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Comparing libev/ev.c (file contents):
Revision 1.224 by root, Wed Apr 9 22:07:50 2008 UTC vs.
Revision 1.313 by root, Wed Aug 19 23:44:51 2009 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
47	# include EV_CONFIG_H	47	# include EV_CONFIG_H
48	# else	48	# else
49	# include "config.h"	49	# include "config.h"
50	# endif	50	# endif
51		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
		64	# endif
		65
52	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
55	# endif	69	# endif
56	# ifndef EV_USE_REALTIME	70	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	71	# define EV_USE_REALTIME 0
58	# endif	72	# endif
59	# else	73	# else
60	# ifndef EV_USE_MONOTONIC	74	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	75	# define EV_USE_MONOTONIC 0
62	# endif	76	# endif
…		…
119	# else	133	# else
120	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
121	# endif	135	# endif
122	# endif	136	# endif
123		137
		138	# ifndef EV_USE_SIGNALFD
		139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		140	# define EV_USE_SIGNALFD 1
		141	# else
		142	# define EV_USE_SIGNALFD 0
		143	# endif
		144	# endif
		145
124	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
125	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
126	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD 1
127	# else	149	# else
128	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
129	# endif	151	# endif
130	# endif	152	# endif
131		153
132	#endif	154	#endif
133		155
134	#include <math.h>	156	#include <math.h>
135	#include <stdlib.h>	157	#include <stdlib.h>
136	#include <fcntl.h>	158	#include <fcntl.h>
…		…
154	#ifndef _WIN32	176	#ifndef _WIN32
155	# include <sys/time.h>	177	# include <sys/time.h>
156	# include <sys/wait.h>	178	# include <sys/wait.h>
157	# include <unistd.h>	179	# include <unistd.h>
158	#else	180	#else
		181	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	182	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	183	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	184	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	185	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	186	# endif
164	#endif	187	#endif
165		188
166	/* this block tries to deduce configuration from header-defined symbols and defaults */	189	/* this block tries to deduce configuration from header-defined symbols and defaults */
167		190
		191	/* try to deduce the maximum number of signals on this platform */
		192	#if defined (EV_NSIG)
		193	/* use what's provided */
		194	#elif defined (NSIG)
		195	# define EV_NSIG (NSIG)
		196	#elif defined(_NSIG)
		197	# define EV_NSIG (_NSIG)
		198	#elif defined (SIGMAX)
		199	# define EV_NSIG (SIGMAX+1)
		200	#elif defined (SIG_MAX)
		201	# define EV_NSIG (SIG_MAX+1)
		202	#elif defined (_SIG_MAX)
		203	# define EV_NSIG (_SIG_MAX+1)
		204	#elif defined (MAXSIG)
		205	# define EV_NSIG (MAXSIG+1)
		206	#elif defined (MAX_SIG)
		207	# define EV_NSIG (MAX_SIG+1)
		208	#elif defined (SIGARRAYSIZE)
		209	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		210	#elif defined (_sys_nsig)
		211	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		212	#else
		213	# error "unable to find value for NSIG, please report"
		214	/* to make it compile regardless, just remove the above line */
		215	# define EV_NSIG 65
		216	#endif
		217
		218	#ifndef EV_USE_CLOCK_SYSCALL
		219	# if __linux && __GLIBC__ >= 2
		220	# define EV_USE_CLOCK_SYSCALL 1
		221	# else
		222	# define EV_USE_CLOCK_SYSCALL 0
		223	# endif
		224	#endif
		225
168	#ifndef EV_USE_MONOTONIC	226	#ifndef EV_USE_MONOTONIC
		227	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		228	# define EV_USE_MONOTONIC 1
		229	# else
169	# define EV_USE_MONOTONIC 0	230	# define EV_USE_MONOTONIC 0
		231	# endif
170	#endif	232	#endif
171		233
172	#ifndef EV_USE_REALTIME	234	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	235	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	236	#endif
175		237
176	#ifndef EV_USE_NANOSLEEP	238	#ifndef EV_USE_NANOSLEEP
		239	# if _POSIX_C_SOURCE >= 199309L
		240	# define EV_USE_NANOSLEEP 1
		241	# else
177	# define EV_USE_NANOSLEEP 0	242	# define EV_USE_NANOSLEEP 0
		243	# endif
178	#endif	244	#endif
179		245
180	#ifndef EV_USE_SELECT	246	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	247	# define EV_USE_SELECT 1
182	#endif	248	#endif
…		…
235	# else	301	# else
236	# define EV_USE_EVENTFD 0	302	# define EV_USE_EVENTFD 0
237	# endif	303	# endif
238	#endif	304	#endif
239		305
		306	#ifndef EV_USE_SIGNALFD
		307	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9))
		308	# define EV_USE_SIGNALFD 1
		309	# else
		310	# define EV_USE_SIGNALFD 0
		311	# endif
		312	#endif
		313
		314	#if 0 /* debugging */
		315	# define EV_VERIFY 3
		316	# define EV_USE_4HEAP 1
		317	# define EV_HEAP_CACHE_AT 1
		318	#endif
		319
		320	#ifndef EV_VERIFY
		321	# define EV_VERIFY !EV_MINIMAL
		322	#endif
		323
		324	#ifndef EV_USE_4HEAP
		325	# define EV_USE_4HEAP !EV_MINIMAL
		326	#endif
		327
		328	#ifndef EV_HEAP_CACHE_AT
		329	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		330	#endif
		331
		332	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		333	/* which makes programs even slower. might work on other unices, too. */
		334	#if EV_USE_CLOCK_SYSCALL
		335	# include <syscall.h>
		336	# ifdef SYS_clock_gettime
		337	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		338	# undef EV_USE_MONOTONIC
		339	# define EV_USE_MONOTONIC 1
		340	# else
		341	# undef EV_USE_CLOCK_SYSCALL
		342	# define EV_USE_CLOCK_SYSCALL 0
		343	# endif
		344	#endif
		345
240	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	346	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
241		347
242	#ifndef CLOCK_MONOTONIC	348	#ifndef CLOCK_MONOTONIC
243	# undef EV_USE_MONOTONIC	349	# undef EV_USE_MONOTONIC
244	# define EV_USE_MONOTONIC 0	350	# define EV_USE_MONOTONIC 0
…		…
259	# include <sys/select.h>	365	# include <sys/select.h>
260	# endif	366	# endif
261	#endif	367	#endif
262		368
263	#if EV_USE_INOTIFY	369	#if EV_USE_INOTIFY
		370	# include <sys/utsname.h>
		371	# include <sys/statfs.h>
264	# include <sys/inotify.h>	372	# include <sys/inotify.h>
		373	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		374	# ifndef IN_DONT_FOLLOW
		375	# undef EV_USE_INOTIFY
		376	# define EV_USE_INOTIFY 0
		377	# endif
265	#endif	378	#endif
266		379
267	#if EV_SELECT_IS_WINSOCKET	380	#if EV_SELECT_IS_WINSOCKET
268	# include <winsock.h>	381	# include <winsock.h>
269	#endif	382	#endif
270		383
271	#if EV_USE_EVENTFD	384	#if EV_USE_EVENTFD
272	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	385	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273	# include <stdint.h>	386	# include <stdint.h>
		387	# ifndef EFD_NONBLOCK
		388	# define EFD_NONBLOCK O_NONBLOCK
		389	# endif
		390	# ifndef EFD_CLOEXEC
		391	# ifdef O_CLOEXEC
		392	# define EFD_CLOEXEC O_CLOEXEC
		393	# else
		394	# define EFD_CLOEXEC 02000000
		395	# endif
		396	# endif
274	# ifdef __cplusplus	397	# ifdef __cplusplus
275	extern "C" {	398	extern "C" {
276	# endif	399	# endif
277	int eventfd (unsigned int initval, int flags);	400	int eventfd (unsigned int initval, int flags);
278	# ifdef __cplusplus	401	# ifdef __cplusplus
279	}	402	}
280	# endif	403	# endif
281	#endif	404	#endif
282		405
		406	#if EV_USE_SIGNALFD
		407	# include <sys/signalfd.h>
		408	#endif
		409
283	/**/	410	/**/
		411
		412	#if EV_VERIFY >= 3
		413	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		414	#else
		415	# define EV_FREQUENT_CHECK do { } while (0)
		416	#endif
284		417
285	/*	418	/*
286	* This is used to avoid floating point rounding problems.	419	* This is used to avoid floating point rounding problems.
287	* It is added to ev_rt_now when scheduling periodics	420	* It is added to ev_rt_now when scheduling periodics
288	* to ensure progress, time-wise, even when rounding	421	* to ensure progress, time-wise, even when rounding
…		…
315	# define inline_speed static noinline	448	# define inline_speed static noinline
316	#else	449	#else
317	# define inline_speed static inline	450	# define inline_speed static inline
318	#endif	451	#endif
319		452
320	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	453	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		454
		455	#if EV_MINPRI == EV_MAXPRI
		456	# define ABSPRI(w) (((W)w), 0)
		457	#else
321	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	458	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		459	#endif
322		460
323	#define EMPTY /* required for microsofts broken pseudo-c compiler */	461	#define EMPTY /* required for microsofts broken pseudo-c compiler */
324	#define EMPTY2(a,b) /* used to suppress some warnings */	462	#define EMPTY2(a,b) /* used to suppress some warnings */
325		463
326	typedef ev_watcher *W;	464	typedef ev_watcher *W;
327	typedef ev_watcher_list *WL;	465	typedef ev_watcher_list *WL;
328	typedef ev_watcher_time *WT;	466	typedef ev_watcher_time *WT;
329		467
330	#if EV_USE_MONOTONIC	468	#define ev_active(w) ((W)(w))->active
		469	#define ev_at(w) ((WT)(w))->at
		470
		471	#if EV_USE_REALTIME
331	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	472	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
332	/* giving it a reasonably high chance of working on typical architetcures */	473	/* giving it a reasonably high chance of working on typical architetcures */
		474	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		475	#endif
		476
		477	#if EV_USE_MONOTONIC
333	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	478	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		479	#endif
		480
		481	#ifndef EV_FD_TO_WIN32_HANDLE
		482	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		483	#endif
		484	#ifndef EV_WIN32_HANDLE_TO_FD
		485	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0)
		486	#endif
		487	#ifndef EV_WIN32_CLOSE_FD
		488	# define EV_WIN32_CLOSE_FD(fd) close (fd)
334	#endif	489	#endif
335		490
336	#ifdef _WIN32	491	#ifdef _WIN32
337	# include "ev_win32.c"	492	# include "ev_win32.c"
338	#endif	493	#endif
…		…
346	{	501	{
347	syserr_cb = cb;	502	syserr_cb = cb;
348	}	503	}
349		504
350	static void noinline	505	static void noinline
351	syserr (const char *msg)	506	ev_syserr (const char *msg)
352	{	507	{
353	if (!msg)	508	if (!msg)
354	msg = "(libev) system error";	509	msg = "(libev) system error";
355		510
356	if (syserr_cb)	511	if (syserr_cb)
…		…
402	#define ev_malloc(size) ev_realloc (0, (size))	557	#define ev_malloc(size) ev_realloc (0, (size))
403	#define ev_free(ptr) ev_realloc ((ptr), 0)	558	#define ev_free(ptr) ev_realloc ((ptr), 0)
404		559
405	/*****************************************************************************/	560	/*****************************************************************************/
406		561
		562	/* set in reify when reification needed */
		563	#define EV_ANFD_REIFY 1
		564
		565	/* file descriptor info structure */
407	typedef struct	566	typedef struct
408	{	567	{
409	WL head;	568	WL head;
410	unsigned char events;	569	unsigned char events; /* the events watched for */
		570	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		571	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
411	unsigned char reify;	572	unsigned char unused;
		573	#if EV_USE_EPOLL
		574	unsigned int egen; /* generation counter to counter epoll bugs */
		575	#endif
412	#if EV_SELECT_IS_WINSOCKET	576	#if EV_SELECT_IS_WINSOCKET
413	SOCKET handle;	577	SOCKET handle;
414	#endif	578	#endif
415	} ANFD;	579	} ANFD;
416		580
		581	/* stores the pending event set for a given watcher */
417	typedef struct	582	typedef struct
418	{	583	{
419	W w;	584	W w;
420	int events;	585	int events; /* the pending event set for the given watcher */
421	} ANPENDING;	586	} ANPENDING;
422		587
423	#if EV_USE_INOTIFY	588	#if EV_USE_INOTIFY
		589	/* hash table entry per inotify-id */
424	typedef struct	590	typedef struct
425	{	591	{
426	WL head;	592	WL head;
427	} ANFS;	593	} ANFS;
		594	#endif
		595
		596	/* Heap Entry */
		597	#if EV_HEAP_CACHE_AT
		598	/* a heap element */
		599	typedef struct {
		600	ev_tstamp at;
		601	WT w;
		602	} ANHE;
		603
		604	#define ANHE_w(he) (he).w /* access watcher, read-write */
		605	#define ANHE_at(he) (he).at /* access cached at, read-only */
		606	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		607	#else
		608	/* a heap element */
		609	typedef WT ANHE;
		610
		611	#define ANHE_w(he) (he)
		612	#define ANHE_at(he) (he)->at
		613	#define ANHE_at_cache(he)
428	#endif	614	#endif
429		615
430	#if EV_MULTIPLICITY	616	#if EV_MULTIPLICITY
431		617
432	struct ev_loop	618	struct ev_loop
…		…
451		637
452	static int ev_default_loop_ptr;	638	static int ev_default_loop_ptr;
453		639
454	#endif	640	#endif
455		641
		642	#if EV_MINIMAL < 2
		643	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		644	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		645	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		646	#else
		647	# define EV_RELEASE_CB (void)0
		648	# define EV_ACQUIRE_CB (void)0
		649	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		650	#endif
		651
		652	#define EVUNLOOP_RECURSE 0x80
		653
456	/*****************************************************************************/	654	/*****************************************************************************/
457		655
		656	#ifndef EV_HAVE_EV_TIME
458	ev_tstamp	657	ev_tstamp
459	ev_time (void)	658	ev_time (void)
460	{	659	{
461	#if EV_USE_REALTIME	660	#if EV_USE_REALTIME
		661	if (expect_true (have_realtime))
		662	{
462	struct timespec ts;	663	struct timespec ts;
463	clock_gettime (CLOCK_REALTIME, &ts);	664	clock_gettime (CLOCK_REALTIME, &ts);
464	return ts.tv_sec + ts.tv_nsec * 1e-9;	665	return ts.tv_sec + ts.tv_nsec * 1e-9;
465	#else	666	}
		667	#endif
		668
466	struct timeval tv;	669	struct timeval tv;
467	gettimeofday (&tv, 0);	670	gettimeofday (&tv, 0);
468	return tv.tv_sec + tv.tv_usec * 1e-6;	671	return tv.tv_sec + tv.tv_usec * 1e-6;
469	#endif
470	}	672	}
		673	#endif
471		674
472	ev_tstamp inline_size	675	inline_size ev_tstamp
473	get_clock (void)	676	get_clock (void)
474	{	677	{
475	#if EV_USE_MONOTONIC	678	#if EV_USE_MONOTONIC
476	if (expect_true (have_monotonic))	679	if (expect_true (have_monotonic))
477	{	680	{
…		…
510	struct timeval tv;	713	struct timeval tv;
511		714
512	tv.tv_sec = (time_t)delay;	715	tv.tv_sec = (time_t)delay;
513	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	716	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
514		717
		718	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		719	/* something not guaranteed by newer posix versions, but guaranteed */
		720	/* by older ones */
515	select (0, 0, 0, 0, &tv);	721	select (0, 0, 0, 0, &tv);
516	#endif	722	#endif
517	}	723	}
518	}	724	}
519		725
520	/*****************************************************************************/	726	/*****************************************************************************/
521		727
522	int inline_size	728	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		729
		730	/* find a suitable new size for the given array, */
		731	/* hopefully by rounding to a ncie-to-malloc size */
		732	inline_size int
523	array_nextsize (int elem, int cur, int cnt)	733	array_nextsize (int elem, int cur, int cnt)
524	{	734	{
525	int ncur = cur + 1;	735	int ncur = cur + 1;
526		736
527	do	737	do
528	ncur <<= 1;	738	ncur <<= 1;
529	while (cnt > ncur);	739	while (cnt > ncur);
530		740
531	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	741	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
532	if (elem * ncur > 4096)	742	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
533	{	743	{
534	ncur *= elem;	744	ncur *= elem;
535	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	745	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
536	ncur = ncur - sizeof (void *) * 4;	746	ncur = ncur - sizeof (void *) * 4;
537	ncur /= elem;	747	ncur /= elem;
538	}	748	}
539		749
540	return ncur;	750	return ncur;
…		…
544	array_realloc (int elem, void *base, int *cur, int cnt)	754	array_realloc (int elem, void *base, int *cur, int cnt)
545	{	755	{
546	*cur = array_nextsize (elem, *cur, cnt);	756	*cur = array_nextsize (elem, *cur, cnt);
547	return ev_realloc (base, elem * *cur);	757	return ev_realloc (base, elem * *cur);
548	}	758	}
		759
		760	#define array_init_zero(base,count) \
		761	memset ((void *)(base), 0, sizeof (*(base)) * (count))
549		762
550	#define array_needsize(type,base,cur,cnt,init) \	763	#define array_needsize(type,base,cur,cnt,init) \
551	if (expect_false ((cnt) > (cur))) \	764	if (expect_false ((cnt) > (cur))) \
552	{ \	765	{ \
553	int ocur_ = (cur); \	766	int ocur_ = (cur); \
…		…
565	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	778	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
566	}	779	}
567	#endif	780	#endif
568		781
569	#define array_free(stem, idx) \	782	#define array_free(stem, idx) \
570	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	783	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
571		784
572	/*****************************************************************************/	785	/*****************************************************************************/
		786
		787	/* dummy callback for pending events */
		788	static void noinline
		789	pendingcb (EV_P_ ev_prepare *w, int revents)
		790	{
		791	}
573		792
574	void noinline	793	void noinline
575	ev_feed_event (EV_P_ void *w, int revents)	794	ev_feed_event (EV_P_ void *w, int revents)
576	{	795	{
577	W w_ = (W)w;	796	W w_ = (W)w;
…		…
586	pendings [pri][w_->pending - 1].w = w_;	805	pendings [pri][w_->pending - 1].w = w_;
587	pendings [pri][w_->pending - 1].events = revents;	806	pendings [pri][w_->pending - 1].events = revents;
588	}	807	}
589	}	808	}
590		809
591	void inline_speed	810	inline_speed void
		811	feed_reverse (EV_P_ W w)
		812	{
		813	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		814	rfeeds [rfeedcnt++] = w;
		815	}
		816
		817	inline_size void
		818	feed_reverse_done (EV_P_ int revents)
		819	{
		820	do
		821	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		822	while (rfeedcnt);
		823	}
		824
		825	inline_speed void
592	queue_events (EV_P_ W *events, int eventcnt, int type)	826	queue_events (EV_P_ W *events, int eventcnt, int type)
593	{	827	{
594	int i;	828	int i;
595		829
596	for (i = 0; i < eventcnt; ++i)	830	for (i = 0; i < eventcnt; ++i)
597	ev_feed_event (EV_A_ events [i], type);	831	ev_feed_event (EV_A_ events [i], type);
598	}	832	}
599		833
600	/*****************************************************************************/	834	/*****************************************************************************/
601		835
602	void inline_size	836	inline_speed void
603	anfds_init (ANFD *base, int count)
604	{
605	while (count--)
606	{
607	base->head = 0;
608	base->events = EV_NONE;
609	base->reify = 0;
610
611	++base;
612	}
613	}
614
615	void inline_speed
616	fd_event (EV_P_ int fd, int revents)	837	fd_event_nc (EV_P_ int fd, int revents)
617	{	838	{
618	ANFD *anfd = anfds + fd;	839	ANFD *anfd = anfds + fd;
619	ev_io *w;	840	ev_io *w;
620		841
621	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	842	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
625	if (ev)	846	if (ev)
626	ev_feed_event (EV_A_ (W)w, ev);	847	ev_feed_event (EV_A_ (W)w, ev);
627	}	848	}
628	}	849	}
629		850
		851	/* do not submit kernel events for fds that have reify set */
		852	/* because that means they changed while we were polling for new events */
		853	inline_speed void
		854	fd_event (EV_P_ int fd, int revents)
		855	{
		856	ANFD *anfd = anfds + fd;
		857
		858	if (expect_true (!anfd->reify))
		859	fd_event_nc (EV_A_ fd, revents);
		860	}
		861
630	void	862	void
631	ev_feed_fd_event (EV_P_ int fd, int revents)	863	ev_feed_fd_event (EV_P_ int fd, int revents)
632	{	864	{
633	if (fd >= 0 && fd < anfdmax)	865	if (fd >= 0 && fd < anfdmax)
634	fd_event (EV_A_ fd, revents);	866	fd_event_nc (EV_A_ fd, revents);
635	}	867	}
636		868
637	void inline_size	869	/* make sure the external fd watch events are in-sync */
		870	/* with the kernel/libev internal state */
		871	inline_size void
638	fd_reify (EV_P)	872	fd_reify (EV_P)
639	{	873	{
640	int i;	874	int i;
641		875
642	for (i = 0; i < fdchangecnt; ++i)	876	for (i = 0; i < fdchangecnt; ++i)
…		…
651	events |= (unsigned char)w->events;	885	events |= (unsigned char)w->events;
652		886
653	#if EV_SELECT_IS_WINSOCKET	887	#if EV_SELECT_IS_WINSOCKET
654	if (events)	888	if (events)
655	{	889	{
656	unsigned long argp;	890	unsigned long arg;
657	#ifdef EV_FD_TO_WIN32_HANDLE
658	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	891	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
659	#else
660	anfd->handle = _get_osfhandle (fd);
661	#endif
662	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	892	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
663	}	893	}
664	#endif	894	#endif
665		895
666	{	896	{
667	unsigned char o_events = anfd->events;	897	unsigned char o_events = anfd->events;
668	unsigned char o_reify = anfd->reify;	898	unsigned char o_reify = anfd->reify;
669		899
670	anfd->reify = 0;	900	anfd->reify = 0;
671	anfd->events = events;	901	anfd->events = events;
672		902
673	if (o_events != events || o_reify & EV_IOFDSET)	903	if (o_events != events || o_reify & EV__IOFDSET)
674	backend_modify (EV_A_ fd, o_events, events);	904	backend_modify (EV_A_ fd, o_events, events);
675	}	905	}
676	}	906	}
677		907
678	fdchangecnt = 0;	908	fdchangecnt = 0;
679	}	909	}
680		910
681	void inline_size	911	/* something about the given fd changed */
		912	inline_size void
682	fd_change (EV_P_ int fd, int flags)	913	fd_change (EV_P_ int fd, int flags)
683	{	914	{
684	unsigned char reify = anfds [fd].reify;	915	unsigned char reify = anfds [fd].reify;
685	anfds [fd].reify |= flags;	916	anfds [fd].reify |= flags;
686		917
…		…
690	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	921	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
691	fdchanges [fdchangecnt - 1] = fd;	922	fdchanges [fdchangecnt - 1] = fd;
692	}	923	}
693	}	924	}
694		925
695	void inline_speed	926	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		927	inline_speed void
696	fd_kill (EV_P_ int fd)	928	fd_kill (EV_P_ int fd)
697	{	929	{
698	ev_io *w;	930	ev_io *w;
699		931
700	while ((w = (ev_io *)anfds [fd].head))	932	while ((w = (ev_io *)anfds [fd].head))
…		…
702	ev_io_stop (EV_A_ w);	934	ev_io_stop (EV_A_ w);
703	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	935	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
704	}	936	}
705	}	937	}
706		938
707	int inline_size	939	/* check whether the given fd is atcually valid, for error recovery */
		940	inline_size int
708	fd_valid (int fd)	941	fd_valid (int fd)
709	{	942	{
710	#ifdef _WIN32	943	#ifdef _WIN32
711	return _get_osfhandle (fd) != -1;	944	return _get_osfhandle (fd) != -1;
712	#else	945	#else
…		…
720	{	953	{
721	int fd;	954	int fd;
722		955
723	for (fd = 0; fd < anfdmax; ++fd)	956	for (fd = 0; fd < anfdmax; ++fd)
724	if (anfds [fd].events)	957	if (anfds [fd].events)
725	if (!fd_valid (fd) == -1 && errno == EBADF)	958	if (!fd_valid (fd) && errno == EBADF)
726	fd_kill (EV_A_ fd);	959	fd_kill (EV_A_ fd);
727	}	960	}
728		961
729	/* called on ENOMEM in select/poll to kill some fds and retry */	962	/* called on ENOMEM in select/poll to kill some fds and retry */
730	static void noinline	963	static void noinline
…		…
734		967
735	for (fd = anfdmax; fd--; )	968	for (fd = anfdmax; fd--; )
736	if (anfds [fd].events)	969	if (anfds [fd].events)
737	{	970	{
738	fd_kill (EV_A_ fd);	971	fd_kill (EV_A_ fd);
739	return;	972	break;
740	}	973	}
741	}	974	}
742		975
743	/* usually called after fork if backend needs to re-arm all fds from scratch */	976	/* usually called after fork if backend needs to re-arm all fds from scratch */
744	static void noinline	977	static void noinline
…		…
748		981
749	for (fd = 0; fd < anfdmax; ++fd)	982	for (fd = 0; fd < anfdmax; ++fd)
750	if (anfds [fd].events)	983	if (anfds [fd].events)
751	{	984	{
752	anfds [fd].events = 0;	985	anfds [fd].events = 0;
		986	anfds [fd].emask = 0;
753	fd_change (EV_A_ fd, EV_IOFDSET | 1);	987	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
754	}	988	}
755	}	989	}
756		990
757	/*****************************************************************************/	991	/*****************************************************************************/
758		992
759	void inline_speed	993	/*
760	upheap (WT *heap, int k)	994	* the heap functions want a real array index. array index 0 uis guaranteed to not
761	{	995	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
762	WT w = heap [k];	996	* the branching factor of the d-tree.
		997	*/
763		998
764	while (k)	999	/*
765	{	1000	* at the moment we allow libev the luxury of two heaps,
766	int p = (k - 1) >> 1;	1001	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		1002	* which is more cache-efficient.
		1003	* the difference is about 5% with 50000+ watchers.
		1004	*/
		1005	#if EV_USE_4HEAP
767		1006
768	if (heap [p]->at <= w->at)	1007	#define DHEAP 4
		1008	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		1009	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		1010	#define UPHEAP_DONE(p,k) ((p) == (k))
		1011
		1012	/* away from the root */
		1013	inline_speed void
		1014	downheap (ANHE *heap, int N, int k)
		1015	{
		1016	ANHE he = heap [k];
		1017	ANHE *E = heap + N + HEAP0;
		1018
		1019	for (;;)
		1020	{
		1021	ev_tstamp minat;
		1022	ANHE *minpos;
		1023	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
		1024
		1025	/* find minimum child */
		1026	if (expect_true (pos + DHEAP - 1 < E))
		1027	{
		1028	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1029	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1030	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1031	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1032	}
		1033	else if (pos < E)
		1034	{
		1035	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1036	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1037	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1038	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1039	}
		1040	else
769	break;	1041	break;
770		1042
		1043	if (ANHE_at (he) <= minat)
		1044	break;
		1045
		1046	heap [k] = *minpos;
		1047	ev_active (ANHE_w (*minpos)) = k;
		1048
		1049	k = minpos - heap;
		1050	}
		1051
		1052	heap [k] = he;
		1053	ev_active (ANHE_w (he)) = k;
		1054	}
		1055
		1056	#else /* 4HEAP */
		1057
		1058	#define HEAP0 1
		1059	#define HPARENT(k) ((k) >> 1)
		1060	#define UPHEAP_DONE(p,k) (!(p))
		1061
		1062	/* away from the root */
		1063	inline_speed void
		1064	downheap (ANHE *heap, int N, int k)
		1065	{
		1066	ANHE he = heap [k];
		1067
		1068	for (;;)
		1069	{
		1070	int c = k << 1;
		1071
		1072	if (c >= N + HEAP0)
		1073	break;
		1074
		1075	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		1076	? 1 : 0;
		1077
		1078	if (ANHE_at (he) <= ANHE_at (heap [c]))
		1079	break;
		1080
		1081	heap [k] = heap [c];
		1082	ev_active (ANHE_w (heap [k])) = k;
		1083
		1084	k = c;
		1085	}
		1086
		1087	heap [k] = he;
		1088	ev_active (ANHE_w (he)) = k;
		1089	}
		1090	#endif
		1091
		1092	/* towards the root */
		1093	inline_speed void
		1094	upheap (ANHE *heap, int k)
		1095	{
		1096	ANHE he = heap [k];
		1097
		1098	for (;;)
		1099	{
		1100	int p = HPARENT (k);
		1101
		1102	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1103	break;
		1104
771	heap [k] = heap [p];	1105	heap [k] = heap [p];
772	((W)heap [k])->active = k + 1;	1106	ev_active (ANHE_w (heap [k])) = k;
773	k = p;	1107	k = p;
774	}	1108	}
775		1109
776	heap [k] = w;	1110	heap [k] = he;
777	((W)heap [k])->active = k + 1;	1111	ev_active (ANHE_w (he)) = k;
778	}	1112	}
779		1113
780	void inline_speed	1114	/* move an element suitably so it is in a correct place */
781	downheap (WT *heap, int N, int k)	1115	inline_size void
782	{
783	WT w = heap [k];
784
785	for (;;)
786	{
787	int c = (k << 1) + 1;
788
789	if (c >= N)
790	break;
791
792	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
793	? 1 : 0;
794
795	if (w->at <= heap [c]->at)
796	break;
797
798	heap [k] = heap [c];
799	((W)heap [k])->active = k + 1;
800
801	k = c;
802	}
803
804	heap [k] = w;
805	((W)heap [k])->active = k + 1;
806	}
807
808	void inline_size
809	adjustheap (WT *heap, int N, int k)	1116	adjustheap (ANHE *heap, int N, int k)
810	{	1117	{
		1118	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
811	upheap (heap, k);	1119	upheap (heap, k);
		1120	else
812	downheap (heap, N, k);	1121	downheap (heap, N, k);
		1122	}
		1123
		1124	/* rebuild the heap: this function is used only once and executed rarely */
		1125	inline_size void
		1126	reheap (ANHE *heap, int N)
		1127	{
		1128	int i;
		1129
		1130	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1131	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1132	for (i = 0; i < N; ++i)
		1133	upheap (heap, i + HEAP0);
813	}	1134	}
814		1135
815	/*****************************************************************************/	1136	/*****************************************************************************/
816		1137
		1138	/* associate signal watchers to a signal signal */
817	typedef struct	1139	typedef struct
818	{	1140	{
		1141	EV_ATOMIC_T pending;
		1142	#if EV_MULTIPLICITY
		1143	EV_P;
		1144	#endif
819	WL head;	1145	WL head;
820	EV_ATOMIC_T gotsig;
821	} ANSIG;	1146	} ANSIG;
822		1147
823	static ANSIG *signals;	1148	static ANSIG signals [EV_NSIG - 1];
824	static int signalmax;
825
826	static EV_ATOMIC_T gotsig;
827
828	void inline_size
829	signals_init (ANSIG *base, int count)
830	{
831	while (count--)
832	{
833	base->head = 0;
834	base->gotsig = 0;
835
836	++base;
837	}
838	}
839		1149
840	/*****************************************************************************/	1150	/*****************************************************************************/
841		1151
842	void inline_speed	1152	/* used to prepare libev internal fd's */
		1153	/* this is not fork-safe */
		1154	inline_speed void
843	fd_intern (int fd)	1155	fd_intern (int fd)
844	{	1156	{
845	#ifdef _WIN32	1157	#ifdef _WIN32
846	int arg = 1;	1158	unsigned long arg = 1;
847	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1159	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
848	#else	1160	#else
849	fcntl (fd, F_SETFD, FD_CLOEXEC);	1161	fcntl (fd, F_SETFD, FD_CLOEXEC);
850	fcntl (fd, F_SETFL, O_NONBLOCK);	1162	fcntl (fd, F_SETFL, O_NONBLOCK);
851	#endif	1163	#endif
852	}	1164	}
853		1165
854	static void noinline	1166	static void noinline
855	evpipe_init (EV_P)	1167	evpipe_init (EV_P)
856	{	1168	{
857	if (!ev_is_active (&pipeev))	1169	if (!ev_is_active (&pipe_w))
858	{	1170	{
859	#if EV_USE_EVENTFD	1171	#if EV_USE_EVENTFD
		1172	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1173	if (evfd < 0 && errno == EINVAL)
860	if ((evfd = eventfd (0, 0)) >= 0)	1174	evfd = eventfd (0, 0);
		1175
		1176	if (evfd >= 0)
861	{	1177	{
862	evpipe [0] = -1;	1178	evpipe [0] = -1;
863	fd_intern (evfd);	1179	fd_intern (evfd); /* doing it twice doesn't hurt */
864	ev_io_set (&pipeev, evfd, EV_READ);	1180	ev_io_set (&pipe_w, evfd, EV_READ);
865	}	1181	}
866	else	1182	else
867	#endif	1183	#endif
868	{	1184	{
869	while (pipe (evpipe))	1185	while (pipe (evpipe))
870	syserr ("(libev) error creating signal/async pipe");	1186	ev_syserr ("(libev) error creating signal/async pipe");
871		1187
872	fd_intern (evpipe [0]);	1188	fd_intern (evpipe [0]);
873	fd_intern (evpipe [1]);	1189	fd_intern (evpipe [1]);
874	ev_io_set (&pipeev, evpipe [0], EV_READ);	1190	ev_io_set (&pipe_w, evpipe [0], EV_READ);
875	}	1191	}
876		1192
877	ev_io_start (EV_A_ &pipeev);	1193	ev_io_start (EV_A_ &pipe_w);
878	ev_unref (EV_A); /* watcher should not keep loop alive */	1194	ev_unref (EV_A); /* watcher should not keep loop alive */
879	}	1195	}
880	}	1196	}
881		1197
882	void inline_size	1198	inline_size void
883	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1199	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
884	{	1200	{
885	if (!*flag)	1201	if (!*flag)
886	{	1202	{
887	int old_errno = errno; /* save errno because write might clobber it */	1203	int old_errno = errno; /* save errno because write might clobber it */
…		…
900		1216
901	errno = old_errno;	1217	errno = old_errno;
902	}	1218	}
903	}	1219	}
904		1220
		1221	/* called whenever the libev signal pipe */
		1222	/* got some events (signal, async) */
905	static void	1223	static void
906	pipecb (EV_P_ ev_io *iow, int revents)	1224	pipecb (EV_P_ ev_io *iow, int revents)
907	{	1225	{
		1226	int i;
		1227
908	#if EV_USE_EVENTFD	1228	#if EV_USE_EVENTFD
909	if (evfd >= 0)	1229	if (evfd >= 0)
910	{	1230	{
911	uint64_t counter = 1;	1231	uint64_t counter;
912	read (evfd, &counter, sizeof (uint64_t));	1232	read (evfd, &counter, sizeof (uint64_t));
913	}	1233	}
914	else	1234	else
915	#endif	1235	#endif
916	{	1236	{
917	char dummy;	1237	char dummy;
918	read (evpipe [0], &dummy, 1);	1238	read (evpipe [0], &dummy, 1);
919	}	1239	}
920		1240
921	if (gotsig && ev_is_default_loop (EV_A))	1241	if (sig_pending)
922	{	1242	{
923	int signum;	1243	sig_pending = 0;
924	gotsig = 0;
925		1244
926	for (signum = signalmax; signum--; )	1245	for (i = EV_NSIG - 1; i--; )
927	if (signals [signum].gotsig)	1246	if (expect_false (signals [i].pending))
928	ev_feed_signal_event (EV_A_ signum + 1);	1247	ev_feed_signal_event (EV_A_ i + 1);
929	}	1248	}
930		1249
931	#if EV_ASYNC_ENABLE	1250	#if EV_ASYNC_ENABLE
932	if (gotasync)	1251	if (async_pending)
933	{	1252	{
934	int i;	1253	async_pending = 0;
935	gotasync = 0;
936		1254
937	for (i = asynccnt; i--; )	1255	for (i = asynccnt; i--; )
938	if (asyncs [i]->sent)	1256	if (asyncs [i]->sent)
939	{	1257	{
940	asyncs [i]->sent = 0;	1258	asyncs [i]->sent = 0;
…		…
948		1266
949	static void	1267	static void
950	ev_sighandler (int signum)	1268	ev_sighandler (int signum)
951	{	1269	{
952	#if EV_MULTIPLICITY	1270	#if EV_MULTIPLICITY
953	struct ev_loop *loop = &default_loop_struct;	1271	EV_P = signals [signum - 1].loop;
954	#endif	1272	#endif
955		1273
956	#if _WIN32	1274	#if _WIN32
957	signal (signum, ev_sighandler);	1275	signal (signum, ev_sighandler);
958	#endif	1276	#endif
959		1277
960	signals [signum - 1].gotsig = 1;	1278	signals [signum - 1].pending = 1;
961	evpipe_write (EV_A_ &gotsig);	1279	evpipe_write (EV_A_ &sig_pending);
962	}	1280	}
963		1281
964	void noinline	1282	void noinline
965	ev_feed_signal_event (EV_P_ int signum)	1283	ev_feed_signal_event (EV_P_ int signum)
966	{	1284	{
967	WL w;	1285	WL w;
968		1286
		1287	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1288	return;
		1289
		1290	--signum;
		1291
969	#if EV_MULTIPLICITY	1292	#if EV_MULTIPLICITY
970	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1293	/* it is permissible to try to feed a signal to the wrong loop */
971	#endif	1294	/* or, likely more useful, feeding a signal nobody is waiting for */
972		1295
973	--signum;	1296	if (expect_false (signals [signum].loop != EV_A))
974
975	if (signum < 0 || signum >= signalmax)
976	return;	1297	return;
		1298	#endif
977		1299
978	signals [signum].gotsig = 0;	1300	signals [signum].pending = 0;
979		1301
980	for (w = signals [signum].head; w; w = w->next)	1302	for (w = signals [signum].head; w; w = w->next)
981	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1303	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
982	}	1304	}
983		1305
		1306	#if EV_USE_SIGNALFD
		1307	static void
		1308	sigfdcb (EV_P_ ev_io *iow, int revents)
		1309	{
		1310	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1311
		1312	for (;;)
		1313	{
		1314	ssize_t res = read (sigfd, si, sizeof (si));
		1315
		1316	/* not ISO-C, as res might be -1, but works with SuS */
		1317	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1318	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1319
		1320	if (res < (ssize_t)sizeof (si))
		1321	break;
		1322	}
		1323	}
		1324	#endif
		1325
984	/*****************************************************************************/	1326	/*****************************************************************************/
985		1327
986	static WL childs [EV_PID_HASHSIZE];	1328	static WL childs [EV_PID_HASHSIZE];
987		1329
988	#ifndef _WIN32	1330	#ifndef _WIN32
…		…
991		1333
992	#ifndef WIFCONTINUED	1334	#ifndef WIFCONTINUED
993	# define WIFCONTINUED(status) 0	1335	# define WIFCONTINUED(status) 0
994	#endif	1336	#endif
995		1337
996	void inline_speed	1338	/* handle a single child status event */
		1339	inline_speed void
997	child_reap (EV_P_ int chain, int pid, int status)	1340	child_reap (EV_P_ int chain, int pid, int status)
998	{	1341	{
999	ev_child *w;	1342	ev_child *w;
1000	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1343	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1001		1344
…		…
1014		1357
1015	#ifndef WCONTINUED	1358	#ifndef WCONTINUED
1016	# define WCONTINUED 0	1359	# define WCONTINUED 0
1017	#endif	1360	#endif
1018		1361
		1362	/* called on sigchld etc., calls waitpid */
1019	static void	1363	static void
1020	childcb (EV_P_ ev_signal *sw, int revents)	1364	childcb (EV_P_ ev_signal *sw, int revents)
1021	{	1365	{
1022	int pid, status;	1366	int pid, status;
1023		1367
…		…
1104	/* kqueue is borked on everything but netbsd apparently */	1448	/* kqueue is borked on everything but netbsd apparently */
1105	/* it usually doesn't work correctly on anything but sockets and pipes */	1449	/* it usually doesn't work correctly on anything but sockets and pipes */
1106	flags &= ~EVBACKEND_KQUEUE;	1450	flags &= ~EVBACKEND_KQUEUE;
1107	#endif	1451	#endif
1108	#ifdef __APPLE__	1452	#ifdef __APPLE__
1109	// flags &= ~EVBACKEND_KQUEUE; for documentation	1453	/* only select works correctly on that "unix-certified" platform */
1110	flags &= ~EVBACKEND_POLL;	1454	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1455	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1111	#endif	1456	#endif
1112		1457
1113	return flags;	1458	return flags;
1114	}	1459	}
1115		1460
…		…
1129	ev_backend (EV_P)	1474	ev_backend (EV_P)
1130	{	1475	{
1131	return backend;	1476	return backend;
1132	}	1477	}
1133		1478
		1479	#if EV_MINIMAL < 2
1134	unsigned int	1480	unsigned int
1135	ev_loop_count (EV_P)	1481	ev_loop_count (EV_P)
1136	{	1482	{
1137	return loop_count;	1483	return loop_count;
1138	}	1484	}
1139		1485
		1486	unsigned int
		1487	ev_loop_depth (EV_P)
		1488	{
		1489	return loop_depth;
		1490	}
		1491
1140	void	1492	void
1141	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1493	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1142	{	1494	{
1143	io_blocktime = interval;	1495	io_blocktime = interval;
1144	}	1496	}
…		…
1147	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1499	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1148	{	1500	{
1149	timeout_blocktime = interval;	1501	timeout_blocktime = interval;
1150	}	1502	}
1151		1503
		1504	void
		1505	ev_set_userdata (EV_P_ void *data)
		1506	{
		1507	userdata = data;
		1508	}
		1509
		1510	void *
		1511	ev_userdata (EV_P)
		1512	{
		1513	return userdata;
		1514	}
		1515
		1516	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1517	{
		1518	invoke_cb = invoke_pending_cb;
		1519	}
		1520
		1521	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1522	{
		1523	release_cb = release;
		1524	acquire_cb = acquire;
		1525	}
		1526	#endif
		1527
		1528	/* initialise a loop structure, must be zero-initialised */
1152	static void noinline	1529	static void noinline
1153	loop_init (EV_P_ unsigned int flags)	1530	loop_init (EV_P_ unsigned int flags)
1154	{	1531	{
1155	if (!backend)	1532	if (!backend)
1156	{	1533	{
		1534	#if EV_USE_REALTIME
		1535	if (!have_realtime)
		1536	{
		1537	struct timespec ts;
		1538
		1539	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1540	have_realtime = 1;
		1541	}
		1542	#endif
		1543
1157	#if EV_USE_MONOTONIC	1544	#if EV_USE_MONOTONIC
		1545	if (!have_monotonic)
1158	{	1546	{
1159	struct timespec ts;	1547	struct timespec ts;
		1548
1160	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1549	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1161	have_monotonic = 1;	1550	have_monotonic = 1;
1162	}	1551	}
1163	#endif	1552	#endif
		1553
		1554	/* pid check not overridable via env */
		1555	#ifndef _WIN32
		1556	if (flags & EVFLAG_FORKCHECK)
		1557	curpid = getpid ();
		1558	#endif
		1559
		1560	if (!(flags & EVFLAG_NOENV)
		1561	&& !enable_secure ()
		1562	&& getenv ("LIBEV_FLAGS"))
		1563	flags = atoi (getenv ("LIBEV_FLAGS"));
1164		1564
1165	ev_rt_now = ev_time ();	1565	ev_rt_now = ev_time ();
1166	mn_now = get_clock ();	1566	mn_now = get_clock ();
1167	now_floor = mn_now;	1567	now_floor = mn_now;
1168	rtmn_diff = ev_rt_now - mn_now;	1568	rtmn_diff = ev_rt_now - mn_now;
		1569	#if EV_MINIMAL < 2
		1570	invoke_cb = ev_invoke_pending;
		1571	#endif
1169		1572
1170	io_blocktime = 0.;	1573	io_blocktime = 0.;
1171	timeout_blocktime = 0.;	1574	timeout_blocktime = 0.;
1172	backend = 0;	1575	backend = 0;
1173	backend_fd = -1;	1576	backend_fd = -1;
1174	gotasync = 0;	1577	sig_pending = 0;
		1578	#if EV_ASYNC_ENABLE
		1579	async_pending = 0;
		1580	#endif
1175	#if EV_USE_INOTIFY	1581	#if EV_USE_INOTIFY
1176	fs_fd = -2;	1582	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1177	#endif	1583	#endif
1178		1584	#if EV_USE_SIGNALFD
1179	/* pid check not overridable via env */	1585	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1180	#ifndef _WIN32
1181	if (flags & EVFLAG_FORKCHECK)
1182	curpid = getpid ();
1183	#endif	1586	#endif
1184		1587
1185	if (!(flags & EVFLAG_NOENV)
1186	&& !enable_secure ()
1187	&& getenv ("LIBEV_FLAGS"))
1188	flags = atoi (getenv ("LIBEV_FLAGS"));
1189
1190	if (!(flags & 0x0000ffffUL))	1588	if (!(flags & 0x0000ffffU))
1191	flags |= ev_recommended_backends ();	1589	flags |= ev_recommended_backends ();
1192		1590
1193	#if EV_USE_PORT	1591	#if EV_USE_PORT
1194	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1592	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1195	#endif	1593	#endif
…		…
1204	#endif	1602	#endif
1205	#if EV_USE_SELECT	1603	#if EV_USE_SELECT
1206	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1604	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1207	#endif	1605	#endif
1208		1606
		1607	ev_prepare_init (&pending_w, pendingcb);
		1608
1209	ev_init (&pipeev, pipecb);	1609	ev_init (&pipe_w, pipecb);
1210	ev_set_priority (&pipeev, EV_MAXPRI);	1610	ev_set_priority (&pipe_w, EV_MAXPRI);
1211	}	1611	}
1212	}	1612	}
1213		1613
		1614	/* free up a loop structure */
1214	static void noinline	1615	static void noinline
1215	loop_destroy (EV_P)	1616	loop_destroy (EV_P)
1216	{	1617	{
1217	int i;	1618	int i;
1218		1619
1219	if (ev_is_active (&pipeev))	1620	if (ev_is_active (&pipe_w))
1220	{	1621	{
1221	ev_ref (EV_A); /* signal watcher */	1622	/*ev_ref (EV_A);*/
1222	ev_io_stop (EV_A_ &pipeev);	1623	/*ev_io_stop (EV_A_ &pipe_w);*/
1223		1624
1224	#if EV_USE_EVENTFD	1625	#if EV_USE_EVENTFD
1225	if (evfd >= 0)	1626	if (evfd >= 0)
1226	close (evfd);	1627	close (evfd);
1227	#endif	1628	#endif
1228		1629
1229	if (evpipe [0] >= 0)	1630	if (evpipe [0] >= 0)
1230	{	1631	{
1231	close (evpipe [0]);	1632	EV_WIN32_CLOSE_FD (evpipe [0]);
1232	close (evpipe [1]);	1633	EV_WIN32_CLOSE_FD (evpipe [1]);
1233	}	1634	}
1234	}	1635	}
		1636
		1637	#if EV_USE_SIGNALFD
		1638	if (ev_is_active (&sigfd_w))
		1639	{
		1640	/*ev_ref (EV_A);*/
		1641	/*ev_io_stop (EV_A_ &sigfd_w);*/
		1642
		1643	close (sigfd);
		1644	}
		1645	#endif
1235		1646
1236	#if EV_USE_INOTIFY	1647	#if EV_USE_INOTIFY
1237	if (fs_fd >= 0)	1648	if (fs_fd >= 0)
1238	close (fs_fd);	1649	close (fs_fd);
1239	#endif	1650	#endif
…		…
1263	#if EV_IDLE_ENABLE	1674	#if EV_IDLE_ENABLE
1264	array_free (idle, [i]);	1675	array_free (idle, [i]);
1265	#endif	1676	#endif
1266	}	1677	}
1267		1678
1268	ev_free (anfds); anfdmax = 0;	1679	ev_free (anfds); anfds = 0; anfdmax = 0;
1269		1680
1270	/* have to use the microsoft-never-gets-it-right macro */	1681	/* have to use the microsoft-never-gets-it-right macro */
		1682	array_free (rfeed, EMPTY);
1271	array_free (fdchange, EMPTY);	1683	array_free (fdchange, EMPTY);
1272	array_free (timer, EMPTY);	1684	array_free (timer, EMPTY);
1273	#if EV_PERIODIC_ENABLE	1685	#if EV_PERIODIC_ENABLE
1274	array_free (periodic, EMPTY);	1686	array_free (periodic, EMPTY);
1275	#endif	1687	#endif
…		…
1283	#endif	1695	#endif
1284		1696
1285	backend = 0;	1697	backend = 0;
1286	}	1698	}
1287		1699
		1700	#if EV_USE_INOTIFY
1288	void inline_size infy_fork (EV_P);	1701	inline_size void infy_fork (EV_P);
		1702	#endif
1289		1703
1290	void inline_size	1704	inline_size void
1291	loop_fork (EV_P)	1705	loop_fork (EV_P)
1292	{	1706	{
1293	#if EV_USE_PORT	1707	#if EV_USE_PORT
1294	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1708	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1295	#endif	1709	#endif
…		…
1301	#endif	1715	#endif
1302	#if EV_USE_INOTIFY	1716	#if EV_USE_INOTIFY
1303	infy_fork (EV_A);	1717	infy_fork (EV_A);
1304	#endif	1718	#endif
1305		1719
1306	if (ev_is_active (&pipeev))	1720	if (ev_is_active (&pipe_w))
1307	{	1721	{
1308	/* this "locks" the handlers against writing to the pipe */	1722	/* this "locks" the handlers against writing to the pipe */
1309	/* while we modify the fd vars */	1723	/* while we modify the fd vars */
1310	gotsig = 1;	1724	sig_pending = 1;
1311	#if EV_ASYNC_ENABLE	1725	#if EV_ASYNC_ENABLE
1312	gotasync = 1;	1726	async_pending = 1;
1313	#endif	1727	#endif
1314		1728
1315	ev_ref (EV_A);	1729	ev_ref (EV_A);
1316	ev_io_stop (EV_A_ &pipeev);	1730	ev_io_stop (EV_A_ &pipe_w);
1317		1731
1318	#if EV_USE_EVENTFD	1732	#if EV_USE_EVENTFD
1319	if (evfd >= 0)	1733	if (evfd >= 0)
1320	close (evfd);	1734	close (evfd);
1321	#endif	1735	#endif
1322		1736
1323	if (evpipe [0] >= 0)	1737	if (evpipe [0] >= 0)
1324	{	1738	{
1325	close (evpipe [0]);	1739	EV_WIN32_CLOSE_FD (evpipe [0]);
1326	close (evpipe [1]);	1740	EV_WIN32_CLOSE_FD (evpipe [1]);
1327	}	1741	}
1328		1742
1329	evpipe_init (EV_A);	1743	evpipe_init (EV_A);
1330	/* now iterate over everything, in case we missed something */	1744	/* now iterate over everything, in case we missed something */
1331	pipecb (EV_A_ &pipeev, EV_READ);	1745	pipecb (EV_A_ &pipe_w, EV_READ);
1332	}	1746	}
1333		1747
1334	postfork = 0;	1748	postfork = 0;
1335	}	1749	}
1336		1750
1337	#if EV_MULTIPLICITY	1751	#if EV_MULTIPLICITY
		1752
1338	struct ev_loop *	1753	struct ev_loop *
1339	ev_loop_new (unsigned int flags)	1754	ev_loop_new (unsigned int flags)
1340	{	1755	{
1341	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1756	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1342		1757
1343	memset (loop, 0, sizeof (struct ev_loop));	1758	memset (EV_A, 0, sizeof (struct ev_loop));
1344
1345	loop_init (EV_A_ flags);	1759	loop_init (EV_A_ flags);
1346		1760
1347	if (ev_backend (EV_A))	1761	if (ev_backend (EV_A))
1348	return loop;	1762	return EV_A;
1349		1763
1350	return 0;	1764	return 0;
1351	}	1765	}
1352		1766
1353	void	1767	void
…		…
1360	void	1774	void
1361	ev_loop_fork (EV_P)	1775	ev_loop_fork (EV_P)
1362	{	1776	{
1363	postfork = 1; /* must be in line with ev_default_fork */	1777	postfork = 1; /* must be in line with ev_default_fork */
1364	}	1778	}
		1779	#endif /* multiplicity */
1365		1780
		1781	#if EV_VERIFY
		1782	static void noinline
		1783	verify_watcher (EV_P_ W w)
		1784	{
		1785	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1786
		1787	if (w->pending)
		1788	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1789	}
		1790
		1791	static void noinline
		1792	verify_heap (EV_P_ ANHE *heap, int N)
		1793	{
		1794	int i;
		1795
		1796	for (i = HEAP0; i < N + HEAP0; ++i)
		1797	{
		1798	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1799	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1800	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1801
		1802	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1803	}
		1804	}
		1805
		1806	static void noinline
		1807	array_verify (EV_P_ W *ws, int cnt)
		1808	{
		1809	while (cnt--)
		1810	{
		1811	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1812	verify_watcher (EV_A_ ws [cnt]);
		1813	}
		1814	}
		1815	#endif
		1816
		1817	#if EV_MINIMAL < 2
		1818	void
		1819	ev_loop_verify (EV_P)
		1820	{
		1821	#if EV_VERIFY
		1822	int i;
		1823	WL w;
		1824
		1825	assert (activecnt >= -1);
		1826
		1827	assert (fdchangemax >= fdchangecnt);
		1828	for (i = 0; i < fdchangecnt; ++i)
		1829	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1830
		1831	assert (anfdmax >= 0);
		1832	for (i = 0; i < anfdmax; ++i)
		1833	for (w = anfds [i].head; w; w = w->next)
		1834	{
		1835	verify_watcher (EV_A_ (W)w);
		1836	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1837	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1838	}
		1839
		1840	assert (timermax >= timercnt);
		1841	verify_heap (EV_A_ timers, timercnt);
		1842
		1843	#if EV_PERIODIC_ENABLE
		1844	assert (periodicmax >= periodiccnt);
		1845	verify_heap (EV_A_ periodics, periodiccnt);
		1846	#endif
		1847
		1848	for (i = NUMPRI; i--; )
		1849	{
		1850	assert (pendingmax [i] >= pendingcnt [i]);
		1851	#if EV_IDLE_ENABLE
		1852	assert (idleall >= 0);
		1853	assert (idlemax [i] >= idlecnt [i]);
		1854	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1855	#endif
		1856	}
		1857
		1858	#if EV_FORK_ENABLE
		1859	assert (forkmax >= forkcnt);
		1860	array_verify (EV_A_ (W *)forks, forkcnt);
		1861	#endif
		1862
		1863	#if EV_ASYNC_ENABLE
		1864	assert (asyncmax >= asynccnt);
		1865	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1866	#endif
		1867
		1868	assert (preparemax >= preparecnt);
		1869	array_verify (EV_A_ (W *)prepares, preparecnt);
		1870
		1871	assert (checkmax >= checkcnt);
		1872	array_verify (EV_A_ (W *)checks, checkcnt);
		1873
		1874	# if 0
		1875	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1876	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		1877	# endif
		1878	#endif
		1879	}
1366	#endif	1880	#endif
1367		1881
1368	#if EV_MULTIPLICITY	1882	#if EV_MULTIPLICITY
1369	struct ev_loop *	1883	struct ev_loop *
1370	ev_default_loop_init (unsigned int flags)	1884	ev_default_loop_init (unsigned int flags)
…		…
1374	#endif	1888	#endif
1375	{	1889	{
1376	if (!ev_default_loop_ptr)	1890	if (!ev_default_loop_ptr)
1377	{	1891	{
1378	#if EV_MULTIPLICITY	1892	#if EV_MULTIPLICITY
1379	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1893	EV_P = ev_default_loop_ptr = &default_loop_struct;
1380	#else	1894	#else
1381	ev_default_loop_ptr = 1;	1895	ev_default_loop_ptr = 1;
1382	#endif	1896	#endif
1383		1897
1384	loop_init (EV_A_ flags);	1898	loop_init (EV_A_ flags);
…		…
1401		1915
1402	void	1916	void
1403	ev_default_destroy (void)	1917	ev_default_destroy (void)
1404	{	1918	{
1405	#if EV_MULTIPLICITY	1919	#if EV_MULTIPLICITY
1406	struct ev_loop *loop = ev_default_loop_ptr;	1920	EV_P = ev_default_loop_ptr;
1407	#endif	1921	#endif
		1922
		1923	ev_default_loop_ptr = 0;
1408		1924
1409	#ifndef _WIN32	1925	#ifndef _WIN32
1410	ev_ref (EV_A); /* child watcher */	1926	ev_ref (EV_A); /* child watcher */
1411	ev_signal_stop (EV_A_ &childev);	1927	ev_signal_stop (EV_A_ &childev);
1412	#endif	1928	#endif
…		…
1416		1932
1417	void	1933	void
1418	ev_default_fork (void)	1934	ev_default_fork (void)
1419	{	1935	{
1420	#if EV_MULTIPLICITY	1936	#if EV_MULTIPLICITY
1421	struct ev_loop *loop = ev_default_loop_ptr;	1937	EV_P = ev_default_loop_ptr;
1422	#endif	1938	#endif
1423		1939
1424	if (backend)
1425	postfork = 1; /* must be in line with ev_loop_fork */	1940	postfork = 1; /* must be in line with ev_loop_fork */
1426	}	1941	}
1427		1942
1428	/*****************************************************************************/	1943	/*****************************************************************************/
1429		1944
1430	void	1945	void
1431	ev_invoke (EV_P_ void *w, int revents)	1946	ev_invoke (EV_P_ void *w, int revents)
1432	{	1947	{
1433	EV_CB_INVOKE ((W)w, revents);	1948	EV_CB_INVOKE ((W)w, revents);
1434	}	1949	}
1435		1950
1436	void inline_speed	1951	unsigned int
1437	call_pending (EV_P)	1952	ev_pending_count (EV_P)
		1953	{
		1954	int pri;
		1955	unsigned int count = 0;
		1956
		1957	for (pri = NUMPRI; pri--; )
		1958	count += pendingcnt [pri];
		1959
		1960	return count;
		1961	}
		1962
		1963	void noinline
		1964	ev_invoke_pending (EV_P)
1438	{	1965	{
1439	int pri;	1966	int pri;
1440		1967
1441	for (pri = NUMPRI; pri--; )	1968	for (pri = NUMPRI; pri--; )
1442	while (pendingcnt [pri])	1969	while (pendingcnt [pri])
1443	{	1970	{
1444	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1971	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1445		1972
1446	if (expect_true (p->w))
1447	{
1448	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1973	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1974	/* ^ this is no longer true, as pending_w could be here */
1449		1975
1450	p->w->pending = 0;	1976	p->w->pending = 0;
1451	EV_CB_INVOKE (p->w, p->events);	1977	EV_CB_INVOKE (p->w, p->events);
1452	}	1978	EV_FREQUENT_CHECK;
1453	}	1979	}
1454	}	1980	}
1455		1981
1456	void inline_size
1457	timers_reify (EV_P)
1458	{
1459	while (timercnt && ((WT)timers [0])->at <= mn_now)
1460	{
1461	ev_timer *w = (ev_timer *)timers [0];
1462
1463	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1464
1465	/* first reschedule or stop timer */
1466	if (w->repeat)
1467	{
1468	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1469
1470	((WT)w)->at += w->repeat;
1471	if (((WT)w)->at < mn_now)
1472	((WT)w)->at = mn_now;
1473
1474	downheap (timers, timercnt, 0);
1475	}
1476	else
1477	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1478
1479	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1480	}
1481	}
1482
1483	#if EV_PERIODIC_ENABLE
1484	void inline_size
1485	periodics_reify (EV_P)
1486	{
1487	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1488	{
1489	ev_periodic *w = (ev_periodic *)periodics [0];
1490
1491	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1492
1493	/* first reschedule or stop timer */
1494	if (w->reschedule_cb)
1495	{
1496	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1497	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1498	downheap (periodics, periodiccnt, 0);
1499	}
1500	else if (w->interval)
1501	{
1502	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1503	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1504	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1505	downheap (periodics, periodiccnt, 0);
1506	}
1507	else
1508	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1509
1510	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1511	}
1512	}
1513
1514	static void noinline
1515	periodics_reschedule (EV_P)
1516	{
1517	int i;
1518
1519	/* adjust periodics after time jump */
1520	for (i = 0; i < periodiccnt; ++i)
1521	{
1522	ev_periodic *w = (ev_periodic *)periodics [i];
1523
1524	if (w->reschedule_cb)
1525	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1526	else if (w->interval)
1527	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1528	}
1529
1530	/* now rebuild the heap */
1531	for (i = periodiccnt >> 1; i--; )
1532	downheap (periodics, periodiccnt, i);
1533	}
1534	#endif
1535
1536	#if EV_IDLE_ENABLE	1982	#if EV_IDLE_ENABLE
1537	void inline_size	1983	/* make idle watchers pending. this handles the "call-idle */
		1984	/* only when higher priorities are idle" logic */
		1985	inline_size void
1538	idle_reify (EV_P)	1986	idle_reify (EV_P)
1539	{	1987	{
1540	if (expect_false (idleall))	1988	if (expect_false (idleall))
1541	{	1989	{
1542	int pri;	1990	int pri;
…		…
1554	}	2002	}
1555	}	2003	}
1556	}	2004	}
1557	#endif	2005	#endif
1558		2006
1559	void inline_speed	2007	/* make timers pending */
		2008	inline_size void
		2009	timers_reify (EV_P)
		2010	{
		2011	EV_FREQUENT_CHECK;
		2012
		2013	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		2014	{
		2015	do
		2016	{
		2017	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2018
		2019	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2020
		2021	/* first reschedule or stop timer */
		2022	if (w->repeat)
		2023	{
		2024	ev_at (w) += w->repeat;
		2025	if (ev_at (w) < mn_now)
		2026	ev_at (w) = mn_now;
		2027
		2028	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		2029
		2030	ANHE_at_cache (timers [HEAP0]);
		2031	downheap (timers, timercnt, HEAP0);
		2032	}
		2033	else
		2034	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2035
		2036	EV_FREQUENT_CHECK;
		2037	feed_reverse (EV_A_ (W)w);
		2038	}
		2039	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
		2040
		2041	feed_reverse_done (EV_A_ EV_TIMEOUT);
		2042	}
		2043	}
		2044
		2045	#if EV_PERIODIC_ENABLE
		2046	/* make periodics pending */
		2047	inline_size void
		2048	periodics_reify (EV_P)
		2049	{
		2050	EV_FREQUENT_CHECK;
		2051
		2052	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		2053	{
		2054	int feed_count = 0;
		2055
		2056	do
		2057	{
		2058	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2059
		2060	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2061
		2062	/* first reschedule or stop timer */
		2063	if (w->reschedule_cb)
		2064	{
		2065	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2066
		2067	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		2068
		2069	ANHE_at_cache (periodics [HEAP0]);
		2070	downheap (periodics, periodiccnt, HEAP0);
		2071	}
		2072	else if (w->interval)
		2073	{
		2074	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2075	/* if next trigger time is not sufficiently in the future, put it there */
		2076	/* this might happen because of floating point inexactness */
		2077	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2078	{
		2079	ev_at (w) += w->interval;
		2080
		2081	/* if interval is unreasonably low we might still have a time in the past */
		2082	/* so correct this. this will make the periodic very inexact, but the user */
		2083	/* has effectively asked to get triggered more often than possible */
		2084	if (ev_at (w) < ev_rt_now)
		2085	ev_at (w) = ev_rt_now;
		2086	}
		2087
		2088	ANHE_at_cache (periodics [HEAP0]);
		2089	downheap (periodics, periodiccnt, HEAP0);
		2090	}
		2091	else
		2092	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2093
		2094	EV_FREQUENT_CHECK;
		2095	feed_reverse (EV_A_ (W)w);
		2096	}
		2097	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
		2098
		2099	feed_reverse_done (EV_A_ EV_PERIODIC);
		2100	}
		2101	}
		2102
		2103	/* simply recalculate all periodics */
		2104	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
		2105	static void noinline
		2106	periodics_reschedule (EV_P)
		2107	{
		2108	int i;
		2109
		2110	/* adjust periodics after time jump */
		2111	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		2112	{
		2113	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		2114
		2115	if (w->reschedule_cb)
		2116	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2117	else if (w->interval)
		2118	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2119
		2120	ANHE_at_cache (periodics [i]);
		2121	}
		2122
		2123	reheap (periodics, periodiccnt);
		2124	}
		2125	#endif
		2126
		2127	/* adjust all timers by a given offset */
		2128	static void noinline
		2129	timers_reschedule (EV_P_ ev_tstamp adjust)
		2130	{
		2131	int i;
		2132
		2133	for (i = 0; i < timercnt; ++i)
		2134	{
		2135	ANHE *he = timers + i + HEAP0;
		2136	ANHE_w (*he)->at += adjust;
		2137	ANHE_at_cache (*he);
		2138	}
		2139	}
		2140
		2141	/* fetch new monotonic and realtime times from the kernel */
		2142	/* also detetc if there was a timejump, and act accordingly */
		2143	inline_speed void
1560	time_update (EV_P_ ev_tstamp max_block)	2144	time_update (EV_P_ ev_tstamp max_block)
1561	{	2145	{
1562	int i;
1563
1564	#if EV_USE_MONOTONIC	2146	#if EV_USE_MONOTONIC
1565	if (expect_true (have_monotonic))	2147	if (expect_true (have_monotonic))
1566	{	2148	{
		2149	int i;
1567	ev_tstamp odiff = rtmn_diff;	2150	ev_tstamp odiff = rtmn_diff;
1568		2151
1569	mn_now = get_clock ();	2152	mn_now = get_clock ();
1570		2153
1571	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2154	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1589	*/	2172	*/
1590	for (i = 4; --i; )	2173	for (i = 4; --i; )
1591	{	2174	{
1592	rtmn_diff = ev_rt_now - mn_now;	2175	rtmn_diff = ev_rt_now - mn_now;
1593		2176
1594	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	2177	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1595	return; /* all is well */	2178	return; /* all is well */
1596		2179
1597	ev_rt_now = ev_time ();	2180	ev_rt_now = ev_time ();
1598	mn_now = get_clock ();	2181	mn_now = get_clock ();
1599	now_floor = mn_now;	2182	now_floor = mn_now;
1600	}	2183	}
1601		2184
		2185	/* no timer adjustment, as the monotonic clock doesn't jump */
		2186	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1602	# if EV_PERIODIC_ENABLE	2187	# if EV_PERIODIC_ENABLE
1603	periodics_reschedule (EV_A);	2188	periodics_reschedule (EV_A);
1604	# endif	2189	# endif
1605	/* no timer adjustment, as the monotonic clock doesn't jump */
1606	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1607	}	2190	}
1608	else	2191	else
1609	#endif	2192	#endif
1610	{	2193	{
1611	ev_rt_now = ev_time ();	2194	ev_rt_now = ev_time ();
1612		2195
1613	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2196	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1614	{	2197	{
		2198	/* adjust timers. this is easy, as the offset is the same for all of them */
		2199	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1615	#if EV_PERIODIC_ENABLE	2200	#if EV_PERIODIC_ENABLE
1616	periodics_reschedule (EV_A);	2201	periodics_reschedule (EV_A);
1617	#endif	2202	#endif
1618	/* adjust timers. this is easy, as the offset is the same for all of them */
1619	for (i = 0; i < timercnt; ++i)
1620	((WT)timers [i])->at += ev_rt_now - mn_now;
1621	}	2203	}
1622		2204
1623	mn_now = ev_rt_now;	2205	mn_now = ev_rt_now;
1624	}	2206	}
1625	}	2207	}
1626		2208
1627	void	2209	void
1628	ev_ref (EV_P)
1629	{
1630	++activecnt;
1631	}
1632
1633	void
1634	ev_unref (EV_P)
1635	{
1636	--activecnt;
1637	}
1638
1639	static int loop_done;
1640
1641	void
1642	ev_loop (EV_P_ int flags)	2210	ev_loop (EV_P_ int flags)
1643	{	2211	{
		2212	#if EV_MINIMAL < 2
		2213	++loop_depth;
		2214	#endif
		2215
		2216	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2217
1644	loop_done = EVUNLOOP_CANCEL;	2218	loop_done = EVUNLOOP_CANCEL;
1645		2219
1646	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2220	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1647		2221
1648	do	2222	do
1649	{	2223	{
		2224	#if EV_VERIFY >= 2
		2225	ev_loop_verify (EV_A);
		2226	#endif
		2227
1650	#ifndef _WIN32	2228	#ifndef _WIN32
1651	if (expect_false (curpid)) /* penalise the forking check even more */	2229	if (expect_false (curpid)) /* penalise the forking check even more */
1652	if (expect_false (getpid () != curpid))	2230	if (expect_false (getpid () != curpid))
1653	{	2231	{
1654	curpid = getpid ();	2232	curpid = getpid ();
…		…
1660	/* we might have forked, so queue fork handlers */	2238	/* we might have forked, so queue fork handlers */
1661	if (expect_false (postfork))	2239	if (expect_false (postfork))
1662	if (forkcnt)	2240	if (forkcnt)
1663	{	2241	{
1664	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2242	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1665	call_pending (EV_A);	2243	EV_INVOKE_PENDING;
1666	}	2244	}
1667	#endif	2245	#endif
1668		2246
1669	/* queue prepare watchers (and execute them) */	2247	/* queue prepare watchers (and execute them) */
1670	if (expect_false (preparecnt))	2248	if (expect_false (preparecnt))
1671	{	2249	{
1672	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2250	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1673	call_pending (EV_A);	2251	EV_INVOKE_PENDING;
1674	}	2252	}
1675		2253
1676	if (expect_false (!activecnt))	2254	if (expect_false (loop_done))
1677	break;	2255	break;
1678		2256
1679	/* we might have forked, so reify kernel state if necessary */	2257	/* we might have forked, so reify kernel state if necessary */
1680	if (expect_false (postfork))	2258	if (expect_false (postfork))
1681	loop_fork (EV_A);	2259	loop_fork (EV_A);
…		…
1688	ev_tstamp waittime = 0.;	2266	ev_tstamp waittime = 0.;
1689	ev_tstamp sleeptime = 0.;	2267	ev_tstamp sleeptime = 0.;
1690		2268
1691	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2269	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1692	{	2270	{
		2271	/* remember old timestamp for io_blocktime calculation */
		2272	ev_tstamp prev_mn_now = mn_now;
		2273
1693	/* update time to cancel out callback processing overhead */	2274	/* update time to cancel out callback processing overhead */
1694	time_update (EV_A_ 1e100);	2275	time_update (EV_A_ 1e100);
1695		2276
1696	waittime = MAX_BLOCKTIME;	2277	waittime = MAX_BLOCKTIME;
1697		2278
1698	if (timercnt)	2279	if (timercnt)
1699	{	2280	{
1700	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	2281	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1701	if (waittime > to) waittime = to;	2282	if (waittime > to) waittime = to;
1702	}	2283	}
1703		2284
1704	#if EV_PERIODIC_ENABLE	2285	#if EV_PERIODIC_ENABLE
1705	if (periodiccnt)	2286	if (periodiccnt)
1706	{	2287	{
1707	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	2288	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1708	if (waittime > to) waittime = to;	2289	if (waittime > to) waittime = to;
1709	}	2290	}
1710	#endif	2291	#endif
1711		2292
		2293	/* don't let timeouts decrease the waittime below timeout_blocktime */
1712	if (expect_false (waittime < timeout_blocktime))	2294	if (expect_false (waittime < timeout_blocktime))
1713	waittime = timeout_blocktime;	2295	waittime = timeout_blocktime;
1714		2296
1715	sleeptime = waittime - backend_fudge;	2297	/* extra check because io_blocktime is commonly 0 */
1716
1717	if (expect_true (sleeptime > io_blocktime))	2298	if (expect_false (io_blocktime))
1718	sleeptime = io_blocktime;
1719
1720	if (sleeptime)
1721	{	2299	{
		2300	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2301
		2302	if (sleeptime > waittime - backend_fudge)
		2303	sleeptime = waittime - backend_fudge;
		2304
		2305	if (expect_true (sleeptime > 0.))
		2306	{
1722	ev_sleep (sleeptime);	2307	ev_sleep (sleeptime);
1723	waittime -= sleeptime;	2308	waittime -= sleeptime;
		2309	}
1724	}	2310	}
1725	}	2311	}
1726		2312
		2313	#if EV_MINIMAL < 2
1727	++loop_count;	2314	++loop_count;
		2315	#endif
		2316	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1728	backend_poll (EV_A_ waittime);	2317	backend_poll (EV_A_ waittime);
		2318	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1729		2319
1730	/* update ev_rt_now, do magic */	2320	/* update ev_rt_now, do magic */
1731	time_update (EV_A_ waittime + sleeptime);	2321	time_update (EV_A_ waittime + sleeptime);
1732	}	2322	}
1733		2323
…		…
1744		2334
1745	/* queue check watchers, to be executed first */	2335	/* queue check watchers, to be executed first */
1746	if (expect_false (checkcnt))	2336	if (expect_false (checkcnt))
1747	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2337	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1748		2338
1749	call_pending (EV_A);	2339	EV_INVOKE_PENDING;
1750	}	2340	}
1751	while (expect_true (	2341	while (expect_true (
1752	activecnt	2342	activecnt
1753	&& !loop_done	2343	&& !loop_done
1754	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2344	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1755	));	2345	));
1756		2346
1757	if (loop_done == EVUNLOOP_ONE)	2347	if (loop_done == EVUNLOOP_ONE)
1758	loop_done = EVUNLOOP_CANCEL;	2348	loop_done = EVUNLOOP_CANCEL;
		2349
		2350	#if EV_MINIMAL < 2
		2351	--loop_depth;
		2352	#endif
1759	}	2353	}
1760		2354
1761	void	2355	void
1762	ev_unloop (EV_P_ int how)	2356	ev_unloop (EV_P_ int how)
1763	{	2357	{
1764	loop_done = how;	2358	loop_done = how;
1765	}	2359	}
1766		2360
		2361	void
		2362	ev_ref (EV_P)
		2363	{
		2364	++activecnt;
		2365	}
		2366
		2367	void
		2368	ev_unref (EV_P)
		2369	{
		2370	--activecnt;
		2371	}
		2372
		2373	void
		2374	ev_now_update (EV_P)
		2375	{
		2376	time_update (EV_A_ 1e100);
		2377	}
		2378
		2379	void
		2380	ev_suspend (EV_P)
		2381	{
		2382	ev_now_update (EV_A);
		2383	}
		2384
		2385	void
		2386	ev_resume (EV_P)
		2387	{
		2388	ev_tstamp mn_prev = mn_now;
		2389
		2390	ev_now_update (EV_A);
		2391	timers_reschedule (EV_A_ mn_now - mn_prev);
		2392	#if EV_PERIODIC_ENABLE
		2393	/* TODO: really do this? */
		2394	periodics_reschedule (EV_A);
		2395	#endif
		2396	}
		2397
1767	/*****************************************************************************/	2398	/*****************************************************************************/
		2399	/* singly-linked list management, used when the expected list length is short */
1768		2400
1769	void inline_size	2401	inline_size void
1770	wlist_add (WL *head, WL elem)	2402	wlist_add (WL *head, WL elem)
1771	{	2403	{
1772	elem->next = *head;	2404	elem->next = *head;
1773	*head = elem;	2405	*head = elem;
1774	}	2406	}
1775		2407
1776	void inline_size	2408	inline_size void
1777	wlist_del (WL *head, WL elem)	2409	wlist_del (WL *head, WL elem)
1778	{	2410	{
1779	while (*head)	2411	while (*head)
1780	{	2412	{
1781	if (*head == elem)	2413	if (expect_true (*head == elem))
1782	{	2414	{
1783	*head = elem->next;	2415	*head = elem->next;
1784	return;	2416	break;
1785	}	2417	}
1786		2418
1787	head = &(*head)->next;	2419	head = &(*head)->next;
1788	}	2420	}
1789	}	2421	}
1790		2422
1791	void inline_speed	2423	/* internal, faster, version of ev_clear_pending */
		2424	inline_speed void
1792	clear_pending (EV_P_ W w)	2425	clear_pending (EV_P_ W w)
1793	{	2426	{
1794	if (w->pending)	2427	if (w->pending)
1795	{	2428	{
1796	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2429	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1797	w->pending = 0;	2430	w->pending = 0;
1798	}	2431	}
1799	}	2432	}
1800		2433
1801	int	2434	int
…		…
1805	int pending = w_->pending;	2438	int pending = w_->pending;
1806		2439
1807	if (expect_true (pending))	2440	if (expect_true (pending))
1808	{	2441	{
1809	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2442	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2443	p->w = (W)&pending_w;
1810	w_->pending = 0;	2444	w_->pending = 0;
1811	p->w = 0;
1812	return p->events;	2445	return p->events;
1813	}	2446	}
1814	else	2447	else
1815	return 0;	2448	return 0;
1816	}	2449	}
1817		2450
1818	void inline_size	2451	inline_size void
1819	pri_adjust (EV_P_ W w)	2452	pri_adjust (EV_P_ W w)
1820	{	2453	{
1821	int pri = w->priority;	2454	int pri = ev_priority (w);
1822	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2455	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1823	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2456	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1824	w->priority = pri;	2457	ev_set_priority (w, pri);
1825	}	2458	}
1826		2459
1827	void inline_speed	2460	inline_speed void
1828	ev_start (EV_P_ W w, int active)	2461	ev_start (EV_P_ W w, int active)
1829	{	2462	{
1830	pri_adjust (EV_A_ w);	2463	pri_adjust (EV_A_ w);
1831	w->active = active;	2464	w->active = active;
1832	ev_ref (EV_A);	2465	ev_ref (EV_A);
1833	}	2466	}
1834		2467
1835	void inline_size	2468	inline_size void
1836	ev_stop (EV_P_ W w)	2469	ev_stop (EV_P_ W w)
1837	{	2470	{
1838	ev_unref (EV_A);	2471	ev_unref (EV_A);
1839	w->active = 0;	2472	w->active = 0;
1840	}	2473	}
…		…
1847	int fd = w->fd;	2480	int fd = w->fd;
1848		2481
1849	if (expect_false (ev_is_active (w)))	2482	if (expect_false (ev_is_active (w)))
1850	return;	2483	return;
1851		2484
1852	assert (("ev_io_start called with negative fd", fd >= 0));	2485	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2486	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2487
		2488	EV_FREQUENT_CHECK;
1853		2489
1854	ev_start (EV_A_ (W)w, 1);	2490	ev_start (EV_A_ (W)w, 1);
1855	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2491	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1856	wlist_add (&anfds[fd].head, (WL)w);	2492	wlist_add (&anfds[fd].head, (WL)w);
1857		2493
1858	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2494	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1859	w->events &= ~EV_IOFDSET;	2495	w->events &= ~EV__IOFDSET;
		2496
		2497	EV_FREQUENT_CHECK;
1860	}	2498	}
1861		2499
1862	void noinline	2500	void noinline
1863	ev_io_stop (EV_P_ ev_io *w)	2501	ev_io_stop (EV_P_ ev_io *w)
1864	{	2502	{
1865	clear_pending (EV_A_ (W)w);	2503	clear_pending (EV_A_ (W)w);
1866	if (expect_false (!ev_is_active (w)))	2504	if (expect_false (!ev_is_active (w)))
1867	return;	2505	return;
1868		2506
1869	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2507	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2508
		2509	EV_FREQUENT_CHECK;
1870		2510
1871	wlist_del (&anfds[w->fd].head, (WL)w);	2511	wlist_del (&anfds[w->fd].head, (WL)w);
1872	ev_stop (EV_A_ (W)w);	2512	ev_stop (EV_A_ (W)w);
1873		2513
1874	fd_change (EV_A_ w->fd, 1);	2514	fd_change (EV_A_ w->fd, 1);
		2515
		2516	EV_FREQUENT_CHECK;
1875	}	2517	}
1876		2518
1877	void noinline	2519	void noinline
1878	ev_timer_start (EV_P_ ev_timer *w)	2520	ev_timer_start (EV_P_ ev_timer *w)
1879	{	2521	{
1880	if (expect_false (ev_is_active (w)))	2522	if (expect_false (ev_is_active (w)))
1881	return;	2523	return;
1882		2524
1883	((WT)w)->at += mn_now;	2525	ev_at (w) += mn_now;
1884		2526
1885	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2527	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1886		2528
		2529	EV_FREQUENT_CHECK;
		2530
		2531	++timercnt;
1887	ev_start (EV_A_ (W)w, ++timercnt);	2532	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1888	array_needsize (WT, timers, timermax, timercnt, EMPTY2);	2533	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1889	timers [timercnt - 1] = (WT)w;	2534	ANHE_w (timers [ev_active (w)]) = (WT)w;
1890	upheap (timers, timercnt - 1);	2535	ANHE_at_cache (timers [ev_active (w)]);
		2536	upheap (timers, ev_active (w));
1891		2537
		2538	EV_FREQUENT_CHECK;
		2539
1892	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	2540	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1893	}	2541	}
1894		2542
1895	void noinline	2543	void noinline
1896	ev_timer_stop (EV_P_ ev_timer *w)	2544	ev_timer_stop (EV_P_ ev_timer *w)
1897	{	2545	{
1898	clear_pending (EV_A_ (W)w);	2546	clear_pending (EV_A_ (W)w);
1899	if (expect_false (!ev_is_active (w)))	2547	if (expect_false (!ev_is_active (w)))
1900	return;	2548	return;
1901		2549
1902	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));	2550	EV_FREQUENT_CHECK;
1903		2551
1904	{	2552	{
1905	int active = ((W)w)->active;	2553	int active = ev_active (w);
1906		2554
		2555	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2556
		2557	--timercnt;
		2558
1907	if (expect_true (--active < --timercnt))	2559	if (expect_true (active < timercnt + HEAP0))
1908	{	2560	{
1909	timers [active] = timers [timercnt];	2561	timers [active] = timers [timercnt + HEAP0];
1910	adjustheap (timers, timercnt, active);	2562	adjustheap (timers, timercnt, active);
1911	}	2563	}
1912	}	2564	}
1913		2565
1914	((WT)w)->at -= mn_now;	2566	EV_FREQUENT_CHECK;
		2567
		2568	ev_at (w) -= mn_now;
1915		2569
1916	ev_stop (EV_A_ (W)w);	2570	ev_stop (EV_A_ (W)w);
1917	}	2571	}
1918		2572
1919	void noinline	2573	void noinline
1920	ev_timer_again (EV_P_ ev_timer *w)	2574	ev_timer_again (EV_P_ ev_timer *w)
1921	{	2575	{
		2576	EV_FREQUENT_CHECK;
		2577
1922	if (ev_is_active (w))	2578	if (ev_is_active (w))
1923	{	2579	{
1924	if (w->repeat)	2580	if (w->repeat)
1925	{	2581	{
1926	((WT)w)->at = mn_now + w->repeat;	2582	ev_at (w) = mn_now + w->repeat;
		2583	ANHE_at_cache (timers [ev_active (w)]);
1927	adjustheap (timers, timercnt, ((W)w)->active - 1);	2584	adjustheap (timers, timercnt, ev_active (w));
1928	}	2585	}
1929	else	2586	else
1930	ev_timer_stop (EV_A_ w);	2587	ev_timer_stop (EV_A_ w);
1931	}	2588	}
1932	else if (w->repeat)	2589	else if (w->repeat)
1933	{	2590	{
1934	w->at = w->repeat;	2591	ev_at (w) = w->repeat;
1935	ev_timer_start (EV_A_ w);	2592	ev_timer_start (EV_A_ w);
1936	}	2593	}
		2594
		2595	EV_FREQUENT_CHECK;
		2596	}
		2597
		2598	ev_tstamp
		2599	ev_timer_remaining (EV_P_ ev_timer *w)
		2600	{
		2601	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1937	}	2602	}
1938		2603
1939	#if EV_PERIODIC_ENABLE	2604	#if EV_PERIODIC_ENABLE
1940	void noinline	2605	void noinline
1941	ev_periodic_start (EV_P_ ev_periodic *w)	2606	ev_periodic_start (EV_P_ ev_periodic *w)
1942	{	2607	{
1943	if (expect_false (ev_is_active (w)))	2608	if (expect_false (ev_is_active (w)))
1944	return;	2609	return;
1945		2610
1946	if (w->reschedule_cb)	2611	if (w->reschedule_cb)
1947	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2612	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1948	else if (w->interval)	2613	else if (w->interval)
1949	{	2614	{
1950	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2615	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1951	/* this formula differs from the one in periodic_reify because we do not always round up */	2616	/* this formula differs from the one in periodic_reify because we do not always round up */
1952	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2617	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1953	}	2618	}
1954	else	2619	else
1955	((WT)w)->at = w->offset;	2620	ev_at (w) = w->offset;
1956		2621
		2622	EV_FREQUENT_CHECK;
		2623
		2624	++periodiccnt;
1957	ev_start (EV_A_ (W)w, ++periodiccnt);	2625	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1958	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);	2626	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1959	periodics [periodiccnt - 1] = (WT)w;	2627	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1960	upheap (periodics, periodiccnt - 1);	2628	ANHE_at_cache (periodics [ev_active (w)]);
		2629	upheap (periodics, ev_active (w));
1961		2630
		2631	EV_FREQUENT_CHECK;
		2632
1962	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2633	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1963	}	2634	}
1964		2635
1965	void noinline	2636	void noinline
1966	ev_periodic_stop (EV_P_ ev_periodic *w)	2637	ev_periodic_stop (EV_P_ ev_periodic *w)
1967	{	2638	{
1968	clear_pending (EV_A_ (W)w);	2639	clear_pending (EV_A_ (W)w);
1969	if (expect_false (!ev_is_active (w)))	2640	if (expect_false (!ev_is_active (w)))
1970	return;	2641	return;
1971		2642
1972	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));	2643	EV_FREQUENT_CHECK;
1973		2644
1974	{	2645	{
1975	int active = ((W)w)->active;	2646	int active = ev_active (w);
1976		2647
		2648	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2649
		2650	--periodiccnt;
		2651
1977	if (expect_true (--active < --periodiccnt))	2652	if (expect_true (active < periodiccnt + HEAP0))
1978	{	2653	{
1979	periodics [active] = periodics [periodiccnt];	2654	periodics [active] = periodics [periodiccnt + HEAP0];
1980	adjustheap (periodics, periodiccnt, active);	2655	adjustheap (periodics, periodiccnt, active);
1981	}	2656	}
1982	}	2657	}
1983		2658
		2659	EV_FREQUENT_CHECK;
		2660
1984	ev_stop (EV_A_ (W)w);	2661	ev_stop (EV_A_ (W)w);
1985	}	2662	}
1986		2663
1987	void noinline	2664	void noinline
1988	ev_periodic_again (EV_P_ ev_periodic *w)	2665	ev_periodic_again (EV_P_ ev_periodic *w)
…		…
1998	#endif	2675	#endif
1999		2676
2000	void noinline	2677	void noinline
2001	ev_signal_start (EV_P_ ev_signal *w)	2678	ev_signal_start (EV_P_ ev_signal *w)
2002	{	2679	{
2003	#if EV_MULTIPLICITY
2004	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2005	#endif
2006	if (expect_false (ev_is_active (w)))	2680	if (expect_false (ev_is_active (w)))
2007	return;	2681	return;
2008		2682
2009	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2683	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2010		2684
2011	evpipe_init (EV_A);	2685	#if EV_MULTIPLICITY
		2686	assert (("libev: a signal must not be attached to two different loops",
		2687	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2012		2688
		2689	signals [w->signum - 1].loop = EV_A;
		2690	#endif
		2691
		2692	EV_FREQUENT_CHECK;
		2693
		2694	#if EV_USE_SIGNALFD
		2695	if (sigfd == -2)
2013	{	2696	{
2014	#ifndef _WIN32	2697	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2015	sigset_t full, prev;	2698	if (sigfd < 0 && errno == EINVAL)
2016	sigfillset (&full);	2699	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2017	sigprocmask (SIG_SETMASK, &full, &prev);
2018	#endif
2019		2700
2020	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2701	if (sigfd >= 0)
		2702	{
		2703	fd_intern (sigfd); /* doing it twice will not hurt */
2021		2704
2022	#ifndef _WIN32	2705	sigemptyset (&sigfd_set);
2023	sigprocmask (SIG_SETMASK, &prev, 0);	2706
2024	#endif	2707	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2708	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2709	ev_io_start (EV_A_ &sigfd_w);
		2710	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2711	}
2025	}	2712	}
		2713
		2714	if (sigfd >= 0)
		2715	{
		2716	/* TODO: check .head */
		2717	sigaddset (&sigfd_set, w->signum);
		2718	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2719
		2720	signalfd (sigfd, &sigfd_set, 0);
		2721	}
		2722	#endif
2026		2723
2027	ev_start (EV_A_ (W)w, 1);	2724	ev_start (EV_A_ (W)w, 1);
2028	wlist_add (&signals [w->signum - 1].head, (WL)w);	2725	wlist_add (&signals [w->signum - 1].head, (WL)w);
2029		2726
2030	if (!((WL)w)->next)	2727	if (!((WL)w)->next)
		2728	# if EV_USE_SIGNALFD
		2729	if (sigfd < 0) /*TODO*/
		2730	# endif
2031	{	2731	{
2032	#if _WIN32	2732	# if _WIN32
2033	signal (w->signum, ev_sighandler);	2733	signal (w->signum, ev_sighandler);
2034	#else	2734	# else
2035	struct sigaction sa;	2735	struct sigaction sa;
		2736
		2737	evpipe_init (EV_A);
		2738
2036	sa.sa_handler = ev_sighandler;	2739	sa.sa_handler = ev_sighandler;
2037	sigfillset (&sa.sa_mask);	2740	sigfillset (&sa.sa_mask);
2038	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2741	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2039	sigaction (w->signum, &sa, 0);	2742	sigaction (w->signum, &sa, 0);
		2743
		2744	sigemptyset (&sa.sa_mask);
		2745	sigaddset (&sa.sa_mask, w->signum);
		2746	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2040	#endif	2747	#endif
2041	}	2748	}
		2749
		2750	EV_FREQUENT_CHECK;
2042	}	2751	}
2043		2752
2044	void noinline	2753	void noinline
2045	ev_signal_stop (EV_P_ ev_signal *w)	2754	ev_signal_stop (EV_P_ ev_signal *w)
2046	{	2755	{
2047	clear_pending (EV_A_ (W)w);	2756	clear_pending (EV_A_ (W)w);
2048	if (expect_false (!ev_is_active (w)))	2757	if (expect_false (!ev_is_active (w)))
2049	return;	2758	return;
2050		2759
		2760	EV_FREQUENT_CHECK;
		2761
2051	wlist_del (&signals [w->signum - 1].head, (WL)w);	2762	wlist_del (&signals [w->signum - 1].head, (WL)w);
2052	ev_stop (EV_A_ (W)w);	2763	ev_stop (EV_A_ (W)w);
2053		2764
2054	if (!signals [w->signum - 1].head)	2765	if (!signals [w->signum - 1].head)
		2766	{
		2767	#if EV_MULTIPLICITY
		2768	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2769	#endif
		2770	#if EV_USE_SIGNALFD
		2771	if (sigfd >= 0)
		2772	{
		2773	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2774	sigdelset (&sigfd_set, w->signum);
		2775	signalfd (sigfd, &sigfd_set, 0);
		2776	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2777	/*TODO: maybe unblock signal? */
		2778	}
		2779	else
		2780	#endif
2055	signal (w->signum, SIG_DFL);	2781	signal (w->signum, SIG_DFL);
		2782	}
		2783
		2784	EV_FREQUENT_CHECK;
2056	}	2785	}
2057		2786
2058	void	2787	void
2059	ev_child_start (EV_P_ ev_child *w)	2788	ev_child_start (EV_P_ ev_child *w)
2060	{	2789	{
2061	#if EV_MULTIPLICITY	2790	#if EV_MULTIPLICITY
2062	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2791	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2063	#endif	2792	#endif
2064	if (expect_false (ev_is_active (w)))	2793	if (expect_false (ev_is_active (w)))
2065	return;	2794	return;
2066		2795
		2796	EV_FREQUENT_CHECK;
		2797
2067	ev_start (EV_A_ (W)w, 1);	2798	ev_start (EV_A_ (W)w, 1);
2068	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2799	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2800
		2801	EV_FREQUENT_CHECK;
2069	}	2802	}
2070		2803
2071	void	2804	void
2072	ev_child_stop (EV_P_ ev_child *w)	2805	ev_child_stop (EV_P_ ev_child *w)
2073	{	2806	{
2074	clear_pending (EV_A_ (W)w);	2807	clear_pending (EV_A_ (W)w);
2075	if (expect_false (!ev_is_active (w)))	2808	if (expect_false (!ev_is_active (w)))
2076	return;	2809	return;
2077		2810
		2811	EV_FREQUENT_CHECK;
		2812
2078	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2813	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2079	ev_stop (EV_A_ (W)w);	2814	ev_stop (EV_A_ (W)w);
		2815
		2816	EV_FREQUENT_CHECK;
2080	}	2817	}
2081		2818
2082	#if EV_STAT_ENABLE	2819	#if EV_STAT_ENABLE
2083		2820
2084	# ifdef _WIN32	2821	# ifdef _WIN32
2085	# undef lstat	2822	# undef lstat
2086	# define lstat(a,b) _stati64 (a,b)	2823	# define lstat(a,b) _stati64 (a,b)
2087	# endif	2824	# endif
2088		2825
2089	#define DEF_STAT_INTERVAL 5.0074891	2826	#define DEF_STAT_INTERVAL 5.0074891
		2827	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2090	#define MIN_STAT_INTERVAL 0.1074891	2828	#define MIN_STAT_INTERVAL 0.1074891
2091		2829
2092	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2830	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2093		2831
2094	#if EV_USE_INOTIFY	2832	#if EV_USE_INOTIFY
2095	# define EV_INOTIFY_BUFSIZE 8192	2833	# define EV_INOTIFY_BUFSIZE 8192
…		…
2099	{	2837	{
2100	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);	2838	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2101		2839
2102	if (w->wd < 0)	2840	if (w->wd < 0)
2103	{	2841	{
		2842	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2104	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2843	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2105		2844
2106	/* monitor some parent directory for speedup hints */	2845	/* monitor some parent directory for speedup hints */
		2846	/* note that exceeding the hardcoded path limit is not a correctness issue, */
		2847	/* but an efficiency issue only */
2107	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2848	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2108	{	2849	{
2109	char path [4096];	2850	char path [4096];
2110	strcpy (path, w->path);	2851	strcpy (path, w->path);
2111		2852
…		…
2114	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2855	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2115	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2856	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2116		2857
2117	char *pend = strrchr (path, '/');	2858	char *pend = strrchr (path, '/');
2118		2859
2119	if (!pend)	2860	if (!pend || pend == path)
2120	break; /* whoops, no '/', complain to your admin */	2861	break;
2121		2862
2122	*pend = 0;	2863	*pend = 0;
2123	w->wd = inotify_add_watch (fs_fd, path, mask);	2864	w->wd = inotify_add_watch (fs_fd, path, mask);
2124	}	2865	}
2125	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2866	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2126	}	2867	}
2127	}	2868	}
2128	else
2129	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2130		2869
2131	if (w->wd >= 0)	2870	if (w->wd >= 0)
		2871	{
		2872	struct statfs sfs;
		2873
2132	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2874	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2875
		2876	/* now local changes will be tracked by inotify, but remote changes won't */
		2877	/* unless the filesystem it known to be local, we therefore still poll */
		2878	/* also do poll on <2.6.25, but with normal frequency */
		2879
		2880	if (fs_2625 && !statfs (w->path, &sfs))
		2881	if (sfs.f_type == 0x1373 /* devfs */
		2882	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2883	|| sfs.f_type == 0x3153464a /* jfs */
		2884	|| sfs.f_type == 0x52654973 /* reiser3 */
		2885	|| sfs.f_type == 0x01021994 /* tempfs */
		2886	|| sfs.f_type == 0x58465342 /* xfs */)
		2887	return;
		2888
		2889	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2890	ev_timer_again (EV_A_ &w->timer);
		2891	}
2133	}	2892	}
2134		2893
2135	static void noinline	2894	static void noinline
2136	infy_del (EV_P_ ev_stat *w)	2895	infy_del (EV_P_ ev_stat *w)
2137	{	2896	{
…		…
2151		2910
2152	static void noinline	2911	static void noinline
2153	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2912	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2154	{	2913	{
2155	if (slot < 0)	2914	if (slot < 0)
2156	/* overflow, need to check for all hahs slots */	2915	/* overflow, need to check for all hash slots */
2157	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2916	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2158	infy_wd (EV_A_ slot, wd, ev);	2917	infy_wd (EV_A_ slot, wd, ev);
2159	else	2918	else
2160	{	2919	{
2161	WL w_;	2920	WL w_;
…		…
2167		2926
2168	if (w->wd == wd || wd == -1)	2927	if (w->wd == wd || wd == -1)
2169	{	2928	{
2170	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2929	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2171	{	2930	{
		2931	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2172	w->wd = -1;	2932	w->wd = -1;
2173	infy_add (EV_A_ w); /* re-add, no matter what */	2933	infy_add (EV_A_ w); /* re-add, no matter what */
2174	}	2934	}
2175		2935
2176	stat_timer_cb (EV_A_ &w->timer, 0);	2936	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2189		2949
2190	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2950	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2191	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2951	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2192	}	2952	}
2193		2953
2194	void inline_size	2954	inline_size void
		2955	check_2625 (EV_P)
		2956	{
		2957	/* kernels < 2.6.25 are borked
		2958	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2959	*/
		2960	struct utsname buf;
		2961	int major, minor, micro;
		2962
		2963	if (uname (&buf))
		2964	return;
		2965
		2966	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2967	return;
		2968
		2969	if (major < 2
		2970	|| (major == 2 && minor < 6)
		2971	|| (major == 2 && minor == 6 && micro < 25))
		2972	return;
		2973
		2974	fs_2625 = 1;
		2975	}
		2976
		2977	inline_size void
2195	infy_init (EV_P)	2978	infy_init (EV_P)
2196	{	2979	{
2197	if (fs_fd != -2)	2980	if (fs_fd != -2)
2198	return;	2981	return;
		2982
		2983	fs_fd = -1;
		2984
		2985	check_2625 (EV_A);
2199		2986
2200	fs_fd = inotify_init ();	2987	fs_fd = inotify_init ();
2201		2988
2202	if (fs_fd >= 0)	2989	if (fs_fd >= 0)
2203	{	2990	{
…		…
2205	ev_set_priority (&fs_w, EV_MAXPRI);	2992	ev_set_priority (&fs_w, EV_MAXPRI);
2206	ev_io_start (EV_A_ &fs_w);	2993	ev_io_start (EV_A_ &fs_w);
2207	}	2994	}
2208	}	2995	}
2209		2996
2210	void inline_size	2997	inline_size void
2211	infy_fork (EV_P)	2998	infy_fork (EV_P)
2212	{	2999	{
2213	int slot;	3000	int slot;
2214		3001
2215	if (fs_fd < 0)	3002	if (fs_fd < 0)
…		…
2231	w->wd = -1;	3018	w->wd = -1;
2232		3019
2233	if (fs_fd >= 0)	3020	if (fs_fd >= 0)
2234	infy_add (EV_A_ w); /* re-add, no matter what */	3021	infy_add (EV_A_ w); /* re-add, no matter what */
2235	else	3022	else
2236	ev_timer_start (EV_A_ &w->timer);	3023	ev_timer_again (EV_A_ &w->timer);
2237	}	3024	}
2238
2239	}	3025	}
2240	}	3026	}
2241		3027
		3028	#endif
		3029
		3030	#ifdef _WIN32
		3031	# define EV_LSTAT(p,b) _stati64 (p, b)
		3032	#else
		3033	# define EV_LSTAT(p,b) lstat (p, b)
2242	#endif	3034	#endif
2243		3035
2244	void	3036	void
2245	ev_stat_stat (EV_P_ ev_stat *w)	3037	ev_stat_stat (EV_P_ ev_stat *w)
2246	{	3038	{
…		…
2273	|| w->prev.st_atime != w->attr.st_atime	3065	|| w->prev.st_atime != w->attr.st_atime
2274	|| w->prev.st_mtime != w->attr.st_mtime	3066	|| w->prev.st_mtime != w->attr.st_mtime
2275	|| w->prev.st_ctime != w->attr.st_ctime	3067	|| w->prev.st_ctime != w->attr.st_ctime
2276	) {	3068	) {
2277	#if EV_USE_INOTIFY	3069	#if EV_USE_INOTIFY
		3070	if (fs_fd >= 0)
		3071	{
2278	infy_del (EV_A_ w);	3072	infy_del (EV_A_ w);
2279	infy_add (EV_A_ w);	3073	infy_add (EV_A_ w);
2280	ev_stat_stat (EV_A_ w); /* avoid race... */	3074	ev_stat_stat (EV_A_ w); /* avoid race... */
		3075	}
2281	#endif	3076	#endif
2282		3077
2283	ev_feed_event (EV_A_ w, EV_STAT);	3078	ev_feed_event (EV_A_ w, EV_STAT);
2284	}	3079	}
2285	}	3080	}
…		…
2288	ev_stat_start (EV_P_ ev_stat *w)	3083	ev_stat_start (EV_P_ ev_stat *w)
2289	{	3084	{
2290	if (expect_false (ev_is_active (w)))	3085	if (expect_false (ev_is_active (w)))
2291	return;	3086	return;
2292		3087
2293	/* since we use memcmp, we need to clear any padding data etc. */
2294	memset (&w->prev, 0, sizeof (ev_statdata));
2295	memset (&w->attr, 0, sizeof (ev_statdata));
2296
2297	ev_stat_stat (EV_A_ w);	3088	ev_stat_stat (EV_A_ w);
2298		3089
		3090	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2299	if (w->interval < MIN_STAT_INTERVAL)	3091	w->interval = MIN_STAT_INTERVAL;
2300	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2301		3092
2302	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3093	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2303	ev_set_priority (&w->timer, ev_priority (w));	3094	ev_set_priority (&w->timer, ev_priority (w));
2304		3095
2305	#if EV_USE_INOTIFY	3096	#if EV_USE_INOTIFY
2306	infy_init (EV_A);	3097	infy_init (EV_A);
2307		3098
2308	if (fs_fd >= 0)	3099	if (fs_fd >= 0)
2309	infy_add (EV_A_ w);	3100	infy_add (EV_A_ w);
2310	else	3101	else
2311	#endif	3102	#endif
2312	ev_timer_start (EV_A_ &w->timer);	3103	ev_timer_again (EV_A_ &w->timer);
2313		3104
2314	ev_start (EV_A_ (W)w, 1);	3105	ev_start (EV_A_ (W)w, 1);
		3106
		3107	EV_FREQUENT_CHECK;
2315	}	3108	}
2316		3109
2317	void	3110	void
2318	ev_stat_stop (EV_P_ ev_stat *w)	3111	ev_stat_stop (EV_P_ ev_stat *w)
2319	{	3112	{
2320	clear_pending (EV_A_ (W)w);	3113	clear_pending (EV_A_ (W)w);
2321	if (expect_false (!ev_is_active (w)))	3114	if (expect_false (!ev_is_active (w)))
2322	return;	3115	return;
2323		3116
		3117	EV_FREQUENT_CHECK;
		3118
2324	#if EV_USE_INOTIFY	3119	#if EV_USE_INOTIFY
2325	infy_del (EV_A_ w);	3120	infy_del (EV_A_ w);
2326	#endif	3121	#endif
2327	ev_timer_stop (EV_A_ &w->timer);	3122	ev_timer_stop (EV_A_ &w->timer);
2328		3123
2329	ev_stop (EV_A_ (W)w);	3124	ev_stop (EV_A_ (W)w);
		3125
		3126	EV_FREQUENT_CHECK;
2330	}	3127	}
2331	#endif	3128	#endif
2332		3129
2333	#if EV_IDLE_ENABLE	3130	#if EV_IDLE_ENABLE
2334	void	3131	void
…		…
2336	{	3133	{
2337	if (expect_false (ev_is_active (w)))	3134	if (expect_false (ev_is_active (w)))
2338	return;	3135	return;
2339		3136
2340	pri_adjust (EV_A_ (W)w);	3137	pri_adjust (EV_A_ (W)w);
		3138
		3139	EV_FREQUENT_CHECK;
2341		3140
2342	{	3141	{
2343	int active = ++idlecnt [ABSPRI (w)];	3142	int active = ++idlecnt [ABSPRI (w)];
2344		3143
2345	++idleall;	3144	++idleall;
2346	ev_start (EV_A_ (W)w, active);	3145	ev_start (EV_A_ (W)w, active);
2347		3146
2348	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	3147	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2349	idles [ABSPRI (w)][active - 1] = w;	3148	idles [ABSPRI (w)][active - 1] = w;
2350	}	3149	}
		3150
		3151	EV_FREQUENT_CHECK;
2351	}	3152	}
2352		3153
2353	void	3154	void
2354	ev_idle_stop (EV_P_ ev_idle *w)	3155	ev_idle_stop (EV_P_ ev_idle *w)
2355	{	3156	{
2356	clear_pending (EV_A_ (W)w);	3157	clear_pending (EV_A_ (W)w);
2357	if (expect_false (!ev_is_active (w)))	3158	if (expect_false (!ev_is_active (w)))
2358	return;	3159	return;
2359		3160
		3161	EV_FREQUENT_CHECK;
		3162
2360	{	3163	{
2361	int active = ((W)w)->active;	3164	int active = ev_active (w);
2362		3165
2363	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3166	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2364	((W)idles [ABSPRI (w)][active - 1])->active = active;	3167	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2365		3168
2366	ev_stop (EV_A_ (W)w);	3169	ev_stop (EV_A_ (W)w);
2367	--idleall;	3170	--idleall;
2368	}	3171	}
		3172
		3173	EV_FREQUENT_CHECK;
2369	}	3174	}
2370	#endif	3175	#endif
2371		3176
2372	void	3177	void
2373	ev_prepare_start (EV_P_ ev_prepare *w)	3178	ev_prepare_start (EV_P_ ev_prepare *w)
2374	{	3179	{
2375	if (expect_false (ev_is_active (w)))	3180	if (expect_false (ev_is_active (w)))
2376	return;	3181	return;
		3182
		3183	EV_FREQUENT_CHECK;
2377		3184
2378	ev_start (EV_A_ (W)w, ++preparecnt);	3185	ev_start (EV_A_ (W)w, ++preparecnt);
2379	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3186	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2380	prepares [preparecnt - 1] = w;	3187	prepares [preparecnt - 1] = w;
		3188
		3189	EV_FREQUENT_CHECK;
2381	}	3190	}
2382		3191
2383	void	3192	void
2384	ev_prepare_stop (EV_P_ ev_prepare *w)	3193	ev_prepare_stop (EV_P_ ev_prepare *w)
2385	{	3194	{
2386	clear_pending (EV_A_ (W)w);	3195	clear_pending (EV_A_ (W)w);
2387	if (expect_false (!ev_is_active (w)))	3196	if (expect_false (!ev_is_active (w)))
2388	return;	3197	return;
2389		3198
		3199	EV_FREQUENT_CHECK;
		3200
2390	{	3201	{
2391	int active = ((W)w)->active;	3202	int active = ev_active (w);
		3203
2392	prepares [active - 1] = prepares [--preparecnt];	3204	prepares [active - 1] = prepares [--preparecnt];
2393	((W)prepares [active - 1])->active = active;	3205	ev_active (prepares [active - 1]) = active;
2394	}	3206	}
2395		3207
2396	ev_stop (EV_A_ (W)w);	3208	ev_stop (EV_A_ (W)w);
		3209
		3210	EV_FREQUENT_CHECK;
2397	}	3211	}
2398		3212
2399	void	3213	void
2400	ev_check_start (EV_P_ ev_check *w)	3214	ev_check_start (EV_P_ ev_check *w)
2401	{	3215	{
2402	if (expect_false (ev_is_active (w)))	3216	if (expect_false (ev_is_active (w)))
2403	return;	3217	return;
		3218
		3219	EV_FREQUENT_CHECK;
2404		3220
2405	ev_start (EV_A_ (W)w, ++checkcnt);	3221	ev_start (EV_A_ (W)w, ++checkcnt);
2406	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3222	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2407	checks [checkcnt - 1] = w;	3223	checks [checkcnt - 1] = w;
		3224
		3225	EV_FREQUENT_CHECK;
2408	}	3226	}
2409		3227
2410	void	3228	void
2411	ev_check_stop (EV_P_ ev_check *w)	3229	ev_check_stop (EV_P_ ev_check *w)
2412	{	3230	{
2413	clear_pending (EV_A_ (W)w);	3231	clear_pending (EV_A_ (W)w);
2414	if (expect_false (!ev_is_active (w)))	3232	if (expect_false (!ev_is_active (w)))
2415	return;	3233	return;
2416		3234
		3235	EV_FREQUENT_CHECK;
		3236
2417	{	3237	{
2418	int active = ((W)w)->active;	3238	int active = ev_active (w);
		3239
2419	checks [active - 1] = checks [--checkcnt];	3240	checks [active - 1] = checks [--checkcnt];
2420	((W)checks [active - 1])->active = active;	3241	ev_active (checks [active - 1]) = active;
2421	}	3242	}
2422		3243
2423	ev_stop (EV_A_ (W)w);	3244	ev_stop (EV_A_ (W)w);
		3245
		3246	EV_FREQUENT_CHECK;
2424	}	3247	}
2425		3248
2426	#if EV_EMBED_ENABLE	3249	#if EV_EMBED_ENABLE
2427	void noinline	3250	void noinline
2428	ev_embed_sweep (EV_P_ ev_embed *w)	3251	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2445	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3268	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2446	{	3269	{
2447	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3270	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2448		3271
2449	{	3272	{
2450	struct ev_loop *loop = w->other;	3273	EV_P = w->other;
2451		3274
2452	while (fdchangecnt)	3275	while (fdchangecnt)
2453	{	3276	{
2454	fd_reify (EV_A);	3277	fd_reify (EV_A);
2455	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3278	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2456	}	3279	}
2457	}	3280	}
2458	}	3281	}
2459		3282
		3283	static void
		3284	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3285	{
		3286	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3287
		3288	ev_embed_stop (EV_A_ w);
		3289
		3290	{
		3291	EV_P = w->other;
		3292
		3293	ev_loop_fork (EV_A);
		3294	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3295	}
		3296
		3297	ev_embed_start (EV_A_ w);
		3298	}
		3299
2460	#if 0	3300	#if 0
2461	static void	3301	static void
2462	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3302	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2463	{	3303	{
2464	ev_idle_stop (EV_A_ idle);	3304	ev_idle_stop (EV_A_ idle);
…		…
2470	{	3310	{
2471	if (expect_false (ev_is_active (w)))	3311	if (expect_false (ev_is_active (w)))
2472	return;	3312	return;
2473		3313
2474	{	3314	{
2475	struct ev_loop *loop = w->other;	3315	EV_P = w->other;
2476	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3316	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2477	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3317	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2478	}	3318	}
		3319
		3320	EV_FREQUENT_CHECK;
2479		3321
2480	ev_set_priority (&w->io, ev_priority (w));	3322	ev_set_priority (&w->io, ev_priority (w));
2481	ev_io_start (EV_A_ &w->io);	3323	ev_io_start (EV_A_ &w->io);
2482		3324
2483	ev_prepare_init (&w->prepare, embed_prepare_cb);	3325	ev_prepare_init (&w->prepare, embed_prepare_cb);
2484	ev_set_priority (&w->prepare, EV_MINPRI);	3326	ev_set_priority (&w->prepare, EV_MINPRI);
2485	ev_prepare_start (EV_A_ &w->prepare);	3327	ev_prepare_start (EV_A_ &w->prepare);
2486		3328
		3329	ev_fork_init (&w->fork, embed_fork_cb);
		3330	ev_fork_start (EV_A_ &w->fork);
		3331
2487	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3332	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2488		3333
2489	ev_start (EV_A_ (W)w, 1);	3334	ev_start (EV_A_ (W)w, 1);
		3335
		3336	EV_FREQUENT_CHECK;
2490	}	3337	}
2491		3338
2492	void	3339	void
2493	ev_embed_stop (EV_P_ ev_embed *w)	3340	ev_embed_stop (EV_P_ ev_embed *w)
2494	{	3341	{
2495	clear_pending (EV_A_ (W)w);	3342	clear_pending (EV_A_ (W)w);
2496	if (expect_false (!ev_is_active (w)))	3343	if (expect_false (!ev_is_active (w)))
2497	return;	3344	return;
2498		3345
		3346	EV_FREQUENT_CHECK;
		3347
2499	ev_io_stop (EV_A_ &w->io);	3348	ev_io_stop (EV_A_ &w->io);
2500	ev_prepare_stop (EV_A_ &w->prepare);	3349	ev_prepare_stop (EV_A_ &w->prepare);
		3350	ev_fork_stop (EV_A_ &w->fork);
2501		3351
2502	ev_stop (EV_A_ (W)w);	3352	EV_FREQUENT_CHECK;
2503	}	3353	}
2504	#endif	3354	#endif
2505		3355
2506	#if EV_FORK_ENABLE	3356	#if EV_FORK_ENABLE
2507	void	3357	void
2508	ev_fork_start (EV_P_ ev_fork *w)	3358	ev_fork_start (EV_P_ ev_fork *w)
2509	{	3359	{
2510	if (expect_false (ev_is_active (w)))	3360	if (expect_false (ev_is_active (w)))
2511	return;	3361	return;
		3362
		3363	EV_FREQUENT_CHECK;
2512		3364
2513	ev_start (EV_A_ (W)w, ++forkcnt);	3365	ev_start (EV_A_ (W)w, ++forkcnt);
2514	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3366	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2515	forks [forkcnt - 1] = w;	3367	forks [forkcnt - 1] = w;
		3368
		3369	EV_FREQUENT_CHECK;
2516	}	3370	}
2517		3371
2518	void	3372	void
2519	ev_fork_stop (EV_P_ ev_fork *w)	3373	ev_fork_stop (EV_P_ ev_fork *w)
2520	{	3374	{
2521	clear_pending (EV_A_ (W)w);	3375	clear_pending (EV_A_ (W)w);
2522	if (expect_false (!ev_is_active (w)))	3376	if (expect_false (!ev_is_active (w)))
2523	return;	3377	return;
2524		3378
		3379	EV_FREQUENT_CHECK;
		3380
2525	{	3381	{
2526	int active = ((W)w)->active;	3382	int active = ev_active (w);
		3383
2527	forks [active - 1] = forks [--forkcnt];	3384	forks [active - 1] = forks [--forkcnt];
2528	((W)forks [active - 1])->active = active;	3385	ev_active (forks [active - 1]) = active;
2529	}	3386	}
2530		3387
2531	ev_stop (EV_A_ (W)w);	3388	ev_stop (EV_A_ (W)w);
		3389
		3390	EV_FREQUENT_CHECK;
2532	}	3391	}
2533	#endif	3392	#endif
2534		3393
2535	#if EV_ASYNC_ENABLE	3394	#if EV_ASYNC_ENABLE
2536	void	3395	void
…		…
2538	{	3397	{
2539	if (expect_false (ev_is_active (w)))	3398	if (expect_false (ev_is_active (w)))
2540	return;	3399	return;
2541		3400
2542	evpipe_init (EV_A);	3401	evpipe_init (EV_A);
		3402
		3403	EV_FREQUENT_CHECK;
2543		3404
2544	ev_start (EV_A_ (W)w, ++asynccnt);	3405	ev_start (EV_A_ (W)w, ++asynccnt);
2545	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3406	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2546	asyncs [asynccnt - 1] = w;	3407	asyncs [asynccnt - 1] = w;
		3408
		3409	EV_FREQUENT_CHECK;
2547	}	3410	}
2548		3411
2549	void	3412	void
2550	ev_async_stop (EV_P_ ev_async *w)	3413	ev_async_stop (EV_P_ ev_async *w)
2551	{	3414	{
2552	clear_pending (EV_A_ (W)w);	3415	clear_pending (EV_A_ (W)w);
2553	if (expect_false (!ev_is_active (w)))	3416	if (expect_false (!ev_is_active (w)))
2554	return;	3417	return;
2555		3418
		3419	EV_FREQUENT_CHECK;
		3420
2556	{	3421	{
2557	int active = ((W)w)->active;	3422	int active = ev_active (w);
		3423
2558	asyncs [active - 1] = asyncs [--asynccnt];	3424	asyncs [active - 1] = asyncs [--asynccnt];
2559	((W)asyncs [active - 1])->active = active;	3425	ev_active (asyncs [active - 1]) = active;
2560	}	3426	}
2561		3427
2562	ev_stop (EV_A_ (W)w);	3428	ev_stop (EV_A_ (W)w);
		3429
		3430	EV_FREQUENT_CHECK;
2563	}	3431	}
2564		3432
2565	void	3433	void
2566	ev_async_send (EV_P_ ev_async *w)	3434	ev_async_send (EV_P_ ev_async *w)
2567	{	3435	{
2568	w->sent = 1;	3436	w->sent = 1;
2569	evpipe_write (EV_A_ &gotasync);	3437	evpipe_write (EV_A_ &async_pending);
2570	}	3438	}
2571	#endif	3439	#endif
2572		3440
2573	/*****************************************************************************/	3441	/*****************************************************************************/
2574		3442
…		…
2584	once_cb (EV_P_ struct ev_once *once, int revents)	3452	once_cb (EV_P_ struct ev_once *once, int revents)
2585	{	3453	{
2586	void (*cb)(int revents, void *arg) = once->cb;	3454	void (*cb)(int revents, void *arg) = once->cb;
2587	void *arg = once->arg;	3455	void *arg = once->arg;
2588		3456
2589	ev_io_stop (EV_A_ &once->io);	3457	ev_io_stop (EV_A_ &once->io);
2590	ev_timer_stop (EV_A_ &once->to);	3458	ev_timer_stop (EV_A_ &once->to);
2591	ev_free (once);	3459	ev_free (once);
2592		3460
2593	cb (revents, arg);	3461	cb (revents, arg);
2594	}	3462	}
2595		3463
2596	static void	3464	static void
2597	once_cb_io (EV_P_ ev_io *w, int revents)	3465	once_cb_io (EV_P_ ev_io *w, int revents)
2598	{	3466	{
2599	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3467	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3468
		3469	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2600	}	3470	}
2601		3471
2602	static void	3472	static void
2603	once_cb_to (EV_P_ ev_timer *w, int revents)	3473	once_cb_to (EV_P_ ev_timer *w, int revents)
2604	{	3474	{
2605	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3475	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3476
		3477	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2606	}	3478	}
2607		3479
2608	void	3480	void
2609	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3481	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2610	{	3482	{
…		…
2632	ev_timer_set (&once->to, timeout, 0.);	3504	ev_timer_set (&once->to, timeout, 0.);
2633	ev_timer_start (EV_A_ &once->to);	3505	ev_timer_start (EV_A_ &once->to);
2634	}	3506	}
2635	}	3507	}
2636		3508
		3509	/*****************************************************************************/
		3510
		3511	#if EV_WALK_ENABLE
		3512	void
		3513	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3514	{
		3515	int i, j;
		3516	ev_watcher_list *wl, *wn;
		3517
		3518	if (types & (EV_IO | EV_EMBED))
		3519	for (i = 0; i < anfdmax; ++i)
		3520	for (wl = anfds [i].head; wl; )
		3521	{
		3522	wn = wl->next;
		3523
		3524	#if EV_EMBED_ENABLE
		3525	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3526	{
		3527	if (types & EV_EMBED)
		3528	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3529	}
		3530	else
		3531	#endif
		3532	#if EV_USE_INOTIFY
		3533	if (ev_cb ((ev_io *)wl) == infy_cb)
		3534	;
		3535	else
		3536	#endif
		3537	if ((ev_io *)wl != &pipe_w)
		3538	if (types & EV_IO)
		3539	cb (EV_A_ EV_IO, wl);
		3540
		3541	wl = wn;
		3542	}
		3543
		3544	if (types & (EV_TIMER | EV_STAT))
		3545	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3546	#if EV_STAT_ENABLE
		3547	/*TODO: timer is not always active*/
		3548	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3549	{
		3550	if (types & EV_STAT)
		3551	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3552	}
		3553	else
		3554	#endif
		3555	if (types & EV_TIMER)
		3556	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3557
		3558	#if EV_PERIODIC_ENABLE
		3559	if (types & EV_PERIODIC)
		3560	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3561	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3562	#endif
		3563
		3564	#if EV_IDLE_ENABLE
		3565	if (types & EV_IDLE)
		3566	for (j = NUMPRI; i--; )
		3567	for (i = idlecnt [j]; i--; )
		3568	cb (EV_A_ EV_IDLE, idles [j][i]);
		3569	#endif
		3570
		3571	#if EV_FORK_ENABLE
		3572	if (types & EV_FORK)
		3573	for (i = forkcnt; i--; )
		3574	if (ev_cb (forks [i]) != embed_fork_cb)
		3575	cb (EV_A_ EV_FORK, forks [i]);
		3576	#endif
		3577
		3578	#if EV_ASYNC_ENABLE
		3579	if (types & EV_ASYNC)
		3580	for (i = asynccnt; i--; )
		3581	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3582	#endif
		3583
		3584	if (types & EV_PREPARE)
		3585	for (i = preparecnt; i--; )
		3586	#if EV_EMBED_ENABLE
		3587	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3588	#endif
		3589	cb (EV_A_ EV_PREPARE, prepares [i]);
		3590
		3591	if (types & EV_CHECK)
		3592	for (i = checkcnt; i--; )
		3593	cb (EV_A_ EV_CHECK, checks [i]);
		3594
		3595	if (types & EV_SIGNAL)
		3596	for (i = 0; i < EV_NSIG - 1; ++i)
		3597	for (wl = signals [i].head; wl; )
		3598	{
		3599	wn = wl->next;
		3600	cb (EV_A_ EV_SIGNAL, wl);
		3601	wl = wn;
		3602	}
		3603
		3604	if (types & EV_CHILD)
		3605	for (i = EV_PID_HASHSIZE; i--; )
		3606	for (wl = childs [i]; wl; )
		3607	{
		3608	wn = wl->next;
		3609	cb (EV_A_ EV_CHILD, wl);
		3610	wl = wn;
		3611	}
		3612	/* EV_STAT 0x00001000 /* stat data changed */
		3613	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3614	}
		3615	#endif
		3616
2637	#if EV_MULTIPLICITY	3617	#if EV_MULTIPLICITY
2638	#include "ev_wrap.h"	3618	#include "ev_wrap.h"
2639	#endif	3619	#endif
2640		3620
2641	#ifdef __cplusplus	3621	#ifdef __cplusplus

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