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Comparing libev/ev.c (file contents):
Revision 1.220 by root, Sun Apr 6 09:53:17 2008 UTC vs.
Revision 1.311 by root, Wed Jul 29 09:36:05 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 */
		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
		397	# ifdef __cplusplus
		398	extern "C" {
		399	# endif
273	int eventfd (unsigned int initval, int flags);	400	int eventfd (unsigned int initval, int flags);
		401	# ifdef __cplusplus
		402	}
		403	# endif
		404	#endif
		405
		406	#if EV_USE_SIGNALFD
		407	# include <sys/signalfd.h>
274	#endif	408	#endif
275		409
276	/**/	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
277		417
278	/*	418	/*
279	* This is used to avoid floating point rounding problems.	419	* This is used to avoid floating point rounding problems.
280	* It is added to ev_rt_now when scheduling periodics	420	* It is added to ev_rt_now when scheduling periodics
281	* to ensure progress, time-wise, even when rounding	421	* to ensure progress, time-wise, even when rounding
…		…
293	# define expect(expr,value) __builtin_expect ((expr),(value))	433	# define expect(expr,value) __builtin_expect ((expr),(value))
294	# define noinline __attribute__ ((noinline))	434	# define noinline __attribute__ ((noinline))
295	#else	435	#else
296	# define expect(expr,value) (expr)	436	# define expect(expr,value) (expr)
297	# define noinline	437	# define noinline
298	# if __STDC_VERSION__ < 199901L	438	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
299	# define inline	439	# define inline
300	# endif	440	# endif
301	#endif	441	#endif
302		442
303	#define expect_false(expr) expect ((expr) != 0, 0)	443	#define expect_false(expr) expect ((expr) != 0, 0)
…		…
308	# define inline_speed static noinline	448	# define inline_speed static noinline
309	#else	449	#else
310	# define inline_speed static inline	450	# define inline_speed static inline
311	#endif	451	#endif
312		452
313	#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
314	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	458	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		459	#endif
315		460
316	#define EMPTY /* required for microsofts broken pseudo-c compiler */	461	#define EMPTY /* required for microsofts broken pseudo-c compiler */
317	#define EMPTY2(a,b) /* used to suppress some warnings */	462	#define EMPTY2(a,b) /* used to suppress some warnings */
318		463
319	typedef ev_watcher *W;	464	typedef ev_watcher *W;
320	typedef ev_watcher_list *WL;	465	typedef ev_watcher_list *WL;
321	typedef ev_watcher_time *WT;	466	typedef ev_watcher_time *WT;
322		467
323	#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
324	/* 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 */
325	/* 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
326	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? */
327	#endif	479	#endif
328		480
329	#ifdef _WIN32	481	#ifdef _WIN32
330	# include "ev_win32.c"	482	# include "ev_win32.c"
…		…
339	{	491	{
340	syserr_cb = cb;	492	syserr_cb = cb;
341	}	493	}
342		494
343	static void noinline	495	static void noinline
344	syserr (const char *msg)	496	ev_syserr (const char *msg)
345	{	497	{
346	if (!msg)	498	if (!msg)
347	msg = "(libev) system error";	499	msg = "(libev) system error";
348		500
349	if (syserr_cb)	501	if (syserr_cb)
…		…
353	perror (msg);	505	perror (msg);
354	abort ();	506	abort ();
355	}	507	}
356	}	508	}
357		509
		510	static void *
		511	ev_realloc_emul (void *ptr, long size)
		512	{
		513	/* some systems, notably openbsd and darwin, fail to properly
		514	* implement realloc (x, 0) (as required by both ansi c-98 and
		515	* the single unix specification, so work around them here.
		516	*/
		517
		518	if (size)
		519	return realloc (ptr, size);
		520
		521	free (ptr);
		522	return 0;
		523	}
		524
358	static void *(*alloc)(void *ptr, long size);	525	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
359		526
360	void	527	void
361	ev_set_allocator (void *(*cb)(void *ptr, long size))	528	ev_set_allocator (void *(*cb)(void *ptr, long size))
362	{	529	{
363	alloc = cb;	530	alloc = cb;
364	}	531	}
365		532
366	inline_speed void *	533	inline_speed void *
367	ev_realloc (void *ptr, long size)	534	ev_realloc (void *ptr, long size)
368	{	535	{
369	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	536	ptr = alloc (ptr, size);
370		537
371	if (!ptr && size)	538	if (!ptr && size)
372	{	539	{
373	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	540	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
374	abort ();	541	abort ();
…		…
380	#define ev_malloc(size) ev_realloc (0, (size))	547	#define ev_malloc(size) ev_realloc (0, (size))
381	#define ev_free(ptr) ev_realloc ((ptr), 0)	548	#define ev_free(ptr) ev_realloc ((ptr), 0)
382		549
383	/*****************************************************************************/	550	/*****************************************************************************/
384		551
		552	/* set in reify when reification needed */
		553	#define EV_ANFD_REIFY 1
		554
		555	/* file descriptor info structure */
385	typedef struct	556	typedef struct
386	{	557	{
387	WL head;	558	WL head;
388	unsigned char events;	559	unsigned char events; /* the events watched for */
		560	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		561	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
389	unsigned char reify;	562	unsigned char unused;
		563	#if EV_USE_EPOLL
		564	unsigned int egen; /* generation counter to counter epoll bugs */
		565	#endif
390	#if EV_SELECT_IS_WINSOCKET	566	#if EV_SELECT_IS_WINSOCKET
391	SOCKET handle;	567	SOCKET handle;
392	#endif	568	#endif
393	} ANFD;	569	} ANFD;
394		570
		571	/* stores the pending event set for a given watcher */
395	typedef struct	572	typedef struct
396	{	573	{
397	W w;	574	W w;
398	int events;	575	int events; /* the pending event set for the given watcher */
399	} ANPENDING;	576	} ANPENDING;
400		577
401	#if EV_USE_INOTIFY	578	#if EV_USE_INOTIFY
		579	/* hash table entry per inotify-id */
402	typedef struct	580	typedef struct
403	{	581	{
404	WL head;	582	WL head;
405	} ANFS;	583	} ANFS;
		584	#endif
		585
		586	/* Heap Entry */
		587	#if EV_HEAP_CACHE_AT
		588	/* a heap element */
		589	typedef struct {
		590	ev_tstamp at;
		591	WT w;
		592	} ANHE;
		593
		594	#define ANHE_w(he) (he).w /* access watcher, read-write */
		595	#define ANHE_at(he) (he).at /* access cached at, read-only */
		596	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		597	#else
		598	/* a heap element */
		599	typedef WT ANHE;
		600
		601	#define ANHE_w(he) (he)
		602	#define ANHE_at(he) (he)->at
		603	#define ANHE_at_cache(he)
406	#endif	604	#endif
407		605
408	#if EV_MULTIPLICITY	606	#if EV_MULTIPLICITY
409		607
410	struct ev_loop	608	struct ev_loop
…		…
429		627
430	static int ev_default_loop_ptr;	628	static int ev_default_loop_ptr;
431		629
432	#endif	630	#endif
433		631
		632	#if EV_MINIMAL < 2
		633	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		634	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		635	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		636	#else
		637	# define EV_RELEASE_CB (void)0
		638	# define EV_ACQUIRE_CB (void)0
		639	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		640	#endif
		641
		642	#define EVUNLOOP_RECURSE 0x80
		643
434	/*****************************************************************************/	644	/*****************************************************************************/
435		645
		646	#ifndef EV_HAVE_EV_TIME
436	ev_tstamp	647	ev_tstamp
437	ev_time (void)	648	ev_time (void)
438	{	649	{
439	#if EV_USE_REALTIME	650	#if EV_USE_REALTIME
		651	if (expect_true (have_realtime))
		652	{
440	struct timespec ts;	653	struct timespec ts;
441	clock_gettime (CLOCK_REALTIME, &ts);	654	clock_gettime (CLOCK_REALTIME, &ts);
442	return ts.tv_sec + ts.tv_nsec * 1e-9;	655	return ts.tv_sec + ts.tv_nsec * 1e-9;
443	#else	656	}
		657	#endif
		658
444	struct timeval tv;	659	struct timeval tv;
445	gettimeofday (&tv, 0);	660	gettimeofday (&tv, 0);
446	return tv.tv_sec + tv.tv_usec * 1e-6;	661	return tv.tv_sec + tv.tv_usec * 1e-6;
447	#endif
448	}	662	}
		663	#endif
449		664
450	ev_tstamp inline_size	665	inline_size ev_tstamp
451	get_clock (void)	666	get_clock (void)
452	{	667	{
453	#if EV_USE_MONOTONIC	668	#if EV_USE_MONOTONIC
454	if (expect_true (have_monotonic))	669	if (expect_true (have_monotonic))
455	{	670	{
…		…
488	struct timeval tv;	703	struct timeval tv;
489		704
490	tv.tv_sec = (time_t)delay;	705	tv.tv_sec = (time_t)delay;
491	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	706	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
492		707
		708	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		709	/* something not guaranteed by newer posix versions, but guaranteed */
		710	/* by older ones */
493	select (0, 0, 0, 0, &tv);	711	select (0, 0, 0, 0, &tv);
494	#endif	712	#endif
495	}	713	}
496	}	714	}
497		715
498	/*****************************************************************************/	716	/*****************************************************************************/
499		717
500	int inline_size	718	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		719
		720	/* find a suitable new size for the given array, */
		721	/* hopefully by rounding to a ncie-to-malloc size */
		722	inline_size int
501	array_nextsize (int elem, int cur, int cnt)	723	array_nextsize (int elem, int cur, int cnt)
502	{	724	{
503	int ncur = cur + 1;	725	int ncur = cur + 1;
504		726
505	do	727	do
506	ncur <<= 1;	728	ncur <<= 1;
507	while (cnt > ncur);	729	while (cnt > ncur);
508		730
509	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	731	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
510	if (elem * ncur > 4096)	732	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
511	{	733	{
512	ncur *= elem;	734	ncur *= elem;
513	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	735	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
514	ncur = ncur - sizeof (void *) * 4;	736	ncur = ncur - sizeof (void *) * 4;
515	ncur /= elem;	737	ncur /= elem;
516	}	738	}
517		739
518	return ncur;	740	return ncur;
…		…
522	array_realloc (int elem, void *base, int *cur, int cnt)	744	array_realloc (int elem, void *base, int *cur, int cnt)
523	{	745	{
524	*cur = array_nextsize (elem, *cur, cnt);	746	*cur = array_nextsize (elem, *cur, cnt);
525	return ev_realloc (base, elem * *cur);	747	return ev_realloc (base, elem * *cur);
526	}	748	}
		749
		750	#define array_init_zero(base,count) \
		751	memset ((void *)(base), 0, sizeof (*(base)) * (count))
527		752
528	#define array_needsize(type,base,cur,cnt,init) \	753	#define array_needsize(type,base,cur,cnt,init) \
529	if (expect_false ((cnt) > (cur))) \	754	if (expect_false ((cnt) > (cur))) \
530	{ \	755	{ \
531	int ocur_ = (cur); \	756	int ocur_ = (cur); \
…		…
543	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	768	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
544	}	769	}
545	#endif	770	#endif
546		771
547	#define array_free(stem, idx) \	772	#define array_free(stem, idx) \
548	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	773	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
549		774
550	/*****************************************************************************/	775	/*****************************************************************************/
		776
		777	/* dummy callback for pending events */
		778	static void noinline
		779	pendingcb (EV_P_ ev_prepare *w, int revents)
		780	{
		781	}
551		782
552	void noinline	783	void noinline
553	ev_feed_event (EV_P_ void *w, int revents)	784	ev_feed_event (EV_P_ void *w, int revents)
554	{	785	{
555	W w_ = (W)w;	786	W w_ = (W)w;
…		…
564	pendings [pri][w_->pending - 1].w = w_;	795	pendings [pri][w_->pending - 1].w = w_;
565	pendings [pri][w_->pending - 1].events = revents;	796	pendings [pri][w_->pending - 1].events = revents;
566	}	797	}
567	}	798	}
568		799
569	void inline_speed	800	inline_speed void
		801	feed_reverse (EV_P_ W w)
		802	{
		803	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		804	rfeeds [rfeedcnt++] = w;
		805	}
		806
		807	inline_size void
		808	feed_reverse_done (EV_P_ int revents)
		809	{
		810	do
		811	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		812	while (rfeedcnt);
		813	}
		814
		815	inline_speed void
570	queue_events (EV_P_ W *events, int eventcnt, int type)	816	queue_events (EV_P_ W *events, int eventcnt, int type)
571	{	817	{
572	int i;	818	int i;
573		819
574	for (i = 0; i < eventcnt; ++i)	820	for (i = 0; i < eventcnt; ++i)
575	ev_feed_event (EV_A_ events [i], type);	821	ev_feed_event (EV_A_ events [i], type);
576	}	822	}
577		823
578	/*****************************************************************************/	824	/*****************************************************************************/
579		825
580	void inline_size	826	inline_speed void
581	anfds_init (ANFD *base, int count)
582	{
583	while (count--)
584	{
585	base->head = 0;
586	base->events = EV_NONE;
587	base->reify = 0;
588
589	++base;
590	}
591	}
592
593	void inline_speed
594	fd_event (EV_P_ int fd, int revents)	827	fd_event_nc (EV_P_ int fd, int revents)
595	{	828	{
596	ANFD *anfd = anfds + fd;	829	ANFD *anfd = anfds + fd;
597	ev_io *w;	830	ev_io *w;
598		831
599	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	832	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
603	if (ev)	836	if (ev)
604	ev_feed_event (EV_A_ (W)w, ev);	837	ev_feed_event (EV_A_ (W)w, ev);
605	}	838	}
606	}	839	}
607		840
		841	/* do not submit kernel events for fds that have reify set */
		842	/* because that means they changed while we were polling for new events */
		843	inline_speed void
		844	fd_event (EV_P_ int fd, int revents)
		845	{
		846	ANFD *anfd = anfds + fd;
		847
		848	if (expect_true (!anfd->reify))
		849	fd_event_nc (EV_A_ fd, revents);
		850	}
		851
608	void	852	void
609	ev_feed_fd_event (EV_P_ int fd, int revents)	853	ev_feed_fd_event (EV_P_ int fd, int revents)
610	{	854	{
611	if (fd >= 0 && fd < anfdmax)	855	if (fd >= 0 && fd < anfdmax)
612	fd_event (EV_A_ fd, revents);	856	fd_event_nc (EV_A_ fd, revents);
613	}	857	}
614		858
615	void inline_size	859	/* make sure the external fd watch events are in-sync */
		860	/* with the kernel/libev internal state */
		861	inline_size void
616	fd_reify (EV_P)	862	fd_reify (EV_P)
617	{	863	{
618	int i;	864	int i;
619		865
620	for (i = 0; i < fdchangecnt; ++i)	866	for (i = 0; i < fdchangecnt; ++i)
…		…
629	events |= (unsigned char)w->events;	875	events |= (unsigned char)w->events;
630		876
631	#if EV_SELECT_IS_WINSOCKET	877	#if EV_SELECT_IS_WINSOCKET
632	if (events)	878	if (events)
633	{	879	{
634	unsigned long argp;	880	unsigned long arg;
635	#ifdef EV_FD_TO_WIN32_HANDLE	881	#ifdef EV_FD_TO_WIN32_HANDLE
636	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	882	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
637	#else	883	#else
638	anfd->handle = _get_osfhandle (fd);	884	anfd->handle = _get_osfhandle (fd);
639	#endif	885	#endif
640	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	886	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
641	}	887	}
642	#endif	888	#endif
643		889
644	{	890	{
645	unsigned char o_events = anfd->events;	891	unsigned char o_events = anfd->events;
646	unsigned char o_reify = anfd->reify;	892	unsigned char o_reify = anfd->reify;
647		893
648	anfd->reify = 0;	894	anfd->reify = 0;
649	anfd->events = events;	895	anfd->events = events;
650		896
651	if (o_events != events || o_reify & EV_IOFDSET)	897	if (o_events != events || o_reify & EV__IOFDSET)
652	backend_modify (EV_A_ fd, o_events, events);	898	backend_modify (EV_A_ fd, o_events, events);
653	}	899	}
654	}	900	}
655		901
656	fdchangecnt = 0;	902	fdchangecnt = 0;
657	}	903	}
658		904
659	void inline_size	905	/* something about the given fd changed */
		906	inline_size void
660	fd_change (EV_P_ int fd, int flags)	907	fd_change (EV_P_ int fd, int flags)
661	{	908	{
662	unsigned char reify = anfds [fd].reify;	909	unsigned char reify = anfds [fd].reify;
663	anfds [fd].reify |= flags;	910	anfds [fd].reify |= flags;
664		911
…		…
668	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	915	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
669	fdchanges [fdchangecnt - 1] = fd;	916	fdchanges [fdchangecnt - 1] = fd;
670	}	917	}
671	}	918	}
672		919
673	void inline_speed	920	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		921	inline_speed void
674	fd_kill (EV_P_ int fd)	922	fd_kill (EV_P_ int fd)
675	{	923	{
676	ev_io *w;	924	ev_io *w;
677		925
678	while ((w = (ev_io *)anfds [fd].head))	926	while ((w = (ev_io *)anfds [fd].head))
…		…
680	ev_io_stop (EV_A_ w);	928	ev_io_stop (EV_A_ w);
681	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	929	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
682	}	930	}
683	}	931	}
684		932
685	int inline_size	933	/* check whether the given fd is atcually valid, for error recovery */
		934	inline_size int
686	fd_valid (int fd)	935	fd_valid (int fd)
687	{	936	{
688	#ifdef _WIN32	937	#ifdef _WIN32
689	return _get_osfhandle (fd) != -1;	938	return _get_osfhandle (fd) != -1;
690	#else	939	#else
…		…
698	{	947	{
699	int fd;	948	int fd;
700		949
701	for (fd = 0; fd < anfdmax; ++fd)	950	for (fd = 0; fd < anfdmax; ++fd)
702	if (anfds [fd].events)	951	if (anfds [fd].events)
703	if (!fd_valid (fd) == -1 && errno == EBADF)	952	if (!fd_valid (fd) && errno == EBADF)
704	fd_kill (EV_A_ fd);	953	fd_kill (EV_A_ fd);
705	}	954	}
706		955
707	/* called on ENOMEM in select/poll to kill some fds and retry */	956	/* called on ENOMEM in select/poll to kill some fds and retry */
708	static void noinline	957	static void noinline
…		…
712		961
713	for (fd = anfdmax; fd--; )	962	for (fd = anfdmax; fd--; )
714	if (anfds [fd].events)	963	if (anfds [fd].events)
715	{	964	{
716	fd_kill (EV_A_ fd);	965	fd_kill (EV_A_ fd);
717	return;	966	break;
718	}	967	}
719	}	968	}
720		969
721	/* usually called after fork if backend needs to re-arm all fds from scratch */	970	/* usually called after fork if backend needs to re-arm all fds from scratch */
722	static void noinline	971	static void noinline
…		…
726		975
727	for (fd = 0; fd < anfdmax; ++fd)	976	for (fd = 0; fd < anfdmax; ++fd)
728	if (anfds [fd].events)	977	if (anfds [fd].events)
729	{	978	{
730	anfds [fd].events = 0;	979	anfds [fd].events = 0;
		980	anfds [fd].emask = 0;
731	fd_change (EV_A_ fd, EV_IOFDSET | 1);	981	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
732	}	982	}
733	}	983	}
734		984
735	/*****************************************************************************/	985	/*****************************************************************************/
736		986
737	void inline_speed	987	/*
738	upheap (WT *heap, int k)	988	* the heap functions want a real array index. array index 0 uis guaranteed to not
739	{	989	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
740	WT w = heap [k];	990	* the branching factor of the d-tree.
		991	*/
741		992
742	while (k)	993	/*
743	{	994	* at the moment we allow libev the luxury of two heaps,
744	int p = (k - 1) >> 1;	995	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		996	* which is more cache-efficient.
		997	* the difference is about 5% with 50000+ watchers.
		998	*/
		999	#if EV_USE_4HEAP
745		1000
746	if (heap [p]->at <= w->at)	1001	#define DHEAP 4
		1002	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		1003	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		1004	#define UPHEAP_DONE(p,k) ((p) == (k))
		1005
		1006	/* away from the root */
		1007	inline_speed void
		1008	downheap (ANHE *heap, int N, int k)
		1009	{
		1010	ANHE he = heap [k];
		1011	ANHE *E = heap + N + HEAP0;
		1012
		1013	for (;;)
		1014	{
		1015	ev_tstamp minat;
		1016	ANHE *minpos;
		1017	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
		1018
		1019	/* find minimum child */
		1020	if (expect_true (pos + DHEAP - 1 < E))
		1021	{
		1022	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1023	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1024	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1025	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1026	}
		1027	else if (pos < E)
		1028	{
		1029	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1030	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1031	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1032	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1033	}
		1034	else
747	break;	1035	break;
748		1036
		1037	if (ANHE_at (he) <= minat)
		1038	break;
		1039
		1040	heap [k] = *minpos;
		1041	ev_active (ANHE_w (*minpos)) = k;
		1042
		1043	k = minpos - heap;
		1044	}
		1045
		1046	heap [k] = he;
		1047	ev_active (ANHE_w (he)) = k;
		1048	}
		1049
		1050	#else /* 4HEAP */
		1051
		1052	#define HEAP0 1
		1053	#define HPARENT(k) ((k) >> 1)
		1054	#define UPHEAP_DONE(p,k) (!(p))
		1055
		1056	/* away from the root */
		1057	inline_speed void
		1058	downheap (ANHE *heap, int N, int k)
		1059	{
		1060	ANHE he = heap [k];
		1061
		1062	for (;;)
		1063	{
		1064	int c = k << 1;
		1065
		1066	if (c >= N + HEAP0)
		1067	break;
		1068
		1069	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		1070	? 1 : 0;
		1071
		1072	if (ANHE_at (he) <= ANHE_at (heap [c]))
		1073	break;
		1074
		1075	heap [k] = heap [c];
		1076	ev_active (ANHE_w (heap [k])) = k;
		1077
		1078	k = c;
		1079	}
		1080
		1081	heap [k] = he;
		1082	ev_active (ANHE_w (he)) = k;
		1083	}
		1084	#endif
		1085
		1086	/* towards the root */
		1087	inline_speed void
		1088	upheap (ANHE *heap, int k)
		1089	{
		1090	ANHE he = heap [k];
		1091
		1092	for (;;)
		1093	{
		1094	int p = HPARENT (k);
		1095
		1096	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1097	break;
		1098
749	heap [k] = heap [p];	1099	heap [k] = heap [p];
750	((W)heap [k])->active = k + 1;	1100	ev_active (ANHE_w (heap [k])) = k;
751	k = p;	1101	k = p;
752	}	1102	}
753		1103
754	heap [k] = w;	1104	heap [k] = he;
755	((W)heap [k])->active = k + 1;	1105	ev_active (ANHE_w (he)) = k;
756	}	1106	}
757		1107
758	void inline_speed	1108	/* move an element suitably so it is in a correct place */
759	downheap (WT *heap, int N, int k)	1109	inline_size void
760	{
761	WT w = heap [k];
762
763	for (;;)
764	{
765	int c = (k << 1) + 1;
766
767	if (c >= N)
768	break;
769
770	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
771	? 1 : 0;
772
773	if (w->at <= heap [c]->at)
774	break;
775
776	heap [k] = heap [c];
777	((W)heap [k])->active = k + 1;
778
779	k = c;
780	}
781
782	heap [k] = w;
783	((W)heap [k])->active = k + 1;
784	}
785
786	void inline_size
787	adjustheap (WT *heap, int N, int k)	1110	adjustheap (ANHE *heap, int N, int k)
788	{	1111	{
		1112	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
789	upheap (heap, k);	1113	upheap (heap, k);
		1114	else
790	downheap (heap, N, k);	1115	downheap (heap, N, k);
		1116	}
		1117
		1118	/* rebuild the heap: this function is used only once and executed rarely */
		1119	inline_size void
		1120	reheap (ANHE *heap, int N)
		1121	{
		1122	int i;
		1123
		1124	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1125	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1126	for (i = 0; i < N; ++i)
		1127	upheap (heap, i + HEAP0);
791	}	1128	}
792		1129
793	/*****************************************************************************/	1130	/*****************************************************************************/
794		1131
		1132	/* associate signal watchers to a signal signal */
795	typedef struct	1133	typedef struct
796	{	1134	{
		1135	EV_ATOMIC_T pending;
		1136	#if EV_MULTIPLICITY
		1137	EV_P;
		1138	#endif
797	WL head;	1139	WL head;
798	EV_ATOMIC_T gotsig;
799	} ANSIG;	1140	} ANSIG;
800		1141
801	static ANSIG *signals;	1142	static ANSIG signals [EV_NSIG - 1];
802	static int signalmax;
803
804	static EV_ATOMIC_T gotsig;
805
806	void inline_size
807	signals_init (ANSIG *base, int count)
808	{
809	while (count--)
810	{
811	base->head = 0;
812	base->gotsig = 0;
813
814	++base;
815	}
816	}
817		1143
818	/*****************************************************************************/	1144	/*****************************************************************************/
819		1145
820	void inline_speed	1146	/* used to prepare libev internal fd's */
		1147	/* this is not fork-safe */
		1148	inline_speed void
821	fd_intern (int fd)	1149	fd_intern (int fd)
822	{	1150	{
823	#ifdef _WIN32	1151	#ifdef _WIN32
824	int arg = 1;	1152	unsigned long arg = 1;
825	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1153	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
826	#else	1154	#else
827	fcntl (fd, F_SETFD, FD_CLOEXEC);	1155	fcntl (fd, F_SETFD, FD_CLOEXEC);
828	fcntl (fd, F_SETFL, O_NONBLOCK);	1156	fcntl (fd, F_SETFL, O_NONBLOCK);
829	#endif	1157	#endif
830	}	1158	}
831		1159
832	static void noinline	1160	static void noinline
833	evpipe_init (EV_P)	1161	evpipe_init (EV_P)
834	{	1162	{
835	if (!ev_is_active (&pipeev))	1163	if (!ev_is_active (&pipe_w))
836	{	1164	{
837	#if EV_USE_EVENTFD	1165	#if EV_USE_EVENTFD
		1166	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1167	if (evfd < 0 && errno == EINVAL)
838	if ((evfd = eventfd (0, 0)) >= 0)	1168	evfd = eventfd (0, 0);
		1169
		1170	if (evfd >= 0)
839	{	1171	{
840	evpipe [0] = -1;	1172	evpipe [0] = -1;
841	fd_intern (evfd);	1173	fd_intern (evfd); /* doing it twice doesn't hurt */
842	ev_io_set (&pipeev, evfd, EV_READ);	1174	ev_io_set (&pipe_w, evfd, EV_READ);
843	}	1175	}
844	else	1176	else
845	#endif	1177	#endif
846	{	1178	{
847	while (pipe (evpipe))	1179	while (pipe (evpipe))
848	syserr ("(libev) error creating signal/async pipe");	1180	ev_syserr ("(libev) error creating signal/async pipe");
849		1181
850	fd_intern (evpipe [0]);	1182	fd_intern (evpipe [0]);
851	fd_intern (evpipe [1]);	1183	fd_intern (evpipe [1]);
852	ev_io_set (&pipeev, evpipe [0], EV_READ);	1184	ev_io_set (&pipe_w, evpipe [0], EV_READ);
853	}	1185	}
854		1186
855	ev_io_start (EV_A_ &pipeev);	1187	ev_io_start (EV_A_ &pipe_w);
856	ev_unref (EV_A); /* watcher should not keep loop alive */	1188	ev_unref (EV_A); /* watcher should not keep loop alive */
857	}	1189	}
858	}	1190	}
859		1191
860	void inline_size	1192	inline_size void
861	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1193	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
862	{	1194	{
863	if (!*flag)	1195	if (!*flag)
864	{	1196	{
865	int old_errno = errno; /* save errno because write might clobber it */	1197	int old_errno = errno; /* save errno because write might clobber it */
…		…
878		1210
879	errno = old_errno;	1211	errno = old_errno;
880	}	1212	}
881	}	1213	}
882		1214
		1215	/* called whenever the libev signal pipe */
		1216	/* got some events (signal, async) */
883	static void	1217	static void
884	pipecb (EV_P_ ev_io *iow, int revents)	1218	pipecb (EV_P_ ev_io *iow, int revents)
885	{	1219	{
		1220	int i;
		1221
886	#if EV_USE_EVENTFD	1222	#if EV_USE_EVENTFD
887	if (evfd >= 0)	1223	if (evfd >= 0)
888	{	1224	{
889	uint64_t counter = 1;	1225	uint64_t counter;
890	read (evfd, &counter, sizeof (uint64_t));	1226	read (evfd, &counter, sizeof (uint64_t));
891	}	1227	}
892	else	1228	else
893	#endif	1229	#endif
894	{	1230	{
895	char dummy;	1231	char dummy;
896	read (evpipe [0], &dummy, 1);	1232	read (evpipe [0], &dummy, 1);
897	}	1233	}
898		1234
899	if (gotsig && ev_is_default_loop (EV_A))	1235	if (sig_pending)
900	{	1236	{
901	int signum;	1237	sig_pending = 0;
902	gotsig = 0;
903		1238
904	for (signum = signalmax; signum--; )	1239	for (i = EV_NSIG - 1; i--; )
905	if (signals [signum].gotsig)	1240	if (expect_false (signals [i].pending))
906	ev_feed_signal_event (EV_A_ signum + 1);	1241	ev_feed_signal_event (EV_A_ i + 1);
907	}	1242	}
908		1243
909	#if EV_ASYNC_ENABLE	1244	#if EV_ASYNC_ENABLE
910	if (gotasync)	1245	if (async_pending)
911	{	1246	{
912	int i;	1247	async_pending = 0;
913	gotasync = 0;
914		1248
915	for (i = asynccnt; i--; )	1249	for (i = asynccnt; i--; )
916	if (asyncs [i]->sent)	1250	if (asyncs [i]->sent)
917	{	1251	{
918	asyncs [i]->sent = 0;	1252	asyncs [i]->sent = 0;
…		…
926		1260
927	static void	1261	static void
928	ev_sighandler (int signum)	1262	ev_sighandler (int signum)
929	{	1263	{
930	#if EV_MULTIPLICITY	1264	#if EV_MULTIPLICITY
931	struct ev_loop *loop = &default_loop_struct;	1265	EV_P = signals [signum - 1].loop;
932	#endif	1266	#endif
933		1267
934	#if _WIN32	1268	#if _WIN32
935	signal (signum, ev_sighandler);	1269	signal (signum, ev_sighandler);
936	#endif	1270	#endif
937		1271
938	signals [signum - 1].gotsig = 1;	1272	signals [signum - 1].pending = 1;
939	evpipe_write (EV_A_ &gotsig);	1273	evpipe_write (EV_A_ &sig_pending);
940	}	1274	}
941		1275
942	void noinline	1276	void noinline
943	ev_feed_signal_event (EV_P_ int signum)	1277	ev_feed_signal_event (EV_P_ int signum)
944	{	1278	{
945	WL w;	1279	WL w;
946		1280
		1281	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1282	return;
		1283
		1284	--signum;
		1285
947	#if EV_MULTIPLICITY	1286	#if EV_MULTIPLICITY
948	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1287	/* it is permissible to try to feed a signal to the wrong loop */
949	#endif	1288	/* or, likely more useful, feeding a signal nobody is waiting for */
950		1289
951	--signum;	1290	if (expect_false (signals [signum].loop != EV_A))
952
953	if (signum < 0 || signum >= signalmax)
954	return;	1291	return;
		1292	#endif
955		1293
956	signals [signum].gotsig = 0;	1294	signals [signum].pending = 0;
957		1295
958	for (w = signals [signum].head; w; w = w->next)	1296	for (w = signals [signum].head; w; w = w->next)
959	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1297	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
960	}	1298	}
961		1299
		1300	#if EV_USE_SIGNALFD
		1301	static void
		1302	sigfdcb (EV_P_ ev_io *iow, int revents)
		1303	{
		1304	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1305
		1306	for (;;)
		1307	{
		1308	ssize_t res = read (sigfd, si, sizeof (si));
		1309
		1310	/* not ISO-C, as res might be -1, but works with SuS */
		1311	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1312	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1313
		1314	if (res < (ssize_t)sizeof (si))
		1315	break;
		1316	}
		1317	}
		1318	#endif
		1319
962	/*****************************************************************************/	1320	/*****************************************************************************/
963		1321
964	static WL childs [EV_PID_HASHSIZE];	1322	static WL childs [EV_PID_HASHSIZE];
965		1323
966	#ifndef _WIN32	1324	#ifndef _WIN32
…		…
969		1327
970	#ifndef WIFCONTINUED	1328	#ifndef WIFCONTINUED
971	# define WIFCONTINUED(status) 0	1329	# define WIFCONTINUED(status) 0
972	#endif	1330	#endif
973		1331
974	void inline_speed	1332	/* handle a single child status event */
		1333	inline_speed void
975	child_reap (EV_P_ int chain, int pid, int status)	1334	child_reap (EV_P_ int chain, int pid, int status)
976	{	1335	{
977	ev_child *w;	1336	ev_child *w;
978	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1337	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
979		1338
…		…
992		1351
993	#ifndef WCONTINUED	1352	#ifndef WCONTINUED
994	# define WCONTINUED 0	1353	# define WCONTINUED 0
995	#endif	1354	#endif
996		1355
		1356	/* called on sigchld etc., calls waitpid */
997	static void	1357	static void
998	childcb (EV_P_ ev_signal *sw, int revents)	1358	childcb (EV_P_ ev_signal *sw, int revents)
999	{	1359	{
1000	int pid, status;	1360	int pid, status;
1001		1361
…		…
1082	/* kqueue is borked on everything but netbsd apparently */	1442	/* kqueue is borked on everything but netbsd apparently */
1083	/* it usually doesn't work correctly on anything but sockets and pipes */	1443	/* it usually doesn't work correctly on anything but sockets and pipes */
1084	flags &= ~EVBACKEND_KQUEUE;	1444	flags &= ~EVBACKEND_KQUEUE;
1085	#endif	1445	#endif
1086	#ifdef __APPLE__	1446	#ifdef __APPLE__
1087	// flags &= ~EVBACKEND_KQUEUE; for documentation	1447	/* only select works correctly on that "unix-certified" platform */
1088	flags &= ~EVBACKEND_POLL;	1448	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1449	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1089	#endif	1450	#endif
1090		1451
1091	return flags;	1452	return flags;
1092	}	1453	}
1093		1454
…		…
1107	ev_backend (EV_P)	1468	ev_backend (EV_P)
1108	{	1469	{
1109	return backend;	1470	return backend;
1110	}	1471	}
1111		1472
		1473	#if EV_MINIMAL < 2
1112	unsigned int	1474	unsigned int
1113	ev_loop_count (EV_P)	1475	ev_loop_count (EV_P)
1114	{	1476	{
1115	return loop_count;	1477	return loop_count;
1116	}	1478	}
1117		1479
		1480	unsigned int
		1481	ev_loop_depth (EV_P)
		1482	{
		1483	return loop_depth;
		1484	}
		1485
1118	void	1486	void
1119	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1487	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1120	{	1488	{
1121	io_blocktime = interval;	1489	io_blocktime = interval;
1122	}	1490	}
…		…
1125	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1493	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1126	{	1494	{
1127	timeout_blocktime = interval;	1495	timeout_blocktime = interval;
1128	}	1496	}
1129		1497
		1498	void
		1499	ev_set_userdata (EV_P_ void *data)
		1500	{
		1501	userdata = data;
		1502	}
		1503
		1504	void *
		1505	ev_userdata (EV_P)
		1506	{
		1507	return userdata;
		1508	}
		1509
		1510	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1511	{
		1512	invoke_cb = invoke_pending_cb;
		1513	}
		1514
		1515	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1516	{
		1517	release_cb = release;
		1518	acquire_cb = acquire;
		1519	}
		1520	#endif
		1521
		1522	/* initialise a loop structure, must be zero-initialised */
1130	static void noinline	1523	static void noinline
1131	loop_init (EV_P_ unsigned int flags)	1524	loop_init (EV_P_ unsigned int flags)
1132	{	1525	{
1133	if (!backend)	1526	if (!backend)
1134	{	1527	{
		1528	#if EV_USE_REALTIME
		1529	if (!have_realtime)
		1530	{
		1531	struct timespec ts;
		1532
		1533	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1534	have_realtime = 1;
		1535	}
		1536	#endif
		1537
1135	#if EV_USE_MONOTONIC	1538	#if EV_USE_MONOTONIC
		1539	if (!have_monotonic)
1136	{	1540	{
1137	struct timespec ts;	1541	struct timespec ts;
		1542
1138	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1543	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1139	have_monotonic = 1;	1544	have_monotonic = 1;
1140	}	1545	}
1141	#endif	1546	#endif
		1547
		1548	/* pid check not overridable via env */
		1549	#ifndef _WIN32
		1550	if (flags & EVFLAG_FORKCHECK)
		1551	curpid = getpid ();
		1552	#endif
		1553
		1554	if (!(flags & EVFLAG_NOENV)
		1555	&& !enable_secure ()
		1556	&& getenv ("LIBEV_FLAGS"))
		1557	flags = atoi (getenv ("LIBEV_FLAGS"));
1142		1558
1143	ev_rt_now = ev_time ();	1559	ev_rt_now = ev_time ();
1144	mn_now = get_clock ();	1560	mn_now = get_clock ();
1145	now_floor = mn_now;	1561	now_floor = mn_now;
1146	rtmn_diff = ev_rt_now - mn_now;	1562	rtmn_diff = ev_rt_now - mn_now;
		1563	#if EV_MINIMAL < 2
		1564	invoke_cb = ev_invoke_pending;
		1565	#endif
1147		1566
1148	io_blocktime = 0.;	1567	io_blocktime = 0.;
1149	timeout_blocktime = 0.;	1568	timeout_blocktime = 0.;
1150	backend = 0;	1569	backend = 0;
1151	backend_fd = -1;	1570	backend_fd = -1;
1152	gotasync = 0;	1571	sig_pending = 0;
		1572	#if EV_ASYNC_ENABLE
		1573	async_pending = 0;
		1574	#endif
1153	#if EV_USE_INOTIFY	1575	#if EV_USE_INOTIFY
1154	fs_fd = -2;	1576	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1155	#endif	1577	#endif
1156		1578	#if EV_USE_SIGNALFD
1157	/* pid check not overridable via env */	1579	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1158	#ifndef _WIN32
1159	if (flags & EVFLAG_FORKCHECK)
1160	curpid = getpid ();
1161	#endif	1580	#endif
1162		1581
1163	if (!(flags & EVFLAG_NOENV)
1164	&& !enable_secure ()
1165	&& getenv ("LIBEV_FLAGS"))
1166	flags = atoi (getenv ("LIBEV_FLAGS"));
1167
1168	if (!(flags & 0x0000ffffUL))	1582	if (!(flags & 0x0000ffffU))
1169	flags |= ev_recommended_backends ();	1583	flags |= ev_recommended_backends ();
1170		1584
1171	#if EV_USE_PORT	1585	#if EV_USE_PORT
1172	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1586	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1173	#endif	1587	#endif
…		…
1182	#endif	1596	#endif
1183	#if EV_USE_SELECT	1597	#if EV_USE_SELECT
1184	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1598	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1185	#endif	1599	#endif
1186		1600
		1601	ev_prepare_init (&pending_w, pendingcb);
		1602
1187	ev_init (&pipeev, pipecb);	1603	ev_init (&pipe_w, pipecb);
1188	ev_set_priority (&pipeev, EV_MAXPRI);	1604	ev_set_priority (&pipe_w, EV_MAXPRI);
1189	}	1605	}
1190	}	1606	}
1191		1607
		1608	/* free up a loop structure */
1192	static void noinline	1609	static void noinline
1193	loop_destroy (EV_P)	1610	loop_destroy (EV_P)
1194	{	1611	{
1195	int i;	1612	int i;
1196		1613
1197	if (ev_is_active (&pipeev))	1614	if (ev_is_active (&pipe_w))
1198	{	1615	{
1199	ev_ref (EV_A); /* signal watcher */	1616	/*ev_ref (EV_A);*/
1200	ev_io_stop (EV_A_ &pipeev);	1617	/*ev_io_stop (EV_A_ &pipe_w);*/
1201		1618
1202	#if EV_USE_EVENTFD	1619	#if EV_USE_EVENTFD
1203	if (evfd >= 0)	1620	if (evfd >= 0)
1204	close (evfd);	1621	close (evfd);
1205	#endif	1622	#endif
…		…
1209	close (evpipe [0]);	1626	close (evpipe [0]);
1210	close (evpipe [1]);	1627	close (evpipe [1]);
1211	}	1628	}
1212	}	1629	}
1213		1630
		1631	#if EV_USE_SIGNALFD
		1632	if (ev_is_active (&sigfd_w))
		1633	{
		1634	/*ev_ref (EV_A);*/
		1635	/*ev_io_stop (EV_A_ &sigfd_w);*/
		1636
		1637	close (sigfd);
		1638	}
		1639	#endif
		1640
1214	#if EV_USE_INOTIFY	1641	#if EV_USE_INOTIFY
1215	if (fs_fd >= 0)	1642	if (fs_fd >= 0)
1216	close (fs_fd);	1643	close (fs_fd);
1217	#endif	1644	#endif
1218		1645
…		…
1241	#if EV_IDLE_ENABLE	1668	#if EV_IDLE_ENABLE
1242	array_free (idle, [i]);	1669	array_free (idle, [i]);
1243	#endif	1670	#endif
1244	}	1671	}
1245		1672
1246	ev_free (anfds); anfdmax = 0;	1673	ev_free (anfds); anfds = 0; anfdmax = 0;
1247		1674
1248	/* have to use the microsoft-never-gets-it-right macro */	1675	/* have to use the microsoft-never-gets-it-right macro */
		1676	array_free (rfeed, EMPTY);
1249	array_free (fdchange, EMPTY);	1677	array_free (fdchange, EMPTY);
1250	array_free (timer, EMPTY);	1678	array_free (timer, EMPTY);
1251	#if EV_PERIODIC_ENABLE	1679	#if EV_PERIODIC_ENABLE
1252	array_free (periodic, EMPTY);	1680	array_free (periodic, EMPTY);
1253	#endif	1681	#endif
…		…
1261	#endif	1689	#endif
1262		1690
1263	backend = 0;	1691	backend = 0;
1264	}	1692	}
1265		1693
		1694	#if EV_USE_INOTIFY
1266	void inline_size infy_fork (EV_P);	1695	inline_size void infy_fork (EV_P);
		1696	#endif
1267		1697
1268	void inline_size	1698	inline_size void
1269	loop_fork (EV_P)	1699	loop_fork (EV_P)
1270	{	1700	{
1271	#if EV_USE_PORT	1701	#if EV_USE_PORT
1272	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1702	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1273	#endif	1703	#endif
…		…
1279	#endif	1709	#endif
1280	#if EV_USE_INOTIFY	1710	#if EV_USE_INOTIFY
1281	infy_fork (EV_A);	1711	infy_fork (EV_A);
1282	#endif	1712	#endif
1283		1713
1284	if (ev_is_active (&pipeev))	1714	if (ev_is_active (&pipe_w))
1285	{	1715	{
1286	/* this "locks" the handlers against writing to the pipe */	1716	/* this "locks" the handlers against writing to the pipe */
1287	/* while we modify the fd vars */	1717	/* while we modify the fd vars */
1288	gotsig = 1;	1718	sig_pending = 1;
1289	#if EV_ASYNC_ENABLE	1719	#if EV_ASYNC_ENABLE
1290	gotasync = 1;	1720	async_pending = 1;
1291	#endif	1721	#endif
1292		1722
1293	ev_ref (EV_A);	1723	ev_ref (EV_A);
1294	ev_io_stop (EV_A_ &pipeev);	1724	ev_io_stop (EV_A_ &pipe_w);
1295		1725
1296	#if EV_USE_EVENTFD	1726	#if EV_USE_EVENTFD
1297	if (evfd >= 0)	1727	if (evfd >= 0)
1298	close (evfd);	1728	close (evfd);
1299	#endif	1729	#endif
…		…
1304	close (evpipe [1]);	1734	close (evpipe [1]);
1305	}	1735	}
1306		1736
1307	evpipe_init (EV_A);	1737	evpipe_init (EV_A);
1308	/* now iterate over everything, in case we missed something */	1738	/* now iterate over everything, in case we missed something */
1309	pipecb (EV_A_ &pipeev, EV_READ);	1739	pipecb (EV_A_ &pipe_w, EV_READ);
1310	}	1740	}
1311		1741
1312	postfork = 0;	1742	postfork = 0;
1313	}	1743	}
1314		1744
1315	#if EV_MULTIPLICITY	1745	#if EV_MULTIPLICITY
		1746
1316	struct ev_loop *	1747	struct ev_loop *
1317	ev_loop_new (unsigned int flags)	1748	ev_loop_new (unsigned int flags)
1318	{	1749	{
1319	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1750	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1320		1751
1321	memset (loop, 0, sizeof (struct ev_loop));	1752	memset (EV_A, 0, sizeof (struct ev_loop));
1322
1323	loop_init (EV_A_ flags);	1753	loop_init (EV_A_ flags);
1324		1754
1325	if (ev_backend (EV_A))	1755	if (ev_backend (EV_A))
1326	return loop;	1756	return EV_A;
1327		1757
1328	return 0;	1758	return 0;
1329	}	1759	}
1330		1760
1331	void	1761	void
…		…
1338	void	1768	void
1339	ev_loop_fork (EV_P)	1769	ev_loop_fork (EV_P)
1340	{	1770	{
1341	postfork = 1; /* must be in line with ev_default_fork */	1771	postfork = 1; /* must be in line with ev_default_fork */
1342	}	1772	}
		1773	#endif /* multiplicity */
1343		1774
		1775	#if EV_VERIFY
		1776	static void noinline
		1777	verify_watcher (EV_P_ W w)
		1778	{
		1779	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1780
		1781	if (w->pending)
		1782	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1783	}
		1784
		1785	static void noinline
		1786	verify_heap (EV_P_ ANHE *heap, int N)
		1787	{
		1788	int i;
		1789
		1790	for (i = HEAP0; i < N + HEAP0; ++i)
		1791	{
		1792	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1793	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1794	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1795
		1796	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1797	}
		1798	}
		1799
		1800	static void noinline
		1801	array_verify (EV_P_ W *ws, int cnt)
		1802	{
		1803	while (cnt--)
		1804	{
		1805	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1806	verify_watcher (EV_A_ ws [cnt]);
		1807	}
		1808	}
		1809	#endif
		1810
		1811	#if EV_MINIMAL < 2
		1812	void
		1813	ev_loop_verify (EV_P)
		1814	{
		1815	#if EV_VERIFY
		1816	int i;
		1817	WL w;
		1818
		1819	assert (activecnt >= -1);
		1820
		1821	assert (fdchangemax >= fdchangecnt);
		1822	for (i = 0; i < fdchangecnt; ++i)
		1823	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1824
		1825	assert (anfdmax >= 0);
		1826	for (i = 0; i < anfdmax; ++i)
		1827	for (w = anfds [i].head; w; w = w->next)
		1828	{
		1829	verify_watcher (EV_A_ (W)w);
		1830	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1831	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1832	}
		1833
		1834	assert (timermax >= timercnt);
		1835	verify_heap (EV_A_ timers, timercnt);
		1836
		1837	#if EV_PERIODIC_ENABLE
		1838	assert (periodicmax >= periodiccnt);
		1839	verify_heap (EV_A_ periodics, periodiccnt);
		1840	#endif
		1841
		1842	for (i = NUMPRI; i--; )
		1843	{
		1844	assert (pendingmax [i] >= pendingcnt [i]);
		1845	#if EV_IDLE_ENABLE
		1846	assert (idleall >= 0);
		1847	assert (idlemax [i] >= idlecnt [i]);
		1848	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1849	#endif
		1850	}
		1851
		1852	#if EV_FORK_ENABLE
		1853	assert (forkmax >= forkcnt);
		1854	array_verify (EV_A_ (W *)forks, forkcnt);
		1855	#endif
		1856
		1857	#if EV_ASYNC_ENABLE
		1858	assert (asyncmax >= asynccnt);
		1859	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1860	#endif
		1861
		1862	assert (preparemax >= preparecnt);
		1863	array_verify (EV_A_ (W *)prepares, preparecnt);
		1864
		1865	assert (checkmax >= checkcnt);
		1866	array_verify (EV_A_ (W *)checks, checkcnt);
		1867
		1868	# if 0
		1869	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1870	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		1871	# endif
		1872	#endif
		1873	}
1344	#endif	1874	#endif
1345		1875
1346	#if EV_MULTIPLICITY	1876	#if EV_MULTIPLICITY
1347	struct ev_loop *	1877	struct ev_loop *
1348	ev_default_loop_init (unsigned int flags)	1878	ev_default_loop_init (unsigned int flags)
…		…
1352	#endif	1882	#endif
1353	{	1883	{
1354	if (!ev_default_loop_ptr)	1884	if (!ev_default_loop_ptr)
1355	{	1885	{
1356	#if EV_MULTIPLICITY	1886	#if EV_MULTIPLICITY
1357	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1887	EV_P = ev_default_loop_ptr = &default_loop_struct;
1358	#else	1888	#else
1359	ev_default_loop_ptr = 1;	1889	ev_default_loop_ptr = 1;
1360	#endif	1890	#endif
1361		1891
1362	loop_init (EV_A_ flags);	1892	loop_init (EV_A_ flags);
…		…
1379		1909
1380	void	1910	void
1381	ev_default_destroy (void)	1911	ev_default_destroy (void)
1382	{	1912	{
1383	#if EV_MULTIPLICITY	1913	#if EV_MULTIPLICITY
1384	struct ev_loop *loop = ev_default_loop_ptr;	1914	EV_P = ev_default_loop_ptr;
1385	#endif	1915	#endif
		1916
		1917	ev_default_loop_ptr = 0;
1386		1918
1387	#ifndef _WIN32	1919	#ifndef _WIN32
1388	ev_ref (EV_A); /* child watcher */	1920	ev_ref (EV_A); /* child watcher */
1389	ev_signal_stop (EV_A_ &childev);	1921	ev_signal_stop (EV_A_ &childev);
1390	#endif	1922	#endif
…		…
1394		1926
1395	void	1927	void
1396	ev_default_fork (void)	1928	ev_default_fork (void)
1397	{	1929	{
1398	#if EV_MULTIPLICITY	1930	#if EV_MULTIPLICITY
1399	struct ev_loop *loop = ev_default_loop_ptr;	1931	EV_P = ev_default_loop_ptr;
1400	#endif	1932	#endif
1401		1933
1402	if (backend)
1403	postfork = 1; /* must be in line with ev_loop_fork */	1934	postfork = 1; /* must be in line with ev_loop_fork */
1404	}	1935	}
1405		1936
1406	/*****************************************************************************/	1937	/*****************************************************************************/
1407		1938
1408	void	1939	void
1409	ev_invoke (EV_P_ void *w, int revents)	1940	ev_invoke (EV_P_ void *w, int revents)
1410	{	1941	{
1411	EV_CB_INVOKE ((W)w, revents);	1942	EV_CB_INVOKE ((W)w, revents);
1412	}	1943	}
1413		1944
1414	void inline_speed	1945	unsigned int
1415	call_pending (EV_P)	1946	ev_pending_count (EV_P)
		1947	{
		1948	int pri;
		1949	unsigned int count = 0;
		1950
		1951	for (pri = NUMPRI; pri--; )
		1952	count += pendingcnt [pri];
		1953
		1954	return count;
		1955	}
		1956
		1957	void noinline
		1958	ev_invoke_pending (EV_P)
1416	{	1959	{
1417	int pri;	1960	int pri;
1418		1961
1419	for (pri = NUMPRI; pri--; )	1962	for (pri = NUMPRI; pri--; )
1420	while (pendingcnt [pri])	1963	while (pendingcnt [pri])
1421	{	1964	{
1422	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1965	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1423		1966
1424	if (expect_true (p->w))
1425	{
1426	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1967	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1968	/* ^ this is no longer true, as pending_w could be here */
1427		1969
1428	p->w->pending = 0;	1970	p->w->pending = 0;
1429	EV_CB_INVOKE (p->w, p->events);	1971	EV_CB_INVOKE (p->w, p->events);
1430	}	1972	EV_FREQUENT_CHECK;
1431	}	1973	}
1432	}	1974	}
1433		1975
1434	void inline_size
1435	timers_reify (EV_P)
1436	{
1437	while (timercnt && ((WT)timers [0])->at <= mn_now)
1438	{
1439	ev_timer *w = (ev_timer *)timers [0];
1440
1441	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1442
1443	/* first reschedule or stop timer */
1444	if (w->repeat)
1445	{
1446	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1447
1448	((WT)w)->at += w->repeat;
1449	if (((WT)w)->at < mn_now)
1450	((WT)w)->at = mn_now;
1451
1452	downheap (timers, timercnt, 0);
1453	}
1454	else
1455	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1456
1457	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1458	}
1459	}
1460
1461	#if EV_PERIODIC_ENABLE
1462	void inline_size
1463	periodics_reify (EV_P)
1464	{
1465	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1466	{
1467	ev_periodic *w = (ev_periodic *)periodics [0];
1468
1469	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1470
1471	/* first reschedule or stop timer */
1472	if (w->reschedule_cb)
1473	{
1474	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1475	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1476	downheap (periodics, periodiccnt, 0);
1477	}
1478	else if (w->interval)
1479	{
1480	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1481	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1482	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1483	downheap (periodics, periodiccnt, 0);
1484	}
1485	else
1486	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1487
1488	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1489	}
1490	}
1491
1492	static void noinline
1493	periodics_reschedule (EV_P)
1494	{
1495	int i;
1496
1497	/* adjust periodics after time jump */
1498	for (i = 0; i < periodiccnt; ++i)
1499	{
1500	ev_periodic *w = (ev_periodic *)periodics [i];
1501
1502	if (w->reschedule_cb)
1503	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1504	else if (w->interval)
1505	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1506	}
1507
1508	/* now rebuild the heap */
1509	for (i = periodiccnt >> 1; i--; )
1510	downheap (periodics, periodiccnt, i);
1511	}
1512	#endif
1513
1514	#if EV_IDLE_ENABLE	1976	#if EV_IDLE_ENABLE
1515	void inline_size	1977	/* make idle watchers pending. this handles the "call-idle */
		1978	/* only when higher priorities are idle" logic */
		1979	inline_size void
1516	idle_reify (EV_P)	1980	idle_reify (EV_P)
1517	{	1981	{
1518	if (expect_false (idleall))	1982	if (expect_false (idleall))
1519	{	1983	{
1520	int pri;	1984	int pri;
…		…
1532	}	1996	}
1533	}	1997	}
1534	}	1998	}
1535	#endif	1999	#endif
1536		2000
1537	void inline_speed	2001	/* make timers pending */
		2002	inline_size void
		2003	timers_reify (EV_P)
		2004	{
		2005	EV_FREQUENT_CHECK;
		2006
		2007	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		2008	{
		2009	do
		2010	{
		2011	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2012
		2013	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2014
		2015	/* first reschedule or stop timer */
		2016	if (w->repeat)
		2017	{
		2018	ev_at (w) += w->repeat;
		2019	if (ev_at (w) < mn_now)
		2020	ev_at (w) = mn_now;
		2021
		2022	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		2023
		2024	ANHE_at_cache (timers [HEAP0]);
		2025	downheap (timers, timercnt, HEAP0);
		2026	}
		2027	else
		2028	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2029
		2030	EV_FREQUENT_CHECK;
		2031	feed_reverse (EV_A_ (W)w);
		2032	}
		2033	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
		2034
		2035	feed_reverse_done (EV_A_ EV_TIMEOUT);
		2036	}
		2037	}
		2038
		2039	#if EV_PERIODIC_ENABLE
		2040	/* make periodics pending */
		2041	inline_size void
		2042	periodics_reify (EV_P)
		2043	{
		2044	EV_FREQUENT_CHECK;
		2045
		2046	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		2047	{
		2048	int feed_count = 0;
		2049
		2050	do
		2051	{
		2052	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2053
		2054	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2055
		2056	/* first reschedule or stop timer */
		2057	if (w->reschedule_cb)
		2058	{
		2059	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2060
		2061	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		2062
		2063	ANHE_at_cache (periodics [HEAP0]);
		2064	downheap (periodics, periodiccnt, HEAP0);
		2065	}
		2066	else if (w->interval)
		2067	{
		2068	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2069	/* if next trigger time is not sufficiently in the future, put it there */
		2070	/* this might happen because of floating point inexactness */
		2071	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2072	{
		2073	ev_at (w) += w->interval;
		2074
		2075	/* if interval is unreasonably low we might still have a time in the past */
		2076	/* so correct this. this will make the periodic very inexact, but the user */
		2077	/* has effectively asked to get triggered more often than possible */
		2078	if (ev_at (w) < ev_rt_now)
		2079	ev_at (w) = ev_rt_now;
		2080	}
		2081
		2082	ANHE_at_cache (periodics [HEAP0]);
		2083	downheap (periodics, periodiccnt, HEAP0);
		2084	}
		2085	else
		2086	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2087
		2088	EV_FREQUENT_CHECK;
		2089	feed_reverse (EV_A_ (W)w);
		2090	}
		2091	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
		2092
		2093	feed_reverse_done (EV_A_ EV_PERIODIC);
		2094	}
		2095	}
		2096
		2097	/* simply recalculate all periodics */
		2098	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
		2099	static void noinline
		2100	periodics_reschedule (EV_P)
		2101	{
		2102	int i;
		2103
		2104	/* adjust periodics after time jump */
		2105	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		2106	{
		2107	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		2108
		2109	if (w->reschedule_cb)
		2110	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2111	else if (w->interval)
		2112	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2113
		2114	ANHE_at_cache (periodics [i]);
		2115	}
		2116
		2117	reheap (periodics, periodiccnt);
		2118	}
		2119	#endif
		2120
		2121	/* adjust all timers by a given offset */
		2122	static void noinline
		2123	timers_reschedule (EV_P_ ev_tstamp adjust)
		2124	{
		2125	int i;
		2126
		2127	for (i = 0; i < timercnt; ++i)
		2128	{
		2129	ANHE *he = timers + i + HEAP0;
		2130	ANHE_w (*he)->at += adjust;
		2131	ANHE_at_cache (*he);
		2132	}
		2133	}
		2134
		2135	/* fetch new monotonic and realtime times from the kernel */
		2136	/* also detetc if there was a timejump, and act accordingly */
		2137	inline_speed void
1538	time_update (EV_P_ ev_tstamp max_block)	2138	time_update (EV_P_ ev_tstamp max_block)
1539	{	2139	{
1540	int i;
1541
1542	#if EV_USE_MONOTONIC	2140	#if EV_USE_MONOTONIC
1543	if (expect_true (have_monotonic))	2141	if (expect_true (have_monotonic))
1544	{	2142	{
		2143	int i;
1545	ev_tstamp odiff = rtmn_diff;	2144	ev_tstamp odiff = rtmn_diff;
1546		2145
1547	mn_now = get_clock ();	2146	mn_now = get_clock ();
1548		2147
1549	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2148	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1567	*/	2166	*/
1568	for (i = 4; --i; )	2167	for (i = 4; --i; )
1569	{	2168	{
1570	rtmn_diff = ev_rt_now - mn_now;	2169	rtmn_diff = ev_rt_now - mn_now;
1571		2170
1572	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	2171	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1573	return; /* all is well */	2172	return; /* all is well */
1574		2173
1575	ev_rt_now = ev_time ();	2174	ev_rt_now = ev_time ();
1576	mn_now = get_clock ();	2175	mn_now = get_clock ();
1577	now_floor = mn_now;	2176	now_floor = mn_now;
1578	}	2177	}
1579		2178
		2179	/* no timer adjustment, as the monotonic clock doesn't jump */
		2180	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1580	# if EV_PERIODIC_ENABLE	2181	# if EV_PERIODIC_ENABLE
1581	periodics_reschedule (EV_A);	2182	periodics_reschedule (EV_A);
1582	# endif	2183	# endif
1583	/* no timer adjustment, as the monotonic clock doesn't jump */
1584	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1585	}	2184	}
1586	else	2185	else
1587	#endif	2186	#endif
1588	{	2187	{
1589	ev_rt_now = ev_time ();	2188	ev_rt_now = ev_time ();
1590		2189
1591	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2190	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1592	{	2191	{
		2192	/* adjust timers. this is easy, as the offset is the same for all of them */
		2193	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1593	#if EV_PERIODIC_ENABLE	2194	#if EV_PERIODIC_ENABLE
1594	periodics_reschedule (EV_A);	2195	periodics_reschedule (EV_A);
1595	#endif	2196	#endif
1596	/* adjust timers. this is easy, as the offset is the same for all of them */
1597	for (i = 0; i < timercnt; ++i)
1598	((WT)timers [i])->at += ev_rt_now - mn_now;
1599	}	2197	}
1600		2198
1601	mn_now = ev_rt_now;	2199	mn_now = ev_rt_now;
1602	}	2200	}
1603	}	2201	}
1604		2202
1605	void	2203	void
1606	ev_ref (EV_P)
1607	{
1608	++activecnt;
1609	}
1610
1611	void
1612	ev_unref (EV_P)
1613	{
1614	--activecnt;
1615	}
1616
1617	static int loop_done;
1618
1619	void
1620	ev_loop (EV_P_ int flags)	2204	ev_loop (EV_P_ int flags)
1621	{	2205	{
		2206	#if EV_MINIMAL < 2
		2207	++loop_depth;
		2208	#endif
		2209
		2210	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2211
1622	loop_done = EVUNLOOP_CANCEL;	2212	loop_done = EVUNLOOP_CANCEL;
1623		2213
1624	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2214	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1625		2215
1626	do	2216	do
1627	{	2217	{
		2218	#if EV_VERIFY >= 2
		2219	ev_loop_verify (EV_A);
		2220	#endif
		2221
1628	#ifndef _WIN32	2222	#ifndef _WIN32
1629	if (expect_false (curpid)) /* penalise the forking check even more */	2223	if (expect_false (curpid)) /* penalise the forking check even more */
1630	if (expect_false (getpid () != curpid))	2224	if (expect_false (getpid () != curpid))
1631	{	2225	{
1632	curpid = getpid ();	2226	curpid = getpid ();
…		…
1638	/* we might have forked, so queue fork handlers */	2232	/* we might have forked, so queue fork handlers */
1639	if (expect_false (postfork))	2233	if (expect_false (postfork))
1640	if (forkcnt)	2234	if (forkcnt)
1641	{	2235	{
1642	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2236	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1643	call_pending (EV_A);	2237	EV_INVOKE_PENDING;
1644	}	2238	}
1645	#endif	2239	#endif
1646		2240
1647	/* queue prepare watchers (and execute them) */	2241	/* queue prepare watchers (and execute them) */
1648	if (expect_false (preparecnt))	2242	if (expect_false (preparecnt))
1649	{	2243	{
1650	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2244	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1651	call_pending (EV_A);	2245	EV_INVOKE_PENDING;
1652	}	2246	}
1653		2247
1654	if (expect_false (!activecnt))	2248	if (expect_false (loop_done))
1655	break;	2249	break;
1656		2250
1657	/* we might have forked, so reify kernel state if necessary */	2251	/* we might have forked, so reify kernel state if necessary */
1658	if (expect_false (postfork))	2252	if (expect_false (postfork))
1659	loop_fork (EV_A);	2253	loop_fork (EV_A);
…		…
1666	ev_tstamp waittime = 0.;	2260	ev_tstamp waittime = 0.;
1667	ev_tstamp sleeptime = 0.;	2261	ev_tstamp sleeptime = 0.;
1668		2262
1669	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2263	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1670	{	2264	{
		2265	/* remember old timestamp for io_blocktime calculation */
		2266	ev_tstamp prev_mn_now = mn_now;
		2267
1671	/* update time to cancel out callback processing overhead */	2268	/* update time to cancel out callback processing overhead */
1672	time_update (EV_A_ 1e100);	2269	time_update (EV_A_ 1e100);
1673		2270
1674	waittime = MAX_BLOCKTIME;	2271	waittime = MAX_BLOCKTIME;
1675		2272
1676	if (timercnt)	2273	if (timercnt)
1677	{	2274	{
1678	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	2275	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1679	if (waittime > to) waittime = to;	2276	if (waittime > to) waittime = to;
1680	}	2277	}
1681		2278
1682	#if EV_PERIODIC_ENABLE	2279	#if EV_PERIODIC_ENABLE
1683	if (periodiccnt)	2280	if (periodiccnt)
1684	{	2281	{
1685	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	2282	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1686	if (waittime > to) waittime = to;	2283	if (waittime > to) waittime = to;
1687	}	2284	}
1688	#endif	2285	#endif
1689		2286
		2287	/* don't let timeouts decrease the waittime below timeout_blocktime */
1690	if (expect_false (waittime < timeout_blocktime))	2288	if (expect_false (waittime < timeout_blocktime))
1691	waittime = timeout_blocktime;	2289	waittime = timeout_blocktime;
1692		2290
1693	sleeptime = waittime - backend_fudge;	2291	/* extra check because io_blocktime is commonly 0 */
1694
1695	if (expect_true (sleeptime > io_blocktime))	2292	if (expect_false (io_blocktime))
1696	sleeptime = io_blocktime;
1697
1698	if (sleeptime)
1699	{	2293	{
		2294	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2295
		2296	if (sleeptime > waittime - backend_fudge)
		2297	sleeptime = waittime - backend_fudge;
		2298
		2299	if (expect_true (sleeptime > 0.))
		2300	{
1700	ev_sleep (sleeptime);	2301	ev_sleep (sleeptime);
1701	waittime -= sleeptime;	2302	waittime -= sleeptime;
		2303	}
1702	}	2304	}
1703	}	2305	}
1704		2306
		2307	#if EV_MINIMAL < 2
1705	++loop_count;	2308	++loop_count;
		2309	#endif
		2310	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1706	backend_poll (EV_A_ waittime);	2311	backend_poll (EV_A_ waittime);
		2312	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1707		2313
1708	/* update ev_rt_now, do magic */	2314	/* update ev_rt_now, do magic */
1709	time_update (EV_A_ waittime + sleeptime);	2315	time_update (EV_A_ waittime + sleeptime);
1710	}	2316	}
1711		2317
…		…
1722		2328
1723	/* queue check watchers, to be executed first */	2329	/* queue check watchers, to be executed first */
1724	if (expect_false (checkcnt))	2330	if (expect_false (checkcnt))
1725	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2331	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1726		2332
1727	call_pending (EV_A);	2333	EV_INVOKE_PENDING;
1728	}	2334	}
1729	while (expect_true (	2335	while (expect_true (
1730	activecnt	2336	activecnt
1731	&& !loop_done	2337	&& !loop_done
1732	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2338	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1733	));	2339	));
1734		2340
1735	if (loop_done == EVUNLOOP_ONE)	2341	if (loop_done == EVUNLOOP_ONE)
1736	loop_done = EVUNLOOP_CANCEL;	2342	loop_done = EVUNLOOP_CANCEL;
		2343
		2344	#if EV_MINIMAL < 2
		2345	--loop_depth;
		2346	#endif
1737	}	2347	}
1738		2348
1739	void	2349	void
1740	ev_unloop (EV_P_ int how)	2350	ev_unloop (EV_P_ int how)
1741	{	2351	{
1742	loop_done = how;	2352	loop_done = how;
1743	}	2353	}
1744		2354
		2355	void
		2356	ev_ref (EV_P)
		2357	{
		2358	++activecnt;
		2359	}
		2360
		2361	void
		2362	ev_unref (EV_P)
		2363	{
		2364	--activecnt;
		2365	}
		2366
		2367	void
		2368	ev_now_update (EV_P)
		2369	{
		2370	time_update (EV_A_ 1e100);
		2371	}
		2372
		2373	void
		2374	ev_suspend (EV_P)
		2375	{
		2376	ev_now_update (EV_A);
		2377	}
		2378
		2379	void
		2380	ev_resume (EV_P)
		2381	{
		2382	ev_tstamp mn_prev = mn_now;
		2383
		2384	ev_now_update (EV_A);
		2385	timers_reschedule (EV_A_ mn_now - mn_prev);
		2386	#if EV_PERIODIC_ENABLE
		2387	/* TODO: really do this? */
		2388	periodics_reschedule (EV_A);
		2389	#endif
		2390	}
		2391
1745	/*****************************************************************************/	2392	/*****************************************************************************/
		2393	/* singly-linked list management, used when the expected list length is short */
1746		2394
1747	void inline_size	2395	inline_size void
1748	wlist_add (WL *head, WL elem)	2396	wlist_add (WL *head, WL elem)
1749	{	2397	{
1750	elem->next = *head;	2398	elem->next = *head;
1751	*head = elem;	2399	*head = elem;
1752	}	2400	}
1753		2401
1754	void inline_size	2402	inline_size void
1755	wlist_del (WL *head, WL elem)	2403	wlist_del (WL *head, WL elem)
1756	{	2404	{
1757	while (*head)	2405	while (*head)
1758	{	2406	{
1759	if (*head == elem)	2407	if (expect_true (*head == elem))
1760	{	2408	{
1761	*head = elem->next;	2409	*head = elem->next;
1762	return;	2410	break;
1763	}	2411	}
1764		2412
1765	head = &(*head)->next;	2413	head = &(*head)->next;
1766	}	2414	}
1767	}	2415	}
1768		2416
1769	void inline_speed	2417	/* internal, faster, version of ev_clear_pending */
		2418	inline_speed void
1770	clear_pending (EV_P_ W w)	2419	clear_pending (EV_P_ W w)
1771	{	2420	{
1772	if (w->pending)	2421	if (w->pending)
1773	{	2422	{
1774	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2423	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1775	w->pending = 0;	2424	w->pending = 0;
1776	}	2425	}
1777	}	2426	}
1778		2427
1779	int	2428	int
…		…
1783	int pending = w_->pending;	2432	int pending = w_->pending;
1784		2433
1785	if (expect_true (pending))	2434	if (expect_true (pending))
1786	{	2435	{
1787	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2436	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2437	p->w = (W)&pending_w;
1788	w_->pending = 0;	2438	w_->pending = 0;
1789	p->w = 0;
1790	return p->events;	2439	return p->events;
1791	}	2440	}
1792	else	2441	else
1793	return 0;	2442	return 0;
1794	}	2443	}
1795		2444
1796	void inline_size	2445	inline_size void
1797	pri_adjust (EV_P_ W w)	2446	pri_adjust (EV_P_ W w)
1798	{	2447	{
1799	int pri = w->priority;	2448	int pri = ev_priority (w);
1800	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2449	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1801	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2450	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1802	w->priority = pri;	2451	ev_set_priority (w, pri);
1803	}	2452	}
1804		2453
1805	void inline_speed	2454	inline_speed void
1806	ev_start (EV_P_ W w, int active)	2455	ev_start (EV_P_ W w, int active)
1807	{	2456	{
1808	pri_adjust (EV_A_ w);	2457	pri_adjust (EV_A_ w);
1809	w->active = active;	2458	w->active = active;
1810	ev_ref (EV_A);	2459	ev_ref (EV_A);
1811	}	2460	}
1812		2461
1813	void inline_size	2462	inline_size void
1814	ev_stop (EV_P_ W w)	2463	ev_stop (EV_P_ W w)
1815	{	2464	{
1816	ev_unref (EV_A);	2465	ev_unref (EV_A);
1817	w->active = 0;	2466	w->active = 0;
1818	}	2467	}
…		…
1825	int fd = w->fd;	2474	int fd = w->fd;
1826		2475
1827	if (expect_false (ev_is_active (w)))	2476	if (expect_false (ev_is_active (w)))
1828	return;	2477	return;
1829		2478
1830	assert (("ev_io_start called with negative fd", fd >= 0));	2479	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2480	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2481
		2482	EV_FREQUENT_CHECK;
1831		2483
1832	ev_start (EV_A_ (W)w, 1);	2484	ev_start (EV_A_ (W)w, 1);
1833	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2485	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1834	wlist_add (&anfds[fd].head, (WL)w);	2486	wlist_add (&anfds[fd].head, (WL)w);
1835		2487
1836	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2488	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1837	w->events &= ~EV_IOFDSET;	2489	w->events &= ~EV__IOFDSET;
		2490
		2491	EV_FREQUENT_CHECK;
1838	}	2492	}
1839		2493
1840	void noinline	2494	void noinline
1841	ev_io_stop (EV_P_ ev_io *w)	2495	ev_io_stop (EV_P_ ev_io *w)
1842	{	2496	{
1843	clear_pending (EV_A_ (W)w);	2497	clear_pending (EV_A_ (W)w);
1844	if (expect_false (!ev_is_active (w)))	2498	if (expect_false (!ev_is_active (w)))
1845	return;	2499	return;
1846		2500
1847	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2501	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2502
		2503	EV_FREQUENT_CHECK;
1848		2504
1849	wlist_del (&anfds[w->fd].head, (WL)w);	2505	wlist_del (&anfds[w->fd].head, (WL)w);
1850	ev_stop (EV_A_ (W)w);	2506	ev_stop (EV_A_ (W)w);
1851		2507
1852	fd_change (EV_A_ w->fd, 1);	2508	fd_change (EV_A_ w->fd, 1);
		2509
		2510	EV_FREQUENT_CHECK;
1853	}	2511	}
1854		2512
1855	void noinline	2513	void noinline
1856	ev_timer_start (EV_P_ ev_timer *w)	2514	ev_timer_start (EV_P_ ev_timer *w)
1857	{	2515	{
1858	if (expect_false (ev_is_active (w)))	2516	if (expect_false (ev_is_active (w)))
1859	return;	2517	return;
1860		2518
1861	((WT)w)->at += mn_now;	2519	ev_at (w) += mn_now;
1862		2520
1863	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2521	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1864		2522
		2523	EV_FREQUENT_CHECK;
		2524
		2525	++timercnt;
1865	ev_start (EV_A_ (W)w, ++timercnt);	2526	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1866	array_needsize (WT, timers, timermax, timercnt, EMPTY2);	2527	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1867	timers [timercnt - 1] = (WT)w;	2528	ANHE_w (timers [ev_active (w)]) = (WT)w;
1868	upheap (timers, timercnt - 1);	2529	ANHE_at_cache (timers [ev_active (w)]);
		2530	upheap (timers, ev_active (w));
1869		2531
		2532	EV_FREQUENT_CHECK;
		2533
1870	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	2534	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1871	}	2535	}
1872		2536
1873	void noinline	2537	void noinline
1874	ev_timer_stop (EV_P_ ev_timer *w)	2538	ev_timer_stop (EV_P_ ev_timer *w)
1875	{	2539	{
1876	clear_pending (EV_A_ (W)w);	2540	clear_pending (EV_A_ (W)w);
1877	if (expect_false (!ev_is_active (w)))	2541	if (expect_false (!ev_is_active (w)))
1878	return;	2542	return;
1879		2543
1880	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));	2544	EV_FREQUENT_CHECK;
1881		2545
1882	{	2546	{
1883	int active = ((W)w)->active;	2547	int active = ev_active (w);
1884		2548
		2549	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2550
		2551	--timercnt;
		2552
1885	if (expect_true (--active < --timercnt))	2553	if (expect_true (active < timercnt + HEAP0))
1886	{	2554	{
1887	timers [active] = timers [timercnt];	2555	timers [active] = timers [timercnt + HEAP0];
1888	adjustheap (timers, timercnt, active);	2556	adjustheap (timers, timercnt, active);
1889	}	2557	}
1890	}	2558	}
1891		2559
1892	((WT)w)->at -= mn_now;	2560	EV_FREQUENT_CHECK;
		2561
		2562	ev_at (w) -= mn_now;
1893		2563
1894	ev_stop (EV_A_ (W)w);	2564	ev_stop (EV_A_ (W)w);
1895	}	2565	}
1896		2566
1897	void noinline	2567	void noinline
1898	ev_timer_again (EV_P_ ev_timer *w)	2568	ev_timer_again (EV_P_ ev_timer *w)
1899	{	2569	{
		2570	EV_FREQUENT_CHECK;
		2571
1900	if (ev_is_active (w))	2572	if (ev_is_active (w))
1901	{	2573	{
1902	if (w->repeat)	2574	if (w->repeat)
1903	{	2575	{
1904	((WT)w)->at = mn_now + w->repeat;	2576	ev_at (w) = mn_now + w->repeat;
		2577	ANHE_at_cache (timers [ev_active (w)]);
1905	adjustheap (timers, timercnt, ((W)w)->active - 1);	2578	adjustheap (timers, timercnt, ev_active (w));
1906	}	2579	}
1907	else	2580	else
1908	ev_timer_stop (EV_A_ w);	2581	ev_timer_stop (EV_A_ w);
1909	}	2582	}
1910	else if (w->repeat)	2583	else if (w->repeat)
1911	{	2584	{
1912	w->at = w->repeat;	2585	ev_at (w) = w->repeat;
1913	ev_timer_start (EV_A_ w);	2586	ev_timer_start (EV_A_ w);
1914	}	2587	}
		2588
		2589	EV_FREQUENT_CHECK;
		2590	}
		2591
		2592	ev_tstamp
		2593	ev_timer_remaining (EV_P_ ev_timer *w)
		2594	{
		2595	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1915	}	2596	}
1916		2597
1917	#if EV_PERIODIC_ENABLE	2598	#if EV_PERIODIC_ENABLE
1918	void noinline	2599	void noinline
1919	ev_periodic_start (EV_P_ ev_periodic *w)	2600	ev_periodic_start (EV_P_ ev_periodic *w)
1920	{	2601	{
1921	if (expect_false (ev_is_active (w)))	2602	if (expect_false (ev_is_active (w)))
1922	return;	2603	return;
1923		2604
1924	if (w->reschedule_cb)	2605	if (w->reschedule_cb)
1925	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2606	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1926	else if (w->interval)	2607	else if (w->interval)
1927	{	2608	{
1928	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2609	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1929	/* this formula differs from the one in periodic_reify because we do not always round up */	2610	/* this formula differs from the one in periodic_reify because we do not always round up */
1930	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2611	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1931	}	2612	}
1932	else	2613	else
1933	((WT)w)->at = w->offset;	2614	ev_at (w) = w->offset;
1934		2615
		2616	EV_FREQUENT_CHECK;
		2617
		2618	++periodiccnt;
1935	ev_start (EV_A_ (W)w, ++periodiccnt);	2619	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1936	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);	2620	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1937	periodics [periodiccnt - 1] = (WT)w;	2621	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1938	upheap (periodics, periodiccnt - 1);	2622	ANHE_at_cache (periodics [ev_active (w)]);
		2623	upheap (periodics, ev_active (w));
1939		2624
		2625	EV_FREQUENT_CHECK;
		2626
1940	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2627	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1941	}	2628	}
1942		2629
1943	void noinline	2630	void noinline
1944	ev_periodic_stop (EV_P_ ev_periodic *w)	2631	ev_periodic_stop (EV_P_ ev_periodic *w)
1945	{	2632	{
1946	clear_pending (EV_A_ (W)w);	2633	clear_pending (EV_A_ (W)w);
1947	if (expect_false (!ev_is_active (w)))	2634	if (expect_false (!ev_is_active (w)))
1948	return;	2635	return;
1949		2636
1950	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));	2637	EV_FREQUENT_CHECK;
1951		2638
1952	{	2639	{
1953	int active = ((W)w)->active;	2640	int active = ev_active (w);
1954		2641
		2642	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2643
		2644	--periodiccnt;
		2645
1955	if (expect_true (--active < --periodiccnt))	2646	if (expect_true (active < periodiccnt + HEAP0))
1956	{	2647	{
1957	periodics [active] = periodics [periodiccnt];	2648	periodics [active] = periodics [periodiccnt + HEAP0];
1958	adjustheap (periodics, periodiccnt, active);	2649	adjustheap (periodics, periodiccnt, active);
1959	}	2650	}
1960	}	2651	}
1961		2652
		2653	EV_FREQUENT_CHECK;
		2654
1962	ev_stop (EV_A_ (W)w);	2655	ev_stop (EV_A_ (W)w);
1963	}	2656	}
1964		2657
1965	void noinline	2658	void noinline
1966	ev_periodic_again (EV_P_ ev_periodic *w)	2659	ev_periodic_again (EV_P_ ev_periodic *w)
…		…
1976	#endif	2669	#endif
1977		2670
1978	void noinline	2671	void noinline
1979	ev_signal_start (EV_P_ ev_signal *w)	2672	ev_signal_start (EV_P_ ev_signal *w)
1980	{	2673	{
1981	#if EV_MULTIPLICITY
1982	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1983	#endif
1984	if (expect_false (ev_is_active (w)))	2674	if (expect_false (ev_is_active (w)))
1985	return;	2675	return;
1986		2676
1987	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2677	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1988		2678
1989	evpipe_init (EV_A);	2679	#if EV_MULTIPLICITY
		2680	assert (("libev: a signal must not be attached to two different loops",
		2681	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
1990		2682
		2683	signals [w->signum - 1].loop = EV_A;
		2684	#endif
		2685
		2686	EV_FREQUENT_CHECK;
		2687
		2688	#if EV_USE_SIGNALFD
		2689	if (sigfd == -2)
1991	{	2690	{
1992	#ifndef _WIN32	2691	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
1993	sigset_t full, prev;	2692	if (sigfd < 0 && errno == EINVAL)
1994	sigfillset (&full);	2693	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
1995	sigprocmask (SIG_SETMASK, &full, &prev);
1996	#endif
1997		2694
1998	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2695	if (sigfd >= 0)
		2696	{
		2697	fd_intern (sigfd); /* doing it twice will not hurt */
1999		2698
2000	#ifndef _WIN32	2699	sigemptyset (&sigfd_set);
2001	sigprocmask (SIG_SETMASK, &prev, 0);	2700
2002	#endif	2701	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2702	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2703	ev_io_start (EV_A_ &sigfd_w);
		2704	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2705	}
2003	}	2706	}
		2707
		2708	if (sigfd >= 0)
		2709	{
		2710	/* TODO: check .head */
		2711	sigaddset (&sigfd_set, w->signum);
		2712	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2713
		2714	signalfd (sigfd, &sigfd_set, 0);
		2715	}
		2716	#endif
2004		2717
2005	ev_start (EV_A_ (W)w, 1);	2718	ev_start (EV_A_ (W)w, 1);
2006	wlist_add (&signals [w->signum - 1].head, (WL)w);	2719	wlist_add (&signals [w->signum - 1].head, (WL)w);
2007		2720
2008	if (!((WL)w)->next)	2721	if (!((WL)w)->next)
		2722	# if EV_USE_SIGNALFD
		2723	if (sigfd < 0) /*TODO*/
		2724	# endif
2009	{	2725	{
2010	#if _WIN32	2726	# if _WIN32
2011	signal (w->signum, ev_sighandler);	2727	signal (w->signum, ev_sighandler);
2012	#else	2728	# else
2013	struct sigaction sa;	2729	struct sigaction sa;
		2730
		2731	evpipe_init (EV_A);
		2732
2014	sa.sa_handler = ev_sighandler;	2733	sa.sa_handler = ev_sighandler;
2015	sigfillset (&sa.sa_mask);	2734	sigfillset (&sa.sa_mask);
2016	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2735	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2017	sigaction (w->signum, &sa, 0);	2736	sigaction (w->signum, &sa, 0);
		2737
		2738	sigemptyset (&sa.sa_mask);
		2739	sigaddset (&sa.sa_mask, w->signum);
		2740	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2018	#endif	2741	#endif
2019	}	2742	}
		2743
		2744	EV_FREQUENT_CHECK;
2020	}	2745	}
2021		2746
2022	void noinline	2747	void noinline
2023	ev_signal_stop (EV_P_ ev_signal *w)	2748	ev_signal_stop (EV_P_ ev_signal *w)
2024	{	2749	{
2025	clear_pending (EV_A_ (W)w);	2750	clear_pending (EV_A_ (W)w);
2026	if (expect_false (!ev_is_active (w)))	2751	if (expect_false (!ev_is_active (w)))
2027	return;	2752	return;
2028		2753
		2754	EV_FREQUENT_CHECK;
		2755
2029	wlist_del (&signals [w->signum - 1].head, (WL)w);	2756	wlist_del (&signals [w->signum - 1].head, (WL)w);
2030	ev_stop (EV_A_ (W)w);	2757	ev_stop (EV_A_ (W)w);
2031		2758
2032	if (!signals [w->signum - 1].head)	2759	if (!signals [w->signum - 1].head)
		2760	{
		2761	#if EV_MULTIPLICITY
		2762	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2763	#endif
		2764	#if EV_USE_SIGNALFD
		2765	if (sigfd >= 0)
		2766	{
		2767	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2768	sigdelset (&sigfd_set, w->signum);
		2769	signalfd (sigfd, &sigfd_set, 0);
		2770	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2771	/*TODO: maybe unblock signal? */
		2772	}
		2773	else
		2774	#endif
2033	signal (w->signum, SIG_DFL);	2775	signal (w->signum, SIG_DFL);
		2776	}
		2777
		2778	EV_FREQUENT_CHECK;
2034	}	2779	}
2035		2780
2036	void	2781	void
2037	ev_child_start (EV_P_ ev_child *w)	2782	ev_child_start (EV_P_ ev_child *w)
2038	{	2783	{
2039	#if EV_MULTIPLICITY	2784	#if EV_MULTIPLICITY
2040	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2785	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2041	#endif	2786	#endif
2042	if (expect_false (ev_is_active (w)))	2787	if (expect_false (ev_is_active (w)))
2043	return;	2788	return;
2044		2789
		2790	EV_FREQUENT_CHECK;
		2791
2045	ev_start (EV_A_ (W)w, 1);	2792	ev_start (EV_A_ (W)w, 1);
2046	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2793	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2794
		2795	EV_FREQUENT_CHECK;
2047	}	2796	}
2048		2797
2049	void	2798	void
2050	ev_child_stop (EV_P_ ev_child *w)	2799	ev_child_stop (EV_P_ ev_child *w)
2051	{	2800	{
2052	clear_pending (EV_A_ (W)w);	2801	clear_pending (EV_A_ (W)w);
2053	if (expect_false (!ev_is_active (w)))	2802	if (expect_false (!ev_is_active (w)))
2054	return;	2803	return;
2055		2804
		2805	EV_FREQUENT_CHECK;
		2806
2056	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2807	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2057	ev_stop (EV_A_ (W)w);	2808	ev_stop (EV_A_ (W)w);
		2809
		2810	EV_FREQUENT_CHECK;
2058	}	2811	}
2059		2812
2060	#if EV_STAT_ENABLE	2813	#if EV_STAT_ENABLE
2061		2814
2062	# ifdef _WIN32	2815	# ifdef _WIN32
2063	# undef lstat	2816	# undef lstat
2064	# define lstat(a,b) _stati64 (a,b)	2817	# define lstat(a,b) _stati64 (a,b)
2065	# endif	2818	# endif
2066		2819
2067	#define DEF_STAT_INTERVAL 5.0074891	2820	#define DEF_STAT_INTERVAL 5.0074891
		2821	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2068	#define MIN_STAT_INTERVAL 0.1074891	2822	#define MIN_STAT_INTERVAL 0.1074891
2069		2823
2070	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2824	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2071		2825
2072	#if EV_USE_INOTIFY	2826	#if EV_USE_INOTIFY
2073	# define EV_INOTIFY_BUFSIZE 8192	2827	# define EV_INOTIFY_BUFSIZE 8192
…		…
2077	{	2831	{
2078	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);	2832	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2079		2833
2080	if (w->wd < 0)	2834	if (w->wd < 0)
2081	{	2835	{
		2836	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2082	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2837	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2083		2838
2084	/* monitor some parent directory for speedup hints */	2839	/* monitor some parent directory for speedup hints */
		2840	/* note that exceeding the hardcoded path limit is not a correctness issue, */
		2841	/* but an efficiency issue only */
2085	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2842	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2086	{	2843	{
2087	char path [4096];	2844	char path [4096];
2088	strcpy (path, w->path);	2845	strcpy (path, w->path);
2089		2846
…		…
2092	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2849	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2093	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2850	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2094		2851
2095	char *pend = strrchr (path, '/');	2852	char *pend = strrchr (path, '/');
2096		2853
2097	if (!pend)	2854	if (!pend || pend == path)
2098	break; /* whoops, no '/', complain to your admin */	2855	break;
2099		2856
2100	*pend = 0;	2857	*pend = 0;
2101	w->wd = inotify_add_watch (fs_fd, path, mask);	2858	w->wd = inotify_add_watch (fs_fd, path, mask);
2102	}	2859	}
2103	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2860	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2104	}	2861	}
2105	}	2862	}
2106	else
2107	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2108		2863
2109	if (w->wd >= 0)	2864	if (w->wd >= 0)
		2865	{
2110	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2866	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2867
		2868	/* now local changes will be tracked by inotify, but remote changes won't */
		2869	/* unless the filesystem it known to be local, we therefore still poll */
		2870	/* also do poll on <2.6.25, but with normal frequency */
		2871	struct statfs sfs;
		2872
		2873	if (fs_2625 && !statfs (w->path, &sfs))
		2874	if (sfs.f_type == 0x1373 /* devfs */
		2875	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2876	|| sfs.f_type == 0x3153464a /* jfs */
		2877	|| sfs.f_type == 0x52654973 /* reiser3 */
		2878	|| sfs.f_type == 0x01021994 /* tempfs */
		2879	|| sfs.f_type == 0x58465342 /* xfs */)
		2880	return;
		2881
		2882	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2883	ev_timer_again (EV_A_ &w->timer);
		2884	}
2111	}	2885	}
2112		2886
2113	static void noinline	2887	static void noinline
2114	infy_del (EV_P_ ev_stat *w)	2888	infy_del (EV_P_ ev_stat *w)
2115	{	2889	{
…		…
2129		2903
2130	static void noinline	2904	static void noinline
2131	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2905	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2132	{	2906	{
2133	if (slot < 0)	2907	if (slot < 0)
2134	/* overflow, need to check for all hahs slots */	2908	/* overflow, need to check for all hash slots */
2135	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2909	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2136	infy_wd (EV_A_ slot, wd, ev);	2910	infy_wd (EV_A_ slot, wd, ev);
2137	else	2911	else
2138	{	2912	{
2139	WL w_;	2913	WL w_;
…		…
2145		2919
2146	if (w->wd == wd || wd == -1)	2920	if (w->wd == wd || wd == -1)
2147	{	2921	{
2148	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2922	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2149	{	2923	{
		2924	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2150	w->wd = -1;	2925	w->wd = -1;
2151	infy_add (EV_A_ w); /* re-add, no matter what */	2926	infy_add (EV_A_ w); /* re-add, no matter what */
2152	}	2927	}
2153		2928
2154	stat_timer_cb (EV_A_ &w->timer, 0);	2929	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2167		2942
2168	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2943	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2169	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2944	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2170	}	2945	}
2171		2946
2172	void inline_size	2947	inline_size void
		2948	check_2625 (EV_P)
		2949	{
		2950	/* kernels < 2.6.25 are borked
		2951	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2952	*/
		2953	struct utsname buf;
		2954	int major, minor, micro;
		2955
		2956	if (uname (&buf))
		2957	return;
		2958
		2959	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2960	return;
		2961
		2962	if (major < 2
		2963	|| (major == 2 && minor < 6)
		2964	|| (major == 2 && minor == 6 && micro < 25))
		2965	return;
		2966
		2967	fs_2625 = 1;
		2968	}
		2969
		2970	inline_size void
2173	infy_init (EV_P)	2971	infy_init (EV_P)
2174	{	2972	{
2175	if (fs_fd != -2)	2973	if (fs_fd != -2)
2176	return;	2974	return;
		2975
		2976	fs_fd = -1;
		2977
		2978	check_2625 (EV_A);
2177		2979
2178	fs_fd = inotify_init ();	2980	fs_fd = inotify_init ();
2179		2981
2180	if (fs_fd >= 0)	2982	if (fs_fd >= 0)
2181	{	2983	{
…		…
2183	ev_set_priority (&fs_w, EV_MAXPRI);	2985	ev_set_priority (&fs_w, EV_MAXPRI);
2184	ev_io_start (EV_A_ &fs_w);	2986	ev_io_start (EV_A_ &fs_w);
2185	}	2987	}
2186	}	2988	}
2187		2989
2188	void inline_size	2990	inline_size void
2189	infy_fork (EV_P)	2991	infy_fork (EV_P)
2190	{	2992	{
2191	int slot;	2993	int slot;
2192		2994
2193	if (fs_fd < 0)	2995	if (fs_fd < 0)
…		…
2209	w->wd = -1;	3011	w->wd = -1;
2210		3012
2211	if (fs_fd >= 0)	3013	if (fs_fd >= 0)
2212	infy_add (EV_A_ w); /* re-add, no matter what */	3014	infy_add (EV_A_ w); /* re-add, no matter what */
2213	else	3015	else
2214	ev_timer_start (EV_A_ &w->timer);	3016	ev_timer_again (EV_A_ &w->timer);
2215	}	3017	}
2216
2217	}	3018	}
2218	}	3019	}
2219		3020
		3021	#endif
		3022
		3023	#ifdef _WIN32
		3024	# define EV_LSTAT(p,b) _stati64 (p, b)
		3025	#else
		3026	# define EV_LSTAT(p,b) lstat (p, b)
2220	#endif	3027	#endif
2221		3028
2222	void	3029	void
2223	ev_stat_stat (EV_P_ ev_stat *w)	3030	ev_stat_stat (EV_P_ ev_stat *w)
2224	{	3031	{
…		…
2251	|| w->prev.st_atime != w->attr.st_atime	3058	|| w->prev.st_atime != w->attr.st_atime
2252	|| w->prev.st_mtime != w->attr.st_mtime	3059	|| w->prev.st_mtime != w->attr.st_mtime
2253	|| w->prev.st_ctime != w->attr.st_ctime	3060	|| w->prev.st_ctime != w->attr.st_ctime
2254	) {	3061	) {
2255	#if EV_USE_INOTIFY	3062	#if EV_USE_INOTIFY
		3063	if (fs_fd >= 0)
		3064	{
2256	infy_del (EV_A_ w);	3065	infy_del (EV_A_ w);
2257	infy_add (EV_A_ w);	3066	infy_add (EV_A_ w);
2258	ev_stat_stat (EV_A_ w); /* avoid race... */	3067	ev_stat_stat (EV_A_ w); /* avoid race... */
		3068	}
2259	#endif	3069	#endif
2260		3070
2261	ev_feed_event (EV_A_ w, EV_STAT);	3071	ev_feed_event (EV_A_ w, EV_STAT);
2262	}	3072	}
2263	}	3073	}
…		…
2266	ev_stat_start (EV_P_ ev_stat *w)	3076	ev_stat_start (EV_P_ ev_stat *w)
2267	{	3077	{
2268	if (expect_false (ev_is_active (w)))	3078	if (expect_false (ev_is_active (w)))
2269	return;	3079	return;
2270		3080
2271	/* since we use memcmp, we need to clear any padding data etc. */
2272	memset (&w->prev, 0, sizeof (ev_statdata));
2273	memset (&w->attr, 0, sizeof (ev_statdata));
2274
2275	ev_stat_stat (EV_A_ w);	3081	ev_stat_stat (EV_A_ w);
2276		3082
		3083	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2277	if (w->interval < MIN_STAT_INTERVAL)	3084	w->interval = MIN_STAT_INTERVAL;
2278	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2279		3085
2280	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3086	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2281	ev_set_priority (&w->timer, ev_priority (w));	3087	ev_set_priority (&w->timer, ev_priority (w));
2282		3088
2283	#if EV_USE_INOTIFY	3089	#if EV_USE_INOTIFY
2284	infy_init (EV_A);	3090	infy_init (EV_A);
2285		3091
2286	if (fs_fd >= 0)	3092	if (fs_fd >= 0)
2287	infy_add (EV_A_ w);	3093	infy_add (EV_A_ w);
2288	else	3094	else
2289	#endif	3095	#endif
2290	ev_timer_start (EV_A_ &w->timer);	3096	ev_timer_again (EV_A_ &w->timer);
2291		3097
2292	ev_start (EV_A_ (W)w, 1);	3098	ev_start (EV_A_ (W)w, 1);
		3099
		3100	EV_FREQUENT_CHECK;
2293	}	3101	}
2294		3102
2295	void	3103	void
2296	ev_stat_stop (EV_P_ ev_stat *w)	3104	ev_stat_stop (EV_P_ ev_stat *w)
2297	{	3105	{
2298	clear_pending (EV_A_ (W)w);	3106	clear_pending (EV_A_ (W)w);
2299	if (expect_false (!ev_is_active (w)))	3107	if (expect_false (!ev_is_active (w)))
2300	return;	3108	return;
2301		3109
		3110	EV_FREQUENT_CHECK;
		3111
2302	#if EV_USE_INOTIFY	3112	#if EV_USE_INOTIFY
2303	infy_del (EV_A_ w);	3113	infy_del (EV_A_ w);
2304	#endif	3114	#endif
2305	ev_timer_stop (EV_A_ &w->timer);	3115	ev_timer_stop (EV_A_ &w->timer);
2306		3116
2307	ev_stop (EV_A_ (W)w);	3117	ev_stop (EV_A_ (W)w);
		3118
		3119	EV_FREQUENT_CHECK;
2308	}	3120	}
2309	#endif	3121	#endif
2310		3122
2311	#if EV_IDLE_ENABLE	3123	#if EV_IDLE_ENABLE
2312	void	3124	void
…		…
2314	{	3126	{
2315	if (expect_false (ev_is_active (w)))	3127	if (expect_false (ev_is_active (w)))
2316	return;	3128	return;
2317		3129
2318	pri_adjust (EV_A_ (W)w);	3130	pri_adjust (EV_A_ (W)w);
		3131
		3132	EV_FREQUENT_CHECK;
2319		3133
2320	{	3134	{
2321	int active = ++idlecnt [ABSPRI (w)];	3135	int active = ++idlecnt [ABSPRI (w)];
2322		3136
2323	++idleall;	3137	++idleall;
2324	ev_start (EV_A_ (W)w, active);	3138	ev_start (EV_A_ (W)w, active);
2325		3139
2326	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	3140	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2327	idles [ABSPRI (w)][active - 1] = w;	3141	idles [ABSPRI (w)][active - 1] = w;
2328	}	3142	}
		3143
		3144	EV_FREQUENT_CHECK;
2329	}	3145	}
2330		3146
2331	void	3147	void
2332	ev_idle_stop (EV_P_ ev_idle *w)	3148	ev_idle_stop (EV_P_ ev_idle *w)
2333	{	3149	{
2334	clear_pending (EV_A_ (W)w);	3150	clear_pending (EV_A_ (W)w);
2335	if (expect_false (!ev_is_active (w)))	3151	if (expect_false (!ev_is_active (w)))
2336	return;	3152	return;
2337		3153
		3154	EV_FREQUENT_CHECK;
		3155
2338	{	3156	{
2339	int active = ((W)w)->active;	3157	int active = ev_active (w);
2340		3158
2341	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3159	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2342	((W)idles [ABSPRI (w)][active - 1])->active = active;	3160	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2343		3161
2344	ev_stop (EV_A_ (W)w);	3162	ev_stop (EV_A_ (W)w);
2345	--idleall;	3163	--idleall;
2346	}	3164	}
		3165
		3166	EV_FREQUENT_CHECK;
2347	}	3167	}
2348	#endif	3168	#endif
2349		3169
2350	void	3170	void
2351	ev_prepare_start (EV_P_ ev_prepare *w)	3171	ev_prepare_start (EV_P_ ev_prepare *w)
2352	{	3172	{
2353	if (expect_false (ev_is_active (w)))	3173	if (expect_false (ev_is_active (w)))
2354	return;	3174	return;
		3175
		3176	EV_FREQUENT_CHECK;
2355		3177
2356	ev_start (EV_A_ (W)w, ++preparecnt);	3178	ev_start (EV_A_ (W)w, ++preparecnt);
2357	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3179	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2358	prepares [preparecnt - 1] = w;	3180	prepares [preparecnt - 1] = w;
		3181
		3182	EV_FREQUENT_CHECK;
2359	}	3183	}
2360		3184
2361	void	3185	void
2362	ev_prepare_stop (EV_P_ ev_prepare *w)	3186	ev_prepare_stop (EV_P_ ev_prepare *w)
2363	{	3187	{
2364	clear_pending (EV_A_ (W)w);	3188	clear_pending (EV_A_ (W)w);
2365	if (expect_false (!ev_is_active (w)))	3189	if (expect_false (!ev_is_active (w)))
2366	return;	3190	return;
2367		3191
		3192	EV_FREQUENT_CHECK;
		3193
2368	{	3194	{
2369	int active = ((W)w)->active;	3195	int active = ev_active (w);
		3196
2370	prepares [active - 1] = prepares [--preparecnt];	3197	prepares [active - 1] = prepares [--preparecnt];
2371	((W)prepares [active - 1])->active = active;	3198	ev_active (prepares [active - 1]) = active;
2372	}	3199	}
2373		3200
2374	ev_stop (EV_A_ (W)w);	3201	ev_stop (EV_A_ (W)w);
		3202
		3203	EV_FREQUENT_CHECK;
2375	}	3204	}
2376		3205
2377	void	3206	void
2378	ev_check_start (EV_P_ ev_check *w)	3207	ev_check_start (EV_P_ ev_check *w)
2379	{	3208	{
2380	if (expect_false (ev_is_active (w)))	3209	if (expect_false (ev_is_active (w)))
2381	return;	3210	return;
		3211
		3212	EV_FREQUENT_CHECK;
2382		3213
2383	ev_start (EV_A_ (W)w, ++checkcnt);	3214	ev_start (EV_A_ (W)w, ++checkcnt);
2384	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3215	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2385	checks [checkcnt - 1] = w;	3216	checks [checkcnt - 1] = w;
		3217
		3218	EV_FREQUENT_CHECK;
2386	}	3219	}
2387		3220
2388	void	3221	void
2389	ev_check_stop (EV_P_ ev_check *w)	3222	ev_check_stop (EV_P_ ev_check *w)
2390	{	3223	{
2391	clear_pending (EV_A_ (W)w);	3224	clear_pending (EV_A_ (W)w);
2392	if (expect_false (!ev_is_active (w)))	3225	if (expect_false (!ev_is_active (w)))
2393	return;	3226	return;
2394		3227
		3228	EV_FREQUENT_CHECK;
		3229
2395	{	3230	{
2396	int active = ((W)w)->active;	3231	int active = ev_active (w);
		3232
2397	checks [active - 1] = checks [--checkcnt];	3233	checks [active - 1] = checks [--checkcnt];
2398	((W)checks [active - 1])->active = active;	3234	ev_active (checks [active - 1]) = active;
2399	}	3235	}
2400		3236
2401	ev_stop (EV_A_ (W)w);	3237	ev_stop (EV_A_ (W)w);
		3238
		3239	EV_FREQUENT_CHECK;
2402	}	3240	}
2403		3241
2404	#if EV_EMBED_ENABLE	3242	#if EV_EMBED_ENABLE
2405	void noinline	3243	void noinline
2406	ev_embed_sweep (EV_P_ ev_embed *w)	3244	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2423	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3261	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2424	{	3262	{
2425	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3263	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2426		3264
2427	{	3265	{
2428	struct ev_loop *loop = w->other;	3266	EV_P = w->other;
2429		3267
2430	while (fdchangecnt)	3268	while (fdchangecnt)
2431	{	3269	{
2432	fd_reify (EV_A);	3270	fd_reify (EV_A);
2433	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3271	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2434	}	3272	}
2435	}	3273	}
2436	}	3274	}
2437		3275
		3276	static void
		3277	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3278	{
		3279	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3280
		3281	ev_embed_stop (EV_A_ w);
		3282
		3283	{
		3284	EV_P = w->other;
		3285
		3286	ev_loop_fork (EV_A);
		3287	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3288	}
		3289
		3290	ev_embed_start (EV_A_ w);
		3291	}
		3292
2438	#if 0	3293	#if 0
2439	static void	3294	static void
2440	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3295	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2441	{	3296	{
2442	ev_idle_stop (EV_A_ idle);	3297	ev_idle_stop (EV_A_ idle);
…		…
2448	{	3303	{
2449	if (expect_false (ev_is_active (w)))	3304	if (expect_false (ev_is_active (w)))
2450	return;	3305	return;
2451		3306
2452	{	3307	{
2453	struct ev_loop *loop = w->other;	3308	EV_P = w->other;
2454	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3309	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2455	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3310	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2456	}	3311	}
		3312
		3313	EV_FREQUENT_CHECK;
2457		3314
2458	ev_set_priority (&w->io, ev_priority (w));	3315	ev_set_priority (&w->io, ev_priority (w));
2459	ev_io_start (EV_A_ &w->io);	3316	ev_io_start (EV_A_ &w->io);
2460		3317
2461	ev_prepare_init (&w->prepare, embed_prepare_cb);	3318	ev_prepare_init (&w->prepare, embed_prepare_cb);
2462	ev_set_priority (&w->prepare, EV_MINPRI);	3319	ev_set_priority (&w->prepare, EV_MINPRI);
2463	ev_prepare_start (EV_A_ &w->prepare);	3320	ev_prepare_start (EV_A_ &w->prepare);
2464		3321
		3322	ev_fork_init (&w->fork, embed_fork_cb);
		3323	ev_fork_start (EV_A_ &w->fork);
		3324
2465	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3325	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2466		3326
2467	ev_start (EV_A_ (W)w, 1);	3327	ev_start (EV_A_ (W)w, 1);
		3328
		3329	EV_FREQUENT_CHECK;
2468	}	3330	}
2469		3331
2470	void	3332	void
2471	ev_embed_stop (EV_P_ ev_embed *w)	3333	ev_embed_stop (EV_P_ ev_embed *w)
2472	{	3334	{
2473	clear_pending (EV_A_ (W)w);	3335	clear_pending (EV_A_ (W)w);
2474	if (expect_false (!ev_is_active (w)))	3336	if (expect_false (!ev_is_active (w)))
2475	return;	3337	return;
2476		3338
		3339	EV_FREQUENT_CHECK;
		3340
2477	ev_io_stop (EV_A_ &w->io);	3341	ev_io_stop (EV_A_ &w->io);
2478	ev_prepare_stop (EV_A_ &w->prepare);	3342	ev_prepare_stop (EV_A_ &w->prepare);
		3343	ev_fork_stop (EV_A_ &w->fork);
2479		3344
2480	ev_stop (EV_A_ (W)w);	3345	EV_FREQUENT_CHECK;
2481	}	3346	}
2482	#endif	3347	#endif
2483		3348
2484	#if EV_FORK_ENABLE	3349	#if EV_FORK_ENABLE
2485	void	3350	void
2486	ev_fork_start (EV_P_ ev_fork *w)	3351	ev_fork_start (EV_P_ ev_fork *w)
2487	{	3352	{
2488	if (expect_false (ev_is_active (w)))	3353	if (expect_false (ev_is_active (w)))
2489	return;	3354	return;
		3355
		3356	EV_FREQUENT_CHECK;
2490		3357
2491	ev_start (EV_A_ (W)w, ++forkcnt);	3358	ev_start (EV_A_ (W)w, ++forkcnt);
2492	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3359	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2493	forks [forkcnt - 1] = w;	3360	forks [forkcnt - 1] = w;
		3361
		3362	EV_FREQUENT_CHECK;
2494	}	3363	}
2495		3364
2496	void	3365	void
2497	ev_fork_stop (EV_P_ ev_fork *w)	3366	ev_fork_stop (EV_P_ ev_fork *w)
2498	{	3367	{
2499	clear_pending (EV_A_ (W)w);	3368	clear_pending (EV_A_ (W)w);
2500	if (expect_false (!ev_is_active (w)))	3369	if (expect_false (!ev_is_active (w)))
2501	return;	3370	return;
2502		3371
		3372	EV_FREQUENT_CHECK;
		3373
2503	{	3374	{
2504	int active = ((W)w)->active;	3375	int active = ev_active (w);
		3376
2505	forks [active - 1] = forks [--forkcnt];	3377	forks [active - 1] = forks [--forkcnt];
2506	((W)forks [active - 1])->active = active;	3378	ev_active (forks [active - 1]) = active;
2507	}	3379	}
2508		3380
2509	ev_stop (EV_A_ (W)w);	3381	ev_stop (EV_A_ (W)w);
		3382
		3383	EV_FREQUENT_CHECK;
2510	}	3384	}
2511	#endif	3385	#endif
2512		3386
2513	#if EV_ASYNC_ENABLE	3387	#if EV_ASYNC_ENABLE
2514	void	3388	void
…		…
2516	{	3390	{
2517	if (expect_false (ev_is_active (w)))	3391	if (expect_false (ev_is_active (w)))
2518	return;	3392	return;
2519		3393
2520	evpipe_init (EV_A);	3394	evpipe_init (EV_A);
		3395
		3396	EV_FREQUENT_CHECK;
2521		3397
2522	ev_start (EV_A_ (W)w, ++asynccnt);	3398	ev_start (EV_A_ (W)w, ++asynccnt);
2523	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3399	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2524	asyncs [asynccnt - 1] = w;	3400	asyncs [asynccnt - 1] = w;
		3401
		3402	EV_FREQUENT_CHECK;
2525	}	3403	}
2526		3404
2527	void	3405	void
2528	ev_async_stop (EV_P_ ev_async *w)	3406	ev_async_stop (EV_P_ ev_async *w)
2529	{	3407	{
2530	clear_pending (EV_A_ (W)w);	3408	clear_pending (EV_A_ (W)w);
2531	if (expect_false (!ev_is_active (w)))	3409	if (expect_false (!ev_is_active (w)))
2532	return;	3410	return;
2533		3411
		3412	EV_FREQUENT_CHECK;
		3413
2534	{	3414	{
2535	int active = ((W)w)->active;	3415	int active = ev_active (w);
		3416
2536	asyncs [active - 1] = asyncs [--asynccnt];	3417	asyncs [active - 1] = asyncs [--asynccnt];
2537	((W)asyncs [active - 1])->active = active;	3418	ev_active (asyncs [active - 1]) = active;
2538	}	3419	}
2539		3420
2540	ev_stop (EV_A_ (W)w);	3421	ev_stop (EV_A_ (W)w);
		3422
		3423	EV_FREQUENT_CHECK;
2541	}	3424	}
2542		3425
2543	void	3426	void
2544	ev_async_send (EV_P_ ev_async *w)	3427	ev_async_send (EV_P_ ev_async *w)
2545	{	3428	{
2546	w->sent = 1;	3429	w->sent = 1;
2547	evpipe_write (EV_A_ &gotasync);	3430	evpipe_write (EV_A_ &async_pending);
2548	}	3431	}
2549	#endif	3432	#endif
2550		3433
2551	/*****************************************************************************/	3434	/*****************************************************************************/
2552		3435
…		…
2562	once_cb (EV_P_ struct ev_once *once, int revents)	3445	once_cb (EV_P_ struct ev_once *once, int revents)
2563	{	3446	{
2564	void (*cb)(int revents, void *arg) = once->cb;	3447	void (*cb)(int revents, void *arg) = once->cb;
2565	void *arg = once->arg;	3448	void *arg = once->arg;
2566		3449
2567	ev_io_stop (EV_A_ &once->io);	3450	ev_io_stop (EV_A_ &once->io);
2568	ev_timer_stop (EV_A_ &once->to);	3451	ev_timer_stop (EV_A_ &once->to);
2569	ev_free (once);	3452	ev_free (once);
2570		3453
2571	cb (revents, arg);	3454	cb (revents, arg);
2572	}	3455	}
2573		3456
2574	static void	3457	static void
2575	once_cb_io (EV_P_ ev_io *w, int revents)	3458	once_cb_io (EV_P_ ev_io *w, int revents)
2576	{	3459	{
2577	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3460	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3461
		3462	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2578	}	3463	}
2579		3464
2580	static void	3465	static void
2581	once_cb_to (EV_P_ ev_timer *w, int revents)	3466	once_cb_to (EV_P_ ev_timer *w, int revents)
2582	{	3467	{
2583	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3468	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3469
		3470	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2584	}	3471	}
2585		3472
2586	void	3473	void
2587	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3474	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2588	{	3475	{
…		…
2610	ev_timer_set (&once->to, timeout, 0.);	3497	ev_timer_set (&once->to, timeout, 0.);
2611	ev_timer_start (EV_A_ &once->to);	3498	ev_timer_start (EV_A_ &once->to);
2612	}	3499	}
2613	}	3500	}
2614		3501
		3502	/*****************************************************************************/
		3503
		3504	#if EV_WALK_ENABLE
		3505	void
		3506	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3507	{
		3508	int i, j;
		3509	ev_watcher_list *wl, *wn;
		3510
		3511	if (types & (EV_IO | EV_EMBED))
		3512	for (i = 0; i < anfdmax; ++i)
		3513	for (wl = anfds [i].head; wl; )
		3514	{
		3515	wn = wl->next;
		3516
		3517	#if EV_EMBED_ENABLE
		3518	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3519	{
		3520	if (types & EV_EMBED)
		3521	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3522	}
		3523	else
		3524	#endif
		3525	#if EV_USE_INOTIFY
		3526	if (ev_cb ((ev_io *)wl) == infy_cb)
		3527	;
		3528	else
		3529	#endif
		3530	if ((ev_io *)wl != &pipe_w)
		3531	if (types & EV_IO)
		3532	cb (EV_A_ EV_IO, wl);
		3533
		3534	wl = wn;
		3535	}
		3536
		3537	if (types & (EV_TIMER | EV_STAT))
		3538	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3539	#if EV_STAT_ENABLE
		3540	/*TODO: timer is not always active*/
		3541	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3542	{
		3543	if (types & EV_STAT)
		3544	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3545	}
		3546	else
		3547	#endif
		3548	if (types & EV_TIMER)
		3549	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3550
		3551	#if EV_PERIODIC_ENABLE
		3552	if (types & EV_PERIODIC)
		3553	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3554	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3555	#endif
		3556
		3557	#if EV_IDLE_ENABLE
		3558	if (types & EV_IDLE)
		3559	for (j = NUMPRI; i--; )
		3560	for (i = idlecnt [j]; i--; )
		3561	cb (EV_A_ EV_IDLE, idles [j][i]);
		3562	#endif
		3563
		3564	#if EV_FORK_ENABLE
		3565	if (types & EV_FORK)
		3566	for (i = forkcnt; i--; )
		3567	if (ev_cb (forks [i]) != embed_fork_cb)
		3568	cb (EV_A_ EV_FORK, forks [i]);
		3569	#endif
		3570
		3571	#if EV_ASYNC_ENABLE
		3572	if (types & EV_ASYNC)
		3573	for (i = asynccnt; i--; )
		3574	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3575	#endif
		3576
		3577	if (types & EV_PREPARE)
		3578	for (i = preparecnt; i--; )
		3579	#if EV_EMBED_ENABLE
		3580	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3581	#endif
		3582	cb (EV_A_ EV_PREPARE, prepares [i]);
		3583
		3584	if (types & EV_CHECK)
		3585	for (i = checkcnt; i--; )
		3586	cb (EV_A_ EV_CHECK, checks [i]);
		3587
		3588	if (types & EV_SIGNAL)
		3589	for (i = 0; i < EV_NSIG - 1; ++i)
		3590	for (wl = signals [i].head; wl; )
		3591	{
		3592	wn = wl->next;
		3593	cb (EV_A_ EV_SIGNAL, wl);
		3594	wl = wn;
		3595	}
		3596
		3597	if (types & EV_CHILD)
		3598	for (i = EV_PID_HASHSIZE; i--; )
		3599	for (wl = childs [i]; wl; )
		3600	{
		3601	wn = wl->next;
		3602	cb (EV_A_ EV_CHILD, wl);
		3603	wl = wn;
		3604	}
		3605	/* EV_STAT 0x00001000 /* stat data changed */
		3606	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3607	}
		3608	#endif
		3609
2615	#if EV_MULTIPLICITY	3610	#if EV_MULTIPLICITY
2616	#include "ev_wrap.h"	3611	#include "ev_wrap.h"
2617	#endif	3612	#endif
2618		3613
2619	#ifdef __cplusplus	3614	#ifdef __cplusplus

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