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Comparing libev/ev.c (file contents):
Revision 1.243 by root, Fri May 9 15:52:13 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
240	#ifndef EV_USE_4HEAP	324	#ifndef EV_USE_4HEAP
241	# define EV_USE_4HEAP !EV_MINIMAL	325	# define EV_USE_4HEAP !EV_MINIMAL
242	#endif	326	#endif
243		327
244	#ifndef EV_HEAP_CACHE_AT	328	#ifndef EV_HEAP_CACHE_AT
245	# define EV_HEAP_CACHE_AT !EV_MINIMAL	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
246	#endif	344	#endif
247		345
248	/* 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 */
249		347
250	#ifndef CLOCK_MONOTONIC	348	#ifndef CLOCK_MONOTONIC
…		…
267	# include <sys/select.h>	365	# include <sys/select.h>
268	# endif	366	# endif
269	#endif	367	#endif
270		368
271	#if EV_USE_INOTIFY	369	#if EV_USE_INOTIFY
		370	# include <sys/utsname.h>
		371	# include <sys/statfs.h>
272	# 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
273	#endif	378	#endif
274		379
275	#if EV_SELECT_IS_WINSOCKET	380	#if EV_SELECT_IS_WINSOCKET
276	# include <winsock.h>	381	# include <winsock.h>
277	#endif	382	#endif
278		383
279	#if EV_USE_EVENTFD	384	#if EV_USE_EVENTFD
280	/* 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 */
281	# 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
282	# ifdef __cplusplus	397	# ifdef __cplusplus
283	extern "C" {	398	extern "C" {
284	# endif	399	# endif
285	int eventfd (unsigned int initval, int flags);	400	int eventfd (unsigned int initval, int flags);
286	# ifdef __cplusplus	401	# ifdef __cplusplus
287	}	402	}
288	# endif	403	# endif
289	#endif	404	#endif
290		405
		406	#if EV_USE_SIGNALFD
		407	# include <sys/signalfd.h>
		408	#endif
		409
291	/**/	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
292		417
293	/*	418	/*
294	* This is used to avoid floating point rounding problems.	419	* This is used to avoid floating point rounding problems.
295	* It is added to ev_rt_now when scheduling periodics	420	* It is added to ev_rt_now when scheduling periodics
296	* to ensure progress, time-wise, even when rounding	421	* to ensure progress, time-wise, even when rounding
…		…
323	# define inline_speed static noinline	448	# define inline_speed static noinline
324	#else	449	#else
325	# define inline_speed static inline	450	# define inline_speed static inline
326	#endif	451	#endif
327		452
328	#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
329	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	458	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		459	#endif
330		460
331	#define EMPTY /* required for microsofts broken pseudo-c compiler */	461	#define EMPTY /* required for microsofts broken pseudo-c compiler */
332	#define EMPTY2(a,b) /* used to suppress some warnings */	462	#define EMPTY2(a,b) /* used to suppress some warnings */
333		463
334	typedef ev_watcher *W;	464	typedef ev_watcher *W;
…		…
336	typedef ev_watcher_time *WT;	466	typedef ev_watcher_time *WT;
337		467
338	#define ev_active(w) ((W)(w))->active	468	#define ev_active(w) ((W)(w))->active
339	#define ev_at(w) ((WT)(w))->at	469	#define ev_at(w) ((WT)(w))->at
340		470
341	#if EV_USE_MONOTONIC	471	#if EV_USE_REALTIME
342	/* 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 */
343	/* 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
344	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? */
345	#endif	479	#endif
346		480
347	#ifdef _WIN32	481	#ifdef _WIN32
348	# include "ev_win32.c"	482	# include "ev_win32.c"
…		…
357	{	491	{
358	syserr_cb = cb;	492	syserr_cb = cb;
359	}	493	}
360		494
361	static void noinline	495	static void noinline
362	syserr (const char *msg)	496	ev_syserr (const char *msg)
363	{	497	{
364	if (!msg)	498	if (!msg)
365	msg = "(libev) system error";	499	msg = "(libev) system error";
366		500
367	if (syserr_cb)	501	if (syserr_cb)
…		…
413	#define ev_malloc(size) ev_realloc (0, (size))	547	#define ev_malloc(size) ev_realloc (0, (size))
414	#define ev_free(ptr) ev_realloc ((ptr), 0)	548	#define ev_free(ptr) ev_realloc ((ptr), 0)
415		549
416	/*****************************************************************************/	550	/*****************************************************************************/
417		551
		552	/* set in reify when reification needed */
		553	#define EV_ANFD_REIFY 1
		554
		555	/* file descriptor info structure */
418	typedef struct	556	typedef struct
419	{	557	{
420	WL head;	558	WL head;
421	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 */
422	unsigned char reify;	562	unsigned char unused;
		563	#if EV_USE_EPOLL
		564	unsigned int egen; /* generation counter to counter epoll bugs */
		565	#endif
423	#if EV_SELECT_IS_WINSOCKET	566	#if EV_SELECT_IS_WINSOCKET
424	SOCKET handle;	567	SOCKET handle;
425	#endif	568	#endif
426	} ANFD;	569	} ANFD;
427		570
		571	/* stores the pending event set for a given watcher */
428	typedef struct	572	typedef struct
429	{	573	{
430	W w;	574	W w;
431	int events;	575	int events; /* the pending event set for the given watcher */
432	} ANPENDING;	576	} ANPENDING;
433		577
434	#if EV_USE_INOTIFY	578	#if EV_USE_INOTIFY
435	/* hash table entry per inotify-id */	579	/* hash table entry per inotify-id */
436	typedef struct	580	typedef struct
…		…
439	} ANFS;	583	} ANFS;
440	#endif	584	#endif
441		585
442	/* Heap Entry */	586	/* Heap Entry */
443	#if EV_HEAP_CACHE_AT	587	#if EV_HEAP_CACHE_AT
		588	/* a heap element */
444	typedef struct {	589	typedef struct {
445	ev_tstamp at;	590	ev_tstamp at;
446	WT w;	591	WT w;
447	} ANHE;	592	} ANHE;
448		593
449	#define ANHE_w(he) (he).w /* access watcher, read-write */	594	#define ANHE_w(he) (he).w /* access watcher, read-write */
450	#define ANHE_at(he) (he).at /* access cached at, read-only */	595	#define ANHE_at(he) (he).at /* access cached at, read-only */
451	#define ANHE_at_set(he) (he).at = (he).w->at /* update at from watcher */	596	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
452	#else	597	#else
		598	/* a heap element */
453	typedef WT ANHE;	599	typedef WT ANHE;
454		600
455	#define ANHE_w(he) (he)	601	#define ANHE_w(he) (he)
456	#define ANHE_at(he) (he)->at	602	#define ANHE_at(he) (he)->at
457	#define ANHE_at_set(he)	603	#define ANHE_at_cache(he)
458	#endif	604	#endif
459		605
460	#if EV_MULTIPLICITY	606	#if EV_MULTIPLICITY
461		607
462	struct ev_loop	608	struct ev_loop
…		…
481		627
482	static int ev_default_loop_ptr;	628	static int ev_default_loop_ptr;
483		629
484	#endif	630	#endif
485		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
486	/*****************************************************************************/	644	/*****************************************************************************/
487		645
		646	#ifndef EV_HAVE_EV_TIME
488	ev_tstamp	647	ev_tstamp
489	ev_time (void)	648	ev_time (void)
490	{	649	{
491	#if EV_USE_REALTIME	650	#if EV_USE_REALTIME
		651	if (expect_true (have_realtime))
		652	{
492	struct timespec ts;	653	struct timespec ts;
493	clock_gettime (CLOCK_REALTIME, &ts);	654	clock_gettime (CLOCK_REALTIME, &ts);
494	return ts.tv_sec + ts.tv_nsec * 1e-9;	655	return ts.tv_sec + ts.tv_nsec * 1e-9;
495	#else	656	}
		657	#endif
		658
496	struct timeval tv;	659	struct timeval tv;
497	gettimeofday (&tv, 0);	660	gettimeofday (&tv, 0);
498	return tv.tv_sec + tv.tv_usec * 1e-6;	661	return tv.tv_sec + tv.tv_usec * 1e-6;
499	#endif
500	}	662	}
		663	#endif
501		664
502	ev_tstamp inline_size	665	inline_size ev_tstamp
503	get_clock (void)	666	get_clock (void)
504	{	667	{
505	#if EV_USE_MONOTONIC	668	#if EV_USE_MONOTONIC
506	if (expect_true (have_monotonic))	669	if (expect_true (have_monotonic))
507	{	670	{
…		…
540	struct timeval tv;	703	struct timeval tv;
541		704
542	tv.tv_sec = (time_t)delay;	705	tv.tv_sec = (time_t)delay;
543	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	706	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
544		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 */
545	select (0, 0, 0, 0, &tv);	711	select (0, 0, 0, 0, &tv);
546	#endif	712	#endif
547	}	713	}
548	}	714	}
549		715
550	/*****************************************************************************/	716	/*****************************************************************************/
551		717
552	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	718	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
553		719
554	int inline_size	720	/* find a suitable new size for the given array, */
		721	/* hopefully by rounding to a ncie-to-malloc size */
		722	inline_size int
555	array_nextsize (int elem, int cur, int cnt)	723	array_nextsize (int elem, int cur, int cnt)
556	{	724	{
557	int ncur = cur + 1;	725	int ncur = cur + 1;
558		726
559	do	727	do
…		…
576	array_realloc (int elem, void *base, int *cur, int cnt)	744	array_realloc (int elem, void *base, int *cur, int cnt)
577	{	745	{
578	*cur = array_nextsize (elem, *cur, cnt);	746	*cur = array_nextsize (elem, *cur, cnt);
579	return ev_realloc (base, elem * *cur);	747	return ev_realloc (base, elem * *cur);
580	}	748	}
		749
		750	#define array_init_zero(base,count) \
		751	memset ((void *)(base), 0, sizeof (*(base)) * (count))
581		752
582	#define array_needsize(type,base,cur,cnt,init) \	753	#define array_needsize(type,base,cur,cnt,init) \
583	if (expect_false ((cnt) > (cur))) \	754	if (expect_false ((cnt) > (cur))) \
584	{ \	755	{ \
585	int ocur_ = (cur); \	756	int ocur_ = (cur); \
…		…
597	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	768	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
598	}	769	}
599	#endif	770	#endif
600		771
601	#define array_free(stem, idx) \	772	#define array_free(stem, idx) \
602	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
603		774
604	/*****************************************************************************/	775	/*****************************************************************************/
		776
		777	/* dummy callback for pending events */
		778	static void noinline
		779	pendingcb (EV_P_ ev_prepare *w, int revents)
		780	{
		781	}
605		782
606	void noinline	783	void noinline
607	ev_feed_event (EV_P_ void *w, int revents)	784	ev_feed_event (EV_P_ void *w, int revents)
608	{	785	{
609	W w_ = (W)w;	786	W w_ = (W)w;
…		…
618	pendings [pri][w_->pending - 1].w = w_;	795	pendings [pri][w_->pending - 1].w = w_;
619	pendings [pri][w_->pending - 1].events = revents;	796	pendings [pri][w_->pending - 1].events = revents;
620	}	797	}
621	}	798	}
622		799
623	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
624	queue_events (EV_P_ W *events, int eventcnt, int type)	816	queue_events (EV_P_ W *events, int eventcnt, int type)
625	{	817	{
626	int i;	818	int i;
627		819
628	for (i = 0; i < eventcnt; ++i)	820	for (i = 0; i < eventcnt; ++i)
629	ev_feed_event (EV_A_ events [i], type);	821	ev_feed_event (EV_A_ events [i], type);
630	}	822	}
631		823
632	/*****************************************************************************/	824	/*****************************************************************************/
633		825
634	void inline_size	826	inline_speed void
635	anfds_init (ANFD *base, int count)
636	{
637	while (count--)
638	{
639	base->head = 0;
640	base->events = EV_NONE;
641	base->reify = 0;
642
643	++base;
644	}
645	}
646
647	void inline_speed
648	fd_event (EV_P_ int fd, int revents)	827	fd_event_nc (EV_P_ int fd, int revents)
649	{	828	{
650	ANFD *anfd = anfds + fd;	829	ANFD *anfd = anfds + fd;
651	ev_io *w;	830	ev_io *w;
652		831
653	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)
…		…
657	if (ev)	836	if (ev)
658	ev_feed_event (EV_A_ (W)w, ev);	837	ev_feed_event (EV_A_ (W)w, ev);
659	}	838	}
660	}	839	}
661		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
662	void	852	void
663	ev_feed_fd_event (EV_P_ int fd, int revents)	853	ev_feed_fd_event (EV_P_ int fd, int revents)
664	{	854	{
665	if (fd >= 0 && fd < anfdmax)	855	if (fd >= 0 && fd < anfdmax)
666	fd_event (EV_A_ fd, revents);	856	fd_event_nc (EV_A_ fd, revents);
667	}	857	}
668		858
669	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
670	fd_reify (EV_P)	862	fd_reify (EV_P)
671	{	863	{
672	int i;	864	int i;
673		865
674	for (i = 0; i < fdchangecnt; ++i)	866	for (i = 0; i < fdchangecnt; ++i)
…		…
683	events |= (unsigned char)w->events;	875	events |= (unsigned char)w->events;
684		876
685	#if EV_SELECT_IS_WINSOCKET	877	#if EV_SELECT_IS_WINSOCKET
686	if (events)	878	if (events)
687	{	879	{
688	unsigned long argp;	880	unsigned long arg;
689	#ifdef EV_FD_TO_WIN32_HANDLE	881	#ifdef EV_FD_TO_WIN32_HANDLE
690	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	882	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
691	#else	883	#else
692	anfd->handle = _get_osfhandle (fd);	884	anfd->handle = _get_osfhandle (fd);
693	#endif	885	#endif
694	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));
695	}	887	}
696	#endif	888	#endif
697		889
698	{	890	{
699	unsigned char o_events = anfd->events;	891	unsigned char o_events = anfd->events;
700	unsigned char o_reify = anfd->reify;	892	unsigned char o_reify = anfd->reify;
701		893
702	anfd->reify = 0;	894	anfd->reify = 0;
703	anfd->events = events;	895	anfd->events = events;
704		896
705	if (o_events != events || o_reify & EV_IOFDSET)	897	if (o_events != events || o_reify & EV__IOFDSET)
706	backend_modify (EV_A_ fd, o_events, events);	898	backend_modify (EV_A_ fd, o_events, events);
707	}	899	}
708	}	900	}
709		901
710	fdchangecnt = 0;	902	fdchangecnt = 0;
711	}	903	}
712		904
713	void inline_size	905	/* something about the given fd changed */
		906	inline_size void
714	fd_change (EV_P_ int fd, int flags)	907	fd_change (EV_P_ int fd, int flags)
715	{	908	{
716	unsigned char reify = anfds [fd].reify;	909	unsigned char reify = anfds [fd].reify;
717	anfds [fd].reify |= flags;	910	anfds [fd].reify |= flags;
718		911
…		…
722	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	915	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
723	fdchanges [fdchangecnt - 1] = fd;	916	fdchanges [fdchangecnt - 1] = fd;
724	}	917	}
725	}	918	}
726		919
727	void inline_speed	920	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		921	inline_speed void
728	fd_kill (EV_P_ int fd)	922	fd_kill (EV_P_ int fd)
729	{	923	{
730	ev_io *w;	924	ev_io *w;
731		925
732	while ((w = (ev_io *)anfds [fd].head))	926	while ((w = (ev_io *)anfds [fd].head))
…		…
734	ev_io_stop (EV_A_ w);	928	ev_io_stop (EV_A_ w);
735	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);
736	}	930	}
737	}	931	}
738		932
739	int inline_size	933	/* check whether the given fd is atcually valid, for error recovery */
		934	inline_size int
740	fd_valid (int fd)	935	fd_valid (int fd)
741	{	936	{
742	#ifdef _WIN32	937	#ifdef _WIN32
743	return _get_osfhandle (fd) != -1;	938	return _get_osfhandle (fd) != -1;
744	#else	939	#else
…		…
752	{	947	{
753	int fd;	948	int fd;
754		949
755	for (fd = 0; fd < anfdmax; ++fd)	950	for (fd = 0; fd < anfdmax; ++fd)
756	if (anfds [fd].events)	951	if (anfds [fd].events)
757	if (!fd_valid (fd) == -1 && errno == EBADF)	952	if (!fd_valid (fd) && errno == EBADF)
758	fd_kill (EV_A_ fd);	953	fd_kill (EV_A_ fd);
759	}	954	}
760		955
761	/* 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 */
762	static void noinline	957	static void noinline
…		…
766		961
767	for (fd = anfdmax; fd--; )	962	for (fd = anfdmax; fd--; )
768	if (anfds [fd].events)	963	if (anfds [fd].events)
769	{	964	{
770	fd_kill (EV_A_ fd);	965	fd_kill (EV_A_ fd);
771	return;	966	break;
772	}	967	}
773	}	968	}
774		969
775	/* 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 */
776	static void noinline	971	static void noinline
…		…
780		975
781	for (fd = 0; fd < anfdmax; ++fd)	976	for (fd = 0; fd < anfdmax; ++fd)
782	if (anfds [fd].events)	977	if (anfds [fd].events)
783	{	978	{
784	anfds [fd].events = 0;	979	anfds [fd].events = 0;
		980	anfds [fd].emask = 0;
785	fd_change (EV_A_ fd, EV_IOFDSET | 1);	981	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
786	}	982	}
787	}	983	}
788		984
789	/*****************************************************************************/	985	/*****************************************************************************/
790		986
…		…
802	*/	998	*/
803	#if EV_USE_4HEAP	999	#if EV_USE_4HEAP
804		1000
805	#define DHEAP 4	1001	#define DHEAP 4
806	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	1002	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
807		1003	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
808	/* towards the root */	1004	#define UPHEAP_DONE(p,k) ((p) == (k))
809	void inline_speed
810	upheap (ANHE *heap, int k)
811	{
812	ANHE he = heap [k];
813
814	for (;;)
815	{
816	int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
817
818	if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
819	break;
820
821	heap [k] = heap [p];
822	ev_active (ANHE_w (heap [k])) = k;
823	k = p;
824	}
825
826	ev_active (ANHE_w (he)) = k;
827	heap [k] = he;
828	}
829		1005
830	/* away from the root */	1006	/* away from the root */
831	void inline_speed	1007	inline_speed void
832	downheap (ANHE *heap, int N, int k)	1008	downheap (ANHE *heap, int N, int k)
833	{	1009	{
834	ANHE he = heap [k];	1010	ANHE he = heap [k];
835	ANHE *E = heap + N + HEAP0;	1011	ANHE *E = heap + N + HEAP0;
836		1012
837	for (;;)	1013	for (;;)
838	{	1014	{
839	ev_tstamp minat;	1015	ev_tstamp minat;
840	ANHE *minpos;	1016	ANHE *minpos;
841	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0;	1017	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
842		1018
843	// find minimum child	1019	/* find minimum child */
844	if (expect_true (pos + DHEAP - 1 < E))	1020	if (expect_true (pos + DHEAP - 1 < E))
845	{	1021	{
846	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));	1022	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
847	if (ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));	1023	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
848	if (ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));	1024	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
849	if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));	1025	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
850	}	1026	}
851	else if (pos < E)	1027	else if (pos < E)
852	{	1028	{
853	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));	1029	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
854	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));	1030	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
…		…
859	break;	1035	break;
860		1036
861	if (ANHE_at (he) <= minat)	1037	if (ANHE_at (he) <= minat)
862	break;	1038	break;
863		1039
		1040	heap [k] = *minpos;
864	ev_active (ANHE_w (*minpos)) = k;	1041	ev_active (ANHE_w (*minpos)) = k;
865	heap [k] = *minpos;
866		1042
867	k = minpos - heap;	1043	k = minpos - heap;
868	}	1044	}
869		1045
		1046	heap [k] = he;
870	ev_active (ANHE_w (he)) = k;	1047	ev_active (ANHE_w (he)) = k;
871	heap [k] = he;
872	}	1048	}
873		1049
874	#else // 4HEAP	1050	#else /* 4HEAP */
875		1051
876	#define HEAP0 1	1052	#define HEAP0 1
		1053	#define HPARENT(k) ((k) >> 1)
		1054	#define UPHEAP_DONE(p,k) (!(p))
877		1055
878	/* towards the root */	1056	/* away from the root */
879	void inline_speed	1057	inline_speed void
880	upheap (ANHE *heap, int k)	1058	downheap (ANHE *heap, int N, int k)
881	{	1059	{
882	ANHE he = heap [k];	1060	ANHE he = heap [k];
883		1061
884	for (;;)	1062	for (;;)
885	{	1063	{
886	int p = k >> 1;	1064	int c = k << 1;
887		1065
888	/* maybe we could use a dummy element at heap [0]? */	1066	if (c >= N + HEAP0)
889	if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
890	break;	1067	break;
891		1068
892	heap [k] = heap [p];
893	ev_active (ANHE_w (heap [k])) = k;
894	k = p;
895	}
896
897	heap [k] = he;
898	ev_active (ANHE_w (heap [k])) = k;
899	}
900
901	/* away from the root */
902	void inline_speed
903	downheap (ANHE *heap, int N, int k)
904	{
905	ANHE he = heap [k];
906
907	for (;;)
908	{
909	int c = k << 1;
910
911	if (c > N)
912	break;
913
914	c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1069	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
915	? 1 : 0;	1070	? 1 : 0;
916		1071
917	if (ANHE_at (he) <= ANHE_at (heap [c]))	1072	if (ANHE_at (he) <= ANHE_at (heap [c]))
918	break;	1073	break;
919		1074
…		…
926	heap [k] = he;	1081	heap [k] = he;
927	ev_active (ANHE_w (he)) = k;	1082	ev_active (ANHE_w (he)) = k;
928	}	1083	}
929	#endif	1084	#endif
930		1085
931	void inline_size	1086	/* towards the root */
		1087	inline_speed void
		1088	upheap (ANHE *heap, int k)
		1089	{
		1090	ANHE he = heap [k];
		1091
		1092	for (;;)
		1093	{
		1094	int p = HPARENT (k);
		1095
		1096	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1097	break;
		1098
		1099	heap [k] = heap [p];
		1100	ev_active (ANHE_w (heap [k])) = k;
		1101	k = p;
		1102	}
		1103
		1104	heap [k] = he;
		1105	ev_active (ANHE_w (he)) = k;
		1106	}
		1107
		1108	/* move an element suitably so it is in a correct place */
		1109	inline_size void
932	adjustheap (ANHE *heap, int N, int k)	1110	adjustheap (ANHE *heap, int N, int k)
933	{	1111	{
		1112	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
934	upheap (heap, k);	1113	upheap (heap, k);
		1114	else
935	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);
936	}	1128	}
937		1129
938	/*****************************************************************************/	1130	/*****************************************************************************/
939		1131
		1132	/* associate signal watchers to a signal signal */
940	typedef struct	1133	typedef struct
941	{	1134	{
		1135	EV_ATOMIC_T pending;
		1136	#if EV_MULTIPLICITY
		1137	EV_P;
		1138	#endif
942	WL head;	1139	WL head;
943	EV_ATOMIC_T gotsig;
944	} ANSIG;	1140	} ANSIG;
945		1141
946	static ANSIG *signals;	1142	static ANSIG signals [EV_NSIG - 1];
947	static int signalmax;
948
949	static EV_ATOMIC_T gotsig;
950
951	void inline_size
952	signals_init (ANSIG *base, int count)
953	{
954	while (count--)
955	{
956	base->head = 0;
957	base->gotsig = 0;
958
959	++base;
960	}
961	}
962		1143
963	/*****************************************************************************/	1144	/*****************************************************************************/
964		1145
965	void inline_speed	1146	/* used to prepare libev internal fd's */
		1147	/* this is not fork-safe */
		1148	inline_speed void
966	fd_intern (int fd)	1149	fd_intern (int fd)
967	{	1150	{
968	#ifdef _WIN32	1151	#ifdef _WIN32
969	int arg = 1;	1152	unsigned long arg = 1;
970	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1153	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
971	#else	1154	#else
972	fcntl (fd, F_SETFD, FD_CLOEXEC);	1155	fcntl (fd, F_SETFD, FD_CLOEXEC);
973	fcntl (fd, F_SETFL, O_NONBLOCK);	1156	fcntl (fd, F_SETFL, O_NONBLOCK);
974	#endif	1157	#endif
975	}	1158	}
976		1159
977	static void noinline	1160	static void noinline
978	evpipe_init (EV_P)	1161	evpipe_init (EV_P)
979	{	1162	{
980	if (!ev_is_active (&pipeev))	1163	if (!ev_is_active (&pipe_w))
981	{	1164	{
982	#if EV_USE_EVENTFD	1165	#if EV_USE_EVENTFD
		1166	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1167	if (evfd < 0 && errno == EINVAL)
983	if ((evfd = eventfd (0, 0)) >= 0)	1168	evfd = eventfd (0, 0);
		1169
		1170	if (evfd >= 0)
984	{	1171	{
985	evpipe [0] = -1;	1172	evpipe [0] = -1;
986	fd_intern (evfd);	1173	fd_intern (evfd); /* doing it twice doesn't hurt */
987	ev_io_set (&pipeev, evfd, EV_READ);	1174	ev_io_set (&pipe_w, evfd, EV_READ);
988	}	1175	}
989	else	1176	else
990	#endif	1177	#endif
991	{	1178	{
992	while (pipe (evpipe))	1179	while (pipe (evpipe))
993	syserr ("(libev) error creating signal/async pipe");	1180	ev_syserr ("(libev) error creating signal/async pipe");
994		1181
995	fd_intern (evpipe [0]);	1182	fd_intern (evpipe [0]);
996	fd_intern (evpipe [1]);	1183	fd_intern (evpipe [1]);
997	ev_io_set (&pipeev, evpipe [0], EV_READ);	1184	ev_io_set (&pipe_w, evpipe [0], EV_READ);
998	}	1185	}
999		1186
1000	ev_io_start (EV_A_ &pipeev);	1187	ev_io_start (EV_A_ &pipe_w);
1001	ev_unref (EV_A); /* watcher should not keep loop alive */	1188	ev_unref (EV_A); /* watcher should not keep loop alive */
1002	}	1189	}
1003	}	1190	}
1004		1191
1005	void inline_size	1192	inline_size void
1006	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1193	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1007	{	1194	{
1008	if (!*flag)	1195	if (!*flag)
1009	{	1196	{
1010	int old_errno = errno; /* save errno because write might clobber it */	1197	int old_errno = errno; /* save errno because write might clobber it */
…		…
1023		1210
1024	errno = old_errno;	1211	errno = old_errno;
1025	}	1212	}
1026	}	1213	}
1027		1214
		1215	/* called whenever the libev signal pipe */
		1216	/* got some events (signal, async) */
1028	static void	1217	static void
1029	pipecb (EV_P_ ev_io *iow, int revents)	1218	pipecb (EV_P_ ev_io *iow, int revents)
1030	{	1219	{
		1220	int i;
		1221
1031	#if EV_USE_EVENTFD	1222	#if EV_USE_EVENTFD
1032	if (evfd >= 0)	1223	if (evfd >= 0)
1033	{	1224	{
1034	uint64_t counter;	1225	uint64_t counter;
1035	read (evfd, &counter, sizeof (uint64_t));	1226	read (evfd, &counter, sizeof (uint64_t));
…		…
1039	{	1230	{
1040	char dummy;	1231	char dummy;
1041	read (evpipe [0], &dummy, 1);	1232	read (evpipe [0], &dummy, 1);
1042	}	1233	}
1043		1234
1044	if (gotsig && ev_is_default_loop (EV_A))	1235	if (sig_pending)
1045	{	1236	{
1046	int signum;	1237	sig_pending = 0;
1047	gotsig = 0;
1048		1238
1049	for (signum = signalmax; signum--; )	1239	for (i = EV_NSIG - 1; i--; )
1050	if (signals [signum].gotsig)	1240	if (expect_false (signals [i].pending))
1051	ev_feed_signal_event (EV_A_ signum + 1);	1241	ev_feed_signal_event (EV_A_ i + 1);
1052	}	1242	}
1053		1243
1054	#if EV_ASYNC_ENABLE	1244	#if EV_ASYNC_ENABLE
1055	if (gotasync)	1245	if (async_pending)
1056	{	1246	{
1057	int i;	1247	async_pending = 0;
1058	gotasync = 0;
1059		1248
1060	for (i = asynccnt; i--; )	1249	for (i = asynccnt; i--; )
1061	if (asyncs [i]->sent)	1250	if (asyncs [i]->sent)
1062	{	1251	{
1063	asyncs [i]->sent = 0;	1252	asyncs [i]->sent = 0;
…		…
1071		1260
1072	static void	1261	static void
1073	ev_sighandler (int signum)	1262	ev_sighandler (int signum)
1074	{	1263	{
1075	#if EV_MULTIPLICITY	1264	#if EV_MULTIPLICITY
1076	struct ev_loop *loop = &default_loop_struct;	1265	EV_P = signals [signum - 1].loop;
1077	#endif	1266	#endif
1078		1267
1079	#if _WIN32	1268	#if _WIN32
1080	signal (signum, ev_sighandler);	1269	signal (signum, ev_sighandler);
1081	#endif	1270	#endif
1082		1271
1083	signals [signum - 1].gotsig = 1;	1272	signals [signum - 1].pending = 1;
1084	evpipe_write (EV_A_ &gotsig);	1273	evpipe_write (EV_A_ &sig_pending);
1085	}	1274	}
1086		1275
1087	void noinline	1276	void noinline
1088	ev_feed_signal_event (EV_P_ int signum)	1277	ev_feed_signal_event (EV_P_ int signum)
1089	{	1278	{
1090	WL w;	1279	WL w;
1091		1280
		1281	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1282	return;
		1283
		1284	--signum;
		1285
1092	#if EV_MULTIPLICITY	1286	#if EV_MULTIPLICITY
1093	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 */
1094	#endif	1288	/* or, likely more useful, feeding a signal nobody is waiting for */
1095		1289
1096	--signum;	1290	if (expect_false (signals [signum].loop != EV_A))
1097
1098	if (signum < 0 || signum >= signalmax)
1099	return;	1291	return;
		1292	#endif
1100		1293
1101	signals [signum].gotsig = 0;	1294	signals [signum].pending = 0;
1102		1295
1103	for (w = signals [signum].head; w; w = w->next)	1296	for (w = signals [signum].head; w; w = w->next)
1104	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1297	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1105	}	1298	}
1106		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
1107	/*****************************************************************************/	1320	/*****************************************************************************/
1108		1321
1109	static WL childs [EV_PID_HASHSIZE];	1322	static WL childs [EV_PID_HASHSIZE];
1110		1323
1111	#ifndef _WIN32	1324	#ifndef _WIN32
…		…
1114		1327
1115	#ifndef WIFCONTINUED	1328	#ifndef WIFCONTINUED
1116	# define WIFCONTINUED(status) 0	1329	# define WIFCONTINUED(status) 0
1117	#endif	1330	#endif
1118		1331
1119	void inline_speed	1332	/* handle a single child status event */
		1333	inline_speed void
1120	child_reap (EV_P_ int chain, int pid, int status)	1334	child_reap (EV_P_ int chain, int pid, int status)
1121	{	1335	{
1122	ev_child *w;	1336	ev_child *w;
1123	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1337	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1124		1338
…		…
1137		1351
1138	#ifndef WCONTINUED	1352	#ifndef WCONTINUED
1139	# define WCONTINUED 0	1353	# define WCONTINUED 0
1140	#endif	1354	#endif
1141		1355
		1356	/* called on sigchld etc., calls waitpid */
1142	static void	1357	static void
1143	childcb (EV_P_ ev_signal *sw, int revents)	1358	childcb (EV_P_ ev_signal *sw, int revents)
1144	{	1359	{
1145	int pid, status;	1360	int pid, status;
1146		1361
…		…
1227	/* kqueue is borked on everything but netbsd apparently */	1442	/* kqueue is borked on everything but netbsd apparently */
1228	/* 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 */
1229	flags &= ~EVBACKEND_KQUEUE;	1444	flags &= ~EVBACKEND_KQUEUE;
1230	#endif	1445	#endif
1231	#ifdef __APPLE__	1446	#ifdef __APPLE__
1232	// flags &= ~EVBACKEND_KQUEUE; for documentation	1447	/* only select works correctly on that "unix-certified" platform */
1233	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 */
1234	#endif	1450	#endif
1235		1451
1236	return flags;	1452	return flags;
1237	}	1453	}
1238		1454
…		…
1252	ev_backend (EV_P)	1468	ev_backend (EV_P)
1253	{	1469	{
1254	return backend;	1470	return backend;
1255	}	1471	}
1256		1472
		1473	#if EV_MINIMAL < 2
1257	unsigned int	1474	unsigned int
1258	ev_loop_count (EV_P)	1475	ev_loop_count (EV_P)
1259	{	1476	{
1260	return loop_count;	1477	return loop_count;
1261	}	1478	}
1262		1479
		1480	unsigned int
		1481	ev_loop_depth (EV_P)
		1482	{
		1483	return loop_depth;
		1484	}
		1485
1263	void	1486	void
1264	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1487	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1265	{	1488	{
1266	io_blocktime = interval;	1489	io_blocktime = interval;
1267	}	1490	}
…		…
1270	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1493	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1271	{	1494	{
1272	timeout_blocktime = interval;	1495	timeout_blocktime = interval;
1273	}	1496	}
1274		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 */
1275	static void noinline	1523	static void noinline
1276	loop_init (EV_P_ unsigned int flags)	1524	loop_init (EV_P_ unsigned int flags)
1277	{	1525	{
1278	if (!backend)	1526	if (!backend)
1279	{	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
1280	#if EV_USE_MONOTONIC	1538	#if EV_USE_MONOTONIC
		1539	if (!have_monotonic)
1281	{	1540	{
1282	struct timespec ts;	1541	struct timespec ts;
		1542
1283	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1543	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1284	have_monotonic = 1;	1544	have_monotonic = 1;
1285	}	1545	}
1286	#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"));
1287		1558
1288	ev_rt_now = ev_time ();	1559	ev_rt_now = ev_time ();
1289	mn_now = get_clock ();	1560	mn_now = get_clock ();
1290	now_floor = mn_now;	1561	now_floor = mn_now;
1291	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
1292		1566
1293	io_blocktime = 0.;	1567	io_blocktime = 0.;
1294	timeout_blocktime = 0.;	1568	timeout_blocktime = 0.;
1295	backend = 0;	1569	backend = 0;
1296	backend_fd = -1;	1570	backend_fd = -1;
1297	gotasync = 0;	1571	sig_pending = 0;
		1572	#if EV_ASYNC_ENABLE
		1573	async_pending = 0;
		1574	#endif
1298	#if EV_USE_INOTIFY	1575	#if EV_USE_INOTIFY
1299	fs_fd = -2;	1576	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1300	#endif	1577	#endif
1301		1578	#if EV_USE_SIGNALFD
1302	/* pid check not overridable via env */	1579	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1303	#ifndef _WIN32
1304	if (flags & EVFLAG_FORKCHECK)
1305	curpid = getpid ();
1306	#endif	1580	#endif
1307
1308	if (!(flags & EVFLAG_NOENV)
1309	&& !enable_secure ()
1310	&& getenv ("LIBEV_FLAGS"))
1311	flags = atoi (getenv ("LIBEV_FLAGS"));
1312		1581
1313	if (!(flags & 0x0000ffffU))	1582	if (!(flags & 0x0000ffffU))
1314	flags |= ev_recommended_backends ();	1583	flags |= ev_recommended_backends ();
1315		1584
1316	#if EV_USE_PORT	1585	#if EV_USE_PORT
…		…
1327	#endif	1596	#endif
1328	#if EV_USE_SELECT	1597	#if EV_USE_SELECT
1329	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1598	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1330	#endif	1599	#endif
1331		1600
		1601	ev_prepare_init (&pending_w, pendingcb);
		1602
1332	ev_init (&pipeev, pipecb);	1603	ev_init (&pipe_w, pipecb);
1333	ev_set_priority (&pipeev, EV_MAXPRI);	1604	ev_set_priority (&pipe_w, EV_MAXPRI);
1334	}	1605	}
1335	}	1606	}
1336		1607
		1608	/* free up a loop structure */
1337	static void noinline	1609	static void noinline
1338	loop_destroy (EV_P)	1610	loop_destroy (EV_P)
1339	{	1611	{
1340	int i;	1612	int i;
1341		1613
1342	if (ev_is_active (&pipeev))	1614	if (ev_is_active (&pipe_w))
1343	{	1615	{
1344	ev_ref (EV_A); /* signal watcher */	1616	/*ev_ref (EV_A);*/
1345	ev_io_stop (EV_A_ &pipeev);	1617	/*ev_io_stop (EV_A_ &pipe_w);*/
1346		1618
1347	#if EV_USE_EVENTFD	1619	#if EV_USE_EVENTFD
1348	if (evfd >= 0)	1620	if (evfd >= 0)
1349	close (evfd);	1621	close (evfd);
1350	#endif	1622	#endif
…		…
1354	close (evpipe [0]);	1626	close (evpipe [0]);
1355	close (evpipe [1]);	1627	close (evpipe [1]);
1356	}	1628	}
1357	}	1629	}
1358		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
1359	#if EV_USE_INOTIFY	1641	#if EV_USE_INOTIFY
1360	if (fs_fd >= 0)	1642	if (fs_fd >= 0)
1361	close (fs_fd);	1643	close (fs_fd);
1362	#endif	1644	#endif
1363		1645
…		…
1386	#if EV_IDLE_ENABLE	1668	#if EV_IDLE_ENABLE
1387	array_free (idle, [i]);	1669	array_free (idle, [i]);
1388	#endif	1670	#endif
1389	}	1671	}
1390		1672
1391	ev_free (anfds); anfdmax = 0;	1673	ev_free (anfds); anfds = 0; anfdmax = 0;
1392		1674
1393	/* 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);
1394	array_free (fdchange, EMPTY);	1677	array_free (fdchange, EMPTY);
1395	array_free (timer, EMPTY);	1678	array_free (timer, EMPTY);
1396	#if EV_PERIODIC_ENABLE	1679	#if EV_PERIODIC_ENABLE
1397	array_free (periodic, EMPTY);	1680	array_free (periodic, EMPTY);
1398	#endif	1681	#endif
…		…
1407		1690
1408	backend = 0;	1691	backend = 0;
1409	}	1692	}
1410		1693
1411	#if EV_USE_INOTIFY	1694	#if EV_USE_INOTIFY
1412	void inline_size infy_fork (EV_P);	1695	inline_size void infy_fork (EV_P);
1413	#endif	1696	#endif
1414		1697
1415	void inline_size	1698	inline_size void
1416	loop_fork (EV_P)	1699	loop_fork (EV_P)
1417	{	1700	{
1418	#if EV_USE_PORT	1701	#if EV_USE_PORT
1419	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1702	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1420	#endif	1703	#endif
…		…
1426	#endif	1709	#endif
1427	#if EV_USE_INOTIFY	1710	#if EV_USE_INOTIFY
1428	infy_fork (EV_A);	1711	infy_fork (EV_A);
1429	#endif	1712	#endif
1430		1713
1431	if (ev_is_active (&pipeev))	1714	if (ev_is_active (&pipe_w))
1432	{	1715	{
1433	/* this "locks" the handlers against writing to the pipe */	1716	/* this "locks" the handlers against writing to the pipe */
1434	/* while we modify the fd vars */	1717	/* while we modify the fd vars */
1435	gotsig = 1;	1718	sig_pending = 1;
1436	#if EV_ASYNC_ENABLE	1719	#if EV_ASYNC_ENABLE
1437	gotasync = 1;	1720	async_pending = 1;
1438	#endif	1721	#endif
1439		1722
1440	ev_ref (EV_A);	1723	ev_ref (EV_A);
1441	ev_io_stop (EV_A_ &pipeev);	1724	ev_io_stop (EV_A_ &pipe_w);
1442		1725
1443	#if EV_USE_EVENTFD	1726	#if EV_USE_EVENTFD
1444	if (evfd >= 0)	1727	if (evfd >= 0)
1445	close (evfd);	1728	close (evfd);
1446	#endif	1729	#endif
…		…
1451	close (evpipe [1]);	1734	close (evpipe [1]);
1452	}	1735	}
1453		1736
1454	evpipe_init (EV_A);	1737	evpipe_init (EV_A);
1455	/* now iterate over everything, in case we missed something */	1738	/* now iterate over everything, in case we missed something */
1456	pipecb (EV_A_ &pipeev, EV_READ);	1739	pipecb (EV_A_ &pipe_w, EV_READ);
1457	}	1740	}
1458		1741
1459	postfork = 0;	1742	postfork = 0;
1460	}	1743	}
1461		1744
1462	#if EV_MULTIPLICITY	1745	#if EV_MULTIPLICITY
		1746
1463	struct ev_loop *	1747	struct ev_loop *
1464	ev_loop_new (unsigned int flags)	1748	ev_loop_new (unsigned int flags)
1465	{	1749	{
1466	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));
1467		1751
1468	memset (loop, 0, sizeof (struct ev_loop));	1752	memset (EV_A, 0, sizeof (struct ev_loop));
1469
1470	loop_init (EV_A_ flags);	1753	loop_init (EV_A_ flags);
1471		1754
1472	if (ev_backend (EV_A))	1755	if (ev_backend (EV_A))
1473	return loop;	1756	return EV_A;
1474		1757
1475	return 0;	1758	return 0;
1476	}	1759	}
1477		1760
1478	void	1761	void
…		…
1484		1767
1485	void	1768	void
1486	ev_loop_fork (EV_P)	1769	ev_loop_fork (EV_P)
1487	{	1770	{
1488	postfork = 1; /* must be in line with ev_default_fork */	1771	postfork = 1; /* must be in line with ev_default_fork */
		1772	}
		1773	#endif /* multiplicity */
		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
1489	}	1873	}
1490	#endif	1874	#endif
1491		1875
1492	#if EV_MULTIPLICITY	1876	#if EV_MULTIPLICITY
1493	struct ev_loop *	1877	struct ev_loop *
…		…
1498	#endif	1882	#endif
1499	{	1883	{
1500	if (!ev_default_loop_ptr)	1884	if (!ev_default_loop_ptr)
1501	{	1885	{
1502	#if EV_MULTIPLICITY	1886	#if EV_MULTIPLICITY
1503	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1887	EV_P = ev_default_loop_ptr = &default_loop_struct;
1504	#else	1888	#else
1505	ev_default_loop_ptr = 1;	1889	ev_default_loop_ptr = 1;
1506	#endif	1890	#endif
1507		1891
1508	loop_init (EV_A_ flags);	1892	loop_init (EV_A_ flags);
…		…
1525		1909
1526	void	1910	void
1527	ev_default_destroy (void)	1911	ev_default_destroy (void)
1528	{	1912	{
1529	#if EV_MULTIPLICITY	1913	#if EV_MULTIPLICITY
1530	struct ev_loop *loop = ev_default_loop_ptr;	1914	EV_P = ev_default_loop_ptr;
1531	#endif	1915	#endif
		1916
		1917	ev_default_loop_ptr = 0;
1532		1918
1533	#ifndef _WIN32	1919	#ifndef _WIN32
1534	ev_ref (EV_A); /* child watcher */	1920	ev_ref (EV_A); /* child watcher */
1535	ev_signal_stop (EV_A_ &childev);	1921	ev_signal_stop (EV_A_ &childev);
1536	#endif	1922	#endif
…		…
1540		1926
1541	void	1927	void
1542	ev_default_fork (void)	1928	ev_default_fork (void)
1543	{	1929	{
1544	#if EV_MULTIPLICITY	1930	#if EV_MULTIPLICITY
1545	struct ev_loop *loop = ev_default_loop_ptr;	1931	EV_P = ev_default_loop_ptr;
1546	#endif	1932	#endif
1547		1933
1548	if (backend)
1549	postfork = 1; /* must be in line with ev_loop_fork */	1934	postfork = 1; /* must be in line with ev_loop_fork */
1550	}	1935	}
1551		1936
1552	/*****************************************************************************/	1937	/*****************************************************************************/
1553		1938
1554	void	1939	void
1555	ev_invoke (EV_P_ void *w, int revents)	1940	ev_invoke (EV_P_ void *w, int revents)
1556	{	1941	{
1557	EV_CB_INVOKE ((W)w, revents);	1942	EV_CB_INVOKE ((W)w, revents);
1558	}	1943	}
1559		1944
1560	void inline_speed	1945	unsigned int
1561	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)
1562	{	1959	{
1563	int pri;	1960	int pri;
1564		1961
1565	for (pri = NUMPRI; pri--; )	1962	for (pri = NUMPRI; pri--; )
1566	while (pendingcnt [pri])	1963	while (pendingcnt [pri])
1567	{	1964	{
1568	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1965	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1569		1966
1570	if (expect_true (p->w))
1571	{
1572	/*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 */
1573		1969
1574	p->w->pending = 0;	1970	p->w->pending = 0;
1575	EV_CB_INVOKE (p->w, p->events);	1971	EV_CB_INVOKE (p->w, p->events);
1576	}	1972	EV_FREQUENT_CHECK;
1577	}	1973	}
1578	}	1974	}
1579		1975
1580	#if EV_IDLE_ENABLE	1976	#if EV_IDLE_ENABLE
1581	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
1582	idle_reify (EV_P)	1980	idle_reify (EV_P)
1583	{	1981	{
1584	if (expect_false (idleall))	1982	if (expect_false (idleall))
1585	{	1983	{
1586	int pri;	1984	int pri;
…		…
1598	}	1996	}
1599	}	1997	}
1600	}	1998	}
1601	#endif	1999	#endif
1602		2000
1603	void inline_size	2001	/* make timers pending */
		2002	inline_size void
1604	timers_reify (EV_P)	2003	timers_reify (EV_P)
1605	{	2004	{
		2005	EV_FREQUENT_CHECK;
		2006
1606	while (timercnt && ANHE_at (timers [HEAP0]) <= mn_now)	2007	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1607	{	2008	{
1608	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	2009	do
1609
1610	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1611
1612	/* first reschedule or stop timer */
1613	if (w->repeat)
1614	{	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	{
1615	ev_at (w) += w->repeat;	2018	ev_at (w) += w->repeat;
1616	if (ev_at (w) < mn_now)	2019	if (ev_at (w) < mn_now)
1617	ev_at (w) = mn_now;	2020	ev_at (w) = mn_now;
1618		2021
1619	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	2022	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1620		2023
1621	ANHE_at_set (timers [HEAP0]);	2024	ANHE_at_cache (timers [HEAP0]);
1622	downheap (timers, timercnt, 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);
1623	}	2032	}
1624	else	2033	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1625	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1626		2034
1627	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	2035	feed_reverse_done (EV_A_ EV_TIMEOUT);
1628	}	2036	}
1629	}	2037	}
1630		2038
1631	#if EV_PERIODIC_ENABLE	2039	#if EV_PERIODIC_ENABLE
1632	void inline_size	2040	/* make periodics pending */
		2041	inline_size void
1633	periodics_reify (EV_P)	2042	periodics_reify (EV_P)
1634	{	2043	{
		2044	EV_FREQUENT_CHECK;
		2045
1635	while (periodiccnt && ANHE_at (periodics [HEAP0]) <= ev_rt_now)	2046	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1636	{	2047	{
1637	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	2048	int feed_count = 0;
1638		2049
1639	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	2050	do
1640
1641	/* first reschedule or stop timer */
1642	if (w->reschedule_cb)
1643	{	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	{
1644	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);	2059	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1645		2060
1646	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));	2061	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1647		2062
1648	ANHE_at_set (periodics [HEAP0]);	2063	ANHE_at_cache (periodics [HEAP0]);
1649	downheap (periodics, periodiccnt, 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);
1650	}	2090	}
1651	else if (w->interval)	2091	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1652	{
1653	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1654	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1655		2092
1656	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1657
1658	ANHE_at_set (periodics [HEAP0]);
1659	downheap (periodics, periodiccnt, HEAP0);
1660	}
1661	else
1662	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1663
1664	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	2093	feed_reverse_done (EV_A_ EV_PERIODIC);
1665	}	2094	}
1666	}	2095	}
1667		2096
		2097	/* simply recalculate all periodics */
		2098	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1668	static void noinline	2099	static void noinline
1669	periodics_reschedule (EV_P)	2100	periodics_reschedule (EV_P)
1670	{	2101	{
1671	int i;	2102	int i;
1672		2103
…		…
1678	if (w->reschedule_cb)	2109	if (w->reschedule_cb)
1679	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2110	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1680	else if (w->interval)	2111	else if (w->interval)
1681	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2112	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1682		2113
1683	ANHE_at_set (periodics [i]);	2114	ANHE_at_cache (periodics [i]);
1684	}	2115	}
1685		2116
1686	/* we don't use floyds algorithm, uphead is simpler and is more cache-efficient */	2117	reheap (periodics, periodiccnt);
1687	/* also, this is easy and corretc for both 2-heaps and 4-heaps */	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
1688	for (i = 0; i < periodiccnt; ++i)	2127	for (i = 0; i < timercnt; ++i)
1689	upheap (periodics, i + HEAP0);	2128	{
		2129	ANHE *he = timers + i + HEAP0;
		2130	ANHE_w (*he)->at += adjust;
		2131	ANHE_at_cache (*he);
		2132	}
1690	}	2133	}
1691	#endif
1692		2134
1693	void inline_speed	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
1694	time_update (EV_P_ ev_tstamp max_block)	2138	time_update (EV_P_ ev_tstamp max_block)
1695	{	2139	{
1696	int i;
1697
1698	#if EV_USE_MONOTONIC	2140	#if EV_USE_MONOTONIC
1699	if (expect_true (have_monotonic))	2141	if (expect_true (have_monotonic))
1700	{	2142	{
		2143	int i;
1701	ev_tstamp odiff = rtmn_diff;	2144	ev_tstamp odiff = rtmn_diff;
1702		2145
1703	mn_now = get_clock ();	2146	mn_now = get_clock ();
1704		2147
1705	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2148	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1731	ev_rt_now = ev_time ();	2174	ev_rt_now = ev_time ();
1732	mn_now = get_clock ();	2175	mn_now = get_clock ();
1733	now_floor = mn_now;	2176	now_floor = mn_now;
1734	}	2177	}
1735		2178
		2179	/* no timer adjustment, as the monotonic clock doesn't jump */
		2180	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1736	# if EV_PERIODIC_ENABLE	2181	# if EV_PERIODIC_ENABLE
1737	periodics_reschedule (EV_A);	2182	periodics_reschedule (EV_A);
1738	# endif	2183	# endif
1739	/* no timer adjustment, as the monotonic clock doesn't jump */
1740	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1741	}	2184	}
1742	else	2185	else
1743	#endif	2186	#endif
1744	{	2187	{
1745	ev_rt_now = ev_time ();	2188	ev_rt_now = ev_time ();
1746		2189
1747	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))
1748	{	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);
1749	#if EV_PERIODIC_ENABLE	2194	#if EV_PERIODIC_ENABLE
1750	periodics_reschedule (EV_A);	2195	periodics_reschedule (EV_A);
1751	#endif	2196	#endif
1752	/* adjust timers. this is easy, as the offset is the same for all of them */
1753	for (i = 0; i < timercnt; ++i)
1754	{
1755	ANHE *he = timers + i + HEAP0;
1756	ANHE_w (*he)->at += ev_rt_now - mn_now;
1757	ANHE_at_set (*he);
1758	}
1759	}	2197	}
1760		2198
1761	mn_now = ev_rt_now;	2199	mn_now = ev_rt_now;
1762	}	2200	}
1763	}	2201	}
1764		2202
1765	void	2203	void
1766	ev_ref (EV_P)
1767	{
1768	++activecnt;
1769	}
1770
1771	void
1772	ev_unref (EV_P)
1773	{
1774	--activecnt;
1775	}
1776
1777	static int loop_done;
1778
1779	void
1780	ev_loop (EV_P_ int flags)	2204	ev_loop (EV_P_ int flags)
1781	{	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
1782	loop_done = EVUNLOOP_CANCEL;	2212	loop_done = EVUNLOOP_CANCEL;
1783		2213
1784	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 */
1785		2215
1786	do	2216	do
1787	{	2217	{
		2218	#if EV_VERIFY >= 2
		2219	ev_loop_verify (EV_A);
		2220	#endif
		2221
1788	#ifndef _WIN32	2222	#ifndef _WIN32
1789	if (expect_false (curpid)) /* penalise the forking check even more */	2223	if (expect_false (curpid)) /* penalise the forking check even more */
1790	if (expect_false (getpid () != curpid))	2224	if (expect_false (getpid () != curpid))
1791	{	2225	{
1792	curpid = getpid ();	2226	curpid = getpid ();
…		…
1798	/* we might have forked, so queue fork handlers */	2232	/* we might have forked, so queue fork handlers */
1799	if (expect_false (postfork))	2233	if (expect_false (postfork))
1800	if (forkcnt)	2234	if (forkcnt)
1801	{	2235	{
1802	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2236	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1803	call_pending (EV_A);	2237	EV_INVOKE_PENDING;
1804	}	2238	}
1805	#endif	2239	#endif
1806		2240
1807	/* queue prepare watchers (and execute them) */	2241	/* queue prepare watchers (and execute them) */
1808	if (expect_false (preparecnt))	2242	if (expect_false (preparecnt))
1809	{	2243	{
1810	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2244	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1811	call_pending (EV_A);	2245	EV_INVOKE_PENDING;
1812	}	2246	}
1813		2247
1814	if (expect_false (!activecnt))	2248	if (expect_false (loop_done))
1815	break;	2249	break;
1816		2250
1817	/* we might have forked, so reify kernel state if necessary */	2251	/* we might have forked, so reify kernel state if necessary */
1818	if (expect_false (postfork))	2252	if (expect_false (postfork))
1819	loop_fork (EV_A);	2253	loop_fork (EV_A);
…		…
1826	ev_tstamp waittime = 0.;	2260	ev_tstamp waittime = 0.;
1827	ev_tstamp sleeptime = 0.;	2261	ev_tstamp sleeptime = 0.;
1828		2262
1829	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2263	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1830	{	2264	{
		2265	/* remember old timestamp for io_blocktime calculation */
		2266	ev_tstamp prev_mn_now = mn_now;
		2267
1831	/* update time to cancel out callback processing overhead */	2268	/* update time to cancel out callback processing overhead */
1832	time_update (EV_A_ 1e100);	2269	time_update (EV_A_ 1e100);
1833		2270
1834	waittime = MAX_BLOCKTIME;	2271	waittime = MAX_BLOCKTIME;
1835		2272
…		…
1845	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2282	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1846	if (waittime > to) waittime = to;	2283	if (waittime > to) waittime = to;
1847	}	2284	}
1848	#endif	2285	#endif
1849		2286
		2287	/* don't let timeouts decrease the waittime below timeout_blocktime */
1850	if (expect_false (waittime < timeout_blocktime))	2288	if (expect_false (waittime < timeout_blocktime))
1851	waittime = timeout_blocktime;	2289	waittime = timeout_blocktime;
1852		2290
1853	sleeptime = waittime - backend_fudge;	2291	/* extra check because io_blocktime is commonly 0 */
1854
1855	if (expect_true (sleeptime > io_blocktime))	2292	if (expect_false (io_blocktime))
1856	sleeptime = io_blocktime;
1857
1858	if (sleeptime)
1859	{	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	{
1860	ev_sleep (sleeptime);	2301	ev_sleep (sleeptime);
1861	waittime -= sleeptime;	2302	waittime -= sleeptime;
		2303	}
1862	}	2304	}
1863	}	2305	}
1864		2306
		2307	#if EV_MINIMAL < 2
1865	++loop_count;	2308	++loop_count;
		2309	#endif
		2310	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1866	backend_poll (EV_A_ waittime);	2311	backend_poll (EV_A_ waittime);
		2312	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1867		2313
1868	/* update ev_rt_now, do magic */	2314	/* update ev_rt_now, do magic */
1869	time_update (EV_A_ waittime + sleeptime);	2315	time_update (EV_A_ waittime + sleeptime);
1870	}	2316	}
1871		2317
…		…
1882		2328
1883	/* queue check watchers, to be executed first */	2329	/* queue check watchers, to be executed first */
1884	if (expect_false (checkcnt))	2330	if (expect_false (checkcnt))
1885	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2331	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1886		2332
1887	call_pending (EV_A);	2333	EV_INVOKE_PENDING;
1888	}	2334	}
1889	while (expect_true (	2335	while (expect_true (
1890	activecnt	2336	activecnt
1891	&& !loop_done	2337	&& !loop_done
1892	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2338	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1893	));	2339	));
1894		2340
1895	if (loop_done == EVUNLOOP_ONE)	2341	if (loop_done == EVUNLOOP_ONE)
1896	loop_done = EVUNLOOP_CANCEL;	2342	loop_done = EVUNLOOP_CANCEL;
		2343
		2344	#if EV_MINIMAL < 2
		2345	--loop_depth;
		2346	#endif
1897	}	2347	}
1898		2348
1899	void	2349	void
1900	ev_unloop (EV_P_ int how)	2350	ev_unloop (EV_P_ int how)
1901	{	2351	{
1902	loop_done = how;	2352	loop_done = how;
1903	}	2353	}
1904		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
1905	/*****************************************************************************/	2392	/*****************************************************************************/
		2393	/* singly-linked list management, used when the expected list length is short */
1906		2394
1907	void inline_size	2395	inline_size void
1908	wlist_add (WL *head, WL elem)	2396	wlist_add (WL *head, WL elem)
1909	{	2397	{
1910	elem->next = *head;	2398	elem->next = *head;
1911	*head = elem;	2399	*head = elem;
1912	}	2400	}
1913		2401
1914	void inline_size	2402	inline_size void
1915	wlist_del (WL *head, WL elem)	2403	wlist_del (WL *head, WL elem)
1916	{	2404	{
1917	while (*head)	2405	while (*head)
1918	{	2406	{
1919	if (*head == elem)	2407	if (expect_true (*head == elem))
1920	{	2408	{
1921	*head = elem->next;	2409	*head = elem->next;
1922	return;	2410	break;
1923	}	2411	}
1924		2412
1925	head = &(*head)->next;	2413	head = &(*head)->next;
1926	}	2414	}
1927	}	2415	}
1928		2416
1929	void inline_speed	2417	/* internal, faster, version of ev_clear_pending */
		2418	inline_speed void
1930	clear_pending (EV_P_ W w)	2419	clear_pending (EV_P_ W w)
1931	{	2420	{
1932	if (w->pending)	2421	if (w->pending)
1933	{	2422	{
1934	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2423	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1935	w->pending = 0;	2424	w->pending = 0;
1936	}	2425	}
1937	}	2426	}
1938		2427
1939	int	2428	int
…		…
1943	int pending = w_->pending;	2432	int pending = w_->pending;
1944		2433
1945	if (expect_true (pending))	2434	if (expect_true (pending))
1946	{	2435	{
1947	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2436	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2437	p->w = (W)&pending_w;
1948	w_->pending = 0;	2438	w_->pending = 0;
1949	p->w = 0;
1950	return p->events;	2439	return p->events;
1951	}	2440	}
1952	else	2441	else
1953	return 0;	2442	return 0;
1954	}	2443	}
1955		2444
1956	void inline_size	2445	inline_size void
1957	pri_adjust (EV_P_ W w)	2446	pri_adjust (EV_P_ W w)
1958	{	2447	{
1959	int pri = w->priority;	2448	int pri = ev_priority (w);
1960	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2449	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1961	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2450	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1962	w->priority = pri;	2451	ev_set_priority (w, pri);
1963	}	2452	}
1964		2453
1965	void inline_speed	2454	inline_speed void
1966	ev_start (EV_P_ W w, int active)	2455	ev_start (EV_P_ W w, int active)
1967	{	2456	{
1968	pri_adjust (EV_A_ w);	2457	pri_adjust (EV_A_ w);
1969	w->active = active;	2458	w->active = active;
1970	ev_ref (EV_A);	2459	ev_ref (EV_A);
1971	}	2460	}
1972		2461
1973	void inline_size	2462	inline_size void
1974	ev_stop (EV_P_ W w)	2463	ev_stop (EV_P_ W w)
1975	{	2464	{
1976	ev_unref (EV_A);	2465	ev_unref (EV_A);
1977	w->active = 0;	2466	w->active = 0;
1978	}	2467	}
…		…
1985	int fd = w->fd;	2474	int fd = w->fd;
1986		2475
1987	if (expect_false (ev_is_active (w)))	2476	if (expect_false (ev_is_active (w)))
1988	return;	2477	return;
1989		2478
1990	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;
1991		2483
1992	ev_start (EV_A_ (W)w, 1);	2484	ev_start (EV_A_ (W)w, 1);
1993	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2485	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1994	wlist_add (&anfds[fd].head, (WL)w);	2486	wlist_add (&anfds[fd].head, (WL)w);
1995		2487
1996	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2488	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1997	w->events &= ~EV_IOFDSET;	2489	w->events &= ~EV__IOFDSET;
		2490
		2491	EV_FREQUENT_CHECK;
1998	}	2492	}
1999		2493
2000	void noinline	2494	void noinline
2001	ev_io_stop (EV_P_ ev_io *w)	2495	ev_io_stop (EV_P_ ev_io *w)
2002	{	2496	{
2003	clear_pending (EV_A_ (W)w);	2497	clear_pending (EV_A_ (W)w);
2004	if (expect_false (!ev_is_active (w)))	2498	if (expect_false (!ev_is_active (w)))
2005	return;	2499	return;
2006		2500
2007	assert (("ev_io_stop 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;
2008		2504
2009	wlist_del (&anfds[w->fd].head, (WL)w);	2505	wlist_del (&anfds[w->fd].head, (WL)w);
2010	ev_stop (EV_A_ (W)w);	2506	ev_stop (EV_A_ (W)w);
2011		2507
2012	fd_change (EV_A_ w->fd, 1);	2508	fd_change (EV_A_ w->fd, 1);
		2509
		2510	EV_FREQUENT_CHECK;
2013	}	2511	}
2014		2512
2015	void noinline	2513	void noinline
2016	ev_timer_start (EV_P_ ev_timer *w)	2514	ev_timer_start (EV_P_ ev_timer *w)
2017	{	2515	{
2018	if (expect_false (ev_is_active (w)))	2516	if (expect_false (ev_is_active (w)))
2019	return;	2517	return;
2020		2518
2021	ev_at (w) += mn_now;	2519	ev_at (w) += mn_now;
2022		2520
2023	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.));
2024		2522
		2523	EV_FREQUENT_CHECK;
		2524
		2525	++timercnt;
2025	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);	2526	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2026	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);	2527	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2027	ANHE_w (timers [ev_active (w)]) = (WT)w;	2528	ANHE_w (timers [ev_active (w)]) = (WT)w;
2028	ANHE_at_set (timers [ev_active (w)]);	2529	ANHE_at_cache (timers [ev_active (w)]);
2029	upheap (timers, ev_active (w));	2530	upheap (timers, ev_active (w));
2030		2531
		2532	EV_FREQUENT_CHECK;
		2533
2031	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2534	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2032	}	2535	}
2033		2536
2034	void noinline	2537	void noinline
2035	ev_timer_stop (EV_P_ ev_timer *w)	2538	ev_timer_stop (EV_P_ ev_timer *w)
2036	{	2539	{
2037	clear_pending (EV_A_ (W)w);	2540	clear_pending (EV_A_ (W)w);
2038	if (expect_false (!ev_is_active (w)))	2541	if (expect_false (!ev_is_active (w)))
2039	return;	2542	return;
2040		2543
		2544	EV_FREQUENT_CHECK;
		2545
2041	{	2546	{
2042	int active = ev_active (w);	2547	int active = ev_active (w);
2043		2548
2044	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2549	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2045		2550
		2551	--timercnt;
		2552
2046	if (expect_true (active < timercnt + HEAP0 - 1))	2553	if (expect_true (active < timercnt + HEAP0))
2047	{	2554	{
2048	timers [active] = timers [timercnt + HEAP0 - 1];	2555	timers [active] = timers [timercnt + HEAP0];
2049	adjustheap (timers, timercnt, active);	2556	adjustheap (timers, timercnt, active);
2050	}	2557	}
2051
2052	--timercnt;
2053	}	2558	}
		2559
		2560	EV_FREQUENT_CHECK;
2054		2561
2055	ev_at (w) -= mn_now;	2562	ev_at (w) -= mn_now;
2056		2563
2057	ev_stop (EV_A_ (W)w);	2564	ev_stop (EV_A_ (W)w);
2058	}	2565	}
2059		2566
2060	void noinline	2567	void noinline
2061	ev_timer_again (EV_P_ ev_timer *w)	2568	ev_timer_again (EV_P_ ev_timer *w)
2062	{	2569	{
		2570	EV_FREQUENT_CHECK;
		2571
2063	if (ev_is_active (w))	2572	if (ev_is_active (w))
2064	{	2573	{
2065	if (w->repeat)	2574	if (w->repeat)
2066	{	2575	{
2067	ev_at (w) = mn_now + w->repeat;	2576	ev_at (w) = mn_now + w->repeat;
2068	ANHE_at_set (timers [ev_active (w)]);	2577	ANHE_at_cache (timers [ev_active (w)]);
2069	adjustheap (timers, timercnt, ev_active (w));	2578	adjustheap (timers, timercnt, ev_active (w));
2070	}	2579	}
2071	else	2580	else
2072	ev_timer_stop (EV_A_ w);	2581	ev_timer_stop (EV_A_ w);
2073	}	2582	}
2074	else if (w->repeat)	2583	else if (w->repeat)
2075	{	2584	{
2076	ev_at (w) = w->repeat;	2585	ev_at (w) = w->repeat;
2077	ev_timer_start (EV_A_ w);	2586	ev_timer_start (EV_A_ w);
2078	}	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.);
2079	}	2596	}
2080		2597
2081	#if EV_PERIODIC_ENABLE	2598	#if EV_PERIODIC_ENABLE
2082	void noinline	2599	void noinline
2083	ev_periodic_start (EV_P_ ev_periodic *w)	2600	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
2087		2604
2088	if (w->reschedule_cb)	2605	if (w->reschedule_cb)
2089	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2606	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2090	else if (w->interval)	2607	else if (w->interval)
2091	{	2608	{
2092	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.));
2093	/* 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 */
2094	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;
2095	}	2612	}
2096	else	2613	else
2097	ev_at (w) = w->offset;	2614	ev_at (w) = w->offset;
2098		2615
		2616	EV_FREQUENT_CHECK;
		2617
		2618	++periodiccnt;
2099	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);	2619	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2100	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);	2620	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2101	ANHE_w (periodics [ev_active (w)]) = (WT)w;	2621	ANHE_w (periodics [ev_active (w)]) = (WT)w;
2102	ANHE_at_set (periodics [ev_active (w)]);	2622	ANHE_at_cache (periodics [ev_active (w)]);
2103	upheap (periodics, ev_active (w));	2623	upheap (periodics, ev_active (w));
2104		2624
		2625	EV_FREQUENT_CHECK;
		2626
2105	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2627	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2106	}	2628	}
2107		2629
2108	void noinline	2630	void noinline
2109	ev_periodic_stop (EV_P_ ev_periodic *w)	2631	ev_periodic_stop (EV_P_ ev_periodic *w)
2110	{	2632	{
2111	clear_pending (EV_A_ (W)w);	2633	clear_pending (EV_A_ (W)w);
2112	if (expect_false (!ev_is_active (w)))	2634	if (expect_false (!ev_is_active (w)))
2113	return;	2635	return;
2114		2636
		2637	EV_FREQUENT_CHECK;
		2638
2115	{	2639	{
2116	int active = ev_active (w);	2640	int active = ev_active (w);
2117		2641
2118	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2642	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2119		2643
		2644	--periodiccnt;
		2645
2120	if (expect_true (active < periodiccnt + HEAP0 - 1))	2646	if (expect_true (active < periodiccnt + HEAP0))
2121	{	2647	{
2122	periodics [active] = periodics [periodiccnt + HEAP0 - 1];	2648	periodics [active] = periodics [periodiccnt + HEAP0];
2123	adjustheap (periodics, periodiccnt, active);	2649	adjustheap (periodics, periodiccnt, active);
2124	}	2650	}
2125
2126	--periodiccnt;
2127	}	2651	}
		2652
		2653	EV_FREQUENT_CHECK;
2128		2654
2129	ev_stop (EV_A_ (W)w);	2655	ev_stop (EV_A_ (W)w);
2130	}	2656	}
2131		2657
2132	void noinline	2658	void noinline
…		…
2143	#endif	2669	#endif
2144		2670
2145	void noinline	2671	void noinline
2146	ev_signal_start (EV_P_ ev_signal *w)	2672	ev_signal_start (EV_P_ ev_signal *w)
2147	{	2673	{
2148	#if EV_MULTIPLICITY
2149	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2150	#endif
2151	if (expect_false (ev_is_active (w)))	2674	if (expect_false (ev_is_active (w)))
2152	return;	2675	return;
2153		2676
2154	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));
2155		2678
2156	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));
2157		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)
2158	{	2690	{
2159	#ifndef _WIN32	2691	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2160	sigset_t full, prev;	2692	if (sigfd < 0 && errno == EINVAL)
2161	sigfillset (&full);	2693	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2162	sigprocmask (SIG_SETMASK, &full, &prev);
2163	#endif
2164		2694
2165	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2695	if (sigfd >= 0)
		2696	{
		2697	fd_intern (sigfd); /* doing it twice will not hurt */
2166		2698
2167	#ifndef _WIN32	2699	sigemptyset (&sigfd_set);
2168	sigprocmask (SIG_SETMASK, &prev, 0);	2700
2169	#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	}
2170	}	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
2171		2717
2172	ev_start (EV_A_ (W)w, 1);	2718	ev_start (EV_A_ (W)w, 1);
2173	wlist_add (&signals [w->signum - 1].head, (WL)w);	2719	wlist_add (&signals [w->signum - 1].head, (WL)w);
2174		2720
2175	if (!((WL)w)->next)	2721	if (!((WL)w)->next)
		2722	# if EV_USE_SIGNALFD
		2723	if (sigfd < 0) /*TODO*/
		2724	# endif
2176	{	2725	{
2177	#if _WIN32	2726	# if _WIN32
2178	signal (w->signum, ev_sighandler);	2727	signal (w->signum, ev_sighandler);
2179	#else	2728	# else
2180	struct sigaction sa;	2729	struct sigaction sa;
		2730
		2731	evpipe_init (EV_A);
		2732
2181	sa.sa_handler = ev_sighandler;	2733	sa.sa_handler = ev_sighandler;
2182	sigfillset (&sa.sa_mask);	2734	sigfillset (&sa.sa_mask);
2183	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 */
2184	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);
2185	#endif	2741	#endif
2186	}	2742	}
		2743
		2744	EV_FREQUENT_CHECK;
2187	}	2745	}
2188		2746
2189	void noinline	2747	void noinline
2190	ev_signal_stop (EV_P_ ev_signal *w)	2748	ev_signal_stop (EV_P_ ev_signal *w)
2191	{	2749	{
2192	clear_pending (EV_A_ (W)w);	2750	clear_pending (EV_A_ (W)w);
2193	if (expect_false (!ev_is_active (w)))	2751	if (expect_false (!ev_is_active (w)))
2194	return;	2752	return;
2195		2753
		2754	EV_FREQUENT_CHECK;
		2755
2196	wlist_del (&signals [w->signum - 1].head, (WL)w);	2756	wlist_del (&signals [w->signum - 1].head, (WL)w);
2197	ev_stop (EV_A_ (W)w);	2757	ev_stop (EV_A_ (W)w);
2198		2758
2199	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
2200	signal (w->signum, SIG_DFL);	2775	signal (w->signum, SIG_DFL);
		2776	}
		2777
		2778	EV_FREQUENT_CHECK;
2201	}	2779	}
2202		2780
2203	void	2781	void
2204	ev_child_start (EV_P_ ev_child *w)	2782	ev_child_start (EV_P_ ev_child *w)
2205	{	2783	{
2206	#if EV_MULTIPLICITY	2784	#if EV_MULTIPLICITY
2207	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));
2208	#endif	2786	#endif
2209	if (expect_false (ev_is_active (w)))	2787	if (expect_false (ev_is_active (w)))
2210	return;	2788	return;
2211		2789
		2790	EV_FREQUENT_CHECK;
		2791
2212	ev_start (EV_A_ (W)w, 1);	2792	ev_start (EV_A_ (W)w, 1);
2213	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;
2214	}	2796	}
2215		2797
2216	void	2798	void
2217	ev_child_stop (EV_P_ ev_child *w)	2799	ev_child_stop (EV_P_ ev_child *w)
2218	{	2800	{
2219	clear_pending (EV_A_ (W)w);	2801	clear_pending (EV_A_ (W)w);
2220	if (expect_false (!ev_is_active (w)))	2802	if (expect_false (!ev_is_active (w)))
2221	return;	2803	return;
2222		2804
		2805	EV_FREQUENT_CHECK;
		2806
2223	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2807	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2224	ev_stop (EV_A_ (W)w);	2808	ev_stop (EV_A_ (W)w);
		2809
		2810	EV_FREQUENT_CHECK;
2225	}	2811	}
2226		2812
2227	#if EV_STAT_ENABLE	2813	#if EV_STAT_ENABLE
2228		2814
2229	# ifdef _WIN32	2815	# ifdef _WIN32
2230	# undef lstat	2816	# undef lstat
2231	# define lstat(a,b) _stati64 (a,b)	2817	# define lstat(a,b) _stati64 (a,b)
2232	# endif	2818	# endif
2233		2819
2234	#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 */
2235	#define MIN_STAT_INTERVAL 0.1074891	2822	#define MIN_STAT_INTERVAL 0.1074891
2236		2823
2237	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);
2238		2825
2239	#if EV_USE_INOTIFY	2826	#if EV_USE_INOTIFY
2240	# define EV_INOTIFY_BUFSIZE 8192	2827	# define EV_INOTIFY_BUFSIZE 8192
…		…
2244	{	2831	{
2245	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);
2246		2833
2247	if (w->wd < 0)	2834	if (w->wd < 0)
2248	{	2835	{
		2836	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2249	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 */
2250		2838
2251	/* monitor some parent directory for speedup hints */	2839	/* monitor some parent directory for speedup hints */
2252	/* note that exceeding the hardcoded limit is not a correctness issue, */	2840	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2253	/* but an efficiency issue only */	2841	/* but an efficiency issue only */
2254	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2842	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2255	{	2843	{
2256	char path [4096];	2844	char path [4096];
2257	strcpy (path, w->path);	2845	strcpy (path, w->path);
…		…
2261	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2849	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2262	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2850	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2263		2851
2264	char *pend = strrchr (path, '/');	2852	char *pend = strrchr (path, '/');
2265		2853
2266	if (!pend)	2854	if (!pend || pend == path)
2267	break; /* whoops, no '/', complain to your admin */	2855	break;
2268		2856
2269	*pend = 0;	2857	*pend = 0;
2270	w->wd = inotify_add_watch (fs_fd, path, mask);	2858	w->wd = inotify_add_watch (fs_fd, path, mask);
2271	}	2859	}
2272	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2860	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2273	}	2861	}
2274	}	2862	}
2275	else
2276	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2277		2863
2278	if (w->wd >= 0)	2864	if (w->wd >= 0)
		2865	{
		2866	struct statfs sfs;
		2867
2279	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	}
2280	}	2886	}
2281		2887
2282	static void noinline	2888	static void noinline
2283	infy_del (EV_P_ ev_stat *w)	2889	infy_del (EV_P_ ev_stat *w)
2284	{	2890	{
…		…
2298		2904
2299	static void noinline	2905	static void noinline
2300	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)
2301	{	2907	{
2302	if (slot < 0)	2908	if (slot < 0)
2303	/* overflow, need to check for all hahs slots */	2909	/* overflow, need to check for all hash slots */
2304	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2910	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2305	infy_wd (EV_A_ slot, wd, ev);	2911	infy_wd (EV_A_ slot, wd, ev);
2306	else	2912	else
2307	{	2913	{
2308	WL w_;	2914	WL w_;
…		…
2314		2920
2315	if (w->wd == wd || wd == -1)	2921	if (w->wd == wd || wd == -1)
2316	{	2922	{
2317	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2923	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2318	{	2924	{
		2925	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2319	w->wd = -1;	2926	w->wd = -1;
2320	infy_add (EV_A_ w); /* re-add, no matter what */	2927	infy_add (EV_A_ w); /* re-add, no matter what */
2321	}	2928	}
2322		2929
2323	stat_timer_cb (EV_A_ &w->timer, 0);	2930	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2336		2943
2337	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)
2338	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2945	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2339	}	2946	}
2340		2947
2341	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
2342	infy_init (EV_P)	2972	infy_init (EV_P)
2343	{	2973	{
2344	if (fs_fd != -2)	2974	if (fs_fd != -2)
2345	return;	2975	return;
		2976
		2977	fs_fd = -1;
		2978
		2979	check_2625 (EV_A);
2346		2980
2347	fs_fd = inotify_init ();	2981	fs_fd = inotify_init ();
2348		2982
2349	if (fs_fd >= 0)	2983	if (fs_fd >= 0)
2350	{	2984	{
…		…
2352	ev_set_priority (&fs_w, EV_MAXPRI);	2986	ev_set_priority (&fs_w, EV_MAXPRI);
2353	ev_io_start (EV_A_ &fs_w);	2987	ev_io_start (EV_A_ &fs_w);
2354	}	2988	}
2355	}	2989	}
2356		2990
2357	void inline_size	2991	inline_size void
2358	infy_fork (EV_P)	2992	infy_fork (EV_P)
2359	{	2993	{
2360	int slot;	2994	int slot;
2361		2995
2362	if (fs_fd < 0)	2996	if (fs_fd < 0)
…		…
2378	w->wd = -1;	3012	w->wd = -1;
2379		3013
2380	if (fs_fd >= 0)	3014	if (fs_fd >= 0)
2381	infy_add (EV_A_ w); /* re-add, no matter what */	3015	infy_add (EV_A_ w); /* re-add, no matter what */
2382	else	3016	else
2383	ev_timer_start (EV_A_ &w->timer);	3017	ev_timer_again (EV_A_ &w->timer);
2384	}	3018	}
2385
2386	}	3019	}
2387	}	3020	}
2388		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)
2389	#endif	3028	#endif
2390		3029
2391	void	3030	void
2392	ev_stat_stat (EV_P_ ev_stat *w)	3031	ev_stat_stat (EV_P_ ev_stat *w)
2393	{	3032	{
…		…
2420	|| w->prev.st_atime != w->attr.st_atime	3059	|| w->prev.st_atime != w->attr.st_atime
2421	|| w->prev.st_mtime != w->attr.st_mtime	3060	|| w->prev.st_mtime != w->attr.st_mtime
2422	|| w->prev.st_ctime != w->attr.st_ctime	3061	|| w->prev.st_ctime != w->attr.st_ctime
2423	) {	3062	) {
2424	#if EV_USE_INOTIFY	3063	#if EV_USE_INOTIFY
		3064	if (fs_fd >= 0)
		3065	{
2425	infy_del (EV_A_ w);	3066	infy_del (EV_A_ w);
2426	infy_add (EV_A_ w);	3067	infy_add (EV_A_ w);
2427	ev_stat_stat (EV_A_ w); /* avoid race... */	3068	ev_stat_stat (EV_A_ w); /* avoid race... */
		3069	}
2428	#endif	3070	#endif
2429		3071
2430	ev_feed_event (EV_A_ w, EV_STAT);	3072	ev_feed_event (EV_A_ w, EV_STAT);
2431	}	3073	}
2432	}	3074	}
…		…
2435	ev_stat_start (EV_P_ ev_stat *w)	3077	ev_stat_start (EV_P_ ev_stat *w)
2436	{	3078	{
2437	if (expect_false (ev_is_active (w)))	3079	if (expect_false (ev_is_active (w)))
2438	return;	3080	return;
2439		3081
2440	/* since we use memcmp, we need to clear any padding data etc. */
2441	memset (&w->prev, 0, sizeof (ev_statdata));
2442	memset (&w->attr, 0, sizeof (ev_statdata));
2443
2444	ev_stat_stat (EV_A_ w);	3082	ev_stat_stat (EV_A_ w);
2445		3083
		3084	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2446	if (w->interval < MIN_STAT_INTERVAL)	3085	w->interval = MIN_STAT_INTERVAL;
2447	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2448		3086
2449	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);
2450	ev_set_priority (&w->timer, ev_priority (w));	3088	ev_set_priority (&w->timer, ev_priority (w));
2451		3089
2452	#if EV_USE_INOTIFY	3090	#if EV_USE_INOTIFY
2453	infy_init (EV_A);	3091	infy_init (EV_A);
2454		3092
2455	if (fs_fd >= 0)	3093	if (fs_fd >= 0)
2456	infy_add (EV_A_ w);	3094	infy_add (EV_A_ w);
2457	else	3095	else
2458	#endif	3096	#endif
2459	ev_timer_start (EV_A_ &w->timer);	3097	ev_timer_again (EV_A_ &w->timer);
2460		3098
2461	ev_start (EV_A_ (W)w, 1);	3099	ev_start (EV_A_ (W)w, 1);
		3100
		3101	EV_FREQUENT_CHECK;
2462	}	3102	}
2463		3103
2464	void	3104	void
2465	ev_stat_stop (EV_P_ ev_stat *w)	3105	ev_stat_stop (EV_P_ ev_stat *w)
2466	{	3106	{
2467	clear_pending (EV_A_ (W)w);	3107	clear_pending (EV_A_ (W)w);
2468	if (expect_false (!ev_is_active (w)))	3108	if (expect_false (!ev_is_active (w)))
2469	return;	3109	return;
2470		3110
		3111	EV_FREQUENT_CHECK;
		3112
2471	#if EV_USE_INOTIFY	3113	#if EV_USE_INOTIFY
2472	infy_del (EV_A_ w);	3114	infy_del (EV_A_ w);
2473	#endif	3115	#endif
2474	ev_timer_stop (EV_A_ &w->timer);	3116	ev_timer_stop (EV_A_ &w->timer);
2475		3117
2476	ev_stop (EV_A_ (W)w);	3118	ev_stop (EV_A_ (W)w);
		3119
		3120	EV_FREQUENT_CHECK;
2477	}	3121	}
2478	#endif	3122	#endif
2479		3123
2480	#if EV_IDLE_ENABLE	3124	#if EV_IDLE_ENABLE
2481	void	3125	void
…		…
2483	{	3127	{
2484	if (expect_false (ev_is_active (w)))	3128	if (expect_false (ev_is_active (w)))
2485	return;	3129	return;
2486		3130
2487	pri_adjust (EV_A_ (W)w);	3131	pri_adjust (EV_A_ (W)w);
		3132
		3133	EV_FREQUENT_CHECK;
2488		3134
2489	{	3135	{
2490	int active = ++idlecnt [ABSPRI (w)];	3136	int active = ++idlecnt [ABSPRI (w)];
2491		3137
2492	++idleall;	3138	++idleall;
2493	ev_start (EV_A_ (W)w, active);	3139	ev_start (EV_A_ (W)w, active);
2494		3140
2495	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);
2496	idles [ABSPRI (w)][active - 1] = w;	3142	idles [ABSPRI (w)][active - 1] = w;
2497	}	3143	}
		3144
		3145	EV_FREQUENT_CHECK;
2498	}	3146	}
2499		3147
2500	void	3148	void
2501	ev_idle_stop (EV_P_ ev_idle *w)	3149	ev_idle_stop (EV_P_ ev_idle *w)
2502	{	3150	{
2503	clear_pending (EV_A_ (W)w);	3151	clear_pending (EV_A_ (W)w);
2504	if (expect_false (!ev_is_active (w)))	3152	if (expect_false (!ev_is_active (w)))
2505	return;	3153	return;
2506		3154
		3155	EV_FREQUENT_CHECK;
		3156
2507	{	3157	{
2508	int active = ev_active (w);	3158	int active = ev_active (w);
2509		3159
2510	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3160	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2511	ev_active (idles [ABSPRI (w)][active - 1]) = active;	3161	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2512		3162
2513	ev_stop (EV_A_ (W)w);	3163	ev_stop (EV_A_ (W)w);
2514	--idleall;	3164	--idleall;
2515	}	3165	}
		3166
		3167	EV_FREQUENT_CHECK;
2516	}	3168	}
2517	#endif	3169	#endif
2518		3170
2519	void	3171	void
2520	ev_prepare_start (EV_P_ ev_prepare *w)	3172	ev_prepare_start (EV_P_ ev_prepare *w)
2521	{	3173	{
2522	if (expect_false (ev_is_active (w)))	3174	if (expect_false (ev_is_active (w)))
2523	return;	3175	return;
		3176
		3177	EV_FREQUENT_CHECK;
2524		3178
2525	ev_start (EV_A_ (W)w, ++preparecnt);	3179	ev_start (EV_A_ (W)w, ++preparecnt);
2526	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3180	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2527	prepares [preparecnt - 1] = w;	3181	prepares [preparecnt - 1] = w;
		3182
		3183	EV_FREQUENT_CHECK;
2528	}	3184	}
2529		3185
2530	void	3186	void
2531	ev_prepare_stop (EV_P_ ev_prepare *w)	3187	ev_prepare_stop (EV_P_ ev_prepare *w)
2532	{	3188	{
2533	clear_pending (EV_A_ (W)w);	3189	clear_pending (EV_A_ (W)w);
2534	if (expect_false (!ev_is_active (w)))	3190	if (expect_false (!ev_is_active (w)))
2535	return;	3191	return;
2536		3192
		3193	EV_FREQUENT_CHECK;
		3194
2537	{	3195	{
2538	int active = ev_active (w);	3196	int active = ev_active (w);
2539		3197
2540	prepares [active - 1] = prepares [--preparecnt];	3198	prepares [active - 1] = prepares [--preparecnt];
2541	ev_active (prepares [active - 1]) = active;	3199	ev_active (prepares [active - 1]) = active;
2542	}	3200	}
2543		3201
2544	ev_stop (EV_A_ (W)w);	3202	ev_stop (EV_A_ (W)w);
		3203
		3204	EV_FREQUENT_CHECK;
2545	}	3205	}
2546		3206
2547	void	3207	void
2548	ev_check_start (EV_P_ ev_check *w)	3208	ev_check_start (EV_P_ ev_check *w)
2549	{	3209	{
2550	if (expect_false (ev_is_active (w)))	3210	if (expect_false (ev_is_active (w)))
2551	return;	3211	return;
		3212
		3213	EV_FREQUENT_CHECK;
2552		3214
2553	ev_start (EV_A_ (W)w, ++checkcnt);	3215	ev_start (EV_A_ (W)w, ++checkcnt);
2554	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3216	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2555	checks [checkcnt - 1] = w;	3217	checks [checkcnt - 1] = w;
		3218
		3219	EV_FREQUENT_CHECK;
2556	}	3220	}
2557		3221
2558	void	3222	void
2559	ev_check_stop (EV_P_ ev_check *w)	3223	ev_check_stop (EV_P_ ev_check *w)
2560	{	3224	{
2561	clear_pending (EV_A_ (W)w);	3225	clear_pending (EV_A_ (W)w);
2562	if (expect_false (!ev_is_active (w)))	3226	if (expect_false (!ev_is_active (w)))
2563	return;	3227	return;
2564		3228
		3229	EV_FREQUENT_CHECK;
		3230
2565	{	3231	{
2566	int active = ev_active (w);	3232	int active = ev_active (w);
2567		3233
2568	checks [active - 1] = checks [--checkcnt];	3234	checks [active - 1] = checks [--checkcnt];
2569	ev_active (checks [active - 1]) = active;	3235	ev_active (checks [active - 1]) = active;
2570	}	3236	}
2571		3237
2572	ev_stop (EV_A_ (W)w);	3238	ev_stop (EV_A_ (W)w);
		3239
		3240	EV_FREQUENT_CHECK;
2573	}	3241	}
2574		3242
2575	#if EV_EMBED_ENABLE	3243	#if EV_EMBED_ENABLE
2576	void noinline	3244	void noinline
2577	ev_embed_sweep (EV_P_ ev_embed *w)	3245	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2594	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3262	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2595	{	3263	{
2596	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3264	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2597		3265
2598	{	3266	{
2599	struct ev_loop *loop = w->other;	3267	EV_P = w->other;
2600		3268
2601	while (fdchangecnt)	3269	while (fdchangecnt)
2602	{	3270	{
2603	fd_reify (EV_A);	3271	fd_reify (EV_A);
2604	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3272	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2605	}	3273	}
2606	}	3274	}
2607	}	3275	}
2608		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
2609	#if 0	3294	#if 0
2610	static void	3295	static void
2611	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3296	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2612	{	3297	{
2613	ev_idle_stop (EV_A_ idle);	3298	ev_idle_stop (EV_A_ idle);
…		…
2619	{	3304	{
2620	if (expect_false (ev_is_active (w)))	3305	if (expect_false (ev_is_active (w)))
2621	return;	3306	return;
2622		3307
2623	{	3308	{
2624	struct ev_loop *loop = w->other;	3309	EV_P = w->other;
2625	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 ()));
2626	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);
2627	}	3312	}
		3313
		3314	EV_FREQUENT_CHECK;
2628		3315
2629	ev_set_priority (&w->io, ev_priority (w));	3316	ev_set_priority (&w->io, ev_priority (w));
2630	ev_io_start (EV_A_ &w->io);	3317	ev_io_start (EV_A_ &w->io);
2631		3318
2632	ev_prepare_init (&w->prepare, embed_prepare_cb);	3319	ev_prepare_init (&w->prepare, embed_prepare_cb);
2633	ev_set_priority (&w->prepare, EV_MINPRI);	3320	ev_set_priority (&w->prepare, EV_MINPRI);
2634	ev_prepare_start (EV_A_ &w->prepare);	3321	ev_prepare_start (EV_A_ &w->prepare);
2635		3322
		3323	ev_fork_init (&w->fork, embed_fork_cb);
		3324	ev_fork_start (EV_A_ &w->fork);
		3325
2636	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3326	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2637		3327
2638	ev_start (EV_A_ (W)w, 1);	3328	ev_start (EV_A_ (W)w, 1);
		3329
		3330	EV_FREQUENT_CHECK;
2639	}	3331	}
2640		3332
2641	void	3333	void
2642	ev_embed_stop (EV_P_ ev_embed *w)	3334	ev_embed_stop (EV_P_ ev_embed *w)
2643	{	3335	{
2644	clear_pending (EV_A_ (W)w);	3336	clear_pending (EV_A_ (W)w);
2645	if (expect_false (!ev_is_active (w)))	3337	if (expect_false (!ev_is_active (w)))
2646	return;	3338	return;
2647		3339
		3340	EV_FREQUENT_CHECK;
		3341
2648	ev_io_stop (EV_A_ &w->io);	3342	ev_io_stop (EV_A_ &w->io);
2649	ev_prepare_stop (EV_A_ &w->prepare);	3343	ev_prepare_stop (EV_A_ &w->prepare);
		3344	ev_fork_stop (EV_A_ &w->fork);
2650		3345
2651	ev_stop (EV_A_ (W)w);	3346	EV_FREQUENT_CHECK;
2652	}	3347	}
2653	#endif	3348	#endif
2654		3349
2655	#if EV_FORK_ENABLE	3350	#if EV_FORK_ENABLE
2656	void	3351	void
2657	ev_fork_start (EV_P_ ev_fork *w)	3352	ev_fork_start (EV_P_ ev_fork *w)
2658	{	3353	{
2659	if (expect_false (ev_is_active (w)))	3354	if (expect_false (ev_is_active (w)))
2660	return;	3355	return;
		3356
		3357	EV_FREQUENT_CHECK;
2661		3358
2662	ev_start (EV_A_ (W)w, ++forkcnt);	3359	ev_start (EV_A_ (W)w, ++forkcnt);
2663	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3360	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2664	forks [forkcnt - 1] = w;	3361	forks [forkcnt - 1] = w;
		3362
		3363	EV_FREQUENT_CHECK;
2665	}	3364	}
2666		3365
2667	void	3366	void
2668	ev_fork_stop (EV_P_ ev_fork *w)	3367	ev_fork_stop (EV_P_ ev_fork *w)
2669	{	3368	{
2670	clear_pending (EV_A_ (W)w);	3369	clear_pending (EV_A_ (W)w);
2671	if (expect_false (!ev_is_active (w)))	3370	if (expect_false (!ev_is_active (w)))
2672	return;	3371	return;
2673		3372
		3373	EV_FREQUENT_CHECK;
		3374
2674	{	3375	{
2675	int active = ev_active (w);	3376	int active = ev_active (w);
2676		3377
2677	forks [active - 1] = forks [--forkcnt];	3378	forks [active - 1] = forks [--forkcnt];
2678	ev_active (forks [active - 1]) = active;	3379	ev_active (forks [active - 1]) = active;
2679	}	3380	}
2680		3381
2681	ev_stop (EV_A_ (W)w);	3382	ev_stop (EV_A_ (W)w);
		3383
		3384	EV_FREQUENT_CHECK;
2682	}	3385	}
2683	#endif	3386	#endif
2684		3387
2685	#if EV_ASYNC_ENABLE	3388	#if EV_ASYNC_ENABLE
2686	void	3389	void
…		…
2688	{	3391	{
2689	if (expect_false (ev_is_active (w)))	3392	if (expect_false (ev_is_active (w)))
2690	return;	3393	return;
2691		3394
2692	evpipe_init (EV_A);	3395	evpipe_init (EV_A);
		3396
		3397	EV_FREQUENT_CHECK;
2693		3398
2694	ev_start (EV_A_ (W)w, ++asynccnt);	3399	ev_start (EV_A_ (W)w, ++asynccnt);
2695	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3400	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2696	asyncs [asynccnt - 1] = w;	3401	asyncs [asynccnt - 1] = w;
		3402
		3403	EV_FREQUENT_CHECK;
2697	}	3404	}
2698		3405
2699	void	3406	void
2700	ev_async_stop (EV_P_ ev_async *w)	3407	ev_async_stop (EV_P_ ev_async *w)
2701	{	3408	{
2702	clear_pending (EV_A_ (W)w);	3409	clear_pending (EV_A_ (W)w);
2703	if (expect_false (!ev_is_active (w)))	3410	if (expect_false (!ev_is_active (w)))
2704	return;	3411	return;
2705		3412
		3413	EV_FREQUENT_CHECK;
		3414
2706	{	3415	{
2707	int active = ev_active (w);	3416	int active = ev_active (w);
2708		3417
2709	asyncs [active - 1] = asyncs [--asynccnt];	3418	asyncs [active - 1] = asyncs [--asynccnt];
2710	ev_active (asyncs [active - 1]) = active;	3419	ev_active (asyncs [active - 1]) = active;
2711	}	3420	}
2712		3421
2713	ev_stop (EV_A_ (W)w);	3422	ev_stop (EV_A_ (W)w);
		3423
		3424	EV_FREQUENT_CHECK;
2714	}	3425	}
2715		3426
2716	void	3427	void
2717	ev_async_send (EV_P_ ev_async *w)	3428	ev_async_send (EV_P_ ev_async *w)
2718	{	3429	{
2719	w->sent = 1;	3430	w->sent = 1;
2720	evpipe_write (EV_A_ &gotasync);	3431	evpipe_write (EV_A_ &async_pending);
2721	}	3432	}
2722	#endif	3433	#endif
2723		3434
2724	/*****************************************************************************/	3435	/*****************************************************************************/
2725		3436
…		…
2735	once_cb (EV_P_ struct ev_once *once, int revents)	3446	once_cb (EV_P_ struct ev_once *once, int revents)
2736	{	3447	{
2737	void (*cb)(int revents, void *arg) = once->cb;	3448	void (*cb)(int revents, void *arg) = once->cb;
2738	void *arg = once->arg;	3449	void *arg = once->arg;
2739		3450
2740	ev_io_stop (EV_A_ &once->io);	3451	ev_io_stop (EV_A_ &once->io);
2741	ev_timer_stop (EV_A_ &once->to);	3452	ev_timer_stop (EV_A_ &once->to);
2742	ev_free (once);	3453	ev_free (once);
2743		3454
2744	cb (revents, arg);	3455	cb (revents, arg);
2745	}	3456	}
2746		3457
2747	static void	3458	static void
2748	once_cb_io (EV_P_ ev_io *w, int revents)	3459	once_cb_io (EV_P_ ev_io *w, int revents)
2749	{	3460	{
2750	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));
2751	}	3464	}
2752		3465
2753	static void	3466	static void
2754	once_cb_to (EV_P_ ev_timer *w, int revents)	3467	once_cb_to (EV_P_ ev_timer *w, int revents)
2755	{	3468	{
2756	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));
2757	}	3472	}
2758		3473
2759	void	3474	void
2760	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)
2761	{	3476	{
…		…
2783	ev_timer_set (&once->to, timeout, 0.);	3498	ev_timer_set (&once->to, timeout, 0.);
2784	ev_timer_start (EV_A_ &once->to);	3499	ev_timer_start (EV_A_ &once->to);
2785	}	3500	}
2786	}	3501	}
2787		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
2788	#if EV_MULTIPLICITY	3611	#if EV_MULTIPLICITY
2789	#include "ev_wrap.h"	3612	#include "ev_wrap.h"
2790	#endif	3613	#endif
2791		3614
2792	#ifdef __cplusplus	3615	#ifdef __cplusplus

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