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Comparing libev/ev.c (file contents):
Revision 1.241 by root, Fri May 9 13:57:00 2008 UTC vs.
Revision 1.303 by root, Sun Jul 19 01:36:34 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	#ifndef EV_USE_CLOCK_SYSCALL
		192	# if __linux && __GLIBC__ >= 2
		193	# define EV_USE_CLOCK_SYSCALL 1
		194	# else
		195	# define EV_USE_CLOCK_SYSCALL 0
		196	# endif
		197	#endif
		198
168	#ifndef EV_USE_MONOTONIC	199	#ifndef EV_USE_MONOTONIC
		200	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		201	# define EV_USE_MONOTONIC 1
		202	# else
169	# define EV_USE_MONOTONIC 0	203	# define EV_USE_MONOTONIC 0
		204	# endif
170	#endif	205	#endif
171		206
172	#ifndef EV_USE_REALTIME	207	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	208	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	209	#endif
175		210
176	#ifndef EV_USE_NANOSLEEP	211	#ifndef EV_USE_NANOSLEEP
		212	# if _POSIX_C_SOURCE >= 199309L
		213	# define EV_USE_NANOSLEEP 1
		214	# else
177	# define EV_USE_NANOSLEEP 0	215	# define EV_USE_NANOSLEEP 0
		216	# endif
178	#endif	217	#endif
179		218
180	#ifndef EV_USE_SELECT	219	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	220	# define EV_USE_SELECT 1
182	#endif	221	#endif
…		…
235	# else	274	# else
236	# define EV_USE_EVENTFD 0	275	# define EV_USE_EVENTFD 0
237	# endif	276	# endif
238	#endif	277	#endif
239		278
		279	#ifndef EV_USE_SIGNALFD
		280	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9))
		281	# define EV_USE_SIGNALFD 1
		282	# else
		283	# define EV_USE_SIGNALFD 0
		284	# endif
		285	#endif
		286
		287	#if 0 /* debugging */
		288	# define EV_VERIFY 3
		289	# define EV_USE_4HEAP 1
		290	# define EV_HEAP_CACHE_AT 1
		291	#endif
		292
		293	#ifndef EV_VERIFY
		294	# define EV_VERIFY !EV_MINIMAL
		295	#endif
		296
		297	#ifndef EV_USE_4HEAP
		298	# define EV_USE_4HEAP !EV_MINIMAL
		299	#endif
		300
		301	#ifndef EV_HEAP_CACHE_AT
		302	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		303	#endif
		304
		305	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		306	/* which makes programs even slower. might work on other unices, too. */
		307	#if EV_USE_CLOCK_SYSCALL
		308	# include <syscall.h>
		309	# ifdef SYS_clock_gettime
		310	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		311	# undef EV_USE_MONOTONIC
		312	# define EV_USE_MONOTONIC 1
		313	# else
		314	# undef EV_USE_CLOCK_SYSCALL
		315	# define EV_USE_CLOCK_SYSCALL 0
		316	# endif
		317	#endif
		318
240	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	319	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
241		320
242	#ifndef CLOCK_MONOTONIC	321	#ifndef CLOCK_MONOTONIC
243	# undef EV_USE_MONOTONIC	322	# undef EV_USE_MONOTONIC
244	# define EV_USE_MONOTONIC 0	323	# define EV_USE_MONOTONIC 0
…		…
259	# include <sys/select.h>	338	# include <sys/select.h>
260	# endif	339	# endif
261	#endif	340	#endif
262		341
263	#if EV_USE_INOTIFY	342	#if EV_USE_INOTIFY
		343	# include <sys/utsname.h>
		344	# include <sys/statfs.h>
264	# include <sys/inotify.h>	345	# include <sys/inotify.h>
		346	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		347	# ifndef IN_DONT_FOLLOW
		348	# undef EV_USE_INOTIFY
		349	# define EV_USE_INOTIFY 0
		350	# endif
265	#endif	351	#endif
266		352
267	#if EV_SELECT_IS_WINSOCKET	353	#if EV_SELECT_IS_WINSOCKET
268	# include <winsock.h>	354	# include <winsock.h>
269	#endif	355	#endif
270		356
271	#if EV_USE_EVENTFD	357	#if EV_USE_EVENTFD
272	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	358	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273	# include <stdint.h>	359	# include <stdint.h>
		360	# ifndef EFD_NONBLOCK
		361	# define EFD_NONBLOCK O_NONBLOCK
		362	# endif
		363	# ifndef EFD_CLOEXEC
		364	# define EFD_CLOEXEC O_CLOEXEC
		365	# endif
274	# ifdef __cplusplus	366	# ifdef __cplusplus
275	extern "C" {	367	extern "C" {
276	# endif	368	# endif
277	int eventfd (unsigned int initval, int flags);	369	int eventfd (unsigned int initval, int flags);
278	# ifdef __cplusplus	370	# ifdef __cplusplus
279	}	371	}
280	# endif	372	# endif
281	#endif	373	#endif
282		374
		375	#if EV_USE_SIGNALFD
		376	# include <sys/signalfd.h>
		377	#endif
		378
283	/**/	379	/**/
		380
		381	#if EV_VERIFY >= 3
		382	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		383	#else
		384	# define EV_FREQUENT_CHECK do { } while (0)
		385	#endif
284		386
285	/*	387	/*
286	* This is used to avoid floating point rounding problems.	388	* This is used to avoid floating point rounding problems.
287	* It is added to ev_rt_now when scheduling periodics	389	* It is added to ev_rt_now when scheduling periodics
288	* to ensure progress, time-wise, even when rounding	390	* to ensure progress, time-wise, even when rounding
…		…
315	# define inline_speed static noinline	417	# define inline_speed static noinline
316	#else	418	#else
317	# define inline_speed static inline	419	# define inline_speed static inline
318	#endif	420	#endif
319		421
320	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	422	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		423
		424	#if EV_MINPRI == EV_MAXPRI
		425	# define ABSPRI(w) (((W)w), 0)
		426	#else
321	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	427	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		428	#endif
322		429
323	#define EMPTY /* required for microsofts broken pseudo-c compiler */	430	#define EMPTY /* required for microsofts broken pseudo-c compiler */
324	#define EMPTY2(a,b) /* used to suppress some warnings */	431	#define EMPTY2(a,b) /* used to suppress some warnings */
325		432
326	typedef ev_watcher *W;	433	typedef ev_watcher *W;
…		…
328	typedef ev_watcher_time *WT;	435	typedef ev_watcher_time *WT;
329		436
330	#define ev_active(w) ((W)(w))->active	437	#define ev_active(w) ((W)(w))->active
331	#define ev_at(w) ((WT)(w))->at	438	#define ev_at(w) ((WT)(w))->at
332		439
333	#if EV_USE_MONOTONIC	440	#if EV_USE_REALTIME
334	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	441	/* 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 */	442	/* giving it a reasonably high chance of working on typical architetcures */
		443	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		444	#endif
		445
		446	#if EV_USE_MONOTONIC
336	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	447	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
337	#endif	448	#endif
338		449
339	#ifdef _WIN32	450	#ifdef _WIN32
340	# include "ev_win32.c"	451	# include "ev_win32.c"
…		…
349	{	460	{
350	syserr_cb = cb;	461	syserr_cb = cb;
351	}	462	}
352		463
353	static void noinline	464	static void noinline
354	syserr (const char *msg)	465	ev_syserr (const char *msg)
355	{	466	{
356	if (!msg)	467	if (!msg)
357	msg = "(libev) system error";	468	msg = "(libev) system error";
358		469
359	if (syserr_cb)	470	if (syserr_cb)
…		…
405	#define ev_malloc(size) ev_realloc (0, (size))	516	#define ev_malloc(size) ev_realloc (0, (size))
406	#define ev_free(ptr) ev_realloc ((ptr), 0)	517	#define ev_free(ptr) ev_realloc ((ptr), 0)
407		518
408	/*****************************************************************************/	519	/*****************************************************************************/
409		520
		521	/* set in reify when reification needed */
		522	#define EV_ANFD_REIFY 1
		523
		524	/* file descriptor info structure */
410	typedef struct	525	typedef struct
411	{	526	{
412	WL head;	527	WL head;
413	unsigned char events;	528	unsigned char events; /* the events watched for */
		529	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		530	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
414	unsigned char reify;	531	unsigned char unused;
		532	#if EV_USE_EPOLL
		533	unsigned int egen; /* generation counter to counter epoll bugs */
		534	#endif
415	#if EV_SELECT_IS_WINSOCKET	535	#if EV_SELECT_IS_WINSOCKET
416	SOCKET handle;	536	SOCKET handle;
417	#endif	537	#endif
418	} ANFD;	538	} ANFD;
419		539
		540	/* stores the pending event set for a given watcher */
420	typedef struct	541	typedef struct
421	{	542	{
422	W w;	543	W w;
423	int events;	544	int events; /* the pending event set for the given watcher */
424	} ANPENDING;	545	} ANPENDING;
425		546
426	#if EV_USE_INOTIFY	547	#if EV_USE_INOTIFY
427	/* hash table entry per inotify-id */	548	/* hash table entry per inotify-id */
428	typedef struct	549	typedef struct
…		…
431	} ANFS;	552	} ANFS;
432	#endif	553	#endif
433		554
434	/* Heap Entry */	555	/* Heap Entry */
435	#if EV_HEAP_CACHE_AT	556	#if EV_HEAP_CACHE_AT
		557	/* a heap element */
436	typedef struct {	558	typedef struct {
		559	ev_tstamp at;
437	WT w;	560	WT w;
438	ev_tstamp at;
439	} ANHE;	561	} ANHE;
440		562
441	#define ANHE_w(he) (he) /* access watcher, read-write */	563	#define ANHE_w(he) (he).w /* access watcher, read-write */
442	#define ANHE_at(he) (he)->at /* acces cahced at, read-only */	564	#define ANHE_at(he) (he).at /* access cached at, read-only */
443	#define ANHE_at_set(he) (he)->at = (he)->w->at /* update at from watcher */	565	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
444	#else	566	#else
		567	/* a heap element */
445	typedef WT ANHE;	568	typedef WT ANHE;
446		569
447	#define ANHE_w(he) (he)	570	#define ANHE_w(he) (he)
448	#define ANHE_at(he) (he)->at	571	#define ANHE_at(he) (he)->at
449	#define ANHE_at_set(he)	572	#define ANHE_at_cache(he)
450	#endif	573	#endif
451		574
452	#if EV_MULTIPLICITY	575	#if EV_MULTIPLICITY
453		576
454	struct ev_loop	577	struct ev_loop
…		…
473		596
474	static int ev_default_loop_ptr;	597	static int ev_default_loop_ptr;
475		598
476	#endif	599	#endif
477		600
		601	#if EV_MINIMAL < 2
		602	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		603	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		604	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		605	#else
		606	# define EV_RELEASE_CB (void)0
		607	# define EV_ACQUIRE_CB (void)0
		608	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		609	#endif
		610
		611	#define EVUNLOOP_RECURSE 0x80
		612
478	/*****************************************************************************/	613	/*****************************************************************************/
479		614
		615	#ifndef EV_HAVE_EV_TIME
480	ev_tstamp	616	ev_tstamp
481	ev_time (void)	617	ev_time (void)
482	{	618	{
483	#if EV_USE_REALTIME	619	#if EV_USE_REALTIME
		620	if (expect_true (have_realtime))
		621	{
484	struct timespec ts;	622	struct timespec ts;
485	clock_gettime (CLOCK_REALTIME, &ts);	623	clock_gettime (CLOCK_REALTIME, &ts);
486	return ts.tv_sec + ts.tv_nsec * 1e-9;	624	return ts.tv_sec + ts.tv_nsec * 1e-9;
487	#else	625	}
		626	#endif
		627
488	struct timeval tv;	628	struct timeval tv;
489	gettimeofday (&tv, 0);	629	gettimeofday (&tv, 0);
490	return tv.tv_sec + tv.tv_usec * 1e-6;	630	return tv.tv_sec + tv.tv_usec * 1e-6;
491	#endif
492	}	631	}
		632	#endif
493		633
494	ev_tstamp inline_size	634	inline_size ev_tstamp
495	get_clock (void)	635	get_clock (void)
496	{	636	{
497	#if EV_USE_MONOTONIC	637	#if EV_USE_MONOTONIC
498	if (expect_true (have_monotonic))	638	if (expect_true (have_monotonic))
499	{	639	{
…		…
532	struct timeval tv;	672	struct timeval tv;
533		673
534	tv.tv_sec = (time_t)delay;	674	tv.tv_sec = (time_t)delay;
535	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	675	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
536		676
		677	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		678	/* something not guaranteed by newer posix versions, but guaranteed */
		679	/* by older ones */
537	select (0, 0, 0, 0, &tv);	680	select (0, 0, 0, 0, &tv);
538	#endif	681	#endif
539	}	682	}
540	}	683	}
541		684
542	/*****************************************************************************/	685	/*****************************************************************************/
543		686
544	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	687	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
545		688
546	int inline_size	689	/* find a suitable new size for the given array, */
		690	/* hopefully by rounding to a ncie-to-malloc size */
		691	inline_size int
547	array_nextsize (int elem, int cur, int cnt)	692	array_nextsize (int elem, int cur, int cnt)
548	{	693	{
549	int ncur = cur + 1;	694	int ncur = cur + 1;
550		695
551	do	696	do
…		…
568	array_realloc (int elem, void *base, int *cur, int cnt)	713	array_realloc (int elem, void *base, int *cur, int cnt)
569	{	714	{
570	*cur = array_nextsize (elem, *cur, cnt);	715	*cur = array_nextsize (elem, *cur, cnt);
571	return ev_realloc (base, elem * *cur);	716	return ev_realloc (base, elem * *cur);
572	}	717	}
		718
		719	#define array_init_zero(base,count) \
		720	memset ((void *)(base), 0, sizeof (*(base)) * (count))
573		721
574	#define array_needsize(type,base,cur,cnt,init) \	722	#define array_needsize(type,base,cur,cnt,init) \
575	if (expect_false ((cnt) > (cur))) \	723	if (expect_false ((cnt) > (cur))) \
576	{ \	724	{ \
577	int ocur_ = (cur); \	725	int ocur_ = (cur); \
…		…
589	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	737	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
590	}	738	}
591	#endif	739	#endif
592		740
593	#define array_free(stem, idx) \	741	#define array_free(stem, idx) \
594	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	742	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
595		743
596	/*****************************************************************************/	744	/*****************************************************************************/
		745
		746	/* dummy callback for pending events */
		747	static void noinline
		748	pendingcb (EV_P_ ev_prepare *w, int revents)
		749	{
		750	}
597		751
598	void noinline	752	void noinline
599	ev_feed_event (EV_P_ void *w, int revents)	753	ev_feed_event (EV_P_ void *w, int revents)
600	{	754	{
601	W w_ = (W)w;	755	W w_ = (W)w;
…		…
610	pendings [pri][w_->pending - 1].w = w_;	764	pendings [pri][w_->pending - 1].w = w_;
611	pendings [pri][w_->pending - 1].events = revents;	765	pendings [pri][w_->pending - 1].events = revents;
612	}	766	}
613	}	767	}
614		768
615	void inline_speed	769	inline_speed void
		770	feed_reverse (EV_P_ W w)
		771	{
		772	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		773	rfeeds [rfeedcnt++] = w;
		774	}
		775
		776	inline_size void
		777	feed_reverse_done (EV_P_ int revents)
		778	{
		779	do
		780	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		781	while (rfeedcnt);
		782	}
		783
		784	inline_speed void
616	queue_events (EV_P_ W *events, int eventcnt, int type)	785	queue_events (EV_P_ W *events, int eventcnt, int type)
617	{	786	{
618	int i;	787	int i;
619		788
620	for (i = 0; i < eventcnt; ++i)	789	for (i = 0; i < eventcnt; ++i)
621	ev_feed_event (EV_A_ events [i], type);	790	ev_feed_event (EV_A_ events [i], type);
622	}	791	}
623		792
624	/*****************************************************************************/	793	/*****************************************************************************/
625		794
626	void inline_size	795	inline_speed void
627	anfds_init (ANFD *base, int count)
628	{
629	while (count--)
630	{
631	base->head = 0;
632	base->events = EV_NONE;
633	base->reify = 0;
634
635	++base;
636	}
637	}
638
639	void inline_speed
640	fd_event (EV_P_ int fd, int revents)	796	fd_event_nc (EV_P_ int fd, int revents)
641	{	797	{
642	ANFD *anfd = anfds + fd;	798	ANFD *anfd = anfds + fd;
643	ev_io *w;	799	ev_io *w;
644		800
645	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	801	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
649	if (ev)	805	if (ev)
650	ev_feed_event (EV_A_ (W)w, ev);	806	ev_feed_event (EV_A_ (W)w, ev);
651	}	807	}
652	}	808	}
653		809
		810	/* do not submit kernel events for fds that have reify set */
		811	/* because that means they changed while we were polling for new events */
		812	inline_speed void
		813	fd_event (EV_P_ int fd, int revents)
		814	{
		815	ANFD *anfd = anfds + fd;
		816
		817	if (expect_true (!anfd->reify))
		818	fd_event_nc (EV_A_ fd, revents);
		819	}
		820
654	void	821	void
655	ev_feed_fd_event (EV_P_ int fd, int revents)	822	ev_feed_fd_event (EV_P_ int fd, int revents)
656	{	823	{
657	if (fd >= 0 && fd < anfdmax)	824	if (fd >= 0 && fd < anfdmax)
658	fd_event (EV_A_ fd, revents);	825	fd_event_nc (EV_A_ fd, revents);
659	}	826	}
660		827
661	void inline_size	828	/* make sure the external fd watch events are in-sync */
		829	/* with the kernel/libev internal state */
		830	inline_size void
662	fd_reify (EV_P)	831	fd_reify (EV_P)
663	{	832	{
664	int i;	833	int i;
665		834
666	for (i = 0; i < fdchangecnt; ++i)	835	for (i = 0; i < fdchangecnt; ++i)
…		…
675	events |= (unsigned char)w->events;	844	events |= (unsigned char)w->events;
676		845
677	#if EV_SELECT_IS_WINSOCKET	846	#if EV_SELECT_IS_WINSOCKET
678	if (events)	847	if (events)
679	{	848	{
680	unsigned long argp;	849	unsigned long arg;
681	#ifdef EV_FD_TO_WIN32_HANDLE	850	#ifdef EV_FD_TO_WIN32_HANDLE
682	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	851	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
683	#else	852	#else
684	anfd->handle = _get_osfhandle (fd);	853	anfd->handle = _get_osfhandle (fd);
685	#endif	854	#endif
686	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	855	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
687	}	856	}
688	#endif	857	#endif
689		858
690	{	859	{
691	unsigned char o_events = anfd->events;	860	unsigned char o_events = anfd->events;
692	unsigned char o_reify = anfd->reify;	861	unsigned char o_reify = anfd->reify;
693		862
694	anfd->reify = 0;	863	anfd->reify = 0;
695	anfd->events = events;	864	anfd->events = events;
696		865
697	if (o_events != events || o_reify & EV_IOFDSET)	866	if (o_events != events || o_reify & EV__IOFDSET)
698	backend_modify (EV_A_ fd, o_events, events);	867	backend_modify (EV_A_ fd, o_events, events);
699	}	868	}
700	}	869	}
701		870
702	fdchangecnt = 0;	871	fdchangecnt = 0;
703	}	872	}
704		873
705	void inline_size	874	/* something about the given fd changed */
		875	inline_size void
706	fd_change (EV_P_ int fd, int flags)	876	fd_change (EV_P_ int fd, int flags)
707	{	877	{
708	unsigned char reify = anfds [fd].reify;	878	unsigned char reify = anfds [fd].reify;
709	anfds [fd].reify |= flags;	879	anfds [fd].reify |= flags;
710		880
…		…
714	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	884	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
715	fdchanges [fdchangecnt - 1] = fd;	885	fdchanges [fdchangecnt - 1] = fd;
716	}	886	}
717	}	887	}
718		888
719	void inline_speed	889	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		890	inline_speed void
720	fd_kill (EV_P_ int fd)	891	fd_kill (EV_P_ int fd)
721	{	892	{
722	ev_io *w;	893	ev_io *w;
723		894
724	while ((w = (ev_io *)anfds [fd].head))	895	while ((w = (ev_io *)anfds [fd].head))
…		…
726	ev_io_stop (EV_A_ w);	897	ev_io_stop (EV_A_ w);
727	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	898	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
728	}	899	}
729	}	900	}
730		901
731	int inline_size	902	/* check whether the given fd is atcually valid, for error recovery */
		903	inline_size int
732	fd_valid (int fd)	904	fd_valid (int fd)
733	{	905	{
734	#ifdef _WIN32	906	#ifdef _WIN32
735	return _get_osfhandle (fd) != -1;	907	return _get_osfhandle (fd) != -1;
736	#else	908	#else
…		…
744	{	916	{
745	int fd;	917	int fd;
746		918
747	for (fd = 0; fd < anfdmax; ++fd)	919	for (fd = 0; fd < anfdmax; ++fd)
748	if (anfds [fd].events)	920	if (anfds [fd].events)
749	if (!fd_valid (fd) == -1 && errno == EBADF)	921	if (!fd_valid (fd) && errno == EBADF)
750	fd_kill (EV_A_ fd);	922	fd_kill (EV_A_ fd);
751	}	923	}
752		924
753	/* called on ENOMEM in select/poll to kill some fds and retry */	925	/* called on ENOMEM in select/poll to kill some fds and retry */
754	static void noinline	926	static void noinline
…		…
772		944
773	for (fd = 0; fd < anfdmax; ++fd)	945	for (fd = 0; fd < anfdmax; ++fd)
774	if (anfds [fd].events)	946	if (anfds [fd].events)
775	{	947	{
776	anfds [fd].events = 0;	948	anfds [fd].events = 0;
		949	anfds [fd].emask = 0;
777	fd_change (EV_A_ fd, EV_IOFDSET | 1);	950	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
778	}	951	}
779	}	952	}
780		953
781	/*****************************************************************************/	954	/*****************************************************************************/
782		955
…		…
790	* at the moment we allow libev the luxury of two heaps,	963	* at the moment we allow libev the luxury of two heaps,
791	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap	964	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
792	* which is more cache-efficient.	965	* which is more cache-efficient.
793	* the difference is about 5% with 50000+ watchers.	966	* the difference is about 5% with 50000+ watchers.
794	*/	967	*/
795	#define EV_USE_4HEAP !EV_MINIMAL
796	#if EV_USE_4HEAP	968	#if EV_USE_4HEAP
797		969
798	#define DHEAP 4	970	#define DHEAP 4
799	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	971	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
800		972	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
801	/* towards the root */	973	#define UPHEAP_DONE(p,k) ((p) == (k))
802	void inline_speed
803	upheap (ANHE *heap, int k)
804	{
805	ANHE he = heap [k];
806
807	for (;;)
808	{
809	int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
810
811	if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
812	break;
813
814	heap [k] = heap [p];
815	ev_active (ANHE_w (heap [k])) = k;
816	k = p;
817	}
818
819	ev_active (ANHE_w (he)) = k;
820	heap [k] = he;
821	}
822		974
823	/* away from the root */	975	/* away from the root */
824	void inline_speed	976	inline_speed void
825	downheap (ANHE *heap, int N, int k)	977	downheap (ANHE *heap, int N, int k)
826	{	978	{
827	ANHE he = heap [k];	979	ANHE he = heap [k];
828	ANHE *E = heap + N + HEAP0;	980	ANHE *E = heap + N + HEAP0;
829		981
830	for (;;)	982	for (;;)
831	{	983	{
832	ev_tstamp minat;	984	ev_tstamp minat;
833	ANHE *minpos;	985	ANHE *minpos;
834	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0;	986	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
835		987
836	// find minimum child	988	/* find minimum child */
837	if (expect_true (pos + DHEAP - 1 < E))	989	if (expect_true (pos + DHEAP - 1 < E))
838	{	990	{
839	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));	991	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
840	if (ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));	992	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
841	if (ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));	993	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
842	if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));	994	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
843	}	995	}
844	else if (pos < E)	996	else if (pos < E)
845	{	997	{
846	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));	998	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
847	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));	999	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
…		…
852	break;	1004	break;
853		1005
854	if (ANHE_at (he) <= minat)	1006	if (ANHE_at (he) <= minat)
855	break;	1007	break;
856		1008
		1009	heap [k] = *minpos;
857	ev_active (ANHE_w (*minpos)) = k;	1010	ev_active (ANHE_w (*minpos)) = k;
858	heap [k] = *minpos;
859		1011
860	k = minpos - heap;	1012	k = minpos - heap;
861	}	1013	}
862		1014
		1015	heap [k] = he;
863	ev_active (ANHE_w (he)) = k;	1016	ev_active (ANHE_w (he)) = k;
864	heap [k] = he;
865	}	1017	}
866		1018
867	#else // 4HEAP	1019	#else /* 4HEAP */
868		1020
869	#define HEAP0 1	1021	#define HEAP0 1
		1022	#define HPARENT(k) ((k) >> 1)
		1023	#define UPHEAP_DONE(p,k) (!(p))
870		1024
871	/* towards the root */	1025	/* away from the root */
872	void inline_speed	1026	inline_speed void
873	upheap (ANHE *heap, int k)	1027	downheap (ANHE *heap, int N, int k)
874	{	1028	{
875	ANHE he = heap [k];	1029	ANHE he = heap [k];
876		1030
877	for (;;)	1031	for (;;)
878	{	1032	{
879	int p = k >> 1;	1033	int c = k << 1;
880		1034
881	/* maybe we could use a dummy element at heap [0]? */	1035	if (c > N + HEAP0 - 1)
882	if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
883	break;	1036	break;
884		1037
885	heap [k] = heap [p];
886	ev_active (ANHE_w (heap [k])) = k;
887	k = p;
888	}
889
890	heap [k] = w;
891	ev_active (ANHE_w (heap [k])) = k;
892	}
893
894	/* away from the root */
895	void inline_speed
896	downheap (ANHE *heap, int N, int k)
897	{
898	ANHE he = heap [k];
899
900	for (;;)
901	{
902	int c = k << 1;
903
904	if (c > N)
905	break;
906
907	c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1038	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
908	? 1 : 0;	1039	? 1 : 0;
909		1040
910	if (w->at <= ANHE_at (heap [c]))	1041	if (ANHE_at (he) <= ANHE_at (heap [c]))
911	break;	1042	break;
912		1043
913	heap [k] = heap [c];	1044	heap [k] = heap [c];
914	ev_active (ANHE_w (heap [k])) = k;	1045	ev_active (ANHE_w (heap [k])) = k;
915		1046
…		…
919	heap [k] = he;	1050	heap [k] = he;
920	ev_active (ANHE_w (he)) = k;	1051	ev_active (ANHE_w (he)) = k;
921	}	1052	}
922	#endif	1053	#endif
923		1054
924	void inline_size	1055	/* towards the root */
		1056	inline_speed void
		1057	upheap (ANHE *heap, int k)
		1058	{
		1059	ANHE he = heap [k];
		1060
		1061	for (;;)
		1062	{
		1063	int p = HPARENT (k);
		1064
		1065	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1066	break;
		1067
		1068	heap [k] = heap [p];
		1069	ev_active (ANHE_w (heap [k])) = k;
		1070	k = p;
		1071	}
		1072
		1073	heap [k] = he;
		1074	ev_active (ANHE_w (he)) = k;
		1075	}
		1076
		1077	/* move an element suitably so it is in a correct place */
		1078	inline_size void
925	adjustheap (ANHE *heap, int N, int k)	1079	adjustheap (ANHE *heap, int N, int k)
926	{	1080	{
		1081	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
927	upheap (heap, k);	1082	upheap (heap, k);
		1083	else
928	downheap (heap, N, k);	1084	downheap (heap, N, k);
		1085	}
		1086
		1087	/* rebuild the heap: this function is used only once and executed rarely */
		1088	inline_size void
		1089	reheap (ANHE *heap, int N)
		1090	{
		1091	int i;
		1092
		1093	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1094	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1095	for (i = 0; i < N; ++i)
		1096	upheap (heap, i + HEAP0);
929	}	1097	}
930		1098
931	/*****************************************************************************/	1099	/*****************************************************************************/
932		1100
		1101	/* associate signal watchers to a signal signal */
933	typedef struct	1102	typedef struct
934	{	1103	{
935	WL head;	1104	WL head;
936	EV_ATOMIC_T gotsig;	1105	EV_ATOMIC_T gotsig;
937	} ANSIG;	1106	} ANSIG;
…		…
939	static ANSIG *signals;	1108	static ANSIG *signals;
940	static int signalmax;	1109	static int signalmax;
941		1110
942	static EV_ATOMIC_T gotsig;	1111	static EV_ATOMIC_T gotsig;
943		1112
944	void inline_size
945	signals_init (ANSIG *base, int count)
946	{
947	while (count--)
948	{
949	base->head = 0;
950	base->gotsig = 0;
951
952	++base;
953	}
954	}
955
956	/*****************************************************************************/	1113	/*****************************************************************************/
957		1114
958	void inline_speed	1115	/* used to prepare libev internal fd's */
		1116	/* this is not fork-safe */
		1117	inline_speed void
959	fd_intern (int fd)	1118	fd_intern (int fd)
960	{	1119	{
961	#ifdef _WIN32	1120	#ifdef _WIN32
962	int arg = 1;	1121	unsigned long arg = 1;
963	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1122	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
964	#else	1123	#else
965	fcntl (fd, F_SETFD, FD_CLOEXEC);	1124	fcntl (fd, F_SETFD, FD_CLOEXEC);
966	fcntl (fd, F_SETFL, O_NONBLOCK);	1125	fcntl (fd, F_SETFL, O_NONBLOCK);
967	#endif	1126	#endif
968	}	1127	}
969		1128
970	static void noinline	1129	static void noinline
971	evpipe_init (EV_P)	1130	evpipe_init (EV_P)
972	{	1131	{
973	if (!ev_is_active (&pipeev))	1132	if (!ev_is_active (&pipe_w))
974	{	1133	{
975	#if EV_USE_EVENTFD	1134	#if EV_USE_EVENTFD
		1135	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1136	if (evfd < 0 && errno == EINVAL)
976	if ((evfd = eventfd (0, 0)) >= 0)	1137	evfd = eventfd (0, 0);
		1138
		1139	if (evfd >= 0)
977	{	1140	{
978	evpipe [0] = -1;	1141	evpipe [0] = -1;
979	fd_intern (evfd);	1142	fd_intern (evfd); /* doing it twice doesn't hurt */
980	ev_io_set (&pipeev, evfd, EV_READ);	1143	ev_io_set (&pipe_w, evfd, EV_READ);
981	}	1144	}
982	else	1145	else
983	#endif	1146	#endif
984	{	1147	{
985	while (pipe (evpipe))	1148	while (pipe (evpipe))
986	syserr ("(libev) error creating signal/async pipe");	1149	ev_syserr ("(libev) error creating signal/async pipe");
987		1150
988	fd_intern (evpipe [0]);	1151	fd_intern (evpipe [0]);
989	fd_intern (evpipe [1]);	1152	fd_intern (evpipe [1]);
990	ev_io_set (&pipeev, evpipe [0], EV_READ);	1153	ev_io_set (&pipe_w, evpipe [0], EV_READ);
991	}	1154	}
992		1155
993	ev_io_start (EV_A_ &pipeev);	1156	ev_io_start (EV_A_ &pipe_w);
994	ev_unref (EV_A); /* watcher should not keep loop alive */	1157	ev_unref (EV_A); /* watcher should not keep loop alive */
995	}	1158	}
996	}	1159	}
997		1160
998	void inline_size	1161	inline_size void
999	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1162	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1000	{	1163	{
1001	if (!*flag)	1164	if (!*flag)
1002	{	1165	{
1003	int old_errno = errno; /* save errno because write might clobber it */	1166	int old_errno = errno; /* save errno because write might clobber it */
…		…
1016		1179
1017	errno = old_errno;	1180	errno = old_errno;
1018	}	1181	}
1019	}	1182	}
1020		1183
		1184	/* called whenever the libev signal pipe */
		1185	/* got some events (signal, async) */
1021	static void	1186	static void
1022	pipecb (EV_P_ ev_io *iow, int revents)	1187	pipecb (EV_P_ ev_io *iow, int revents)
1023	{	1188	{
1024	#if EV_USE_EVENTFD	1189	#if EV_USE_EVENTFD
1025	if (evfd >= 0)	1190	if (evfd >= 0)
…		…
1081	ev_feed_signal_event (EV_P_ int signum)	1246	ev_feed_signal_event (EV_P_ int signum)
1082	{	1247	{
1083	WL w;	1248	WL w;
1084		1249
1085	#if EV_MULTIPLICITY	1250	#if EV_MULTIPLICITY
1086	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1251	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1087	#endif	1252	#endif
1088		1253
1089	--signum;	1254	--signum;
1090		1255
1091	if (signum < 0 || signum >= signalmax)	1256	if (signum < 0 || signum >= signalmax)
…		…
1095		1260
1096	for (w = signals [signum].head; w; w = w->next)	1261	for (w = signals [signum].head; w; w = w->next)
1097	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1262	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1098	}	1263	}
1099		1264
		1265	#if EV_USE_SIGNALFD
		1266	static void
		1267	sigfdcb (EV_P_ ev_io *iow, int revents)
		1268	{
		1269	struct signalfd_siginfo si[4], *sip;
		1270
		1271	for (;;)
		1272	{
		1273	ssize_t res = read (sigfd, si, sizeof (si));
		1274
		1275	/* not ISO-C, as res might be -1, but works with SuS */
		1276	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1277	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1278
		1279	if (res < (ssize_t)sizeof (si))
		1280	break;
		1281	}
		1282	}
		1283	#endif
		1284
1100	/*****************************************************************************/	1285	/*****************************************************************************/
1101		1286
1102	static WL childs [EV_PID_HASHSIZE];	1287	static WL childs [EV_PID_HASHSIZE];
1103		1288
1104	#ifndef _WIN32	1289	#ifndef _WIN32
…		…
1107		1292
1108	#ifndef WIFCONTINUED	1293	#ifndef WIFCONTINUED
1109	# define WIFCONTINUED(status) 0	1294	# define WIFCONTINUED(status) 0
1110	#endif	1295	#endif
1111		1296
1112	void inline_speed	1297	/* handle a single child status event */
		1298	inline_speed void
1113	child_reap (EV_P_ int chain, int pid, int status)	1299	child_reap (EV_P_ int chain, int pid, int status)
1114	{	1300	{
1115	ev_child *w;	1301	ev_child *w;
1116	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1302	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1117		1303
…		…
1130		1316
1131	#ifndef WCONTINUED	1317	#ifndef WCONTINUED
1132	# define WCONTINUED 0	1318	# define WCONTINUED 0
1133	#endif	1319	#endif
1134		1320
		1321	/* called on sigchld etc., calls waitpid */
1135	static void	1322	static void
1136	childcb (EV_P_ ev_signal *sw, int revents)	1323	childcb (EV_P_ ev_signal *sw, int revents)
1137	{	1324	{
1138	int pid, status;	1325	int pid, status;
1139		1326
…		…
1220	/* kqueue is borked on everything but netbsd apparently */	1407	/* kqueue is borked on everything but netbsd apparently */
1221	/* it usually doesn't work correctly on anything but sockets and pipes */	1408	/* it usually doesn't work correctly on anything but sockets and pipes */
1222	flags &= ~EVBACKEND_KQUEUE;	1409	flags &= ~EVBACKEND_KQUEUE;
1223	#endif	1410	#endif
1224	#ifdef __APPLE__	1411	#ifdef __APPLE__
1225	// flags &= ~EVBACKEND_KQUEUE; for documentation	1412	/* only select works correctly on that "unix-certified" platform */
1226	flags &= ~EVBACKEND_POLL;	1413	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1414	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1227	#endif	1415	#endif
1228		1416
1229	return flags;	1417	return flags;
1230	}	1418	}
1231		1419
…		…
1245	ev_backend (EV_P)	1433	ev_backend (EV_P)
1246	{	1434	{
1247	return backend;	1435	return backend;
1248	}	1436	}
1249		1437
		1438	#if EV_MINIMAL < 2
1250	unsigned int	1439	unsigned int
1251	ev_loop_count (EV_P)	1440	ev_loop_count (EV_P)
1252	{	1441	{
1253	return loop_count;	1442	return loop_count;
1254	}	1443	}
1255		1444
		1445	unsigned int
		1446	ev_loop_depth (EV_P)
		1447	{
		1448	return loop_depth;
		1449	}
		1450
1256	void	1451	void
1257	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1452	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1258	{	1453	{
1259	io_blocktime = interval;	1454	io_blocktime = interval;
1260	}	1455	}
…		…
1263	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1458	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1264	{	1459	{
1265	timeout_blocktime = interval;	1460	timeout_blocktime = interval;
1266	}	1461	}
1267		1462
		1463	void
		1464	ev_set_userdata (EV_P_ void *data)
		1465	{
		1466	userdata = data;
		1467	}
		1468
		1469	void *
		1470	ev_userdata (EV_P)
		1471	{
		1472	return userdata;
		1473	}
		1474
		1475	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1476	{
		1477	invoke_cb = invoke_pending_cb;
		1478	}
		1479
		1480	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1481	{
		1482	release_cb = release;
		1483	acquire_cb = acquire;
		1484	}
		1485	#endif
		1486
		1487	/* initialise a loop structure, must be zero-initialised */
1268	static void noinline	1488	static void noinline
1269	loop_init (EV_P_ unsigned int flags)	1489	loop_init (EV_P_ unsigned int flags)
1270	{	1490	{
1271	if (!backend)	1491	if (!backend)
1272	{	1492	{
		1493	#if EV_USE_REALTIME
		1494	if (!have_realtime)
		1495	{
		1496	struct timespec ts;
		1497
		1498	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1499	have_realtime = 1;
		1500	}
		1501	#endif
		1502
1273	#if EV_USE_MONOTONIC	1503	#if EV_USE_MONOTONIC
		1504	if (!have_monotonic)
1274	{	1505	{
1275	struct timespec ts;	1506	struct timespec ts;
		1507
1276	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1508	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1277	have_monotonic = 1;	1509	have_monotonic = 1;
1278	}	1510	}
1279	#endif	1511	#endif
1280		1512
1281	ev_rt_now = ev_time ();	1513	ev_rt_now = ev_time ();
1282	mn_now = get_clock ();	1514	mn_now = get_clock ();
1283	now_floor = mn_now;	1515	now_floor = mn_now;
1284	rtmn_diff = ev_rt_now - mn_now;	1516	rtmn_diff = ev_rt_now - mn_now;
		1517	#if EV_MINIMAL < 2
		1518	invoke_cb = ev_invoke_pending;
		1519	#endif
1285		1520
1286	io_blocktime = 0.;	1521	io_blocktime = 0.;
1287	timeout_blocktime = 0.;	1522	timeout_blocktime = 0.;
1288	backend = 0;	1523	backend = 0;
1289	backend_fd = -1;	1524	backend_fd = -1;
1290	gotasync = 0;	1525	gotasync = 0;
1291	#if EV_USE_INOTIFY	1526	#if EV_USE_INOTIFY
1292	fs_fd = -2;	1527	fs_fd = -2;
1293	#endif	1528	#endif
		1529	#if EV_USE_SIGNALFD
		1530	sigfd = -2;
		1531	#endif
1294		1532
1295	/* pid check not overridable via env */	1533	/* pid check not overridable via env */
1296	#ifndef _WIN32	1534	#ifndef _WIN32
1297	if (flags & EVFLAG_FORKCHECK)	1535	if (flags & EVFLAG_FORKCHECK)
1298	curpid = getpid ();	1536	curpid = getpid ();
…		…
1320	#endif	1558	#endif
1321	#if EV_USE_SELECT	1559	#if EV_USE_SELECT
1322	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1560	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1323	#endif	1561	#endif
1324		1562
		1563	ev_prepare_init (&pending_w, pendingcb);
		1564
1325	ev_init (&pipeev, pipecb);	1565	ev_init (&pipe_w, pipecb);
1326	ev_set_priority (&pipeev, EV_MAXPRI);	1566	ev_set_priority (&pipe_w, EV_MAXPRI);
1327	}	1567	}
1328	}	1568	}
1329		1569
		1570	/* free up a loop structure */
1330	static void noinline	1571	static void noinline
1331	loop_destroy (EV_P)	1572	loop_destroy (EV_P)
1332	{	1573	{
1333	int i;	1574	int i;
1334		1575
1335	if (ev_is_active (&pipeev))	1576	if (ev_is_active (&pipe_w))
1336	{	1577	{
1337	ev_ref (EV_A); /* signal watcher */	1578	/*ev_ref (EV_A);*/
1338	ev_io_stop (EV_A_ &pipeev);	1579	/*ev_io_stop (EV_A_ &pipe_w);*/
1339		1580
1340	#if EV_USE_EVENTFD	1581	#if EV_USE_EVENTFD
1341	if (evfd >= 0)	1582	if (evfd >= 0)
1342	close (evfd);	1583	close (evfd);
1343	#endif	1584	#endif
…		…
1347	close (evpipe [0]);	1588	close (evpipe [0]);
1348	close (evpipe [1]);	1589	close (evpipe [1]);
1349	}	1590	}
1350	}	1591	}
1351		1592
		1593	#if EV_USE_SIGNALFD
		1594	if (ev_is_active (&sigfd_w))
		1595	{
		1596	/*ev_ref (EV_A);*/
		1597	/*ev_io_stop (EV_A_ &sigfd_w);*/
		1598
		1599	close (sigfd);
		1600	}
		1601	#endif
		1602
1352	#if EV_USE_INOTIFY	1603	#if EV_USE_INOTIFY
1353	if (fs_fd >= 0)	1604	if (fs_fd >= 0)
1354	close (fs_fd);	1605	close (fs_fd);
1355	#endif	1606	#endif
1356		1607
…		…
1382	}	1633	}
1383		1634
1384	ev_free (anfds); anfdmax = 0;	1635	ev_free (anfds); anfdmax = 0;
1385		1636
1386	/* have to use the microsoft-never-gets-it-right macro */	1637	/* have to use the microsoft-never-gets-it-right macro */
		1638	array_free (rfeed, EMPTY);
1387	array_free (fdchange, EMPTY);	1639	array_free (fdchange, EMPTY);
1388	array_free (timer, EMPTY);	1640	array_free (timer, EMPTY);
1389	#if EV_PERIODIC_ENABLE	1641	#if EV_PERIODIC_ENABLE
1390	array_free (periodic, EMPTY);	1642	array_free (periodic, EMPTY);
1391	#endif	1643	#endif
…		…
1400		1652
1401	backend = 0;	1653	backend = 0;
1402	}	1654	}
1403		1655
1404	#if EV_USE_INOTIFY	1656	#if EV_USE_INOTIFY
1405	void inline_size infy_fork (EV_P);	1657	inline_size void infy_fork (EV_P);
1406	#endif	1658	#endif
1407		1659
1408	void inline_size	1660	inline_size void
1409	loop_fork (EV_P)	1661	loop_fork (EV_P)
1410	{	1662	{
1411	#if EV_USE_PORT	1663	#if EV_USE_PORT
1412	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1664	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1413	#endif	1665	#endif
…		…
1419	#endif	1671	#endif
1420	#if EV_USE_INOTIFY	1672	#if EV_USE_INOTIFY
1421	infy_fork (EV_A);	1673	infy_fork (EV_A);
1422	#endif	1674	#endif
1423		1675
1424	if (ev_is_active (&pipeev))	1676	if (ev_is_active (&pipe_w))
1425	{	1677	{
1426	/* this "locks" the handlers against writing to the pipe */	1678	/* this "locks" the handlers against writing to the pipe */
1427	/* while we modify the fd vars */	1679	/* while we modify the fd vars */
1428	gotsig = 1;	1680	gotsig = 1;
1429	#if EV_ASYNC_ENABLE	1681	#if EV_ASYNC_ENABLE
1430	gotasync = 1;	1682	gotasync = 1;
1431	#endif	1683	#endif
1432		1684
1433	ev_ref (EV_A);	1685	ev_ref (EV_A);
1434	ev_io_stop (EV_A_ &pipeev);	1686	ev_io_stop (EV_A_ &pipe_w);
1435		1687
1436	#if EV_USE_EVENTFD	1688	#if EV_USE_EVENTFD
1437	if (evfd >= 0)	1689	if (evfd >= 0)
1438	close (evfd);	1690	close (evfd);
1439	#endif	1691	#endif
…		…
1444	close (evpipe [1]);	1696	close (evpipe [1]);
1445	}	1697	}
1446		1698
1447	evpipe_init (EV_A);	1699	evpipe_init (EV_A);
1448	/* now iterate over everything, in case we missed something */	1700	/* now iterate over everything, in case we missed something */
1449	pipecb (EV_A_ &pipeev, EV_READ);	1701	pipecb (EV_A_ &pipe_w, EV_READ);
1450	}	1702	}
1451		1703
1452	postfork = 0;	1704	postfork = 0;
1453	}	1705	}
1454		1706
1455	#if EV_MULTIPLICITY	1707	#if EV_MULTIPLICITY
		1708
1456	struct ev_loop *	1709	struct ev_loop *
1457	ev_loop_new (unsigned int flags)	1710	ev_loop_new (unsigned int flags)
1458	{	1711	{
1459	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1712	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1460		1713
1461	memset (loop, 0, sizeof (struct ev_loop));	1714	memset (loop, 0, sizeof (struct ev_loop));
1462
1463	loop_init (EV_A_ flags);	1715	loop_init (EV_A_ flags);
1464		1716
1465	if (ev_backend (EV_A))	1717	if (ev_backend (EV_A))
1466	return loop;	1718	return loop;
1467		1719
…		…
1477		1729
1478	void	1730	void
1479	ev_loop_fork (EV_P)	1731	ev_loop_fork (EV_P)
1480	{	1732	{
1481	postfork = 1; /* must be in line with ev_default_fork */	1733	postfork = 1; /* must be in line with ev_default_fork */
		1734	}
		1735	#endif /* multiplicity */
		1736
		1737	#if EV_VERIFY
		1738	static void noinline
		1739	verify_watcher (EV_P_ W w)
		1740	{
		1741	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1742
		1743	if (w->pending)
		1744	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1745	}
		1746
		1747	static void noinline
		1748	verify_heap (EV_P_ ANHE *heap, int N)
		1749	{
		1750	int i;
		1751
		1752	for (i = HEAP0; i < N + HEAP0; ++i)
		1753	{
		1754	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1755	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1756	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1757
		1758	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1759	}
		1760	}
		1761
		1762	static void noinline
		1763	array_verify (EV_P_ W *ws, int cnt)
		1764	{
		1765	while (cnt--)
		1766	{
		1767	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1768	verify_watcher (EV_A_ ws [cnt]);
		1769	}
		1770	}
		1771	#endif
		1772
		1773	#if EV_MINIMAL < 2
		1774	void
		1775	ev_loop_verify (EV_P)
		1776	{
		1777	#if EV_VERIFY
		1778	int i;
		1779	WL w;
		1780
		1781	assert (activecnt >= -1);
		1782
		1783	assert (fdchangemax >= fdchangecnt);
		1784	for (i = 0; i < fdchangecnt; ++i)
		1785	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1786
		1787	assert (anfdmax >= 0);
		1788	for (i = 0; i < anfdmax; ++i)
		1789	for (w = anfds [i].head; w; w = w->next)
		1790	{
		1791	verify_watcher (EV_A_ (W)w);
		1792	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1793	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1794	}
		1795
		1796	assert (timermax >= timercnt);
		1797	verify_heap (EV_A_ timers, timercnt);
		1798
		1799	#if EV_PERIODIC_ENABLE
		1800	assert (periodicmax >= periodiccnt);
		1801	verify_heap (EV_A_ periodics, periodiccnt);
		1802	#endif
		1803
		1804	for (i = NUMPRI; i--; )
		1805	{
		1806	assert (pendingmax [i] >= pendingcnt [i]);
		1807	#if EV_IDLE_ENABLE
		1808	assert (idleall >= 0);
		1809	assert (idlemax [i] >= idlecnt [i]);
		1810	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1811	#endif
		1812	}
		1813
		1814	#if EV_FORK_ENABLE
		1815	assert (forkmax >= forkcnt);
		1816	array_verify (EV_A_ (W *)forks, forkcnt);
		1817	#endif
		1818
		1819	#if EV_ASYNC_ENABLE
		1820	assert (asyncmax >= asynccnt);
		1821	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1822	#endif
		1823
		1824	assert (preparemax >= preparecnt);
		1825	array_verify (EV_A_ (W *)prepares, preparecnt);
		1826
		1827	assert (checkmax >= checkcnt);
		1828	array_verify (EV_A_ (W *)checks, checkcnt);
		1829
		1830	# if 0
		1831	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1832	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
		1833	# endif
		1834	#endif
1482	}	1835	}
1483	#endif	1836	#endif
1484		1837
1485	#if EV_MULTIPLICITY	1838	#if EV_MULTIPLICITY
1486	struct ev_loop *	1839	struct ev_loop *
…		…
1521	{	1874	{
1522	#if EV_MULTIPLICITY	1875	#if EV_MULTIPLICITY
1523	struct ev_loop *loop = ev_default_loop_ptr;	1876	struct ev_loop *loop = ev_default_loop_ptr;
1524	#endif	1877	#endif
1525		1878
		1879	ev_default_loop_ptr = 0;
		1880
1526	#ifndef _WIN32	1881	#ifndef _WIN32
1527	ev_ref (EV_A); /* child watcher */	1882	ev_ref (EV_A); /* child watcher */
1528	ev_signal_stop (EV_A_ &childev);	1883	ev_signal_stop (EV_A_ &childev);
1529	#endif	1884	#endif
1530		1885
…		…
1536	{	1891	{
1537	#if EV_MULTIPLICITY	1892	#if EV_MULTIPLICITY
1538	struct ev_loop *loop = ev_default_loop_ptr;	1893	struct ev_loop *loop = ev_default_loop_ptr;
1539	#endif	1894	#endif
1540		1895
1541	if (backend)
1542	postfork = 1; /* must be in line with ev_loop_fork */	1896	postfork = 1; /* must be in line with ev_loop_fork */
1543	}	1897	}
1544		1898
1545	/*****************************************************************************/	1899	/*****************************************************************************/
1546		1900
1547	void	1901	void
1548	ev_invoke (EV_P_ void *w, int revents)	1902	ev_invoke (EV_P_ void *w, int revents)
1549	{	1903	{
1550	EV_CB_INVOKE ((W)w, revents);	1904	EV_CB_INVOKE ((W)w, revents);
1551	}	1905	}
1552		1906
1553	void inline_speed	1907	unsigned int
1554	call_pending (EV_P)	1908	ev_pending_count (EV_P)
		1909	{
		1910	int pri;
		1911	unsigned int count = 0;
		1912
		1913	for (pri = NUMPRI; pri--; )
		1914	count += pendingcnt [pri];
		1915
		1916	return count;
		1917	}
		1918
		1919	void noinline
		1920	ev_invoke_pending (EV_P)
1555	{	1921	{
1556	int pri;	1922	int pri;
1557		1923
1558	for (pri = NUMPRI; pri--; )	1924	for (pri = NUMPRI; pri--; )
1559	while (pendingcnt [pri])	1925	while (pendingcnt [pri])
1560	{	1926	{
1561	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1927	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1562		1928
1563	if (expect_true (p->w))
1564	{
1565	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1929	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1930	/* ^ this is no longer true, as pending_w could be here */
1566		1931
1567	p->w->pending = 0;	1932	p->w->pending = 0;
1568	EV_CB_INVOKE (p->w, p->events);	1933	EV_CB_INVOKE (p->w, p->events);
1569	}	1934	EV_FREQUENT_CHECK;
1570	}	1935	}
1571	}	1936	}
1572		1937
1573	#if EV_IDLE_ENABLE	1938	#if EV_IDLE_ENABLE
1574	void inline_size	1939	/* make idle watchers pending. this handles the "call-idle */
		1940	/* only when higher priorities are idle" logic */
		1941	inline_size void
1575	idle_reify (EV_P)	1942	idle_reify (EV_P)
1576	{	1943	{
1577	if (expect_false (idleall))	1944	if (expect_false (idleall))
1578	{	1945	{
1579	int pri;	1946	int pri;
…		…
1591	}	1958	}
1592	}	1959	}
1593	}	1960	}
1594	#endif	1961	#endif
1595		1962
1596	void inline_size	1963	/* make timers pending */
		1964	inline_size void
1597	timers_reify (EV_P)	1965	timers_reify (EV_P)
1598	{	1966	{
		1967	EV_FREQUENT_CHECK;
		1968
1599	while (timercnt && ANHE_at (timers [HEAP0]) <= mn_now)	1969	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1600	{	1970	{
1601	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	1971	do
1602
1603	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1604
1605	/* first reschedule or stop timer */
1606	if (w->repeat)
1607	{	1972	{
		1973	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1974
		1975	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1976
		1977	/* first reschedule or stop timer */
		1978	if (w->repeat)
		1979	{
		1980	ev_at (w) += w->repeat;
		1981	if (ev_at (w) < mn_now)
		1982	ev_at (w) = mn_now;
		1983
1608	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1984	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1609		1985
1610	ev_at (w) += w->repeat;	1986	ANHE_at_cache (timers [HEAP0]);
1611	if (ev_at (w) < mn_now)
1612	ev_at (w) = mn_now;
1613
1614	downheap (timers, timercnt, HEAP0);	1987	downheap (timers, timercnt, HEAP0);
		1988	}
		1989	else
		1990	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1991
		1992	EV_FREQUENT_CHECK;
		1993	feed_reverse (EV_A_ (W)w);
1615	}	1994	}
1616	else	1995	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1617	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1618		1996
1619	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1997	feed_reverse_done (EV_A_ EV_TIMEOUT);
1620	}	1998	}
1621	}	1999	}
1622		2000
1623	#if EV_PERIODIC_ENABLE	2001	#if EV_PERIODIC_ENABLE
1624	void inline_size	2002	/* make periodics pending */
		2003	inline_size void
1625	periodics_reify (EV_P)	2004	periodics_reify (EV_P)
1626	{	2005	{
		2006	EV_FREQUENT_CHECK;
		2007
1627	while (periodiccnt && ANHE_at (periodics [HEAP0]) <= ev_rt_now)	2008	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1628	{	2009	{
1629	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	2010	int feed_count = 0;
1630		2011
1631	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	2012	do
1632
1633	/* first reschedule or stop timer */
1634	if (w->reschedule_cb)
1635	{	2013	{
		2014	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2015
		2016	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2017
		2018	/* first reschedule or stop timer */
		2019	if (w->reschedule_cb)
		2020	{
1636	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);	2021	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2022
1637	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));	2023	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		2024
		2025	ANHE_at_cache (periodics [HEAP0]);
1638	downheap (periodics, periodiccnt, 1);	2026	downheap (periodics, periodiccnt, HEAP0);
		2027	}
		2028	else if (w->interval)
		2029	{
		2030	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2031	/* if next trigger time is not sufficiently in the future, put it there */
		2032	/* this might happen because of floating point inexactness */
		2033	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2034	{
		2035	ev_at (w) += w->interval;
		2036
		2037	/* if interval is unreasonably low we might still have a time in the past */
		2038	/* so correct this. this will make the periodic very inexact, but the user */
		2039	/* has effectively asked to get triggered more often than possible */
		2040	if (ev_at (w) < ev_rt_now)
		2041	ev_at (w) = ev_rt_now;
		2042	}
		2043
		2044	ANHE_at_cache (periodics [HEAP0]);
		2045	downheap (periodics, periodiccnt, HEAP0);
		2046	}
		2047	else
		2048	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2049
		2050	EV_FREQUENT_CHECK;
		2051	feed_reverse (EV_A_ (W)w);
1639	}	2052	}
1640	else if (w->interval)	2053	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1641	{
1642	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1643	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1644	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1645	downheap (periodics, periodiccnt, HEAP0);
1646	}
1647	else
1648	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1649		2054
1650	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	2055	feed_reverse_done (EV_A_ EV_PERIODIC);
1651	}	2056	}
1652	}	2057	}
1653		2058
		2059	/* simply recalculate all periodics */
		2060	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1654	static void noinline	2061	static void noinline
1655	periodics_reschedule (EV_P)	2062	periodics_reschedule (EV_P)
1656	{	2063	{
1657	int i;	2064	int i;
1658		2065
…		…
1663		2070
1664	if (w->reschedule_cb)	2071	if (w->reschedule_cb)
1665	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2072	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1666	else if (w->interval)	2073	else if (w->interval)
1667	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2074	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2075
		2076	ANHE_at_cache (periodics [i]);
		2077	}
		2078
		2079	reheap (periodics, periodiccnt);
		2080	}
		2081	#endif
		2082
		2083	/* adjust all timers by a given offset */
		2084	static void noinline
		2085	timers_reschedule (EV_P_ ev_tstamp adjust)
		2086	{
		2087	int i;
		2088
		2089	for (i = 0; i < timercnt; ++i)
1668	}	2090	{
1669		2091	ANHE *he = timers + i + HEAP0;
1670	/* now rebuild the heap, this for the 2-heap, inefficient for the 4-heap, but correct */	2092	ANHE_w (*he)->at += adjust;
1671	for (i = periodiccnt >> 1; --i; )	2093	ANHE_at_cache (*he);
1672	downheap (periodics, periodiccnt, i + HEAP0);	2094	}
1673	}	2095	}
1674	#endif
1675		2096
1676	void inline_speed	2097	/* fetch new monotonic and realtime times from the kernel */
		2098	/* also detetc if there was a timejump, and act accordingly */
		2099	inline_speed void
1677	time_update (EV_P_ ev_tstamp max_block)	2100	time_update (EV_P_ ev_tstamp max_block)
1678	{	2101	{
1679	int i;
1680
1681	#if EV_USE_MONOTONIC	2102	#if EV_USE_MONOTONIC
1682	if (expect_true (have_monotonic))	2103	if (expect_true (have_monotonic))
1683	{	2104	{
		2105	int i;
1684	ev_tstamp odiff = rtmn_diff;	2106	ev_tstamp odiff = rtmn_diff;
1685		2107
1686	mn_now = get_clock ();	2108	mn_now = get_clock ();
1687		2109
1688	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2110	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1714	ev_rt_now = ev_time ();	2136	ev_rt_now = ev_time ();
1715	mn_now = get_clock ();	2137	mn_now = get_clock ();
1716	now_floor = mn_now;	2138	now_floor = mn_now;
1717	}	2139	}
1718		2140
		2141	/* no timer adjustment, as the monotonic clock doesn't jump */
		2142	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1719	# if EV_PERIODIC_ENABLE	2143	# if EV_PERIODIC_ENABLE
1720	periodics_reschedule (EV_A);	2144	periodics_reschedule (EV_A);
1721	# endif	2145	# endif
1722	/* no timer adjustment, as the monotonic clock doesn't jump */
1723	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1724	}	2146	}
1725	else	2147	else
1726	#endif	2148	#endif
1727	{	2149	{
1728	ev_rt_now = ev_time ();	2150	ev_rt_now = ev_time ();
1729		2151
1730	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2152	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1731	{	2153	{
		2154	/* adjust timers. this is easy, as the offset is the same for all of them */
		2155	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1732	#if EV_PERIODIC_ENABLE	2156	#if EV_PERIODIC_ENABLE
1733	periodics_reschedule (EV_A);	2157	periodics_reschedule (EV_A);
1734	#endif	2158	#endif
1735	/* adjust timers. this is easy, as the offset is the same for all of them */
1736	for (i = 0; i < timercnt; ++i)
1737	{
1738	ANHE *he = timers + i + HEAP0;
1739	ANHE_w (*he)->at += ev_rt_now - mn_now;
1740	ANHE_at_set (*he);
1741	}
1742	}	2159	}
1743		2160
1744	mn_now = ev_rt_now;	2161	mn_now = ev_rt_now;
1745	}	2162	}
1746	}	2163	}
1747		2164
1748	void	2165	void
1749	ev_ref (EV_P)
1750	{
1751	++activecnt;
1752	}
1753
1754	void
1755	ev_unref (EV_P)
1756	{
1757	--activecnt;
1758	}
1759
1760	static int loop_done;
1761
1762	void
1763	ev_loop (EV_P_ int flags)	2166	ev_loop (EV_P_ int flags)
1764	{	2167	{
		2168	#if EV_MINIMAL < 2
		2169	++loop_depth;
		2170	#endif
		2171
		2172	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2173
1765	loop_done = EVUNLOOP_CANCEL;	2174	loop_done = EVUNLOOP_CANCEL;
1766		2175
1767	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2176	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1768		2177
1769	do	2178	do
1770	{	2179	{
		2180	#if EV_VERIFY >= 2
		2181	ev_loop_verify (EV_A);
		2182	#endif
		2183
1771	#ifndef _WIN32	2184	#ifndef _WIN32
1772	if (expect_false (curpid)) /* penalise the forking check even more */	2185	if (expect_false (curpid)) /* penalise the forking check even more */
1773	if (expect_false (getpid () != curpid))	2186	if (expect_false (getpid () != curpid))
1774	{	2187	{
1775	curpid = getpid ();	2188	curpid = getpid ();
…		…
1781	/* we might have forked, so queue fork handlers */	2194	/* we might have forked, so queue fork handlers */
1782	if (expect_false (postfork))	2195	if (expect_false (postfork))
1783	if (forkcnt)	2196	if (forkcnt)
1784	{	2197	{
1785	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2198	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1786	call_pending (EV_A);	2199	EV_INVOKE_PENDING;
1787	}	2200	}
1788	#endif	2201	#endif
1789		2202
1790	/* queue prepare watchers (and execute them) */	2203	/* queue prepare watchers (and execute them) */
1791	if (expect_false (preparecnt))	2204	if (expect_false (preparecnt))
1792	{	2205	{
1793	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2206	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1794	call_pending (EV_A);	2207	EV_INVOKE_PENDING;
1795	}	2208	}
1796		2209
1797	if (expect_false (!activecnt))	2210	if (expect_false (loop_done))
1798	break;	2211	break;
1799		2212
1800	/* we might have forked, so reify kernel state if necessary */	2213	/* we might have forked, so reify kernel state if necessary */
1801	if (expect_false (postfork))	2214	if (expect_false (postfork))
1802	loop_fork (EV_A);	2215	loop_fork (EV_A);
…		…
1809	ev_tstamp waittime = 0.;	2222	ev_tstamp waittime = 0.;
1810	ev_tstamp sleeptime = 0.;	2223	ev_tstamp sleeptime = 0.;
1811		2224
1812	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2225	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1813	{	2226	{
		2227	/* remember old timestamp for io_blocktime calculation */
		2228	ev_tstamp prev_mn_now = mn_now;
		2229
1814	/* update time to cancel out callback processing overhead */	2230	/* update time to cancel out callback processing overhead */
1815	time_update (EV_A_ 1e100);	2231	time_update (EV_A_ 1e100);
1816		2232
1817	waittime = MAX_BLOCKTIME;	2233	waittime = MAX_BLOCKTIME;
1818		2234
…		…
1828	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2244	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1829	if (waittime > to) waittime = to;	2245	if (waittime > to) waittime = to;
1830	}	2246	}
1831	#endif	2247	#endif
1832		2248
		2249	/* don't let timeouts decrease the waittime below timeout_blocktime */
1833	if (expect_false (waittime < timeout_blocktime))	2250	if (expect_false (waittime < timeout_blocktime))
1834	waittime = timeout_blocktime;	2251	waittime = timeout_blocktime;
1835		2252
1836	sleeptime = waittime - backend_fudge;	2253	/* extra check because io_blocktime is commonly 0 */
1837
1838	if (expect_true (sleeptime > io_blocktime))	2254	if (expect_false (io_blocktime))
1839	sleeptime = io_blocktime;
1840
1841	if (sleeptime)
1842	{	2255	{
		2256	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2257
		2258	if (sleeptime > waittime - backend_fudge)
		2259	sleeptime = waittime - backend_fudge;
		2260
		2261	if (expect_true (sleeptime > 0.))
		2262	{
1843	ev_sleep (sleeptime);	2263	ev_sleep (sleeptime);
1844	waittime -= sleeptime;	2264	waittime -= sleeptime;
		2265	}
1845	}	2266	}
1846	}	2267	}
1847		2268
		2269	#if EV_MINIMAL < 2
1848	++loop_count;	2270	++loop_count;
		2271	#endif
		2272	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1849	backend_poll (EV_A_ waittime);	2273	backend_poll (EV_A_ waittime);
		2274	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1850		2275
1851	/* update ev_rt_now, do magic */	2276	/* update ev_rt_now, do magic */
1852	time_update (EV_A_ waittime + sleeptime);	2277	time_update (EV_A_ waittime + sleeptime);
1853	}	2278	}
1854		2279
…		…
1865		2290
1866	/* queue check watchers, to be executed first */	2291	/* queue check watchers, to be executed first */
1867	if (expect_false (checkcnt))	2292	if (expect_false (checkcnt))
1868	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2293	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1869		2294
1870	call_pending (EV_A);	2295	EV_INVOKE_PENDING;
1871	}	2296	}
1872	while (expect_true (	2297	while (expect_true (
1873	activecnt	2298	activecnt
1874	&& !loop_done	2299	&& !loop_done
1875	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2300	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1876	));	2301	));
1877		2302
1878	if (loop_done == EVUNLOOP_ONE)	2303	if (loop_done == EVUNLOOP_ONE)
1879	loop_done = EVUNLOOP_CANCEL;	2304	loop_done = EVUNLOOP_CANCEL;
		2305
		2306	#if EV_MINIMAL < 2
		2307	--loop_depth;
		2308	#endif
1880	}	2309	}
1881		2310
1882	void	2311	void
1883	ev_unloop (EV_P_ int how)	2312	ev_unloop (EV_P_ int how)
1884	{	2313	{
1885	loop_done = how;	2314	loop_done = how;
1886	}	2315	}
1887		2316
		2317	void
		2318	ev_ref (EV_P)
		2319	{
		2320	++activecnt;
		2321	}
		2322
		2323	void
		2324	ev_unref (EV_P)
		2325	{
		2326	--activecnt;
		2327	}
		2328
		2329	void
		2330	ev_now_update (EV_P)
		2331	{
		2332	time_update (EV_A_ 1e100);
		2333	}
		2334
		2335	void
		2336	ev_suspend (EV_P)
		2337	{
		2338	ev_now_update (EV_A);
		2339	}
		2340
		2341	void
		2342	ev_resume (EV_P)
		2343	{
		2344	ev_tstamp mn_prev = mn_now;
		2345
		2346	ev_now_update (EV_A);
		2347	timers_reschedule (EV_A_ mn_now - mn_prev);
		2348	#if EV_PERIODIC_ENABLE
		2349	/* TODO: really do this? */
		2350	periodics_reschedule (EV_A);
		2351	#endif
		2352	}
		2353
1888	/*****************************************************************************/	2354	/*****************************************************************************/
		2355	/* singly-linked list management, used when the expected list length is short */
1889		2356
1890	void inline_size	2357	inline_size void
1891	wlist_add (WL *head, WL elem)	2358	wlist_add (WL *head, WL elem)
1892	{	2359	{
1893	elem->next = *head;	2360	elem->next = *head;
1894	*head = elem;	2361	*head = elem;
1895	}	2362	}
1896		2363
1897	void inline_size	2364	inline_size void
1898	wlist_del (WL *head, WL elem)	2365	wlist_del (WL *head, WL elem)
1899	{	2366	{
1900	while (*head)	2367	while (*head)
1901	{	2368	{
1902	if (*head == elem)	2369	if (*head == elem)
…		…
1907		2374
1908	head = &(*head)->next;	2375	head = &(*head)->next;
1909	}	2376	}
1910	}	2377	}
1911		2378
1912	void inline_speed	2379	/* internal, faster, version of ev_clear_pending */
		2380	inline_speed void
1913	clear_pending (EV_P_ W w)	2381	clear_pending (EV_P_ W w)
1914	{	2382	{
1915	if (w->pending)	2383	if (w->pending)
1916	{	2384	{
1917	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2385	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1918	w->pending = 0;	2386	w->pending = 0;
1919	}	2387	}
1920	}	2388	}
1921		2389
1922	int	2390	int
…		…
1926	int pending = w_->pending;	2394	int pending = w_->pending;
1927		2395
1928	if (expect_true (pending))	2396	if (expect_true (pending))
1929	{	2397	{
1930	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2398	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2399	p->w = (W)&pending_w;
1931	w_->pending = 0;	2400	w_->pending = 0;
1932	p->w = 0;
1933	return p->events;	2401	return p->events;
1934	}	2402	}
1935	else	2403	else
1936	return 0;	2404	return 0;
1937	}	2405	}
1938		2406
1939	void inline_size	2407	inline_size void
1940	pri_adjust (EV_P_ W w)	2408	pri_adjust (EV_P_ W w)
1941	{	2409	{
1942	int pri = w->priority;	2410	int pri = ev_priority (w);
1943	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2411	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1944	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2412	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1945	w->priority = pri;	2413	ev_set_priority (w, pri);
1946	}	2414	}
1947		2415
1948	void inline_speed	2416	inline_speed void
1949	ev_start (EV_P_ W w, int active)	2417	ev_start (EV_P_ W w, int active)
1950	{	2418	{
1951	pri_adjust (EV_A_ w);	2419	pri_adjust (EV_A_ w);
1952	w->active = active;	2420	w->active = active;
1953	ev_ref (EV_A);	2421	ev_ref (EV_A);
1954	}	2422	}
1955		2423
1956	void inline_size	2424	inline_size void
1957	ev_stop (EV_P_ W w)	2425	ev_stop (EV_P_ W w)
1958	{	2426	{
1959	ev_unref (EV_A);	2427	ev_unref (EV_A);
1960	w->active = 0;	2428	w->active = 0;
1961	}	2429	}
…		…
1968	int fd = w->fd;	2436	int fd = w->fd;
1969		2437
1970	if (expect_false (ev_is_active (w)))	2438	if (expect_false (ev_is_active (w)))
1971	return;	2439	return;
1972		2440
1973	assert (("ev_io_start called with negative fd", fd >= 0));	2441	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2442	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2443
		2444	EV_FREQUENT_CHECK;
1974		2445
1975	ev_start (EV_A_ (W)w, 1);	2446	ev_start (EV_A_ (W)w, 1);
1976	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2447	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1977	wlist_add (&anfds[fd].head, (WL)w);	2448	wlist_add (&anfds[fd].head, (WL)w);
1978		2449
1979	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2450	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1980	w->events &= ~EV_IOFDSET;	2451	w->events &= ~EV__IOFDSET;
		2452
		2453	EV_FREQUENT_CHECK;
1981	}	2454	}
1982		2455
1983	void noinline	2456	void noinline
1984	ev_io_stop (EV_P_ ev_io *w)	2457	ev_io_stop (EV_P_ ev_io *w)
1985	{	2458	{
1986	clear_pending (EV_A_ (W)w);	2459	clear_pending (EV_A_ (W)w);
1987	if (expect_false (!ev_is_active (w)))	2460	if (expect_false (!ev_is_active (w)))
1988	return;	2461	return;
1989		2462
1990	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2463	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2464
		2465	EV_FREQUENT_CHECK;
1991		2466
1992	wlist_del (&anfds[w->fd].head, (WL)w);	2467	wlist_del (&anfds[w->fd].head, (WL)w);
1993	ev_stop (EV_A_ (W)w);	2468	ev_stop (EV_A_ (W)w);
1994		2469
1995	fd_change (EV_A_ w->fd, 1);	2470	fd_change (EV_A_ w->fd, 1);
		2471
		2472	EV_FREQUENT_CHECK;
1996	}	2473	}
1997		2474
1998	void noinline	2475	void noinline
1999	ev_timer_start (EV_P_ ev_timer *w)	2476	ev_timer_start (EV_P_ ev_timer *w)
2000	{	2477	{
2001	if (expect_false (ev_is_active (w)))	2478	if (expect_false (ev_is_active (w)))
2002	return;	2479	return;
2003		2480
2004	ev_at (w) += mn_now;	2481	ev_at (w) += mn_now;
2005		2482
2006	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2483	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2007		2484
		2485	EV_FREQUENT_CHECK;
		2486
		2487	++timercnt;
2008	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);	2488	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2009	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);	2489	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2010	ANHE_w (timers [ev_active (w)]) = (WT)w;	2490	ANHE_w (timers [ev_active (w)]) = (WT)w;
2011	ANHE_at_set (timers [ev_active (w)]);	2491	ANHE_at_cache (timers [ev_active (w)]);
2012	upheap (timers, ev_active (w));	2492	upheap (timers, ev_active (w));
2013		2493
		2494	EV_FREQUENT_CHECK;
		2495
2014	/*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/	2496	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2015	}	2497	}
2016		2498
2017	void noinline	2499	void noinline
2018	ev_timer_stop (EV_P_ ev_timer *w)	2500	ev_timer_stop (EV_P_ ev_timer *w)
2019	{	2501	{
2020	clear_pending (EV_A_ (W)w);	2502	clear_pending (EV_A_ (W)w);
2021	if (expect_false (!ev_is_active (w)))	2503	if (expect_false (!ev_is_active (w)))
2022	return;	2504	return;
2023		2505
		2506	EV_FREQUENT_CHECK;
		2507
2024	{	2508	{
2025	int active = ev_active (w);	2509	int active = ev_active (w);
2026		2510
2027	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2511	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2028		2512
		2513	--timercnt;
		2514
2029	if (expect_true (active < timercnt + HEAP0 - 1))	2515	if (expect_true (active < timercnt + HEAP0))
2030	{	2516	{
2031	timers [active] = timers [timercnt + HEAP0 - 1];	2517	timers [active] = timers [timercnt + HEAP0];
2032	adjustheap (timers, timercnt, active);	2518	adjustheap (timers, timercnt, active);
2033	}	2519	}
2034
2035	--timercnt;
2036	}	2520	}
		2521
		2522	EV_FREQUENT_CHECK;
2037		2523
2038	ev_at (w) -= mn_now;	2524	ev_at (w) -= mn_now;
2039		2525
2040	ev_stop (EV_A_ (W)w);	2526	ev_stop (EV_A_ (W)w);
2041	}	2527	}
2042		2528
2043	void noinline	2529	void noinline
2044	ev_timer_again (EV_P_ ev_timer *w)	2530	ev_timer_again (EV_P_ ev_timer *w)
2045	{	2531	{
		2532	EV_FREQUENT_CHECK;
		2533
2046	if (ev_is_active (w))	2534	if (ev_is_active (w))
2047	{	2535	{
2048	if (w->repeat)	2536	if (w->repeat)
2049	{	2537	{
2050	ev_at (w) = mn_now + w->repeat;	2538	ev_at (w) = mn_now + w->repeat;
2051	ANHE_at_set (timers [ev_active (w)]);	2539	ANHE_at_cache (timers [ev_active (w)]);
2052	adjustheap (timers, timercnt, ev_active (w));	2540	adjustheap (timers, timercnt, ev_active (w));
2053	}	2541	}
2054	else	2542	else
2055	ev_timer_stop (EV_A_ w);	2543	ev_timer_stop (EV_A_ w);
2056	}	2544	}
2057	else if (w->repeat)	2545	else if (w->repeat)
2058	{	2546	{
2059	ev_at (w) = w->repeat;	2547	ev_at (w) = w->repeat;
2060	ev_timer_start (EV_A_ w);	2548	ev_timer_start (EV_A_ w);
2061	}	2549	}
		2550
		2551	EV_FREQUENT_CHECK;
		2552	}
		2553
		2554	ev_tstamp
		2555	ev_timer_remaining (EV_P_ ev_timer *w)
		2556	{
		2557	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2062	}	2558	}
2063		2559
2064	#if EV_PERIODIC_ENABLE	2560	#if EV_PERIODIC_ENABLE
2065	void noinline	2561	void noinline
2066	ev_periodic_start (EV_P_ ev_periodic *w)	2562	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
2070		2566
2071	if (w->reschedule_cb)	2567	if (w->reschedule_cb)
2072	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2568	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2073	else if (w->interval)	2569	else if (w->interval)
2074	{	2570	{
2075	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2571	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2076	/* this formula differs from the one in periodic_reify because we do not always round up */	2572	/* this formula differs from the one in periodic_reify because we do not always round up */
2077	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2573	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2078	}	2574	}
2079	else	2575	else
2080	ev_at (w) = w->offset;	2576	ev_at (w) = w->offset;
2081		2577
		2578	EV_FREQUENT_CHECK;
		2579
		2580	++periodiccnt;
2082	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);	2581	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2083	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);	2582	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2084	ANHE_w (periodics [ev_active (w)]) = (WT)w;	2583	ANHE_w (periodics [ev_active (w)]) = (WT)w;
		2584	ANHE_at_cache (periodics [ev_active (w)]);
2085	upheap (periodics, ev_active (w));	2585	upheap (periodics, ev_active (w));
2086		2586
		2587	EV_FREQUENT_CHECK;
		2588
2087	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2589	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2088	}	2590	}
2089		2591
2090	void noinline	2592	void noinline
2091	ev_periodic_stop (EV_P_ ev_periodic *w)	2593	ev_periodic_stop (EV_P_ ev_periodic *w)
2092	{	2594	{
2093	clear_pending (EV_A_ (W)w);	2595	clear_pending (EV_A_ (W)w);
2094	if (expect_false (!ev_is_active (w)))	2596	if (expect_false (!ev_is_active (w)))
2095	return;	2597	return;
2096		2598
		2599	EV_FREQUENT_CHECK;
		2600
2097	{	2601	{
2098	int active = ev_active (w);	2602	int active = ev_active (w);
2099		2603
2100	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2604	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2101		2605
		2606	--periodiccnt;
		2607
2102	if (expect_true (active < periodiccnt + HEAP0 - 1))	2608	if (expect_true (active < periodiccnt + HEAP0))
2103	{	2609	{
2104	periodics [active] = periodics [periodiccnt + HEAP0 - 1];	2610	periodics [active] = periodics [periodiccnt + HEAP0];
2105	adjustheap (periodics, periodiccnt, active);	2611	adjustheap (periodics, periodiccnt, active);
2106	}	2612	}
2107
2108	--periodiccnt;
2109	}	2613	}
		2614
		2615	EV_FREQUENT_CHECK;
2110		2616
2111	ev_stop (EV_A_ (W)w);	2617	ev_stop (EV_A_ (W)w);
2112	}	2618	}
2113		2619
2114	void noinline	2620	void noinline
…		…
2126		2632
2127	void noinline	2633	void noinline
2128	ev_signal_start (EV_P_ ev_signal *w)	2634	ev_signal_start (EV_P_ ev_signal *w)
2129	{	2635	{
2130	#if EV_MULTIPLICITY	2636	#if EV_MULTIPLICITY
2131	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2637	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2132	#endif	2638	#endif
2133	if (expect_false (ev_is_active (w)))	2639	if (expect_false (ev_is_active (w)))
2134	return;	2640	return;
2135		2641
2136	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2642	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2137		2643
		2644	EV_FREQUENT_CHECK;
		2645
		2646	#if EV_USE_SIGNALFD
		2647	if (sigfd == -2)
		2648	{
		2649	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
		2650	if (sigfd < 0 && errno == EINVAL)
		2651	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
		2652
		2653	if (sigfd >= 0)
		2654	{
		2655	fd_intern (sigfd); /* doing it twice will not hurt */
		2656
		2657	sigemptyset (&sigfd_set);
		2658
		2659	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2660	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2661	ev_io_start (EV_A_ &sigfd_w);
		2662	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2663	}
		2664	}
		2665
		2666	if (sigfd >= 0)
		2667	{
		2668	/* TODO: check .head */
		2669	sigaddset (&sigfd_set, w->signum);
		2670	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2671
		2672	signalfd (sigfd, &sigfd_set, 0);
		2673	}
		2674	else
		2675	#endif
2138	evpipe_init (EV_A);	2676	evpipe_init (EV_A);
2139		2677
2140	{	2678	{
2141	#ifndef _WIN32	2679	#ifndef _WIN32
2142	sigset_t full, prev;	2680	sigset_t full, prev;
2143	sigfillset (&full);	2681	sigfillset (&full);
2144	sigprocmask (SIG_SETMASK, &full, &prev);	2682	sigprocmask (SIG_SETMASK, &full, &prev);
2145	#endif	2683	#endif
2146		2684
2147	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2685	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2148		2686
2149	#ifndef _WIN32	2687	#ifndef _WIN32
		2688	if (sigfd < 0)/*TODO*/
		2689	sigdelset (&prev, w->signum);
2150	sigprocmask (SIG_SETMASK, &prev, 0);	2690	sigprocmask (SIG_SETMASK, &prev, 0);
2151	#endif	2691	#endif
2152	}	2692	}
2153		2693
2154	ev_start (EV_A_ (W)w, 1);	2694	ev_start (EV_A_ (W)w, 1);
…		…
2157	if (!((WL)w)->next)	2697	if (!((WL)w)->next)
2158	{	2698	{
2159	#if _WIN32	2699	#if _WIN32
2160	signal (w->signum, ev_sighandler);	2700	signal (w->signum, ev_sighandler);
2161	#else	2701	#else
		2702	if (sigfd < 0) /*TODO*/
		2703	{
2162	struct sigaction sa;	2704	struct sigaction sa = { };
2163	sa.sa_handler = ev_sighandler;	2705	sa.sa_handler = ev_sighandler;
2164	sigfillset (&sa.sa_mask);	2706	sigfillset (&sa.sa_mask);
2165	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2707	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2166	sigaction (w->signum, &sa, 0);	2708	sigaction (w->signum, &sa, 0);
		2709	}
2167	#endif	2710	#endif
2168	}	2711	}
		2712
		2713	EV_FREQUENT_CHECK;
2169	}	2714	}
2170		2715
2171	void noinline	2716	void noinline
2172	ev_signal_stop (EV_P_ ev_signal *w)	2717	ev_signal_stop (EV_P_ ev_signal *w)
2173	{	2718	{
2174	clear_pending (EV_A_ (W)w);	2719	clear_pending (EV_A_ (W)w);
2175	if (expect_false (!ev_is_active (w)))	2720	if (expect_false (!ev_is_active (w)))
2176	return;	2721	return;
2177		2722
		2723	EV_FREQUENT_CHECK;
		2724
2178	wlist_del (&signals [w->signum - 1].head, (WL)w);	2725	wlist_del (&signals [w->signum - 1].head, (WL)w);
2179	ev_stop (EV_A_ (W)w);	2726	ev_stop (EV_A_ (W)w);
2180		2727
2181	if (!signals [w->signum - 1].head)	2728	if (!signals [w->signum - 1].head)
		2729	#if EV_USE_SIGNALFD
		2730	if (sigfd >= 0)
		2731	{
		2732	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2733	sigdelset (&sigfd_set, w->signum);
		2734	signalfd (sigfd, &sigfd_set, 0);
		2735	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2736	/*TODO: maybe unblock signal? */
		2737	}
		2738	else
		2739	#endif
2182	signal (w->signum, SIG_DFL);	2740	signal (w->signum, SIG_DFL);
		2741
		2742	EV_FREQUENT_CHECK;
2183	}	2743	}
2184		2744
2185	void	2745	void
2186	ev_child_start (EV_P_ ev_child *w)	2746	ev_child_start (EV_P_ ev_child *w)
2187	{	2747	{
2188	#if EV_MULTIPLICITY	2748	#if EV_MULTIPLICITY
2189	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2749	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2190	#endif	2750	#endif
2191	if (expect_false (ev_is_active (w)))	2751	if (expect_false (ev_is_active (w)))
2192	return;	2752	return;
2193		2753
		2754	EV_FREQUENT_CHECK;
		2755
2194	ev_start (EV_A_ (W)w, 1);	2756	ev_start (EV_A_ (W)w, 1);
2195	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2757	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2758
		2759	EV_FREQUENT_CHECK;
2196	}	2760	}
2197		2761
2198	void	2762	void
2199	ev_child_stop (EV_P_ ev_child *w)	2763	ev_child_stop (EV_P_ ev_child *w)
2200	{	2764	{
2201	clear_pending (EV_A_ (W)w);	2765	clear_pending (EV_A_ (W)w);
2202	if (expect_false (!ev_is_active (w)))	2766	if (expect_false (!ev_is_active (w)))
2203	return;	2767	return;
2204		2768
		2769	EV_FREQUENT_CHECK;
		2770
2205	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2771	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2206	ev_stop (EV_A_ (W)w);	2772	ev_stop (EV_A_ (W)w);
		2773
		2774	EV_FREQUENT_CHECK;
2207	}	2775	}
2208		2776
2209	#if EV_STAT_ENABLE	2777	#if EV_STAT_ENABLE
2210		2778
2211	# ifdef _WIN32	2779	# ifdef _WIN32
2212	# undef lstat	2780	# undef lstat
2213	# define lstat(a,b) _stati64 (a,b)	2781	# define lstat(a,b) _stati64 (a,b)
2214	# endif	2782	# endif
2215		2783
2216	#define DEF_STAT_INTERVAL 5.0074891	2784	#define DEF_STAT_INTERVAL 5.0074891
		2785	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2217	#define MIN_STAT_INTERVAL 0.1074891	2786	#define MIN_STAT_INTERVAL 0.1074891
2218		2787
2219	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2788	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2220		2789
2221	#if EV_USE_INOTIFY	2790	#if EV_USE_INOTIFY
2222	# define EV_INOTIFY_BUFSIZE 8192	2791	# define EV_INOTIFY_BUFSIZE 8192
…		…
2226	{	2795	{
2227	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);	2796	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);
2228		2797
2229	if (w->wd < 0)	2798	if (w->wd < 0)
2230	{	2799	{
		2800	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2231	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2801	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2232		2802
2233	/* monitor some parent directory for speedup hints */	2803	/* monitor some parent directory for speedup hints */
2234	/* note that exceeding the hardcoded limit is not a correctness issue, */	2804	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2235	/* but an efficiency issue only */	2805	/* but an efficiency issue only */
2236	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2806	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2237	{	2807	{
2238	char path [4096];	2808	char path [4096];
2239	strcpy (path, w->path);	2809	strcpy (path, w->path);
…		…
2243	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2813	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2244	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2814	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2245		2815
2246	char *pend = strrchr (path, '/');	2816	char *pend = strrchr (path, '/');
2247		2817
2248	if (!pend)	2818	if (!pend || pend == path)
2249	break; /* whoops, no '/', complain to your admin */	2819	break;
2250		2820
2251	*pend = 0;	2821	*pend = 0;
2252	w->wd = inotify_add_watch (fs_fd, path, mask);	2822	w->wd = inotify_add_watch (fs_fd, path, mask);
2253	}	2823	}
2254	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2824	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2255	}	2825	}
2256	}	2826	}
2257	else
2258	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2259		2827
2260	if (w->wd >= 0)	2828	if (w->wd >= 0)
		2829	{
2261	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2830	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2831
		2832	/* now local changes will be tracked by inotify, but remote changes won't */
		2833	/* unless the filesystem it known to be local, we therefore still poll */
		2834	/* also do poll on <2.6.25, but with normal frequency */
		2835	struct statfs sfs;
		2836
		2837	if (fs_2625 && !statfs (w->path, &sfs))
		2838	if (sfs.f_type == 0x1373 /* devfs */
		2839	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2840	|| sfs.f_type == 0x3153464a /* jfs */
		2841	|| sfs.f_type == 0x52654973 /* reiser3 */
		2842	|| sfs.f_type == 0x01021994 /* tempfs */
		2843	|| sfs.f_type == 0x58465342 /* xfs */)
		2844	return;
		2845
		2846	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2847	ev_timer_again (EV_A_ &w->timer);
		2848	}
2262	}	2849	}
2263		2850
2264	static void noinline	2851	static void noinline
2265	infy_del (EV_P_ ev_stat *w)	2852	infy_del (EV_P_ ev_stat *w)
2266	{	2853	{
…		…
2280		2867
2281	static void noinline	2868	static void noinline
2282	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2869	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2283	{	2870	{
2284	if (slot < 0)	2871	if (slot < 0)
2285	/* overflow, need to check for all hahs slots */	2872	/* overflow, need to check for all hash slots */
2286	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2873	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2287	infy_wd (EV_A_ slot, wd, ev);	2874	infy_wd (EV_A_ slot, wd, ev);
2288	else	2875	else
2289	{	2876	{
2290	WL w_;	2877	WL w_;
…		…
2296		2883
2297	if (w->wd == wd || wd == -1)	2884	if (w->wd == wd || wd == -1)
2298	{	2885	{
2299	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2886	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2300	{	2887	{
		2888	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2301	w->wd = -1;	2889	w->wd = -1;
2302	infy_add (EV_A_ w); /* re-add, no matter what */	2890	infy_add (EV_A_ w); /* re-add, no matter what */
2303	}	2891	}
2304		2892
2305	stat_timer_cb (EV_A_ &w->timer, 0);	2893	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2318		2906
2319	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2907	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2320	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2908	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2321	}	2909	}
2322		2910
2323	void inline_size	2911	inline_size void
		2912	check_2625 (EV_P)
		2913	{
		2914	/* kernels < 2.6.25 are borked
		2915	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2916	*/
		2917	struct utsname buf;
		2918	int major, minor, micro;
		2919
		2920	if (uname (&buf))
		2921	return;
		2922
		2923	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2924	return;
		2925
		2926	if (major < 2
		2927	|| (major == 2 && minor < 6)
		2928	|| (major == 2 && minor == 6 && micro < 25))
		2929	return;
		2930
		2931	fs_2625 = 1;
		2932	}
		2933
		2934	inline_size void
2324	infy_init (EV_P)	2935	infy_init (EV_P)
2325	{	2936	{
2326	if (fs_fd != -2)	2937	if (fs_fd != -2)
2327	return;	2938	return;
		2939
		2940	fs_fd = -1;
		2941
		2942	check_2625 (EV_A);
2328		2943
2329	fs_fd = inotify_init ();	2944	fs_fd = inotify_init ();
2330		2945
2331	if (fs_fd >= 0)	2946	if (fs_fd >= 0)
2332	{	2947	{
…		…
2334	ev_set_priority (&fs_w, EV_MAXPRI);	2949	ev_set_priority (&fs_w, EV_MAXPRI);
2335	ev_io_start (EV_A_ &fs_w);	2950	ev_io_start (EV_A_ &fs_w);
2336	}	2951	}
2337	}	2952	}
2338		2953
2339	void inline_size	2954	inline_size void
2340	infy_fork (EV_P)	2955	infy_fork (EV_P)
2341	{	2956	{
2342	int slot;	2957	int slot;
2343		2958
2344	if (fs_fd < 0)	2959	if (fs_fd < 0)
…		…
2360	w->wd = -1;	2975	w->wd = -1;
2361		2976
2362	if (fs_fd >= 0)	2977	if (fs_fd >= 0)
2363	infy_add (EV_A_ w); /* re-add, no matter what */	2978	infy_add (EV_A_ w); /* re-add, no matter what */
2364	else	2979	else
2365	ev_timer_start (EV_A_ &w->timer);	2980	ev_timer_again (EV_A_ &w->timer);
2366	}	2981	}
2367
2368	}	2982	}
2369	}	2983	}
2370		2984
		2985	#endif
		2986
		2987	#ifdef _WIN32
		2988	# define EV_LSTAT(p,b) _stati64 (p, b)
		2989	#else
		2990	# define EV_LSTAT(p,b) lstat (p, b)
2371	#endif	2991	#endif
2372		2992
2373	void	2993	void
2374	ev_stat_stat (EV_P_ ev_stat *w)	2994	ev_stat_stat (EV_P_ ev_stat *w)
2375	{	2995	{
…		…
2402	|| w->prev.st_atime != w->attr.st_atime	3022	|| w->prev.st_atime != w->attr.st_atime
2403	|| w->prev.st_mtime != w->attr.st_mtime	3023	|| w->prev.st_mtime != w->attr.st_mtime
2404	|| w->prev.st_ctime != w->attr.st_ctime	3024	|| w->prev.st_ctime != w->attr.st_ctime
2405	) {	3025	) {
2406	#if EV_USE_INOTIFY	3026	#if EV_USE_INOTIFY
		3027	if (fs_fd >= 0)
		3028	{
2407	infy_del (EV_A_ w);	3029	infy_del (EV_A_ w);
2408	infy_add (EV_A_ w);	3030	infy_add (EV_A_ w);
2409	ev_stat_stat (EV_A_ w); /* avoid race... */	3031	ev_stat_stat (EV_A_ w); /* avoid race... */
		3032	}
2410	#endif	3033	#endif
2411		3034
2412	ev_feed_event (EV_A_ w, EV_STAT);	3035	ev_feed_event (EV_A_ w, EV_STAT);
2413	}	3036	}
2414	}	3037	}
…		…
2417	ev_stat_start (EV_P_ ev_stat *w)	3040	ev_stat_start (EV_P_ ev_stat *w)
2418	{	3041	{
2419	if (expect_false (ev_is_active (w)))	3042	if (expect_false (ev_is_active (w)))
2420	return;	3043	return;
2421		3044
2422	/* since we use memcmp, we need to clear any padding data etc. */
2423	memset (&w->prev, 0, sizeof (ev_statdata));
2424	memset (&w->attr, 0, sizeof (ev_statdata));
2425
2426	ev_stat_stat (EV_A_ w);	3045	ev_stat_stat (EV_A_ w);
2427		3046
		3047	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2428	if (w->interval < MIN_STAT_INTERVAL)	3048	w->interval = MIN_STAT_INTERVAL;
2429	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2430		3049
2431	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3050	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2432	ev_set_priority (&w->timer, ev_priority (w));	3051	ev_set_priority (&w->timer, ev_priority (w));
2433		3052
2434	#if EV_USE_INOTIFY	3053	#if EV_USE_INOTIFY
2435	infy_init (EV_A);	3054	infy_init (EV_A);
2436		3055
2437	if (fs_fd >= 0)	3056	if (fs_fd >= 0)
2438	infy_add (EV_A_ w);	3057	infy_add (EV_A_ w);
2439	else	3058	else
2440	#endif	3059	#endif
2441	ev_timer_start (EV_A_ &w->timer);	3060	ev_timer_again (EV_A_ &w->timer);
2442		3061
2443	ev_start (EV_A_ (W)w, 1);	3062	ev_start (EV_A_ (W)w, 1);
		3063
		3064	EV_FREQUENT_CHECK;
2444	}	3065	}
2445		3066
2446	void	3067	void
2447	ev_stat_stop (EV_P_ ev_stat *w)	3068	ev_stat_stop (EV_P_ ev_stat *w)
2448	{	3069	{
2449	clear_pending (EV_A_ (W)w);	3070	clear_pending (EV_A_ (W)w);
2450	if (expect_false (!ev_is_active (w)))	3071	if (expect_false (!ev_is_active (w)))
2451	return;	3072	return;
2452		3073
		3074	EV_FREQUENT_CHECK;
		3075
2453	#if EV_USE_INOTIFY	3076	#if EV_USE_INOTIFY
2454	infy_del (EV_A_ w);	3077	infy_del (EV_A_ w);
2455	#endif	3078	#endif
2456	ev_timer_stop (EV_A_ &w->timer);	3079	ev_timer_stop (EV_A_ &w->timer);
2457		3080
2458	ev_stop (EV_A_ (W)w);	3081	ev_stop (EV_A_ (W)w);
		3082
		3083	EV_FREQUENT_CHECK;
2459	}	3084	}
2460	#endif	3085	#endif
2461		3086
2462	#if EV_IDLE_ENABLE	3087	#if EV_IDLE_ENABLE
2463	void	3088	void
…		…
2465	{	3090	{
2466	if (expect_false (ev_is_active (w)))	3091	if (expect_false (ev_is_active (w)))
2467	return;	3092	return;
2468		3093
2469	pri_adjust (EV_A_ (W)w);	3094	pri_adjust (EV_A_ (W)w);
		3095
		3096	EV_FREQUENT_CHECK;
2470		3097
2471	{	3098	{
2472	int active = ++idlecnt [ABSPRI (w)];	3099	int active = ++idlecnt [ABSPRI (w)];
2473		3100
2474	++idleall;	3101	++idleall;
2475	ev_start (EV_A_ (W)w, active);	3102	ev_start (EV_A_ (W)w, active);
2476		3103
2477	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	3104	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2478	idles [ABSPRI (w)][active - 1] = w;	3105	idles [ABSPRI (w)][active - 1] = w;
2479	}	3106	}
		3107
		3108	EV_FREQUENT_CHECK;
2480	}	3109	}
2481		3110
2482	void	3111	void
2483	ev_idle_stop (EV_P_ ev_idle *w)	3112	ev_idle_stop (EV_P_ ev_idle *w)
2484	{	3113	{
2485	clear_pending (EV_A_ (W)w);	3114	clear_pending (EV_A_ (W)w);
2486	if (expect_false (!ev_is_active (w)))	3115	if (expect_false (!ev_is_active (w)))
2487	return;	3116	return;
2488		3117
		3118	EV_FREQUENT_CHECK;
		3119
2489	{	3120	{
2490	int active = ev_active (w);	3121	int active = ev_active (w);
2491		3122
2492	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3123	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2493	ev_active (idles [ABSPRI (w)][active - 1]) = active;	3124	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2494		3125
2495	ev_stop (EV_A_ (W)w);	3126	ev_stop (EV_A_ (W)w);
2496	--idleall;	3127	--idleall;
2497	}	3128	}
		3129
		3130	EV_FREQUENT_CHECK;
2498	}	3131	}
2499	#endif	3132	#endif
2500		3133
2501	void	3134	void
2502	ev_prepare_start (EV_P_ ev_prepare *w)	3135	ev_prepare_start (EV_P_ ev_prepare *w)
2503	{	3136	{
2504	if (expect_false (ev_is_active (w)))	3137	if (expect_false (ev_is_active (w)))
2505	return;	3138	return;
		3139
		3140	EV_FREQUENT_CHECK;
2506		3141
2507	ev_start (EV_A_ (W)w, ++preparecnt);	3142	ev_start (EV_A_ (W)w, ++preparecnt);
2508	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3143	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2509	prepares [preparecnt - 1] = w;	3144	prepares [preparecnt - 1] = w;
		3145
		3146	EV_FREQUENT_CHECK;
2510	}	3147	}
2511		3148
2512	void	3149	void
2513	ev_prepare_stop (EV_P_ ev_prepare *w)	3150	ev_prepare_stop (EV_P_ ev_prepare *w)
2514	{	3151	{
2515	clear_pending (EV_A_ (W)w);	3152	clear_pending (EV_A_ (W)w);
2516	if (expect_false (!ev_is_active (w)))	3153	if (expect_false (!ev_is_active (w)))
2517	return;	3154	return;
2518		3155
		3156	EV_FREQUENT_CHECK;
		3157
2519	{	3158	{
2520	int active = ev_active (w);	3159	int active = ev_active (w);
2521		3160
2522	prepares [active - 1] = prepares [--preparecnt];	3161	prepares [active - 1] = prepares [--preparecnt];
2523	ev_active (prepares [active - 1]) = active;	3162	ev_active (prepares [active - 1]) = active;
2524	}	3163	}
2525		3164
2526	ev_stop (EV_A_ (W)w);	3165	ev_stop (EV_A_ (W)w);
		3166
		3167	EV_FREQUENT_CHECK;
2527	}	3168	}
2528		3169
2529	void	3170	void
2530	ev_check_start (EV_P_ ev_check *w)	3171	ev_check_start (EV_P_ ev_check *w)
2531	{	3172	{
2532	if (expect_false (ev_is_active (w)))	3173	if (expect_false (ev_is_active (w)))
2533	return;	3174	return;
		3175
		3176	EV_FREQUENT_CHECK;
2534		3177
2535	ev_start (EV_A_ (W)w, ++checkcnt);	3178	ev_start (EV_A_ (W)w, ++checkcnt);
2536	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3179	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2537	checks [checkcnt - 1] = w;	3180	checks [checkcnt - 1] = w;
		3181
		3182	EV_FREQUENT_CHECK;
2538	}	3183	}
2539		3184
2540	void	3185	void
2541	ev_check_stop (EV_P_ ev_check *w)	3186	ev_check_stop (EV_P_ ev_check *w)
2542	{	3187	{
2543	clear_pending (EV_A_ (W)w);	3188	clear_pending (EV_A_ (W)w);
2544	if (expect_false (!ev_is_active (w)))	3189	if (expect_false (!ev_is_active (w)))
2545	return;	3190	return;
2546		3191
		3192	EV_FREQUENT_CHECK;
		3193
2547	{	3194	{
2548	int active = ev_active (w);	3195	int active = ev_active (w);
2549		3196
2550	checks [active - 1] = checks [--checkcnt];	3197	checks [active - 1] = checks [--checkcnt];
2551	ev_active (checks [active - 1]) = active;	3198	ev_active (checks [active - 1]) = active;
2552	}	3199	}
2553		3200
2554	ev_stop (EV_A_ (W)w);	3201	ev_stop (EV_A_ (W)w);
		3202
		3203	EV_FREQUENT_CHECK;
2555	}	3204	}
2556		3205
2557	#if EV_EMBED_ENABLE	3206	#if EV_EMBED_ENABLE
2558	void noinline	3207	void noinline
2559	ev_embed_sweep (EV_P_ ev_embed *w)	3208	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2586	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3235	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2587	}	3236	}
2588	}	3237	}
2589	}	3238	}
2590		3239
		3240	static void
		3241	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3242	{
		3243	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3244
		3245	ev_embed_stop (EV_A_ w);
		3246
		3247	{
		3248	struct ev_loop *loop = w->other;
		3249
		3250	ev_loop_fork (EV_A);
		3251	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3252	}
		3253
		3254	ev_embed_start (EV_A_ w);
		3255	}
		3256
2591	#if 0	3257	#if 0
2592	static void	3258	static void
2593	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3259	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2594	{	3260	{
2595	ev_idle_stop (EV_A_ idle);	3261	ev_idle_stop (EV_A_ idle);
…		…
2602	if (expect_false (ev_is_active (w)))	3268	if (expect_false (ev_is_active (w)))
2603	return;	3269	return;
2604		3270
2605	{	3271	{
2606	struct ev_loop *loop = w->other;	3272	struct ev_loop *loop = w->other;
2607	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3273	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2608	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3274	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2609	}	3275	}
		3276
		3277	EV_FREQUENT_CHECK;
2610		3278
2611	ev_set_priority (&w->io, ev_priority (w));	3279	ev_set_priority (&w->io, ev_priority (w));
2612	ev_io_start (EV_A_ &w->io);	3280	ev_io_start (EV_A_ &w->io);
2613		3281
2614	ev_prepare_init (&w->prepare, embed_prepare_cb);	3282	ev_prepare_init (&w->prepare, embed_prepare_cb);
2615	ev_set_priority (&w->prepare, EV_MINPRI);	3283	ev_set_priority (&w->prepare, EV_MINPRI);
2616	ev_prepare_start (EV_A_ &w->prepare);	3284	ev_prepare_start (EV_A_ &w->prepare);
2617		3285
		3286	ev_fork_init (&w->fork, embed_fork_cb);
		3287	ev_fork_start (EV_A_ &w->fork);
		3288
2618	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3289	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2619		3290
2620	ev_start (EV_A_ (W)w, 1);	3291	ev_start (EV_A_ (W)w, 1);
		3292
		3293	EV_FREQUENT_CHECK;
2621	}	3294	}
2622		3295
2623	void	3296	void
2624	ev_embed_stop (EV_P_ ev_embed *w)	3297	ev_embed_stop (EV_P_ ev_embed *w)
2625	{	3298	{
2626	clear_pending (EV_A_ (W)w);	3299	clear_pending (EV_A_ (W)w);
2627	if (expect_false (!ev_is_active (w)))	3300	if (expect_false (!ev_is_active (w)))
2628	return;	3301	return;
2629		3302
		3303	EV_FREQUENT_CHECK;
		3304
2630	ev_io_stop (EV_A_ &w->io);	3305	ev_io_stop (EV_A_ &w->io);
2631	ev_prepare_stop (EV_A_ &w->prepare);	3306	ev_prepare_stop (EV_A_ &w->prepare);
		3307	ev_fork_stop (EV_A_ &w->fork);
2632		3308
2633	ev_stop (EV_A_ (W)w);	3309	EV_FREQUENT_CHECK;
2634	}	3310	}
2635	#endif	3311	#endif
2636		3312
2637	#if EV_FORK_ENABLE	3313	#if EV_FORK_ENABLE
2638	void	3314	void
2639	ev_fork_start (EV_P_ ev_fork *w)	3315	ev_fork_start (EV_P_ ev_fork *w)
2640	{	3316	{
2641	if (expect_false (ev_is_active (w)))	3317	if (expect_false (ev_is_active (w)))
2642	return;	3318	return;
		3319
		3320	EV_FREQUENT_CHECK;
2643		3321
2644	ev_start (EV_A_ (W)w, ++forkcnt);	3322	ev_start (EV_A_ (W)w, ++forkcnt);
2645	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3323	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2646	forks [forkcnt - 1] = w;	3324	forks [forkcnt - 1] = w;
		3325
		3326	EV_FREQUENT_CHECK;
2647	}	3327	}
2648		3328
2649	void	3329	void
2650	ev_fork_stop (EV_P_ ev_fork *w)	3330	ev_fork_stop (EV_P_ ev_fork *w)
2651	{	3331	{
2652	clear_pending (EV_A_ (W)w);	3332	clear_pending (EV_A_ (W)w);
2653	if (expect_false (!ev_is_active (w)))	3333	if (expect_false (!ev_is_active (w)))
2654	return;	3334	return;
2655		3335
		3336	EV_FREQUENT_CHECK;
		3337
2656	{	3338	{
2657	int active = ev_active (w);	3339	int active = ev_active (w);
2658		3340
2659	forks [active - 1] = forks [--forkcnt];	3341	forks [active - 1] = forks [--forkcnt];
2660	ev_active (forks [active - 1]) = active;	3342	ev_active (forks [active - 1]) = active;
2661	}	3343	}
2662		3344
2663	ev_stop (EV_A_ (W)w);	3345	ev_stop (EV_A_ (W)w);
		3346
		3347	EV_FREQUENT_CHECK;
2664	}	3348	}
2665	#endif	3349	#endif
2666		3350
2667	#if EV_ASYNC_ENABLE	3351	#if EV_ASYNC_ENABLE
2668	void	3352	void
…		…
2670	{	3354	{
2671	if (expect_false (ev_is_active (w)))	3355	if (expect_false (ev_is_active (w)))
2672	return;	3356	return;
2673		3357
2674	evpipe_init (EV_A);	3358	evpipe_init (EV_A);
		3359
		3360	EV_FREQUENT_CHECK;
2675		3361
2676	ev_start (EV_A_ (W)w, ++asynccnt);	3362	ev_start (EV_A_ (W)w, ++asynccnt);
2677	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3363	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2678	asyncs [asynccnt - 1] = w;	3364	asyncs [asynccnt - 1] = w;
		3365
		3366	EV_FREQUENT_CHECK;
2679	}	3367	}
2680		3368
2681	void	3369	void
2682	ev_async_stop (EV_P_ ev_async *w)	3370	ev_async_stop (EV_P_ ev_async *w)
2683	{	3371	{
2684	clear_pending (EV_A_ (W)w);	3372	clear_pending (EV_A_ (W)w);
2685	if (expect_false (!ev_is_active (w)))	3373	if (expect_false (!ev_is_active (w)))
2686	return;	3374	return;
2687		3375
		3376	EV_FREQUENT_CHECK;
		3377
2688	{	3378	{
2689	int active = ev_active (w);	3379	int active = ev_active (w);
2690		3380
2691	asyncs [active - 1] = asyncs [--asynccnt];	3381	asyncs [active - 1] = asyncs [--asynccnt];
2692	ev_active (asyncs [active - 1]) = active;	3382	ev_active (asyncs [active - 1]) = active;
2693	}	3383	}
2694		3384
2695	ev_stop (EV_A_ (W)w);	3385	ev_stop (EV_A_ (W)w);
		3386
		3387	EV_FREQUENT_CHECK;
2696	}	3388	}
2697		3389
2698	void	3390	void
2699	ev_async_send (EV_P_ ev_async *w)	3391	ev_async_send (EV_P_ ev_async *w)
2700	{	3392	{
…		…
2717	once_cb (EV_P_ struct ev_once *once, int revents)	3409	once_cb (EV_P_ struct ev_once *once, int revents)
2718	{	3410	{
2719	void (*cb)(int revents, void *arg) = once->cb;	3411	void (*cb)(int revents, void *arg) = once->cb;
2720	void *arg = once->arg;	3412	void *arg = once->arg;
2721		3413
2722	ev_io_stop (EV_A_ &once->io);	3414	ev_io_stop (EV_A_ &once->io);
2723	ev_timer_stop (EV_A_ &once->to);	3415	ev_timer_stop (EV_A_ &once->to);
2724	ev_free (once);	3416	ev_free (once);
2725		3417
2726	cb (revents, arg);	3418	cb (revents, arg);
2727	}	3419	}
2728		3420
2729	static void	3421	static void
2730	once_cb_io (EV_P_ ev_io *w, int revents)	3422	once_cb_io (EV_P_ ev_io *w, int revents)
2731	{	3423	{
2732	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3424	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3425
		3426	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2733	}	3427	}
2734		3428
2735	static void	3429	static void
2736	once_cb_to (EV_P_ ev_timer *w, int revents)	3430	once_cb_to (EV_P_ ev_timer *w, int revents)
2737	{	3431	{
2738	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3432	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3433
		3434	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2739	}	3435	}
2740		3436
2741	void	3437	void
2742	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3438	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2743	{	3439	{
…		…
2765	ev_timer_set (&once->to, timeout, 0.);	3461	ev_timer_set (&once->to, timeout, 0.);
2766	ev_timer_start (EV_A_ &once->to);	3462	ev_timer_start (EV_A_ &once->to);
2767	}	3463	}
2768	}	3464	}
2769		3465
		3466	/*****************************************************************************/
		3467
		3468	#if EV_WALK_ENABLE
		3469	void
		3470	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3471	{
		3472	int i, j;
		3473	ev_watcher_list *wl, *wn;
		3474
		3475	if (types & (EV_IO | EV_EMBED))
		3476	for (i = 0; i < anfdmax; ++i)
		3477	for (wl = anfds [i].head; wl; )
		3478	{
		3479	wn = wl->next;
		3480
		3481	#if EV_EMBED_ENABLE
		3482	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3483	{
		3484	if (types & EV_EMBED)
		3485	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3486	}
		3487	else
		3488	#endif
		3489	#if EV_USE_INOTIFY
		3490	if (ev_cb ((ev_io *)wl) == infy_cb)
		3491	;
		3492	else
		3493	#endif
		3494	if ((ev_io *)wl != &pipe_w)
		3495	if (types & EV_IO)
		3496	cb (EV_A_ EV_IO, wl);
		3497
		3498	wl = wn;
		3499	}
		3500
		3501	if (types & (EV_TIMER | EV_STAT))
		3502	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3503	#if EV_STAT_ENABLE
		3504	/*TODO: timer is not always active*/
		3505	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3506	{
		3507	if (types & EV_STAT)
		3508	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3509	}
		3510	else
		3511	#endif
		3512	if (types & EV_TIMER)
		3513	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3514
		3515	#if EV_PERIODIC_ENABLE
		3516	if (types & EV_PERIODIC)
		3517	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3518	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3519	#endif
		3520
		3521	#if EV_IDLE_ENABLE
		3522	if (types & EV_IDLE)
		3523	for (j = NUMPRI; i--; )
		3524	for (i = idlecnt [j]; i--; )
		3525	cb (EV_A_ EV_IDLE, idles [j][i]);
		3526	#endif
		3527
		3528	#if EV_FORK_ENABLE
		3529	if (types & EV_FORK)
		3530	for (i = forkcnt; i--; )
		3531	if (ev_cb (forks [i]) != embed_fork_cb)
		3532	cb (EV_A_ EV_FORK, forks [i]);
		3533	#endif
		3534
		3535	#if EV_ASYNC_ENABLE
		3536	if (types & EV_ASYNC)
		3537	for (i = asynccnt; i--; )
		3538	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3539	#endif
		3540
		3541	if (types & EV_PREPARE)
		3542	for (i = preparecnt; i--; )
		3543	#if EV_EMBED_ENABLE
		3544	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3545	#endif
		3546	cb (EV_A_ EV_PREPARE, prepares [i]);
		3547
		3548	if (types & EV_CHECK)
		3549	for (i = checkcnt; i--; )
		3550	cb (EV_A_ EV_CHECK, checks [i]);
		3551
		3552	if (types & EV_SIGNAL)
		3553	for (i = 0; i < signalmax; ++i)
		3554	for (wl = signals [i].head; wl; )
		3555	{
		3556	wn = wl->next;
		3557	cb (EV_A_ EV_SIGNAL, wl);
		3558	wl = wn;
		3559	}
		3560
		3561	if (types & EV_CHILD)
		3562	for (i = EV_PID_HASHSIZE; i--; )
		3563	for (wl = childs [i]; wl; )
		3564	{
		3565	wn = wl->next;
		3566	cb (EV_A_ EV_CHILD, wl);
		3567	wl = wn;
		3568	}
		3569	/* EV_STAT 0x00001000 /* stat data changed */
		3570	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3571	}
		3572	#endif
		3573
2770	#if EV_MULTIPLICITY	3574	#if EV_MULTIPLICITY
2771	#include "ev_wrap.h"	3575	#include "ev_wrap.h"
2772	#endif	3576	#endif
2773		3577
2774	#ifdef __cplusplus	3578	#ifdef __cplusplus

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