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Comparing libev/ev.c (file contents):
Revision 1.242 by root, Fri May 9 14:07:19 2008 UTC vs.
Revision 1.313 by root, Wed Aug 19 23:44:51 2009 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
47	# include EV_CONFIG_H	47	# include EV_CONFIG_H
48	# else	48	# else
49	# include "config.h"	49	# include "config.h"
50	# endif	50	# endif
51		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
		64	# endif
		65
52	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
55	# endif	69	# endif
56	# ifndef EV_USE_REALTIME	70	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	71	# define EV_USE_REALTIME 0
58	# endif	72	# endif
59	# else	73	# else
60	# ifndef EV_USE_MONOTONIC	74	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	75	# define EV_USE_MONOTONIC 0
62	# endif	76	# endif
…		…
119	# else	133	# else
120	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
121	# endif	135	# endif
122	# endif	136	# endif
123		137
		138	# ifndef EV_USE_SIGNALFD
		139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		140	# define EV_USE_SIGNALFD 1
		141	# else
		142	# define EV_USE_SIGNALFD 0
		143	# endif
		144	# endif
		145
124	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
125	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
126	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD 1
127	# else	149	# else
128	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
129	# endif	151	# endif
130	# endif	152	# endif
131		153
132	#endif	154	#endif
133		155
134	#include <math.h>	156	#include <math.h>
135	#include <stdlib.h>	157	#include <stdlib.h>
136	#include <fcntl.h>	158	#include <fcntl.h>
…		…
154	#ifndef _WIN32	176	#ifndef _WIN32
155	# include <sys/time.h>	177	# include <sys/time.h>
156	# include <sys/wait.h>	178	# include <sys/wait.h>
157	# include <unistd.h>	179	# include <unistd.h>
158	#else	180	#else
		181	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	182	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	183	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	184	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	185	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	186	# endif
164	#endif	187	#endif
165		188
166	/* this block tries to deduce configuration from header-defined symbols and defaults */	189	/* this block tries to deduce configuration from header-defined symbols and defaults */
167		190
		191	/* try to deduce the maximum number of signals on this platform */
		192	#if defined (EV_NSIG)
		193	/* use what's provided */
		194	#elif defined (NSIG)
		195	# define EV_NSIG (NSIG)
		196	#elif defined(_NSIG)
		197	# define EV_NSIG (_NSIG)
		198	#elif defined (SIGMAX)
		199	# define EV_NSIG (SIGMAX+1)
		200	#elif defined (SIG_MAX)
		201	# define EV_NSIG (SIG_MAX+1)
		202	#elif defined (_SIG_MAX)
		203	# define EV_NSIG (_SIG_MAX+1)
		204	#elif defined (MAXSIG)
		205	# define EV_NSIG (MAXSIG+1)
		206	#elif defined (MAX_SIG)
		207	# define EV_NSIG (MAX_SIG+1)
		208	#elif defined (SIGARRAYSIZE)
		209	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		210	#elif defined (_sys_nsig)
		211	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		212	#else
		213	# error "unable to find value for NSIG, please report"
		214	/* to make it compile regardless, just remove the above line */
		215	# define EV_NSIG 65
		216	#endif
		217
		218	#ifndef EV_USE_CLOCK_SYSCALL
		219	# if __linux && __GLIBC__ >= 2
		220	# define EV_USE_CLOCK_SYSCALL 1
		221	# else
		222	# define EV_USE_CLOCK_SYSCALL 0
		223	# endif
		224	#endif
		225
168	#ifndef EV_USE_MONOTONIC	226	#ifndef EV_USE_MONOTONIC
		227	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		228	# define EV_USE_MONOTONIC 1
		229	# else
169	# define EV_USE_MONOTONIC 0	230	# define EV_USE_MONOTONIC 0
		231	# endif
170	#endif	232	#endif
171		233
172	#ifndef EV_USE_REALTIME	234	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	235	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	236	#endif
175		237
176	#ifndef EV_USE_NANOSLEEP	238	#ifndef EV_USE_NANOSLEEP
		239	# if _POSIX_C_SOURCE >= 199309L
		240	# define EV_USE_NANOSLEEP 1
		241	# else
177	# define EV_USE_NANOSLEEP 0	242	# define EV_USE_NANOSLEEP 0
		243	# endif
178	#endif	244	#endif
179		245
180	#ifndef EV_USE_SELECT	246	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	247	# define EV_USE_SELECT 1
182	#endif	248	#endif
…		…
235	# else	301	# else
236	# define EV_USE_EVENTFD 0	302	# define EV_USE_EVENTFD 0
237	# endif	303	# endif
238	#endif	304	#endif
239		305
		306	#ifndef EV_USE_SIGNALFD
		307	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9))
		308	# define EV_USE_SIGNALFD 1
		309	# else
		310	# define EV_USE_SIGNALFD 0
		311	# endif
		312	#endif
		313
		314	#if 0 /* debugging */
		315	# define EV_VERIFY 3
		316	# define EV_USE_4HEAP 1
		317	# define EV_HEAP_CACHE_AT 1
		318	#endif
		319
		320	#ifndef EV_VERIFY
		321	# define EV_VERIFY !EV_MINIMAL
		322	#endif
		323
		324	#ifndef EV_USE_4HEAP
		325	# define EV_USE_4HEAP !EV_MINIMAL
		326	#endif
		327
		328	#ifndef EV_HEAP_CACHE_AT
		329	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		330	#endif
		331
		332	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		333	/* which makes programs even slower. might work on other unices, too. */
		334	#if EV_USE_CLOCK_SYSCALL
		335	# include <syscall.h>
		336	# ifdef SYS_clock_gettime
		337	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		338	# undef EV_USE_MONOTONIC
		339	# define EV_USE_MONOTONIC 1
		340	# else
		341	# undef EV_USE_CLOCK_SYSCALL
		342	# define EV_USE_CLOCK_SYSCALL 0
		343	# endif
		344	#endif
		345
240	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	346	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
241		347
242	#ifndef CLOCK_MONOTONIC	348	#ifndef CLOCK_MONOTONIC
243	# undef EV_USE_MONOTONIC	349	# undef EV_USE_MONOTONIC
244	# define EV_USE_MONOTONIC 0	350	# define EV_USE_MONOTONIC 0
…		…
259	# include <sys/select.h>	365	# include <sys/select.h>
260	# endif	366	# endif
261	#endif	367	#endif
262		368
263	#if EV_USE_INOTIFY	369	#if EV_USE_INOTIFY
		370	# include <sys/utsname.h>
		371	# include <sys/statfs.h>
264	# include <sys/inotify.h>	372	# include <sys/inotify.h>
		373	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		374	# ifndef IN_DONT_FOLLOW
		375	# undef EV_USE_INOTIFY
		376	# define EV_USE_INOTIFY 0
		377	# endif
265	#endif	378	#endif
266		379
267	#if EV_SELECT_IS_WINSOCKET	380	#if EV_SELECT_IS_WINSOCKET
268	# include <winsock.h>	381	# include <winsock.h>
269	#endif	382	#endif
270		383
271	#if EV_USE_EVENTFD	384	#if EV_USE_EVENTFD
272	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	385	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273	# include <stdint.h>	386	# include <stdint.h>
		387	# ifndef EFD_NONBLOCK
		388	# define EFD_NONBLOCK O_NONBLOCK
		389	# endif
		390	# ifndef EFD_CLOEXEC
		391	# ifdef O_CLOEXEC
		392	# define EFD_CLOEXEC O_CLOEXEC
		393	# else
		394	# define EFD_CLOEXEC 02000000
		395	# endif
		396	# endif
274	# ifdef __cplusplus	397	# ifdef __cplusplus
275	extern "C" {	398	extern "C" {
276	# endif	399	# endif
277	int eventfd (unsigned int initval, int flags);	400	int eventfd (unsigned int initval, int flags);
278	# ifdef __cplusplus	401	# ifdef __cplusplus
279	}	402	}
280	# endif	403	# endif
281	#endif	404	#endif
282		405
		406	#if EV_USE_SIGNALFD
		407	# include <sys/signalfd.h>
		408	#endif
		409
283	/**/	410	/**/
		411
		412	#if EV_VERIFY >= 3
		413	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		414	#else
		415	# define EV_FREQUENT_CHECK do { } while (0)
		416	#endif
284		417
285	/*	418	/*
286	* This is used to avoid floating point rounding problems.	419	* This is used to avoid floating point rounding problems.
287	* It is added to ev_rt_now when scheduling periodics	420	* It is added to ev_rt_now when scheduling periodics
288	* to ensure progress, time-wise, even when rounding	421	* to ensure progress, time-wise, even when rounding
…		…
315	# define inline_speed static noinline	448	# define inline_speed static noinline
316	#else	449	#else
317	# define inline_speed static inline	450	# define inline_speed static inline
318	#endif	451	#endif
319		452
320	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	453	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		454
		455	#if EV_MINPRI == EV_MAXPRI
		456	# define ABSPRI(w) (((W)w), 0)
		457	#else
321	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	458	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		459	#endif
322		460
323	#define EMPTY /* required for microsofts broken pseudo-c compiler */	461	#define EMPTY /* required for microsofts broken pseudo-c compiler */
324	#define EMPTY2(a,b) /* used to suppress some warnings */	462	#define EMPTY2(a,b) /* used to suppress some warnings */
325		463
326	typedef ev_watcher *W;	464	typedef ev_watcher *W;
…		…
328	typedef ev_watcher_time *WT;	466	typedef ev_watcher_time *WT;
329		467
330	#define ev_active(w) ((W)(w))->active	468	#define ev_active(w) ((W)(w))->active
331	#define ev_at(w) ((WT)(w))->at	469	#define ev_at(w) ((WT)(w))->at
332		470
333	#if EV_USE_MONOTONIC	471	#if EV_USE_REALTIME
334	/* 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 */
335	/* 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
336	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? */
		479	#endif
		480
		481	#ifndef EV_FD_TO_WIN32_HANDLE
		482	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		483	#endif
		484	#ifndef EV_WIN32_HANDLE_TO_FD
		485	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0)
		486	#endif
		487	#ifndef EV_WIN32_CLOSE_FD
		488	# define EV_WIN32_CLOSE_FD(fd) close (fd)
337	#endif	489	#endif
338		490
339	#ifdef _WIN32	491	#ifdef _WIN32
340	# include "ev_win32.c"	492	# include "ev_win32.c"
341	#endif	493	#endif
…		…
349	{	501	{
350	syserr_cb = cb;	502	syserr_cb = cb;
351	}	503	}
352		504
353	static void noinline	505	static void noinline
354	syserr (const char *msg)	506	ev_syserr (const char *msg)
355	{	507	{
356	if (!msg)	508	if (!msg)
357	msg = "(libev) system error";	509	msg = "(libev) system error";
358		510
359	if (syserr_cb)	511	if (syserr_cb)
…		…
405	#define ev_malloc(size) ev_realloc (0, (size))	557	#define ev_malloc(size) ev_realloc (0, (size))
406	#define ev_free(ptr) ev_realloc ((ptr), 0)	558	#define ev_free(ptr) ev_realloc ((ptr), 0)
407		559
408	/*****************************************************************************/	560	/*****************************************************************************/
409		561
		562	/* set in reify when reification needed */
		563	#define EV_ANFD_REIFY 1
		564
		565	/* file descriptor info structure */
410	typedef struct	566	typedef struct
411	{	567	{
412	WL head;	568	WL head;
413	unsigned char events;	569	unsigned char events; /* the events watched for */
		570	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		571	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
414	unsigned char reify;	572	unsigned char unused;
		573	#if EV_USE_EPOLL
		574	unsigned int egen; /* generation counter to counter epoll bugs */
		575	#endif
415	#if EV_SELECT_IS_WINSOCKET	576	#if EV_SELECT_IS_WINSOCKET
416	SOCKET handle;	577	SOCKET handle;
417	#endif	578	#endif
418	} ANFD;	579	} ANFD;
419		580
		581	/* stores the pending event set for a given watcher */
420	typedef struct	582	typedef struct
421	{	583	{
422	W w;	584	W w;
423	int events;	585	int events; /* the pending event set for the given watcher */
424	} ANPENDING;	586	} ANPENDING;
425		587
426	#if EV_USE_INOTIFY	588	#if EV_USE_INOTIFY
427	/* hash table entry per inotify-id */	589	/* hash table entry per inotify-id */
428	typedef struct	590	typedef struct
…		…
430	WL head;	592	WL head;
431	} ANFS;	593	} ANFS;
432	#endif	594	#endif
433		595
434	/* Heap Entry */	596	/* Heap Entry */
435	#define EV_HEAP_CACHE_AT 0
436	#if EV_HEAP_CACHE_AT	597	#if EV_HEAP_CACHE_AT
		598	/* a heap element */
437	typedef struct {	599	typedef struct {
		600	ev_tstamp at;
438	WT w;	601	WT w;
439	ev_tstamp at;
440	} ANHE;	602	} ANHE;
441		603
442	#define ANHE_w(he) (he).w /* access watcher, read-write */	604	#define ANHE_w(he) (he).w /* access watcher, read-write */
443	#define ANHE_at(he) (he).at /* access cached at, read-only */	605	#define ANHE_at(he) (he).at /* access cached at, read-only */
444	#define ANHE_at_set(he) (he).at = (he).w->at /* update at from watcher */	606	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
445	#else	607	#else
		608	/* a heap element */
446	typedef WT ANHE;	609	typedef WT ANHE;
447		610
448	#define ANHE_w(he) (he)	611	#define ANHE_w(he) (he)
449	#define ANHE_at(he) (he)->at	612	#define ANHE_at(he) (he)->at
450	#define ANHE_at_set(he)	613	#define ANHE_at_cache(he)
451	#endif	614	#endif
452		615
453	#if EV_MULTIPLICITY	616	#if EV_MULTIPLICITY
454		617
455	struct ev_loop	618	struct ev_loop
…		…
474		637
475	static int ev_default_loop_ptr;	638	static int ev_default_loop_ptr;
476		639
477	#endif	640	#endif
478		641
		642	#if EV_MINIMAL < 2
		643	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		644	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		645	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		646	#else
		647	# define EV_RELEASE_CB (void)0
		648	# define EV_ACQUIRE_CB (void)0
		649	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		650	#endif
		651
		652	#define EVUNLOOP_RECURSE 0x80
		653
479	/*****************************************************************************/	654	/*****************************************************************************/
480		655
		656	#ifndef EV_HAVE_EV_TIME
481	ev_tstamp	657	ev_tstamp
482	ev_time (void)	658	ev_time (void)
483	{	659	{
484	#if EV_USE_REALTIME	660	#if EV_USE_REALTIME
		661	if (expect_true (have_realtime))
		662	{
485	struct timespec ts;	663	struct timespec ts;
486	clock_gettime (CLOCK_REALTIME, &ts);	664	clock_gettime (CLOCK_REALTIME, &ts);
487	return ts.tv_sec + ts.tv_nsec * 1e-9;	665	return ts.tv_sec + ts.tv_nsec * 1e-9;
488	#else	666	}
		667	#endif
		668
489	struct timeval tv;	669	struct timeval tv;
490	gettimeofday (&tv, 0);	670	gettimeofday (&tv, 0);
491	return tv.tv_sec + tv.tv_usec * 1e-6;	671	return tv.tv_sec + tv.tv_usec * 1e-6;
492	#endif
493	}	672	}
		673	#endif
494		674
495	ev_tstamp inline_size	675	inline_size ev_tstamp
496	get_clock (void)	676	get_clock (void)
497	{	677	{
498	#if EV_USE_MONOTONIC	678	#if EV_USE_MONOTONIC
499	if (expect_true (have_monotonic))	679	if (expect_true (have_monotonic))
500	{	680	{
…		…
533	struct timeval tv;	713	struct timeval tv;
534		714
535	tv.tv_sec = (time_t)delay;	715	tv.tv_sec = (time_t)delay;
536	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	716	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
537		717
		718	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		719	/* something not guaranteed by newer posix versions, but guaranteed */
		720	/* by older ones */
538	select (0, 0, 0, 0, &tv);	721	select (0, 0, 0, 0, &tv);
539	#endif	722	#endif
540	}	723	}
541	}	724	}
542		725
543	/*****************************************************************************/	726	/*****************************************************************************/
544		727
545	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	728	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
546		729
547	int inline_size	730	/* find a suitable new size for the given array, */
		731	/* hopefully by rounding to a ncie-to-malloc size */
		732	inline_size int
548	array_nextsize (int elem, int cur, int cnt)	733	array_nextsize (int elem, int cur, int cnt)
549	{	734	{
550	int ncur = cur + 1;	735	int ncur = cur + 1;
551		736
552	do	737	do
…		…
569	array_realloc (int elem, void *base, int *cur, int cnt)	754	array_realloc (int elem, void *base, int *cur, int cnt)
570	{	755	{
571	*cur = array_nextsize (elem, *cur, cnt);	756	*cur = array_nextsize (elem, *cur, cnt);
572	return ev_realloc (base, elem * *cur);	757	return ev_realloc (base, elem * *cur);
573	}	758	}
		759
		760	#define array_init_zero(base,count) \
		761	memset ((void *)(base), 0, sizeof (*(base)) * (count))
574		762
575	#define array_needsize(type,base,cur,cnt,init) \	763	#define array_needsize(type,base,cur,cnt,init) \
576	if (expect_false ((cnt) > (cur))) \	764	if (expect_false ((cnt) > (cur))) \
577	{ \	765	{ \
578	int ocur_ = (cur); \	766	int ocur_ = (cur); \
…		…
590	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	778	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
591	}	779	}
592	#endif	780	#endif
593		781
594	#define array_free(stem, idx) \	782	#define array_free(stem, idx) \
595	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	783	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
596		784
597	/*****************************************************************************/	785	/*****************************************************************************/
		786
		787	/* dummy callback for pending events */
		788	static void noinline
		789	pendingcb (EV_P_ ev_prepare *w, int revents)
		790	{
		791	}
598		792
599	void noinline	793	void noinline
600	ev_feed_event (EV_P_ void *w, int revents)	794	ev_feed_event (EV_P_ void *w, int revents)
601	{	795	{
602	W w_ = (W)w;	796	W w_ = (W)w;
…		…
611	pendings [pri][w_->pending - 1].w = w_;	805	pendings [pri][w_->pending - 1].w = w_;
612	pendings [pri][w_->pending - 1].events = revents;	806	pendings [pri][w_->pending - 1].events = revents;
613	}	807	}
614	}	808	}
615		809
616	void inline_speed	810	inline_speed void
		811	feed_reverse (EV_P_ W w)
		812	{
		813	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		814	rfeeds [rfeedcnt++] = w;
		815	}
		816
		817	inline_size void
		818	feed_reverse_done (EV_P_ int revents)
		819	{
		820	do
		821	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		822	while (rfeedcnt);
		823	}
		824
		825	inline_speed void
617	queue_events (EV_P_ W *events, int eventcnt, int type)	826	queue_events (EV_P_ W *events, int eventcnt, int type)
618	{	827	{
619	int i;	828	int i;
620		829
621	for (i = 0; i < eventcnt; ++i)	830	for (i = 0; i < eventcnt; ++i)
622	ev_feed_event (EV_A_ events [i], type);	831	ev_feed_event (EV_A_ events [i], type);
623	}	832	}
624		833
625	/*****************************************************************************/	834	/*****************************************************************************/
626		835
627	void inline_size	836	inline_speed void
628	anfds_init (ANFD *base, int count)
629	{
630	while (count--)
631	{
632	base->head = 0;
633	base->events = EV_NONE;
634	base->reify = 0;
635
636	++base;
637	}
638	}
639
640	void inline_speed
641	fd_event (EV_P_ int fd, int revents)	837	fd_event_nc (EV_P_ int fd, int revents)
642	{	838	{
643	ANFD *anfd = anfds + fd;	839	ANFD *anfd = anfds + fd;
644	ev_io *w;	840	ev_io *w;
645		841
646	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	842	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
650	if (ev)	846	if (ev)
651	ev_feed_event (EV_A_ (W)w, ev);	847	ev_feed_event (EV_A_ (W)w, ev);
652	}	848	}
653	}	849	}
654		850
		851	/* do not submit kernel events for fds that have reify set */
		852	/* because that means they changed while we were polling for new events */
		853	inline_speed void
		854	fd_event (EV_P_ int fd, int revents)
		855	{
		856	ANFD *anfd = anfds + fd;
		857
		858	if (expect_true (!anfd->reify))
		859	fd_event_nc (EV_A_ fd, revents);
		860	}
		861
655	void	862	void
656	ev_feed_fd_event (EV_P_ int fd, int revents)	863	ev_feed_fd_event (EV_P_ int fd, int revents)
657	{	864	{
658	if (fd >= 0 && fd < anfdmax)	865	if (fd >= 0 && fd < anfdmax)
659	fd_event (EV_A_ fd, revents);	866	fd_event_nc (EV_A_ fd, revents);
660	}	867	}
661		868
662	void inline_size	869	/* make sure the external fd watch events are in-sync */
		870	/* with the kernel/libev internal state */
		871	inline_size void
663	fd_reify (EV_P)	872	fd_reify (EV_P)
664	{	873	{
665	int i;	874	int i;
666		875
667	for (i = 0; i < fdchangecnt; ++i)	876	for (i = 0; i < fdchangecnt; ++i)
…		…
676	events |= (unsigned char)w->events;	885	events |= (unsigned char)w->events;
677		886
678	#if EV_SELECT_IS_WINSOCKET	887	#if EV_SELECT_IS_WINSOCKET
679	if (events)	888	if (events)
680	{	889	{
681	unsigned long argp;	890	unsigned long arg;
682	#ifdef EV_FD_TO_WIN32_HANDLE
683	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	891	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
684	#else
685	anfd->handle = _get_osfhandle (fd);
686	#endif
687	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	892	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
688	}	893	}
689	#endif	894	#endif
690		895
691	{	896	{
692	unsigned char o_events = anfd->events;	897	unsigned char o_events = anfd->events;
693	unsigned char o_reify = anfd->reify;	898	unsigned char o_reify = anfd->reify;
694		899
695	anfd->reify = 0;	900	anfd->reify = 0;
696	anfd->events = events;	901	anfd->events = events;
697		902
698	if (o_events != events || o_reify & EV_IOFDSET)	903	if (o_events != events || o_reify & EV__IOFDSET)
699	backend_modify (EV_A_ fd, o_events, events);	904	backend_modify (EV_A_ fd, o_events, events);
700	}	905	}
701	}	906	}
702		907
703	fdchangecnt = 0;	908	fdchangecnt = 0;
704	}	909	}
705		910
706	void inline_size	911	/* something about the given fd changed */
		912	inline_size void
707	fd_change (EV_P_ int fd, int flags)	913	fd_change (EV_P_ int fd, int flags)
708	{	914	{
709	unsigned char reify = anfds [fd].reify;	915	unsigned char reify = anfds [fd].reify;
710	anfds [fd].reify |= flags;	916	anfds [fd].reify |= flags;
711		917
…		…
715	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	921	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
716	fdchanges [fdchangecnt - 1] = fd;	922	fdchanges [fdchangecnt - 1] = fd;
717	}	923	}
718	}	924	}
719		925
720	void inline_speed	926	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		927	inline_speed void
721	fd_kill (EV_P_ int fd)	928	fd_kill (EV_P_ int fd)
722	{	929	{
723	ev_io *w;	930	ev_io *w;
724		931
725	while ((w = (ev_io *)anfds [fd].head))	932	while ((w = (ev_io *)anfds [fd].head))
…		…
727	ev_io_stop (EV_A_ w);	934	ev_io_stop (EV_A_ w);
728	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	935	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
729	}	936	}
730	}	937	}
731		938
732	int inline_size	939	/* check whether the given fd is atcually valid, for error recovery */
		940	inline_size int
733	fd_valid (int fd)	941	fd_valid (int fd)
734	{	942	{
735	#ifdef _WIN32	943	#ifdef _WIN32
736	return _get_osfhandle (fd) != -1;	944	return _get_osfhandle (fd) != -1;
737	#else	945	#else
…		…
745	{	953	{
746	int fd;	954	int fd;
747		955
748	for (fd = 0; fd < anfdmax; ++fd)	956	for (fd = 0; fd < anfdmax; ++fd)
749	if (anfds [fd].events)	957	if (anfds [fd].events)
750	if (!fd_valid (fd) == -1 && errno == EBADF)	958	if (!fd_valid (fd) && errno == EBADF)
751	fd_kill (EV_A_ fd);	959	fd_kill (EV_A_ fd);
752	}	960	}
753		961
754	/* called on ENOMEM in select/poll to kill some fds and retry */	962	/* called on ENOMEM in select/poll to kill some fds and retry */
755	static void noinline	963	static void noinline
…		…
759		967
760	for (fd = anfdmax; fd--; )	968	for (fd = anfdmax; fd--; )
761	if (anfds [fd].events)	969	if (anfds [fd].events)
762	{	970	{
763	fd_kill (EV_A_ fd);	971	fd_kill (EV_A_ fd);
764	return;	972	break;
765	}	973	}
766	}	974	}
767		975
768	/* usually called after fork if backend needs to re-arm all fds from scratch */	976	/* usually called after fork if backend needs to re-arm all fds from scratch */
769	static void noinline	977	static void noinline
…		…
773		981
774	for (fd = 0; fd < anfdmax; ++fd)	982	for (fd = 0; fd < anfdmax; ++fd)
775	if (anfds [fd].events)	983	if (anfds [fd].events)
776	{	984	{
777	anfds [fd].events = 0;	985	anfds [fd].events = 0;
		986	anfds [fd].emask = 0;
778	fd_change (EV_A_ fd, EV_IOFDSET | 1);	987	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
779	}	988	}
780	}	989	}
781		990
782	/*****************************************************************************/	991	/*****************************************************************************/
783		992
…		…
791	* at the moment we allow libev the luxury of two heaps,	1000	* at the moment we allow libev the luxury of two heaps,
792	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap	1001	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
793	* which is more cache-efficient.	1002	* which is more cache-efficient.
794	* the difference is about 5% with 50000+ watchers.	1003	* the difference is about 5% with 50000+ watchers.
795	*/	1004	*/
796	#define EV_USE_4HEAP !EV_MINIMAL
797	#if EV_USE_4HEAP	1005	#if EV_USE_4HEAP
798		1006
799	#define DHEAP 4	1007	#define DHEAP 4
800	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	1008	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
801		1009	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
802	/* towards the root */	1010	#define UPHEAP_DONE(p,k) ((p) == (k))
803	void inline_speed
804	upheap (ANHE *heap, int k)
805	{
806	ANHE he = heap [k];
807
808	for (;;)
809	{
810	int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
811
812	if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
813	break;
814
815	heap [k] = heap [p];
816	ev_active (ANHE_w (heap [k])) = k;
817	k = p;
818	}
819
820	ev_active (ANHE_w (he)) = k;
821	heap [k] = he;
822	}
823		1011
824	/* away from the root */	1012	/* away from the root */
825	void inline_speed	1013	inline_speed void
826	downheap (ANHE *heap, int N, int k)	1014	downheap (ANHE *heap, int N, int k)
827	{	1015	{
828	ANHE he = heap [k];	1016	ANHE he = heap [k];
829	ANHE *E = heap + N + HEAP0;	1017	ANHE *E = heap + N + HEAP0;
830		1018
831	for (;;)	1019	for (;;)
832	{	1020	{
833	ev_tstamp minat;	1021	ev_tstamp minat;
834	ANHE *minpos;	1022	ANHE *minpos;
835	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0;	1023	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
836		1024
837	// find minimum child	1025	/* find minimum child */
838	if (expect_true (pos + DHEAP - 1 < E))	1026	if (expect_true (pos + DHEAP - 1 < E))
839	{	1027	{
840	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));	1028	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
841	if (ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));	1029	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
842	if (ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));	1030	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
843	if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));	1031	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
844	}	1032	}
845	else if (pos < E)	1033	else if (pos < E)
846	{	1034	{
847	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));	1035	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
848	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));	1036	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
…		…
853	break;	1041	break;
854		1042
855	if (ANHE_at (he) <= minat)	1043	if (ANHE_at (he) <= minat)
856	break;	1044	break;
857		1045
		1046	heap [k] = *minpos;
858	ev_active (ANHE_w (*minpos)) = k;	1047	ev_active (ANHE_w (*minpos)) = k;
859	heap [k] = *minpos;
860		1048
861	k = minpos - heap;	1049	k = minpos - heap;
862	}	1050	}
863		1051
		1052	heap [k] = he;
864	ev_active (ANHE_w (he)) = k;	1053	ev_active (ANHE_w (he)) = k;
865	heap [k] = he;
866	}	1054	}
867		1055
868	#else // 4HEAP	1056	#else /* 4HEAP */
869		1057
870	#define HEAP0 1	1058	#define HEAP0 1
		1059	#define HPARENT(k) ((k) >> 1)
		1060	#define UPHEAP_DONE(p,k) (!(p))
871		1061
872	/* towards the root */	1062	/* away from the root */
873	void inline_speed	1063	inline_speed void
874	upheap (ANHE *heap, int k)	1064	downheap (ANHE *heap, int N, int k)
875	{	1065	{
876	ANHE he = heap [k];	1066	ANHE he = heap [k];
877		1067
878	for (;;)	1068	for (;;)
879	{	1069	{
880	int p = k >> 1;	1070	int c = k << 1;
881		1071
882	/* maybe we could use a dummy element at heap [0]? */	1072	if (c >= N + HEAP0)
883	if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
884	break;	1073	break;
885		1074
886	heap [k] = heap [p];
887	ev_active (ANHE_w (heap [k])) = k;
888	k = p;
889	}
890
891	heap [k] = w;
892	ev_active (ANHE_w (heap [k])) = k;
893	}
894
895	/* away from the root */
896	void inline_speed
897	downheap (ANHE *heap, int N, int k)
898	{
899	ANHE he = heap [k];
900
901	for (;;)
902	{
903	int c = k << 1;
904
905	if (c > N)
906	break;
907
908	c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1075	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
909	? 1 : 0;	1076	? 1 : 0;
910		1077
911	if (w->at <= ANHE_at (heap [c]))	1078	if (ANHE_at (he) <= ANHE_at (heap [c]))
912	break;	1079	break;
913		1080
914	heap [k] = heap [c];	1081	heap [k] = heap [c];
915	ev_active (ANHE_w (heap [k])) = k;	1082	ev_active (ANHE_w (heap [k])) = k;
916		1083
…		…
920	heap [k] = he;	1087	heap [k] = he;
921	ev_active (ANHE_w (he)) = k;	1088	ev_active (ANHE_w (he)) = k;
922	}	1089	}
923	#endif	1090	#endif
924		1091
925	void inline_size	1092	/* towards the root */
		1093	inline_speed void
		1094	upheap (ANHE *heap, int k)
		1095	{
		1096	ANHE he = heap [k];
		1097
		1098	for (;;)
		1099	{
		1100	int p = HPARENT (k);
		1101
		1102	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1103	break;
		1104
		1105	heap [k] = heap [p];
		1106	ev_active (ANHE_w (heap [k])) = k;
		1107	k = p;
		1108	}
		1109
		1110	heap [k] = he;
		1111	ev_active (ANHE_w (he)) = k;
		1112	}
		1113
		1114	/* move an element suitably so it is in a correct place */
		1115	inline_size void
926	adjustheap (ANHE *heap, int N, int k)	1116	adjustheap (ANHE *heap, int N, int k)
927	{	1117	{
		1118	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
928	upheap (heap, k);	1119	upheap (heap, k);
		1120	else
929	downheap (heap, N, k);	1121	downheap (heap, N, k);
		1122	}
		1123
		1124	/* rebuild the heap: this function is used only once and executed rarely */
		1125	inline_size void
		1126	reheap (ANHE *heap, int N)
		1127	{
		1128	int i;
		1129
		1130	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1131	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1132	for (i = 0; i < N; ++i)
		1133	upheap (heap, i + HEAP0);
930	}	1134	}
931		1135
932	/*****************************************************************************/	1136	/*****************************************************************************/
933		1137
		1138	/* associate signal watchers to a signal signal */
934	typedef struct	1139	typedef struct
935	{	1140	{
		1141	EV_ATOMIC_T pending;
		1142	#if EV_MULTIPLICITY
		1143	EV_P;
		1144	#endif
936	WL head;	1145	WL head;
937	EV_ATOMIC_T gotsig;
938	} ANSIG;	1146	} ANSIG;
939		1147
940	static ANSIG *signals;	1148	static ANSIG signals [EV_NSIG - 1];
941	static int signalmax;
942
943	static EV_ATOMIC_T gotsig;
944
945	void inline_size
946	signals_init (ANSIG *base, int count)
947	{
948	while (count--)
949	{
950	base->head = 0;
951	base->gotsig = 0;
952
953	++base;
954	}
955	}
956		1149
957	/*****************************************************************************/	1150	/*****************************************************************************/
958		1151
959	void inline_speed	1152	/* used to prepare libev internal fd's */
		1153	/* this is not fork-safe */
		1154	inline_speed void
960	fd_intern (int fd)	1155	fd_intern (int fd)
961	{	1156	{
962	#ifdef _WIN32	1157	#ifdef _WIN32
963	int arg = 1;	1158	unsigned long arg = 1;
964	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1159	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
965	#else	1160	#else
966	fcntl (fd, F_SETFD, FD_CLOEXEC);	1161	fcntl (fd, F_SETFD, FD_CLOEXEC);
967	fcntl (fd, F_SETFL, O_NONBLOCK);	1162	fcntl (fd, F_SETFL, O_NONBLOCK);
968	#endif	1163	#endif
969	}	1164	}
970		1165
971	static void noinline	1166	static void noinline
972	evpipe_init (EV_P)	1167	evpipe_init (EV_P)
973	{	1168	{
974	if (!ev_is_active (&pipeev))	1169	if (!ev_is_active (&pipe_w))
975	{	1170	{
976	#if EV_USE_EVENTFD	1171	#if EV_USE_EVENTFD
		1172	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1173	if (evfd < 0 && errno == EINVAL)
977	if ((evfd = eventfd (0, 0)) >= 0)	1174	evfd = eventfd (0, 0);
		1175
		1176	if (evfd >= 0)
978	{	1177	{
979	evpipe [0] = -1;	1178	evpipe [0] = -1;
980	fd_intern (evfd);	1179	fd_intern (evfd); /* doing it twice doesn't hurt */
981	ev_io_set (&pipeev, evfd, EV_READ);	1180	ev_io_set (&pipe_w, evfd, EV_READ);
982	}	1181	}
983	else	1182	else
984	#endif	1183	#endif
985	{	1184	{
986	while (pipe (evpipe))	1185	while (pipe (evpipe))
987	syserr ("(libev) error creating signal/async pipe");	1186	ev_syserr ("(libev) error creating signal/async pipe");
988		1187
989	fd_intern (evpipe [0]);	1188	fd_intern (evpipe [0]);
990	fd_intern (evpipe [1]);	1189	fd_intern (evpipe [1]);
991	ev_io_set (&pipeev, evpipe [0], EV_READ);	1190	ev_io_set (&pipe_w, evpipe [0], EV_READ);
992	}	1191	}
993		1192
994	ev_io_start (EV_A_ &pipeev);	1193	ev_io_start (EV_A_ &pipe_w);
995	ev_unref (EV_A); /* watcher should not keep loop alive */	1194	ev_unref (EV_A); /* watcher should not keep loop alive */
996	}	1195	}
997	}	1196	}
998		1197
999	void inline_size	1198	inline_size void
1000	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1199	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1001	{	1200	{
1002	if (!*flag)	1201	if (!*flag)
1003	{	1202	{
1004	int old_errno = errno; /* save errno because write might clobber it */	1203	int old_errno = errno; /* save errno because write might clobber it */
…		…
1017		1216
1018	errno = old_errno;	1217	errno = old_errno;
1019	}	1218	}
1020	}	1219	}
1021		1220
		1221	/* called whenever the libev signal pipe */
		1222	/* got some events (signal, async) */
1022	static void	1223	static void
1023	pipecb (EV_P_ ev_io *iow, int revents)	1224	pipecb (EV_P_ ev_io *iow, int revents)
1024	{	1225	{
		1226	int i;
		1227
1025	#if EV_USE_EVENTFD	1228	#if EV_USE_EVENTFD
1026	if (evfd >= 0)	1229	if (evfd >= 0)
1027	{	1230	{
1028	uint64_t counter;	1231	uint64_t counter;
1029	read (evfd, &counter, sizeof (uint64_t));	1232	read (evfd, &counter, sizeof (uint64_t));
…		…
1033	{	1236	{
1034	char dummy;	1237	char dummy;
1035	read (evpipe [0], &dummy, 1);	1238	read (evpipe [0], &dummy, 1);
1036	}	1239	}
1037		1240
1038	if (gotsig && ev_is_default_loop (EV_A))	1241	if (sig_pending)
1039	{	1242	{
1040	int signum;	1243	sig_pending = 0;
1041	gotsig = 0;
1042		1244
1043	for (signum = signalmax; signum--; )	1245	for (i = EV_NSIG - 1; i--; )
1044	if (signals [signum].gotsig)	1246	if (expect_false (signals [i].pending))
1045	ev_feed_signal_event (EV_A_ signum + 1);	1247	ev_feed_signal_event (EV_A_ i + 1);
1046	}	1248	}
1047		1249
1048	#if EV_ASYNC_ENABLE	1250	#if EV_ASYNC_ENABLE
1049	if (gotasync)	1251	if (async_pending)
1050	{	1252	{
1051	int i;	1253	async_pending = 0;
1052	gotasync = 0;
1053		1254
1054	for (i = asynccnt; i--; )	1255	for (i = asynccnt; i--; )
1055	if (asyncs [i]->sent)	1256	if (asyncs [i]->sent)
1056	{	1257	{
1057	asyncs [i]->sent = 0;	1258	asyncs [i]->sent = 0;
…		…
1065		1266
1066	static void	1267	static void
1067	ev_sighandler (int signum)	1268	ev_sighandler (int signum)
1068	{	1269	{
1069	#if EV_MULTIPLICITY	1270	#if EV_MULTIPLICITY
1070	struct ev_loop *loop = &default_loop_struct;	1271	EV_P = signals [signum - 1].loop;
1071	#endif	1272	#endif
1072		1273
1073	#if _WIN32	1274	#if _WIN32
1074	signal (signum, ev_sighandler);	1275	signal (signum, ev_sighandler);
1075	#endif	1276	#endif
1076		1277
1077	signals [signum - 1].gotsig = 1;	1278	signals [signum - 1].pending = 1;
1078	evpipe_write (EV_A_ &gotsig);	1279	evpipe_write (EV_A_ &sig_pending);
1079	}	1280	}
1080		1281
1081	void noinline	1282	void noinline
1082	ev_feed_signal_event (EV_P_ int signum)	1283	ev_feed_signal_event (EV_P_ int signum)
1083	{	1284	{
1084	WL w;	1285	WL w;
1085		1286
		1287	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1288	return;
		1289
		1290	--signum;
		1291
1086	#if EV_MULTIPLICITY	1292	#if EV_MULTIPLICITY
1087	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1293	/* it is permissible to try to feed a signal to the wrong loop */
1088	#endif	1294	/* or, likely more useful, feeding a signal nobody is waiting for */
1089		1295
1090	--signum;	1296	if (expect_false (signals [signum].loop != EV_A))
1091
1092	if (signum < 0 || signum >= signalmax)
1093	return;	1297	return;
		1298	#endif
1094		1299
1095	signals [signum].gotsig = 0;	1300	signals [signum].pending = 0;
1096		1301
1097	for (w = signals [signum].head; w; w = w->next)	1302	for (w = signals [signum].head; w; w = w->next)
1098	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1303	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1099	}	1304	}
1100		1305
		1306	#if EV_USE_SIGNALFD
		1307	static void
		1308	sigfdcb (EV_P_ ev_io *iow, int revents)
		1309	{
		1310	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1311
		1312	for (;;)
		1313	{
		1314	ssize_t res = read (sigfd, si, sizeof (si));
		1315
		1316	/* not ISO-C, as res might be -1, but works with SuS */
		1317	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1318	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1319
		1320	if (res < (ssize_t)sizeof (si))
		1321	break;
		1322	}
		1323	}
		1324	#endif
		1325
1101	/*****************************************************************************/	1326	/*****************************************************************************/
1102		1327
1103	static WL childs [EV_PID_HASHSIZE];	1328	static WL childs [EV_PID_HASHSIZE];
1104		1329
1105	#ifndef _WIN32	1330	#ifndef _WIN32
…		…
1108		1333
1109	#ifndef WIFCONTINUED	1334	#ifndef WIFCONTINUED
1110	# define WIFCONTINUED(status) 0	1335	# define WIFCONTINUED(status) 0
1111	#endif	1336	#endif
1112		1337
1113	void inline_speed	1338	/* handle a single child status event */
		1339	inline_speed void
1114	child_reap (EV_P_ int chain, int pid, int status)	1340	child_reap (EV_P_ int chain, int pid, int status)
1115	{	1341	{
1116	ev_child *w;	1342	ev_child *w;
1117	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1343	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1118		1344
…		…
1131		1357
1132	#ifndef WCONTINUED	1358	#ifndef WCONTINUED
1133	# define WCONTINUED 0	1359	# define WCONTINUED 0
1134	#endif	1360	#endif
1135		1361
		1362	/* called on sigchld etc., calls waitpid */
1136	static void	1363	static void
1137	childcb (EV_P_ ev_signal *sw, int revents)	1364	childcb (EV_P_ ev_signal *sw, int revents)
1138	{	1365	{
1139	int pid, status;	1366	int pid, status;
1140		1367
…		…
1221	/* kqueue is borked on everything but netbsd apparently */	1448	/* kqueue is borked on everything but netbsd apparently */
1222	/* it usually doesn't work correctly on anything but sockets and pipes */	1449	/* it usually doesn't work correctly on anything but sockets and pipes */
1223	flags &= ~EVBACKEND_KQUEUE;	1450	flags &= ~EVBACKEND_KQUEUE;
1224	#endif	1451	#endif
1225	#ifdef __APPLE__	1452	#ifdef __APPLE__
1226	// flags &= ~EVBACKEND_KQUEUE; for documentation	1453	/* only select works correctly on that "unix-certified" platform */
1227	flags &= ~EVBACKEND_POLL;	1454	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1455	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1228	#endif	1456	#endif
1229		1457
1230	return flags;	1458	return flags;
1231	}	1459	}
1232		1460
…		…
1246	ev_backend (EV_P)	1474	ev_backend (EV_P)
1247	{	1475	{
1248	return backend;	1476	return backend;
1249	}	1477	}
1250		1478
		1479	#if EV_MINIMAL < 2
1251	unsigned int	1480	unsigned int
1252	ev_loop_count (EV_P)	1481	ev_loop_count (EV_P)
1253	{	1482	{
1254	return loop_count;	1483	return loop_count;
1255	}	1484	}
1256		1485
		1486	unsigned int
		1487	ev_loop_depth (EV_P)
		1488	{
		1489	return loop_depth;
		1490	}
		1491
1257	void	1492	void
1258	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1493	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1259	{	1494	{
1260	io_blocktime = interval;	1495	io_blocktime = interval;
1261	}	1496	}
…		…
1264	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1499	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1265	{	1500	{
1266	timeout_blocktime = interval;	1501	timeout_blocktime = interval;
1267	}	1502	}
1268		1503
		1504	void
		1505	ev_set_userdata (EV_P_ void *data)
		1506	{
		1507	userdata = data;
		1508	}
		1509
		1510	void *
		1511	ev_userdata (EV_P)
		1512	{
		1513	return userdata;
		1514	}
		1515
		1516	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1517	{
		1518	invoke_cb = invoke_pending_cb;
		1519	}
		1520
		1521	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1522	{
		1523	release_cb = release;
		1524	acquire_cb = acquire;
		1525	}
		1526	#endif
		1527
		1528	/* initialise a loop structure, must be zero-initialised */
1269	static void noinline	1529	static void noinline
1270	loop_init (EV_P_ unsigned int flags)	1530	loop_init (EV_P_ unsigned int flags)
1271	{	1531	{
1272	if (!backend)	1532	if (!backend)
1273	{	1533	{
		1534	#if EV_USE_REALTIME
		1535	if (!have_realtime)
		1536	{
		1537	struct timespec ts;
		1538
		1539	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1540	have_realtime = 1;
		1541	}
		1542	#endif
		1543
1274	#if EV_USE_MONOTONIC	1544	#if EV_USE_MONOTONIC
		1545	if (!have_monotonic)
1275	{	1546	{
1276	struct timespec ts;	1547	struct timespec ts;
		1548
1277	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1549	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1278	have_monotonic = 1;	1550	have_monotonic = 1;
1279	}	1551	}
1280	#endif	1552	#endif
		1553
		1554	/* pid check not overridable via env */
		1555	#ifndef _WIN32
		1556	if (flags & EVFLAG_FORKCHECK)
		1557	curpid = getpid ();
		1558	#endif
		1559
		1560	if (!(flags & EVFLAG_NOENV)
		1561	&& !enable_secure ()
		1562	&& getenv ("LIBEV_FLAGS"))
		1563	flags = atoi (getenv ("LIBEV_FLAGS"));
1281		1564
1282	ev_rt_now = ev_time ();	1565	ev_rt_now = ev_time ();
1283	mn_now = get_clock ();	1566	mn_now = get_clock ();
1284	now_floor = mn_now;	1567	now_floor = mn_now;
1285	rtmn_diff = ev_rt_now - mn_now;	1568	rtmn_diff = ev_rt_now - mn_now;
		1569	#if EV_MINIMAL < 2
		1570	invoke_cb = ev_invoke_pending;
		1571	#endif
1286		1572
1287	io_blocktime = 0.;	1573	io_blocktime = 0.;
1288	timeout_blocktime = 0.;	1574	timeout_blocktime = 0.;
1289	backend = 0;	1575	backend = 0;
1290	backend_fd = -1;	1576	backend_fd = -1;
1291	gotasync = 0;	1577	sig_pending = 0;
		1578	#if EV_ASYNC_ENABLE
		1579	async_pending = 0;
		1580	#endif
1292	#if EV_USE_INOTIFY	1581	#if EV_USE_INOTIFY
1293	fs_fd = -2;	1582	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1294	#endif	1583	#endif
1295		1584	#if EV_USE_SIGNALFD
1296	/* pid check not overridable via env */	1585	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1297	#ifndef _WIN32
1298	if (flags & EVFLAG_FORKCHECK)
1299	curpid = getpid ();
1300	#endif	1586	#endif
1301
1302	if (!(flags & EVFLAG_NOENV)
1303	&& !enable_secure ()
1304	&& getenv ("LIBEV_FLAGS"))
1305	flags = atoi (getenv ("LIBEV_FLAGS"));
1306		1587
1307	if (!(flags & 0x0000ffffU))	1588	if (!(flags & 0x0000ffffU))
1308	flags |= ev_recommended_backends ();	1589	flags |= ev_recommended_backends ();
1309		1590
1310	#if EV_USE_PORT	1591	#if EV_USE_PORT
…		…
1321	#endif	1602	#endif
1322	#if EV_USE_SELECT	1603	#if EV_USE_SELECT
1323	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1604	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1324	#endif	1605	#endif
1325		1606
		1607	ev_prepare_init (&pending_w, pendingcb);
		1608
1326	ev_init (&pipeev, pipecb);	1609	ev_init (&pipe_w, pipecb);
1327	ev_set_priority (&pipeev, EV_MAXPRI);	1610	ev_set_priority (&pipe_w, EV_MAXPRI);
1328	}	1611	}
1329	}	1612	}
1330		1613
		1614	/* free up a loop structure */
1331	static void noinline	1615	static void noinline
1332	loop_destroy (EV_P)	1616	loop_destroy (EV_P)
1333	{	1617	{
1334	int i;	1618	int i;
1335		1619
1336	if (ev_is_active (&pipeev))	1620	if (ev_is_active (&pipe_w))
1337	{	1621	{
1338	ev_ref (EV_A); /* signal watcher */	1622	/*ev_ref (EV_A);*/
1339	ev_io_stop (EV_A_ &pipeev);	1623	/*ev_io_stop (EV_A_ &pipe_w);*/
1340		1624
1341	#if EV_USE_EVENTFD	1625	#if EV_USE_EVENTFD
1342	if (evfd >= 0)	1626	if (evfd >= 0)
1343	close (evfd);	1627	close (evfd);
1344	#endif	1628	#endif
1345		1629
1346	if (evpipe [0] >= 0)	1630	if (evpipe [0] >= 0)
1347	{	1631	{
1348	close (evpipe [0]);	1632	EV_WIN32_CLOSE_FD (evpipe [0]);
1349	close (evpipe [1]);	1633	EV_WIN32_CLOSE_FD (evpipe [1]);
1350	}	1634	}
1351	}	1635	}
		1636
		1637	#if EV_USE_SIGNALFD
		1638	if (ev_is_active (&sigfd_w))
		1639	{
		1640	/*ev_ref (EV_A);*/
		1641	/*ev_io_stop (EV_A_ &sigfd_w);*/
		1642
		1643	close (sigfd);
		1644	}
		1645	#endif
1352		1646
1353	#if EV_USE_INOTIFY	1647	#if EV_USE_INOTIFY
1354	if (fs_fd >= 0)	1648	if (fs_fd >= 0)
1355	close (fs_fd);	1649	close (fs_fd);
1356	#endif	1650	#endif
…		…
1380	#if EV_IDLE_ENABLE	1674	#if EV_IDLE_ENABLE
1381	array_free (idle, [i]);	1675	array_free (idle, [i]);
1382	#endif	1676	#endif
1383	}	1677	}
1384		1678
1385	ev_free (anfds); anfdmax = 0;	1679	ev_free (anfds); anfds = 0; anfdmax = 0;
1386		1680
1387	/* have to use the microsoft-never-gets-it-right macro */	1681	/* have to use the microsoft-never-gets-it-right macro */
		1682	array_free (rfeed, EMPTY);
1388	array_free (fdchange, EMPTY);	1683	array_free (fdchange, EMPTY);
1389	array_free (timer, EMPTY);	1684	array_free (timer, EMPTY);
1390	#if EV_PERIODIC_ENABLE	1685	#if EV_PERIODIC_ENABLE
1391	array_free (periodic, EMPTY);	1686	array_free (periodic, EMPTY);
1392	#endif	1687	#endif
…		…
1401		1696
1402	backend = 0;	1697	backend = 0;
1403	}	1698	}
1404		1699
1405	#if EV_USE_INOTIFY	1700	#if EV_USE_INOTIFY
1406	void inline_size infy_fork (EV_P);	1701	inline_size void infy_fork (EV_P);
1407	#endif	1702	#endif
1408		1703
1409	void inline_size	1704	inline_size void
1410	loop_fork (EV_P)	1705	loop_fork (EV_P)
1411	{	1706	{
1412	#if EV_USE_PORT	1707	#if EV_USE_PORT
1413	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1708	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1414	#endif	1709	#endif
…		…
1420	#endif	1715	#endif
1421	#if EV_USE_INOTIFY	1716	#if EV_USE_INOTIFY
1422	infy_fork (EV_A);	1717	infy_fork (EV_A);
1423	#endif	1718	#endif
1424		1719
1425	if (ev_is_active (&pipeev))	1720	if (ev_is_active (&pipe_w))
1426	{	1721	{
1427	/* this "locks" the handlers against writing to the pipe */	1722	/* this "locks" the handlers against writing to the pipe */
1428	/* while we modify the fd vars */	1723	/* while we modify the fd vars */
1429	gotsig = 1;	1724	sig_pending = 1;
1430	#if EV_ASYNC_ENABLE	1725	#if EV_ASYNC_ENABLE
1431	gotasync = 1;	1726	async_pending = 1;
1432	#endif	1727	#endif
1433		1728
1434	ev_ref (EV_A);	1729	ev_ref (EV_A);
1435	ev_io_stop (EV_A_ &pipeev);	1730	ev_io_stop (EV_A_ &pipe_w);
1436		1731
1437	#if EV_USE_EVENTFD	1732	#if EV_USE_EVENTFD
1438	if (evfd >= 0)	1733	if (evfd >= 0)
1439	close (evfd);	1734	close (evfd);
1440	#endif	1735	#endif
1441		1736
1442	if (evpipe [0] >= 0)	1737	if (evpipe [0] >= 0)
1443	{	1738	{
1444	close (evpipe [0]);	1739	EV_WIN32_CLOSE_FD (evpipe [0]);
1445	close (evpipe [1]);	1740	EV_WIN32_CLOSE_FD (evpipe [1]);
1446	}	1741	}
1447		1742
1448	evpipe_init (EV_A);	1743	evpipe_init (EV_A);
1449	/* now iterate over everything, in case we missed something */	1744	/* now iterate over everything, in case we missed something */
1450	pipecb (EV_A_ &pipeev, EV_READ);	1745	pipecb (EV_A_ &pipe_w, EV_READ);
1451	}	1746	}
1452		1747
1453	postfork = 0;	1748	postfork = 0;
1454	}	1749	}
1455		1750
1456	#if EV_MULTIPLICITY	1751	#if EV_MULTIPLICITY
		1752
1457	struct ev_loop *	1753	struct ev_loop *
1458	ev_loop_new (unsigned int flags)	1754	ev_loop_new (unsigned int flags)
1459	{	1755	{
1460	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1756	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1461		1757
1462	memset (loop, 0, sizeof (struct ev_loop));	1758	memset (EV_A, 0, sizeof (struct ev_loop));
1463
1464	loop_init (EV_A_ flags);	1759	loop_init (EV_A_ flags);
1465		1760
1466	if (ev_backend (EV_A))	1761	if (ev_backend (EV_A))
1467	return loop;	1762	return EV_A;
1468		1763
1469	return 0;	1764	return 0;
1470	}	1765	}
1471		1766
1472	void	1767	void
…		…
1478		1773
1479	void	1774	void
1480	ev_loop_fork (EV_P)	1775	ev_loop_fork (EV_P)
1481	{	1776	{
1482	postfork = 1; /* must be in line with ev_default_fork */	1777	postfork = 1; /* must be in line with ev_default_fork */
		1778	}
		1779	#endif /* multiplicity */
		1780
		1781	#if EV_VERIFY
		1782	static void noinline
		1783	verify_watcher (EV_P_ W w)
		1784	{
		1785	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1786
		1787	if (w->pending)
		1788	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1789	}
		1790
		1791	static void noinline
		1792	verify_heap (EV_P_ ANHE *heap, int N)
		1793	{
		1794	int i;
		1795
		1796	for (i = HEAP0; i < N + HEAP0; ++i)
		1797	{
		1798	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1799	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1800	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1801
		1802	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1803	}
		1804	}
		1805
		1806	static void noinline
		1807	array_verify (EV_P_ W *ws, int cnt)
		1808	{
		1809	while (cnt--)
		1810	{
		1811	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1812	verify_watcher (EV_A_ ws [cnt]);
		1813	}
		1814	}
		1815	#endif
		1816
		1817	#if EV_MINIMAL < 2
		1818	void
		1819	ev_loop_verify (EV_P)
		1820	{
		1821	#if EV_VERIFY
		1822	int i;
		1823	WL w;
		1824
		1825	assert (activecnt >= -1);
		1826
		1827	assert (fdchangemax >= fdchangecnt);
		1828	for (i = 0; i < fdchangecnt; ++i)
		1829	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1830
		1831	assert (anfdmax >= 0);
		1832	for (i = 0; i < anfdmax; ++i)
		1833	for (w = anfds [i].head; w; w = w->next)
		1834	{
		1835	verify_watcher (EV_A_ (W)w);
		1836	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1837	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1838	}
		1839
		1840	assert (timermax >= timercnt);
		1841	verify_heap (EV_A_ timers, timercnt);
		1842
		1843	#if EV_PERIODIC_ENABLE
		1844	assert (periodicmax >= periodiccnt);
		1845	verify_heap (EV_A_ periodics, periodiccnt);
		1846	#endif
		1847
		1848	for (i = NUMPRI; i--; )
		1849	{
		1850	assert (pendingmax [i] >= pendingcnt [i]);
		1851	#if EV_IDLE_ENABLE
		1852	assert (idleall >= 0);
		1853	assert (idlemax [i] >= idlecnt [i]);
		1854	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1855	#endif
		1856	}
		1857
		1858	#if EV_FORK_ENABLE
		1859	assert (forkmax >= forkcnt);
		1860	array_verify (EV_A_ (W *)forks, forkcnt);
		1861	#endif
		1862
		1863	#if EV_ASYNC_ENABLE
		1864	assert (asyncmax >= asynccnt);
		1865	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1866	#endif
		1867
		1868	assert (preparemax >= preparecnt);
		1869	array_verify (EV_A_ (W *)prepares, preparecnt);
		1870
		1871	assert (checkmax >= checkcnt);
		1872	array_verify (EV_A_ (W *)checks, checkcnt);
		1873
		1874	# if 0
		1875	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1876	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		1877	# endif
		1878	#endif
1483	}	1879	}
1484	#endif	1880	#endif
1485		1881
1486	#if EV_MULTIPLICITY	1882	#if EV_MULTIPLICITY
1487	struct ev_loop *	1883	struct ev_loop *
…		…
1492	#endif	1888	#endif
1493	{	1889	{
1494	if (!ev_default_loop_ptr)	1890	if (!ev_default_loop_ptr)
1495	{	1891	{
1496	#if EV_MULTIPLICITY	1892	#if EV_MULTIPLICITY
1497	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1893	EV_P = ev_default_loop_ptr = &default_loop_struct;
1498	#else	1894	#else
1499	ev_default_loop_ptr = 1;	1895	ev_default_loop_ptr = 1;
1500	#endif	1896	#endif
1501		1897
1502	loop_init (EV_A_ flags);	1898	loop_init (EV_A_ flags);
…		…
1519		1915
1520	void	1916	void
1521	ev_default_destroy (void)	1917	ev_default_destroy (void)
1522	{	1918	{
1523	#if EV_MULTIPLICITY	1919	#if EV_MULTIPLICITY
1524	struct ev_loop *loop = ev_default_loop_ptr;	1920	EV_P = ev_default_loop_ptr;
1525	#endif	1921	#endif
		1922
		1923	ev_default_loop_ptr = 0;
1526		1924
1527	#ifndef _WIN32	1925	#ifndef _WIN32
1528	ev_ref (EV_A); /* child watcher */	1926	ev_ref (EV_A); /* child watcher */
1529	ev_signal_stop (EV_A_ &childev);	1927	ev_signal_stop (EV_A_ &childev);
1530	#endif	1928	#endif
…		…
1534		1932
1535	void	1933	void
1536	ev_default_fork (void)	1934	ev_default_fork (void)
1537	{	1935	{
1538	#if EV_MULTIPLICITY	1936	#if EV_MULTIPLICITY
1539	struct ev_loop *loop = ev_default_loop_ptr;	1937	EV_P = ev_default_loop_ptr;
1540	#endif	1938	#endif
1541		1939
1542	if (backend)
1543	postfork = 1; /* must be in line with ev_loop_fork */	1940	postfork = 1; /* must be in line with ev_loop_fork */
1544	}	1941	}
1545		1942
1546	/*****************************************************************************/	1943	/*****************************************************************************/
1547		1944
1548	void	1945	void
1549	ev_invoke (EV_P_ void *w, int revents)	1946	ev_invoke (EV_P_ void *w, int revents)
1550	{	1947	{
1551	EV_CB_INVOKE ((W)w, revents);	1948	EV_CB_INVOKE ((W)w, revents);
1552	}	1949	}
1553		1950
1554	void inline_speed	1951	unsigned int
1555	call_pending (EV_P)	1952	ev_pending_count (EV_P)
		1953	{
		1954	int pri;
		1955	unsigned int count = 0;
		1956
		1957	for (pri = NUMPRI; pri--; )
		1958	count += pendingcnt [pri];
		1959
		1960	return count;
		1961	}
		1962
		1963	void noinline
		1964	ev_invoke_pending (EV_P)
1556	{	1965	{
1557	int pri;	1966	int pri;
1558		1967
1559	for (pri = NUMPRI; pri--; )	1968	for (pri = NUMPRI; pri--; )
1560	while (pendingcnt [pri])	1969	while (pendingcnt [pri])
1561	{	1970	{
1562	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1971	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1563		1972
1564	if (expect_true (p->w))
1565	{
1566	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1973	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1974	/* ^ this is no longer true, as pending_w could be here */
1567		1975
1568	p->w->pending = 0;	1976	p->w->pending = 0;
1569	EV_CB_INVOKE (p->w, p->events);	1977	EV_CB_INVOKE (p->w, p->events);
1570	}	1978	EV_FREQUENT_CHECK;
1571	}	1979	}
1572	}	1980	}
1573		1981
1574	#if EV_IDLE_ENABLE	1982	#if EV_IDLE_ENABLE
1575	void inline_size	1983	/* make idle watchers pending. this handles the "call-idle */
		1984	/* only when higher priorities are idle" logic */
		1985	inline_size void
1576	idle_reify (EV_P)	1986	idle_reify (EV_P)
1577	{	1987	{
1578	if (expect_false (idleall))	1988	if (expect_false (idleall))
1579	{	1989	{
1580	int pri;	1990	int pri;
…		…
1592	}	2002	}
1593	}	2003	}
1594	}	2004	}
1595	#endif	2005	#endif
1596		2006
1597	void inline_size	2007	/* make timers pending */
		2008	inline_size void
1598	timers_reify (EV_P)	2009	timers_reify (EV_P)
1599	{	2010	{
		2011	EV_FREQUENT_CHECK;
		2012
1600	while (timercnt && ANHE_at (timers [HEAP0]) <= mn_now)	2013	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1601	{	2014	{
1602	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	2015	do
1603
1604	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1605
1606	/* first reschedule or stop timer */
1607	if (w->repeat)
1608	{	2016	{
		2017	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2018
		2019	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2020
		2021	/* first reschedule or stop timer */
		2022	if (w->repeat)
		2023	{
		2024	ev_at (w) += w->repeat;
		2025	if (ev_at (w) < mn_now)
		2026	ev_at (w) = mn_now;
		2027
1609	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	2028	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1610		2029
1611	ev_at (w) += w->repeat;
1612	if (ev_at (w) < mn_now)
1613	ev_at (w) = mn_now;
1614
1615	ANHE_at_set (timers [HEAP0]);	2030	ANHE_at_cache (timers [HEAP0]);
1616	downheap (timers, timercnt, HEAP0);	2031	downheap (timers, timercnt, HEAP0);
		2032	}
		2033	else
		2034	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2035
		2036	EV_FREQUENT_CHECK;
		2037	feed_reverse (EV_A_ (W)w);
1617	}	2038	}
1618	else	2039	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1619	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1620		2040
1621	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	2041	feed_reverse_done (EV_A_ EV_TIMEOUT);
1622	}	2042	}
1623	}	2043	}
1624		2044
1625	#if EV_PERIODIC_ENABLE	2045	#if EV_PERIODIC_ENABLE
1626	void inline_size	2046	/* make periodics pending */
		2047	inline_size void
1627	periodics_reify (EV_P)	2048	periodics_reify (EV_P)
1628	{	2049	{
		2050	EV_FREQUENT_CHECK;
		2051
1629	while (periodiccnt && ANHE_at (periodics [HEAP0]) <= ev_rt_now)	2052	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1630	{	2053	{
1631	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	2054	int feed_count = 0;
1632		2055
1633	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	2056	do
1634
1635	/* first reschedule or stop timer */
1636	if (w->reschedule_cb)
1637	{	2057	{
		2058	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2059
		2060	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2061
		2062	/* first reschedule or stop timer */
		2063	if (w->reschedule_cb)
		2064	{
1638	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);	2065	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2066
1639	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));	2067	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		2068
1640	ANHE_at_set (periodics [HEAP0]);	2069	ANHE_at_cache (periodics [HEAP0]);
1641	downheap (periodics, periodiccnt, HEAP0);	2070	downheap (periodics, periodiccnt, HEAP0);
		2071	}
		2072	else if (w->interval)
		2073	{
		2074	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2075	/* if next trigger time is not sufficiently in the future, put it there */
		2076	/* this might happen because of floating point inexactness */
		2077	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2078	{
		2079	ev_at (w) += w->interval;
		2080
		2081	/* if interval is unreasonably low we might still have a time in the past */
		2082	/* so correct this. this will make the periodic very inexact, but the user */
		2083	/* has effectively asked to get triggered more often than possible */
		2084	if (ev_at (w) < ev_rt_now)
		2085	ev_at (w) = ev_rt_now;
		2086	}
		2087
		2088	ANHE_at_cache (periodics [HEAP0]);
		2089	downheap (periodics, periodiccnt, HEAP0);
		2090	}
		2091	else
		2092	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2093
		2094	EV_FREQUENT_CHECK;
		2095	feed_reverse (EV_A_ (W)w);
1642	}	2096	}
1643	else if (w->interval)	2097	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1644	{
1645	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1646	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1647	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1648	ANHE_at_set (periodics [HEAP0]);
1649	downheap (periodics, periodiccnt, HEAP0);
1650	}
1651	else
1652	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1653		2098
1654	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	2099	feed_reverse_done (EV_A_ EV_PERIODIC);
1655	}	2100	}
1656	}	2101	}
1657		2102
		2103	/* simply recalculate all periodics */
		2104	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1658	static void noinline	2105	static void noinline
1659	periodics_reschedule (EV_P)	2106	periodics_reschedule (EV_P)
1660	{	2107	{
1661	int i;	2108	int i;
1662		2109
…		…
1668	if (w->reschedule_cb)	2115	if (w->reschedule_cb)
1669	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2116	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1670	else if (w->interval)	2117	else if (w->interval)
1671	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2118	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1672		2119
1673	ANHE_at_set (periodics [i]);	2120	ANHE_at_cache (periodics [i]);
		2121	}
		2122
		2123	reheap (periodics, periodiccnt);
		2124	}
		2125	#endif
		2126
		2127	/* adjust all timers by a given offset */
		2128	static void noinline
		2129	timers_reschedule (EV_P_ ev_tstamp adjust)
		2130	{
		2131	int i;
		2132
		2133	for (i = 0; i < timercnt; ++i)
1674	}	2134	{
1675		2135	ANHE *he = timers + i + HEAP0;
1676	/* now rebuild the heap, this for the 2-heap, inefficient for the 4-heap, but correct */	2136	ANHE_w (*he)->at += adjust;
1677	for (i = periodiccnt >> 1; --i; )	2137	ANHE_at_cache (*he);
1678	downheap (periodics, periodiccnt, i + HEAP0);	2138	}
1679	}	2139	}
1680	#endif
1681		2140
1682	void inline_speed	2141	/* fetch new monotonic and realtime times from the kernel */
		2142	/* also detetc if there was a timejump, and act accordingly */
		2143	inline_speed void
1683	time_update (EV_P_ ev_tstamp max_block)	2144	time_update (EV_P_ ev_tstamp max_block)
1684	{	2145	{
1685	int i;
1686
1687	#if EV_USE_MONOTONIC	2146	#if EV_USE_MONOTONIC
1688	if (expect_true (have_monotonic))	2147	if (expect_true (have_monotonic))
1689	{	2148	{
		2149	int i;
1690	ev_tstamp odiff = rtmn_diff;	2150	ev_tstamp odiff = rtmn_diff;
1691		2151
1692	mn_now = get_clock ();	2152	mn_now = get_clock ();
1693		2153
1694	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2154	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1720	ev_rt_now = ev_time ();	2180	ev_rt_now = ev_time ();
1721	mn_now = get_clock ();	2181	mn_now = get_clock ();
1722	now_floor = mn_now;	2182	now_floor = mn_now;
1723	}	2183	}
1724		2184
		2185	/* no timer adjustment, as the monotonic clock doesn't jump */
		2186	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1725	# if EV_PERIODIC_ENABLE	2187	# if EV_PERIODIC_ENABLE
1726	periodics_reschedule (EV_A);	2188	periodics_reschedule (EV_A);
1727	# endif	2189	# endif
1728	/* no timer adjustment, as the monotonic clock doesn't jump */
1729	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1730	}	2190	}
1731	else	2191	else
1732	#endif	2192	#endif
1733	{	2193	{
1734	ev_rt_now = ev_time ();	2194	ev_rt_now = ev_time ();
1735		2195
1736	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2196	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1737	{	2197	{
		2198	/* adjust timers. this is easy, as the offset is the same for all of them */
		2199	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1738	#if EV_PERIODIC_ENABLE	2200	#if EV_PERIODIC_ENABLE
1739	periodics_reschedule (EV_A);	2201	periodics_reschedule (EV_A);
1740	#endif	2202	#endif
1741	/* adjust timers. this is easy, as the offset is the same for all of them */
1742	for (i = 0; i < timercnt; ++i)
1743	{
1744	ANHE *he = timers + i + HEAP0;
1745	ANHE_w (*he)->at += ev_rt_now - mn_now;
1746	ANHE_at_set (*he);
1747	}
1748	}	2203	}
1749		2204
1750	mn_now = ev_rt_now;	2205	mn_now = ev_rt_now;
1751	}	2206	}
1752	}	2207	}
1753		2208
1754	void	2209	void
1755	ev_ref (EV_P)
1756	{
1757	++activecnt;
1758	}
1759
1760	void
1761	ev_unref (EV_P)
1762	{
1763	--activecnt;
1764	}
1765
1766	static int loop_done;
1767
1768	void
1769	ev_loop (EV_P_ int flags)	2210	ev_loop (EV_P_ int flags)
1770	{	2211	{
		2212	#if EV_MINIMAL < 2
		2213	++loop_depth;
		2214	#endif
		2215
		2216	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2217
1771	loop_done = EVUNLOOP_CANCEL;	2218	loop_done = EVUNLOOP_CANCEL;
1772		2219
1773	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2220	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1774		2221
1775	do	2222	do
1776	{	2223	{
		2224	#if EV_VERIFY >= 2
		2225	ev_loop_verify (EV_A);
		2226	#endif
		2227
1777	#ifndef _WIN32	2228	#ifndef _WIN32
1778	if (expect_false (curpid)) /* penalise the forking check even more */	2229	if (expect_false (curpid)) /* penalise the forking check even more */
1779	if (expect_false (getpid () != curpid))	2230	if (expect_false (getpid () != curpid))
1780	{	2231	{
1781	curpid = getpid ();	2232	curpid = getpid ();
…		…
1787	/* we might have forked, so queue fork handlers */	2238	/* we might have forked, so queue fork handlers */
1788	if (expect_false (postfork))	2239	if (expect_false (postfork))
1789	if (forkcnt)	2240	if (forkcnt)
1790	{	2241	{
1791	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2242	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1792	call_pending (EV_A);	2243	EV_INVOKE_PENDING;
1793	}	2244	}
1794	#endif	2245	#endif
1795		2246
1796	/* queue prepare watchers (and execute them) */	2247	/* queue prepare watchers (and execute them) */
1797	if (expect_false (preparecnt))	2248	if (expect_false (preparecnt))
1798	{	2249	{
1799	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2250	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1800	call_pending (EV_A);	2251	EV_INVOKE_PENDING;
1801	}	2252	}
1802		2253
1803	if (expect_false (!activecnt))	2254	if (expect_false (loop_done))
1804	break;	2255	break;
1805		2256
1806	/* we might have forked, so reify kernel state if necessary */	2257	/* we might have forked, so reify kernel state if necessary */
1807	if (expect_false (postfork))	2258	if (expect_false (postfork))
1808	loop_fork (EV_A);	2259	loop_fork (EV_A);
…		…
1815	ev_tstamp waittime = 0.;	2266	ev_tstamp waittime = 0.;
1816	ev_tstamp sleeptime = 0.;	2267	ev_tstamp sleeptime = 0.;
1817		2268
1818	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2269	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1819	{	2270	{
		2271	/* remember old timestamp for io_blocktime calculation */
		2272	ev_tstamp prev_mn_now = mn_now;
		2273
1820	/* update time to cancel out callback processing overhead */	2274	/* update time to cancel out callback processing overhead */
1821	time_update (EV_A_ 1e100);	2275	time_update (EV_A_ 1e100);
1822		2276
1823	waittime = MAX_BLOCKTIME;	2277	waittime = MAX_BLOCKTIME;
1824		2278
…		…
1834	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2288	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1835	if (waittime > to) waittime = to;	2289	if (waittime > to) waittime = to;
1836	}	2290	}
1837	#endif	2291	#endif
1838		2292
		2293	/* don't let timeouts decrease the waittime below timeout_blocktime */
1839	if (expect_false (waittime < timeout_blocktime))	2294	if (expect_false (waittime < timeout_blocktime))
1840	waittime = timeout_blocktime;	2295	waittime = timeout_blocktime;
1841		2296
1842	sleeptime = waittime - backend_fudge;	2297	/* extra check because io_blocktime is commonly 0 */
1843
1844	if (expect_true (sleeptime > io_blocktime))	2298	if (expect_false (io_blocktime))
1845	sleeptime = io_blocktime;
1846
1847	if (sleeptime)
1848	{	2299	{
		2300	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2301
		2302	if (sleeptime > waittime - backend_fudge)
		2303	sleeptime = waittime - backend_fudge;
		2304
		2305	if (expect_true (sleeptime > 0.))
		2306	{
1849	ev_sleep (sleeptime);	2307	ev_sleep (sleeptime);
1850	waittime -= sleeptime;	2308	waittime -= sleeptime;
		2309	}
1851	}	2310	}
1852	}	2311	}
1853		2312
		2313	#if EV_MINIMAL < 2
1854	++loop_count;	2314	++loop_count;
		2315	#endif
		2316	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1855	backend_poll (EV_A_ waittime);	2317	backend_poll (EV_A_ waittime);
		2318	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1856		2319
1857	/* update ev_rt_now, do magic */	2320	/* update ev_rt_now, do magic */
1858	time_update (EV_A_ waittime + sleeptime);	2321	time_update (EV_A_ waittime + sleeptime);
1859	}	2322	}
1860		2323
…		…
1871		2334
1872	/* queue check watchers, to be executed first */	2335	/* queue check watchers, to be executed first */
1873	if (expect_false (checkcnt))	2336	if (expect_false (checkcnt))
1874	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2337	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1875		2338
1876	call_pending (EV_A);	2339	EV_INVOKE_PENDING;
1877	}	2340	}
1878	while (expect_true (	2341	while (expect_true (
1879	activecnt	2342	activecnt
1880	&& !loop_done	2343	&& !loop_done
1881	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2344	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1882	));	2345	));
1883		2346
1884	if (loop_done == EVUNLOOP_ONE)	2347	if (loop_done == EVUNLOOP_ONE)
1885	loop_done = EVUNLOOP_CANCEL;	2348	loop_done = EVUNLOOP_CANCEL;
		2349
		2350	#if EV_MINIMAL < 2
		2351	--loop_depth;
		2352	#endif
1886	}	2353	}
1887		2354
1888	void	2355	void
1889	ev_unloop (EV_P_ int how)	2356	ev_unloop (EV_P_ int how)
1890	{	2357	{
1891	loop_done = how;	2358	loop_done = how;
1892	}	2359	}
1893		2360
		2361	void
		2362	ev_ref (EV_P)
		2363	{
		2364	++activecnt;
		2365	}
		2366
		2367	void
		2368	ev_unref (EV_P)
		2369	{
		2370	--activecnt;
		2371	}
		2372
		2373	void
		2374	ev_now_update (EV_P)
		2375	{
		2376	time_update (EV_A_ 1e100);
		2377	}
		2378
		2379	void
		2380	ev_suspend (EV_P)
		2381	{
		2382	ev_now_update (EV_A);
		2383	}
		2384
		2385	void
		2386	ev_resume (EV_P)
		2387	{
		2388	ev_tstamp mn_prev = mn_now;
		2389
		2390	ev_now_update (EV_A);
		2391	timers_reschedule (EV_A_ mn_now - mn_prev);
		2392	#if EV_PERIODIC_ENABLE
		2393	/* TODO: really do this? */
		2394	periodics_reschedule (EV_A);
		2395	#endif
		2396	}
		2397
1894	/*****************************************************************************/	2398	/*****************************************************************************/
		2399	/* singly-linked list management, used when the expected list length is short */
1895		2400
1896	void inline_size	2401	inline_size void
1897	wlist_add (WL *head, WL elem)	2402	wlist_add (WL *head, WL elem)
1898	{	2403	{
1899	elem->next = *head;	2404	elem->next = *head;
1900	*head = elem;	2405	*head = elem;
1901	}	2406	}
1902		2407
1903	void inline_size	2408	inline_size void
1904	wlist_del (WL *head, WL elem)	2409	wlist_del (WL *head, WL elem)
1905	{	2410	{
1906	while (*head)	2411	while (*head)
1907	{	2412	{
1908	if (*head == elem)	2413	if (expect_true (*head == elem))
1909	{	2414	{
1910	*head = elem->next;	2415	*head = elem->next;
1911	return;	2416	break;
1912	}	2417	}
1913		2418
1914	head = &(*head)->next;	2419	head = &(*head)->next;
1915	}	2420	}
1916	}	2421	}
1917		2422
1918	void inline_speed	2423	/* internal, faster, version of ev_clear_pending */
		2424	inline_speed void
1919	clear_pending (EV_P_ W w)	2425	clear_pending (EV_P_ W w)
1920	{	2426	{
1921	if (w->pending)	2427	if (w->pending)
1922	{	2428	{
1923	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2429	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1924	w->pending = 0;	2430	w->pending = 0;
1925	}	2431	}
1926	}	2432	}
1927		2433
1928	int	2434	int
…		…
1932	int pending = w_->pending;	2438	int pending = w_->pending;
1933		2439
1934	if (expect_true (pending))	2440	if (expect_true (pending))
1935	{	2441	{
1936	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2442	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2443	p->w = (W)&pending_w;
1937	w_->pending = 0;	2444	w_->pending = 0;
1938	p->w = 0;
1939	return p->events;	2445	return p->events;
1940	}	2446	}
1941	else	2447	else
1942	return 0;	2448	return 0;
1943	}	2449	}
1944		2450
1945	void inline_size	2451	inline_size void
1946	pri_adjust (EV_P_ W w)	2452	pri_adjust (EV_P_ W w)
1947	{	2453	{
1948	int pri = w->priority;	2454	int pri = ev_priority (w);
1949	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2455	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1950	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2456	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1951	w->priority = pri;	2457	ev_set_priority (w, pri);
1952	}	2458	}
1953		2459
1954	void inline_speed	2460	inline_speed void
1955	ev_start (EV_P_ W w, int active)	2461	ev_start (EV_P_ W w, int active)
1956	{	2462	{
1957	pri_adjust (EV_A_ w);	2463	pri_adjust (EV_A_ w);
1958	w->active = active;	2464	w->active = active;
1959	ev_ref (EV_A);	2465	ev_ref (EV_A);
1960	}	2466	}
1961		2467
1962	void inline_size	2468	inline_size void
1963	ev_stop (EV_P_ W w)	2469	ev_stop (EV_P_ W w)
1964	{	2470	{
1965	ev_unref (EV_A);	2471	ev_unref (EV_A);
1966	w->active = 0;	2472	w->active = 0;
1967	}	2473	}
…		…
1974	int fd = w->fd;	2480	int fd = w->fd;
1975		2481
1976	if (expect_false (ev_is_active (w)))	2482	if (expect_false (ev_is_active (w)))
1977	return;	2483	return;
1978		2484
1979	assert (("ev_io_start called with negative fd", fd >= 0));	2485	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2486	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2487
		2488	EV_FREQUENT_CHECK;
1980		2489
1981	ev_start (EV_A_ (W)w, 1);	2490	ev_start (EV_A_ (W)w, 1);
1982	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2491	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1983	wlist_add (&anfds[fd].head, (WL)w);	2492	wlist_add (&anfds[fd].head, (WL)w);
1984		2493
1985	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2494	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1986	w->events &= ~EV_IOFDSET;	2495	w->events &= ~EV__IOFDSET;
		2496
		2497	EV_FREQUENT_CHECK;
1987	}	2498	}
1988		2499
1989	void noinline	2500	void noinline
1990	ev_io_stop (EV_P_ ev_io *w)	2501	ev_io_stop (EV_P_ ev_io *w)
1991	{	2502	{
1992	clear_pending (EV_A_ (W)w);	2503	clear_pending (EV_A_ (W)w);
1993	if (expect_false (!ev_is_active (w)))	2504	if (expect_false (!ev_is_active (w)))
1994	return;	2505	return;
1995		2506
1996	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2507	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2508
		2509	EV_FREQUENT_CHECK;
1997		2510
1998	wlist_del (&anfds[w->fd].head, (WL)w);	2511	wlist_del (&anfds[w->fd].head, (WL)w);
1999	ev_stop (EV_A_ (W)w);	2512	ev_stop (EV_A_ (W)w);
2000		2513
2001	fd_change (EV_A_ w->fd, 1);	2514	fd_change (EV_A_ w->fd, 1);
		2515
		2516	EV_FREQUENT_CHECK;
2002	}	2517	}
2003		2518
2004	void noinline	2519	void noinline
2005	ev_timer_start (EV_P_ ev_timer *w)	2520	ev_timer_start (EV_P_ ev_timer *w)
2006	{	2521	{
2007	if (expect_false (ev_is_active (w)))	2522	if (expect_false (ev_is_active (w)))
2008	return;	2523	return;
2009		2524
2010	ev_at (w) += mn_now;	2525	ev_at (w) += mn_now;
2011		2526
2012	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2527	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2013		2528
		2529	EV_FREQUENT_CHECK;
		2530
		2531	++timercnt;
2014	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);	2532	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2015	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);	2533	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2016	ANHE_w (timers [ev_active (w)]) = (WT)w;	2534	ANHE_w (timers [ev_active (w)]) = (WT)w;
2017	ANHE_at_set (timers [ev_active (w)]);	2535	ANHE_at_cache (timers [ev_active (w)]);
2018	upheap (timers, ev_active (w));	2536	upheap (timers, ev_active (w));
2019		2537
		2538	EV_FREQUENT_CHECK;
		2539
2020	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2540	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2021	}	2541	}
2022		2542
2023	void noinline	2543	void noinline
2024	ev_timer_stop (EV_P_ ev_timer *w)	2544	ev_timer_stop (EV_P_ ev_timer *w)
2025	{	2545	{
2026	clear_pending (EV_A_ (W)w);	2546	clear_pending (EV_A_ (W)w);
2027	if (expect_false (!ev_is_active (w)))	2547	if (expect_false (!ev_is_active (w)))
2028	return;	2548	return;
2029		2549
		2550	EV_FREQUENT_CHECK;
		2551
2030	{	2552	{
2031	int active = ev_active (w);	2553	int active = ev_active (w);
2032		2554
2033	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2555	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2034		2556
		2557	--timercnt;
		2558
2035	if (expect_true (active < timercnt + HEAP0 - 1))	2559	if (expect_true (active < timercnt + HEAP0))
2036	{	2560	{
2037	timers [active] = timers [timercnt + HEAP0 - 1];	2561	timers [active] = timers [timercnt + HEAP0];
2038	adjustheap (timers, timercnt, active);	2562	adjustheap (timers, timercnt, active);
2039	}	2563	}
2040
2041	--timercnt;
2042	}	2564	}
		2565
		2566	EV_FREQUENT_CHECK;
2043		2567
2044	ev_at (w) -= mn_now;	2568	ev_at (w) -= mn_now;
2045		2569
2046	ev_stop (EV_A_ (W)w);	2570	ev_stop (EV_A_ (W)w);
2047	}	2571	}
2048		2572
2049	void noinline	2573	void noinline
2050	ev_timer_again (EV_P_ ev_timer *w)	2574	ev_timer_again (EV_P_ ev_timer *w)
2051	{	2575	{
		2576	EV_FREQUENT_CHECK;
		2577
2052	if (ev_is_active (w))	2578	if (ev_is_active (w))
2053	{	2579	{
2054	if (w->repeat)	2580	if (w->repeat)
2055	{	2581	{
2056	ev_at (w) = mn_now + w->repeat;	2582	ev_at (w) = mn_now + w->repeat;
2057	ANHE_at_set (timers [ev_active (w)]);	2583	ANHE_at_cache (timers [ev_active (w)]);
2058	adjustheap (timers, timercnt, ev_active (w));	2584	adjustheap (timers, timercnt, ev_active (w));
2059	}	2585	}
2060	else	2586	else
2061	ev_timer_stop (EV_A_ w);	2587	ev_timer_stop (EV_A_ w);
2062	}	2588	}
2063	else if (w->repeat)	2589	else if (w->repeat)
2064	{	2590	{
2065	ev_at (w) = w->repeat;	2591	ev_at (w) = w->repeat;
2066	ev_timer_start (EV_A_ w);	2592	ev_timer_start (EV_A_ w);
2067	}	2593	}
		2594
		2595	EV_FREQUENT_CHECK;
		2596	}
		2597
		2598	ev_tstamp
		2599	ev_timer_remaining (EV_P_ ev_timer *w)
		2600	{
		2601	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2068	}	2602	}
2069		2603
2070	#if EV_PERIODIC_ENABLE	2604	#if EV_PERIODIC_ENABLE
2071	void noinline	2605	void noinline
2072	ev_periodic_start (EV_P_ ev_periodic *w)	2606	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
2076		2610
2077	if (w->reschedule_cb)	2611	if (w->reschedule_cb)
2078	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2612	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2079	else if (w->interval)	2613	else if (w->interval)
2080	{	2614	{
2081	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2615	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2082	/* this formula differs from the one in periodic_reify because we do not always round up */	2616	/* this formula differs from the one in periodic_reify because we do not always round up */
2083	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2617	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2084	}	2618	}
2085	else	2619	else
2086	ev_at (w) = w->offset;	2620	ev_at (w) = w->offset;
2087		2621
		2622	EV_FREQUENT_CHECK;
		2623
		2624	++periodiccnt;
2088	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);	2625	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2089	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);	2626	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2090	ANHE_w (periodics [ev_active (w)]) = (WT)w;	2627	ANHE_w (periodics [ev_active (w)]) = (WT)w;
		2628	ANHE_at_cache (periodics [ev_active (w)]);
2091	upheap (periodics, ev_active (w));	2629	upheap (periodics, ev_active (w));
2092		2630
		2631	EV_FREQUENT_CHECK;
		2632
2093	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2633	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2094	}	2634	}
2095		2635
2096	void noinline	2636	void noinline
2097	ev_periodic_stop (EV_P_ ev_periodic *w)	2637	ev_periodic_stop (EV_P_ ev_periodic *w)
2098	{	2638	{
2099	clear_pending (EV_A_ (W)w);	2639	clear_pending (EV_A_ (W)w);
2100	if (expect_false (!ev_is_active (w)))	2640	if (expect_false (!ev_is_active (w)))
2101	return;	2641	return;
2102		2642
		2643	EV_FREQUENT_CHECK;
		2644
2103	{	2645	{
2104	int active = ev_active (w);	2646	int active = ev_active (w);
2105		2647
2106	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2648	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2107		2649
		2650	--periodiccnt;
		2651
2108	if (expect_true (active < periodiccnt + HEAP0 - 1))	2652	if (expect_true (active < periodiccnt + HEAP0))
2109	{	2653	{
2110	periodics [active] = periodics [periodiccnt + HEAP0 - 1];	2654	periodics [active] = periodics [periodiccnt + HEAP0];
2111	adjustheap (periodics, periodiccnt, active);	2655	adjustheap (periodics, periodiccnt, active);
2112	}	2656	}
2113
2114	--periodiccnt;
2115	}	2657	}
		2658
		2659	EV_FREQUENT_CHECK;
2116		2660
2117	ev_stop (EV_A_ (W)w);	2661	ev_stop (EV_A_ (W)w);
2118	}	2662	}
2119		2663
2120	void noinline	2664	void noinline
…		…
2131	#endif	2675	#endif
2132		2676
2133	void noinline	2677	void noinline
2134	ev_signal_start (EV_P_ ev_signal *w)	2678	ev_signal_start (EV_P_ ev_signal *w)
2135	{	2679	{
2136	#if EV_MULTIPLICITY
2137	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2138	#endif
2139	if (expect_false (ev_is_active (w)))	2680	if (expect_false (ev_is_active (w)))
2140	return;	2681	return;
2141		2682
2142	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2683	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2143		2684
2144	evpipe_init (EV_A);	2685	#if EV_MULTIPLICITY
		2686	assert (("libev: a signal must not be attached to two different loops",
		2687	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2145		2688
		2689	signals [w->signum - 1].loop = EV_A;
		2690	#endif
		2691
		2692	EV_FREQUENT_CHECK;
		2693
		2694	#if EV_USE_SIGNALFD
		2695	if (sigfd == -2)
2146	{	2696	{
2147	#ifndef _WIN32	2697	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2148	sigset_t full, prev;	2698	if (sigfd < 0 && errno == EINVAL)
2149	sigfillset (&full);	2699	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2150	sigprocmask (SIG_SETMASK, &full, &prev);
2151	#endif
2152		2700
2153	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2701	if (sigfd >= 0)
		2702	{
		2703	fd_intern (sigfd); /* doing it twice will not hurt */
2154		2704
2155	#ifndef _WIN32	2705	sigemptyset (&sigfd_set);
2156	sigprocmask (SIG_SETMASK, &prev, 0);	2706
2157	#endif	2707	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2708	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2709	ev_io_start (EV_A_ &sigfd_w);
		2710	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2711	}
2158	}	2712	}
		2713
		2714	if (sigfd >= 0)
		2715	{
		2716	/* TODO: check .head */
		2717	sigaddset (&sigfd_set, w->signum);
		2718	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2719
		2720	signalfd (sigfd, &sigfd_set, 0);
		2721	}
		2722	#endif
2159		2723
2160	ev_start (EV_A_ (W)w, 1);	2724	ev_start (EV_A_ (W)w, 1);
2161	wlist_add (&signals [w->signum - 1].head, (WL)w);	2725	wlist_add (&signals [w->signum - 1].head, (WL)w);
2162		2726
2163	if (!((WL)w)->next)	2727	if (!((WL)w)->next)
		2728	# if EV_USE_SIGNALFD
		2729	if (sigfd < 0) /*TODO*/
		2730	# endif
2164	{	2731	{
2165	#if _WIN32	2732	# if _WIN32
2166	signal (w->signum, ev_sighandler);	2733	signal (w->signum, ev_sighandler);
2167	#else	2734	# else
2168	struct sigaction sa;	2735	struct sigaction sa;
		2736
		2737	evpipe_init (EV_A);
		2738
2169	sa.sa_handler = ev_sighandler;	2739	sa.sa_handler = ev_sighandler;
2170	sigfillset (&sa.sa_mask);	2740	sigfillset (&sa.sa_mask);
2171	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2741	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2172	sigaction (w->signum, &sa, 0);	2742	sigaction (w->signum, &sa, 0);
		2743
		2744	sigemptyset (&sa.sa_mask);
		2745	sigaddset (&sa.sa_mask, w->signum);
		2746	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2173	#endif	2747	#endif
2174	}	2748	}
		2749
		2750	EV_FREQUENT_CHECK;
2175	}	2751	}
2176		2752
2177	void noinline	2753	void noinline
2178	ev_signal_stop (EV_P_ ev_signal *w)	2754	ev_signal_stop (EV_P_ ev_signal *w)
2179	{	2755	{
2180	clear_pending (EV_A_ (W)w);	2756	clear_pending (EV_A_ (W)w);
2181	if (expect_false (!ev_is_active (w)))	2757	if (expect_false (!ev_is_active (w)))
2182	return;	2758	return;
2183		2759
		2760	EV_FREQUENT_CHECK;
		2761
2184	wlist_del (&signals [w->signum - 1].head, (WL)w);	2762	wlist_del (&signals [w->signum - 1].head, (WL)w);
2185	ev_stop (EV_A_ (W)w);	2763	ev_stop (EV_A_ (W)w);
2186		2764
2187	if (!signals [w->signum - 1].head)	2765	if (!signals [w->signum - 1].head)
		2766	{
		2767	#if EV_MULTIPLICITY
		2768	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2769	#endif
		2770	#if EV_USE_SIGNALFD
		2771	if (sigfd >= 0)
		2772	{
		2773	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2774	sigdelset (&sigfd_set, w->signum);
		2775	signalfd (sigfd, &sigfd_set, 0);
		2776	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2777	/*TODO: maybe unblock signal? */
		2778	}
		2779	else
		2780	#endif
2188	signal (w->signum, SIG_DFL);	2781	signal (w->signum, SIG_DFL);
		2782	}
		2783
		2784	EV_FREQUENT_CHECK;
2189	}	2785	}
2190		2786
2191	void	2787	void
2192	ev_child_start (EV_P_ ev_child *w)	2788	ev_child_start (EV_P_ ev_child *w)
2193	{	2789	{
2194	#if EV_MULTIPLICITY	2790	#if EV_MULTIPLICITY
2195	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2791	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2196	#endif	2792	#endif
2197	if (expect_false (ev_is_active (w)))	2793	if (expect_false (ev_is_active (w)))
2198	return;	2794	return;
2199		2795
		2796	EV_FREQUENT_CHECK;
		2797
2200	ev_start (EV_A_ (W)w, 1);	2798	ev_start (EV_A_ (W)w, 1);
2201	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2799	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2800
		2801	EV_FREQUENT_CHECK;
2202	}	2802	}
2203		2803
2204	void	2804	void
2205	ev_child_stop (EV_P_ ev_child *w)	2805	ev_child_stop (EV_P_ ev_child *w)
2206	{	2806	{
2207	clear_pending (EV_A_ (W)w);	2807	clear_pending (EV_A_ (W)w);
2208	if (expect_false (!ev_is_active (w)))	2808	if (expect_false (!ev_is_active (w)))
2209	return;	2809	return;
2210		2810
		2811	EV_FREQUENT_CHECK;
		2812
2211	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2813	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2212	ev_stop (EV_A_ (W)w);	2814	ev_stop (EV_A_ (W)w);
		2815
		2816	EV_FREQUENT_CHECK;
2213	}	2817	}
2214		2818
2215	#if EV_STAT_ENABLE	2819	#if EV_STAT_ENABLE
2216		2820
2217	# ifdef _WIN32	2821	# ifdef _WIN32
2218	# undef lstat	2822	# undef lstat
2219	# define lstat(a,b) _stati64 (a,b)	2823	# define lstat(a,b) _stati64 (a,b)
2220	# endif	2824	# endif
2221		2825
2222	#define DEF_STAT_INTERVAL 5.0074891	2826	#define DEF_STAT_INTERVAL 5.0074891
		2827	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2223	#define MIN_STAT_INTERVAL 0.1074891	2828	#define MIN_STAT_INTERVAL 0.1074891
2224		2829
2225	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2830	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2226		2831
2227	#if EV_USE_INOTIFY	2832	#if EV_USE_INOTIFY
2228	# define EV_INOTIFY_BUFSIZE 8192	2833	# define EV_INOTIFY_BUFSIZE 8192
…		…
2232	{	2837	{
2233	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);	2838	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);
2234		2839
2235	if (w->wd < 0)	2840	if (w->wd < 0)
2236	{	2841	{
		2842	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2237	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2843	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2238		2844
2239	/* monitor some parent directory for speedup hints */	2845	/* monitor some parent directory for speedup hints */
2240	/* note that exceeding the hardcoded limit is not a correctness issue, */	2846	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2241	/* but an efficiency issue only */	2847	/* but an efficiency issue only */
2242	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2848	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2243	{	2849	{
2244	char path [4096];	2850	char path [4096];
2245	strcpy (path, w->path);	2851	strcpy (path, w->path);
…		…
2249	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2855	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2250	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2856	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2251		2857
2252	char *pend = strrchr (path, '/');	2858	char *pend = strrchr (path, '/');
2253		2859
2254	if (!pend)	2860	if (!pend || pend == path)
2255	break; /* whoops, no '/', complain to your admin */	2861	break;
2256		2862
2257	*pend = 0;	2863	*pend = 0;
2258	w->wd = inotify_add_watch (fs_fd, path, mask);	2864	w->wd = inotify_add_watch (fs_fd, path, mask);
2259	}	2865	}
2260	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2866	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2261	}	2867	}
2262	}	2868	}
2263	else
2264	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2265		2869
2266	if (w->wd >= 0)	2870	if (w->wd >= 0)
		2871	{
		2872	struct statfs sfs;
		2873
2267	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2874	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2875
		2876	/* now local changes will be tracked by inotify, but remote changes won't */
		2877	/* unless the filesystem it known to be local, we therefore still poll */
		2878	/* also do poll on <2.6.25, but with normal frequency */
		2879
		2880	if (fs_2625 && !statfs (w->path, &sfs))
		2881	if (sfs.f_type == 0x1373 /* devfs */
		2882	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2883	|| sfs.f_type == 0x3153464a /* jfs */
		2884	|| sfs.f_type == 0x52654973 /* reiser3 */
		2885	|| sfs.f_type == 0x01021994 /* tempfs */
		2886	|| sfs.f_type == 0x58465342 /* xfs */)
		2887	return;
		2888
		2889	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2890	ev_timer_again (EV_A_ &w->timer);
		2891	}
2268	}	2892	}
2269		2893
2270	static void noinline	2894	static void noinline
2271	infy_del (EV_P_ ev_stat *w)	2895	infy_del (EV_P_ ev_stat *w)
2272	{	2896	{
…		…
2286		2910
2287	static void noinline	2911	static void noinline
2288	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2912	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2289	{	2913	{
2290	if (slot < 0)	2914	if (slot < 0)
2291	/* overflow, need to check for all hahs slots */	2915	/* overflow, need to check for all hash slots */
2292	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2916	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2293	infy_wd (EV_A_ slot, wd, ev);	2917	infy_wd (EV_A_ slot, wd, ev);
2294	else	2918	else
2295	{	2919	{
2296	WL w_;	2920	WL w_;
…		…
2302		2926
2303	if (w->wd == wd || wd == -1)	2927	if (w->wd == wd || wd == -1)
2304	{	2928	{
2305	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2929	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2306	{	2930	{
		2931	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2307	w->wd = -1;	2932	w->wd = -1;
2308	infy_add (EV_A_ w); /* re-add, no matter what */	2933	infy_add (EV_A_ w); /* re-add, no matter what */
2309	}	2934	}
2310		2935
2311	stat_timer_cb (EV_A_ &w->timer, 0);	2936	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2324		2949
2325	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2950	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2326	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2951	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2327	}	2952	}
2328		2953
2329	void inline_size	2954	inline_size void
		2955	check_2625 (EV_P)
		2956	{
		2957	/* kernels < 2.6.25 are borked
		2958	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2959	*/
		2960	struct utsname buf;
		2961	int major, minor, micro;
		2962
		2963	if (uname (&buf))
		2964	return;
		2965
		2966	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2967	return;
		2968
		2969	if (major < 2
		2970	|| (major == 2 && minor < 6)
		2971	|| (major == 2 && minor == 6 && micro < 25))
		2972	return;
		2973
		2974	fs_2625 = 1;
		2975	}
		2976
		2977	inline_size void
2330	infy_init (EV_P)	2978	infy_init (EV_P)
2331	{	2979	{
2332	if (fs_fd != -2)	2980	if (fs_fd != -2)
2333	return;	2981	return;
		2982
		2983	fs_fd = -1;
		2984
		2985	check_2625 (EV_A);
2334		2986
2335	fs_fd = inotify_init ();	2987	fs_fd = inotify_init ();
2336		2988
2337	if (fs_fd >= 0)	2989	if (fs_fd >= 0)
2338	{	2990	{
…		…
2340	ev_set_priority (&fs_w, EV_MAXPRI);	2992	ev_set_priority (&fs_w, EV_MAXPRI);
2341	ev_io_start (EV_A_ &fs_w);	2993	ev_io_start (EV_A_ &fs_w);
2342	}	2994	}
2343	}	2995	}
2344		2996
2345	void inline_size	2997	inline_size void
2346	infy_fork (EV_P)	2998	infy_fork (EV_P)
2347	{	2999	{
2348	int slot;	3000	int slot;
2349		3001
2350	if (fs_fd < 0)	3002	if (fs_fd < 0)
…		…
2366	w->wd = -1;	3018	w->wd = -1;
2367		3019
2368	if (fs_fd >= 0)	3020	if (fs_fd >= 0)
2369	infy_add (EV_A_ w); /* re-add, no matter what */	3021	infy_add (EV_A_ w); /* re-add, no matter what */
2370	else	3022	else
2371	ev_timer_start (EV_A_ &w->timer);	3023	ev_timer_again (EV_A_ &w->timer);
2372	}	3024	}
2373
2374	}	3025	}
2375	}	3026	}
2376		3027
		3028	#endif
		3029
		3030	#ifdef _WIN32
		3031	# define EV_LSTAT(p,b) _stati64 (p, b)
		3032	#else
		3033	# define EV_LSTAT(p,b) lstat (p, b)
2377	#endif	3034	#endif
2378		3035
2379	void	3036	void
2380	ev_stat_stat (EV_P_ ev_stat *w)	3037	ev_stat_stat (EV_P_ ev_stat *w)
2381	{	3038	{
…		…
2408	|| w->prev.st_atime != w->attr.st_atime	3065	|| w->prev.st_atime != w->attr.st_atime
2409	|| w->prev.st_mtime != w->attr.st_mtime	3066	|| w->prev.st_mtime != w->attr.st_mtime
2410	|| w->prev.st_ctime != w->attr.st_ctime	3067	|| w->prev.st_ctime != w->attr.st_ctime
2411	) {	3068	) {
2412	#if EV_USE_INOTIFY	3069	#if EV_USE_INOTIFY
		3070	if (fs_fd >= 0)
		3071	{
2413	infy_del (EV_A_ w);	3072	infy_del (EV_A_ w);
2414	infy_add (EV_A_ w);	3073	infy_add (EV_A_ w);
2415	ev_stat_stat (EV_A_ w); /* avoid race... */	3074	ev_stat_stat (EV_A_ w); /* avoid race... */
		3075	}
2416	#endif	3076	#endif
2417		3077
2418	ev_feed_event (EV_A_ w, EV_STAT);	3078	ev_feed_event (EV_A_ w, EV_STAT);
2419	}	3079	}
2420	}	3080	}
…		…
2423	ev_stat_start (EV_P_ ev_stat *w)	3083	ev_stat_start (EV_P_ ev_stat *w)
2424	{	3084	{
2425	if (expect_false (ev_is_active (w)))	3085	if (expect_false (ev_is_active (w)))
2426	return;	3086	return;
2427		3087
2428	/* since we use memcmp, we need to clear any padding data etc. */
2429	memset (&w->prev, 0, sizeof (ev_statdata));
2430	memset (&w->attr, 0, sizeof (ev_statdata));
2431
2432	ev_stat_stat (EV_A_ w);	3088	ev_stat_stat (EV_A_ w);
2433		3089
		3090	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2434	if (w->interval < MIN_STAT_INTERVAL)	3091	w->interval = MIN_STAT_INTERVAL;
2435	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2436		3092
2437	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3093	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2438	ev_set_priority (&w->timer, ev_priority (w));	3094	ev_set_priority (&w->timer, ev_priority (w));
2439		3095
2440	#if EV_USE_INOTIFY	3096	#if EV_USE_INOTIFY
2441	infy_init (EV_A);	3097	infy_init (EV_A);
2442		3098
2443	if (fs_fd >= 0)	3099	if (fs_fd >= 0)
2444	infy_add (EV_A_ w);	3100	infy_add (EV_A_ w);
2445	else	3101	else
2446	#endif	3102	#endif
2447	ev_timer_start (EV_A_ &w->timer);	3103	ev_timer_again (EV_A_ &w->timer);
2448		3104
2449	ev_start (EV_A_ (W)w, 1);	3105	ev_start (EV_A_ (W)w, 1);
		3106
		3107	EV_FREQUENT_CHECK;
2450	}	3108	}
2451		3109
2452	void	3110	void
2453	ev_stat_stop (EV_P_ ev_stat *w)	3111	ev_stat_stop (EV_P_ ev_stat *w)
2454	{	3112	{
2455	clear_pending (EV_A_ (W)w);	3113	clear_pending (EV_A_ (W)w);
2456	if (expect_false (!ev_is_active (w)))	3114	if (expect_false (!ev_is_active (w)))
2457	return;	3115	return;
2458		3116
		3117	EV_FREQUENT_CHECK;
		3118
2459	#if EV_USE_INOTIFY	3119	#if EV_USE_INOTIFY
2460	infy_del (EV_A_ w);	3120	infy_del (EV_A_ w);
2461	#endif	3121	#endif
2462	ev_timer_stop (EV_A_ &w->timer);	3122	ev_timer_stop (EV_A_ &w->timer);
2463		3123
2464	ev_stop (EV_A_ (W)w);	3124	ev_stop (EV_A_ (W)w);
		3125
		3126	EV_FREQUENT_CHECK;
2465	}	3127	}
2466	#endif	3128	#endif
2467		3129
2468	#if EV_IDLE_ENABLE	3130	#if EV_IDLE_ENABLE
2469	void	3131	void
…		…
2471	{	3133	{
2472	if (expect_false (ev_is_active (w)))	3134	if (expect_false (ev_is_active (w)))
2473	return;	3135	return;
2474		3136
2475	pri_adjust (EV_A_ (W)w);	3137	pri_adjust (EV_A_ (W)w);
		3138
		3139	EV_FREQUENT_CHECK;
2476		3140
2477	{	3141	{
2478	int active = ++idlecnt [ABSPRI (w)];	3142	int active = ++idlecnt [ABSPRI (w)];
2479		3143
2480	++idleall;	3144	++idleall;
2481	ev_start (EV_A_ (W)w, active);	3145	ev_start (EV_A_ (W)w, active);
2482		3146
2483	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	3147	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2484	idles [ABSPRI (w)][active - 1] = w;	3148	idles [ABSPRI (w)][active - 1] = w;
2485	}	3149	}
		3150
		3151	EV_FREQUENT_CHECK;
2486	}	3152	}
2487		3153
2488	void	3154	void
2489	ev_idle_stop (EV_P_ ev_idle *w)	3155	ev_idle_stop (EV_P_ ev_idle *w)
2490	{	3156	{
2491	clear_pending (EV_A_ (W)w);	3157	clear_pending (EV_A_ (W)w);
2492	if (expect_false (!ev_is_active (w)))	3158	if (expect_false (!ev_is_active (w)))
2493	return;	3159	return;
2494		3160
		3161	EV_FREQUENT_CHECK;
		3162
2495	{	3163	{
2496	int active = ev_active (w);	3164	int active = ev_active (w);
2497		3165
2498	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3166	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2499	ev_active (idles [ABSPRI (w)][active - 1]) = active;	3167	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2500		3168
2501	ev_stop (EV_A_ (W)w);	3169	ev_stop (EV_A_ (W)w);
2502	--idleall;	3170	--idleall;
2503	}	3171	}
		3172
		3173	EV_FREQUENT_CHECK;
2504	}	3174	}
2505	#endif	3175	#endif
2506		3176
2507	void	3177	void
2508	ev_prepare_start (EV_P_ ev_prepare *w)	3178	ev_prepare_start (EV_P_ ev_prepare *w)
2509	{	3179	{
2510	if (expect_false (ev_is_active (w)))	3180	if (expect_false (ev_is_active (w)))
2511	return;	3181	return;
		3182
		3183	EV_FREQUENT_CHECK;
2512		3184
2513	ev_start (EV_A_ (W)w, ++preparecnt);	3185	ev_start (EV_A_ (W)w, ++preparecnt);
2514	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3186	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2515	prepares [preparecnt - 1] = w;	3187	prepares [preparecnt - 1] = w;
		3188
		3189	EV_FREQUENT_CHECK;
2516	}	3190	}
2517		3191
2518	void	3192	void
2519	ev_prepare_stop (EV_P_ ev_prepare *w)	3193	ev_prepare_stop (EV_P_ ev_prepare *w)
2520	{	3194	{
2521	clear_pending (EV_A_ (W)w);	3195	clear_pending (EV_A_ (W)w);
2522	if (expect_false (!ev_is_active (w)))	3196	if (expect_false (!ev_is_active (w)))
2523	return;	3197	return;
2524		3198
		3199	EV_FREQUENT_CHECK;
		3200
2525	{	3201	{
2526	int active = ev_active (w);	3202	int active = ev_active (w);
2527		3203
2528	prepares [active - 1] = prepares [--preparecnt];	3204	prepares [active - 1] = prepares [--preparecnt];
2529	ev_active (prepares [active - 1]) = active;	3205	ev_active (prepares [active - 1]) = active;
2530	}	3206	}
2531		3207
2532	ev_stop (EV_A_ (W)w);	3208	ev_stop (EV_A_ (W)w);
		3209
		3210	EV_FREQUENT_CHECK;
2533	}	3211	}
2534		3212
2535	void	3213	void
2536	ev_check_start (EV_P_ ev_check *w)	3214	ev_check_start (EV_P_ ev_check *w)
2537	{	3215	{
2538	if (expect_false (ev_is_active (w)))	3216	if (expect_false (ev_is_active (w)))
2539	return;	3217	return;
		3218
		3219	EV_FREQUENT_CHECK;
2540		3220
2541	ev_start (EV_A_ (W)w, ++checkcnt);	3221	ev_start (EV_A_ (W)w, ++checkcnt);
2542	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3222	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2543	checks [checkcnt - 1] = w;	3223	checks [checkcnt - 1] = w;
		3224
		3225	EV_FREQUENT_CHECK;
2544	}	3226	}
2545		3227
2546	void	3228	void
2547	ev_check_stop (EV_P_ ev_check *w)	3229	ev_check_stop (EV_P_ ev_check *w)
2548	{	3230	{
2549	clear_pending (EV_A_ (W)w);	3231	clear_pending (EV_A_ (W)w);
2550	if (expect_false (!ev_is_active (w)))	3232	if (expect_false (!ev_is_active (w)))
2551	return;	3233	return;
2552		3234
		3235	EV_FREQUENT_CHECK;
		3236
2553	{	3237	{
2554	int active = ev_active (w);	3238	int active = ev_active (w);
2555		3239
2556	checks [active - 1] = checks [--checkcnt];	3240	checks [active - 1] = checks [--checkcnt];
2557	ev_active (checks [active - 1]) = active;	3241	ev_active (checks [active - 1]) = active;
2558	}	3242	}
2559		3243
2560	ev_stop (EV_A_ (W)w);	3244	ev_stop (EV_A_ (W)w);
		3245
		3246	EV_FREQUENT_CHECK;
2561	}	3247	}
2562		3248
2563	#if EV_EMBED_ENABLE	3249	#if EV_EMBED_ENABLE
2564	void noinline	3250	void noinline
2565	ev_embed_sweep (EV_P_ ev_embed *w)	3251	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2582	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3268	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2583	{	3269	{
2584	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3270	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2585		3271
2586	{	3272	{
2587	struct ev_loop *loop = w->other;	3273	EV_P = w->other;
2588		3274
2589	while (fdchangecnt)	3275	while (fdchangecnt)
2590	{	3276	{
2591	fd_reify (EV_A);	3277	fd_reify (EV_A);
2592	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3278	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2593	}	3279	}
2594	}	3280	}
2595	}	3281	}
2596		3282
		3283	static void
		3284	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3285	{
		3286	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3287
		3288	ev_embed_stop (EV_A_ w);
		3289
		3290	{
		3291	EV_P = w->other;
		3292
		3293	ev_loop_fork (EV_A);
		3294	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3295	}
		3296
		3297	ev_embed_start (EV_A_ w);
		3298	}
		3299
2597	#if 0	3300	#if 0
2598	static void	3301	static void
2599	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3302	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2600	{	3303	{
2601	ev_idle_stop (EV_A_ idle);	3304	ev_idle_stop (EV_A_ idle);
…		…
2607	{	3310	{
2608	if (expect_false (ev_is_active (w)))	3311	if (expect_false (ev_is_active (w)))
2609	return;	3312	return;
2610		3313
2611	{	3314	{
2612	struct ev_loop *loop = w->other;	3315	EV_P = w->other;
2613	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3316	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2614	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3317	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2615	}	3318	}
		3319
		3320	EV_FREQUENT_CHECK;
2616		3321
2617	ev_set_priority (&w->io, ev_priority (w));	3322	ev_set_priority (&w->io, ev_priority (w));
2618	ev_io_start (EV_A_ &w->io);	3323	ev_io_start (EV_A_ &w->io);
2619		3324
2620	ev_prepare_init (&w->prepare, embed_prepare_cb);	3325	ev_prepare_init (&w->prepare, embed_prepare_cb);
2621	ev_set_priority (&w->prepare, EV_MINPRI);	3326	ev_set_priority (&w->prepare, EV_MINPRI);
2622	ev_prepare_start (EV_A_ &w->prepare);	3327	ev_prepare_start (EV_A_ &w->prepare);
2623		3328
		3329	ev_fork_init (&w->fork, embed_fork_cb);
		3330	ev_fork_start (EV_A_ &w->fork);
		3331
2624	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3332	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2625		3333
2626	ev_start (EV_A_ (W)w, 1);	3334	ev_start (EV_A_ (W)w, 1);
		3335
		3336	EV_FREQUENT_CHECK;
2627	}	3337	}
2628		3338
2629	void	3339	void
2630	ev_embed_stop (EV_P_ ev_embed *w)	3340	ev_embed_stop (EV_P_ ev_embed *w)
2631	{	3341	{
2632	clear_pending (EV_A_ (W)w);	3342	clear_pending (EV_A_ (W)w);
2633	if (expect_false (!ev_is_active (w)))	3343	if (expect_false (!ev_is_active (w)))
2634	return;	3344	return;
2635		3345
		3346	EV_FREQUENT_CHECK;
		3347
2636	ev_io_stop (EV_A_ &w->io);	3348	ev_io_stop (EV_A_ &w->io);
2637	ev_prepare_stop (EV_A_ &w->prepare);	3349	ev_prepare_stop (EV_A_ &w->prepare);
		3350	ev_fork_stop (EV_A_ &w->fork);
2638		3351
2639	ev_stop (EV_A_ (W)w);	3352	EV_FREQUENT_CHECK;
2640	}	3353	}
2641	#endif	3354	#endif
2642		3355
2643	#if EV_FORK_ENABLE	3356	#if EV_FORK_ENABLE
2644	void	3357	void
2645	ev_fork_start (EV_P_ ev_fork *w)	3358	ev_fork_start (EV_P_ ev_fork *w)
2646	{	3359	{
2647	if (expect_false (ev_is_active (w)))	3360	if (expect_false (ev_is_active (w)))
2648	return;	3361	return;
		3362
		3363	EV_FREQUENT_CHECK;
2649		3364
2650	ev_start (EV_A_ (W)w, ++forkcnt);	3365	ev_start (EV_A_ (W)w, ++forkcnt);
2651	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3366	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2652	forks [forkcnt - 1] = w;	3367	forks [forkcnt - 1] = w;
		3368
		3369	EV_FREQUENT_CHECK;
2653	}	3370	}
2654		3371
2655	void	3372	void
2656	ev_fork_stop (EV_P_ ev_fork *w)	3373	ev_fork_stop (EV_P_ ev_fork *w)
2657	{	3374	{
2658	clear_pending (EV_A_ (W)w);	3375	clear_pending (EV_A_ (W)w);
2659	if (expect_false (!ev_is_active (w)))	3376	if (expect_false (!ev_is_active (w)))
2660	return;	3377	return;
2661		3378
		3379	EV_FREQUENT_CHECK;
		3380
2662	{	3381	{
2663	int active = ev_active (w);	3382	int active = ev_active (w);
2664		3383
2665	forks [active - 1] = forks [--forkcnt];	3384	forks [active - 1] = forks [--forkcnt];
2666	ev_active (forks [active - 1]) = active;	3385	ev_active (forks [active - 1]) = active;
2667	}	3386	}
2668		3387
2669	ev_stop (EV_A_ (W)w);	3388	ev_stop (EV_A_ (W)w);
		3389
		3390	EV_FREQUENT_CHECK;
2670	}	3391	}
2671	#endif	3392	#endif
2672		3393
2673	#if EV_ASYNC_ENABLE	3394	#if EV_ASYNC_ENABLE
2674	void	3395	void
…		…
2676	{	3397	{
2677	if (expect_false (ev_is_active (w)))	3398	if (expect_false (ev_is_active (w)))
2678	return;	3399	return;
2679		3400
2680	evpipe_init (EV_A);	3401	evpipe_init (EV_A);
		3402
		3403	EV_FREQUENT_CHECK;
2681		3404
2682	ev_start (EV_A_ (W)w, ++asynccnt);	3405	ev_start (EV_A_ (W)w, ++asynccnt);
2683	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3406	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2684	asyncs [asynccnt - 1] = w;	3407	asyncs [asynccnt - 1] = w;
		3408
		3409	EV_FREQUENT_CHECK;
2685	}	3410	}
2686		3411
2687	void	3412	void
2688	ev_async_stop (EV_P_ ev_async *w)	3413	ev_async_stop (EV_P_ ev_async *w)
2689	{	3414	{
2690	clear_pending (EV_A_ (W)w);	3415	clear_pending (EV_A_ (W)w);
2691	if (expect_false (!ev_is_active (w)))	3416	if (expect_false (!ev_is_active (w)))
2692	return;	3417	return;
2693		3418
		3419	EV_FREQUENT_CHECK;
		3420
2694	{	3421	{
2695	int active = ev_active (w);	3422	int active = ev_active (w);
2696		3423
2697	asyncs [active - 1] = asyncs [--asynccnt];	3424	asyncs [active - 1] = asyncs [--asynccnt];
2698	ev_active (asyncs [active - 1]) = active;	3425	ev_active (asyncs [active - 1]) = active;
2699	}	3426	}
2700		3427
2701	ev_stop (EV_A_ (W)w);	3428	ev_stop (EV_A_ (W)w);
		3429
		3430	EV_FREQUENT_CHECK;
2702	}	3431	}
2703		3432
2704	void	3433	void
2705	ev_async_send (EV_P_ ev_async *w)	3434	ev_async_send (EV_P_ ev_async *w)
2706	{	3435	{
2707	w->sent = 1;	3436	w->sent = 1;
2708	evpipe_write (EV_A_ &gotasync);	3437	evpipe_write (EV_A_ &async_pending);
2709	}	3438	}
2710	#endif	3439	#endif
2711		3440
2712	/*****************************************************************************/	3441	/*****************************************************************************/
2713		3442
…		…
2723	once_cb (EV_P_ struct ev_once *once, int revents)	3452	once_cb (EV_P_ struct ev_once *once, int revents)
2724	{	3453	{
2725	void (*cb)(int revents, void *arg) = once->cb;	3454	void (*cb)(int revents, void *arg) = once->cb;
2726	void *arg = once->arg;	3455	void *arg = once->arg;
2727		3456
2728	ev_io_stop (EV_A_ &once->io);	3457	ev_io_stop (EV_A_ &once->io);
2729	ev_timer_stop (EV_A_ &once->to);	3458	ev_timer_stop (EV_A_ &once->to);
2730	ev_free (once);	3459	ev_free (once);
2731		3460
2732	cb (revents, arg);	3461	cb (revents, arg);
2733	}	3462	}
2734		3463
2735	static void	3464	static void
2736	once_cb_io (EV_P_ ev_io *w, int revents)	3465	once_cb_io (EV_P_ ev_io *w, int revents)
2737	{	3466	{
2738	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3467	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3468
		3469	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2739	}	3470	}
2740		3471
2741	static void	3472	static void
2742	once_cb_to (EV_P_ ev_timer *w, int revents)	3473	once_cb_to (EV_P_ ev_timer *w, int revents)
2743	{	3474	{
2744	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3475	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3476
		3477	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2745	}	3478	}
2746		3479
2747	void	3480	void
2748	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3481	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2749	{	3482	{
…		…
2771	ev_timer_set (&once->to, timeout, 0.);	3504	ev_timer_set (&once->to, timeout, 0.);
2772	ev_timer_start (EV_A_ &once->to);	3505	ev_timer_start (EV_A_ &once->to);
2773	}	3506	}
2774	}	3507	}
2775		3508
		3509	/*****************************************************************************/
		3510
		3511	#if EV_WALK_ENABLE
		3512	void
		3513	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3514	{
		3515	int i, j;
		3516	ev_watcher_list *wl, *wn;
		3517
		3518	if (types & (EV_IO | EV_EMBED))
		3519	for (i = 0; i < anfdmax; ++i)
		3520	for (wl = anfds [i].head; wl; )
		3521	{
		3522	wn = wl->next;
		3523
		3524	#if EV_EMBED_ENABLE
		3525	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3526	{
		3527	if (types & EV_EMBED)
		3528	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3529	}
		3530	else
		3531	#endif
		3532	#if EV_USE_INOTIFY
		3533	if (ev_cb ((ev_io *)wl) == infy_cb)
		3534	;
		3535	else
		3536	#endif
		3537	if ((ev_io *)wl != &pipe_w)
		3538	if (types & EV_IO)
		3539	cb (EV_A_ EV_IO, wl);
		3540
		3541	wl = wn;
		3542	}
		3543
		3544	if (types & (EV_TIMER | EV_STAT))
		3545	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3546	#if EV_STAT_ENABLE
		3547	/*TODO: timer is not always active*/
		3548	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3549	{
		3550	if (types & EV_STAT)
		3551	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3552	}
		3553	else
		3554	#endif
		3555	if (types & EV_TIMER)
		3556	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3557
		3558	#if EV_PERIODIC_ENABLE
		3559	if (types & EV_PERIODIC)
		3560	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3561	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3562	#endif
		3563
		3564	#if EV_IDLE_ENABLE
		3565	if (types & EV_IDLE)
		3566	for (j = NUMPRI; i--; )
		3567	for (i = idlecnt [j]; i--; )
		3568	cb (EV_A_ EV_IDLE, idles [j][i]);
		3569	#endif
		3570
		3571	#if EV_FORK_ENABLE
		3572	if (types & EV_FORK)
		3573	for (i = forkcnt; i--; )
		3574	if (ev_cb (forks [i]) != embed_fork_cb)
		3575	cb (EV_A_ EV_FORK, forks [i]);
		3576	#endif
		3577
		3578	#if EV_ASYNC_ENABLE
		3579	if (types & EV_ASYNC)
		3580	for (i = asynccnt; i--; )
		3581	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3582	#endif
		3583
		3584	if (types & EV_PREPARE)
		3585	for (i = preparecnt; i--; )
		3586	#if EV_EMBED_ENABLE
		3587	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3588	#endif
		3589	cb (EV_A_ EV_PREPARE, prepares [i]);
		3590
		3591	if (types & EV_CHECK)
		3592	for (i = checkcnt; i--; )
		3593	cb (EV_A_ EV_CHECK, checks [i]);
		3594
		3595	if (types & EV_SIGNAL)
		3596	for (i = 0; i < EV_NSIG - 1; ++i)
		3597	for (wl = signals [i].head; wl; )
		3598	{
		3599	wn = wl->next;
		3600	cb (EV_A_ EV_SIGNAL, wl);
		3601	wl = wn;
		3602	}
		3603
		3604	if (types & EV_CHILD)
		3605	for (i = EV_PID_HASHSIZE; i--; )
		3606	for (wl = childs [i]; wl; )
		3607	{
		3608	wn = wl->next;
		3609	cb (EV_A_ EV_CHILD, wl);
		3610	wl = wn;
		3611	}
		3612	/* EV_STAT 0x00001000 /* stat data changed */
		3613	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3614	}
		3615	#endif
		3616
2776	#if EV_MULTIPLICITY	3617	#if EV_MULTIPLICITY
2777	#include "ev_wrap.h"	3618	#include "ev_wrap.h"
2778	#endif	3619	#endif
2779		3620
2780	#ifdef __cplusplus	3621	#ifdef __cplusplus

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