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Comparing libev/ev.c (file contents):
Revision 1.228 by root, Fri May 2 08:07:37 2008 UTC vs.
Revision 1.315 by root, Wed Aug 26 17:46:22 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__ >= 7))
		308	# define EV_USE_SIGNALFD 1
		309	# else
		310	# define EV_USE_SIGNALFD 0
		311	# endif
		312	#endif
		313
		314	#if 0 /* debugging */
		315	# define EV_VERIFY 3
		316	# define EV_USE_4HEAP 1
		317	# define EV_HEAP_CACHE_AT 1
		318	#endif
		319
		320	#ifndef EV_VERIFY
		321	# define EV_VERIFY !EV_MINIMAL
		322	#endif
		323
		324	#ifndef EV_USE_4HEAP
		325	# define EV_USE_4HEAP !EV_MINIMAL
		326	#endif
		327
		328	#ifndef EV_HEAP_CACHE_AT
		329	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		330	#endif
		331
		332	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		333	/* which makes programs even slower. might work on other unices, too. */
		334	#if EV_USE_CLOCK_SYSCALL
		335	# include <syscall.h>
		336	# ifdef SYS_clock_gettime
		337	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		338	# undef EV_USE_MONOTONIC
		339	# define EV_USE_MONOTONIC 1
		340	# else
		341	# undef EV_USE_CLOCK_SYSCALL
		342	# define EV_USE_CLOCK_SYSCALL 0
		343	# endif
		344	#endif
		345
240	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	346	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
241		347
242	#ifndef CLOCK_MONOTONIC	348	#ifndef CLOCK_MONOTONIC
243	# undef EV_USE_MONOTONIC	349	# undef EV_USE_MONOTONIC
244	# define EV_USE_MONOTONIC 0	350	# define EV_USE_MONOTONIC 0
…		…
259	# include <sys/select.h>	365	# include <sys/select.h>
260	# endif	366	# endif
261	#endif	367	#endif
262		368
263	#if EV_USE_INOTIFY	369	#if EV_USE_INOTIFY
		370	# include <sys/utsname.h>
		371	# include <sys/statfs.h>
264	# include <sys/inotify.h>	372	# include <sys/inotify.h>
		373	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		374	# ifndef IN_DONT_FOLLOW
		375	# undef EV_USE_INOTIFY
		376	# define EV_USE_INOTIFY 0
		377	# endif
265	#endif	378	#endif
266		379
267	#if EV_SELECT_IS_WINSOCKET	380	#if EV_SELECT_IS_WINSOCKET
268	# include <winsock.h>	381	# include <winsock.h>
269	#endif	382	#endif
270		383
271	#if EV_USE_EVENTFD	384	#if EV_USE_EVENTFD
272	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	385	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273	# include <stdint.h>	386	# include <stdint.h>
		387	# ifndef EFD_NONBLOCK
		388	# define EFD_NONBLOCK O_NONBLOCK
		389	# endif
		390	# ifndef EFD_CLOEXEC
		391	# ifdef O_CLOEXEC
		392	# define EFD_CLOEXEC O_CLOEXEC
		393	# else
		394	# define EFD_CLOEXEC 02000000
		395	# endif
		396	# endif
274	# ifdef __cplusplus	397	# ifdef __cplusplus
275	extern "C" {	398	extern "C" {
276	# endif	399	# endif
277	int eventfd (unsigned int initval, int flags);	400	int eventfd (unsigned int initval, int flags);
278	# ifdef __cplusplus	401	# ifdef __cplusplus
279	}	402	}
280	# endif	403	# endif
281	#endif	404	#endif
282		405
		406	#if EV_USE_SIGNALFD
		407	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		408	# include <stdint.h>
		409	# ifndef SFD_NONBLOCK
		410	# define SFD_NONBLOCK O_NONBLOCK
		411	# endif
		412	# ifndef SFD_CLOEXEC
		413	# ifdef O_CLOEXEC
		414	# define SFD_CLOEXEC O_CLOEXEC
		415	# else
		416	# define SFD_CLOEXEC 02000000
		417	# endif
		418	# endif
		419	# ifdef __cplusplus
		420	extern "C" {
		421	# endif
		422	int signalfd (int fd, const sigset_t *mask, int flags);
		423
		424	struct signalfd_siginfo
		425	{
		426	uint32_t ssi_signo;
		427	char pad[128 - sizeof (uint32_t)];
		428	};
		429	# ifdef __cplusplus
		430	}
		431	# endif
		432	#endif
		433
		434
283	/**/	435	/**/
		436
		437	#if EV_VERIFY >= 3
		438	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		439	#else
		440	# define EV_FREQUENT_CHECK do { } while (0)
		441	#endif
284		442
285	/*	443	/*
286	* This is used to avoid floating point rounding problems.	444	* This is used to avoid floating point rounding problems.
287	* It is added to ev_rt_now when scheduling periodics	445	* It is added to ev_rt_now when scheduling periodics
288	* to ensure progress, time-wise, even when rounding	446	* to ensure progress, time-wise, even when rounding
…		…
315	# define inline_speed static noinline	473	# define inline_speed static noinline
316	#else	474	#else
317	# define inline_speed static inline	475	# define inline_speed static inline
318	#endif	476	#endif
319		477
320	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	478	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		479
		480	#if EV_MINPRI == EV_MAXPRI
		481	# define ABSPRI(w) (((W)w), 0)
		482	#else
321	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	483	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		484	#endif
322		485
323	#define EMPTY /* required for microsofts broken pseudo-c compiler */	486	#define EMPTY /* required for microsofts broken pseudo-c compiler */
324	#define EMPTY2(a,b) /* used to suppress some warnings */	487	#define EMPTY2(a,b) /* used to suppress some warnings */
325		488
326	typedef ev_watcher *W;	489	typedef ev_watcher *W;
327	typedef ev_watcher_list *WL;	490	typedef ev_watcher_list *WL;
328	typedef ev_watcher_time *WT;	491	typedef ev_watcher_time *WT;
329		492
		493	#define ev_active(w) ((W)(w))->active
330	#define ev_at(w) ((WT)(w))->at	494	#define ev_at(w) ((WT)(w))->at
331		495
332	#if EV_USE_MONOTONIC	496	#if EV_USE_REALTIME
333	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	497	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
334	/* giving it a reasonably high chance of working on typical architetcures */	498	/* giving it a reasonably high chance of working on typical architetcures */
		499	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		500	#endif
		501
		502	#if EV_USE_MONOTONIC
335	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	503	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		504	#endif
		505
		506	#ifndef EV_FD_TO_WIN32_HANDLE
		507	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		508	#endif
		509	#ifndef EV_WIN32_HANDLE_TO_FD
		510	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0)
		511	#endif
		512	#ifndef EV_WIN32_CLOSE_FD
		513	# define EV_WIN32_CLOSE_FD(fd) close (fd)
336	#endif	514	#endif
337		515
338	#ifdef _WIN32	516	#ifdef _WIN32
339	# include "ev_win32.c"	517	# include "ev_win32.c"
340	#endif	518	#endif
…		…
348	{	526	{
349	syserr_cb = cb;	527	syserr_cb = cb;
350	}	528	}
351		529
352	static void noinline	530	static void noinline
353	syserr (const char *msg)	531	ev_syserr (const char *msg)
354	{	532	{
355	if (!msg)	533	if (!msg)
356	msg = "(libev) system error";	534	msg = "(libev) system error";
357		535
358	if (syserr_cb)	536	if (syserr_cb)
…		…
404	#define ev_malloc(size) ev_realloc (0, (size))	582	#define ev_malloc(size) ev_realloc (0, (size))
405	#define ev_free(ptr) ev_realloc ((ptr), 0)	583	#define ev_free(ptr) ev_realloc ((ptr), 0)
406		584
407	/*****************************************************************************/	585	/*****************************************************************************/
408		586
		587	/* set in reify when reification needed */
		588	#define EV_ANFD_REIFY 1
		589
		590	/* file descriptor info structure */
409	typedef struct	591	typedef struct
410	{	592	{
411	WL head;	593	WL head;
412	unsigned char events;	594	unsigned char events; /* the events watched for */
		595	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		596	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
413	unsigned char reify;	597	unsigned char unused;
		598	#if EV_USE_EPOLL
		599	unsigned int egen; /* generation counter to counter epoll bugs */
		600	#endif
414	#if EV_SELECT_IS_WINSOCKET	601	#if EV_SELECT_IS_WINSOCKET
415	SOCKET handle;	602	SOCKET handle;
416	#endif	603	#endif
417	} ANFD;	604	} ANFD;
418		605
		606	/* stores the pending event set for a given watcher */
419	typedef struct	607	typedef struct
420	{	608	{
421	W w;	609	W w;
422	int events;	610	int events; /* the pending event set for the given watcher */
423	} ANPENDING;	611	} ANPENDING;
424		612
425	#if EV_USE_INOTIFY	613	#if EV_USE_INOTIFY
		614	/* hash table entry per inotify-id */
426	typedef struct	615	typedef struct
427	{	616	{
428	WL head;	617	WL head;
429	} ANFS;	618	} ANFS;
		619	#endif
		620
		621	/* Heap Entry */
		622	#if EV_HEAP_CACHE_AT
		623	/* a heap element */
		624	typedef struct {
		625	ev_tstamp at;
		626	WT w;
		627	} ANHE;
		628
		629	#define ANHE_w(he) (he).w /* access watcher, read-write */
		630	#define ANHE_at(he) (he).at /* access cached at, read-only */
		631	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		632	#else
		633	/* a heap element */
		634	typedef WT ANHE;
		635
		636	#define ANHE_w(he) (he)
		637	#define ANHE_at(he) (he)->at
		638	#define ANHE_at_cache(he)
430	#endif	639	#endif
431		640
432	#if EV_MULTIPLICITY	641	#if EV_MULTIPLICITY
433		642
434	struct ev_loop	643	struct ev_loop
…		…
453		662
454	static int ev_default_loop_ptr;	663	static int ev_default_loop_ptr;
455		664
456	#endif	665	#endif
457		666
		667	#if EV_MINIMAL < 2
		668	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		669	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		670	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		671	#else
		672	# define EV_RELEASE_CB (void)0
		673	# define EV_ACQUIRE_CB (void)0
		674	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		675	#endif
		676
		677	#define EVUNLOOP_RECURSE 0x80
		678
458	/*****************************************************************************/	679	/*****************************************************************************/
459		680
		681	#ifndef EV_HAVE_EV_TIME
460	ev_tstamp	682	ev_tstamp
461	ev_time (void)	683	ev_time (void)
462	{	684	{
463	#if EV_USE_REALTIME	685	#if EV_USE_REALTIME
		686	if (expect_true (have_realtime))
		687	{
464	struct timespec ts;	688	struct timespec ts;
465	clock_gettime (CLOCK_REALTIME, &ts);	689	clock_gettime (CLOCK_REALTIME, &ts);
466	return ts.tv_sec + ts.tv_nsec * 1e-9;	690	return ts.tv_sec + ts.tv_nsec * 1e-9;
467	#else	691	}
		692	#endif
		693
468	struct timeval tv;	694	struct timeval tv;
469	gettimeofday (&tv, 0);	695	gettimeofday (&tv, 0);
470	return tv.tv_sec + tv.tv_usec * 1e-6;	696	return tv.tv_sec + tv.tv_usec * 1e-6;
471	#endif
472	}	697	}
		698	#endif
473		699
474	ev_tstamp inline_size	700	inline_size ev_tstamp
475	get_clock (void)	701	get_clock (void)
476	{	702	{
477	#if EV_USE_MONOTONIC	703	#if EV_USE_MONOTONIC
478	if (expect_true (have_monotonic))	704	if (expect_true (have_monotonic))
479	{	705	{
…		…
512	struct timeval tv;	738	struct timeval tv;
513		739
514	tv.tv_sec = (time_t)delay;	740	tv.tv_sec = (time_t)delay;
515	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	741	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
516		742
		743	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		744	/* something not guaranteed by newer posix versions, but guaranteed */
		745	/* by older ones */
517	select (0, 0, 0, 0, &tv);	746	select (0, 0, 0, 0, &tv);
518	#endif	747	#endif
519	}	748	}
520	}	749	}
521		750
522	/*****************************************************************************/	751	/*****************************************************************************/
523		752
524	int inline_size	753	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		754
		755	/* find a suitable new size for the given array, */
		756	/* hopefully by rounding to a ncie-to-malloc size */
		757	inline_size int
525	array_nextsize (int elem, int cur, int cnt)	758	array_nextsize (int elem, int cur, int cnt)
526	{	759	{
527	int ncur = cur + 1;	760	int ncur = cur + 1;
528		761
529	do	762	do
530	ncur <<= 1;	763	ncur <<= 1;
531	while (cnt > ncur);	764	while (cnt > ncur);
532		765
533	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	766	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
534	if (elem * ncur > 4096)	767	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
535	{	768	{
536	ncur *= elem;	769	ncur *= elem;
537	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	770	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
538	ncur = ncur - sizeof (void *) * 4;	771	ncur = ncur - sizeof (void *) * 4;
539	ncur /= elem;	772	ncur /= elem;
540	}	773	}
541		774
542	return ncur;	775	return ncur;
…		…
546	array_realloc (int elem, void *base, int *cur, int cnt)	779	array_realloc (int elem, void *base, int *cur, int cnt)
547	{	780	{
548	*cur = array_nextsize (elem, *cur, cnt);	781	*cur = array_nextsize (elem, *cur, cnt);
549	return ev_realloc (base, elem * *cur);	782	return ev_realloc (base, elem * *cur);
550	}	783	}
		784
		785	#define array_init_zero(base,count) \
		786	memset ((void *)(base), 0, sizeof (*(base)) * (count))
551		787
552	#define array_needsize(type,base,cur,cnt,init) \	788	#define array_needsize(type,base,cur,cnt,init) \
553	if (expect_false ((cnt) > (cur))) \	789	if (expect_false ((cnt) > (cur))) \
554	{ \	790	{ \
555	int ocur_ = (cur); \	791	int ocur_ = (cur); \
…		…
567	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	803	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
568	}	804	}
569	#endif	805	#endif
570		806
571	#define array_free(stem, idx) \	807	#define array_free(stem, idx) \
572	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	808	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
573		809
574	/*****************************************************************************/	810	/*****************************************************************************/
		811
		812	/* dummy callback for pending events */
		813	static void noinline
		814	pendingcb (EV_P_ ev_prepare *w, int revents)
		815	{
		816	}
575		817
576	void noinline	818	void noinline
577	ev_feed_event (EV_P_ void *w, int revents)	819	ev_feed_event (EV_P_ void *w, int revents)
578	{	820	{
579	W w_ = (W)w;	821	W w_ = (W)w;
…		…
588	pendings [pri][w_->pending - 1].w = w_;	830	pendings [pri][w_->pending - 1].w = w_;
589	pendings [pri][w_->pending - 1].events = revents;	831	pendings [pri][w_->pending - 1].events = revents;
590	}	832	}
591	}	833	}
592		834
593	void inline_speed	835	inline_speed void
		836	feed_reverse (EV_P_ W w)
		837	{
		838	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		839	rfeeds [rfeedcnt++] = w;
		840	}
		841
		842	inline_size void
		843	feed_reverse_done (EV_P_ int revents)
		844	{
		845	do
		846	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		847	while (rfeedcnt);
		848	}
		849
		850	inline_speed void
594	queue_events (EV_P_ W *events, int eventcnt, int type)	851	queue_events (EV_P_ W *events, int eventcnt, int type)
595	{	852	{
596	int i;	853	int i;
597		854
598	for (i = 0; i < eventcnt; ++i)	855	for (i = 0; i < eventcnt; ++i)
599	ev_feed_event (EV_A_ events [i], type);	856	ev_feed_event (EV_A_ events [i], type);
600	}	857	}
601		858
602	/*****************************************************************************/	859	/*****************************************************************************/
603		860
604	void inline_size	861	inline_speed void
605	anfds_init (ANFD *base, int count)
606	{
607	while (count--)
608	{
609	base->head = 0;
610	base->events = EV_NONE;
611	base->reify = 0;
612
613	++base;
614	}
615	}
616
617	void inline_speed
618	fd_event (EV_P_ int fd, int revents)	862	fd_event_nc (EV_P_ int fd, int revents)
619	{	863	{
620	ANFD *anfd = anfds + fd;	864	ANFD *anfd = anfds + fd;
621	ev_io *w;	865	ev_io *w;
622		866
623	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	867	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
627	if (ev)	871	if (ev)
628	ev_feed_event (EV_A_ (W)w, ev);	872	ev_feed_event (EV_A_ (W)w, ev);
629	}	873	}
630	}	874	}
631		875
		876	/* do not submit kernel events for fds that have reify set */
		877	/* because that means they changed while we were polling for new events */
		878	inline_speed void
		879	fd_event (EV_P_ int fd, int revents)
		880	{
		881	ANFD *anfd = anfds + fd;
		882
		883	if (expect_true (!anfd->reify))
		884	fd_event_nc (EV_A_ fd, revents);
		885	}
		886
632	void	887	void
633	ev_feed_fd_event (EV_P_ int fd, int revents)	888	ev_feed_fd_event (EV_P_ int fd, int revents)
634	{	889	{
635	if (fd >= 0 && fd < anfdmax)	890	if (fd >= 0 && fd < anfdmax)
636	fd_event (EV_A_ fd, revents);	891	fd_event_nc (EV_A_ fd, revents);
637	}	892	}
638		893
639	void inline_size	894	/* make sure the external fd watch events are in-sync */
		895	/* with the kernel/libev internal state */
		896	inline_size void
640	fd_reify (EV_P)	897	fd_reify (EV_P)
641	{	898	{
642	int i;	899	int i;
643		900
644	for (i = 0; i < fdchangecnt; ++i)	901	for (i = 0; i < fdchangecnt; ++i)
…		…
653	events |= (unsigned char)w->events;	910	events |= (unsigned char)w->events;
654		911
655	#if EV_SELECT_IS_WINSOCKET	912	#if EV_SELECT_IS_WINSOCKET
656	if (events)	913	if (events)
657	{	914	{
658	unsigned long argp;	915	unsigned long arg;
659	#ifdef EV_FD_TO_WIN32_HANDLE
660	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	916	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
661	#else
662	anfd->handle = _get_osfhandle (fd);
663	#endif
664	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	917	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
665	}	918	}
666	#endif	919	#endif
667		920
668	{	921	{
669	unsigned char o_events = anfd->events;	922	unsigned char o_events = anfd->events;
670	unsigned char o_reify = anfd->reify;	923	unsigned char o_reify = anfd->reify;
671		924
672	anfd->reify = 0;	925	anfd->reify = 0;
673	anfd->events = events;	926	anfd->events = events;
674		927
675	if (o_events != events || o_reify & EV_IOFDSET)	928	if (o_events != events || o_reify & EV__IOFDSET)
676	backend_modify (EV_A_ fd, o_events, events);	929	backend_modify (EV_A_ fd, o_events, events);
677	}	930	}
678	}	931	}
679		932
680	fdchangecnt = 0;	933	fdchangecnt = 0;
681	}	934	}
682		935
683	void inline_size	936	/* something about the given fd changed */
		937	inline_size void
684	fd_change (EV_P_ int fd, int flags)	938	fd_change (EV_P_ int fd, int flags)
685	{	939	{
686	unsigned char reify = anfds [fd].reify;	940	unsigned char reify = anfds [fd].reify;
687	anfds [fd].reify |= flags;	941	anfds [fd].reify |= flags;
688		942
…		…
692	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	946	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
693	fdchanges [fdchangecnt - 1] = fd;	947	fdchanges [fdchangecnt - 1] = fd;
694	}	948	}
695	}	949	}
696		950
697	void inline_speed	951	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		952	inline_speed void
698	fd_kill (EV_P_ int fd)	953	fd_kill (EV_P_ int fd)
699	{	954	{
700	ev_io *w;	955	ev_io *w;
701		956
702	while ((w = (ev_io *)anfds [fd].head))	957	while ((w = (ev_io *)anfds [fd].head))
…		…
704	ev_io_stop (EV_A_ w);	959	ev_io_stop (EV_A_ w);
705	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	960	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
706	}	961	}
707	}	962	}
708		963
709	int inline_size	964	/* check whether the given fd is atcually valid, for error recovery */
		965	inline_size int
710	fd_valid (int fd)	966	fd_valid (int fd)
711	{	967	{
712	#ifdef _WIN32	968	#ifdef _WIN32
713	return _get_osfhandle (fd) != -1;	969	return _get_osfhandle (fd) != -1;
714	#else	970	#else
…		…
722	{	978	{
723	int fd;	979	int fd;
724		980
725	for (fd = 0; fd < anfdmax; ++fd)	981	for (fd = 0; fd < anfdmax; ++fd)
726	if (anfds [fd].events)	982	if (anfds [fd].events)
727	if (!fd_valid (fd) == -1 && errno == EBADF)	983	if (!fd_valid (fd) && errno == EBADF)
728	fd_kill (EV_A_ fd);	984	fd_kill (EV_A_ fd);
729	}	985	}
730		986
731	/* called on ENOMEM in select/poll to kill some fds and retry */	987	/* called on ENOMEM in select/poll to kill some fds and retry */
732	static void noinline	988	static void noinline
…		…
736		992
737	for (fd = anfdmax; fd--; )	993	for (fd = anfdmax; fd--; )
738	if (anfds [fd].events)	994	if (anfds [fd].events)
739	{	995	{
740	fd_kill (EV_A_ fd);	996	fd_kill (EV_A_ fd);
741	return;	997	break;
742	}	998	}
743	}	999	}
744		1000
745	/* usually called after fork if backend needs to re-arm all fds from scratch */	1001	/* usually called after fork if backend needs to re-arm all fds from scratch */
746	static void noinline	1002	static void noinline
…		…
750		1006
751	for (fd = 0; fd < anfdmax; ++fd)	1007	for (fd = 0; fd < anfdmax; ++fd)
752	if (anfds [fd].events)	1008	if (anfds [fd].events)
753	{	1009	{
754	anfds [fd].events = 0;	1010	anfds [fd].events = 0;
		1011	anfds [fd].emask = 0;
755	fd_change (EV_A_ fd, EV_IOFDSET | 1);	1012	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
756	}	1013	}
757	}	1014	}
758		1015
759	/*****************************************************************************/	1016	/*****************************************************************************/
760		1017
		1018	/*
		1019	* the heap functions want a real array index. array index 0 uis guaranteed to not
		1020	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		1021	* the branching factor of the d-tree.
		1022	*/
		1023
		1024	/*
		1025	* at the moment we allow libev the luxury of two heaps,
		1026	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		1027	* which is more cache-efficient.
		1028	* the difference is about 5% with 50000+ watchers.
		1029	*/
		1030	#if EV_USE_4HEAP
		1031
		1032	#define DHEAP 4
		1033	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		1034	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		1035	#define UPHEAP_DONE(p,k) ((p) == (k))
		1036
		1037	/* away from the root */
		1038	inline_speed void
		1039	downheap (ANHE *heap, int N, int k)
		1040	{
		1041	ANHE he = heap [k];
		1042	ANHE *E = heap + N + HEAP0;
		1043
		1044	for (;;)
		1045	{
		1046	ev_tstamp minat;
		1047	ANHE *minpos;
		1048	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
		1049
		1050	/* find minimum child */
		1051	if (expect_true (pos + DHEAP - 1 < E))
		1052	{
		1053	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1054	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1055	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1056	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1057	}
		1058	else if (pos < E)
		1059	{
		1060	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1061	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1062	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1063	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1064	}
		1065	else
		1066	break;
		1067
		1068	if (ANHE_at (he) <= minat)
		1069	break;
		1070
		1071	heap [k] = *minpos;
		1072	ev_active (ANHE_w (*minpos)) = k;
		1073
		1074	k = minpos - heap;
		1075	}
		1076
		1077	heap [k] = he;
		1078	ev_active (ANHE_w (he)) = k;
		1079	}
		1080
		1081	#else /* 4HEAP */
		1082
		1083	#define HEAP0 1
		1084	#define HPARENT(k) ((k) >> 1)
		1085	#define UPHEAP_DONE(p,k) (!(p))
		1086
		1087	/* away from the root */
		1088	inline_speed void
		1089	downheap (ANHE *heap, int N, int k)
		1090	{
		1091	ANHE he = heap [k];
		1092
		1093	for (;;)
		1094	{
		1095	int c = k << 1;
		1096
		1097	if (c >= N + HEAP0)
		1098	break;
		1099
		1100	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		1101	? 1 : 0;
		1102
		1103	if (ANHE_at (he) <= ANHE_at (heap [c]))
		1104	break;
		1105
		1106	heap [k] = heap [c];
		1107	ev_active (ANHE_w (heap [k])) = k;
		1108
		1109	k = c;
		1110	}
		1111
		1112	heap [k] = he;
		1113	ev_active (ANHE_w (he)) = k;
		1114	}
		1115	#endif
		1116
761	/* towards the root */	1117	/* towards the root */
762	void inline_speed	1118	inline_speed void
763	upheap (WT *heap, int k)	1119	upheap (ANHE *heap, int k)
764	{	1120	{
765	WT w = heap [k];	1121	ANHE he = heap [k];
766		1122
767	for (;;)	1123	for (;;)
768	{	1124	{
769	int p = k >> 1;	1125	int p = HPARENT (k);
770		1126
771	/* maybe we could use a dummy element at heap [0]? */	1127	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
772	if (!p || heap [p]->at <= w->at)
773	break;	1128	break;
774		1129
775	heap [k] = heap [p];	1130	heap [k] = heap [p];
776	((W)heap [k])->active = k;	1131	ev_active (ANHE_w (heap [k])) = k;
777	k = p;	1132	k = p;
778	}	1133	}
779		1134
780	heap [k] = w;	1135	heap [k] = he;
781	((W)heap [k])->active = k;	1136	ev_active (ANHE_w (he)) = k;
782	}	1137	}
783		1138
784	/* away from the root */	1139	/* move an element suitably so it is in a correct place */
785	void inline_speed	1140	inline_size void
786	downheap (WT *heap, int N, int k)
787	{
788	WT w = heap [k];
789
790	for (;;)
791	{
792	int c = k << 1;
793
794	if (c > N)
795	break;
796
797	c += c < N && heap [c]->at > heap [c + 1]->at
798	? 1 : 0;
799
800	if (w->at <= heap [c]->at)
801	break;
802
803	heap [k] = heap [c];
804	((W)heap [k])->active = k;
805
806	k = c;
807	}
808
809	heap [k] = w;
810	((W)heap [k])->active = k;
811	}
812
813	void inline_size
814	adjustheap (WT *heap, int N, int k)	1141	adjustheap (ANHE *heap, int N, int k)
815	{	1142	{
		1143	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
816	upheap (heap, k);	1144	upheap (heap, k);
		1145	else
817	downheap (heap, N, k);	1146	downheap (heap, N, k);
		1147	}
		1148
		1149	/* rebuild the heap: this function is used only once and executed rarely */
		1150	inline_size void
		1151	reheap (ANHE *heap, int N)
		1152	{
		1153	int i;
		1154
		1155	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1156	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1157	for (i = 0; i < N; ++i)
		1158	upheap (heap, i + HEAP0);
818	}	1159	}
819		1160
820	/*****************************************************************************/	1161	/*****************************************************************************/
821		1162
		1163	/* associate signal watchers to a signal signal */
822	typedef struct	1164	typedef struct
823	{	1165	{
		1166	EV_ATOMIC_T pending;
		1167	#if EV_MULTIPLICITY
		1168	EV_P;
		1169	#endif
824	WL head;	1170	WL head;
825	EV_ATOMIC_T gotsig;
826	} ANSIG;	1171	} ANSIG;
827		1172
828	static ANSIG *signals;	1173	static ANSIG signals [EV_NSIG - 1];
829	static int signalmax;
830
831	static EV_ATOMIC_T gotsig;
832
833	void inline_size
834	signals_init (ANSIG *base, int count)
835	{
836	while (count--)
837	{
838	base->head = 0;
839	base->gotsig = 0;
840
841	++base;
842	}
843	}
844		1174
845	/*****************************************************************************/	1175	/*****************************************************************************/
846		1176
847	void inline_speed	1177	/* used to prepare libev internal fd's */
		1178	/* this is not fork-safe */
		1179	inline_speed void
848	fd_intern (int fd)	1180	fd_intern (int fd)
849	{	1181	{
850	#ifdef _WIN32	1182	#ifdef _WIN32
851	int arg = 1;	1183	unsigned long arg = 1;
852	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1184	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
853	#else	1185	#else
854	fcntl (fd, F_SETFD, FD_CLOEXEC);	1186	fcntl (fd, F_SETFD, FD_CLOEXEC);
855	fcntl (fd, F_SETFL, O_NONBLOCK);	1187	fcntl (fd, F_SETFL, O_NONBLOCK);
856	#endif	1188	#endif
857	}	1189	}
858		1190
859	static void noinline	1191	static void noinline
860	evpipe_init (EV_P)	1192	evpipe_init (EV_P)
861	{	1193	{
862	if (!ev_is_active (&pipeev))	1194	if (!ev_is_active (&pipe_w))
863	{	1195	{
864	#if EV_USE_EVENTFD	1196	#if EV_USE_EVENTFD
		1197	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1198	if (evfd < 0 && errno == EINVAL)
865	if ((evfd = eventfd (0, 0)) >= 0)	1199	evfd = eventfd (0, 0);
		1200
		1201	if (evfd >= 0)
866	{	1202	{
867	evpipe [0] = -1;	1203	evpipe [0] = -1;
868	fd_intern (evfd);	1204	fd_intern (evfd); /* doing it twice doesn't hurt */
869	ev_io_set (&pipeev, evfd, EV_READ);	1205	ev_io_set (&pipe_w, evfd, EV_READ);
870	}	1206	}
871	else	1207	else
872	#endif	1208	#endif
873	{	1209	{
874	while (pipe (evpipe))	1210	while (pipe (evpipe))
875	syserr ("(libev) error creating signal/async pipe");	1211	ev_syserr ("(libev) error creating signal/async pipe");
876		1212
877	fd_intern (evpipe [0]);	1213	fd_intern (evpipe [0]);
878	fd_intern (evpipe [1]);	1214	fd_intern (evpipe [1]);
879	ev_io_set (&pipeev, evpipe [0], EV_READ);	1215	ev_io_set (&pipe_w, evpipe [0], EV_READ);
880	}	1216	}
881		1217
882	ev_io_start (EV_A_ &pipeev);	1218	ev_io_start (EV_A_ &pipe_w);
883	ev_unref (EV_A); /* watcher should not keep loop alive */	1219	ev_unref (EV_A); /* watcher should not keep loop alive */
884	}	1220	}
885	}	1221	}
886		1222
887	void inline_size	1223	inline_size void
888	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1224	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
889	{	1225	{
890	if (!*flag)	1226	if (!*flag)
891	{	1227	{
892	int old_errno = errno; /* save errno because write might clobber it */	1228	int old_errno = errno; /* save errno because write might clobber it */
…		…
905		1241
906	errno = old_errno;	1242	errno = old_errno;
907	}	1243	}
908	}	1244	}
909		1245
		1246	/* called whenever the libev signal pipe */
		1247	/* got some events (signal, async) */
910	static void	1248	static void
911	pipecb (EV_P_ ev_io *iow, int revents)	1249	pipecb (EV_P_ ev_io *iow, int revents)
912	{	1250	{
		1251	int i;
		1252
913	#if EV_USE_EVENTFD	1253	#if EV_USE_EVENTFD
914	if (evfd >= 0)	1254	if (evfd >= 0)
915	{	1255	{
916	uint64_t counter = 1;	1256	uint64_t counter;
917	read (evfd, &counter, sizeof (uint64_t));	1257	read (evfd, &counter, sizeof (uint64_t));
918	}	1258	}
919	else	1259	else
920	#endif	1260	#endif
921	{	1261	{
922	char dummy;	1262	char dummy;
923	read (evpipe [0], &dummy, 1);	1263	read (evpipe [0], &dummy, 1);
924	}	1264	}
925		1265
926	if (gotsig && ev_is_default_loop (EV_A))	1266	if (sig_pending)
927	{	1267	{
928	int signum;	1268	sig_pending = 0;
929	gotsig = 0;
930		1269
931	for (signum = signalmax; signum--; )	1270	for (i = EV_NSIG - 1; i--; )
932	if (signals [signum].gotsig)	1271	if (expect_false (signals [i].pending))
933	ev_feed_signal_event (EV_A_ signum + 1);	1272	ev_feed_signal_event (EV_A_ i + 1);
934	}	1273	}
935		1274
936	#if EV_ASYNC_ENABLE	1275	#if EV_ASYNC_ENABLE
937	if (gotasync)	1276	if (async_pending)
938	{	1277	{
939	int i;	1278	async_pending = 0;
940	gotasync = 0;
941		1279
942	for (i = asynccnt; i--; )	1280	for (i = asynccnt; i--; )
943	if (asyncs [i]->sent)	1281	if (asyncs [i]->sent)
944	{	1282	{
945	asyncs [i]->sent = 0;	1283	asyncs [i]->sent = 0;
…		…
953		1291
954	static void	1292	static void
955	ev_sighandler (int signum)	1293	ev_sighandler (int signum)
956	{	1294	{
957	#if EV_MULTIPLICITY	1295	#if EV_MULTIPLICITY
958	struct ev_loop *loop = &default_loop_struct;	1296	EV_P = signals [signum - 1].loop;
959	#endif	1297	#endif
960		1298
961	#if _WIN32	1299	#if _WIN32
962	signal (signum, ev_sighandler);	1300	signal (signum, ev_sighandler);
963	#endif	1301	#endif
964		1302
965	signals [signum - 1].gotsig = 1;	1303	signals [signum - 1].pending = 1;
966	evpipe_write (EV_A_ &gotsig);	1304	evpipe_write (EV_A_ &sig_pending);
967	}	1305	}
968		1306
969	void noinline	1307	void noinline
970	ev_feed_signal_event (EV_P_ int signum)	1308	ev_feed_signal_event (EV_P_ int signum)
971	{	1309	{
972	WL w;	1310	WL w;
973		1311
		1312	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1313	return;
		1314
		1315	--signum;
		1316
974	#if EV_MULTIPLICITY	1317	#if EV_MULTIPLICITY
975	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1318	/* it is permissible to try to feed a signal to the wrong loop */
976	#endif	1319	/* or, likely more useful, feeding a signal nobody is waiting for */
977		1320
978	--signum;	1321	if (expect_false (signals [signum].loop != EV_A))
979
980	if (signum < 0 || signum >= signalmax)
981	return;	1322	return;
		1323	#endif
982		1324
983	signals [signum].gotsig = 0;	1325	signals [signum].pending = 0;
984		1326
985	for (w = signals [signum].head; w; w = w->next)	1327	for (w = signals [signum].head; w; w = w->next)
986	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1328	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
987	}	1329	}
988		1330
		1331	#if EV_USE_SIGNALFD
		1332	static void
		1333	sigfdcb (EV_P_ ev_io *iow, int revents)
		1334	{
		1335	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1336
		1337	for (;;)
		1338	{
		1339	ssize_t res = read (sigfd, si, sizeof (si));
		1340
		1341	/* not ISO-C, as res might be -1, but works with SuS */
		1342	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1343	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1344
		1345	if (res < (ssize_t)sizeof (si))
		1346	break;
		1347	}
		1348	}
		1349	#endif
		1350
989	/*****************************************************************************/	1351	/*****************************************************************************/
990		1352
991	static WL childs [EV_PID_HASHSIZE];	1353	static WL childs [EV_PID_HASHSIZE];
992		1354
993	#ifndef _WIN32	1355	#ifndef _WIN32
…		…
996		1358
997	#ifndef WIFCONTINUED	1359	#ifndef WIFCONTINUED
998	# define WIFCONTINUED(status) 0	1360	# define WIFCONTINUED(status) 0
999	#endif	1361	#endif
1000		1362
1001	void inline_speed	1363	/* handle a single child status event */
		1364	inline_speed void
1002	child_reap (EV_P_ int chain, int pid, int status)	1365	child_reap (EV_P_ int chain, int pid, int status)
1003	{	1366	{
1004	ev_child *w;	1367	ev_child *w;
1005	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1368	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1006		1369
…		…
1019		1382
1020	#ifndef WCONTINUED	1383	#ifndef WCONTINUED
1021	# define WCONTINUED 0	1384	# define WCONTINUED 0
1022	#endif	1385	#endif
1023		1386
		1387	/* called on sigchld etc., calls waitpid */
1024	static void	1388	static void
1025	childcb (EV_P_ ev_signal *sw, int revents)	1389	childcb (EV_P_ ev_signal *sw, int revents)
1026	{	1390	{
1027	int pid, status;	1391	int pid, status;
1028		1392
…		…
1109	/* kqueue is borked on everything but netbsd apparently */	1473	/* kqueue is borked on everything but netbsd apparently */
1110	/* it usually doesn't work correctly on anything but sockets and pipes */	1474	/* it usually doesn't work correctly on anything but sockets and pipes */
1111	flags &= ~EVBACKEND_KQUEUE;	1475	flags &= ~EVBACKEND_KQUEUE;
1112	#endif	1476	#endif
1113	#ifdef __APPLE__	1477	#ifdef __APPLE__
1114	// flags &= ~EVBACKEND_KQUEUE; for documentation	1478	/* only select works correctly on that "unix-certified" platform */
1115	flags &= ~EVBACKEND_POLL;	1479	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1480	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1116	#endif	1481	#endif
1117		1482
1118	return flags;	1483	return flags;
1119	}	1484	}
1120		1485
…		…
1134	ev_backend (EV_P)	1499	ev_backend (EV_P)
1135	{	1500	{
1136	return backend;	1501	return backend;
1137	}	1502	}
1138		1503
		1504	#if EV_MINIMAL < 2
1139	unsigned int	1505	unsigned int
1140	ev_loop_count (EV_P)	1506	ev_loop_count (EV_P)
1141	{	1507	{
1142	return loop_count;	1508	return loop_count;
1143	}	1509	}
1144		1510
		1511	unsigned int
		1512	ev_loop_depth (EV_P)
		1513	{
		1514	return loop_depth;
		1515	}
		1516
1145	void	1517	void
1146	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1518	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1147	{	1519	{
1148	io_blocktime = interval;	1520	io_blocktime = interval;
1149	}	1521	}
…		…
1152	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1524	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1153	{	1525	{
1154	timeout_blocktime = interval;	1526	timeout_blocktime = interval;
1155	}	1527	}
1156		1528
		1529	void
		1530	ev_set_userdata (EV_P_ void *data)
		1531	{
		1532	userdata = data;
		1533	}
		1534
		1535	void *
		1536	ev_userdata (EV_P)
		1537	{
		1538	return userdata;
		1539	}
		1540
		1541	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1542	{
		1543	invoke_cb = invoke_pending_cb;
		1544	}
		1545
		1546	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1547	{
		1548	release_cb = release;
		1549	acquire_cb = acquire;
		1550	}
		1551	#endif
		1552
		1553	/* initialise a loop structure, must be zero-initialised */
1157	static void noinline	1554	static void noinline
1158	loop_init (EV_P_ unsigned int flags)	1555	loop_init (EV_P_ unsigned int flags)
1159	{	1556	{
1160	if (!backend)	1557	if (!backend)
1161	{	1558	{
		1559	#if EV_USE_REALTIME
		1560	if (!have_realtime)
		1561	{
		1562	struct timespec ts;
		1563
		1564	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1565	have_realtime = 1;
		1566	}
		1567	#endif
		1568
1162	#if EV_USE_MONOTONIC	1569	#if EV_USE_MONOTONIC
		1570	if (!have_monotonic)
1163	{	1571	{
1164	struct timespec ts;	1572	struct timespec ts;
		1573
1165	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1574	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1166	have_monotonic = 1;	1575	have_monotonic = 1;
1167	}	1576	}
1168	#endif	1577	#endif
		1578
		1579	/* pid check not overridable via env */
		1580	#ifndef _WIN32
		1581	if (flags & EVFLAG_FORKCHECK)
		1582	curpid = getpid ();
		1583	#endif
		1584
		1585	if (!(flags & EVFLAG_NOENV)
		1586	&& !enable_secure ()
		1587	&& getenv ("LIBEV_FLAGS"))
		1588	flags = atoi (getenv ("LIBEV_FLAGS"));
1169		1589
1170	ev_rt_now = ev_time ();	1590	ev_rt_now = ev_time ();
1171	mn_now = get_clock ();	1591	mn_now = get_clock ();
1172	now_floor = mn_now;	1592	now_floor = mn_now;
1173	rtmn_diff = ev_rt_now - mn_now;	1593	rtmn_diff = ev_rt_now - mn_now;
		1594	#if EV_MINIMAL < 2
		1595	invoke_cb = ev_invoke_pending;
		1596	#endif
1174		1597
1175	io_blocktime = 0.;	1598	io_blocktime = 0.;
1176	timeout_blocktime = 0.;	1599	timeout_blocktime = 0.;
1177	backend = 0;	1600	backend = 0;
1178	backend_fd = -1;	1601	backend_fd = -1;
1179	gotasync = 0;	1602	sig_pending = 0;
		1603	#if EV_ASYNC_ENABLE
		1604	async_pending = 0;
		1605	#endif
1180	#if EV_USE_INOTIFY	1606	#if EV_USE_INOTIFY
1181	fs_fd = -2;	1607	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1182	#endif	1608	#endif
1183		1609	#if EV_USE_SIGNALFD
1184	/* pid check not overridable via env */	1610	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1185	#ifndef _WIN32
1186	if (flags & EVFLAG_FORKCHECK)
1187	curpid = getpid ();
1188	#endif	1611	#endif
1189
1190	if (!(flags & EVFLAG_NOENV)
1191	&& !enable_secure ()
1192	&& getenv ("LIBEV_FLAGS"))
1193	flags = atoi (getenv ("LIBEV_FLAGS"));
1194		1612
1195	if (!(flags & 0x0000ffffU))	1613	if (!(flags & 0x0000ffffU))
1196	flags |= ev_recommended_backends ();	1614	flags |= ev_recommended_backends ();
1197		1615
1198	#if EV_USE_PORT	1616	#if EV_USE_PORT
…		…
1209	#endif	1627	#endif
1210	#if EV_USE_SELECT	1628	#if EV_USE_SELECT
1211	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1629	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1212	#endif	1630	#endif
1213		1631
		1632	ev_prepare_init (&pending_w, pendingcb);
		1633
1214	ev_init (&pipeev, pipecb);	1634	ev_init (&pipe_w, pipecb);
1215	ev_set_priority (&pipeev, EV_MAXPRI);	1635	ev_set_priority (&pipe_w, EV_MAXPRI);
1216	}	1636	}
1217	}	1637	}
1218		1638
		1639	/* free up a loop structure */
1219	static void noinline	1640	static void noinline
1220	loop_destroy (EV_P)	1641	loop_destroy (EV_P)
1221	{	1642	{
1222	int i;	1643	int i;
1223		1644
1224	if (ev_is_active (&pipeev))	1645	if (ev_is_active (&pipe_w))
1225	{	1646	{
1226	ev_ref (EV_A); /* signal watcher */	1647	/*ev_ref (EV_A);*/
1227	ev_io_stop (EV_A_ &pipeev);	1648	/*ev_io_stop (EV_A_ &pipe_w);*/
1228		1649
1229	#if EV_USE_EVENTFD	1650	#if EV_USE_EVENTFD
1230	if (evfd >= 0)	1651	if (evfd >= 0)
1231	close (evfd);	1652	close (evfd);
1232	#endif	1653	#endif
1233		1654
1234	if (evpipe [0] >= 0)	1655	if (evpipe [0] >= 0)
1235	{	1656	{
1236	close (evpipe [0]);	1657	EV_WIN32_CLOSE_FD (evpipe [0]);
1237	close (evpipe [1]);	1658	EV_WIN32_CLOSE_FD (evpipe [1]);
1238	}	1659	}
1239	}	1660	}
		1661
		1662	#if EV_USE_SIGNALFD
		1663	if (ev_is_active (&sigfd_w))
		1664	{
		1665	/*ev_ref (EV_A);*/
		1666	/*ev_io_stop (EV_A_ &sigfd_w);*/
		1667
		1668	close (sigfd);
		1669	}
		1670	#endif
1240		1671
1241	#if EV_USE_INOTIFY	1672	#if EV_USE_INOTIFY
1242	if (fs_fd >= 0)	1673	if (fs_fd >= 0)
1243	close (fs_fd);	1674	close (fs_fd);
1244	#endif	1675	#endif
…		…
1268	#if EV_IDLE_ENABLE	1699	#if EV_IDLE_ENABLE
1269	array_free (idle, [i]);	1700	array_free (idle, [i]);
1270	#endif	1701	#endif
1271	}	1702	}
1272		1703
1273	ev_free (anfds); anfdmax = 0;	1704	ev_free (anfds); anfds = 0; anfdmax = 0;
1274		1705
1275	/* have to use the microsoft-never-gets-it-right macro */	1706	/* have to use the microsoft-never-gets-it-right macro */
		1707	array_free (rfeed, EMPTY);
1276	array_free (fdchange, EMPTY);	1708	array_free (fdchange, EMPTY);
1277	array_free (timer, EMPTY);	1709	array_free (timer, EMPTY);
1278	#if EV_PERIODIC_ENABLE	1710	#if EV_PERIODIC_ENABLE
1279	array_free (periodic, EMPTY);	1711	array_free (periodic, EMPTY);
1280	#endif	1712	#endif
…		…
1289		1721
1290	backend = 0;	1722	backend = 0;
1291	}	1723	}
1292		1724
1293	#if EV_USE_INOTIFY	1725	#if EV_USE_INOTIFY
1294	void inline_size infy_fork (EV_P);	1726	inline_size void infy_fork (EV_P);
1295	#endif	1727	#endif
1296		1728
1297	void inline_size	1729	inline_size void
1298	loop_fork (EV_P)	1730	loop_fork (EV_P)
1299	{	1731	{
1300	#if EV_USE_PORT	1732	#if EV_USE_PORT
1301	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1733	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1302	#endif	1734	#endif
…		…
1308	#endif	1740	#endif
1309	#if EV_USE_INOTIFY	1741	#if EV_USE_INOTIFY
1310	infy_fork (EV_A);	1742	infy_fork (EV_A);
1311	#endif	1743	#endif
1312		1744
1313	if (ev_is_active (&pipeev))	1745	if (ev_is_active (&pipe_w))
1314	{	1746	{
1315	/* this "locks" the handlers against writing to the pipe */	1747	/* this "locks" the handlers against writing to the pipe */
1316	/* while we modify the fd vars */	1748	/* while we modify the fd vars */
1317	gotsig = 1;	1749	sig_pending = 1;
1318	#if EV_ASYNC_ENABLE	1750	#if EV_ASYNC_ENABLE
1319	gotasync = 1;	1751	async_pending = 1;
1320	#endif	1752	#endif
1321		1753
1322	ev_ref (EV_A);	1754	ev_ref (EV_A);
1323	ev_io_stop (EV_A_ &pipeev);	1755	ev_io_stop (EV_A_ &pipe_w);
1324		1756
1325	#if EV_USE_EVENTFD	1757	#if EV_USE_EVENTFD
1326	if (evfd >= 0)	1758	if (evfd >= 0)
1327	close (evfd);	1759	close (evfd);
1328	#endif	1760	#endif
1329		1761
1330	if (evpipe [0] >= 0)	1762	if (evpipe [0] >= 0)
1331	{	1763	{
1332	close (evpipe [0]);	1764	EV_WIN32_CLOSE_FD (evpipe [0]);
1333	close (evpipe [1]);	1765	EV_WIN32_CLOSE_FD (evpipe [1]);
1334	}	1766	}
1335		1767
1336	evpipe_init (EV_A);	1768	evpipe_init (EV_A);
1337	/* now iterate over everything, in case we missed something */	1769	/* now iterate over everything, in case we missed something */
1338	pipecb (EV_A_ &pipeev, EV_READ);	1770	pipecb (EV_A_ &pipe_w, EV_READ);
1339	}	1771	}
1340		1772
1341	postfork = 0;	1773	postfork = 0;
1342	}	1774	}
1343		1775
1344	#if EV_MULTIPLICITY	1776	#if EV_MULTIPLICITY
		1777
1345	struct ev_loop *	1778	struct ev_loop *
1346	ev_loop_new (unsigned int flags)	1779	ev_loop_new (unsigned int flags)
1347	{	1780	{
1348	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1781	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1349		1782
1350	memset (loop, 0, sizeof (struct ev_loop));	1783	memset (EV_A, 0, sizeof (struct ev_loop));
1351
1352	loop_init (EV_A_ flags);	1784	loop_init (EV_A_ flags);
1353		1785
1354	if (ev_backend (EV_A))	1786	if (ev_backend (EV_A))
1355	return loop;	1787	return EV_A;
1356		1788
1357	return 0;	1789	return 0;
1358	}	1790	}
1359		1791
1360	void	1792	void
…		…
1367	void	1799	void
1368	ev_loop_fork (EV_P)	1800	ev_loop_fork (EV_P)
1369	{	1801	{
1370	postfork = 1; /* must be in line with ev_default_fork */	1802	postfork = 1; /* must be in line with ev_default_fork */
1371	}	1803	}
		1804	#endif /* multiplicity */
1372		1805
		1806	#if EV_VERIFY
		1807	static void noinline
		1808	verify_watcher (EV_P_ W w)
		1809	{
		1810	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1811
		1812	if (w->pending)
		1813	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1814	}
		1815
		1816	static void noinline
		1817	verify_heap (EV_P_ ANHE *heap, int N)
		1818	{
		1819	int i;
		1820
		1821	for (i = HEAP0; i < N + HEAP0; ++i)
		1822	{
		1823	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1824	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1825	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1826
		1827	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1828	}
		1829	}
		1830
		1831	static void noinline
		1832	array_verify (EV_P_ W *ws, int cnt)
		1833	{
		1834	while (cnt--)
		1835	{
		1836	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1837	verify_watcher (EV_A_ ws [cnt]);
		1838	}
		1839	}
		1840	#endif
		1841
		1842	#if EV_MINIMAL < 2
		1843	void
		1844	ev_loop_verify (EV_P)
		1845	{
		1846	#if EV_VERIFY
		1847	int i;
		1848	WL w;
		1849
		1850	assert (activecnt >= -1);
		1851
		1852	assert (fdchangemax >= fdchangecnt);
		1853	for (i = 0; i < fdchangecnt; ++i)
		1854	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1855
		1856	assert (anfdmax >= 0);
		1857	for (i = 0; i < anfdmax; ++i)
		1858	for (w = anfds [i].head; w; w = w->next)
		1859	{
		1860	verify_watcher (EV_A_ (W)w);
		1861	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1862	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1863	}
		1864
		1865	assert (timermax >= timercnt);
		1866	verify_heap (EV_A_ timers, timercnt);
		1867
		1868	#if EV_PERIODIC_ENABLE
		1869	assert (periodicmax >= periodiccnt);
		1870	verify_heap (EV_A_ periodics, periodiccnt);
		1871	#endif
		1872
		1873	for (i = NUMPRI; i--; )
		1874	{
		1875	assert (pendingmax [i] >= pendingcnt [i]);
		1876	#if EV_IDLE_ENABLE
		1877	assert (idleall >= 0);
		1878	assert (idlemax [i] >= idlecnt [i]);
		1879	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1880	#endif
		1881	}
		1882
		1883	#if EV_FORK_ENABLE
		1884	assert (forkmax >= forkcnt);
		1885	array_verify (EV_A_ (W *)forks, forkcnt);
		1886	#endif
		1887
		1888	#if EV_ASYNC_ENABLE
		1889	assert (asyncmax >= asynccnt);
		1890	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1891	#endif
		1892
		1893	assert (preparemax >= preparecnt);
		1894	array_verify (EV_A_ (W *)prepares, preparecnt);
		1895
		1896	assert (checkmax >= checkcnt);
		1897	array_verify (EV_A_ (W *)checks, checkcnt);
		1898
		1899	# if 0
		1900	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1901	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		1902	# endif
		1903	#endif
		1904	}
1373	#endif	1905	#endif
1374		1906
1375	#if EV_MULTIPLICITY	1907	#if EV_MULTIPLICITY
1376	struct ev_loop *	1908	struct ev_loop *
1377	ev_default_loop_init (unsigned int flags)	1909	ev_default_loop_init (unsigned int flags)
…		…
1381	#endif	1913	#endif
1382	{	1914	{
1383	if (!ev_default_loop_ptr)	1915	if (!ev_default_loop_ptr)
1384	{	1916	{
1385	#if EV_MULTIPLICITY	1917	#if EV_MULTIPLICITY
1386	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1918	EV_P = ev_default_loop_ptr = &default_loop_struct;
1387	#else	1919	#else
1388	ev_default_loop_ptr = 1;	1920	ev_default_loop_ptr = 1;
1389	#endif	1921	#endif
1390		1922
1391	loop_init (EV_A_ flags);	1923	loop_init (EV_A_ flags);
…		…
1408		1940
1409	void	1941	void
1410	ev_default_destroy (void)	1942	ev_default_destroy (void)
1411	{	1943	{
1412	#if EV_MULTIPLICITY	1944	#if EV_MULTIPLICITY
1413	struct ev_loop *loop = ev_default_loop_ptr;	1945	EV_P = ev_default_loop_ptr;
1414	#endif	1946	#endif
		1947
		1948	ev_default_loop_ptr = 0;
1415		1949
1416	#ifndef _WIN32	1950	#ifndef _WIN32
1417	ev_ref (EV_A); /* child watcher */	1951	ev_ref (EV_A); /* child watcher */
1418	ev_signal_stop (EV_A_ &childev);	1952	ev_signal_stop (EV_A_ &childev);
1419	#endif	1953	#endif
…		…
1423		1957
1424	void	1958	void
1425	ev_default_fork (void)	1959	ev_default_fork (void)
1426	{	1960	{
1427	#if EV_MULTIPLICITY	1961	#if EV_MULTIPLICITY
1428	struct ev_loop *loop = ev_default_loop_ptr;	1962	EV_P = ev_default_loop_ptr;
1429	#endif	1963	#endif
1430		1964
1431	if (backend)
1432	postfork = 1; /* must be in line with ev_loop_fork */	1965	postfork = 1; /* must be in line with ev_loop_fork */
1433	}	1966	}
1434		1967
1435	/*****************************************************************************/	1968	/*****************************************************************************/
1436		1969
1437	void	1970	void
1438	ev_invoke (EV_P_ void *w, int revents)	1971	ev_invoke (EV_P_ void *w, int revents)
1439	{	1972	{
1440	EV_CB_INVOKE ((W)w, revents);	1973	EV_CB_INVOKE ((W)w, revents);
1441	}	1974	}
1442		1975
1443	void inline_speed	1976	unsigned int
1444	call_pending (EV_P)	1977	ev_pending_count (EV_P)
		1978	{
		1979	int pri;
		1980	unsigned int count = 0;
		1981
		1982	for (pri = NUMPRI; pri--; )
		1983	count += pendingcnt [pri];
		1984
		1985	return count;
		1986	}
		1987
		1988	void noinline
		1989	ev_invoke_pending (EV_P)
1445	{	1990	{
1446	int pri;	1991	int pri;
1447		1992
1448	for (pri = NUMPRI; pri--; )	1993	for (pri = NUMPRI; pri--; )
1449	while (pendingcnt [pri])	1994	while (pendingcnt [pri])
1450	{	1995	{
1451	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1996	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1452		1997
1453	if (expect_true (p->w))
1454	{
1455	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1998	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1999	/* ^ this is no longer true, as pending_w could be here */
1456		2000
1457	p->w->pending = 0;	2001	p->w->pending = 0;
1458	EV_CB_INVOKE (p->w, p->events);	2002	EV_CB_INVOKE (p->w, p->events);
1459	}	2003	EV_FREQUENT_CHECK;
1460	}	2004	}
1461	}	2005	}
1462		2006
1463	void inline_size
1464	timers_reify (EV_P)
1465	{
1466	while (timercnt && ev_at (timers [1]) <= mn_now)
1467	{
1468	ev_timer *w = (ev_timer *)timers [1];
1469
1470	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1471
1472	/* first reschedule or stop timer */
1473	if (w->repeat)
1474	{
1475	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1476
1477	ev_at (w) += w->repeat;
1478	if (ev_at (w) < mn_now)
1479	ev_at (w) = mn_now;
1480
1481	downheap (timers, timercnt, 1);
1482	}
1483	else
1484	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1485
1486	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1487	}
1488	}
1489
1490	#if EV_PERIODIC_ENABLE
1491	void inline_size
1492	periodics_reify (EV_P)
1493	{
1494	while (periodiccnt && ev_at (periodics [1]) <= ev_rt_now)
1495	{
1496	ev_periodic *w = (ev_periodic *)periodics [1];
1497
1498	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1499
1500	/* first reschedule or stop timer */
1501	if (w->reschedule_cb)
1502	{
1503	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1504	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
1505	downheap (periodics, periodiccnt, 1);
1506	}
1507	else if (w->interval)
1508	{
1509	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1510	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1511	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1512	downheap (periodics, periodiccnt, 1);
1513	}
1514	else
1515	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1516
1517	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1518	}
1519	}
1520
1521	static void noinline
1522	periodics_reschedule (EV_P)
1523	{
1524	int i;
1525
1526	/* adjust periodics after time jump */
1527	for (i = 0; i < periodiccnt; ++i)
1528	{
1529	ev_periodic *w = (ev_periodic *)periodics [i];
1530
1531	if (w->reschedule_cb)
1532	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1533	else if (w->interval)
1534	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1535	}
1536
1537	/* now rebuild the heap */
1538	for (i = periodiccnt >> 1; i--; )
1539	downheap (periodics, periodiccnt, i);
1540	}
1541	#endif
1542
1543	#if EV_IDLE_ENABLE	2007	#if EV_IDLE_ENABLE
1544	void inline_size	2008	/* make idle watchers pending. this handles the "call-idle */
		2009	/* only when higher priorities are idle" logic */
		2010	inline_size void
1545	idle_reify (EV_P)	2011	idle_reify (EV_P)
1546	{	2012	{
1547	if (expect_false (idleall))	2013	if (expect_false (idleall))
1548	{	2014	{
1549	int pri;	2015	int pri;
…		…
1561	}	2027	}
1562	}	2028	}
1563	}	2029	}
1564	#endif	2030	#endif
1565		2031
1566	void inline_speed	2032	/* make timers pending */
		2033	inline_size void
		2034	timers_reify (EV_P)
		2035	{
		2036	EV_FREQUENT_CHECK;
		2037
		2038	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		2039	{
		2040	do
		2041	{
		2042	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2043
		2044	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2045
		2046	/* first reschedule or stop timer */
		2047	if (w->repeat)
		2048	{
		2049	ev_at (w) += w->repeat;
		2050	if (ev_at (w) < mn_now)
		2051	ev_at (w) = mn_now;
		2052
		2053	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		2054
		2055	ANHE_at_cache (timers [HEAP0]);
		2056	downheap (timers, timercnt, HEAP0);
		2057	}
		2058	else
		2059	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2060
		2061	EV_FREQUENT_CHECK;
		2062	feed_reverse (EV_A_ (W)w);
		2063	}
		2064	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
		2065
		2066	feed_reverse_done (EV_A_ EV_TIMEOUT);
		2067	}
		2068	}
		2069
		2070	#if EV_PERIODIC_ENABLE
		2071	/* make periodics pending */
		2072	inline_size void
		2073	periodics_reify (EV_P)
		2074	{
		2075	EV_FREQUENT_CHECK;
		2076
		2077	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		2078	{
		2079	int feed_count = 0;
		2080
		2081	do
		2082	{
		2083	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2084
		2085	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2086
		2087	/* first reschedule or stop timer */
		2088	if (w->reschedule_cb)
		2089	{
		2090	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2091
		2092	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		2093
		2094	ANHE_at_cache (periodics [HEAP0]);
		2095	downheap (periodics, periodiccnt, HEAP0);
		2096	}
		2097	else if (w->interval)
		2098	{
		2099	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2100	/* if next trigger time is not sufficiently in the future, put it there */
		2101	/* this might happen because of floating point inexactness */
		2102	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2103	{
		2104	ev_at (w) += w->interval;
		2105
		2106	/* if interval is unreasonably low we might still have a time in the past */
		2107	/* so correct this. this will make the periodic very inexact, but the user */
		2108	/* has effectively asked to get triggered more often than possible */
		2109	if (ev_at (w) < ev_rt_now)
		2110	ev_at (w) = ev_rt_now;
		2111	}
		2112
		2113	ANHE_at_cache (periodics [HEAP0]);
		2114	downheap (periodics, periodiccnt, HEAP0);
		2115	}
		2116	else
		2117	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2118
		2119	EV_FREQUENT_CHECK;
		2120	feed_reverse (EV_A_ (W)w);
		2121	}
		2122	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
		2123
		2124	feed_reverse_done (EV_A_ EV_PERIODIC);
		2125	}
		2126	}
		2127
		2128	/* simply recalculate all periodics */
		2129	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
		2130	static void noinline
		2131	periodics_reschedule (EV_P)
		2132	{
		2133	int i;
		2134
		2135	/* adjust periodics after time jump */
		2136	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		2137	{
		2138	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		2139
		2140	if (w->reschedule_cb)
		2141	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2142	else if (w->interval)
		2143	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2144
		2145	ANHE_at_cache (periodics [i]);
		2146	}
		2147
		2148	reheap (periodics, periodiccnt);
		2149	}
		2150	#endif
		2151
		2152	/* adjust all timers by a given offset */
		2153	static void noinline
		2154	timers_reschedule (EV_P_ ev_tstamp adjust)
		2155	{
		2156	int i;
		2157
		2158	for (i = 0; i < timercnt; ++i)
		2159	{
		2160	ANHE *he = timers + i + HEAP0;
		2161	ANHE_w (*he)->at += adjust;
		2162	ANHE_at_cache (*he);
		2163	}
		2164	}
		2165
		2166	/* fetch new monotonic and realtime times from the kernel */
		2167	/* also detetc if there was a timejump, and act accordingly */
		2168	inline_speed void
1567	time_update (EV_P_ ev_tstamp max_block)	2169	time_update (EV_P_ ev_tstamp max_block)
1568	{	2170	{
1569	int i;
1570
1571	#if EV_USE_MONOTONIC	2171	#if EV_USE_MONOTONIC
1572	if (expect_true (have_monotonic))	2172	if (expect_true (have_monotonic))
1573	{	2173	{
		2174	int i;
1574	ev_tstamp odiff = rtmn_diff;	2175	ev_tstamp odiff = rtmn_diff;
1575		2176
1576	mn_now = get_clock ();	2177	mn_now = get_clock ();
1577		2178
1578	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2179	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1596	*/	2197	*/
1597	for (i = 4; --i; )	2198	for (i = 4; --i; )
1598	{	2199	{
1599	rtmn_diff = ev_rt_now - mn_now;	2200	rtmn_diff = ev_rt_now - mn_now;
1600		2201
1601	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	2202	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1602	return; /* all is well */	2203	return; /* all is well */
1603		2204
1604	ev_rt_now = ev_time ();	2205	ev_rt_now = ev_time ();
1605	mn_now = get_clock ();	2206	mn_now = get_clock ();
1606	now_floor = mn_now;	2207	now_floor = mn_now;
1607	}	2208	}
1608		2209
		2210	/* no timer adjustment, as the monotonic clock doesn't jump */
		2211	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1609	# if EV_PERIODIC_ENABLE	2212	# if EV_PERIODIC_ENABLE
1610	periodics_reschedule (EV_A);	2213	periodics_reschedule (EV_A);
1611	# endif	2214	# endif
1612	/* no timer adjustment, as the monotonic clock doesn't jump */
1613	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1614	}	2215	}
1615	else	2216	else
1616	#endif	2217	#endif
1617	{	2218	{
1618	ev_rt_now = ev_time ();	2219	ev_rt_now = ev_time ();
1619		2220
1620	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2221	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1621	{	2222	{
		2223	/* adjust timers. this is easy, as the offset is the same for all of them */
		2224	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1622	#if EV_PERIODIC_ENABLE	2225	#if EV_PERIODIC_ENABLE
1623	periodics_reschedule (EV_A);	2226	periodics_reschedule (EV_A);
1624	#endif	2227	#endif
1625	/* adjust timers. this is easy, as the offset is the same for all of them */
1626	for (i = 1; i <= timercnt; ++i)
1627	ev_at (timers [i]) += ev_rt_now - mn_now;
1628	}	2228	}
1629		2229
1630	mn_now = ev_rt_now;	2230	mn_now = ev_rt_now;
1631	}	2231	}
1632	}	2232	}
1633		2233
1634	void	2234	void
1635	ev_ref (EV_P)
1636	{
1637	++activecnt;
1638	}
1639
1640	void
1641	ev_unref (EV_P)
1642	{
1643	--activecnt;
1644	}
1645
1646	static int loop_done;
1647
1648	void
1649	ev_loop (EV_P_ int flags)	2235	ev_loop (EV_P_ int flags)
1650	{	2236	{
		2237	#if EV_MINIMAL < 2
		2238	++loop_depth;
		2239	#endif
		2240
		2241	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2242
1651	loop_done = EVUNLOOP_CANCEL;	2243	loop_done = EVUNLOOP_CANCEL;
1652		2244
1653	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2245	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1654		2246
1655	do	2247	do
1656	{	2248	{
		2249	#if EV_VERIFY >= 2
		2250	ev_loop_verify (EV_A);
		2251	#endif
		2252
1657	#ifndef _WIN32	2253	#ifndef _WIN32
1658	if (expect_false (curpid)) /* penalise the forking check even more */	2254	if (expect_false (curpid)) /* penalise the forking check even more */
1659	if (expect_false (getpid () != curpid))	2255	if (expect_false (getpid () != curpid))
1660	{	2256	{
1661	curpid = getpid ();	2257	curpid = getpid ();
…		…
1667	/* we might have forked, so queue fork handlers */	2263	/* we might have forked, so queue fork handlers */
1668	if (expect_false (postfork))	2264	if (expect_false (postfork))
1669	if (forkcnt)	2265	if (forkcnt)
1670	{	2266	{
1671	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2267	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1672	call_pending (EV_A);	2268	EV_INVOKE_PENDING;
1673	}	2269	}
1674	#endif	2270	#endif
1675		2271
1676	/* queue prepare watchers (and execute them) */	2272	/* queue prepare watchers (and execute them) */
1677	if (expect_false (preparecnt))	2273	if (expect_false (preparecnt))
1678	{	2274	{
1679	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2275	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1680	call_pending (EV_A);	2276	EV_INVOKE_PENDING;
1681	}	2277	}
1682		2278
1683	if (expect_false (!activecnt))	2279	if (expect_false (loop_done))
1684	break;	2280	break;
1685		2281
1686	/* we might have forked, so reify kernel state if necessary */	2282	/* we might have forked, so reify kernel state if necessary */
1687	if (expect_false (postfork))	2283	if (expect_false (postfork))
1688	loop_fork (EV_A);	2284	loop_fork (EV_A);
…		…
1695	ev_tstamp waittime = 0.;	2291	ev_tstamp waittime = 0.;
1696	ev_tstamp sleeptime = 0.;	2292	ev_tstamp sleeptime = 0.;
1697		2293
1698	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2294	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1699	{	2295	{
		2296	/* remember old timestamp for io_blocktime calculation */
		2297	ev_tstamp prev_mn_now = mn_now;
		2298
1700	/* update time to cancel out callback processing overhead */	2299	/* update time to cancel out callback processing overhead */
1701	time_update (EV_A_ 1e100);	2300	time_update (EV_A_ 1e100);
1702		2301
1703	waittime = MAX_BLOCKTIME;	2302	waittime = MAX_BLOCKTIME;
1704		2303
1705	if (timercnt)	2304	if (timercnt)
1706	{	2305	{
1707	ev_tstamp to = ev_at (timers [1]) - mn_now + backend_fudge;	2306	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1708	if (waittime > to) waittime = to;	2307	if (waittime > to) waittime = to;
1709	}	2308	}
1710		2309
1711	#if EV_PERIODIC_ENABLE	2310	#if EV_PERIODIC_ENABLE
1712	if (periodiccnt)	2311	if (periodiccnt)
1713	{	2312	{
1714	ev_tstamp to = ev_at (periodics [1]) - ev_rt_now + backend_fudge;	2313	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1715	if (waittime > to) waittime = to;	2314	if (waittime > to) waittime = to;
1716	}	2315	}
1717	#endif	2316	#endif
1718		2317
		2318	/* don't let timeouts decrease the waittime below timeout_blocktime */
1719	if (expect_false (waittime < timeout_blocktime))	2319	if (expect_false (waittime < timeout_blocktime))
1720	waittime = timeout_blocktime;	2320	waittime = timeout_blocktime;
1721		2321
1722	sleeptime = waittime - backend_fudge;	2322	/* extra check because io_blocktime is commonly 0 */
1723
1724	if (expect_true (sleeptime > io_blocktime))	2323	if (expect_false (io_blocktime))
1725	sleeptime = io_blocktime;
1726
1727	if (sleeptime)
1728	{	2324	{
		2325	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2326
		2327	if (sleeptime > waittime - backend_fudge)
		2328	sleeptime = waittime - backend_fudge;
		2329
		2330	if (expect_true (sleeptime > 0.))
		2331	{
1729	ev_sleep (sleeptime);	2332	ev_sleep (sleeptime);
1730	waittime -= sleeptime;	2333	waittime -= sleeptime;
		2334	}
1731	}	2335	}
1732	}	2336	}
1733		2337
		2338	#if EV_MINIMAL < 2
1734	++loop_count;	2339	++loop_count;
		2340	#endif
		2341	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1735	backend_poll (EV_A_ waittime);	2342	backend_poll (EV_A_ waittime);
		2343	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1736		2344
1737	/* update ev_rt_now, do magic */	2345	/* update ev_rt_now, do magic */
1738	time_update (EV_A_ waittime + sleeptime);	2346	time_update (EV_A_ waittime + sleeptime);
1739	}	2347	}
1740		2348
…		…
1751		2359
1752	/* queue check watchers, to be executed first */	2360	/* queue check watchers, to be executed first */
1753	if (expect_false (checkcnt))	2361	if (expect_false (checkcnt))
1754	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2362	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1755		2363
1756	call_pending (EV_A);	2364	EV_INVOKE_PENDING;
1757	}	2365	}
1758	while (expect_true (	2366	while (expect_true (
1759	activecnt	2367	activecnt
1760	&& !loop_done	2368	&& !loop_done
1761	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2369	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1762	));	2370	));
1763		2371
1764	if (loop_done == EVUNLOOP_ONE)	2372	if (loop_done == EVUNLOOP_ONE)
1765	loop_done = EVUNLOOP_CANCEL;	2373	loop_done = EVUNLOOP_CANCEL;
		2374
		2375	#if EV_MINIMAL < 2
		2376	--loop_depth;
		2377	#endif
1766	}	2378	}
1767		2379
1768	void	2380	void
1769	ev_unloop (EV_P_ int how)	2381	ev_unloop (EV_P_ int how)
1770	{	2382	{
1771	loop_done = how;	2383	loop_done = how;
1772	}	2384	}
1773		2385
		2386	void
		2387	ev_ref (EV_P)
		2388	{
		2389	++activecnt;
		2390	}
		2391
		2392	void
		2393	ev_unref (EV_P)
		2394	{
		2395	--activecnt;
		2396	}
		2397
		2398	void
		2399	ev_now_update (EV_P)
		2400	{
		2401	time_update (EV_A_ 1e100);
		2402	}
		2403
		2404	void
		2405	ev_suspend (EV_P)
		2406	{
		2407	ev_now_update (EV_A);
		2408	}
		2409
		2410	void
		2411	ev_resume (EV_P)
		2412	{
		2413	ev_tstamp mn_prev = mn_now;
		2414
		2415	ev_now_update (EV_A);
		2416	timers_reschedule (EV_A_ mn_now - mn_prev);
		2417	#if EV_PERIODIC_ENABLE
		2418	/* TODO: really do this? */
		2419	periodics_reschedule (EV_A);
		2420	#endif
		2421	}
		2422
1774	/*****************************************************************************/	2423	/*****************************************************************************/
		2424	/* singly-linked list management, used when the expected list length is short */
1775		2425
1776	void inline_size	2426	inline_size void
1777	wlist_add (WL *head, WL elem)	2427	wlist_add (WL *head, WL elem)
1778	{	2428	{
1779	elem->next = *head;	2429	elem->next = *head;
1780	*head = elem;	2430	*head = elem;
1781	}	2431	}
1782		2432
1783	void inline_size	2433	inline_size void
1784	wlist_del (WL *head, WL elem)	2434	wlist_del (WL *head, WL elem)
1785	{	2435	{
1786	while (*head)	2436	while (*head)
1787	{	2437	{
1788	if (*head == elem)	2438	if (expect_true (*head == elem))
1789	{	2439	{
1790	*head = elem->next;	2440	*head = elem->next;
1791	return;	2441	break;
1792	}	2442	}
1793		2443
1794	head = &(*head)->next;	2444	head = &(*head)->next;
1795	}	2445	}
1796	}	2446	}
1797		2447
1798	void inline_speed	2448	/* internal, faster, version of ev_clear_pending */
		2449	inline_speed void
1799	clear_pending (EV_P_ W w)	2450	clear_pending (EV_P_ W w)
1800	{	2451	{
1801	if (w->pending)	2452	if (w->pending)
1802	{	2453	{
1803	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2454	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1804	w->pending = 0;	2455	w->pending = 0;
1805	}	2456	}
1806	}	2457	}
1807		2458
1808	int	2459	int
…		…
1812	int pending = w_->pending;	2463	int pending = w_->pending;
1813		2464
1814	if (expect_true (pending))	2465	if (expect_true (pending))
1815	{	2466	{
1816	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2467	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2468	p->w = (W)&pending_w;
1817	w_->pending = 0;	2469	w_->pending = 0;
1818	p->w = 0;
1819	return p->events;	2470	return p->events;
1820	}	2471	}
1821	else	2472	else
1822	return 0;	2473	return 0;
1823	}	2474	}
1824		2475
1825	void inline_size	2476	inline_size void
1826	pri_adjust (EV_P_ W w)	2477	pri_adjust (EV_P_ W w)
1827	{	2478	{
1828	int pri = w->priority;	2479	int pri = ev_priority (w);
1829	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2480	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1830	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2481	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1831	w->priority = pri;	2482	ev_set_priority (w, pri);
1832	}	2483	}
1833		2484
1834	void inline_speed	2485	inline_speed void
1835	ev_start (EV_P_ W w, int active)	2486	ev_start (EV_P_ W w, int active)
1836	{	2487	{
1837	pri_adjust (EV_A_ w);	2488	pri_adjust (EV_A_ w);
1838	w->active = active;	2489	w->active = active;
1839	ev_ref (EV_A);	2490	ev_ref (EV_A);
1840	}	2491	}
1841		2492
1842	void inline_size	2493	inline_size void
1843	ev_stop (EV_P_ W w)	2494	ev_stop (EV_P_ W w)
1844	{	2495	{
1845	ev_unref (EV_A);	2496	ev_unref (EV_A);
1846	w->active = 0;	2497	w->active = 0;
1847	}	2498	}
…		…
1854	int fd = w->fd;	2505	int fd = w->fd;
1855		2506
1856	if (expect_false (ev_is_active (w)))	2507	if (expect_false (ev_is_active (w)))
1857	return;	2508	return;
1858		2509
1859	assert (("ev_io_start called with negative fd", fd >= 0));	2510	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2511	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2512
		2513	EV_FREQUENT_CHECK;
1860		2514
1861	ev_start (EV_A_ (W)w, 1);	2515	ev_start (EV_A_ (W)w, 1);
1862	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2516	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1863	wlist_add (&anfds[fd].head, (WL)w);	2517	wlist_add (&anfds[fd].head, (WL)w);
1864		2518
1865	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2519	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1866	w->events &= ~EV_IOFDSET;	2520	w->events &= ~EV__IOFDSET;
		2521
		2522	EV_FREQUENT_CHECK;
1867	}	2523	}
1868		2524
1869	void noinline	2525	void noinline
1870	ev_io_stop (EV_P_ ev_io *w)	2526	ev_io_stop (EV_P_ ev_io *w)
1871	{	2527	{
1872	clear_pending (EV_A_ (W)w);	2528	clear_pending (EV_A_ (W)w);
1873	if (expect_false (!ev_is_active (w)))	2529	if (expect_false (!ev_is_active (w)))
1874	return;	2530	return;
1875		2531
1876	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2532	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2533
		2534	EV_FREQUENT_CHECK;
1877		2535
1878	wlist_del (&anfds[w->fd].head, (WL)w);	2536	wlist_del (&anfds[w->fd].head, (WL)w);
1879	ev_stop (EV_A_ (W)w);	2537	ev_stop (EV_A_ (W)w);
1880		2538
1881	fd_change (EV_A_ w->fd, 1);	2539	fd_change (EV_A_ w->fd, 1);
		2540
		2541	EV_FREQUENT_CHECK;
1882	}	2542	}
1883		2543
1884	void noinline	2544	void noinline
1885	ev_timer_start (EV_P_ ev_timer *w)	2545	ev_timer_start (EV_P_ ev_timer *w)
1886	{	2546	{
1887	if (expect_false (ev_is_active (w)))	2547	if (expect_false (ev_is_active (w)))
1888	return;	2548	return;
1889		2549
1890	ev_at (w) += mn_now;	2550	ev_at (w) += mn_now;
1891		2551
1892	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2552	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1893		2553
		2554	EV_FREQUENT_CHECK;
		2555
		2556	++timercnt;
1894	ev_start (EV_A_ (W)w, ++timercnt);	2557	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1895	array_needsize (WT, timers, timermax, timercnt + 1, EMPTY2);	2558	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1896	timers [timercnt] = (WT)w;	2559	ANHE_w (timers [ev_active (w)]) = (WT)w;
		2560	ANHE_at_cache (timers [ev_active (w)]);
1897	upheap (timers, timercnt);	2561	upheap (timers, ev_active (w));
1898		2562
		2563	EV_FREQUENT_CHECK;
		2564
1899	/*assert (("internal timer heap corruption", timers [((W)w)->active] == w));*/	2565	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1900	}	2566	}
1901		2567
1902	void noinline	2568	void noinline
1903	ev_timer_stop (EV_P_ ev_timer *w)	2569	ev_timer_stop (EV_P_ ev_timer *w)
1904	{	2570	{
1905	clear_pending (EV_A_ (W)w);	2571	clear_pending (EV_A_ (W)w);
1906	if (expect_false (!ev_is_active (w)))	2572	if (expect_false (!ev_is_active (w)))
1907	return;	2573	return;
1908		2574
1909	assert (("internal timer heap corruption", timers [((W)w)->active] == (WT)w));	2575	EV_FREQUENT_CHECK;
1910		2576
1911	{	2577	{
1912	int active = ((W)w)->active;	2578	int active = ev_active (w);
1913		2579
		2580	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2581
		2582	--timercnt;
		2583
1914	if (expect_true (active < timercnt))	2584	if (expect_true (active < timercnt + HEAP0))
1915	{	2585	{
1916	timers [active] = timers [timercnt];	2586	timers [active] = timers [timercnt + HEAP0];
1917	adjustheap (timers, timercnt, active);	2587	adjustheap (timers, timercnt, active);
1918	}	2588	}
1919
1920	--timercnt;
1921	}	2589	}
		2590
		2591	EV_FREQUENT_CHECK;
1922		2592
1923	ev_at (w) -= mn_now;	2593	ev_at (w) -= mn_now;
1924		2594
1925	ev_stop (EV_A_ (W)w);	2595	ev_stop (EV_A_ (W)w);
1926	}	2596	}
1927		2597
1928	void noinline	2598	void noinline
1929	ev_timer_again (EV_P_ ev_timer *w)	2599	ev_timer_again (EV_P_ ev_timer *w)
1930	{	2600	{
		2601	EV_FREQUENT_CHECK;
		2602
1931	if (ev_is_active (w))	2603	if (ev_is_active (w))
1932	{	2604	{
1933	if (w->repeat)	2605	if (w->repeat)
1934	{	2606	{
1935	ev_at (w) = mn_now + w->repeat;	2607	ev_at (w) = mn_now + w->repeat;
		2608	ANHE_at_cache (timers [ev_active (w)]);
1936	adjustheap (timers, timercnt, ((W)w)->active);	2609	adjustheap (timers, timercnt, ev_active (w));
1937	}	2610	}
1938	else	2611	else
1939	ev_timer_stop (EV_A_ w);	2612	ev_timer_stop (EV_A_ w);
1940	}	2613	}
1941	else if (w->repeat)	2614	else if (w->repeat)
1942	{	2615	{
1943	w->at = w->repeat;	2616	ev_at (w) = w->repeat;
1944	ev_timer_start (EV_A_ w);	2617	ev_timer_start (EV_A_ w);
1945	}	2618	}
		2619
		2620	EV_FREQUENT_CHECK;
		2621	}
		2622
		2623	ev_tstamp
		2624	ev_timer_remaining (EV_P_ ev_timer *w)
		2625	{
		2626	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1946	}	2627	}
1947		2628
1948	#if EV_PERIODIC_ENABLE	2629	#if EV_PERIODIC_ENABLE
1949	void noinline	2630	void noinline
1950	ev_periodic_start (EV_P_ ev_periodic *w)	2631	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
1954		2635
1955	if (w->reschedule_cb)	2636	if (w->reschedule_cb)
1956	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2637	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1957	else if (w->interval)	2638	else if (w->interval)
1958	{	2639	{
1959	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2640	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1960	/* this formula differs from the one in periodic_reify because we do not always round up */	2641	/* this formula differs from the one in periodic_reify because we do not always round up */
1961	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2642	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1962	}	2643	}
1963	else	2644	else
1964	ev_at (w) = w->offset;	2645	ev_at (w) = w->offset;
1965		2646
		2647	EV_FREQUENT_CHECK;
		2648
		2649	++periodiccnt;
1966	ev_start (EV_A_ (W)w, ++periodiccnt);	2650	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1967	array_needsize (WT, periodics, periodicmax, periodiccnt + 1, EMPTY2);	2651	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1968	periodics [periodiccnt] = (WT)w;	2652	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1969	upheap (periodics, periodiccnt);	2653	ANHE_at_cache (periodics [ev_active (w)]);
		2654	upheap (periodics, ev_active (w));
1970		2655
		2656	EV_FREQUENT_CHECK;
		2657
1971	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2658	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1972	}	2659	}
1973		2660
1974	void noinline	2661	void noinline
1975	ev_periodic_stop (EV_P_ ev_periodic *w)	2662	ev_periodic_stop (EV_P_ ev_periodic *w)
1976	{	2663	{
1977	clear_pending (EV_A_ (W)w);	2664	clear_pending (EV_A_ (W)w);
1978	if (expect_false (!ev_is_active (w)))	2665	if (expect_false (!ev_is_active (w)))
1979	return;	2666	return;
1980		2667
1981	assert (("internal periodic heap corruption", periodics [((W)w)->active] == (WT)w));	2668	EV_FREQUENT_CHECK;
1982		2669
1983	{	2670	{
1984	int active = ((W)w)->active;	2671	int active = ev_active (w);
1985		2672
		2673	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2674
		2675	--periodiccnt;
		2676
1986	if (expect_true (active < periodiccnt))	2677	if (expect_true (active < periodiccnt + HEAP0))
1987	{	2678	{
1988	periodics [active] = periodics [periodiccnt];	2679	periodics [active] = periodics [periodiccnt + HEAP0];
1989	adjustheap (periodics, periodiccnt, active);	2680	adjustheap (periodics, periodiccnt, active);
1990	}	2681	}
1991
1992	--periodiccnt;
1993	}	2682	}
		2683
		2684	EV_FREQUENT_CHECK;
1994		2685
1995	ev_stop (EV_A_ (W)w);	2686	ev_stop (EV_A_ (W)w);
1996	}	2687	}
1997		2688
1998	void noinline	2689	void noinline
…		…
2009	#endif	2700	#endif
2010		2701
2011	void noinline	2702	void noinline
2012	ev_signal_start (EV_P_ ev_signal *w)	2703	ev_signal_start (EV_P_ ev_signal *w)
2013	{	2704	{
2014	#if EV_MULTIPLICITY
2015	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2016	#endif
2017	if (expect_false (ev_is_active (w)))	2705	if (expect_false (ev_is_active (w)))
2018	return;	2706	return;
2019		2707
2020	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2708	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2021		2709
2022	evpipe_init (EV_A);	2710	#if EV_MULTIPLICITY
		2711	assert (("libev: a signal must not be attached to two different loops",
		2712	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2023		2713
		2714	signals [w->signum - 1].loop = EV_A;
		2715	#endif
		2716
		2717	EV_FREQUENT_CHECK;
		2718
		2719	#if EV_USE_SIGNALFD
		2720	if (sigfd == -2)
2024	{	2721	{
2025	#ifndef _WIN32	2722	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2026	sigset_t full, prev;	2723	if (sigfd < 0 && errno == EINVAL)
2027	sigfillset (&full);	2724	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2028	sigprocmask (SIG_SETMASK, &full, &prev);
2029	#endif
2030		2725
2031	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2726	if (sigfd >= 0)
		2727	{
		2728	fd_intern (sigfd); /* doing it twice will not hurt */
2032		2729
2033	#ifndef _WIN32	2730	sigemptyset (&sigfd_set);
2034	sigprocmask (SIG_SETMASK, &prev, 0);	2731
2035	#endif	2732	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2733	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2734	ev_io_start (EV_A_ &sigfd_w);
		2735	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2736	}
2036	}	2737	}
		2738
		2739	if (sigfd >= 0)
		2740	{
		2741	/* TODO: check .head */
		2742	sigaddset (&sigfd_set, w->signum);
		2743	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2744
		2745	signalfd (sigfd, &sigfd_set, 0);
		2746	}
		2747	#endif
2037		2748
2038	ev_start (EV_A_ (W)w, 1);	2749	ev_start (EV_A_ (W)w, 1);
2039	wlist_add (&signals [w->signum - 1].head, (WL)w);	2750	wlist_add (&signals [w->signum - 1].head, (WL)w);
2040		2751
2041	if (!((WL)w)->next)	2752	if (!((WL)w)->next)
		2753	# if EV_USE_SIGNALFD
		2754	if (sigfd < 0) /*TODO*/
		2755	# endif
2042	{	2756	{
2043	#if _WIN32	2757	# if _WIN32
2044	signal (w->signum, ev_sighandler);	2758	signal (w->signum, ev_sighandler);
2045	#else	2759	# else
2046	struct sigaction sa;	2760	struct sigaction sa;
		2761
		2762	evpipe_init (EV_A);
		2763
2047	sa.sa_handler = ev_sighandler;	2764	sa.sa_handler = ev_sighandler;
2048	sigfillset (&sa.sa_mask);	2765	sigfillset (&sa.sa_mask);
2049	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2766	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2050	sigaction (w->signum, &sa, 0);	2767	sigaction (w->signum, &sa, 0);
		2768
		2769	sigemptyset (&sa.sa_mask);
		2770	sigaddset (&sa.sa_mask, w->signum);
		2771	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2051	#endif	2772	#endif
2052	}	2773	}
		2774
		2775	EV_FREQUENT_CHECK;
2053	}	2776	}
2054		2777
2055	void noinline	2778	void noinline
2056	ev_signal_stop (EV_P_ ev_signal *w)	2779	ev_signal_stop (EV_P_ ev_signal *w)
2057	{	2780	{
2058	clear_pending (EV_A_ (W)w);	2781	clear_pending (EV_A_ (W)w);
2059	if (expect_false (!ev_is_active (w)))	2782	if (expect_false (!ev_is_active (w)))
2060	return;	2783	return;
2061		2784
		2785	EV_FREQUENT_CHECK;
		2786
2062	wlist_del (&signals [w->signum - 1].head, (WL)w);	2787	wlist_del (&signals [w->signum - 1].head, (WL)w);
2063	ev_stop (EV_A_ (W)w);	2788	ev_stop (EV_A_ (W)w);
2064		2789
2065	if (!signals [w->signum - 1].head)	2790	if (!signals [w->signum - 1].head)
		2791	{
		2792	#if EV_MULTIPLICITY
		2793	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2794	#endif
		2795	#if EV_USE_SIGNALFD
		2796	if (sigfd >= 0)
		2797	{
		2798	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2799	sigdelset (&sigfd_set, w->signum);
		2800	signalfd (sigfd, &sigfd_set, 0);
		2801	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2802	/*TODO: maybe unblock signal? */
		2803	}
		2804	else
		2805	#endif
2066	signal (w->signum, SIG_DFL);	2806	signal (w->signum, SIG_DFL);
		2807	}
		2808
		2809	EV_FREQUENT_CHECK;
2067	}	2810	}
2068		2811
2069	void	2812	void
2070	ev_child_start (EV_P_ ev_child *w)	2813	ev_child_start (EV_P_ ev_child *w)
2071	{	2814	{
2072	#if EV_MULTIPLICITY	2815	#if EV_MULTIPLICITY
2073	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2816	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2074	#endif	2817	#endif
2075	if (expect_false (ev_is_active (w)))	2818	if (expect_false (ev_is_active (w)))
2076	return;	2819	return;
2077		2820
		2821	EV_FREQUENT_CHECK;
		2822
2078	ev_start (EV_A_ (W)w, 1);	2823	ev_start (EV_A_ (W)w, 1);
2079	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2824	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2825
		2826	EV_FREQUENT_CHECK;
2080	}	2827	}
2081		2828
2082	void	2829	void
2083	ev_child_stop (EV_P_ ev_child *w)	2830	ev_child_stop (EV_P_ ev_child *w)
2084	{	2831	{
2085	clear_pending (EV_A_ (W)w);	2832	clear_pending (EV_A_ (W)w);
2086	if (expect_false (!ev_is_active (w)))	2833	if (expect_false (!ev_is_active (w)))
2087	return;	2834	return;
2088		2835
		2836	EV_FREQUENT_CHECK;
		2837
2089	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2838	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2090	ev_stop (EV_A_ (W)w);	2839	ev_stop (EV_A_ (W)w);
		2840
		2841	EV_FREQUENT_CHECK;
2091	}	2842	}
2092		2843
2093	#if EV_STAT_ENABLE	2844	#if EV_STAT_ENABLE
2094		2845
2095	# ifdef _WIN32	2846	# ifdef _WIN32
2096	# undef lstat	2847	# undef lstat
2097	# define lstat(a,b) _stati64 (a,b)	2848	# define lstat(a,b) _stati64 (a,b)
2098	# endif	2849	# endif
2099		2850
2100	#define DEF_STAT_INTERVAL 5.0074891	2851	#define DEF_STAT_INTERVAL 5.0074891
		2852	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2101	#define MIN_STAT_INTERVAL 0.1074891	2853	#define MIN_STAT_INTERVAL 0.1074891
2102		2854
2103	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2855	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2104		2856
2105	#if EV_USE_INOTIFY	2857	#if EV_USE_INOTIFY
2106	# define EV_INOTIFY_BUFSIZE 8192	2858	# define EV_INOTIFY_BUFSIZE 8192
…		…
2110	{	2862	{
2111	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);	2863	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);
2112		2864
2113	if (w->wd < 0)	2865	if (w->wd < 0)
2114	{	2866	{
		2867	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2115	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2868	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2116		2869
2117	/* monitor some parent directory for speedup hints */	2870	/* monitor some parent directory for speedup hints */
		2871	/* note that exceeding the hardcoded path limit is not a correctness issue, */
		2872	/* but an efficiency issue only */
2118	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2873	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2119	{	2874	{
2120	char path [4096];	2875	char path [4096];
2121	strcpy (path, w->path);	2876	strcpy (path, w->path);
2122		2877
…		…
2125	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2880	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2126	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2881	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2127		2882
2128	char *pend = strrchr (path, '/');	2883	char *pend = strrchr (path, '/');
2129		2884
2130	if (!pend)	2885	if (!pend || pend == path)
2131	break; /* whoops, no '/', complain to your admin */	2886	break;
2132		2887
2133	*pend = 0;	2888	*pend = 0;
2134	w->wd = inotify_add_watch (fs_fd, path, mask);	2889	w->wd = inotify_add_watch (fs_fd, path, mask);
2135	}	2890	}
2136	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2891	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2137	}	2892	}
2138	}	2893	}
2139	else
2140	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2141		2894
2142	if (w->wd >= 0)	2895	if (w->wd >= 0)
		2896	{
		2897	struct statfs sfs;
		2898
2143	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2899	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2900
		2901	/* now local changes will be tracked by inotify, but remote changes won't */
		2902	/* unless the filesystem it known to be local, we therefore still poll */
		2903	/* also do poll on <2.6.25, but with normal frequency */
		2904
		2905	if (fs_2625 && !statfs (w->path, &sfs))
		2906	if (sfs.f_type == 0x1373 /* devfs */
		2907	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2908	|| sfs.f_type == 0x3153464a /* jfs */
		2909	|| sfs.f_type == 0x52654973 /* reiser3 */
		2910	|| sfs.f_type == 0x01021994 /* tempfs */
		2911	|| sfs.f_type == 0x58465342 /* xfs */)
		2912	return;
		2913
		2914	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2915	ev_timer_again (EV_A_ &w->timer);
		2916	}
2144	}	2917	}
2145		2918
2146	static void noinline	2919	static void noinline
2147	infy_del (EV_P_ ev_stat *w)	2920	infy_del (EV_P_ ev_stat *w)
2148	{	2921	{
…		…
2162		2935
2163	static void noinline	2936	static void noinline
2164	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2937	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2165	{	2938	{
2166	if (slot < 0)	2939	if (slot < 0)
2167	/* overflow, need to check for all hahs slots */	2940	/* overflow, need to check for all hash slots */
2168	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2941	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2169	infy_wd (EV_A_ slot, wd, ev);	2942	infy_wd (EV_A_ slot, wd, ev);
2170	else	2943	else
2171	{	2944	{
2172	WL w_;	2945	WL w_;
…		…
2178		2951
2179	if (w->wd == wd || wd == -1)	2952	if (w->wd == wd || wd == -1)
2180	{	2953	{
2181	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2954	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2182	{	2955	{
		2956	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2183	w->wd = -1;	2957	w->wd = -1;
2184	infy_add (EV_A_ w); /* re-add, no matter what */	2958	infy_add (EV_A_ w); /* re-add, no matter what */
2185	}	2959	}
2186		2960
2187	stat_timer_cb (EV_A_ &w->timer, 0);	2961	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2200		2974
2201	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2975	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2202	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2976	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2203	}	2977	}
2204		2978
2205	void inline_size	2979	inline_size void
		2980	check_2625 (EV_P)
		2981	{
		2982	/* kernels < 2.6.25 are borked
		2983	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2984	*/
		2985	struct utsname buf;
		2986	int major, minor, micro;
		2987
		2988	if (uname (&buf))
		2989	return;
		2990
		2991	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2992	return;
		2993
		2994	if (major < 2
		2995	|| (major == 2 && minor < 6)
		2996	|| (major == 2 && minor == 6 && micro < 25))
		2997	return;
		2998
		2999	fs_2625 = 1;
		3000	}
		3001
		3002	inline_size int
		3003	infy_newfd (void)
		3004	{
		3005	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3006	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3007	if (fd >= 0)
		3008	return fd;
		3009	#endif
		3010	return inotify_init ();
		3011	}
		3012
		3013	inline_size void
2206	infy_init (EV_P)	3014	infy_init (EV_P)
2207	{	3015	{
2208	if (fs_fd != -2)	3016	if (fs_fd != -2)
2209	return;	3017	return;
2210		3018
		3019	fs_fd = -1;
		3020
		3021	check_2625 (EV_A);
		3022
2211	fs_fd = inotify_init ();	3023	fs_fd = infy_newfd ();
2212		3024
2213	if (fs_fd >= 0)	3025	if (fs_fd >= 0)
2214	{	3026	{
		3027	fd_intern (fs_fd);
2215	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3028	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2216	ev_set_priority (&fs_w, EV_MAXPRI);	3029	ev_set_priority (&fs_w, EV_MAXPRI);
2217	ev_io_start (EV_A_ &fs_w);	3030	ev_io_start (EV_A_ &fs_w);
2218	}	3031	}
2219	}	3032	}
2220		3033
2221	void inline_size	3034	inline_size void
2222	infy_fork (EV_P)	3035	infy_fork (EV_P)
2223	{	3036	{
2224	int slot;	3037	int slot;
2225		3038
2226	if (fs_fd < 0)	3039	if (fs_fd < 0)
2227	return;	3040	return;
2228		3041
		3042	ev_io_stop (EV_A_ &fs_w);
2229	close (fs_fd);	3043	close (fs_fd);
2230	fs_fd = inotify_init ();	3044	fs_fd = infy_newfd ();
		3045
		3046	if (fs_fd >= 0)
		3047	{
		3048	fd_intern (fs_fd);
		3049	ev_io_set (&fs_w, fs_fd, EV_READ);
		3050	ev_io_start (EV_A_ &fs_w);
		3051	}
2231		3052
2232	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3053	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2233	{	3054	{
2234	WL w_ = fs_hash [slot].head;	3055	WL w_ = fs_hash [slot].head;
2235	fs_hash [slot].head = 0;	3056	fs_hash [slot].head = 0;
…		…
2242	w->wd = -1;	3063	w->wd = -1;
2243		3064
2244	if (fs_fd >= 0)	3065	if (fs_fd >= 0)
2245	infy_add (EV_A_ w); /* re-add, no matter what */	3066	infy_add (EV_A_ w); /* re-add, no matter what */
2246	else	3067	else
2247	ev_timer_start (EV_A_ &w->timer);	3068	ev_timer_again (EV_A_ &w->timer);
2248	}	3069	}
2249
2250	}	3070	}
2251	}	3071	}
2252		3072
		3073	#endif
		3074
		3075	#ifdef _WIN32
		3076	# define EV_LSTAT(p,b) _stati64 (p, b)
		3077	#else
		3078	# define EV_LSTAT(p,b) lstat (p, b)
2253	#endif	3079	#endif
2254		3080
2255	void	3081	void
2256	ev_stat_stat (EV_P_ ev_stat *w)	3082	ev_stat_stat (EV_P_ ev_stat *w)
2257	{	3083	{
…		…
2284	|| w->prev.st_atime != w->attr.st_atime	3110	|| w->prev.st_atime != w->attr.st_atime
2285	|| w->prev.st_mtime != w->attr.st_mtime	3111	|| w->prev.st_mtime != w->attr.st_mtime
2286	|| w->prev.st_ctime != w->attr.st_ctime	3112	|| w->prev.st_ctime != w->attr.st_ctime
2287	) {	3113	) {
2288	#if EV_USE_INOTIFY	3114	#if EV_USE_INOTIFY
		3115	if (fs_fd >= 0)
		3116	{
2289	infy_del (EV_A_ w);	3117	infy_del (EV_A_ w);
2290	infy_add (EV_A_ w);	3118	infy_add (EV_A_ w);
2291	ev_stat_stat (EV_A_ w); /* avoid race... */	3119	ev_stat_stat (EV_A_ w); /* avoid race... */
		3120	}
2292	#endif	3121	#endif
2293		3122
2294	ev_feed_event (EV_A_ w, EV_STAT);	3123	ev_feed_event (EV_A_ w, EV_STAT);
2295	}	3124	}
2296	}	3125	}
…		…
2299	ev_stat_start (EV_P_ ev_stat *w)	3128	ev_stat_start (EV_P_ ev_stat *w)
2300	{	3129	{
2301	if (expect_false (ev_is_active (w)))	3130	if (expect_false (ev_is_active (w)))
2302	return;	3131	return;
2303		3132
2304	/* since we use memcmp, we need to clear any padding data etc. */
2305	memset (&w->prev, 0, sizeof (ev_statdata));
2306	memset (&w->attr, 0, sizeof (ev_statdata));
2307
2308	ev_stat_stat (EV_A_ w);	3133	ev_stat_stat (EV_A_ w);
2309		3134
		3135	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2310	if (w->interval < MIN_STAT_INTERVAL)	3136	w->interval = MIN_STAT_INTERVAL;
2311	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2312		3137
2313	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3138	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2314	ev_set_priority (&w->timer, ev_priority (w));	3139	ev_set_priority (&w->timer, ev_priority (w));
2315		3140
2316	#if EV_USE_INOTIFY	3141	#if EV_USE_INOTIFY
2317	infy_init (EV_A);	3142	infy_init (EV_A);
2318		3143
2319	if (fs_fd >= 0)	3144	if (fs_fd >= 0)
2320	infy_add (EV_A_ w);	3145	infy_add (EV_A_ w);
2321	else	3146	else
2322	#endif	3147	#endif
2323	ev_timer_start (EV_A_ &w->timer);	3148	ev_timer_again (EV_A_ &w->timer);
2324		3149
2325	ev_start (EV_A_ (W)w, 1);	3150	ev_start (EV_A_ (W)w, 1);
		3151
		3152	EV_FREQUENT_CHECK;
2326	}	3153	}
2327		3154
2328	void	3155	void
2329	ev_stat_stop (EV_P_ ev_stat *w)	3156	ev_stat_stop (EV_P_ ev_stat *w)
2330	{	3157	{
2331	clear_pending (EV_A_ (W)w);	3158	clear_pending (EV_A_ (W)w);
2332	if (expect_false (!ev_is_active (w)))	3159	if (expect_false (!ev_is_active (w)))
2333	return;	3160	return;
2334		3161
		3162	EV_FREQUENT_CHECK;
		3163
2335	#if EV_USE_INOTIFY	3164	#if EV_USE_INOTIFY
2336	infy_del (EV_A_ w);	3165	infy_del (EV_A_ w);
2337	#endif	3166	#endif
2338	ev_timer_stop (EV_A_ &w->timer);	3167	ev_timer_stop (EV_A_ &w->timer);
2339		3168
2340	ev_stop (EV_A_ (W)w);	3169	ev_stop (EV_A_ (W)w);
		3170
		3171	EV_FREQUENT_CHECK;
2341	}	3172	}
2342	#endif	3173	#endif
2343		3174
2344	#if EV_IDLE_ENABLE	3175	#if EV_IDLE_ENABLE
2345	void	3176	void
…		…
2347	{	3178	{
2348	if (expect_false (ev_is_active (w)))	3179	if (expect_false (ev_is_active (w)))
2349	return;	3180	return;
2350		3181
2351	pri_adjust (EV_A_ (W)w);	3182	pri_adjust (EV_A_ (W)w);
		3183
		3184	EV_FREQUENT_CHECK;
2352		3185
2353	{	3186	{
2354	int active = ++idlecnt [ABSPRI (w)];	3187	int active = ++idlecnt [ABSPRI (w)];
2355		3188
2356	++idleall;	3189	++idleall;
2357	ev_start (EV_A_ (W)w, active);	3190	ev_start (EV_A_ (W)w, active);
2358		3191
2359	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	3192	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2360	idles [ABSPRI (w)][active - 1] = w;	3193	idles [ABSPRI (w)][active - 1] = w;
2361	}	3194	}
		3195
		3196	EV_FREQUENT_CHECK;
2362	}	3197	}
2363		3198
2364	void	3199	void
2365	ev_idle_stop (EV_P_ ev_idle *w)	3200	ev_idle_stop (EV_P_ ev_idle *w)
2366	{	3201	{
2367	clear_pending (EV_A_ (W)w);	3202	clear_pending (EV_A_ (W)w);
2368	if (expect_false (!ev_is_active (w)))	3203	if (expect_false (!ev_is_active (w)))
2369	return;	3204	return;
2370		3205
		3206	EV_FREQUENT_CHECK;
		3207
2371	{	3208	{
2372	int active = ((W)w)->active;	3209	int active = ev_active (w);
2373		3210
2374	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3211	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2375	((W)idles [ABSPRI (w)][active - 1])->active = active;	3212	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2376		3213
2377	ev_stop (EV_A_ (W)w);	3214	ev_stop (EV_A_ (W)w);
2378	--idleall;	3215	--idleall;
2379	}	3216	}
		3217
		3218	EV_FREQUENT_CHECK;
2380	}	3219	}
2381	#endif	3220	#endif
2382		3221
2383	void	3222	void
2384	ev_prepare_start (EV_P_ ev_prepare *w)	3223	ev_prepare_start (EV_P_ ev_prepare *w)
2385	{	3224	{
2386	if (expect_false (ev_is_active (w)))	3225	if (expect_false (ev_is_active (w)))
2387	return;	3226	return;
		3227
		3228	EV_FREQUENT_CHECK;
2388		3229
2389	ev_start (EV_A_ (W)w, ++preparecnt);	3230	ev_start (EV_A_ (W)w, ++preparecnt);
2390	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3231	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2391	prepares [preparecnt - 1] = w;	3232	prepares [preparecnt - 1] = w;
		3233
		3234	EV_FREQUENT_CHECK;
2392	}	3235	}
2393		3236
2394	void	3237	void
2395	ev_prepare_stop (EV_P_ ev_prepare *w)	3238	ev_prepare_stop (EV_P_ ev_prepare *w)
2396	{	3239	{
2397	clear_pending (EV_A_ (W)w);	3240	clear_pending (EV_A_ (W)w);
2398	if (expect_false (!ev_is_active (w)))	3241	if (expect_false (!ev_is_active (w)))
2399	return;	3242	return;
2400		3243
		3244	EV_FREQUENT_CHECK;
		3245
2401	{	3246	{
2402	int active = ((W)w)->active;	3247	int active = ev_active (w);
		3248
2403	prepares [active - 1] = prepares [--preparecnt];	3249	prepares [active - 1] = prepares [--preparecnt];
2404	((W)prepares [active - 1])->active = active;	3250	ev_active (prepares [active - 1]) = active;
2405	}	3251	}
2406		3252
2407	ev_stop (EV_A_ (W)w);	3253	ev_stop (EV_A_ (W)w);
		3254
		3255	EV_FREQUENT_CHECK;
2408	}	3256	}
2409		3257
2410	void	3258	void
2411	ev_check_start (EV_P_ ev_check *w)	3259	ev_check_start (EV_P_ ev_check *w)
2412	{	3260	{
2413	if (expect_false (ev_is_active (w)))	3261	if (expect_false (ev_is_active (w)))
2414	return;	3262	return;
		3263
		3264	EV_FREQUENT_CHECK;
2415		3265
2416	ev_start (EV_A_ (W)w, ++checkcnt);	3266	ev_start (EV_A_ (W)w, ++checkcnt);
2417	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3267	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2418	checks [checkcnt - 1] = w;	3268	checks [checkcnt - 1] = w;
		3269
		3270	EV_FREQUENT_CHECK;
2419	}	3271	}
2420		3272
2421	void	3273	void
2422	ev_check_stop (EV_P_ ev_check *w)	3274	ev_check_stop (EV_P_ ev_check *w)
2423	{	3275	{
2424	clear_pending (EV_A_ (W)w);	3276	clear_pending (EV_A_ (W)w);
2425	if (expect_false (!ev_is_active (w)))	3277	if (expect_false (!ev_is_active (w)))
2426	return;	3278	return;
2427		3279
		3280	EV_FREQUENT_CHECK;
		3281
2428	{	3282	{
2429	int active = ((W)w)->active;	3283	int active = ev_active (w);
		3284
2430	checks [active - 1] = checks [--checkcnt];	3285	checks [active - 1] = checks [--checkcnt];
2431	((W)checks [active - 1])->active = active;	3286	ev_active (checks [active - 1]) = active;
2432	}	3287	}
2433		3288
2434	ev_stop (EV_A_ (W)w);	3289	ev_stop (EV_A_ (W)w);
		3290
		3291	EV_FREQUENT_CHECK;
2435	}	3292	}
2436		3293
2437	#if EV_EMBED_ENABLE	3294	#if EV_EMBED_ENABLE
2438	void noinline	3295	void noinline
2439	ev_embed_sweep (EV_P_ ev_embed *w)	3296	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2456	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3313	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2457	{	3314	{
2458	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3315	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2459		3316
2460	{	3317	{
2461	struct ev_loop *loop = w->other;	3318	EV_P = w->other;
2462		3319
2463	while (fdchangecnt)	3320	while (fdchangecnt)
2464	{	3321	{
2465	fd_reify (EV_A);	3322	fd_reify (EV_A);
2466	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3323	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2467	}	3324	}
2468	}	3325	}
2469	}	3326	}
2470		3327
		3328	static void
		3329	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3330	{
		3331	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3332
		3333	ev_embed_stop (EV_A_ w);
		3334
		3335	{
		3336	EV_P = w->other;
		3337
		3338	ev_loop_fork (EV_A);
		3339	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3340	}
		3341
		3342	ev_embed_start (EV_A_ w);
		3343	}
		3344
2471	#if 0	3345	#if 0
2472	static void	3346	static void
2473	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3347	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2474	{	3348	{
2475	ev_idle_stop (EV_A_ idle);	3349	ev_idle_stop (EV_A_ idle);
…		…
2481	{	3355	{
2482	if (expect_false (ev_is_active (w)))	3356	if (expect_false (ev_is_active (w)))
2483	return;	3357	return;
2484		3358
2485	{	3359	{
2486	struct ev_loop *loop = w->other;	3360	EV_P = w->other;
2487	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3361	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2488	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3362	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2489	}	3363	}
		3364
		3365	EV_FREQUENT_CHECK;
2490		3366
2491	ev_set_priority (&w->io, ev_priority (w));	3367	ev_set_priority (&w->io, ev_priority (w));
2492	ev_io_start (EV_A_ &w->io);	3368	ev_io_start (EV_A_ &w->io);
2493		3369
2494	ev_prepare_init (&w->prepare, embed_prepare_cb);	3370	ev_prepare_init (&w->prepare, embed_prepare_cb);
2495	ev_set_priority (&w->prepare, EV_MINPRI);	3371	ev_set_priority (&w->prepare, EV_MINPRI);
2496	ev_prepare_start (EV_A_ &w->prepare);	3372	ev_prepare_start (EV_A_ &w->prepare);
2497		3373
		3374	ev_fork_init (&w->fork, embed_fork_cb);
		3375	ev_fork_start (EV_A_ &w->fork);
		3376
2498	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3377	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2499		3378
2500	ev_start (EV_A_ (W)w, 1);	3379	ev_start (EV_A_ (W)w, 1);
		3380
		3381	EV_FREQUENT_CHECK;
2501	}	3382	}
2502		3383
2503	void	3384	void
2504	ev_embed_stop (EV_P_ ev_embed *w)	3385	ev_embed_stop (EV_P_ ev_embed *w)
2505	{	3386	{
2506	clear_pending (EV_A_ (W)w);	3387	clear_pending (EV_A_ (W)w);
2507	if (expect_false (!ev_is_active (w)))	3388	if (expect_false (!ev_is_active (w)))
2508	return;	3389	return;
2509		3390
		3391	EV_FREQUENT_CHECK;
		3392
2510	ev_io_stop (EV_A_ &w->io);	3393	ev_io_stop (EV_A_ &w->io);
2511	ev_prepare_stop (EV_A_ &w->prepare);	3394	ev_prepare_stop (EV_A_ &w->prepare);
		3395	ev_fork_stop (EV_A_ &w->fork);
2512		3396
2513	ev_stop (EV_A_ (W)w);	3397	EV_FREQUENT_CHECK;
2514	}	3398	}
2515	#endif	3399	#endif
2516		3400
2517	#if EV_FORK_ENABLE	3401	#if EV_FORK_ENABLE
2518	void	3402	void
2519	ev_fork_start (EV_P_ ev_fork *w)	3403	ev_fork_start (EV_P_ ev_fork *w)
2520	{	3404	{
2521	if (expect_false (ev_is_active (w)))	3405	if (expect_false (ev_is_active (w)))
2522	return;	3406	return;
		3407
		3408	EV_FREQUENT_CHECK;
2523		3409
2524	ev_start (EV_A_ (W)w, ++forkcnt);	3410	ev_start (EV_A_ (W)w, ++forkcnt);
2525	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3411	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2526	forks [forkcnt - 1] = w;	3412	forks [forkcnt - 1] = w;
		3413
		3414	EV_FREQUENT_CHECK;
2527	}	3415	}
2528		3416
2529	void	3417	void
2530	ev_fork_stop (EV_P_ ev_fork *w)	3418	ev_fork_stop (EV_P_ ev_fork *w)
2531	{	3419	{
2532	clear_pending (EV_A_ (W)w);	3420	clear_pending (EV_A_ (W)w);
2533	if (expect_false (!ev_is_active (w)))	3421	if (expect_false (!ev_is_active (w)))
2534	return;	3422	return;
2535		3423
		3424	EV_FREQUENT_CHECK;
		3425
2536	{	3426	{
2537	int active = ((W)w)->active;	3427	int active = ev_active (w);
		3428
2538	forks [active - 1] = forks [--forkcnt];	3429	forks [active - 1] = forks [--forkcnt];
2539	((W)forks [active - 1])->active = active;	3430	ev_active (forks [active - 1]) = active;
2540	}	3431	}
2541		3432
2542	ev_stop (EV_A_ (W)w);	3433	ev_stop (EV_A_ (W)w);
		3434
		3435	EV_FREQUENT_CHECK;
2543	}	3436	}
2544	#endif	3437	#endif
2545		3438
2546	#if EV_ASYNC_ENABLE	3439	#if EV_ASYNC_ENABLE
2547	void	3440	void
…		…
2549	{	3442	{
2550	if (expect_false (ev_is_active (w)))	3443	if (expect_false (ev_is_active (w)))
2551	return;	3444	return;
2552		3445
2553	evpipe_init (EV_A);	3446	evpipe_init (EV_A);
		3447
		3448	EV_FREQUENT_CHECK;
2554		3449
2555	ev_start (EV_A_ (W)w, ++asynccnt);	3450	ev_start (EV_A_ (W)w, ++asynccnt);
2556	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3451	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2557	asyncs [asynccnt - 1] = w;	3452	asyncs [asynccnt - 1] = w;
		3453
		3454	EV_FREQUENT_CHECK;
2558	}	3455	}
2559		3456
2560	void	3457	void
2561	ev_async_stop (EV_P_ ev_async *w)	3458	ev_async_stop (EV_P_ ev_async *w)
2562	{	3459	{
2563	clear_pending (EV_A_ (W)w);	3460	clear_pending (EV_A_ (W)w);
2564	if (expect_false (!ev_is_active (w)))	3461	if (expect_false (!ev_is_active (w)))
2565	return;	3462	return;
2566		3463
		3464	EV_FREQUENT_CHECK;
		3465
2567	{	3466	{
2568	int active = ((W)w)->active;	3467	int active = ev_active (w);
		3468
2569	asyncs [active - 1] = asyncs [--asynccnt];	3469	asyncs [active - 1] = asyncs [--asynccnt];
2570	((W)asyncs [active - 1])->active = active;	3470	ev_active (asyncs [active - 1]) = active;
2571	}	3471	}
2572		3472
2573	ev_stop (EV_A_ (W)w);	3473	ev_stop (EV_A_ (W)w);
		3474
		3475	EV_FREQUENT_CHECK;
2574	}	3476	}
2575		3477
2576	void	3478	void
2577	ev_async_send (EV_P_ ev_async *w)	3479	ev_async_send (EV_P_ ev_async *w)
2578	{	3480	{
2579	w->sent = 1;	3481	w->sent = 1;
2580	evpipe_write (EV_A_ &gotasync);	3482	evpipe_write (EV_A_ &async_pending);
2581	}	3483	}
2582	#endif	3484	#endif
2583		3485
2584	/*****************************************************************************/	3486	/*****************************************************************************/
2585		3487
…		…
2595	once_cb (EV_P_ struct ev_once *once, int revents)	3497	once_cb (EV_P_ struct ev_once *once, int revents)
2596	{	3498	{
2597	void (*cb)(int revents, void *arg) = once->cb;	3499	void (*cb)(int revents, void *arg) = once->cb;
2598	void *arg = once->arg;	3500	void *arg = once->arg;
2599		3501
2600	ev_io_stop (EV_A_ &once->io);	3502	ev_io_stop (EV_A_ &once->io);
2601	ev_timer_stop (EV_A_ &once->to);	3503	ev_timer_stop (EV_A_ &once->to);
2602	ev_free (once);	3504	ev_free (once);
2603		3505
2604	cb (revents, arg);	3506	cb (revents, arg);
2605	}	3507	}
2606		3508
2607	static void	3509	static void
2608	once_cb_io (EV_P_ ev_io *w, int revents)	3510	once_cb_io (EV_P_ ev_io *w, int revents)
2609	{	3511	{
2610	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3512	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3513
		3514	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2611	}	3515	}
2612		3516
2613	static void	3517	static void
2614	once_cb_to (EV_P_ ev_timer *w, int revents)	3518	once_cb_to (EV_P_ ev_timer *w, int revents)
2615	{	3519	{
2616	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3520	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3521
		3522	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2617	}	3523	}
2618		3524
2619	void	3525	void
2620	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3526	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2621	{	3527	{
…		…
2643	ev_timer_set (&once->to, timeout, 0.);	3549	ev_timer_set (&once->to, timeout, 0.);
2644	ev_timer_start (EV_A_ &once->to);	3550	ev_timer_start (EV_A_ &once->to);
2645	}	3551	}
2646	}	3552	}
2647		3553
		3554	/*****************************************************************************/
		3555
		3556	#if EV_WALK_ENABLE
		3557	void
		3558	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3559	{
		3560	int i, j;
		3561	ev_watcher_list *wl, *wn;
		3562
		3563	if (types & (EV_IO | EV_EMBED))
		3564	for (i = 0; i < anfdmax; ++i)
		3565	for (wl = anfds [i].head; wl; )
		3566	{
		3567	wn = wl->next;
		3568
		3569	#if EV_EMBED_ENABLE
		3570	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3571	{
		3572	if (types & EV_EMBED)
		3573	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3574	}
		3575	else
		3576	#endif
		3577	#if EV_USE_INOTIFY
		3578	if (ev_cb ((ev_io *)wl) == infy_cb)
		3579	;
		3580	else
		3581	#endif
		3582	if ((ev_io *)wl != &pipe_w)
		3583	if (types & EV_IO)
		3584	cb (EV_A_ EV_IO, wl);
		3585
		3586	wl = wn;
		3587	}
		3588
		3589	if (types & (EV_TIMER | EV_STAT))
		3590	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3591	#if EV_STAT_ENABLE
		3592	/*TODO: timer is not always active*/
		3593	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3594	{
		3595	if (types & EV_STAT)
		3596	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3597	}
		3598	else
		3599	#endif
		3600	if (types & EV_TIMER)
		3601	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3602
		3603	#if EV_PERIODIC_ENABLE
		3604	if (types & EV_PERIODIC)
		3605	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3606	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3607	#endif
		3608
		3609	#if EV_IDLE_ENABLE
		3610	if (types & EV_IDLE)
		3611	for (j = NUMPRI; i--; )
		3612	for (i = idlecnt [j]; i--; )
		3613	cb (EV_A_ EV_IDLE, idles [j][i]);
		3614	#endif
		3615
		3616	#if EV_FORK_ENABLE
		3617	if (types & EV_FORK)
		3618	for (i = forkcnt; i--; )
		3619	if (ev_cb (forks [i]) != embed_fork_cb)
		3620	cb (EV_A_ EV_FORK, forks [i]);
		3621	#endif
		3622
		3623	#if EV_ASYNC_ENABLE
		3624	if (types & EV_ASYNC)
		3625	for (i = asynccnt; i--; )
		3626	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3627	#endif
		3628
		3629	if (types & EV_PREPARE)
		3630	for (i = preparecnt; i--; )
		3631	#if EV_EMBED_ENABLE
		3632	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3633	#endif
		3634	cb (EV_A_ EV_PREPARE, prepares [i]);
		3635
		3636	if (types & EV_CHECK)
		3637	for (i = checkcnt; i--; )
		3638	cb (EV_A_ EV_CHECK, checks [i]);
		3639
		3640	if (types & EV_SIGNAL)
		3641	for (i = 0; i < EV_NSIG - 1; ++i)
		3642	for (wl = signals [i].head; wl; )
		3643	{
		3644	wn = wl->next;
		3645	cb (EV_A_ EV_SIGNAL, wl);
		3646	wl = wn;
		3647	}
		3648
		3649	if (types & EV_CHILD)
		3650	for (i = EV_PID_HASHSIZE; i--; )
		3651	for (wl = childs [i]; wl; )
		3652	{
		3653	wn = wl->next;
		3654	cb (EV_A_ EV_CHILD, wl);
		3655	wl = wn;
		3656	}
		3657	/* EV_STAT 0x00001000 /* stat data changed */
		3658	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3659	}
		3660	#endif
		3661
2648	#if EV_MULTIPLICITY	3662	#if EV_MULTIPLICITY
2649	#include "ev_wrap.h"	3663	#include "ev_wrap.h"
2650	#endif	3664	#endif
2651		3665
2652	#ifdef __cplusplus	3666	#ifdef __cplusplus

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