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Comparing libev/ev.c (file contents):
Revision 1.228 by root, Fri May 2 08:07:37 2008 UTC vs.
Revision 1.312 by root, Wed Aug 12 18:48:17 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	# ifdef O_CLOEXEC
		392	# define EFD_CLOEXEC O_CLOEXEC
		393	# else
		394	# define EFD_CLOEXEC 02000000
		395	# endif
		396	# endif
274	# ifdef __cplusplus	397	# ifdef __cplusplus
275	extern "C" {	398	extern "C" {
276	# endif	399	# endif
277	int eventfd (unsigned int initval, int flags);	400	int eventfd (unsigned int initval, int flags);
278	# ifdef __cplusplus	401	# ifdef __cplusplus
279	}	402	}
280	# endif	403	# endif
281	#endif	404	#endif
282		405
		406	#if EV_USE_SIGNALFD
		407	# include <sys/signalfd.h>
		408	#endif
		409
283	/**/	410	/**/
		411
		412	#if EV_VERIFY >= 3
		413	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		414	#else
		415	# define EV_FREQUENT_CHECK do { } while (0)
		416	#endif
284		417
285	/*	418	/*
286	* This is used to avoid floating point rounding problems.	419	* This is used to avoid floating point rounding problems.
287	* It is added to ev_rt_now when scheduling periodics	420	* It is added to ev_rt_now when scheduling periodics
288	* to ensure progress, time-wise, even when rounding	421	* to ensure progress, time-wise, even when rounding
…		…
315	# define inline_speed static noinline	448	# define inline_speed static noinline
316	#else	449	#else
317	# define inline_speed static inline	450	# define inline_speed static inline
318	#endif	451	#endif
319		452
320	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	453	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		454
		455	#if EV_MINPRI == EV_MAXPRI
		456	# define ABSPRI(w) (((W)w), 0)
		457	#else
321	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	458	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		459	#endif
322		460
323	#define EMPTY /* required for microsofts broken pseudo-c compiler */	461	#define EMPTY /* required for microsofts broken pseudo-c compiler */
324	#define EMPTY2(a,b) /* used to suppress some warnings */	462	#define EMPTY2(a,b) /* used to suppress some warnings */
325		463
326	typedef ev_watcher *W;	464	typedef ev_watcher *W;
327	typedef ev_watcher_list *WL;	465	typedef ev_watcher_list *WL;
328	typedef ev_watcher_time *WT;	466	typedef ev_watcher_time *WT;
329		467
		468	#define ev_active(w) ((W)(w))->active
330	#define ev_at(w) ((WT)(w))->at	469	#define ev_at(w) ((WT)(w))->at
331		470
332	#if EV_USE_MONOTONIC	471	#if EV_USE_REALTIME
333	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	472	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
334	/* giving it a reasonably high chance of working on typical architetcures */	473	/* giving it a reasonably high chance of working on typical architetcures */
		474	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		475	#endif
		476
		477	#if EV_USE_MONOTONIC
335	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	478	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
336	#endif	479	#endif
337		480
338	#ifdef _WIN32	481	#ifdef _WIN32
339	# include "ev_win32.c"	482	# include "ev_win32.c"
…		…
348	{	491	{
349	syserr_cb = cb;	492	syserr_cb = cb;
350	}	493	}
351		494
352	static void noinline	495	static void noinline
353	syserr (const char *msg)	496	ev_syserr (const char *msg)
354	{	497	{
355	if (!msg)	498	if (!msg)
356	msg = "(libev) system error";	499	msg = "(libev) system error";
357		500
358	if (syserr_cb)	501	if (syserr_cb)
…		…
404	#define ev_malloc(size) ev_realloc (0, (size))	547	#define ev_malloc(size) ev_realloc (0, (size))
405	#define ev_free(ptr) ev_realloc ((ptr), 0)	548	#define ev_free(ptr) ev_realloc ((ptr), 0)
406		549
407	/*****************************************************************************/	550	/*****************************************************************************/
408		551
		552	/* set in reify when reification needed */
		553	#define EV_ANFD_REIFY 1
		554
		555	/* file descriptor info structure */
409	typedef struct	556	typedef struct
410	{	557	{
411	WL head;	558	WL head;
412	unsigned char events;	559	unsigned char events; /* the events watched for */
		560	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		561	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
413	unsigned char reify;	562	unsigned char unused;
		563	#if EV_USE_EPOLL
		564	unsigned int egen; /* generation counter to counter epoll bugs */
		565	#endif
414	#if EV_SELECT_IS_WINSOCKET	566	#if EV_SELECT_IS_WINSOCKET
415	SOCKET handle;	567	SOCKET handle;
416	#endif	568	#endif
417	} ANFD;	569	} ANFD;
418		570
		571	/* stores the pending event set for a given watcher */
419	typedef struct	572	typedef struct
420	{	573	{
421	W w;	574	W w;
422	int events;	575	int events; /* the pending event set for the given watcher */
423	} ANPENDING;	576	} ANPENDING;
424		577
425	#if EV_USE_INOTIFY	578	#if EV_USE_INOTIFY
		579	/* hash table entry per inotify-id */
426	typedef struct	580	typedef struct
427	{	581	{
428	WL head;	582	WL head;
429	} ANFS;	583	} ANFS;
		584	#endif
		585
		586	/* Heap Entry */
		587	#if EV_HEAP_CACHE_AT
		588	/* a heap element */
		589	typedef struct {
		590	ev_tstamp at;
		591	WT w;
		592	} ANHE;
		593
		594	#define ANHE_w(he) (he).w /* access watcher, read-write */
		595	#define ANHE_at(he) (he).at /* access cached at, read-only */
		596	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		597	#else
		598	/* a heap element */
		599	typedef WT ANHE;
		600
		601	#define ANHE_w(he) (he)
		602	#define ANHE_at(he) (he)->at
		603	#define ANHE_at_cache(he)
430	#endif	604	#endif
431		605
432	#if EV_MULTIPLICITY	606	#if EV_MULTIPLICITY
433		607
434	struct ev_loop	608	struct ev_loop
…		…
453		627
454	static int ev_default_loop_ptr;	628	static int ev_default_loop_ptr;
455		629
456	#endif	630	#endif
457		631
		632	#if EV_MINIMAL < 2
		633	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		634	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		635	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		636	#else
		637	# define EV_RELEASE_CB (void)0
		638	# define EV_ACQUIRE_CB (void)0
		639	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		640	#endif
		641
		642	#define EVUNLOOP_RECURSE 0x80
		643
458	/*****************************************************************************/	644	/*****************************************************************************/
459		645
		646	#ifndef EV_HAVE_EV_TIME
460	ev_tstamp	647	ev_tstamp
461	ev_time (void)	648	ev_time (void)
462	{	649	{
463	#if EV_USE_REALTIME	650	#if EV_USE_REALTIME
		651	if (expect_true (have_realtime))
		652	{
464	struct timespec ts;	653	struct timespec ts;
465	clock_gettime (CLOCK_REALTIME, &ts);	654	clock_gettime (CLOCK_REALTIME, &ts);
466	return ts.tv_sec + ts.tv_nsec * 1e-9;	655	return ts.tv_sec + ts.tv_nsec * 1e-9;
467	#else	656	}
		657	#endif
		658
468	struct timeval tv;	659	struct timeval tv;
469	gettimeofday (&tv, 0);	660	gettimeofday (&tv, 0);
470	return tv.tv_sec + tv.tv_usec * 1e-6;	661	return tv.tv_sec + tv.tv_usec * 1e-6;
471	#endif
472	}	662	}
		663	#endif
473		664
474	ev_tstamp inline_size	665	inline_size ev_tstamp
475	get_clock (void)	666	get_clock (void)
476	{	667	{
477	#if EV_USE_MONOTONIC	668	#if EV_USE_MONOTONIC
478	if (expect_true (have_monotonic))	669	if (expect_true (have_monotonic))
479	{	670	{
…		…
512	struct timeval tv;	703	struct timeval tv;
513		704
514	tv.tv_sec = (time_t)delay;	705	tv.tv_sec = (time_t)delay;
515	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	706	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
516		707
		708	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		709	/* something not guaranteed by newer posix versions, but guaranteed */
		710	/* by older ones */
517	select (0, 0, 0, 0, &tv);	711	select (0, 0, 0, 0, &tv);
518	#endif	712	#endif
519	}	713	}
520	}	714	}
521		715
522	/*****************************************************************************/	716	/*****************************************************************************/
523		717
524	int inline_size	718	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		719
		720	/* find a suitable new size for the given array, */
		721	/* hopefully by rounding to a ncie-to-malloc size */
		722	inline_size int
525	array_nextsize (int elem, int cur, int cnt)	723	array_nextsize (int elem, int cur, int cnt)
526	{	724	{
527	int ncur = cur + 1;	725	int ncur = cur + 1;
528		726
529	do	727	do
530	ncur <<= 1;	728	ncur <<= 1;
531	while (cnt > ncur);	729	while (cnt > ncur);
532		730
533	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	731	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
534	if (elem * ncur > 4096)	732	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
535	{	733	{
536	ncur *= elem;	734	ncur *= elem;
537	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	735	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
538	ncur = ncur - sizeof (void *) * 4;	736	ncur = ncur - sizeof (void *) * 4;
539	ncur /= elem;	737	ncur /= elem;
540	}	738	}
541		739
542	return ncur;	740	return ncur;
…		…
546	array_realloc (int elem, void *base, int *cur, int cnt)	744	array_realloc (int elem, void *base, int *cur, int cnt)
547	{	745	{
548	*cur = array_nextsize (elem, *cur, cnt);	746	*cur = array_nextsize (elem, *cur, cnt);
549	return ev_realloc (base, elem * *cur);	747	return ev_realloc (base, elem * *cur);
550	}	748	}
		749
		750	#define array_init_zero(base,count) \
		751	memset ((void *)(base), 0, sizeof (*(base)) * (count))
551		752
552	#define array_needsize(type,base,cur,cnt,init) \	753	#define array_needsize(type,base,cur,cnt,init) \
553	if (expect_false ((cnt) > (cur))) \	754	if (expect_false ((cnt) > (cur))) \
554	{ \	755	{ \
555	int ocur_ = (cur); \	756	int ocur_ = (cur); \
…		…
567	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	768	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
568	}	769	}
569	#endif	770	#endif
570		771
571	#define array_free(stem, idx) \	772	#define array_free(stem, idx) \
572	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	773	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
573		774
574	/*****************************************************************************/	775	/*****************************************************************************/
		776
		777	/* dummy callback for pending events */
		778	static void noinline
		779	pendingcb (EV_P_ ev_prepare *w, int revents)
		780	{
		781	}
575		782
576	void noinline	783	void noinline
577	ev_feed_event (EV_P_ void *w, int revents)	784	ev_feed_event (EV_P_ void *w, int revents)
578	{	785	{
579	W w_ = (W)w;	786	W w_ = (W)w;
…		…
588	pendings [pri][w_->pending - 1].w = w_;	795	pendings [pri][w_->pending - 1].w = w_;
589	pendings [pri][w_->pending - 1].events = revents;	796	pendings [pri][w_->pending - 1].events = revents;
590	}	797	}
591	}	798	}
592		799
593	void inline_speed	800	inline_speed void
		801	feed_reverse (EV_P_ W w)
		802	{
		803	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		804	rfeeds [rfeedcnt++] = w;
		805	}
		806
		807	inline_size void
		808	feed_reverse_done (EV_P_ int revents)
		809	{
		810	do
		811	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		812	while (rfeedcnt);
		813	}
		814
		815	inline_speed void
594	queue_events (EV_P_ W *events, int eventcnt, int type)	816	queue_events (EV_P_ W *events, int eventcnt, int type)
595	{	817	{
596	int i;	818	int i;
597		819
598	for (i = 0; i < eventcnt; ++i)	820	for (i = 0; i < eventcnt; ++i)
599	ev_feed_event (EV_A_ events [i], type);	821	ev_feed_event (EV_A_ events [i], type);
600	}	822	}
601		823
602	/*****************************************************************************/	824	/*****************************************************************************/
603		825
604	void inline_size	826	inline_speed void
605	anfds_init (ANFD *base, int count)
606	{
607	while (count--)
608	{
609	base->head = 0;
610	base->events = EV_NONE;
611	base->reify = 0;
612
613	++base;
614	}
615	}
616
617	void inline_speed
618	fd_event (EV_P_ int fd, int revents)	827	fd_event_nc (EV_P_ int fd, int revents)
619	{	828	{
620	ANFD *anfd = anfds + fd;	829	ANFD *anfd = anfds + fd;
621	ev_io *w;	830	ev_io *w;
622		831
623	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	832	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
627	if (ev)	836	if (ev)
628	ev_feed_event (EV_A_ (W)w, ev);	837	ev_feed_event (EV_A_ (W)w, ev);
629	}	838	}
630	}	839	}
631		840
		841	/* do not submit kernel events for fds that have reify set */
		842	/* because that means they changed while we were polling for new events */
		843	inline_speed void
		844	fd_event (EV_P_ int fd, int revents)
		845	{
		846	ANFD *anfd = anfds + fd;
		847
		848	if (expect_true (!anfd->reify))
		849	fd_event_nc (EV_A_ fd, revents);
		850	}
		851
632	void	852	void
633	ev_feed_fd_event (EV_P_ int fd, int revents)	853	ev_feed_fd_event (EV_P_ int fd, int revents)
634	{	854	{
635	if (fd >= 0 && fd < anfdmax)	855	if (fd >= 0 && fd < anfdmax)
636	fd_event (EV_A_ fd, revents);	856	fd_event_nc (EV_A_ fd, revents);
637	}	857	}
638		858
639	void inline_size	859	/* make sure the external fd watch events are in-sync */
		860	/* with the kernel/libev internal state */
		861	inline_size void
640	fd_reify (EV_P)	862	fd_reify (EV_P)
641	{	863	{
642	int i;	864	int i;
643		865
644	for (i = 0; i < fdchangecnt; ++i)	866	for (i = 0; i < fdchangecnt; ++i)
…		…
653	events |= (unsigned char)w->events;	875	events |= (unsigned char)w->events;
654		876
655	#if EV_SELECT_IS_WINSOCKET	877	#if EV_SELECT_IS_WINSOCKET
656	if (events)	878	if (events)
657	{	879	{
658	unsigned long argp;	880	unsigned long arg;
659	#ifdef EV_FD_TO_WIN32_HANDLE	881	#ifdef EV_FD_TO_WIN32_HANDLE
660	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	882	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
661	#else	883	#else
662	anfd->handle = _get_osfhandle (fd);	884	anfd->handle = _get_osfhandle (fd);
663	#endif	885	#endif
664	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	886	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
665	}	887	}
666	#endif	888	#endif
667		889
668	{	890	{
669	unsigned char o_events = anfd->events;	891	unsigned char o_events = anfd->events;
670	unsigned char o_reify = anfd->reify;	892	unsigned char o_reify = anfd->reify;
671		893
672	anfd->reify = 0;	894	anfd->reify = 0;
673	anfd->events = events;	895	anfd->events = events;
674		896
675	if (o_events != events || o_reify & EV_IOFDSET)	897	if (o_events != events || o_reify & EV__IOFDSET)
676	backend_modify (EV_A_ fd, o_events, events);	898	backend_modify (EV_A_ fd, o_events, events);
677	}	899	}
678	}	900	}
679		901
680	fdchangecnt = 0;	902	fdchangecnt = 0;
681	}	903	}
682		904
683	void inline_size	905	/* something about the given fd changed */
		906	inline_size void
684	fd_change (EV_P_ int fd, int flags)	907	fd_change (EV_P_ int fd, int flags)
685	{	908	{
686	unsigned char reify = anfds [fd].reify;	909	unsigned char reify = anfds [fd].reify;
687	anfds [fd].reify |= flags;	910	anfds [fd].reify |= flags;
688		911
…		…
692	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	915	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
693	fdchanges [fdchangecnt - 1] = fd;	916	fdchanges [fdchangecnt - 1] = fd;
694	}	917	}
695	}	918	}
696		919
697	void inline_speed	920	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		921	inline_speed void
698	fd_kill (EV_P_ int fd)	922	fd_kill (EV_P_ int fd)
699	{	923	{
700	ev_io *w;	924	ev_io *w;
701		925
702	while ((w = (ev_io *)anfds [fd].head))	926	while ((w = (ev_io *)anfds [fd].head))
…		…
704	ev_io_stop (EV_A_ w);	928	ev_io_stop (EV_A_ w);
705	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	929	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
706	}	930	}
707	}	931	}
708		932
709	int inline_size	933	/* check whether the given fd is atcually valid, for error recovery */
		934	inline_size int
710	fd_valid (int fd)	935	fd_valid (int fd)
711	{	936	{
712	#ifdef _WIN32	937	#ifdef _WIN32
713	return _get_osfhandle (fd) != -1;	938	return _get_osfhandle (fd) != -1;
714	#else	939	#else
…		…
722	{	947	{
723	int fd;	948	int fd;
724		949
725	for (fd = 0; fd < anfdmax; ++fd)	950	for (fd = 0; fd < anfdmax; ++fd)
726	if (anfds [fd].events)	951	if (anfds [fd].events)
727	if (!fd_valid (fd) == -1 && errno == EBADF)	952	if (!fd_valid (fd) && errno == EBADF)
728	fd_kill (EV_A_ fd);	953	fd_kill (EV_A_ fd);
729	}	954	}
730		955
731	/* called on ENOMEM in select/poll to kill some fds and retry */	956	/* called on ENOMEM in select/poll to kill some fds and retry */
732	static void noinline	957	static void noinline
…		…
736		961
737	for (fd = anfdmax; fd--; )	962	for (fd = anfdmax; fd--; )
738	if (anfds [fd].events)	963	if (anfds [fd].events)
739	{	964	{
740	fd_kill (EV_A_ fd);	965	fd_kill (EV_A_ fd);
741	return;	966	break;
742	}	967	}
743	}	968	}
744		969
745	/* usually called after fork if backend needs to re-arm all fds from scratch */	970	/* usually called after fork if backend needs to re-arm all fds from scratch */
746	static void noinline	971	static void noinline
…		…
750		975
751	for (fd = 0; fd < anfdmax; ++fd)	976	for (fd = 0; fd < anfdmax; ++fd)
752	if (anfds [fd].events)	977	if (anfds [fd].events)
753	{	978	{
754	anfds [fd].events = 0;	979	anfds [fd].events = 0;
		980	anfds [fd].emask = 0;
755	fd_change (EV_A_ fd, EV_IOFDSET | 1);	981	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
756	}	982	}
757	}	983	}
758		984
759	/*****************************************************************************/	985	/*****************************************************************************/
760		986
		987	/*
		988	* the heap functions want a real array index. array index 0 uis guaranteed to not
		989	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		990	* the branching factor of the d-tree.
		991	*/
		992
		993	/*
		994	* at the moment we allow libev the luxury of two heaps,
		995	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		996	* which is more cache-efficient.
		997	* the difference is about 5% with 50000+ watchers.
		998	*/
		999	#if EV_USE_4HEAP
		1000
		1001	#define DHEAP 4
		1002	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		1003	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		1004	#define UPHEAP_DONE(p,k) ((p) == (k))
		1005
		1006	/* away from the root */
		1007	inline_speed void
		1008	downheap (ANHE *heap, int N, int k)
		1009	{
		1010	ANHE he = heap [k];
		1011	ANHE *E = heap + N + HEAP0;
		1012
		1013	for (;;)
		1014	{
		1015	ev_tstamp minat;
		1016	ANHE *minpos;
		1017	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
		1018
		1019	/* find minimum child */
		1020	if (expect_true (pos + DHEAP - 1 < E))
		1021	{
		1022	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1023	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1024	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1025	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1026	}
		1027	else if (pos < E)
		1028	{
		1029	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1030	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1031	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1032	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1033	}
		1034	else
		1035	break;
		1036
		1037	if (ANHE_at (he) <= minat)
		1038	break;
		1039
		1040	heap [k] = *minpos;
		1041	ev_active (ANHE_w (*minpos)) = k;
		1042
		1043	k = minpos - heap;
		1044	}
		1045
		1046	heap [k] = he;
		1047	ev_active (ANHE_w (he)) = k;
		1048	}
		1049
		1050	#else /* 4HEAP */
		1051
		1052	#define HEAP0 1
		1053	#define HPARENT(k) ((k) >> 1)
		1054	#define UPHEAP_DONE(p,k) (!(p))
		1055
		1056	/* away from the root */
		1057	inline_speed void
		1058	downheap (ANHE *heap, int N, int k)
		1059	{
		1060	ANHE he = heap [k];
		1061
		1062	for (;;)
		1063	{
		1064	int c = k << 1;
		1065
		1066	if (c >= N + HEAP0)
		1067	break;
		1068
		1069	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		1070	? 1 : 0;
		1071
		1072	if (ANHE_at (he) <= ANHE_at (heap [c]))
		1073	break;
		1074
		1075	heap [k] = heap [c];
		1076	ev_active (ANHE_w (heap [k])) = k;
		1077
		1078	k = c;
		1079	}
		1080
		1081	heap [k] = he;
		1082	ev_active (ANHE_w (he)) = k;
		1083	}
		1084	#endif
		1085
761	/* towards the root */	1086	/* towards the root */
762	void inline_speed	1087	inline_speed void
763	upheap (WT *heap, int k)	1088	upheap (ANHE *heap, int k)
764	{	1089	{
765	WT w = heap [k];	1090	ANHE he = heap [k];
766		1091
767	for (;;)	1092	for (;;)
768	{	1093	{
769	int p = k >> 1;	1094	int p = HPARENT (k);
770		1095
771	/* maybe we could use a dummy element at heap [0]? */	1096	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
772	if (!p || heap [p]->at <= w->at)
773	break;	1097	break;
774		1098
775	heap [k] = heap [p];	1099	heap [k] = heap [p];
776	((W)heap [k])->active = k;	1100	ev_active (ANHE_w (heap [k])) = k;
777	k = p;	1101	k = p;
778	}	1102	}
779		1103
780	heap [k] = w;	1104	heap [k] = he;
781	((W)heap [k])->active = k;	1105	ev_active (ANHE_w (he)) = k;
782	}	1106	}
783		1107
784	/* away from the root */	1108	/* move an element suitably so it is in a correct place */
785	void inline_speed	1109	inline_size void
786	downheap (WT *heap, int N, int k)
787	{
788	WT w = heap [k];
789
790	for (;;)
791	{
792	int c = k << 1;
793
794	if (c > N)
795	break;
796
797	c += c < N && heap [c]->at > heap [c + 1]->at
798	? 1 : 0;
799
800	if (w->at <= heap [c]->at)
801	break;
802
803	heap [k] = heap [c];
804	((W)heap [k])->active = k;
805
806	k = c;
807	}
808
809	heap [k] = w;
810	((W)heap [k])->active = k;
811	}
812
813	void inline_size
814	adjustheap (WT *heap, int N, int k)	1110	adjustheap (ANHE *heap, int N, int k)
815	{	1111	{
		1112	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
816	upheap (heap, k);	1113	upheap (heap, k);
		1114	else
817	downheap (heap, N, k);	1115	downheap (heap, N, k);
		1116	}
		1117
		1118	/* rebuild the heap: this function is used only once and executed rarely */
		1119	inline_size void
		1120	reheap (ANHE *heap, int N)
		1121	{
		1122	int i;
		1123
		1124	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1125	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1126	for (i = 0; i < N; ++i)
		1127	upheap (heap, i + HEAP0);
818	}	1128	}
819		1129
820	/*****************************************************************************/	1130	/*****************************************************************************/
821		1131
		1132	/* associate signal watchers to a signal signal */
822	typedef struct	1133	typedef struct
823	{	1134	{
		1135	EV_ATOMIC_T pending;
		1136	#if EV_MULTIPLICITY
		1137	EV_P;
		1138	#endif
824	WL head;	1139	WL head;
825	EV_ATOMIC_T gotsig;
826	} ANSIG;	1140	} ANSIG;
827		1141
828	static ANSIG *signals;	1142	static ANSIG signals [EV_NSIG - 1];
829	static int signalmax;
830
831	static EV_ATOMIC_T gotsig;
832
833	void inline_size
834	signals_init (ANSIG *base, int count)
835	{
836	while (count--)
837	{
838	base->head = 0;
839	base->gotsig = 0;
840
841	++base;
842	}
843	}
844		1143
845	/*****************************************************************************/	1144	/*****************************************************************************/
846		1145
847	void inline_speed	1146	/* used to prepare libev internal fd's */
		1147	/* this is not fork-safe */
		1148	inline_speed void
848	fd_intern (int fd)	1149	fd_intern (int fd)
849	{	1150	{
850	#ifdef _WIN32	1151	#ifdef _WIN32
851	int arg = 1;	1152	unsigned long arg = 1;
852	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1153	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
853	#else	1154	#else
854	fcntl (fd, F_SETFD, FD_CLOEXEC);	1155	fcntl (fd, F_SETFD, FD_CLOEXEC);
855	fcntl (fd, F_SETFL, O_NONBLOCK);	1156	fcntl (fd, F_SETFL, O_NONBLOCK);
856	#endif	1157	#endif
857	}	1158	}
858		1159
859	static void noinline	1160	static void noinline
860	evpipe_init (EV_P)	1161	evpipe_init (EV_P)
861	{	1162	{
862	if (!ev_is_active (&pipeev))	1163	if (!ev_is_active (&pipe_w))
863	{	1164	{
864	#if EV_USE_EVENTFD	1165	#if EV_USE_EVENTFD
		1166	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1167	if (evfd < 0 && errno == EINVAL)
865	if ((evfd = eventfd (0, 0)) >= 0)	1168	evfd = eventfd (0, 0);
		1169
		1170	if (evfd >= 0)
866	{	1171	{
867	evpipe [0] = -1;	1172	evpipe [0] = -1;
868	fd_intern (evfd);	1173	fd_intern (evfd); /* doing it twice doesn't hurt */
869	ev_io_set (&pipeev, evfd, EV_READ);	1174	ev_io_set (&pipe_w, evfd, EV_READ);
870	}	1175	}
871	else	1176	else
872	#endif	1177	#endif
873	{	1178	{
874	while (pipe (evpipe))	1179	while (pipe (evpipe))
875	syserr ("(libev) error creating signal/async pipe");	1180	ev_syserr ("(libev) error creating signal/async pipe");
876		1181
877	fd_intern (evpipe [0]);	1182	fd_intern (evpipe [0]);
878	fd_intern (evpipe [1]);	1183	fd_intern (evpipe [1]);
879	ev_io_set (&pipeev, evpipe [0], EV_READ);	1184	ev_io_set (&pipe_w, evpipe [0], EV_READ);
880	}	1185	}
881		1186
882	ev_io_start (EV_A_ &pipeev);	1187	ev_io_start (EV_A_ &pipe_w);
883	ev_unref (EV_A); /* watcher should not keep loop alive */	1188	ev_unref (EV_A); /* watcher should not keep loop alive */
884	}	1189	}
885	}	1190	}
886		1191
887	void inline_size	1192	inline_size void
888	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1193	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
889	{	1194	{
890	if (!*flag)	1195	if (!*flag)
891	{	1196	{
892	int old_errno = errno; /* save errno because write might clobber it */	1197	int old_errno = errno; /* save errno because write might clobber it */
…		…
905		1210
906	errno = old_errno;	1211	errno = old_errno;
907	}	1212	}
908	}	1213	}
909		1214
		1215	/* called whenever the libev signal pipe */
		1216	/* got some events (signal, async) */
910	static void	1217	static void
911	pipecb (EV_P_ ev_io *iow, int revents)	1218	pipecb (EV_P_ ev_io *iow, int revents)
912	{	1219	{
		1220	int i;
		1221
913	#if EV_USE_EVENTFD	1222	#if EV_USE_EVENTFD
914	if (evfd >= 0)	1223	if (evfd >= 0)
915	{	1224	{
916	uint64_t counter = 1;	1225	uint64_t counter;
917	read (evfd, &counter, sizeof (uint64_t));	1226	read (evfd, &counter, sizeof (uint64_t));
918	}	1227	}
919	else	1228	else
920	#endif	1229	#endif
921	{	1230	{
922	char dummy;	1231	char dummy;
923	read (evpipe [0], &dummy, 1);	1232	read (evpipe [0], &dummy, 1);
924	}	1233	}
925		1234
926	if (gotsig && ev_is_default_loop (EV_A))	1235	if (sig_pending)
927	{	1236	{
928	int signum;	1237	sig_pending = 0;
929	gotsig = 0;
930		1238
931	for (signum = signalmax; signum--; )	1239	for (i = EV_NSIG - 1; i--; )
932	if (signals [signum].gotsig)	1240	if (expect_false (signals [i].pending))
933	ev_feed_signal_event (EV_A_ signum + 1);	1241	ev_feed_signal_event (EV_A_ i + 1);
934	}	1242	}
935		1243
936	#if EV_ASYNC_ENABLE	1244	#if EV_ASYNC_ENABLE
937	if (gotasync)	1245	if (async_pending)
938	{	1246	{
939	int i;	1247	async_pending = 0;
940	gotasync = 0;
941		1248
942	for (i = asynccnt; i--; )	1249	for (i = asynccnt; i--; )
943	if (asyncs [i]->sent)	1250	if (asyncs [i]->sent)
944	{	1251	{
945	asyncs [i]->sent = 0;	1252	asyncs [i]->sent = 0;
…		…
953		1260
954	static void	1261	static void
955	ev_sighandler (int signum)	1262	ev_sighandler (int signum)
956	{	1263	{
957	#if EV_MULTIPLICITY	1264	#if EV_MULTIPLICITY
958	struct ev_loop *loop = &default_loop_struct;	1265	EV_P = signals [signum - 1].loop;
959	#endif	1266	#endif
960		1267
961	#if _WIN32	1268	#if _WIN32
962	signal (signum, ev_sighandler);	1269	signal (signum, ev_sighandler);
963	#endif	1270	#endif
964		1271
965	signals [signum - 1].gotsig = 1;	1272	signals [signum - 1].pending = 1;
966	evpipe_write (EV_A_ &gotsig);	1273	evpipe_write (EV_A_ &sig_pending);
967	}	1274	}
968		1275
969	void noinline	1276	void noinline
970	ev_feed_signal_event (EV_P_ int signum)	1277	ev_feed_signal_event (EV_P_ int signum)
971	{	1278	{
972	WL w;	1279	WL w;
973		1280
		1281	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1282	return;
		1283
		1284	--signum;
		1285
974	#if EV_MULTIPLICITY	1286	#if EV_MULTIPLICITY
975	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1287	/* it is permissible to try to feed a signal to the wrong loop */
976	#endif	1288	/* or, likely more useful, feeding a signal nobody is waiting for */
977		1289
978	--signum;	1290	if (expect_false (signals [signum].loop != EV_A))
979
980	if (signum < 0 || signum >= signalmax)
981	return;	1291	return;
		1292	#endif
982		1293
983	signals [signum].gotsig = 0;	1294	signals [signum].pending = 0;
984		1295
985	for (w = signals [signum].head; w; w = w->next)	1296	for (w = signals [signum].head; w; w = w->next)
986	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1297	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
987	}	1298	}
988		1299
		1300	#if EV_USE_SIGNALFD
		1301	static void
		1302	sigfdcb (EV_P_ ev_io *iow, int revents)
		1303	{
		1304	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1305
		1306	for (;;)
		1307	{
		1308	ssize_t res = read (sigfd, si, sizeof (si));
		1309
		1310	/* not ISO-C, as res might be -1, but works with SuS */
		1311	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1312	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1313
		1314	if (res < (ssize_t)sizeof (si))
		1315	break;
		1316	}
		1317	}
		1318	#endif
		1319
989	/*****************************************************************************/	1320	/*****************************************************************************/
990		1321
991	static WL childs [EV_PID_HASHSIZE];	1322	static WL childs [EV_PID_HASHSIZE];
992		1323
993	#ifndef _WIN32	1324	#ifndef _WIN32
…		…
996		1327
997	#ifndef WIFCONTINUED	1328	#ifndef WIFCONTINUED
998	# define WIFCONTINUED(status) 0	1329	# define WIFCONTINUED(status) 0
999	#endif	1330	#endif
1000		1331
1001	void inline_speed	1332	/* handle a single child status event */
		1333	inline_speed void
1002	child_reap (EV_P_ int chain, int pid, int status)	1334	child_reap (EV_P_ int chain, int pid, int status)
1003	{	1335	{
1004	ev_child *w;	1336	ev_child *w;
1005	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1337	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1006		1338
…		…
1019		1351
1020	#ifndef WCONTINUED	1352	#ifndef WCONTINUED
1021	# define WCONTINUED 0	1353	# define WCONTINUED 0
1022	#endif	1354	#endif
1023		1355
		1356	/* called on sigchld etc., calls waitpid */
1024	static void	1357	static void
1025	childcb (EV_P_ ev_signal *sw, int revents)	1358	childcb (EV_P_ ev_signal *sw, int revents)
1026	{	1359	{
1027	int pid, status;	1360	int pid, status;
1028		1361
…		…
1109	/* kqueue is borked on everything but netbsd apparently */	1442	/* kqueue is borked on everything but netbsd apparently */
1110	/* it usually doesn't work correctly on anything but sockets and pipes */	1443	/* it usually doesn't work correctly on anything but sockets and pipes */
1111	flags &= ~EVBACKEND_KQUEUE;	1444	flags &= ~EVBACKEND_KQUEUE;
1112	#endif	1445	#endif
1113	#ifdef __APPLE__	1446	#ifdef __APPLE__
1114	// flags &= ~EVBACKEND_KQUEUE; for documentation	1447	/* only select works correctly on that "unix-certified" platform */
1115	flags &= ~EVBACKEND_POLL;	1448	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1449	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1116	#endif	1450	#endif
1117		1451
1118	return flags;	1452	return flags;
1119	}	1453	}
1120		1454
…		…
1134	ev_backend (EV_P)	1468	ev_backend (EV_P)
1135	{	1469	{
1136	return backend;	1470	return backend;
1137	}	1471	}
1138		1472
		1473	#if EV_MINIMAL < 2
1139	unsigned int	1474	unsigned int
1140	ev_loop_count (EV_P)	1475	ev_loop_count (EV_P)
1141	{	1476	{
1142	return loop_count;	1477	return loop_count;
1143	}	1478	}
1144		1479
		1480	unsigned int
		1481	ev_loop_depth (EV_P)
		1482	{
		1483	return loop_depth;
		1484	}
		1485
1145	void	1486	void
1146	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1487	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1147	{	1488	{
1148	io_blocktime = interval;	1489	io_blocktime = interval;
1149	}	1490	}
…		…
1152	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1493	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1153	{	1494	{
1154	timeout_blocktime = interval;	1495	timeout_blocktime = interval;
1155	}	1496	}
1156		1497
		1498	void
		1499	ev_set_userdata (EV_P_ void *data)
		1500	{
		1501	userdata = data;
		1502	}
		1503
		1504	void *
		1505	ev_userdata (EV_P)
		1506	{
		1507	return userdata;
		1508	}
		1509
		1510	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1511	{
		1512	invoke_cb = invoke_pending_cb;
		1513	}
		1514
		1515	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1516	{
		1517	release_cb = release;
		1518	acquire_cb = acquire;
		1519	}
		1520	#endif
		1521
		1522	/* initialise a loop structure, must be zero-initialised */
1157	static void noinline	1523	static void noinline
1158	loop_init (EV_P_ unsigned int flags)	1524	loop_init (EV_P_ unsigned int flags)
1159	{	1525	{
1160	if (!backend)	1526	if (!backend)
1161	{	1527	{
		1528	#if EV_USE_REALTIME
		1529	if (!have_realtime)
		1530	{
		1531	struct timespec ts;
		1532
		1533	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1534	have_realtime = 1;
		1535	}
		1536	#endif
		1537
1162	#if EV_USE_MONOTONIC	1538	#if EV_USE_MONOTONIC
		1539	if (!have_monotonic)
1163	{	1540	{
1164	struct timespec ts;	1541	struct timespec ts;
		1542
1165	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1543	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1166	have_monotonic = 1;	1544	have_monotonic = 1;
1167	}	1545	}
1168	#endif	1546	#endif
		1547
		1548	/* pid check not overridable via env */
		1549	#ifndef _WIN32
		1550	if (flags & EVFLAG_FORKCHECK)
		1551	curpid = getpid ();
		1552	#endif
		1553
		1554	if (!(flags & EVFLAG_NOENV)
		1555	&& !enable_secure ()
		1556	&& getenv ("LIBEV_FLAGS"))
		1557	flags = atoi (getenv ("LIBEV_FLAGS"));
1169		1558
1170	ev_rt_now = ev_time ();	1559	ev_rt_now = ev_time ();
1171	mn_now = get_clock ();	1560	mn_now = get_clock ();
1172	now_floor = mn_now;	1561	now_floor = mn_now;
1173	rtmn_diff = ev_rt_now - mn_now;	1562	rtmn_diff = ev_rt_now - mn_now;
		1563	#if EV_MINIMAL < 2
		1564	invoke_cb = ev_invoke_pending;
		1565	#endif
1174		1566
1175	io_blocktime = 0.;	1567	io_blocktime = 0.;
1176	timeout_blocktime = 0.;	1568	timeout_blocktime = 0.;
1177	backend = 0;	1569	backend = 0;
1178	backend_fd = -1;	1570	backend_fd = -1;
1179	gotasync = 0;	1571	sig_pending = 0;
		1572	#if EV_ASYNC_ENABLE
		1573	async_pending = 0;
		1574	#endif
1180	#if EV_USE_INOTIFY	1575	#if EV_USE_INOTIFY
1181	fs_fd = -2;	1576	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1182	#endif	1577	#endif
1183		1578	#if EV_USE_SIGNALFD
1184	/* pid check not overridable via env */	1579	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1185	#ifndef _WIN32
1186	if (flags & EVFLAG_FORKCHECK)
1187	curpid = getpid ();
1188	#endif	1580	#endif
1189
1190	if (!(flags & EVFLAG_NOENV)
1191	&& !enable_secure ()
1192	&& getenv ("LIBEV_FLAGS"))
1193	flags = atoi (getenv ("LIBEV_FLAGS"));
1194		1581
1195	if (!(flags & 0x0000ffffU))	1582	if (!(flags & 0x0000ffffU))
1196	flags |= ev_recommended_backends ();	1583	flags |= ev_recommended_backends ();
1197		1584
1198	#if EV_USE_PORT	1585	#if EV_USE_PORT
…		…
1209	#endif	1596	#endif
1210	#if EV_USE_SELECT	1597	#if EV_USE_SELECT
1211	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1598	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1212	#endif	1599	#endif
1213		1600
		1601	ev_prepare_init (&pending_w, pendingcb);
		1602
1214	ev_init (&pipeev, pipecb);	1603	ev_init (&pipe_w, pipecb);
1215	ev_set_priority (&pipeev, EV_MAXPRI);	1604	ev_set_priority (&pipe_w, EV_MAXPRI);
1216	}	1605	}
1217	}	1606	}
1218		1607
		1608	/* free up a loop structure */
1219	static void noinline	1609	static void noinline
1220	loop_destroy (EV_P)	1610	loop_destroy (EV_P)
1221	{	1611	{
1222	int i;	1612	int i;
1223		1613
1224	if (ev_is_active (&pipeev))	1614	if (ev_is_active (&pipe_w))
1225	{	1615	{
1226	ev_ref (EV_A); /* signal watcher */	1616	/*ev_ref (EV_A);*/
1227	ev_io_stop (EV_A_ &pipeev);	1617	/*ev_io_stop (EV_A_ &pipe_w);*/
1228		1618
1229	#if EV_USE_EVENTFD	1619	#if EV_USE_EVENTFD
1230	if (evfd >= 0)	1620	if (evfd >= 0)
1231	close (evfd);	1621	close (evfd);
1232	#endif	1622	#endif
…		…
1236	close (evpipe [0]);	1626	close (evpipe [0]);
1237	close (evpipe [1]);	1627	close (evpipe [1]);
1238	}	1628	}
1239	}	1629	}
1240		1630
		1631	#if EV_USE_SIGNALFD
		1632	if (ev_is_active (&sigfd_w))
		1633	{
		1634	/*ev_ref (EV_A);*/
		1635	/*ev_io_stop (EV_A_ &sigfd_w);*/
		1636
		1637	close (sigfd);
		1638	}
		1639	#endif
		1640
1241	#if EV_USE_INOTIFY	1641	#if EV_USE_INOTIFY
1242	if (fs_fd >= 0)	1642	if (fs_fd >= 0)
1243	close (fs_fd);	1643	close (fs_fd);
1244	#endif	1644	#endif
1245		1645
…		…
1268	#if EV_IDLE_ENABLE	1668	#if EV_IDLE_ENABLE
1269	array_free (idle, [i]);	1669	array_free (idle, [i]);
1270	#endif	1670	#endif
1271	}	1671	}
1272		1672
1273	ev_free (anfds); anfdmax = 0;	1673	ev_free (anfds); anfds = 0; anfdmax = 0;
1274		1674
1275	/* have to use the microsoft-never-gets-it-right macro */	1675	/* have to use the microsoft-never-gets-it-right macro */
		1676	array_free (rfeed, EMPTY);
1276	array_free (fdchange, EMPTY);	1677	array_free (fdchange, EMPTY);
1277	array_free (timer, EMPTY);	1678	array_free (timer, EMPTY);
1278	#if EV_PERIODIC_ENABLE	1679	#if EV_PERIODIC_ENABLE
1279	array_free (periodic, EMPTY);	1680	array_free (periodic, EMPTY);
1280	#endif	1681	#endif
…		…
1289		1690
1290	backend = 0;	1691	backend = 0;
1291	}	1692	}
1292		1693
1293	#if EV_USE_INOTIFY	1694	#if EV_USE_INOTIFY
1294	void inline_size infy_fork (EV_P);	1695	inline_size void infy_fork (EV_P);
1295	#endif	1696	#endif
1296		1697
1297	void inline_size	1698	inline_size void
1298	loop_fork (EV_P)	1699	loop_fork (EV_P)
1299	{	1700	{
1300	#if EV_USE_PORT	1701	#if EV_USE_PORT
1301	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1702	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1302	#endif	1703	#endif
…		…
1308	#endif	1709	#endif
1309	#if EV_USE_INOTIFY	1710	#if EV_USE_INOTIFY
1310	infy_fork (EV_A);	1711	infy_fork (EV_A);
1311	#endif	1712	#endif
1312		1713
1313	if (ev_is_active (&pipeev))	1714	if (ev_is_active (&pipe_w))
1314	{	1715	{
1315	/* this "locks" the handlers against writing to the pipe */	1716	/* this "locks" the handlers against writing to the pipe */
1316	/* while we modify the fd vars */	1717	/* while we modify the fd vars */
1317	gotsig = 1;	1718	sig_pending = 1;
1318	#if EV_ASYNC_ENABLE	1719	#if EV_ASYNC_ENABLE
1319	gotasync = 1;	1720	async_pending = 1;
1320	#endif	1721	#endif
1321		1722
1322	ev_ref (EV_A);	1723	ev_ref (EV_A);
1323	ev_io_stop (EV_A_ &pipeev);	1724	ev_io_stop (EV_A_ &pipe_w);
1324		1725
1325	#if EV_USE_EVENTFD	1726	#if EV_USE_EVENTFD
1326	if (evfd >= 0)	1727	if (evfd >= 0)
1327	close (evfd);	1728	close (evfd);
1328	#endif	1729	#endif
…		…
1333	close (evpipe [1]);	1734	close (evpipe [1]);
1334	}	1735	}
1335		1736
1336	evpipe_init (EV_A);	1737	evpipe_init (EV_A);
1337	/* now iterate over everything, in case we missed something */	1738	/* now iterate over everything, in case we missed something */
1338	pipecb (EV_A_ &pipeev, EV_READ);	1739	pipecb (EV_A_ &pipe_w, EV_READ);
1339	}	1740	}
1340		1741
1341	postfork = 0;	1742	postfork = 0;
1342	}	1743	}
1343		1744
1344	#if EV_MULTIPLICITY	1745	#if EV_MULTIPLICITY
		1746
1345	struct ev_loop *	1747	struct ev_loop *
1346	ev_loop_new (unsigned int flags)	1748	ev_loop_new (unsigned int flags)
1347	{	1749	{
1348	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1750	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1349		1751
1350	memset (loop, 0, sizeof (struct ev_loop));	1752	memset (EV_A, 0, sizeof (struct ev_loop));
1351
1352	loop_init (EV_A_ flags);	1753	loop_init (EV_A_ flags);
1353		1754
1354	if (ev_backend (EV_A))	1755	if (ev_backend (EV_A))
1355	return loop;	1756	return EV_A;
1356		1757
1357	return 0;	1758	return 0;
1358	}	1759	}
1359		1760
1360	void	1761	void
…		…
1367	void	1768	void
1368	ev_loop_fork (EV_P)	1769	ev_loop_fork (EV_P)
1369	{	1770	{
1370	postfork = 1; /* must be in line with ev_default_fork */	1771	postfork = 1; /* must be in line with ev_default_fork */
1371	}	1772	}
		1773	#endif /* multiplicity */
1372		1774
		1775	#if EV_VERIFY
		1776	static void noinline
		1777	verify_watcher (EV_P_ W w)
		1778	{
		1779	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1780
		1781	if (w->pending)
		1782	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1783	}
		1784
		1785	static void noinline
		1786	verify_heap (EV_P_ ANHE *heap, int N)
		1787	{
		1788	int i;
		1789
		1790	for (i = HEAP0; i < N + HEAP0; ++i)
		1791	{
		1792	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1793	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1794	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1795
		1796	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1797	}
		1798	}
		1799
		1800	static void noinline
		1801	array_verify (EV_P_ W *ws, int cnt)
		1802	{
		1803	while (cnt--)
		1804	{
		1805	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1806	verify_watcher (EV_A_ ws [cnt]);
		1807	}
		1808	}
		1809	#endif
		1810
		1811	#if EV_MINIMAL < 2
		1812	void
		1813	ev_loop_verify (EV_P)
		1814	{
		1815	#if EV_VERIFY
		1816	int i;
		1817	WL w;
		1818
		1819	assert (activecnt >= -1);
		1820
		1821	assert (fdchangemax >= fdchangecnt);
		1822	for (i = 0; i < fdchangecnt; ++i)
		1823	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1824
		1825	assert (anfdmax >= 0);
		1826	for (i = 0; i < anfdmax; ++i)
		1827	for (w = anfds [i].head; w; w = w->next)
		1828	{
		1829	verify_watcher (EV_A_ (W)w);
		1830	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1831	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1832	}
		1833
		1834	assert (timermax >= timercnt);
		1835	verify_heap (EV_A_ timers, timercnt);
		1836
		1837	#if EV_PERIODIC_ENABLE
		1838	assert (periodicmax >= periodiccnt);
		1839	verify_heap (EV_A_ periodics, periodiccnt);
		1840	#endif
		1841
		1842	for (i = NUMPRI; i--; )
		1843	{
		1844	assert (pendingmax [i] >= pendingcnt [i]);
		1845	#if EV_IDLE_ENABLE
		1846	assert (idleall >= 0);
		1847	assert (idlemax [i] >= idlecnt [i]);
		1848	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1849	#endif
		1850	}
		1851
		1852	#if EV_FORK_ENABLE
		1853	assert (forkmax >= forkcnt);
		1854	array_verify (EV_A_ (W *)forks, forkcnt);
		1855	#endif
		1856
		1857	#if EV_ASYNC_ENABLE
		1858	assert (asyncmax >= asynccnt);
		1859	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1860	#endif
		1861
		1862	assert (preparemax >= preparecnt);
		1863	array_verify (EV_A_ (W *)prepares, preparecnt);
		1864
		1865	assert (checkmax >= checkcnt);
		1866	array_verify (EV_A_ (W *)checks, checkcnt);
		1867
		1868	# if 0
		1869	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1870	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		1871	# endif
		1872	#endif
		1873	}
1373	#endif	1874	#endif
1374		1875
1375	#if EV_MULTIPLICITY	1876	#if EV_MULTIPLICITY
1376	struct ev_loop *	1877	struct ev_loop *
1377	ev_default_loop_init (unsigned int flags)	1878	ev_default_loop_init (unsigned int flags)
…		…
1381	#endif	1882	#endif
1382	{	1883	{
1383	if (!ev_default_loop_ptr)	1884	if (!ev_default_loop_ptr)
1384	{	1885	{
1385	#if EV_MULTIPLICITY	1886	#if EV_MULTIPLICITY
1386	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1887	EV_P = ev_default_loop_ptr = &default_loop_struct;
1387	#else	1888	#else
1388	ev_default_loop_ptr = 1;	1889	ev_default_loop_ptr = 1;
1389	#endif	1890	#endif
1390		1891
1391	loop_init (EV_A_ flags);	1892	loop_init (EV_A_ flags);
…		…
1408		1909
1409	void	1910	void
1410	ev_default_destroy (void)	1911	ev_default_destroy (void)
1411	{	1912	{
1412	#if EV_MULTIPLICITY	1913	#if EV_MULTIPLICITY
1413	struct ev_loop *loop = ev_default_loop_ptr;	1914	EV_P = ev_default_loop_ptr;
1414	#endif	1915	#endif
		1916
		1917	ev_default_loop_ptr = 0;
1415		1918
1416	#ifndef _WIN32	1919	#ifndef _WIN32
1417	ev_ref (EV_A); /* child watcher */	1920	ev_ref (EV_A); /* child watcher */
1418	ev_signal_stop (EV_A_ &childev);	1921	ev_signal_stop (EV_A_ &childev);
1419	#endif	1922	#endif
…		…
1423		1926
1424	void	1927	void
1425	ev_default_fork (void)	1928	ev_default_fork (void)
1426	{	1929	{
1427	#if EV_MULTIPLICITY	1930	#if EV_MULTIPLICITY
1428	struct ev_loop *loop = ev_default_loop_ptr;	1931	EV_P = ev_default_loop_ptr;
1429	#endif	1932	#endif
1430		1933
1431	if (backend)
1432	postfork = 1; /* must be in line with ev_loop_fork */	1934	postfork = 1; /* must be in line with ev_loop_fork */
1433	}	1935	}
1434		1936
1435	/*****************************************************************************/	1937	/*****************************************************************************/
1436		1938
1437	void	1939	void
1438	ev_invoke (EV_P_ void *w, int revents)	1940	ev_invoke (EV_P_ void *w, int revents)
1439	{	1941	{
1440	EV_CB_INVOKE ((W)w, revents);	1942	EV_CB_INVOKE ((W)w, revents);
1441	}	1943	}
1442		1944
1443	void inline_speed	1945	unsigned int
1444	call_pending (EV_P)	1946	ev_pending_count (EV_P)
		1947	{
		1948	int pri;
		1949	unsigned int count = 0;
		1950
		1951	for (pri = NUMPRI; pri--; )
		1952	count += pendingcnt [pri];
		1953
		1954	return count;
		1955	}
		1956
		1957	void noinline
		1958	ev_invoke_pending (EV_P)
1445	{	1959	{
1446	int pri;	1960	int pri;
1447		1961
1448	for (pri = NUMPRI; pri--; )	1962	for (pri = NUMPRI; pri--; )
1449	while (pendingcnt [pri])	1963	while (pendingcnt [pri])
1450	{	1964	{
1451	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1965	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1452		1966
1453	if (expect_true (p->w))
1454	{
1455	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1967	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1968	/* ^ this is no longer true, as pending_w could be here */
1456		1969
1457	p->w->pending = 0;	1970	p->w->pending = 0;
1458	EV_CB_INVOKE (p->w, p->events);	1971	EV_CB_INVOKE (p->w, p->events);
1459	}	1972	EV_FREQUENT_CHECK;
1460	}	1973	}
1461	}	1974	}
1462		1975
1463	void inline_size
1464	timers_reify (EV_P)
1465	{
1466	while (timercnt && ev_at (timers [1]) <= mn_now)
1467	{
1468	ev_timer *w = (ev_timer *)timers [1];
1469
1470	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1471
1472	/* first reschedule or stop timer */
1473	if (w->repeat)
1474	{
1475	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1476
1477	ev_at (w) += w->repeat;
1478	if (ev_at (w) < mn_now)
1479	ev_at (w) = mn_now;
1480
1481	downheap (timers, timercnt, 1);
1482	}
1483	else
1484	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1485
1486	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1487	}
1488	}
1489
1490	#if EV_PERIODIC_ENABLE
1491	void inline_size
1492	periodics_reify (EV_P)
1493	{
1494	while (periodiccnt && ev_at (periodics [1]) <= ev_rt_now)
1495	{
1496	ev_periodic *w = (ev_periodic *)periodics [1];
1497
1498	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1499
1500	/* first reschedule or stop timer */
1501	if (w->reschedule_cb)
1502	{
1503	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1504	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
1505	downheap (periodics, periodiccnt, 1);
1506	}
1507	else if (w->interval)
1508	{
1509	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1510	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1511	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1512	downheap (periodics, periodiccnt, 1);
1513	}
1514	else
1515	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1516
1517	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1518	}
1519	}
1520
1521	static void noinline
1522	periodics_reschedule (EV_P)
1523	{
1524	int i;
1525
1526	/* adjust periodics after time jump */
1527	for (i = 0; i < periodiccnt; ++i)
1528	{
1529	ev_periodic *w = (ev_periodic *)periodics [i];
1530
1531	if (w->reschedule_cb)
1532	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1533	else if (w->interval)
1534	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1535	}
1536
1537	/* now rebuild the heap */
1538	for (i = periodiccnt >> 1; i--; )
1539	downheap (periodics, periodiccnt, i);
1540	}
1541	#endif
1542
1543	#if EV_IDLE_ENABLE	1976	#if EV_IDLE_ENABLE
1544	void inline_size	1977	/* make idle watchers pending. this handles the "call-idle */
		1978	/* only when higher priorities are idle" logic */
		1979	inline_size void
1545	idle_reify (EV_P)	1980	idle_reify (EV_P)
1546	{	1981	{
1547	if (expect_false (idleall))	1982	if (expect_false (idleall))
1548	{	1983	{
1549	int pri;	1984	int pri;
…		…
1561	}	1996	}
1562	}	1997	}
1563	}	1998	}
1564	#endif	1999	#endif
1565		2000
1566	void inline_speed	2001	/* make timers pending */
		2002	inline_size void
		2003	timers_reify (EV_P)
		2004	{
		2005	EV_FREQUENT_CHECK;
		2006
		2007	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		2008	{
		2009	do
		2010	{
		2011	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2012
		2013	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2014
		2015	/* first reschedule or stop timer */
		2016	if (w->repeat)
		2017	{
		2018	ev_at (w) += w->repeat;
		2019	if (ev_at (w) < mn_now)
		2020	ev_at (w) = mn_now;
		2021
		2022	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		2023
		2024	ANHE_at_cache (timers [HEAP0]);
		2025	downheap (timers, timercnt, HEAP0);
		2026	}
		2027	else
		2028	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2029
		2030	EV_FREQUENT_CHECK;
		2031	feed_reverse (EV_A_ (W)w);
		2032	}
		2033	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
		2034
		2035	feed_reverse_done (EV_A_ EV_TIMEOUT);
		2036	}
		2037	}
		2038
		2039	#if EV_PERIODIC_ENABLE
		2040	/* make periodics pending */
		2041	inline_size void
		2042	periodics_reify (EV_P)
		2043	{
		2044	EV_FREQUENT_CHECK;
		2045
		2046	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		2047	{
		2048	int feed_count = 0;
		2049
		2050	do
		2051	{
		2052	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2053
		2054	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2055
		2056	/* first reschedule or stop timer */
		2057	if (w->reschedule_cb)
		2058	{
		2059	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2060
		2061	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		2062
		2063	ANHE_at_cache (periodics [HEAP0]);
		2064	downheap (periodics, periodiccnt, HEAP0);
		2065	}
		2066	else if (w->interval)
		2067	{
		2068	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2069	/* if next trigger time is not sufficiently in the future, put it there */
		2070	/* this might happen because of floating point inexactness */
		2071	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2072	{
		2073	ev_at (w) += w->interval;
		2074
		2075	/* if interval is unreasonably low we might still have a time in the past */
		2076	/* so correct this. this will make the periodic very inexact, but the user */
		2077	/* has effectively asked to get triggered more often than possible */
		2078	if (ev_at (w) < ev_rt_now)
		2079	ev_at (w) = ev_rt_now;
		2080	}
		2081
		2082	ANHE_at_cache (periodics [HEAP0]);
		2083	downheap (periodics, periodiccnt, HEAP0);
		2084	}
		2085	else
		2086	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2087
		2088	EV_FREQUENT_CHECK;
		2089	feed_reverse (EV_A_ (W)w);
		2090	}
		2091	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
		2092
		2093	feed_reverse_done (EV_A_ EV_PERIODIC);
		2094	}
		2095	}
		2096
		2097	/* simply recalculate all periodics */
		2098	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
		2099	static void noinline
		2100	periodics_reschedule (EV_P)
		2101	{
		2102	int i;
		2103
		2104	/* adjust periodics after time jump */
		2105	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		2106	{
		2107	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		2108
		2109	if (w->reschedule_cb)
		2110	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2111	else if (w->interval)
		2112	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2113
		2114	ANHE_at_cache (periodics [i]);
		2115	}
		2116
		2117	reheap (periodics, periodiccnt);
		2118	}
		2119	#endif
		2120
		2121	/* adjust all timers by a given offset */
		2122	static void noinline
		2123	timers_reschedule (EV_P_ ev_tstamp adjust)
		2124	{
		2125	int i;
		2126
		2127	for (i = 0; i < timercnt; ++i)
		2128	{
		2129	ANHE *he = timers + i + HEAP0;
		2130	ANHE_w (*he)->at += adjust;
		2131	ANHE_at_cache (*he);
		2132	}
		2133	}
		2134
		2135	/* fetch new monotonic and realtime times from the kernel */
		2136	/* also detetc if there was a timejump, and act accordingly */
		2137	inline_speed void
1567	time_update (EV_P_ ev_tstamp max_block)	2138	time_update (EV_P_ ev_tstamp max_block)
1568	{	2139	{
1569	int i;
1570
1571	#if EV_USE_MONOTONIC	2140	#if EV_USE_MONOTONIC
1572	if (expect_true (have_monotonic))	2141	if (expect_true (have_monotonic))
1573	{	2142	{
		2143	int i;
1574	ev_tstamp odiff = rtmn_diff;	2144	ev_tstamp odiff = rtmn_diff;
1575		2145
1576	mn_now = get_clock ();	2146	mn_now = get_clock ();
1577		2147
1578	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2148	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1596	*/	2166	*/
1597	for (i = 4; --i; )	2167	for (i = 4; --i; )
1598	{	2168	{
1599	rtmn_diff = ev_rt_now - mn_now;	2169	rtmn_diff = ev_rt_now - mn_now;
1600		2170
1601	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	2171	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1602	return; /* all is well */	2172	return; /* all is well */
1603		2173
1604	ev_rt_now = ev_time ();	2174	ev_rt_now = ev_time ();
1605	mn_now = get_clock ();	2175	mn_now = get_clock ();
1606	now_floor = mn_now;	2176	now_floor = mn_now;
1607	}	2177	}
1608		2178
		2179	/* no timer adjustment, as the monotonic clock doesn't jump */
		2180	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1609	# if EV_PERIODIC_ENABLE	2181	# if EV_PERIODIC_ENABLE
1610	periodics_reschedule (EV_A);	2182	periodics_reschedule (EV_A);
1611	# endif	2183	# endif
1612	/* no timer adjustment, as the monotonic clock doesn't jump */
1613	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1614	}	2184	}
1615	else	2185	else
1616	#endif	2186	#endif
1617	{	2187	{
1618	ev_rt_now = ev_time ();	2188	ev_rt_now = ev_time ();
1619		2189
1620	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2190	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1621	{	2191	{
		2192	/* adjust timers. this is easy, as the offset is the same for all of them */
		2193	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1622	#if EV_PERIODIC_ENABLE	2194	#if EV_PERIODIC_ENABLE
1623	periodics_reschedule (EV_A);	2195	periodics_reschedule (EV_A);
1624	#endif	2196	#endif
1625	/* adjust timers. this is easy, as the offset is the same for all of them */
1626	for (i = 1; i <= timercnt; ++i)
1627	ev_at (timers [i]) += ev_rt_now - mn_now;
1628	}	2197	}
1629		2198
1630	mn_now = ev_rt_now;	2199	mn_now = ev_rt_now;
1631	}	2200	}
1632	}	2201	}
1633		2202
1634	void	2203	void
1635	ev_ref (EV_P)
1636	{
1637	++activecnt;
1638	}
1639
1640	void
1641	ev_unref (EV_P)
1642	{
1643	--activecnt;
1644	}
1645
1646	static int loop_done;
1647
1648	void
1649	ev_loop (EV_P_ int flags)	2204	ev_loop (EV_P_ int flags)
1650	{	2205	{
		2206	#if EV_MINIMAL < 2
		2207	++loop_depth;
		2208	#endif
		2209
		2210	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2211
1651	loop_done = EVUNLOOP_CANCEL;	2212	loop_done = EVUNLOOP_CANCEL;
1652		2213
1653	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2214	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1654		2215
1655	do	2216	do
1656	{	2217	{
		2218	#if EV_VERIFY >= 2
		2219	ev_loop_verify (EV_A);
		2220	#endif
		2221
1657	#ifndef _WIN32	2222	#ifndef _WIN32
1658	if (expect_false (curpid)) /* penalise the forking check even more */	2223	if (expect_false (curpid)) /* penalise the forking check even more */
1659	if (expect_false (getpid () != curpid))	2224	if (expect_false (getpid () != curpid))
1660	{	2225	{
1661	curpid = getpid ();	2226	curpid = getpid ();
…		…
1667	/* we might have forked, so queue fork handlers */	2232	/* we might have forked, so queue fork handlers */
1668	if (expect_false (postfork))	2233	if (expect_false (postfork))
1669	if (forkcnt)	2234	if (forkcnt)
1670	{	2235	{
1671	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2236	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1672	call_pending (EV_A);	2237	EV_INVOKE_PENDING;
1673	}	2238	}
1674	#endif	2239	#endif
1675		2240
1676	/* queue prepare watchers (and execute them) */	2241	/* queue prepare watchers (and execute them) */
1677	if (expect_false (preparecnt))	2242	if (expect_false (preparecnt))
1678	{	2243	{
1679	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2244	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1680	call_pending (EV_A);	2245	EV_INVOKE_PENDING;
1681	}	2246	}
1682		2247
1683	if (expect_false (!activecnt))	2248	if (expect_false (loop_done))
1684	break;	2249	break;
1685		2250
1686	/* we might have forked, so reify kernel state if necessary */	2251	/* we might have forked, so reify kernel state if necessary */
1687	if (expect_false (postfork))	2252	if (expect_false (postfork))
1688	loop_fork (EV_A);	2253	loop_fork (EV_A);
…		…
1695	ev_tstamp waittime = 0.;	2260	ev_tstamp waittime = 0.;
1696	ev_tstamp sleeptime = 0.;	2261	ev_tstamp sleeptime = 0.;
1697		2262
1698	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2263	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1699	{	2264	{
		2265	/* remember old timestamp for io_blocktime calculation */
		2266	ev_tstamp prev_mn_now = mn_now;
		2267
1700	/* update time to cancel out callback processing overhead */	2268	/* update time to cancel out callback processing overhead */
1701	time_update (EV_A_ 1e100);	2269	time_update (EV_A_ 1e100);
1702		2270
1703	waittime = MAX_BLOCKTIME;	2271	waittime = MAX_BLOCKTIME;
1704		2272
1705	if (timercnt)	2273	if (timercnt)
1706	{	2274	{
1707	ev_tstamp to = ev_at (timers [1]) - mn_now + backend_fudge;	2275	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1708	if (waittime > to) waittime = to;	2276	if (waittime > to) waittime = to;
1709	}	2277	}
1710		2278
1711	#if EV_PERIODIC_ENABLE	2279	#if EV_PERIODIC_ENABLE
1712	if (periodiccnt)	2280	if (periodiccnt)
1713	{	2281	{
1714	ev_tstamp to = ev_at (periodics [1]) - ev_rt_now + backend_fudge;	2282	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1715	if (waittime > to) waittime = to;	2283	if (waittime > to) waittime = to;
1716	}	2284	}
1717	#endif	2285	#endif
1718		2286
		2287	/* don't let timeouts decrease the waittime below timeout_blocktime */
1719	if (expect_false (waittime < timeout_blocktime))	2288	if (expect_false (waittime < timeout_blocktime))
1720	waittime = timeout_blocktime;	2289	waittime = timeout_blocktime;
1721		2290
1722	sleeptime = waittime - backend_fudge;	2291	/* extra check because io_blocktime is commonly 0 */
1723
1724	if (expect_true (sleeptime > io_blocktime))	2292	if (expect_false (io_blocktime))
1725	sleeptime = io_blocktime;
1726
1727	if (sleeptime)
1728	{	2293	{
		2294	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2295
		2296	if (sleeptime > waittime - backend_fudge)
		2297	sleeptime = waittime - backend_fudge;
		2298
		2299	if (expect_true (sleeptime > 0.))
		2300	{
1729	ev_sleep (sleeptime);	2301	ev_sleep (sleeptime);
1730	waittime -= sleeptime;	2302	waittime -= sleeptime;
		2303	}
1731	}	2304	}
1732	}	2305	}
1733		2306
		2307	#if EV_MINIMAL < 2
1734	++loop_count;	2308	++loop_count;
		2309	#endif
		2310	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1735	backend_poll (EV_A_ waittime);	2311	backend_poll (EV_A_ waittime);
		2312	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1736		2313
1737	/* update ev_rt_now, do magic */	2314	/* update ev_rt_now, do magic */
1738	time_update (EV_A_ waittime + sleeptime);	2315	time_update (EV_A_ waittime + sleeptime);
1739	}	2316	}
1740		2317
…		…
1751		2328
1752	/* queue check watchers, to be executed first */	2329	/* queue check watchers, to be executed first */
1753	if (expect_false (checkcnt))	2330	if (expect_false (checkcnt))
1754	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2331	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1755		2332
1756	call_pending (EV_A);	2333	EV_INVOKE_PENDING;
1757	}	2334	}
1758	while (expect_true (	2335	while (expect_true (
1759	activecnt	2336	activecnt
1760	&& !loop_done	2337	&& !loop_done
1761	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2338	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1762	));	2339	));
1763		2340
1764	if (loop_done == EVUNLOOP_ONE)	2341	if (loop_done == EVUNLOOP_ONE)
1765	loop_done = EVUNLOOP_CANCEL;	2342	loop_done = EVUNLOOP_CANCEL;
		2343
		2344	#if EV_MINIMAL < 2
		2345	--loop_depth;
		2346	#endif
1766	}	2347	}
1767		2348
1768	void	2349	void
1769	ev_unloop (EV_P_ int how)	2350	ev_unloop (EV_P_ int how)
1770	{	2351	{
1771	loop_done = how;	2352	loop_done = how;
1772	}	2353	}
1773		2354
		2355	void
		2356	ev_ref (EV_P)
		2357	{
		2358	++activecnt;
		2359	}
		2360
		2361	void
		2362	ev_unref (EV_P)
		2363	{
		2364	--activecnt;
		2365	}
		2366
		2367	void
		2368	ev_now_update (EV_P)
		2369	{
		2370	time_update (EV_A_ 1e100);
		2371	}
		2372
		2373	void
		2374	ev_suspend (EV_P)
		2375	{
		2376	ev_now_update (EV_A);
		2377	}
		2378
		2379	void
		2380	ev_resume (EV_P)
		2381	{
		2382	ev_tstamp mn_prev = mn_now;
		2383
		2384	ev_now_update (EV_A);
		2385	timers_reschedule (EV_A_ mn_now - mn_prev);
		2386	#if EV_PERIODIC_ENABLE
		2387	/* TODO: really do this? */
		2388	periodics_reschedule (EV_A);
		2389	#endif
		2390	}
		2391
1774	/*****************************************************************************/	2392	/*****************************************************************************/
		2393	/* singly-linked list management, used when the expected list length is short */
1775		2394
1776	void inline_size	2395	inline_size void
1777	wlist_add (WL *head, WL elem)	2396	wlist_add (WL *head, WL elem)
1778	{	2397	{
1779	elem->next = *head;	2398	elem->next = *head;
1780	*head = elem;	2399	*head = elem;
1781	}	2400	}
1782		2401
1783	void inline_size	2402	inline_size void
1784	wlist_del (WL *head, WL elem)	2403	wlist_del (WL *head, WL elem)
1785	{	2404	{
1786	while (*head)	2405	while (*head)
1787	{	2406	{
1788	if (*head == elem)	2407	if (expect_true (*head == elem))
1789	{	2408	{
1790	*head = elem->next;	2409	*head = elem->next;
1791	return;	2410	break;
1792	}	2411	}
1793		2412
1794	head = &(*head)->next;	2413	head = &(*head)->next;
1795	}	2414	}
1796	}	2415	}
1797		2416
1798	void inline_speed	2417	/* internal, faster, version of ev_clear_pending */
		2418	inline_speed void
1799	clear_pending (EV_P_ W w)	2419	clear_pending (EV_P_ W w)
1800	{	2420	{
1801	if (w->pending)	2421	if (w->pending)
1802	{	2422	{
1803	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2423	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1804	w->pending = 0;	2424	w->pending = 0;
1805	}	2425	}
1806	}	2426	}
1807		2427
1808	int	2428	int
…		…
1812	int pending = w_->pending;	2432	int pending = w_->pending;
1813		2433
1814	if (expect_true (pending))	2434	if (expect_true (pending))
1815	{	2435	{
1816	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2436	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2437	p->w = (W)&pending_w;
1817	w_->pending = 0;	2438	w_->pending = 0;
1818	p->w = 0;
1819	return p->events;	2439	return p->events;
1820	}	2440	}
1821	else	2441	else
1822	return 0;	2442	return 0;
1823	}	2443	}
1824		2444
1825	void inline_size	2445	inline_size void
1826	pri_adjust (EV_P_ W w)	2446	pri_adjust (EV_P_ W w)
1827	{	2447	{
1828	int pri = w->priority;	2448	int pri = ev_priority (w);
1829	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2449	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1830	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2450	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1831	w->priority = pri;	2451	ev_set_priority (w, pri);
1832	}	2452	}
1833		2453
1834	void inline_speed	2454	inline_speed void
1835	ev_start (EV_P_ W w, int active)	2455	ev_start (EV_P_ W w, int active)
1836	{	2456	{
1837	pri_adjust (EV_A_ w);	2457	pri_adjust (EV_A_ w);
1838	w->active = active;	2458	w->active = active;
1839	ev_ref (EV_A);	2459	ev_ref (EV_A);
1840	}	2460	}
1841		2461
1842	void inline_size	2462	inline_size void
1843	ev_stop (EV_P_ W w)	2463	ev_stop (EV_P_ W w)
1844	{	2464	{
1845	ev_unref (EV_A);	2465	ev_unref (EV_A);
1846	w->active = 0;	2466	w->active = 0;
1847	}	2467	}
…		…
1854	int fd = w->fd;	2474	int fd = w->fd;
1855		2475
1856	if (expect_false (ev_is_active (w)))	2476	if (expect_false (ev_is_active (w)))
1857	return;	2477	return;
1858		2478
1859	assert (("ev_io_start called with negative fd", fd >= 0));	2479	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2480	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2481
		2482	EV_FREQUENT_CHECK;
1860		2483
1861	ev_start (EV_A_ (W)w, 1);	2484	ev_start (EV_A_ (W)w, 1);
1862	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2485	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1863	wlist_add (&anfds[fd].head, (WL)w);	2486	wlist_add (&anfds[fd].head, (WL)w);
1864		2487
1865	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2488	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1866	w->events &= ~EV_IOFDSET;	2489	w->events &= ~EV__IOFDSET;
		2490
		2491	EV_FREQUENT_CHECK;
1867	}	2492	}
1868		2493
1869	void noinline	2494	void noinline
1870	ev_io_stop (EV_P_ ev_io *w)	2495	ev_io_stop (EV_P_ ev_io *w)
1871	{	2496	{
1872	clear_pending (EV_A_ (W)w);	2497	clear_pending (EV_A_ (W)w);
1873	if (expect_false (!ev_is_active (w)))	2498	if (expect_false (!ev_is_active (w)))
1874	return;	2499	return;
1875		2500
1876	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2501	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2502
		2503	EV_FREQUENT_CHECK;
1877		2504
1878	wlist_del (&anfds[w->fd].head, (WL)w);	2505	wlist_del (&anfds[w->fd].head, (WL)w);
1879	ev_stop (EV_A_ (W)w);	2506	ev_stop (EV_A_ (W)w);
1880		2507
1881	fd_change (EV_A_ w->fd, 1);	2508	fd_change (EV_A_ w->fd, 1);
		2509
		2510	EV_FREQUENT_CHECK;
1882	}	2511	}
1883		2512
1884	void noinline	2513	void noinline
1885	ev_timer_start (EV_P_ ev_timer *w)	2514	ev_timer_start (EV_P_ ev_timer *w)
1886	{	2515	{
1887	if (expect_false (ev_is_active (w)))	2516	if (expect_false (ev_is_active (w)))
1888	return;	2517	return;
1889		2518
1890	ev_at (w) += mn_now;	2519	ev_at (w) += mn_now;
1891		2520
1892	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2521	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1893		2522
		2523	EV_FREQUENT_CHECK;
		2524
		2525	++timercnt;
1894	ev_start (EV_A_ (W)w, ++timercnt);	2526	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1895	array_needsize (WT, timers, timermax, timercnt + 1, EMPTY2);	2527	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1896	timers [timercnt] = (WT)w;	2528	ANHE_w (timers [ev_active (w)]) = (WT)w;
		2529	ANHE_at_cache (timers [ev_active (w)]);
1897	upheap (timers, timercnt);	2530	upheap (timers, ev_active (w));
1898		2531
		2532	EV_FREQUENT_CHECK;
		2533
1899	/*assert (("internal timer heap corruption", timers [((W)w)->active] == w));*/	2534	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1900	}	2535	}
1901		2536
1902	void noinline	2537	void noinline
1903	ev_timer_stop (EV_P_ ev_timer *w)	2538	ev_timer_stop (EV_P_ ev_timer *w)
1904	{	2539	{
1905	clear_pending (EV_A_ (W)w);	2540	clear_pending (EV_A_ (W)w);
1906	if (expect_false (!ev_is_active (w)))	2541	if (expect_false (!ev_is_active (w)))
1907	return;	2542	return;
1908		2543
1909	assert (("internal timer heap corruption", timers [((W)w)->active] == (WT)w));	2544	EV_FREQUENT_CHECK;
1910		2545
1911	{	2546	{
1912	int active = ((W)w)->active;	2547	int active = ev_active (w);
1913		2548
		2549	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2550
		2551	--timercnt;
		2552
1914	if (expect_true (active < timercnt))	2553	if (expect_true (active < timercnt + HEAP0))
1915	{	2554	{
1916	timers [active] = timers [timercnt];	2555	timers [active] = timers [timercnt + HEAP0];
1917	adjustheap (timers, timercnt, active);	2556	adjustheap (timers, timercnt, active);
1918	}	2557	}
1919
1920	--timercnt;
1921	}	2558	}
		2559
		2560	EV_FREQUENT_CHECK;
1922		2561
1923	ev_at (w) -= mn_now;	2562	ev_at (w) -= mn_now;
1924		2563
1925	ev_stop (EV_A_ (W)w);	2564	ev_stop (EV_A_ (W)w);
1926	}	2565	}
1927		2566
1928	void noinline	2567	void noinline
1929	ev_timer_again (EV_P_ ev_timer *w)	2568	ev_timer_again (EV_P_ ev_timer *w)
1930	{	2569	{
		2570	EV_FREQUENT_CHECK;
		2571
1931	if (ev_is_active (w))	2572	if (ev_is_active (w))
1932	{	2573	{
1933	if (w->repeat)	2574	if (w->repeat)
1934	{	2575	{
1935	ev_at (w) = mn_now + w->repeat;	2576	ev_at (w) = mn_now + w->repeat;
		2577	ANHE_at_cache (timers [ev_active (w)]);
1936	adjustheap (timers, timercnt, ((W)w)->active);	2578	adjustheap (timers, timercnt, ev_active (w));
1937	}	2579	}
1938	else	2580	else
1939	ev_timer_stop (EV_A_ w);	2581	ev_timer_stop (EV_A_ w);
1940	}	2582	}
1941	else if (w->repeat)	2583	else if (w->repeat)
1942	{	2584	{
1943	w->at = w->repeat;	2585	ev_at (w) = w->repeat;
1944	ev_timer_start (EV_A_ w);	2586	ev_timer_start (EV_A_ w);
1945	}	2587	}
		2588
		2589	EV_FREQUENT_CHECK;
		2590	}
		2591
		2592	ev_tstamp
		2593	ev_timer_remaining (EV_P_ ev_timer *w)
		2594	{
		2595	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1946	}	2596	}
1947		2597
1948	#if EV_PERIODIC_ENABLE	2598	#if EV_PERIODIC_ENABLE
1949	void noinline	2599	void noinline
1950	ev_periodic_start (EV_P_ ev_periodic *w)	2600	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
1954		2604
1955	if (w->reschedule_cb)	2605	if (w->reschedule_cb)
1956	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2606	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1957	else if (w->interval)	2607	else if (w->interval)
1958	{	2608	{
1959	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2609	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1960	/* this formula differs from the one in periodic_reify because we do not always round up */	2610	/* this formula differs from the one in periodic_reify because we do not always round up */
1961	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2611	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1962	}	2612	}
1963	else	2613	else
1964	ev_at (w) = w->offset;	2614	ev_at (w) = w->offset;
1965		2615
		2616	EV_FREQUENT_CHECK;
		2617
		2618	++periodiccnt;
1966	ev_start (EV_A_ (W)w, ++periodiccnt);	2619	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1967	array_needsize (WT, periodics, periodicmax, periodiccnt + 1, EMPTY2);	2620	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1968	periodics [periodiccnt] = (WT)w;	2621	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1969	upheap (periodics, periodiccnt);	2622	ANHE_at_cache (periodics [ev_active (w)]);
		2623	upheap (periodics, ev_active (w));
1970		2624
		2625	EV_FREQUENT_CHECK;
		2626
1971	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2627	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1972	}	2628	}
1973		2629
1974	void noinline	2630	void noinline
1975	ev_periodic_stop (EV_P_ ev_periodic *w)	2631	ev_periodic_stop (EV_P_ ev_periodic *w)
1976	{	2632	{
1977	clear_pending (EV_A_ (W)w);	2633	clear_pending (EV_A_ (W)w);
1978	if (expect_false (!ev_is_active (w)))	2634	if (expect_false (!ev_is_active (w)))
1979	return;	2635	return;
1980		2636
1981	assert (("internal periodic heap corruption", periodics [((W)w)->active] == (WT)w));	2637	EV_FREQUENT_CHECK;
1982		2638
1983	{	2639	{
1984	int active = ((W)w)->active;	2640	int active = ev_active (w);
1985		2641
		2642	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2643
		2644	--periodiccnt;
		2645
1986	if (expect_true (active < periodiccnt))	2646	if (expect_true (active < periodiccnt + HEAP0))
1987	{	2647	{
1988	periodics [active] = periodics [periodiccnt];	2648	periodics [active] = periodics [periodiccnt + HEAP0];
1989	adjustheap (periodics, periodiccnt, active);	2649	adjustheap (periodics, periodiccnt, active);
1990	}	2650	}
1991
1992	--periodiccnt;
1993	}	2651	}
		2652
		2653	EV_FREQUENT_CHECK;
1994		2654
1995	ev_stop (EV_A_ (W)w);	2655	ev_stop (EV_A_ (W)w);
1996	}	2656	}
1997		2657
1998	void noinline	2658	void noinline
…		…
2009	#endif	2669	#endif
2010		2670
2011	void noinline	2671	void noinline
2012	ev_signal_start (EV_P_ ev_signal *w)	2672	ev_signal_start (EV_P_ ev_signal *w)
2013	{	2673	{
2014	#if EV_MULTIPLICITY
2015	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2016	#endif
2017	if (expect_false (ev_is_active (w)))	2674	if (expect_false (ev_is_active (w)))
2018	return;	2675	return;
2019		2676
2020	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2677	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2021		2678
2022	evpipe_init (EV_A);	2679	#if EV_MULTIPLICITY
		2680	assert (("libev: a signal must not be attached to two different loops",
		2681	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2023		2682
		2683	signals [w->signum - 1].loop = EV_A;
		2684	#endif
		2685
		2686	EV_FREQUENT_CHECK;
		2687
		2688	#if EV_USE_SIGNALFD
		2689	if (sigfd == -2)
2024	{	2690	{
2025	#ifndef _WIN32	2691	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2026	sigset_t full, prev;	2692	if (sigfd < 0 && errno == EINVAL)
2027	sigfillset (&full);	2693	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2028	sigprocmask (SIG_SETMASK, &full, &prev);
2029	#endif
2030		2694
2031	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2695	if (sigfd >= 0)
		2696	{
		2697	fd_intern (sigfd); /* doing it twice will not hurt */
2032		2698
2033	#ifndef _WIN32	2699	sigemptyset (&sigfd_set);
2034	sigprocmask (SIG_SETMASK, &prev, 0);	2700
2035	#endif	2701	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2702	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2703	ev_io_start (EV_A_ &sigfd_w);
		2704	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2705	}
2036	}	2706	}
		2707
		2708	if (sigfd >= 0)
		2709	{
		2710	/* TODO: check .head */
		2711	sigaddset (&sigfd_set, w->signum);
		2712	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2713
		2714	signalfd (sigfd, &sigfd_set, 0);
		2715	}
		2716	#endif
2037		2717
2038	ev_start (EV_A_ (W)w, 1);	2718	ev_start (EV_A_ (W)w, 1);
2039	wlist_add (&signals [w->signum - 1].head, (WL)w);	2719	wlist_add (&signals [w->signum - 1].head, (WL)w);
2040		2720
2041	if (!((WL)w)->next)	2721	if (!((WL)w)->next)
		2722	# if EV_USE_SIGNALFD
		2723	if (sigfd < 0) /*TODO*/
		2724	# endif
2042	{	2725	{
2043	#if _WIN32	2726	# if _WIN32
2044	signal (w->signum, ev_sighandler);	2727	signal (w->signum, ev_sighandler);
2045	#else	2728	# else
2046	struct sigaction sa;	2729	struct sigaction sa;
		2730
		2731	evpipe_init (EV_A);
		2732
2047	sa.sa_handler = ev_sighandler;	2733	sa.sa_handler = ev_sighandler;
2048	sigfillset (&sa.sa_mask);	2734	sigfillset (&sa.sa_mask);
2049	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2735	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2050	sigaction (w->signum, &sa, 0);	2736	sigaction (w->signum, &sa, 0);
		2737
		2738	sigemptyset (&sa.sa_mask);
		2739	sigaddset (&sa.sa_mask, w->signum);
		2740	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2051	#endif	2741	#endif
2052	}	2742	}
		2743
		2744	EV_FREQUENT_CHECK;
2053	}	2745	}
2054		2746
2055	void noinline	2747	void noinline
2056	ev_signal_stop (EV_P_ ev_signal *w)	2748	ev_signal_stop (EV_P_ ev_signal *w)
2057	{	2749	{
2058	clear_pending (EV_A_ (W)w);	2750	clear_pending (EV_A_ (W)w);
2059	if (expect_false (!ev_is_active (w)))	2751	if (expect_false (!ev_is_active (w)))
2060	return;	2752	return;
2061		2753
		2754	EV_FREQUENT_CHECK;
		2755
2062	wlist_del (&signals [w->signum - 1].head, (WL)w);	2756	wlist_del (&signals [w->signum - 1].head, (WL)w);
2063	ev_stop (EV_A_ (W)w);	2757	ev_stop (EV_A_ (W)w);
2064		2758
2065	if (!signals [w->signum - 1].head)	2759	if (!signals [w->signum - 1].head)
		2760	{
		2761	#if EV_MULTIPLICITY
		2762	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2763	#endif
		2764	#if EV_USE_SIGNALFD
		2765	if (sigfd >= 0)
		2766	{
		2767	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2768	sigdelset (&sigfd_set, w->signum);
		2769	signalfd (sigfd, &sigfd_set, 0);
		2770	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2771	/*TODO: maybe unblock signal? */
		2772	}
		2773	else
		2774	#endif
2066	signal (w->signum, SIG_DFL);	2775	signal (w->signum, SIG_DFL);
		2776	}
		2777
		2778	EV_FREQUENT_CHECK;
2067	}	2779	}
2068		2780
2069	void	2781	void
2070	ev_child_start (EV_P_ ev_child *w)	2782	ev_child_start (EV_P_ ev_child *w)
2071	{	2783	{
2072	#if EV_MULTIPLICITY	2784	#if EV_MULTIPLICITY
2073	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2785	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2074	#endif	2786	#endif
2075	if (expect_false (ev_is_active (w)))	2787	if (expect_false (ev_is_active (w)))
2076	return;	2788	return;
2077		2789
		2790	EV_FREQUENT_CHECK;
		2791
2078	ev_start (EV_A_ (W)w, 1);	2792	ev_start (EV_A_ (W)w, 1);
2079	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2793	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2794
		2795	EV_FREQUENT_CHECK;
2080	}	2796	}
2081		2797
2082	void	2798	void
2083	ev_child_stop (EV_P_ ev_child *w)	2799	ev_child_stop (EV_P_ ev_child *w)
2084	{	2800	{
2085	clear_pending (EV_A_ (W)w);	2801	clear_pending (EV_A_ (W)w);
2086	if (expect_false (!ev_is_active (w)))	2802	if (expect_false (!ev_is_active (w)))
2087	return;	2803	return;
2088		2804
		2805	EV_FREQUENT_CHECK;
		2806
2089	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2807	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2090	ev_stop (EV_A_ (W)w);	2808	ev_stop (EV_A_ (W)w);
		2809
		2810	EV_FREQUENT_CHECK;
2091	}	2811	}
2092		2812
2093	#if EV_STAT_ENABLE	2813	#if EV_STAT_ENABLE
2094		2814
2095	# ifdef _WIN32	2815	# ifdef _WIN32
2096	# undef lstat	2816	# undef lstat
2097	# define lstat(a,b) _stati64 (a,b)	2817	# define lstat(a,b) _stati64 (a,b)
2098	# endif	2818	# endif
2099		2819
2100	#define DEF_STAT_INTERVAL 5.0074891	2820	#define DEF_STAT_INTERVAL 5.0074891
		2821	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2101	#define MIN_STAT_INTERVAL 0.1074891	2822	#define MIN_STAT_INTERVAL 0.1074891
2102		2823
2103	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2824	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2104		2825
2105	#if EV_USE_INOTIFY	2826	#if EV_USE_INOTIFY
2106	# define EV_INOTIFY_BUFSIZE 8192	2827	# define EV_INOTIFY_BUFSIZE 8192
…		…
2110	{	2831	{
2111	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);	2832	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);
2112		2833
2113	if (w->wd < 0)	2834	if (w->wd < 0)
2114	{	2835	{
		2836	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2115	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2837	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2116		2838
2117	/* monitor some parent directory for speedup hints */	2839	/* monitor some parent directory for speedup hints */
		2840	/* note that exceeding the hardcoded path limit is not a correctness issue, */
		2841	/* but an efficiency issue only */
2118	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2842	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2119	{	2843	{
2120	char path [4096];	2844	char path [4096];
2121	strcpy (path, w->path);	2845	strcpy (path, w->path);
2122		2846
…		…
2125	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2849	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2126	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2850	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2127		2851
2128	char *pend = strrchr (path, '/');	2852	char *pend = strrchr (path, '/');
2129		2853
2130	if (!pend)	2854	if (!pend || pend == path)
2131	break; /* whoops, no '/', complain to your admin */	2855	break;
2132		2856
2133	*pend = 0;	2857	*pend = 0;
2134	w->wd = inotify_add_watch (fs_fd, path, mask);	2858	w->wd = inotify_add_watch (fs_fd, path, mask);
2135	}	2859	}
2136	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2860	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2137	}	2861	}
2138	}	2862	}
2139	else
2140	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2141		2863
2142	if (w->wd >= 0)	2864	if (w->wd >= 0)
		2865	{
		2866	struct statfs sfs;
		2867
2143	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2868	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2869
		2870	/* now local changes will be tracked by inotify, but remote changes won't */
		2871	/* unless the filesystem it known to be local, we therefore still poll */
		2872	/* also do poll on <2.6.25, but with normal frequency */
		2873
		2874	if (fs_2625 && !statfs (w->path, &sfs))
		2875	if (sfs.f_type == 0x1373 /* devfs */
		2876	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2877	|| sfs.f_type == 0x3153464a /* jfs */
		2878	|| sfs.f_type == 0x52654973 /* reiser3 */
		2879	|| sfs.f_type == 0x01021994 /* tempfs */
		2880	|| sfs.f_type == 0x58465342 /* xfs */)
		2881	return;
		2882
		2883	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2884	ev_timer_again (EV_A_ &w->timer);
		2885	}
2144	}	2886	}
2145		2887
2146	static void noinline	2888	static void noinline
2147	infy_del (EV_P_ ev_stat *w)	2889	infy_del (EV_P_ ev_stat *w)
2148	{	2890	{
…		…
2162		2904
2163	static void noinline	2905	static void noinline
2164	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2906	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2165	{	2907	{
2166	if (slot < 0)	2908	if (slot < 0)
2167	/* overflow, need to check for all hahs slots */	2909	/* overflow, need to check for all hash slots */
2168	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2910	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2169	infy_wd (EV_A_ slot, wd, ev);	2911	infy_wd (EV_A_ slot, wd, ev);
2170	else	2912	else
2171	{	2913	{
2172	WL w_;	2914	WL w_;
…		…
2178		2920
2179	if (w->wd == wd || wd == -1)	2921	if (w->wd == wd || wd == -1)
2180	{	2922	{
2181	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2923	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2182	{	2924	{
		2925	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2183	w->wd = -1;	2926	w->wd = -1;
2184	infy_add (EV_A_ w); /* re-add, no matter what */	2927	infy_add (EV_A_ w); /* re-add, no matter what */
2185	}	2928	}
2186		2929
2187	stat_timer_cb (EV_A_ &w->timer, 0);	2930	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2200		2943
2201	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2944	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2202	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2945	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2203	}	2946	}
2204		2947
2205	void inline_size	2948	inline_size void
		2949	check_2625 (EV_P)
		2950	{
		2951	/* kernels < 2.6.25 are borked
		2952	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2953	*/
		2954	struct utsname buf;
		2955	int major, minor, micro;
		2956
		2957	if (uname (&buf))
		2958	return;
		2959
		2960	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2961	return;
		2962
		2963	if (major < 2
		2964	|| (major == 2 && minor < 6)
		2965	|| (major == 2 && minor == 6 && micro < 25))
		2966	return;
		2967
		2968	fs_2625 = 1;
		2969	}
		2970
		2971	inline_size void
2206	infy_init (EV_P)	2972	infy_init (EV_P)
2207	{	2973	{
2208	if (fs_fd != -2)	2974	if (fs_fd != -2)
2209	return;	2975	return;
		2976
		2977	fs_fd = -1;
		2978
		2979	check_2625 (EV_A);
2210		2980
2211	fs_fd = inotify_init ();	2981	fs_fd = inotify_init ();
2212		2982
2213	if (fs_fd >= 0)	2983	if (fs_fd >= 0)
2214	{	2984	{
…		…
2216	ev_set_priority (&fs_w, EV_MAXPRI);	2986	ev_set_priority (&fs_w, EV_MAXPRI);
2217	ev_io_start (EV_A_ &fs_w);	2987	ev_io_start (EV_A_ &fs_w);
2218	}	2988	}
2219	}	2989	}
2220		2990
2221	void inline_size	2991	inline_size void
2222	infy_fork (EV_P)	2992	infy_fork (EV_P)
2223	{	2993	{
2224	int slot;	2994	int slot;
2225		2995
2226	if (fs_fd < 0)	2996	if (fs_fd < 0)
…		…
2242	w->wd = -1;	3012	w->wd = -1;
2243		3013
2244	if (fs_fd >= 0)	3014	if (fs_fd >= 0)
2245	infy_add (EV_A_ w); /* re-add, no matter what */	3015	infy_add (EV_A_ w); /* re-add, no matter what */
2246	else	3016	else
2247	ev_timer_start (EV_A_ &w->timer);	3017	ev_timer_again (EV_A_ &w->timer);
2248	}	3018	}
2249
2250	}	3019	}
2251	}	3020	}
2252		3021
		3022	#endif
		3023
		3024	#ifdef _WIN32
		3025	# define EV_LSTAT(p,b) _stati64 (p, b)
		3026	#else
		3027	# define EV_LSTAT(p,b) lstat (p, b)
2253	#endif	3028	#endif
2254		3029
2255	void	3030	void
2256	ev_stat_stat (EV_P_ ev_stat *w)	3031	ev_stat_stat (EV_P_ ev_stat *w)
2257	{	3032	{
…		…
2284	|| w->prev.st_atime != w->attr.st_atime	3059	|| w->prev.st_atime != w->attr.st_atime
2285	|| w->prev.st_mtime != w->attr.st_mtime	3060	|| w->prev.st_mtime != w->attr.st_mtime
2286	|| w->prev.st_ctime != w->attr.st_ctime	3061	|| w->prev.st_ctime != w->attr.st_ctime
2287	) {	3062	) {
2288	#if EV_USE_INOTIFY	3063	#if EV_USE_INOTIFY
		3064	if (fs_fd >= 0)
		3065	{
2289	infy_del (EV_A_ w);	3066	infy_del (EV_A_ w);
2290	infy_add (EV_A_ w);	3067	infy_add (EV_A_ w);
2291	ev_stat_stat (EV_A_ w); /* avoid race... */	3068	ev_stat_stat (EV_A_ w); /* avoid race... */
		3069	}
2292	#endif	3070	#endif
2293		3071
2294	ev_feed_event (EV_A_ w, EV_STAT);	3072	ev_feed_event (EV_A_ w, EV_STAT);
2295	}	3073	}
2296	}	3074	}
…		…
2299	ev_stat_start (EV_P_ ev_stat *w)	3077	ev_stat_start (EV_P_ ev_stat *w)
2300	{	3078	{
2301	if (expect_false (ev_is_active (w)))	3079	if (expect_false (ev_is_active (w)))
2302	return;	3080	return;
2303		3081
2304	/* since we use memcmp, we need to clear any padding data etc. */
2305	memset (&w->prev, 0, sizeof (ev_statdata));
2306	memset (&w->attr, 0, sizeof (ev_statdata));
2307
2308	ev_stat_stat (EV_A_ w);	3082	ev_stat_stat (EV_A_ w);
2309		3083
		3084	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2310	if (w->interval < MIN_STAT_INTERVAL)	3085	w->interval = MIN_STAT_INTERVAL;
2311	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2312		3086
2313	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3087	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2314	ev_set_priority (&w->timer, ev_priority (w));	3088	ev_set_priority (&w->timer, ev_priority (w));
2315		3089
2316	#if EV_USE_INOTIFY	3090	#if EV_USE_INOTIFY
2317	infy_init (EV_A);	3091	infy_init (EV_A);
2318		3092
2319	if (fs_fd >= 0)	3093	if (fs_fd >= 0)
2320	infy_add (EV_A_ w);	3094	infy_add (EV_A_ w);
2321	else	3095	else
2322	#endif	3096	#endif
2323	ev_timer_start (EV_A_ &w->timer);	3097	ev_timer_again (EV_A_ &w->timer);
2324		3098
2325	ev_start (EV_A_ (W)w, 1);	3099	ev_start (EV_A_ (W)w, 1);
		3100
		3101	EV_FREQUENT_CHECK;
2326	}	3102	}
2327		3103
2328	void	3104	void
2329	ev_stat_stop (EV_P_ ev_stat *w)	3105	ev_stat_stop (EV_P_ ev_stat *w)
2330	{	3106	{
2331	clear_pending (EV_A_ (W)w);	3107	clear_pending (EV_A_ (W)w);
2332	if (expect_false (!ev_is_active (w)))	3108	if (expect_false (!ev_is_active (w)))
2333	return;	3109	return;
2334		3110
		3111	EV_FREQUENT_CHECK;
		3112
2335	#if EV_USE_INOTIFY	3113	#if EV_USE_INOTIFY
2336	infy_del (EV_A_ w);	3114	infy_del (EV_A_ w);
2337	#endif	3115	#endif
2338	ev_timer_stop (EV_A_ &w->timer);	3116	ev_timer_stop (EV_A_ &w->timer);
2339		3117
2340	ev_stop (EV_A_ (W)w);	3118	ev_stop (EV_A_ (W)w);
		3119
		3120	EV_FREQUENT_CHECK;
2341	}	3121	}
2342	#endif	3122	#endif
2343		3123
2344	#if EV_IDLE_ENABLE	3124	#if EV_IDLE_ENABLE
2345	void	3125	void
…		…
2347	{	3127	{
2348	if (expect_false (ev_is_active (w)))	3128	if (expect_false (ev_is_active (w)))
2349	return;	3129	return;
2350		3130
2351	pri_adjust (EV_A_ (W)w);	3131	pri_adjust (EV_A_ (W)w);
		3132
		3133	EV_FREQUENT_CHECK;
2352		3134
2353	{	3135	{
2354	int active = ++idlecnt [ABSPRI (w)];	3136	int active = ++idlecnt [ABSPRI (w)];
2355		3137
2356	++idleall;	3138	++idleall;
2357	ev_start (EV_A_ (W)w, active);	3139	ev_start (EV_A_ (W)w, active);
2358		3140
2359	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	3141	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2360	idles [ABSPRI (w)][active - 1] = w;	3142	idles [ABSPRI (w)][active - 1] = w;
2361	}	3143	}
		3144
		3145	EV_FREQUENT_CHECK;
2362	}	3146	}
2363		3147
2364	void	3148	void
2365	ev_idle_stop (EV_P_ ev_idle *w)	3149	ev_idle_stop (EV_P_ ev_idle *w)
2366	{	3150	{
2367	clear_pending (EV_A_ (W)w);	3151	clear_pending (EV_A_ (W)w);
2368	if (expect_false (!ev_is_active (w)))	3152	if (expect_false (!ev_is_active (w)))
2369	return;	3153	return;
2370		3154
		3155	EV_FREQUENT_CHECK;
		3156
2371	{	3157	{
2372	int active = ((W)w)->active;	3158	int active = ev_active (w);
2373		3159
2374	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3160	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2375	((W)idles [ABSPRI (w)][active - 1])->active = active;	3161	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2376		3162
2377	ev_stop (EV_A_ (W)w);	3163	ev_stop (EV_A_ (W)w);
2378	--idleall;	3164	--idleall;
2379	}	3165	}
		3166
		3167	EV_FREQUENT_CHECK;
2380	}	3168	}
2381	#endif	3169	#endif
2382		3170
2383	void	3171	void
2384	ev_prepare_start (EV_P_ ev_prepare *w)	3172	ev_prepare_start (EV_P_ ev_prepare *w)
2385	{	3173	{
2386	if (expect_false (ev_is_active (w)))	3174	if (expect_false (ev_is_active (w)))
2387	return;	3175	return;
		3176
		3177	EV_FREQUENT_CHECK;
2388		3178
2389	ev_start (EV_A_ (W)w, ++preparecnt);	3179	ev_start (EV_A_ (W)w, ++preparecnt);
2390	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3180	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2391	prepares [preparecnt - 1] = w;	3181	prepares [preparecnt - 1] = w;
		3182
		3183	EV_FREQUENT_CHECK;
2392	}	3184	}
2393		3185
2394	void	3186	void
2395	ev_prepare_stop (EV_P_ ev_prepare *w)	3187	ev_prepare_stop (EV_P_ ev_prepare *w)
2396	{	3188	{
2397	clear_pending (EV_A_ (W)w);	3189	clear_pending (EV_A_ (W)w);
2398	if (expect_false (!ev_is_active (w)))	3190	if (expect_false (!ev_is_active (w)))
2399	return;	3191	return;
2400		3192
		3193	EV_FREQUENT_CHECK;
		3194
2401	{	3195	{
2402	int active = ((W)w)->active;	3196	int active = ev_active (w);
		3197
2403	prepares [active - 1] = prepares [--preparecnt];	3198	prepares [active - 1] = prepares [--preparecnt];
2404	((W)prepares [active - 1])->active = active;	3199	ev_active (prepares [active - 1]) = active;
2405	}	3200	}
2406		3201
2407	ev_stop (EV_A_ (W)w);	3202	ev_stop (EV_A_ (W)w);
		3203
		3204	EV_FREQUENT_CHECK;
2408	}	3205	}
2409		3206
2410	void	3207	void
2411	ev_check_start (EV_P_ ev_check *w)	3208	ev_check_start (EV_P_ ev_check *w)
2412	{	3209	{
2413	if (expect_false (ev_is_active (w)))	3210	if (expect_false (ev_is_active (w)))
2414	return;	3211	return;
		3212
		3213	EV_FREQUENT_CHECK;
2415		3214
2416	ev_start (EV_A_ (W)w, ++checkcnt);	3215	ev_start (EV_A_ (W)w, ++checkcnt);
2417	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3216	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2418	checks [checkcnt - 1] = w;	3217	checks [checkcnt - 1] = w;
		3218
		3219	EV_FREQUENT_CHECK;
2419	}	3220	}
2420		3221
2421	void	3222	void
2422	ev_check_stop (EV_P_ ev_check *w)	3223	ev_check_stop (EV_P_ ev_check *w)
2423	{	3224	{
2424	clear_pending (EV_A_ (W)w);	3225	clear_pending (EV_A_ (W)w);
2425	if (expect_false (!ev_is_active (w)))	3226	if (expect_false (!ev_is_active (w)))
2426	return;	3227	return;
2427		3228
		3229	EV_FREQUENT_CHECK;
		3230
2428	{	3231	{
2429	int active = ((W)w)->active;	3232	int active = ev_active (w);
		3233
2430	checks [active - 1] = checks [--checkcnt];	3234	checks [active - 1] = checks [--checkcnt];
2431	((W)checks [active - 1])->active = active;	3235	ev_active (checks [active - 1]) = active;
2432	}	3236	}
2433		3237
2434	ev_stop (EV_A_ (W)w);	3238	ev_stop (EV_A_ (W)w);
		3239
		3240	EV_FREQUENT_CHECK;
2435	}	3241	}
2436		3242
2437	#if EV_EMBED_ENABLE	3243	#if EV_EMBED_ENABLE
2438	void noinline	3244	void noinline
2439	ev_embed_sweep (EV_P_ ev_embed *w)	3245	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2456	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3262	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2457	{	3263	{
2458	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3264	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2459		3265
2460	{	3266	{
2461	struct ev_loop *loop = w->other;	3267	EV_P = w->other;
2462		3268
2463	while (fdchangecnt)	3269	while (fdchangecnt)
2464	{	3270	{
2465	fd_reify (EV_A);	3271	fd_reify (EV_A);
2466	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3272	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2467	}	3273	}
2468	}	3274	}
2469	}	3275	}
2470		3276
		3277	static void
		3278	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3279	{
		3280	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3281
		3282	ev_embed_stop (EV_A_ w);
		3283
		3284	{
		3285	EV_P = w->other;
		3286
		3287	ev_loop_fork (EV_A);
		3288	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3289	}
		3290
		3291	ev_embed_start (EV_A_ w);
		3292	}
		3293
2471	#if 0	3294	#if 0
2472	static void	3295	static void
2473	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3296	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2474	{	3297	{
2475	ev_idle_stop (EV_A_ idle);	3298	ev_idle_stop (EV_A_ idle);
…		…
2481	{	3304	{
2482	if (expect_false (ev_is_active (w)))	3305	if (expect_false (ev_is_active (w)))
2483	return;	3306	return;
2484		3307
2485	{	3308	{
2486	struct ev_loop *loop = w->other;	3309	EV_P = w->other;
2487	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3310	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2488	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3311	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2489	}	3312	}
		3313
		3314	EV_FREQUENT_CHECK;
2490		3315
2491	ev_set_priority (&w->io, ev_priority (w));	3316	ev_set_priority (&w->io, ev_priority (w));
2492	ev_io_start (EV_A_ &w->io);	3317	ev_io_start (EV_A_ &w->io);
2493		3318
2494	ev_prepare_init (&w->prepare, embed_prepare_cb);	3319	ev_prepare_init (&w->prepare, embed_prepare_cb);
2495	ev_set_priority (&w->prepare, EV_MINPRI);	3320	ev_set_priority (&w->prepare, EV_MINPRI);
2496	ev_prepare_start (EV_A_ &w->prepare);	3321	ev_prepare_start (EV_A_ &w->prepare);
2497		3322
		3323	ev_fork_init (&w->fork, embed_fork_cb);
		3324	ev_fork_start (EV_A_ &w->fork);
		3325
2498	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3326	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2499		3327
2500	ev_start (EV_A_ (W)w, 1);	3328	ev_start (EV_A_ (W)w, 1);
		3329
		3330	EV_FREQUENT_CHECK;
2501	}	3331	}
2502		3332
2503	void	3333	void
2504	ev_embed_stop (EV_P_ ev_embed *w)	3334	ev_embed_stop (EV_P_ ev_embed *w)
2505	{	3335	{
2506	clear_pending (EV_A_ (W)w);	3336	clear_pending (EV_A_ (W)w);
2507	if (expect_false (!ev_is_active (w)))	3337	if (expect_false (!ev_is_active (w)))
2508	return;	3338	return;
2509		3339
		3340	EV_FREQUENT_CHECK;
		3341
2510	ev_io_stop (EV_A_ &w->io);	3342	ev_io_stop (EV_A_ &w->io);
2511	ev_prepare_stop (EV_A_ &w->prepare);	3343	ev_prepare_stop (EV_A_ &w->prepare);
		3344	ev_fork_stop (EV_A_ &w->fork);
2512		3345
2513	ev_stop (EV_A_ (W)w);	3346	EV_FREQUENT_CHECK;
2514	}	3347	}
2515	#endif	3348	#endif
2516		3349
2517	#if EV_FORK_ENABLE	3350	#if EV_FORK_ENABLE
2518	void	3351	void
2519	ev_fork_start (EV_P_ ev_fork *w)	3352	ev_fork_start (EV_P_ ev_fork *w)
2520	{	3353	{
2521	if (expect_false (ev_is_active (w)))	3354	if (expect_false (ev_is_active (w)))
2522	return;	3355	return;
		3356
		3357	EV_FREQUENT_CHECK;
2523		3358
2524	ev_start (EV_A_ (W)w, ++forkcnt);	3359	ev_start (EV_A_ (W)w, ++forkcnt);
2525	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3360	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2526	forks [forkcnt - 1] = w;	3361	forks [forkcnt - 1] = w;
		3362
		3363	EV_FREQUENT_CHECK;
2527	}	3364	}
2528		3365
2529	void	3366	void
2530	ev_fork_stop (EV_P_ ev_fork *w)	3367	ev_fork_stop (EV_P_ ev_fork *w)
2531	{	3368	{
2532	clear_pending (EV_A_ (W)w);	3369	clear_pending (EV_A_ (W)w);
2533	if (expect_false (!ev_is_active (w)))	3370	if (expect_false (!ev_is_active (w)))
2534	return;	3371	return;
2535		3372
		3373	EV_FREQUENT_CHECK;
		3374
2536	{	3375	{
2537	int active = ((W)w)->active;	3376	int active = ev_active (w);
		3377
2538	forks [active - 1] = forks [--forkcnt];	3378	forks [active - 1] = forks [--forkcnt];
2539	((W)forks [active - 1])->active = active;	3379	ev_active (forks [active - 1]) = active;
2540	}	3380	}
2541		3381
2542	ev_stop (EV_A_ (W)w);	3382	ev_stop (EV_A_ (W)w);
		3383
		3384	EV_FREQUENT_CHECK;
2543	}	3385	}
2544	#endif	3386	#endif
2545		3387
2546	#if EV_ASYNC_ENABLE	3388	#if EV_ASYNC_ENABLE
2547	void	3389	void
…		…
2549	{	3391	{
2550	if (expect_false (ev_is_active (w)))	3392	if (expect_false (ev_is_active (w)))
2551	return;	3393	return;
2552		3394
2553	evpipe_init (EV_A);	3395	evpipe_init (EV_A);
		3396
		3397	EV_FREQUENT_CHECK;
2554		3398
2555	ev_start (EV_A_ (W)w, ++asynccnt);	3399	ev_start (EV_A_ (W)w, ++asynccnt);
2556	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3400	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2557	asyncs [asynccnt - 1] = w;	3401	asyncs [asynccnt - 1] = w;
		3402
		3403	EV_FREQUENT_CHECK;
2558	}	3404	}
2559		3405
2560	void	3406	void
2561	ev_async_stop (EV_P_ ev_async *w)	3407	ev_async_stop (EV_P_ ev_async *w)
2562	{	3408	{
2563	clear_pending (EV_A_ (W)w);	3409	clear_pending (EV_A_ (W)w);
2564	if (expect_false (!ev_is_active (w)))	3410	if (expect_false (!ev_is_active (w)))
2565	return;	3411	return;
2566		3412
		3413	EV_FREQUENT_CHECK;
		3414
2567	{	3415	{
2568	int active = ((W)w)->active;	3416	int active = ev_active (w);
		3417
2569	asyncs [active - 1] = asyncs [--asynccnt];	3418	asyncs [active - 1] = asyncs [--asynccnt];
2570	((W)asyncs [active - 1])->active = active;	3419	ev_active (asyncs [active - 1]) = active;
2571	}	3420	}
2572		3421
2573	ev_stop (EV_A_ (W)w);	3422	ev_stop (EV_A_ (W)w);
		3423
		3424	EV_FREQUENT_CHECK;
2574	}	3425	}
2575		3426
2576	void	3427	void
2577	ev_async_send (EV_P_ ev_async *w)	3428	ev_async_send (EV_P_ ev_async *w)
2578	{	3429	{
2579	w->sent = 1;	3430	w->sent = 1;
2580	evpipe_write (EV_A_ &gotasync);	3431	evpipe_write (EV_A_ &async_pending);
2581	}	3432	}
2582	#endif	3433	#endif
2583		3434
2584	/*****************************************************************************/	3435	/*****************************************************************************/
2585		3436
…		…
2595	once_cb (EV_P_ struct ev_once *once, int revents)	3446	once_cb (EV_P_ struct ev_once *once, int revents)
2596	{	3447	{
2597	void (*cb)(int revents, void *arg) = once->cb;	3448	void (*cb)(int revents, void *arg) = once->cb;
2598	void *arg = once->arg;	3449	void *arg = once->arg;
2599		3450
2600	ev_io_stop (EV_A_ &once->io);	3451	ev_io_stop (EV_A_ &once->io);
2601	ev_timer_stop (EV_A_ &once->to);	3452	ev_timer_stop (EV_A_ &once->to);
2602	ev_free (once);	3453	ev_free (once);
2603		3454
2604	cb (revents, arg);	3455	cb (revents, arg);
2605	}	3456	}
2606		3457
2607	static void	3458	static void
2608	once_cb_io (EV_P_ ev_io *w, int revents)	3459	once_cb_io (EV_P_ ev_io *w, int revents)
2609	{	3460	{
2610	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3461	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3462
		3463	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2611	}	3464	}
2612		3465
2613	static void	3466	static void
2614	once_cb_to (EV_P_ ev_timer *w, int revents)	3467	once_cb_to (EV_P_ ev_timer *w, int revents)
2615	{	3468	{
2616	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3469	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3470
		3471	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2617	}	3472	}
2618		3473
2619	void	3474	void
2620	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3475	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2621	{	3476	{
…		…
2643	ev_timer_set (&once->to, timeout, 0.);	3498	ev_timer_set (&once->to, timeout, 0.);
2644	ev_timer_start (EV_A_ &once->to);	3499	ev_timer_start (EV_A_ &once->to);
2645	}	3500	}
2646	}	3501	}
2647		3502
		3503	/*****************************************************************************/
		3504
		3505	#if EV_WALK_ENABLE
		3506	void
		3507	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3508	{
		3509	int i, j;
		3510	ev_watcher_list *wl, *wn;
		3511
		3512	if (types & (EV_IO | EV_EMBED))
		3513	for (i = 0; i < anfdmax; ++i)
		3514	for (wl = anfds [i].head; wl; )
		3515	{
		3516	wn = wl->next;
		3517
		3518	#if EV_EMBED_ENABLE
		3519	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3520	{
		3521	if (types & EV_EMBED)
		3522	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3523	}
		3524	else
		3525	#endif
		3526	#if EV_USE_INOTIFY
		3527	if (ev_cb ((ev_io *)wl) == infy_cb)
		3528	;
		3529	else
		3530	#endif
		3531	if ((ev_io *)wl != &pipe_w)
		3532	if (types & EV_IO)
		3533	cb (EV_A_ EV_IO, wl);
		3534
		3535	wl = wn;
		3536	}
		3537
		3538	if (types & (EV_TIMER | EV_STAT))
		3539	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3540	#if EV_STAT_ENABLE
		3541	/*TODO: timer is not always active*/
		3542	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3543	{
		3544	if (types & EV_STAT)
		3545	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3546	}
		3547	else
		3548	#endif
		3549	if (types & EV_TIMER)
		3550	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3551
		3552	#if EV_PERIODIC_ENABLE
		3553	if (types & EV_PERIODIC)
		3554	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3555	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3556	#endif
		3557
		3558	#if EV_IDLE_ENABLE
		3559	if (types & EV_IDLE)
		3560	for (j = NUMPRI; i--; )
		3561	for (i = idlecnt [j]; i--; )
		3562	cb (EV_A_ EV_IDLE, idles [j][i]);
		3563	#endif
		3564
		3565	#if EV_FORK_ENABLE
		3566	if (types & EV_FORK)
		3567	for (i = forkcnt; i--; )
		3568	if (ev_cb (forks [i]) != embed_fork_cb)
		3569	cb (EV_A_ EV_FORK, forks [i]);
		3570	#endif
		3571
		3572	#if EV_ASYNC_ENABLE
		3573	if (types & EV_ASYNC)
		3574	for (i = asynccnt; i--; )
		3575	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3576	#endif
		3577
		3578	if (types & EV_PREPARE)
		3579	for (i = preparecnt; i--; )
		3580	#if EV_EMBED_ENABLE
		3581	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3582	#endif
		3583	cb (EV_A_ EV_PREPARE, prepares [i]);
		3584
		3585	if (types & EV_CHECK)
		3586	for (i = checkcnt; i--; )
		3587	cb (EV_A_ EV_CHECK, checks [i]);
		3588
		3589	if (types & EV_SIGNAL)
		3590	for (i = 0; i < EV_NSIG - 1; ++i)
		3591	for (wl = signals [i].head; wl; )
		3592	{
		3593	wn = wl->next;
		3594	cb (EV_A_ EV_SIGNAL, wl);
		3595	wl = wn;
		3596	}
		3597
		3598	if (types & EV_CHILD)
		3599	for (i = EV_PID_HASHSIZE; i--; )
		3600	for (wl = childs [i]; wl; )
		3601	{
		3602	wn = wl->next;
		3603	cb (EV_A_ EV_CHILD, wl);
		3604	wl = wn;
		3605	}
		3606	/* EV_STAT 0x00001000 /* stat data changed */
		3607	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3608	}
		3609	#endif
		3610
2648	#if EV_MULTIPLICITY	3611	#if EV_MULTIPLICITY
2649	#include "ev_wrap.h"	3612	#include "ev_wrap.h"
2650	#endif	3613	#endif
2651		3614
2652	#ifdef __cplusplus	3615	#ifdef __cplusplus

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