	#if EV_FORK_ENABLE
		3561	if (types & EV_FORK)
		3562	for (i = forkcnt; i--; )
		3563	if (ev_cb (forks [i]) != embed_fork_cb)
		3564	cb (EV_A_ EV_FORK, forks [i]);
		3565	#endif
		3566
		3567	#if EV_ASYNC_ENABLE
		3568	if (types & EV_ASYNC)
		3569	for (i = asynccnt; i--; )
		3570	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3571	#endif
		3572
		3573	if (types & EV_PREPARE)
		3574	for (i = preparecnt; i--; )
		3575	#if EV_EMBED_ENABLE
		3576	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3577	#endif
		3578	cb (EV_A_ EV_PREPARE, prepares [i]);
		3579
		3580	if (types & EV_CHECK)
		3581	for (i = checkcnt; i--; )
		3582	cb (EV_A_ EV_CHECK, checks [i]);
		3583
		3584	if (types & EV_SIGNAL)
		3585	for (i = 0; i < EV_NSIG - 1; ++i)
		3586	for (wl = signals [i].head; wl; )
		3587	{
		3588	wn = wl->next;
		3589	cb (EV_A_ EV_SIGNAL, wl);
		3590	wl = wn;
		3591	}
		3592
		3593	if (types & EV_CHILD)
		3594	for (i = EV_PID_HASHSIZE; i--; )
		3595	for (wl = childs [i]; wl; )
		3596	{
		3597	wn = wl->next;
		3598	cb (EV_A_ EV_CHILD, wl);
		3599	wl = wn;
		3600	}
		3601	/* EV_STAT 0x00001000 /* stat data changed */
		3602	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3603	}
		3604	#endif
		3605
2655	#if EV_MULTIPLICITY	3606	#if EV_MULTIPLICITY
2656	#include "ev_wrap.h"	3607	#include "ev_wrap.h"
2657	#endif	3608	#endif
2658		3609
2659	#ifdef __cplusplus	3610	#ifdef __cplusplus

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