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Comparing libev/ev.c (file contents):
Revision 1.229 by root, Fri May 2 08:08:45 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;
…		…
328	typedef ev_watcher_time *WT;	491	typedef ev_watcher_time *WT;
329		492
330	#define ev_active(w) ((W)(w))->active	493	#define ev_active(w) ((W)(w))->active
331	#define ev_at(w) ((WT)(w))->at	494	#define ev_at(w) ((WT)(w))->at
332		495
333	#if EV_USE_MONOTONIC	496	#if EV_USE_REALTIME
334	/* 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 */
335	/* 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
336	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)
337	#endif	514	#endif
338		515
339	#ifdef _WIN32	516	#ifdef _WIN32
340	# include "ev_win32.c"	517	# include "ev_win32.c"
341	#endif	518	#endif
…		…
349	{	526	{
350	syserr_cb = cb;	527	syserr_cb = cb;
351	}	528	}
352		529
353	static void noinline	530	static void noinline
354	syserr (const char *msg)	531	ev_syserr (const char *msg)
355	{	532	{
356	if (!msg)	533	if (!msg)
357	msg = "(libev) system error";	534	msg = "(libev) system error";
358		535
359	if (syserr_cb)	536	if (syserr_cb)
…		…
405	#define ev_malloc(size) ev_realloc (0, (size))	582	#define ev_malloc(size) ev_realloc (0, (size))
406	#define ev_free(ptr) ev_realloc ((ptr), 0)	583	#define ev_free(ptr) ev_realloc ((ptr), 0)
407		584
408	/*****************************************************************************/	585	/*****************************************************************************/
409		586
		587	/* set in reify when reification needed */
		588	#define EV_ANFD_REIFY 1
		589
		590	/* file descriptor info structure */
410	typedef struct	591	typedef struct
411	{	592	{
412	WL head;	593	WL head;
413	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 */
414	unsigned char reify;	597	unsigned char unused;
		598	#if EV_USE_EPOLL
		599	unsigned int egen; /* generation counter to counter epoll bugs */
		600	#endif
415	#if EV_SELECT_IS_WINSOCKET	601	#if EV_SELECT_IS_WINSOCKET
416	SOCKET handle;	602	SOCKET handle;
417	#endif	603	#endif
418	} ANFD;	604	} ANFD;
419		605
		606	/* stores the pending event set for a given watcher */
420	typedef struct	607	typedef struct
421	{	608	{
422	W w;	609	W w;
423	int events;	610	int events; /* the pending event set for the given watcher */
424	} ANPENDING;	611	} ANPENDING;
425		612
426	#if EV_USE_INOTIFY	613	#if EV_USE_INOTIFY
		614	/* hash table entry per inotify-id */
427	typedef struct	615	typedef struct
428	{	616	{
429	WL head;	617	WL head;
430	} 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)
431	#endif	639	#endif
432		640
433	#if EV_MULTIPLICITY	641	#if EV_MULTIPLICITY
434		642
435	struct ev_loop	643	struct ev_loop
…		…
454		662
455	static int ev_default_loop_ptr;	663	static int ev_default_loop_ptr;
456		664
457	#endif	665	#endif
458		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
459	/*****************************************************************************/	679	/*****************************************************************************/
460		680
		681	#ifndef EV_HAVE_EV_TIME
461	ev_tstamp	682	ev_tstamp
462	ev_time (void)	683	ev_time (void)
463	{	684	{
464	#if EV_USE_REALTIME	685	#if EV_USE_REALTIME
		686	if (expect_true (have_realtime))
		687	{
465	struct timespec ts;	688	struct timespec ts;
466	clock_gettime (CLOCK_REALTIME, &ts);	689	clock_gettime (CLOCK_REALTIME, &ts);
467	return ts.tv_sec + ts.tv_nsec * 1e-9;	690	return ts.tv_sec + ts.tv_nsec * 1e-9;
468	#else	691	}
		692	#endif
		693
469	struct timeval tv;	694	struct timeval tv;
470	gettimeofday (&tv, 0);	695	gettimeofday (&tv, 0);
471	return tv.tv_sec + tv.tv_usec * 1e-6;	696	return tv.tv_sec + tv.tv_usec * 1e-6;
472	#endif
473	}	697	}
		698	#endif
474		699
475	ev_tstamp inline_size	700	inline_size ev_tstamp
476	get_clock (void)	701	get_clock (void)
477	{	702	{
478	#if EV_USE_MONOTONIC	703	#if EV_USE_MONOTONIC
479	if (expect_true (have_monotonic))	704	if (expect_true (have_monotonic))
480	{	705	{
…		…
513	struct timeval tv;	738	struct timeval tv;
514		739
515	tv.tv_sec = (time_t)delay;	740	tv.tv_sec = (time_t)delay;
516	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	741	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
517		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 */
518	select (0, 0, 0, 0, &tv);	746	select (0, 0, 0, 0, &tv);
519	#endif	747	#endif
520	}	748	}
521	}	749	}
522		750
523	/*****************************************************************************/	751	/*****************************************************************************/
524		752
525	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
526	array_nextsize (int elem, int cur, int cnt)	758	array_nextsize (int elem, int cur, int cnt)
527	{	759	{
528	int ncur = cur + 1;	760	int ncur = cur + 1;
529		761
530	do	762	do
531	ncur <<= 1;	763	ncur <<= 1;
532	while (cnt > ncur);	764	while (cnt > ncur);
533		765
534	/* 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 */
535	if (elem * ncur > 4096)	767	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
536	{	768	{
537	ncur *= elem;	769	ncur *= elem;
538	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	770	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
539	ncur = ncur - sizeof (void *) * 4;	771	ncur = ncur - sizeof (void *) * 4;
540	ncur /= elem;	772	ncur /= elem;
541	}	773	}
542		774
543	return ncur;	775	return ncur;
…		…
547	array_realloc (int elem, void *base, int *cur, int cnt)	779	array_realloc (int elem, void *base, int *cur, int cnt)
548	{	780	{
549	*cur = array_nextsize (elem, *cur, cnt);	781	*cur = array_nextsize (elem, *cur, cnt);
550	return ev_realloc (base, elem * *cur);	782	return ev_realloc (base, elem * *cur);
551	}	783	}
		784
		785	#define array_init_zero(base,count) \
		786	memset ((void *)(base), 0, sizeof (*(base)) * (count))
552		787
553	#define array_needsize(type,base,cur,cnt,init) \	788	#define array_needsize(type,base,cur,cnt,init) \
554	if (expect_false ((cnt) > (cur))) \	789	if (expect_false ((cnt) > (cur))) \
555	{ \	790	{ \
556	int ocur_ = (cur); \	791	int ocur_ = (cur); \
…		…
568	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	803	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
569	}	804	}
570	#endif	805	#endif
571		806
572	#define array_free(stem, idx) \	807	#define array_free(stem, idx) \
573	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
574		809
575	/*****************************************************************************/	810	/*****************************************************************************/
		811
		812	/* dummy callback for pending events */
		813	static void noinline
		814	pendingcb (EV_P_ ev_prepare *w, int revents)
		815	{
		816	}
576		817
577	void noinline	818	void noinline
578	ev_feed_event (EV_P_ void *w, int revents)	819	ev_feed_event (EV_P_ void *w, int revents)
579	{	820	{
580	W w_ = (W)w;	821	W w_ = (W)w;
…		…
589	pendings [pri][w_->pending - 1].w = w_;	830	pendings [pri][w_->pending - 1].w = w_;
590	pendings [pri][w_->pending - 1].events = revents;	831	pendings [pri][w_->pending - 1].events = revents;
591	}	832	}
592	}	833	}
593		834
594	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
595	queue_events (EV_P_ W *events, int eventcnt, int type)	851	queue_events (EV_P_ W *events, int eventcnt, int type)
596	{	852	{
597	int i;	853	int i;
598		854
599	for (i = 0; i < eventcnt; ++i)	855	for (i = 0; i < eventcnt; ++i)
600	ev_feed_event (EV_A_ events [i], type);	856	ev_feed_event (EV_A_ events [i], type);
601	}	857	}
602		858
603	/*****************************************************************************/	859	/*****************************************************************************/
604		860
605	void inline_size	861	inline_speed void
606	anfds_init (ANFD *base, int count)
607	{
608	while (count--)
609	{
610	base->head = 0;
611	base->events = EV_NONE;
612	base->reify = 0;
613
614	++base;
615	}
616	}
617
618	void inline_speed
619	fd_event (EV_P_ int fd, int revents)	862	fd_event_nc (EV_P_ int fd, int revents)
620	{	863	{
621	ANFD *anfd = anfds + fd;	864	ANFD *anfd = anfds + fd;
622	ev_io *w;	865	ev_io *w;
623		866
624	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)
…		…
628	if (ev)	871	if (ev)
629	ev_feed_event (EV_A_ (W)w, ev);	872	ev_feed_event (EV_A_ (W)w, ev);
630	}	873	}
631	}	874	}
632		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
633	void	887	void
634	ev_feed_fd_event (EV_P_ int fd, int revents)	888	ev_feed_fd_event (EV_P_ int fd, int revents)
635	{	889	{
636	if (fd >= 0 && fd < anfdmax)	890	if (fd >= 0 && fd < anfdmax)
637	fd_event (EV_A_ fd, revents);	891	fd_event_nc (EV_A_ fd, revents);
638	}	892	}
639		893
640	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
641	fd_reify (EV_P)	897	fd_reify (EV_P)
642	{	898	{
643	int i;	899	int i;
644		900
645	for (i = 0; i < fdchangecnt; ++i)	901	for (i = 0; i < fdchangecnt; ++i)
…		…
654	events |= (unsigned char)w->events;	910	events |= (unsigned char)w->events;
655		911
656	#if EV_SELECT_IS_WINSOCKET	912	#if EV_SELECT_IS_WINSOCKET
657	if (events)	913	if (events)
658	{	914	{
659	unsigned long argp;	915	unsigned long arg;
660	#ifdef EV_FD_TO_WIN32_HANDLE
661	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	916	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
662	#else
663	anfd->handle = _get_osfhandle (fd);
664	#endif
665	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));
666	}	918	}
667	#endif	919	#endif
668		920
669	{	921	{
670	unsigned char o_events = anfd->events;	922	unsigned char o_events = anfd->events;
671	unsigned char o_reify = anfd->reify;	923	unsigned char o_reify = anfd->reify;
672		924
673	anfd->reify = 0;	925	anfd->reify = 0;
674	anfd->events = events;	926	anfd->events = events;
675		927
676	if (o_events != events || o_reify & EV_IOFDSET)	928	if (o_events != events || o_reify & EV__IOFDSET)
677	backend_modify (EV_A_ fd, o_events, events);	929	backend_modify (EV_A_ fd, o_events, events);
678	}	930	}
679	}	931	}
680		932
681	fdchangecnt = 0;	933	fdchangecnt = 0;
682	}	934	}
683		935
684	void inline_size	936	/* something about the given fd changed */
		937	inline_size void
685	fd_change (EV_P_ int fd, int flags)	938	fd_change (EV_P_ int fd, int flags)
686	{	939	{
687	unsigned char reify = anfds [fd].reify;	940	unsigned char reify = anfds [fd].reify;
688	anfds [fd].reify |= flags;	941	anfds [fd].reify |= flags;
689		942
…		…
693	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	946	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
694	fdchanges [fdchangecnt - 1] = fd;	947	fdchanges [fdchangecnt - 1] = fd;
695	}	948	}
696	}	949	}
697		950
698	void inline_speed	951	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		952	inline_speed void
699	fd_kill (EV_P_ int fd)	953	fd_kill (EV_P_ int fd)
700	{	954	{
701	ev_io *w;	955	ev_io *w;
702		956
703	while ((w = (ev_io *)anfds [fd].head))	957	while ((w = (ev_io *)anfds [fd].head))
…		…
705	ev_io_stop (EV_A_ w);	959	ev_io_stop (EV_A_ w);
706	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);
707	}	961	}
708	}	962	}
709		963
710	int inline_size	964	/* check whether the given fd is atcually valid, for error recovery */
		965	inline_size int
711	fd_valid (int fd)	966	fd_valid (int fd)
712	{	967	{
713	#ifdef _WIN32	968	#ifdef _WIN32
714	return _get_osfhandle (fd) != -1;	969	return _get_osfhandle (fd) != -1;
715	#else	970	#else
…		…
723	{	978	{
724	int fd;	979	int fd;
725		980
726	for (fd = 0; fd < anfdmax; ++fd)	981	for (fd = 0; fd < anfdmax; ++fd)
727	if (anfds [fd].events)	982	if (anfds [fd].events)
728	if (!fd_valid (fd) == -1 && errno == EBADF)	983	if (!fd_valid (fd) && errno == EBADF)
729	fd_kill (EV_A_ fd);	984	fd_kill (EV_A_ fd);
730	}	985	}
731		986
732	/* 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 */
733	static void noinline	988	static void noinline
…		…
737		992
738	for (fd = anfdmax; fd--; )	993	for (fd = anfdmax; fd--; )
739	if (anfds [fd].events)	994	if (anfds [fd].events)
740	{	995	{
741	fd_kill (EV_A_ fd);	996	fd_kill (EV_A_ fd);
742	return;	997	break;
743	}	998	}
744	}	999	}
745		1000
746	/* 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 */
747	static void noinline	1002	static void noinline
…		…
751		1006
752	for (fd = 0; fd < anfdmax; ++fd)	1007	for (fd = 0; fd < anfdmax; ++fd)
753	if (anfds [fd].events)	1008	if (anfds [fd].events)
754	{	1009	{
755	anfds [fd].events = 0;	1010	anfds [fd].events = 0;
		1011	anfds [fd].emask = 0;
756	fd_change (EV_A_ fd, EV_IOFDSET | 1);	1012	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
757	}	1013	}
758	}	1014	}
759		1015
760	/*****************************************************************************/	1016	/*****************************************************************************/
761		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
762	/* towards the root */	1117	/* towards the root */
763	void inline_speed	1118	inline_speed void
764	upheap (WT *heap, int k)	1119	upheap (ANHE *heap, int k)
765	{	1120	{
766	WT w = heap [k];	1121	ANHE he = heap [k];
767		1122
768	for (;;)	1123	for (;;)
769	{	1124	{
770	int p = k >> 1;	1125	int p = HPARENT (k);
771		1126
772	/* maybe we could use a dummy element at heap [0]? */	1127	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
773	if (!p || heap [p]->at <= w->at)
774	break;	1128	break;
775		1129
776	heap [k] = heap [p];	1130	heap [k] = heap [p];
777	((W)heap [k])->active = k;	1131	ev_active (ANHE_w (heap [k])) = k;
778	k = p;	1132	k = p;
779	}	1133	}
780		1134
781	heap [k] = w;	1135	heap [k] = he;
782	((W)heap [k])->active = k;	1136	ev_active (ANHE_w (he)) = k;
783	}	1137	}
784		1138
785	/* away from the root */	1139	/* move an element suitably so it is in a correct place */
786	void inline_speed	1140	inline_size void
787	downheap (WT *heap, int N, int k)
788	{
789	WT w = heap [k];
790
791	for (;;)
792	{
793	int c = k << 1;
794
795	if (c > N)
796	break;
797
798	c += c < N && heap [c]->at > heap [c + 1]->at
799	? 1 : 0;
800
801	if (w->at <= heap [c]->at)
802	break;
803
804	heap [k] = heap [c];
805	((W)heap [k])->active = k;
806
807	k = c;
808	}
809
810	heap [k] = w;
811	((W)heap [k])->active = k;
812	}
813
814	void inline_size
815	adjustheap (WT *heap, int N, int k)	1141	adjustheap (ANHE *heap, int N, int k)
816	{	1142	{
		1143	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
817	upheap (heap, k);	1144	upheap (heap, k);
		1145	else
818	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);
819	}	1159	}
820		1160
821	/*****************************************************************************/	1161	/*****************************************************************************/
822		1162
		1163	/* associate signal watchers to a signal signal */
823	typedef struct	1164	typedef struct
824	{	1165	{
		1166	EV_ATOMIC_T pending;
		1167	#if EV_MULTIPLICITY
		1168	EV_P;
		1169	#endif
825	WL head;	1170	WL head;
826	EV_ATOMIC_T gotsig;
827	} ANSIG;	1171	} ANSIG;
828		1172
829	static ANSIG *signals;	1173	static ANSIG signals [EV_NSIG - 1];
830	static int signalmax;
831
832	static EV_ATOMIC_T gotsig;
833
834	void inline_size
835	signals_init (ANSIG *base, int count)
836	{
837	while (count--)
838	{
839	base->head = 0;
840	base->gotsig = 0;
841
842	++base;
843	}
844	}
845		1174
846	/*****************************************************************************/	1175	/*****************************************************************************/
847		1176
848	void inline_speed	1177	/* used to prepare libev internal fd's */
		1178	/* this is not fork-safe */
		1179	inline_speed void
849	fd_intern (int fd)	1180	fd_intern (int fd)
850	{	1181	{
851	#ifdef _WIN32	1182	#ifdef _WIN32
852	int arg = 1;	1183	unsigned long arg = 1;
853	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1184	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
854	#else	1185	#else
855	fcntl (fd, F_SETFD, FD_CLOEXEC);	1186	fcntl (fd, F_SETFD, FD_CLOEXEC);
856	fcntl (fd, F_SETFL, O_NONBLOCK);	1187	fcntl (fd, F_SETFL, O_NONBLOCK);
857	#endif	1188	#endif
858	}	1189	}
859		1190
860	static void noinline	1191	static void noinline
861	evpipe_init (EV_P)	1192	evpipe_init (EV_P)
862	{	1193	{
863	if (!ev_is_active (&pipeev))	1194	if (!ev_is_active (&pipe_w))
864	{	1195	{
865	#if EV_USE_EVENTFD	1196	#if EV_USE_EVENTFD
		1197	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1198	if (evfd < 0 && errno == EINVAL)
866	if ((evfd = eventfd (0, 0)) >= 0)	1199	evfd = eventfd (0, 0);
		1200
		1201	if (evfd >= 0)
867	{	1202	{
868	evpipe [0] = -1;	1203	evpipe [0] = -1;
869	fd_intern (evfd);	1204	fd_intern (evfd); /* doing it twice doesn't hurt */
870	ev_io_set (&pipeev, evfd, EV_READ);	1205	ev_io_set (&pipe_w, evfd, EV_READ);
871	}	1206	}
872	else	1207	else
873	#endif	1208	#endif
874	{	1209	{
875	while (pipe (evpipe))	1210	while (pipe (evpipe))
876	syserr ("(libev) error creating signal/async pipe");	1211	ev_syserr ("(libev) error creating signal/async pipe");
877		1212
878	fd_intern (evpipe [0]);	1213	fd_intern (evpipe [0]);
879	fd_intern (evpipe [1]);	1214	fd_intern (evpipe [1]);
880	ev_io_set (&pipeev, evpipe [0], EV_READ);	1215	ev_io_set (&pipe_w, evpipe [0], EV_READ);
881	}	1216	}
882		1217
883	ev_io_start (EV_A_ &pipeev);	1218	ev_io_start (EV_A_ &pipe_w);
884	ev_unref (EV_A); /* watcher should not keep loop alive */	1219	ev_unref (EV_A); /* watcher should not keep loop alive */
885	}	1220	}
886	}	1221	}
887		1222
888	void inline_size	1223	inline_size void
889	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1224	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
890	{	1225	{
891	if (!*flag)	1226	if (!*flag)
892	{	1227	{
893	int old_errno = errno; /* save errno because write might clobber it */	1228	int old_errno = errno; /* save errno because write might clobber it */
…		…
906		1241
907	errno = old_errno;	1242	errno = old_errno;
908	}	1243	}
909	}	1244	}
910		1245
		1246	/* called whenever the libev signal pipe */
		1247	/* got some events (signal, async) */
911	static void	1248	static void
912	pipecb (EV_P_ ev_io *iow, int revents)	1249	pipecb (EV_P_ ev_io *iow, int revents)
913	{	1250	{
		1251	int i;
		1252
914	#if EV_USE_EVENTFD	1253	#if EV_USE_EVENTFD
915	if (evfd >= 0)	1254	if (evfd >= 0)
916	{	1255	{
917	uint64_t counter = 1;	1256	uint64_t counter;
918	read (evfd, &counter, sizeof (uint64_t));	1257	read (evfd, &counter, sizeof (uint64_t));
919	}	1258	}
920	else	1259	else
921	#endif	1260	#endif
922	{	1261	{
923	char dummy;	1262	char dummy;
924	read (evpipe [0], &dummy, 1);	1263	read (evpipe [0], &dummy, 1);
925	}	1264	}
926		1265
927	if (gotsig && ev_is_default_loop (EV_A))	1266	if (sig_pending)
928	{	1267	{
929	int signum;	1268	sig_pending = 0;
930	gotsig = 0;
931		1269
932	for (signum = signalmax; signum--; )	1270	for (i = EV_NSIG - 1; i--; )
933	if (signals [signum].gotsig)	1271	if (expect_false (signals [i].pending))
934	ev_feed_signal_event (EV_A_ signum + 1);	1272	ev_feed_signal_event (EV_A_ i + 1);
935	}	1273	}
936		1274
937	#if EV_ASYNC_ENABLE	1275	#if EV_ASYNC_ENABLE
938	if (gotasync)	1276	if (async_pending)
939	{	1277	{
940	int i;	1278	async_pending = 0;
941	gotasync = 0;
942		1279
943	for (i = asynccnt; i--; )	1280	for (i = asynccnt; i--; )
944	if (asyncs [i]->sent)	1281	if (asyncs [i]->sent)
945	{	1282	{
946	asyncs [i]->sent = 0;	1283	asyncs [i]->sent = 0;
…		…
954		1291
955	static void	1292	static void
956	ev_sighandler (int signum)	1293	ev_sighandler (int signum)
957	{	1294	{
958	#if EV_MULTIPLICITY	1295	#if EV_MULTIPLICITY
959	struct ev_loop *loop = &default_loop_struct;	1296	EV_P = signals [signum - 1].loop;
960	#endif	1297	#endif
961		1298
962	#if _WIN32	1299	#if _WIN32
963	signal (signum, ev_sighandler);	1300	signal (signum, ev_sighandler);
964	#endif	1301	#endif
965		1302
966	signals [signum - 1].gotsig = 1;	1303	signals [signum - 1].pending = 1;
967	evpipe_write (EV_A_ &gotsig);	1304	evpipe_write (EV_A_ &sig_pending);
968	}	1305	}
969		1306
970	void noinline	1307	void noinline
971	ev_feed_signal_event (EV_P_ int signum)	1308	ev_feed_signal_event (EV_P_ int signum)
972	{	1309	{
973	WL w;	1310	WL w;
974		1311
		1312	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1313	return;
		1314
		1315	--signum;
		1316
975	#if EV_MULTIPLICITY	1317	#if EV_MULTIPLICITY
976	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 */
977	#endif	1319	/* or, likely more useful, feeding a signal nobody is waiting for */
978		1320
979	--signum;	1321	if (expect_false (signals [signum].loop != EV_A))
980
981	if (signum < 0 || signum >= signalmax)
982	return;	1322	return;
		1323	#endif
983		1324
984	signals [signum].gotsig = 0;	1325	signals [signum].pending = 0;
985		1326
986	for (w = signals [signum].head; w; w = w->next)	1327	for (w = signals [signum].head; w; w = w->next)
987	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1328	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
988	}	1329	}
989		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
990	/*****************************************************************************/	1351	/*****************************************************************************/
991		1352
992	static WL childs [EV_PID_HASHSIZE];	1353	static WL childs [EV_PID_HASHSIZE];
993		1354
994	#ifndef _WIN32	1355	#ifndef _WIN32
…		…
997		1358
998	#ifndef WIFCONTINUED	1359	#ifndef WIFCONTINUED
999	# define WIFCONTINUED(status) 0	1360	# define WIFCONTINUED(status) 0
1000	#endif	1361	#endif
1001		1362
1002	void inline_speed	1363	/* handle a single child status event */
		1364	inline_speed void
1003	child_reap (EV_P_ int chain, int pid, int status)	1365	child_reap (EV_P_ int chain, int pid, int status)
1004	{	1366	{
1005	ev_child *w;	1367	ev_child *w;
1006	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1368	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1007		1369
…		…
1020		1382
1021	#ifndef WCONTINUED	1383	#ifndef WCONTINUED
1022	# define WCONTINUED 0	1384	# define WCONTINUED 0
1023	#endif	1385	#endif
1024		1386
		1387	/* called on sigchld etc., calls waitpid */
1025	static void	1388	static void
1026	childcb (EV_P_ ev_signal *sw, int revents)	1389	childcb (EV_P_ ev_signal *sw, int revents)
1027	{	1390	{
1028	int pid, status;	1391	int pid, status;
1029		1392
…		…
1110	/* kqueue is borked on everything but netbsd apparently */	1473	/* kqueue is borked on everything but netbsd apparently */
1111	/* 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 */
1112	flags &= ~EVBACKEND_KQUEUE;	1475	flags &= ~EVBACKEND_KQUEUE;
1113	#endif	1476	#endif
1114	#ifdef __APPLE__	1477	#ifdef __APPLE__
1115	// flags &= ~EVBACKEND_KQUEUE; for documentation	1478	/* only select works correctly on that "unix-certified" platform */
1116	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 */
1117	#endif	1481	#endif
1118		1482
1119	return flags;	1483	return flags;
1120	}	1484	}
1121		1485
…		…
1135	ev_backend (EV_P)	1499	ev_backend (EV_P)
1136	{	1500	{
1137	return backend;	1501	return backend;
1138	}	1502	}
1139		1503
		1504	#if EV_MINIMAL < 2
1140	unsigned int	1505	unsigned int
1141	ev_loop_count (EV_P)	1506	ev_loop_count (EV_P)
1142	{	1507	{
1143	return loop_count;	1508	return loop_count;
1144	}	1509	}
1145		1510
		1511	unsigned int
		1512	ev_loop_depth (EV_P)
		1513	{
		1514	return loop_depth;
		1515	}
		1516
1146	void	1517	void
1147	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1518	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1148	{	1519	{
1149	io_blocktime = interval;	1520	io_blocktime = interval;
1150	}	1521	}
…		…
1153	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1524	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1154	{	1525	{
1155	timeout_blocktime = interval;	1526	timeout_blocktime = interval;
1156	}	1527	}
1157		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 */
1158	static void noinline	1554	static void noinline
1159	loop_init (EV_P_ unsigned int flags)	1555	loop_init (EV_P_ unsigned int flags)
1160	{	1556	{
1161	if (!backend)	1557	if (!backend)
1162	{	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
1163	#if EV_USE_MONOTONIC	1569	#if EV_USE_MONOTONIC
		1570	if (!have_monotonic)
1164	{	1571	{
1165	struct timespec ts;	1572	struct timespec ts;
		1573
1166	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1574	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1167	have_monotonic = 1;	1575	have_monotonic = 1;
1168	}	1576	}
1169	#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"));
1170		1589
1171	ev_rt_now = ev_time ();	1590	ev_rt_now = ev_time ();
1172	mn_now = get_clock ();	1591	mn_now = get_clock ();
1173	now_floor = mn_now;	1592	now_floor = mn_now;
1174	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
1175		1597
1176	io_blocktime = 0.;	1598	io_blocktime = 0.;
1177	timeout_blocktime = 0.;	1599	timeout_blocktime = 0.;
1178	backend = 0;	1600	backend = 0;
1179	backend_fd = -1;	1601	backend_fd = -1;
1180	gotasync = 0;	1602	sig_pending = 0;
		1603	#if EV_ASYNC_ENABLE
		1604	async_pending = 0;
		1605	#endif
1181	#if EV_USE_INOTIFY	1606	#if EV_USE_INOTIFY
1182	fs_fd = -2;	1607	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1183	#endif	1608	#endif
1184		1609	#if EV_USE_SIGNALFD
1185	/* pid check not overridable via env */	1610	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1186	#ifndef _WIN32
1187	if (flags & EVFLAG_FORKCHECK)
1188	curpid = getpid ();
1189	#endif	1611	#endif
1190
1191	if (!(flags & EVFLAG_NOENV)
1192	&& !enable_secure ()
1193	&& getenv ("LIBEV_FLAGS"))
1194	flags = atoi (getenv ("LIBEV_FLAGS"));
1195		1612
1196	if (!(flags & 0x0000ffffU))	1613	if (!(flags & 0x0000ffffU))
1197	flags |= ev_recommended_backends ();	1614	flags |= ev_recommended_backends ();
1198		1615
1199	#if EV_USE_PORT	1616	#if EV_USE_PORT
…		…
1210	#endif	1627	#endif
1211	#if EV_USE_SELECT	1628	#if EV_USE_SELECT
1212	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1629	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1213	#endif	1630	#endif
1214		1631
		1632	ev_prepare_init (&pending_w, pendingcb);
		1633
1215	ev_init (&pipeev, pipecb);	1634	ev_init (&pipe_w, pipecb);
1216	ev_set_priority (&pipeev, EV_MAXPRI);	1635	ev_set_priority (&pipe_w, EV_MAXPRI);
1217	}	1636	}
1218	}	1637	}
1219		1638
		1639	/* free up a loop structure */
1220	static void noinline	1640	static void noinline
1221	loop_destroy (EV_P)	1641	loop_destroy (EV_P)
1222	{	1642	{
1223	int i;	1643	int i;
1224		1644
1225	if (ev_is_active (&pipeev))	1645	if (ev_is_active (&pipe_w))
1226	{	1646	{
1227	ev_ref (EV_A); /* signal watcher */	1647	/*ev_ref (EV_A);*/
1228	ev_io_stop (EV_A_ &pipeev);	1648	/*ev_io_stop (EV_A_ &pipe_w);*/
1229		1649
1230	#if EV_USE_EVENTFD	1650	#if EV_USE_EVENTFD
1231	if (evfd >= 0)	1651	if (evfd >= 0)
1232	close (evfd);	1652	close (evfd);
1233	#endif	1653	#endif
1234		1654
1235	if (evpipe [0] >= 0)	1655	if (evpipe [0] >= 0)
1236	{	1656	{
1237	close (evpipe [0]);	1657	EV_WIN32_CLOSE_FD (evpipe [0]);
1238	close (evpipe [1]);	1658	EV_WIN32_CLOSE_FD (evpipe [1]);
1239	}	1659	}
1240	}	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
1241		1671
1242	#if EV_USE_INOTIFY	1672	#if EV_USE_INOTIFY
1243	if (fs_fd >= 0)	1673	if (fs_fd >= 0)
1244	close (fs_fd);	1674	close (fs_fd);
1245	#endif	1675	#endif
…		…
1269	#if EV_IDLE_ENABLE	1699	#if EV_IDLE_ENABLE
1270	array_free (idle, [i]);	1700	array_free (idle, [i]);
1271	#endif	1701	#endif
1272	}	1702	}
1273		1703
1274	ev_free (anfds); anfdmax = 0;	1704	ev_free (anfds); anfds = 0; anfdmax = 0;
1275		1705
1276	/* 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);
1277	array_free (fdchange, EMPTY);	1708	array_free (fdchange, EMPTY);
1278	array_free (timer, EMPTY);	1709	array_free (timer, EMPTY);
1279	#if EV_PERIODIC_ENABLE	1710	#if EV_PERIODIC_ENABLE
1280	array_free (periodic, EMPTY);	1711	array_free (periodic, EMPTY);
1281	#endif	1712	#endif
…		…
1290		1721
1291	backend = 0;	1722	backend = 0;
1292	}	1723	}
1293		1724
1294	#if EV_USE_INOTIFY	1725	#if EV_USE_INOTIFY
1295	void inline_size infy_fork (EV_P);	1726	inline_size void infy_fork (EV_P);
1296	#endif	1727	#endif
1297		1728
1298	void inline_size	1729	inline_size void
1299	loop_fork (EV_P)	1730	loop_fork (EV_P)
1300	{	1731	{
1301	#if EV_USE_PORT	1732	#if EV_USE_PORT
1302	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1733	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1303	#endif	1734	#endif
…		…
1309	#endif	1740	#endif
1310	#if EV_USE_INOTIFY	1741	#if EV_USE_INOTIFY
1311	infy_fork (EV_A);	1742	infy_fork (EV_A);
1312	#endif	1743	#endif
1313		1744
1314	if (ev_is_active (&pipeev))	1745	if (ev_is_active (&pipe_w))
1315	{	1746	{
1316	/* this "locks" the handlers against writing to the pipe */	1747	/* this "locks" the handlers against writing to the pipe */
1317	/* while we modify the fd vars */	1748	/* while we modify the fd vars */
1318	gotsig = 1;	1749	sig_pending = 1;
1319	#if EV_ASYNC_ENABLE	1750	#if EV_ASYNC_ENABLE
1320	gotasync = 1;	1751	async_pending = 1;
1321	#endif	1752	#endif
1322		1753
1323	ev_ref (EV_A);	1754	ev_ref (EV_A);
1324	ev_io_stop (EV_A_ &pipeev);	1755	ev_io_stop (EV_A_ &pipe_w);
1325		1756
1326	#if EV_USE_EVENTFD	1757	#if EV_USE_EVENTFD
1327	if (evfd >= 0)	1758	if (evfd >= 0)
1328	close (evfd);	1759	close (evfd);
1329	#endif	1760	#endif
1330		1761
1331	if (evpipe [0] >= 0)	1762	if (evpipe [0] >= 0)
1332	{	1763	{
1333	close (evpipe [0]);	1764	EV_WIN32_CLOSE_FD (evpipe [0]);
1334	close (evpipe [1]);	1765	EV_WIN32_CLOSE_FD (evpipe [1]);
1335	}	1766	}
1336		1767
1337	evpipe_init (EV_A);	1768	evpipe_init (EV_A);
1338	/* now iterate over everything, in case we missed something */	1769	/* now iterate over everything, in case we missed something */
1339	pipecb (EV_A_ &pipeev, EV_READ);	1770	pipecb (EV_A_ &pipe_w, EV_READ);
1340	}	1771	}
1341		1772
1342	postfork = 0;	1773	postfork = 0;
1343	}	1774	}
1344		1775
1345	#if EV_MULTIPLICITY	1776	#if EV_MULTIPLICITY
		1777
1346	struct ev_loop *	1778	struct ev_loop *
1347	ev_loop_new (unsigned int flags)	1779	ev_loop_new (unsigned int flags)
1348	{	1780	{
1349	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));
1350		1782
1351	memset (loop, 0, sizeof (struct ev_loop));	1783	memset (EV_A, 0, sizeof (struct ev_loop));
1352
1353	loop_init (EV_A_ flags);	1784	loop_init (EV_A_ flags);
1354		1785
1355	if (ev_backend (EV_A))	1786	if (ev_backend (EV_A))
1356	return loop;	1787	return EV_A;
1357		1788
1358	return 0;	1789	return 0;
1359	}	1790	}
1360		1791
1361	void	1792	void
…		…
1368	void	1799	void
1369	ev_loop_fork (EV_P)	1800	ev_loop_fork (EV_P)
1370	{	1801	{
1371	postfork = 1; /* must be in line with ev_default_fork */	1802	postfork = 1; /* must be in line with ev_default_fork */
1372	}	1803	}
		1804	#endif /* multiplicity */
1373		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	}
1374	#endif	1905	#endif
1375		1906
1376	#if EV_MULTIPLICITY	1907	#if EV_MULTIPLICITY
1377	struct ev_loop *	1908	struct ev_loop *
1378	ev_default_loop_init (unsigned int flags)	1909	ev_default_loop_init (unsigned int flags)
…		…
1382	#endif	1913	#endif
1383	{	1914	{
1384	if (!ev_default_loop_ptr)	1915	if (!ev_default_loop_ptr)
1385	{	1916	{
1386	#if EV_MULTIPLICITY	1917	#if EV_MULTIPLICITY
1387	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1918	EV_P = ev_default_loop_ptr = &default_loop_struct;
1388	#else	1919	#else
1389	ev_default_loop_ptr = 1;	1920	ev_default_loop_ptr = 1;
1390	#endif	1921	#endif
1391		1922
1392	loop_init (EV_A_ flags);	1923	loop_init (EV_A_ flags);
…		…
1409		1940
1410	void	1941	void
1411	ev_default_destroy (void)	1942	ev_default_destroy (void)
1412	{	1943	{
1413	#if EV_MULTIPLICITY	1944	#if EV_MULTIPLICITY
1414	struct ev_loop *loop = ev_default_loop_ptr;	1945	EV_P = ev_default_loop_ptr;
1415	#endif	1946	#endif
		1947
		1948	ev_default_loop_ptr = 0;
1416		1949
1417	#ifndef _WIN32	1950	#ifndef _WIN32
1418	ev_ref (EV_A); /* child watcher */	1951	ev_ref (EV_A); /* child watcher */
1419	ev_signal_stop (EV_A_ &childev);	1952	ev_signal_stop (EV_A_ &childev);
1420	#endif	1953	#endif
…		…
1424		1957
1425	void	1958	void
1426	ev_default_fork (void)	1959	ev_default_fork (void)
1427	{	1960	{
1428	#if EV_MULTIPLICITY	1961	#if EV_MULTIPLICITY
1429	struct ev_loop *loop = ev_default_loop_ptr;	1962	EV_P = ev_default_loop_ptr;
1430	#endif	1963	#endif
1431		1964
1432	if (backend)
1433	postfork = 1; /* must be in line with ev_loop_fork */	1965	postfork = 1; /* must be in line with ev_loop_fork */
1434	}	1966	}
1435		1967
1436	/*****************************************************************************/	1968	/*****************************************************************************/
1437		1969
1438	void	1970	void
1439	ev_invoke (EV_P_ void *w, int revents)	1971	ev_invoke (EV_P_ void *w, int revents)
1440	{	1972	{
1441	EV_CB_INVOKE ((W)w, revents);	1973	EV_CB_INVOKE ((W)w, revents);
1442	}	1974	}
1443		1975
1444	void inline_speed	1976	unsigned int
1445	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)
1446	{	1990	{
1447	int pri;	1991	int pri;
1448		1992
1449	for (pri = NUMPRI; pri--; )	1993	for (pri = NUMPRI; pri--; )
1450	while (pendingcnt [pri])	1994	while (pendingcnt [pri])
1451	{	1995	{
1452	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1996	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1453		1997
1454	if (expect_true (p->w))
1455	{
1456	/*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 */
1457		2000
1458	p->w->pending = 0;	2001	p->w->pending = 0;
1459	EV_CB_INVOKE (p->w, p->events);	2002	EV_CB_INVOKE (p->w, p->events);
1460	}	2003	EV_FREQUENT_CHECK;
1461	}	2004	}
1462	}	2005	}
1463		2006
1464	void inline_size
1465	timers_reify (EV_P)
1466	{
1467	while (timercnt && ev_at (timers [1]) <= mn_now)
1468	{
1469	ev_timer *w = (ev_timer *)timers [1];
1470
1471	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1472
1473	/* first reschedule or stop timer */
1474	if (w->repeat)
1475	{
1476	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1477
1478	ev_at (w) += w->repeat;
1479	if (ev_at (w) < mn_now)
1480	ev_at (w) = mn_now;
1481
1482	downheap (timers, timercnt, 1);
1483	}
1484	else
1485	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1486
1487	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1488	}
1489	}
1490
1491	#if EV_PERIODIC_ENABLE
1492	void inline_size
1493	periodics_reify (EV_P)
1494	{
1495	while (periodiccnt && ev_at (periodics [1]) <= ev_rt_now)
1496	{
1497	ev_periodic *w = (ev_periodic *)periodics [1];
1498
1499	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1500
1501	/* first reschedule or stop timer */
1502	if (w->reschedule_cb)
1503	{
1504	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1505	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
1506	downheap (periodics, periodiccnt, 1);
1507	}
1508	else if (w->interval)
1509	{
1510	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1511	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1512	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1513	downheap (periodics, periodiccnt, 1);
1514	}
1515	else
1516	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1517
1518	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1519	}
1520	}
1521
1522	static void noinline
1523	periodics_reschedule (EV_P)
1524	{
1525	int i;
1526
1527	/* adjust periodics after time jump */
1528	for (i = 0; i < periodiccnt; ++i)
1529	{
1530	ev_periodic *w = (ev_periodic *)periodics [i];
1531
1532	if (w->reschedule_cb)
1533	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1534	else if (w->interval)
1535	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1536	}
1537
1538	/* now rebuild the heap */
1539	for (i = periodiccnt >> 1; i--; )
1540	downheap (periodics, periodiccnt, i);
1541	}
1542	#endif
1543
1544	#if EV_IDLE_ENABLE	2007	#if EV_IDLE_ENABLE
1545	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
1546	idle_reify (EV_P)	2011	idle_reify (EV_P)
1547	{	2012	{
1548	if (expect_false (idleall))	2013	if (expect_false (idleall))
1549	{	2014	{
1550	int pri;	2015	int pri;
…		…
1562	}	2027	}
1563	}	2028	}
1564	}	2029	}
1565	#endif	2030	#endif
1566		2031
1567	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
1568	time_update (EV_P_ ev_tstamp max_block)	2169	time_update (EV_P_ ev_tstamp max_block)
1569	{	2170	{
1570	int i;
1571
1572	#if EV_USE_MONOTONIC	2171	#if EV_USE_MONOTONIC
1573	if (expect_true (have_monotonic))	2172	if (expect_true (have_monotonic))
1574	{	2173	{
		2174	int i;
1575	ev_tstamp odiff = rtmn_diff;	2175	ev_tstamp odiff = rtmn_diff;
1576		2176
1577	mn_now = get_clock ();	2177	mn_now = get_clock ();
1578		2178
1579	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2179	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1597	*/	2197	*/
1598	for (i = 4; --i; )	2198	for (i = 4; --i; )
1599	{	2199	{
1600	rtmn_diff = ev_rt_now - mn_now;	2200	rtmn_diff = ev_rt_now - mn_now;
1601		2201
1602	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	2202	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1603	return; /* all is well */	2203	return; /* all is well */
1604		2204
1605	ev_rt_now = ev_time ();	2205	ev_rt_now = ev_time ();
1606	mn_now = get_clock ();	2206	mn_now = get_clock ();
1607	now_floor = mn_now;	2207	now_floor = mn_now;
1608	}	2208	}
1609		2209
		2210	/* no timer adjustment, as the monotonic clock doesn't jump */
		2211	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1610	# if EV_PERIODIC_ENABLE	2212	# if EV_PERIODIC_ENABLE
1611	periodics_reschedule (EV_A);	2213	periodics_reschedule (EV_A);
1612	# endif	2214	# endif
1613	/* no timer adjustment, as the monotonic clock doesn't jump */
1614	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1615	}	2215	}
1616	else	2216	else
1617	#endif	2217	#endif
1618	{	2218	{
1619	ev_rt_now = ev_time ();	2219	ev_rt_now = ev_time ();
1620		2220
1621	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))
1622	{	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);
1623	#if EV_PERIODIC_ENABLE	2225	#if EV_PERIODIC_ENABLE
1624	periodics_reschedule (EV_A);	2226	periodics_reschedule (EV_A);
1625	#endif	2227	#endif
1626	/* adjust timers. this is easy, as the offset is the same for all of them */
1627	for (i = 1; i <= timercnt; ++i)
1628	ev_at (timers [i]) += ev_rt_now - mn_now;
1629	}	2228	}
1630		2229
1631	mn_now = ev_rt_now;	2230	mn_now = ev_rt_now;
1632	}	2231	}
1633	}	2232	}
1634		2233
1635	void	2234	void
1636	ev_ref (EV_P)
1637	{
1638	++activecnt;
1639	}
1640
1641	void
1642	ev_unref (EV_P)
1643	{
1644	--activecnt;
1645	}
1646
1647	static int loop_done;
1648
1649	void
1650	ev_loop (EV_P_ int flags)	2235	ev_loop (EV_P_ int flags)
1651	{	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
1652	loop_done = EVUNLOOP_CANCEL;	2243	loop_done = EVUNLOOP_CANCEL;
1653		2244
1654	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 */
1655		2246
1656	do	2247	do
1657	{	2248	{
		2249	#if EV_VERIFY >= 2
		2250	ev_loop_verify (EV_A);
		2251	#endif
		2252
1658	#ifndef _WIN32	2253	#ifndef _WIN32
1659	if (expect_false (curpid)) /* penalise the forking check even more */	2254	if (expect_false (curpid)) /* penalise the forking check even more */
1660	if (expect_false (getpid () != curpid))	2255	if (expect_false (getpid () != curpid))
1661	{	2256	{
1662	curpid = getpid ();	2257	curpid = getpid ();
…		…
1668	/* we might have forked, so queue fork handlers */	2263	/* we might have forked, so queue fork handlers */
1669	if (expect_false (postfork))	2264	if (expect_false (postfork))
1670	if (forkcnt)	2265	if (forkcnt)
1671	{	2266	{
1672	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2267	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1673	call_pending (EV_A);	2268	EV_INVOKE_PENDING;
1674	}	2269	}
1675	#endif	2270	#endif
1676		2271
1677	/* queue prepare watchers (and execute them) */	2272	/* queue prepare watchers (and execute them) */
1678	if (expect_false (preparecnt))	2273	if (expect_false (preparecnt))
1679	{	2274	{
1680	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2275	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1681	call_pending (EV_A);	2276	EV_INVOKE_PENDING;
1682	}	2277	}
1683		2278
1684	if (expect_false (!activecnt))	2279	if (expect_false (loop_done))
1685	break;	2280	break;
1686		2281
1687	/* we might have forked, so reify kernel state if necessary */	2282	/* we might have forked, so reify kernel state if necessary */
1688	if (expect_false (postfork))	2283	if (expect_false (postfork))
1689	loop_fork (EV_A);	2284	loop_fork (EV_A);
…		…
1696	ev_tstamp waittime = 0.;	2291	ev_tstamp waittime = 0.;
1697	ev_tstamp sleeptime = 0.;	2292	ev_tstamp sleeptime = 0.;
1698		2293
1699	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2294	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1700	{	2295	{
		2296	/* remember old timestamp for io_blocktime calculation */
		2297	ev_tstamp prev_mn_now = mn_now;
		2298
1701	/* update time to cancel out callback processing overhead */	2299	/* update time to cancel out callback processing overhead */
1702	time_update (EV_A_ 1e100);	2300	time_update (EV_A_ 1e100);
1703		2301
1704	waittime = MAX_BLOCKTIME;	2302	waittime = MAX_BLOCKTIME;
1705		2303
1706	if (timercnt)	2304	if (timercnt)
1707	{	2305	{
1708	ev_tstamp to = ev_at (timers [1]) - mn_now + backend_fudge;	2306	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1709	if (waittime > to) waittime = to;	2307	if (waittime > to) waittime = to;
1710	}	2308	}
1711		2309
1712	#if EV_PERIODIC_ENABLE	2310	#if EV_PERIODIC_ENABLE
1713	if (periodiccnt)	2311	if (periodiccnt)
1714	{	2312	{
1715	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;
1716	if (waittime > to) waittime = to;	2314	if (waittime > to) waittime = to;
1717	}	2315	}
1718	#endif	2316	#endif
1719		2317
		2318	/* don't let timeouts decrease the waittime below timeout_blocktime */
1720	if (expect_false (waittime < timeout_blocktime))	2319	if (expect_false (waittime < timeout_blocktime))
1721	waittime = timeout_blocktime;	2320	waittime = timeout_blocktime;
1722		2321
1723	sleeptime = waittime - backend_fudge;	2322	/* extra check because io_blocktime is commonly 0 */
1724
1725	if (expect_true (sleeptime > io_blocktime))	2323	if (expect_false (io_blocktime))
1726	sleeptime = io_blocktime;
1727
1728	if (sleeptime)
1729	{	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	{
1730	ev_sleep (sleeptime);	2332	ev_sleep (sleeptime);
1731	waittime -= sleeptime;	2333	waittime -= sleeptime;
		2334	}
1732	}	2335	}
1733	}	2336	}
1734		2337
		2338	#if EV_MINIMAL < 2
1735	++loop_count;	2339	++loop_count;
		2340	#endif
		2341	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1736	backend_poll (EV_A_ waittime);	2342	backend_poll (EV_A_ waittime);
		2343	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1737		2344
1738	/* update ev_rt_now, do magic */	2345	/* update ev_rt_now, do magic */
1739	time_update (EV_A_ waittime + sleeptime);	2346	time_update (EV_A_ waittime + sleeptime);
1740	}	2347	}
1741		2348
…		…
1752		2359
1753	/* queue check watchers, to be executed first */	2360	/* queue check watchers, to be executed first */
1754	if (expect_false (checkcnt))	2361	if (expect_false (checkcnt))
1755	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2362	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1756		2363
1757	call_pending (EV_A);	2364	EV_INVOKE_PENDING;
1758	}	2365	}
1759	while (expect_true (	2366	while (expect_true (
1760	activecnt	2367	activecnt
1761	&& !loop_done	2368	&& !loop_done
1762	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2369	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1763	));	2370	));
1764		2371
1765	if (loop_done == EVUNLOOP_ONE)	2372	if (loop_done == EVUNLOOP_ONE)
1766	loop_done = EVUNLOOP_CANCEL;	2373	loop_done = EVUNLOOP_CANCEL;
		2374
		2375	#if EV_MINIMAL < 2
		2376	--loop_depth;
		2377	#endif
1767	}	2378	}
1768		2379
1769	void	2380	void
1770	ev_unloop (EV_P_ int how)	2381	ev_unloop (EV_P_ int how)
1771	{	2382	{
1772	loop_done = how;	2383	loop_done = how;
1773	}	2384	}
1774		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
1775	/*****************************************************************************/	2423	/*****************************************************************************/
		2424	/* singly-linked list management, used when the expected list length is short */
1776		2425
1777	void inline_size	2426	inline_size void
1778	wlist_add (WL *head, WL elem)	2427	wlist_add (WL *head, WL elem)
1779	{	2428	{
1780	elem->next = *head;	2429	elem->next = *head;
1781	*head = elem;	2430	*head = elem;
1782	}	2431	}
1783		2432
1784	void inline_size	2433	inline_size void
1785	wlist_del (WL *head, WL elem)	2434	wlist_del (WL *head, WL elem)
1786	{	2435	{
1787	while (*head)	2436	while (*head)
1788	{	2437	{
1789	if (*head == elem)	2438	if (expect_true (*head == elem))
1790	{	2439	{
1791	*head = elem->next;	2440	*head = elem->next;
1792	return;	2441	break;
1793	}	2442	}
1794		2443
1795	head = &(*head)->next;	2444	head = &(*head)->next;
1796	}	2445	}
1797	}	2446	}
1798		2447
1799	void inline_speed	2448	/* internal, faster, version of ev_clear_pending */
		2449	inline_speed void
1800	clear_pending (EV_P_ W w)	2450	clear_pending (EV_P_ W w)
1801	{	2451	{
1802	if (w->pending)	2452	if (w->pending)
1803	{	2453	{
1804	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2454	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1805	w->pending = 0;	2455	w->pending = 0;
1806	}	2456	}
1807	}	2457	}
1808		2458
1809	int	2459	int
…		…
1813	int pending = w_->pending;	2463	int pending = w_->pending;
1814		2464
1815	if (expect_true (pending))	2465	if (expect_true (pending))
1816	{	2466	{
1817	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2467	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2468	p->w = (W)&pending_w;
1818	w_->pending = 0;	2469	w_->pending = 0;
1819	p->w = 0;
1820	return p->events;	2470	return p->events;
1821	}	2471	}
1822	else	2472	else
1823	return 0;	2473	return 0;
1824	}	2474	}
1825		2475
1826	void inline_size	2476	inline_size void
1827	pri_adjust (EV_P_ W w)	2477	pri_adjust (EV_P_ W w)
1828	{	2478	{
1829	int pri = w->priority;	2479	int pri = ev_priority (w);
1830	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2480	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1831	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2481	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1832	w->priority = pri;	2482	ev_set_priority (w, pri);
1833	}	2483	}
1834		2484
1835	void inline_speed	2485	inline_speed void
1836	ev_start (EV_P_ W w, int active)	2486	ev_start (EV_P_ W w, int active)
1837	{	2487	{
1838	pri_adjust (EV_A_ w);	2488	pri_adjust (EV_A_ w);
1839	w->active = active;	2489	w->active = active;
1840	ev_ref (EV_A);	2490	ev_ref (EV_A);
1841	}	2491	}
1842		2492
1843	void inline_size	2493	inline_size void
1844	ev_stop (EV_P_ W w)	2494	ev_stop (EV_P_ W w)
1845	{	2495	{
1846	ev_unref (EV_A);	2496	ev_unref (EV_A);
1847	w->active = 0;	2497	w->active = 0;
1848	}	2498	}
…		…
1855	int fd = w->fd;	2505	int fd = w->fd;
1856		2506
1857	if (expect_false (ev_is_active (w)))	2507	if (expect_false (ev_is_active (w)))
1858	return;	2508	return;
1859		2509
1860	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;
1861		2514
1862	ev_start (EV_A_ (W)w, 1);	2515	ev_start (EV_A_ (W)w, 1);
1863	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2516	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1864	wlist_add (&anfds[fd].head, (WL)w);	2517	wlist_add (&anfds[fd].head, (WL)w);
1865		2518
1866	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2519	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1867	w->events &= ~EV_IOFDSET;	2520	w->events &= ~EV__IOFDSET;
		2521
		2522	EV_FREQUENT_CHECK;
1868	}	2523	}
1869		2524
1870	void noinline	2525	void noinline
1871	ev_io_stop (EV_P_ ev_io *w)	2526	ev_io_stop (EV_P_ ev_io *w)
1872	{	2527	{
1873	clear_pending (EV_A_ (W)w);	2528	clear_pending (EV_A_ (W)w);
1874	if (expect_false (!ev_is_active (w)))	2529	if (expect_false (!ev_is_active (w)))
1875	return;	2530	return;
1876		2531
1877	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;
1878		2535
1879	wlist_del (&anfds[w->fd].head, (WL)w);	2536	wlist_del (&anfds[w->fd].head, (WL)w);
1880	ev_stop (EV_A_ (W)w);	2537	ev_stop (EV_A_ (W)w);
1881		2538
1882	fd_change (EV_A_ w->fd, 1);	2539	fd_change (EV_A_ w->fd, 1);
		2540
		2541	EV_FREQUENT_CHECK;
1883	}	2542	}
1884		2543
1885	void noinline	2544	void noinline
1886	ev_timer_start (EV_P_ ev_timer *w)	2545	ev_timer_start (EV_P_ ev_timer *w)
1887	{	2546	{
1888	if (expect_false (ev_is_active (w)))	2547	if (expect_false (ev_is_active (w)))
1889	return;	2548	return;
1890		2549
1891	ev_at (w) += mn_now;	2550	ev_at (w) += mn_now;
1892		2551
1893	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.));
1894		2553
		2554	EV_FREQUENT_CHECK;
		2555
		2556	++timercnt;
1895	ev_start (EV_A_ (W)w, ++timercnt);	2557	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1896	array_needsize (WT, timers, timermax, timercnt + 1, EMPTY2);	2558	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1897	timers [timercnt] = (WT)w;	2559	ANHE_w (timers [ev_active (w)]) = (WT)w;
		2560	ANHE_at_cache (timers [ev_active (w)]);
1898	upheap (timers, timercnt);	2561	upheap (timers, ev_active (w));
1899		2562
		2563	EV_FREQUENT_CHECK;
		2564
1900	/*assert (("internal timer heap corruption", timers [((W)w)->active] == w));*/	2565	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1901	}	2566	}
1902		2567
1903	void noinline	2568	void noinline
1904	ev_timer_stop (EV_P_ ev_timer *w)	2569	ev_timer_stop (EV_P_ ev_timer *w)
1905	{	2570	{
1906	clear_pending (EV_A_ (W)w);	2571	clear_pending (EV_A_ (W)w);
1907	if (expect_false (!ev_is_active (w)))	2572	if (expect_false (!ev_is_active (w)))
1908	return;	2573	return;
1909		2574
1910	assert (("internal timer heap corruption", timers [((W)w)->active] == (WT)w));	2575	EV_FREQUENT_CHECK;
1911		2576
1912	{	2577	{
1913	int active = ((W)w)->active;	2578	int active = ev_active (w);
1914		2579
		2580	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2581
		2582	--timercnt;
		2583
1915	if (expect_true (active < timercnt))	2584	if (expect_true (active < timercnt + HEAP0))
1916	{	2585	{
1917	timers [active] = timers [timercnt];	2586	timers [active] = timers [timercnt + HEAP0];
1918	adjustheap (timers, timercnt, active);	2587	adjustheap (timers, timercnt, active);
1919	}	2588	}
1920
1921	--timercnt;
1922	}	2589	}
		2590
		2591	EV_FREQUENT_CHECK;
1923		2592
1924	ev_at (w) -= mn_now;	2593	ev_at (w) -= mn_now;
1925		2594
1926	ev_stop (EV_A_ (W)w);	2595	ev_stop (EV_A_ (W)w);
1927	}	2596	}
1928		2597
1929	void noinline	2598	void noinline
1930	ev_timer_again (EV_P_ ev_timer *w)	2599	ev_timer_again (EV_P_ ev_timer *w)
1931	{	2600	{
		2601	EV_FREQUENT_CHECK;
		2602
1932	if (ev_is_active (w))	2603	if (ev_is_active (w))
1933	{	2604	{
1934	if (w->repeat)	2605	if (w->repeat)
1935	{	2606	{
1936	ev_at (w) = mn_now + w->repeat;	2607	ev_at (w) = mn_now + w->repeat;
		2608	ANHE_at_cache (timers [ev_active (w)]);
1937	adjustheap (timers, timercnt, ((W)w)->active);	2609	adjustheap (timers, timercnt, ev_active (w));
1938	}	2610	}
1939	else	2611	else
1940	ev_timer_stop (EV_A_ w);	2612	ev_timer_stop (EV_A_ w);
1941	}	2613	}
1942	else if (w->repeat)	2614	else if (w->repeat)
1943	{	2615	{
1944	ev_at (w) = w->repeat;	2616	ev_at (w) = w->repeat;
1945	ev_timer_start (EV_A_ w);	2617	ev_timer_start (EV_A_ w);
1946	}	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.);
1947	}	2627	}
1948		2628
1949	#if EV_PERIODIC_ENABLE	2629	#if EV_PERIODIC_ENABLE
1950	void noinline	2630	void noinline
1951	ev_periodic_start (EV_P_ ev_periodic *w)	2631	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
1955		2635
1956	if (w->reschedule_cb)	2636	if (w->reschedule_cb)
1957	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2637	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1958	else if (w->interval)	2638	else if (w->interval)
1959	{	2639	{
1960	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.));
1961	/* 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 */
1962	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;
1963	}	2643	}
1964	else	2644	else
1965	ev_at (w) = w->offset;	2645	ev_at (w) = w->offset;
1966		2646
		2647	EV_FREQUENT_CHECK;
		2648
		2649	++periodiccnt;
1967	ev_start (EV_A_ (W)w, ++periodiccnt);	2650	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1968	array_needsize (WT, periodics, periodicmax, periodiccnt + 1, EMPTY2);	2651	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1969	periodics [periodiccnt] = (WT)w;	2652	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1970	upheap (periodics, periodiccnt);	2653	ANHE_at_cache (periodics [ev_active (w)]);
		2654	upheap (periodics, ev_active (w));
1971		2655
		2656	EV_FREQUENT_CHECK;
		2657
1972	/*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));*/
1973	}	2659	}
1974		2660
1975	void noinline	2661	void noinline
1976	ev_periodic_stop (EV_P_ ev_periodic *w)	2662	ev_periodic_stop (EV_P_ ev_periodic *w)
1977	{	2663	{
1978	clear_pending (EV_A_ (W)w);	2664	clear_pending (EV_A_ (W)w);
1979	if (expect_false (!ev_is_active (w)))	2665	if (expect_false (!ev_is_active (w)))
1980	return;	2666	return;
1981		2667
1982	assert (("internal periodic heap corruption", periodics [((W)w)->active] == (WT)w));	2668	EV_FREQUENT_CHECK;
1983		2669
1984	{	2670	{
1985	int active = ((W)w)->active;	2671	int active = ev_active (w);
1986		2672
		2673	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2674
		2675	--periodiccnt;
		2676
1987	if (expect_true (active < periodiccnt))	2677	if (expect_true (active < periodiccnt + HEAP0))
1988	{	2678	{
1989	periodics [active] = periodics [periodiccnt];	2679	periodics [active] = periodics [periodiccnt + HEAP0];
1990	adjustheap (periodics, periodiccnt, active);	2680	adjustheap (periodics, periodiccnt, active);
1991	}	2681	}
1992
1993	--periodiccnt;
1994	}	2682	}
		2683
		2684	EV_FREQUENT_CHECK;
1995		2685
1996	ev_stop (EV_A_ (W)w);	2686	ev_stop (EV_A_ (W)w);
1997	}	2687	}
1998		2688
1999	void noinline	2689	void noinline
…		…
2010	#endif	2700	#endif
2011		2701
2012	void noinline	2702	void noinline
2013	ev_signal_start (EV_P_ ev_signal *w)	2703	ev_signal_start (EV_P_ ev_signal *w)
2014	{	2704	{
2015	#if EV_MULTIPLICITY
2016	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2017	#endif
2018	if (expect_false (ev_is_active (w)))	2705	if (expect_false (ev_is_active (w)))
2019	return;	2706	return;
2020		2707
2021	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));
2022		2709
2023	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));
2024		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)
2025	{	2721	{
2026	#ifndef _WIN32	2722	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2027	sigset_t full, prev;	2723	if (sigfd < 0 && errno == EINVAL)
2028	sigfillset (&full);	2724	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2029	sigprocmask (SIG_SETMASK, &full, &prev);
2030	#endif
2031		2725
2032	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2726	if (sigfd >= 0)
		2727	{
		2728	fd_intern (sigfd); /* doing it twice will not hurt */
2033		2729
2034	#ifndef _WIN32	2730	sigemptyset (&sigfd_set);
2035	sigprocmask (SIG_SETMASK, &prev, 0);	2731
2036	#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	}
2037	}	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
2038		2748
2039	ev_start (EV_A_ (W)w, 1);	2749	ev_start (EV_A_ (W)w, 1);
2040	wlist_add (&signals [w->signum - 1].head, (WL)w);	2750	wlist_add (&signals [w->signum - 1].head, (WL)w);
2041		2751
2042	if (!((WL)w)->next)	2752	if (!((WL)w)->next)
		2753	# if EV_USE_SIGNALFD
		2754	if (sigfd < 0) /*TODO*/
		2755	# endif
2043	{	2756	{
2044	#if _WIN32	2757	# if _WIN32
2045	signal (w->signum, ev_sighandler);	2758	signal (w->signum, ev_sighandler);
2046	#else	2759	# else
2047	struct sigaction sa;	2760	struct sigaction sa;
		2761
		2762	evpipe_init (EV_A);
		2763
2048	sa.sa_handler = ev_sighandler;	2764	sa.sa_handler = ev_sighandler;
2049	sigfillset (&sa.sa_mask);	2765	sigfillset (&sa.sa_mask);
2050	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 */
2051	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);
2052	#endif	2772	#endif
2053	}	2773	}
		2774
		2775	EV_FREQUENT_CHECK;
2054	}	2776	}
2055		2777
2056	void noinline	2778	void noinline
2057	ev_signal_stop (EV_P_ ev_signal *w)	2779	ev_signal_stop (EV_P_ ev_signal *w)
2058	{	2780	{
2059	clear_pending (EV_A_ (W)w);	2781	clear_pending (EV_A_ (W)w);
2060	if (expect_false (!ev_is_active (w)))	2782	if (expect_false (!ev_is_active (w)))
2061	return;	2783	return;
2062		2784
		2785	EV_FREQUENT_CHECK;
		2786
2063	wlist_del (&signals [w->signum - 1].head, (WL)w);	2787	wlist_del (&signals [w->signum - 1].head, (WL)w);
2064	ev_stop (EV_A_ (W)w);	2788	ev_stop (EV_A_ (W)w);
2065		2789
2066	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
2067	signal (w->signum, SIG_DFL);	2806	signal (w->signum, SIG_DFL);
		2807	}
		2808
		2809	EV_FREQUENT_CHECK;
2068	}	2810	}
2069		2811
2070	void	2812	void
2071	ev_child_start (EV_P_ ev_child *w)	2813	ev_child_start (EV_P_ ev_child *w)
2072	{	2814	{
2073	#if EV_MULTIPLICITY	2815	#if EV_MULTIPLICITY
2074	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));
2075	#endif	2817	#endif
2076	if (expect_false (ev_is_active (w)))	2818	if (expect_false (ev_is_active (w)))
2077	return;	2819	return;
2078		2820
		2821	EV_FREQUENT_CHECK;
		2822
2079	ev_start (EV_A_ (W)w, 1);	2823	ev_start (EV_A_ (W)w, 1);
2080	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;
2081	}	2827	}
2082		2828
2083	void	2829	void
2084	ev_child_stop (EV_P_ ev_child *w)	2830	ev_child_stop (EV_P_ ev_child *w)
2085	{	2831	{
2086	clear_pending (EV_A_ (W)w);	2832	clear_pending (EV_A_ (W)w);
2087	if (expect_false (!ev_is_active (w)))	2833	if (expect_false (!ev_is_active (w)))
2088	return;	2834	return;
2089		2835
		2836	EV_FREQUENT_CHECK;
		2837
2090	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2838	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2091	ev_stop (EV_A_ (W)w);	2839	ev_stop (EV_A_ (W)w);
		2840
		2841	EV_FREQUENT_CHECK;
2092	}	2842	}
2093		2843
2094	#if EV_STAT_ENABLE	2844	#if EV_STAT_ENABLE
2095		2845
2096	# ifdef _WIN32	2846	# ifdef _WIN32
2097	# undef lstat	2847	# undef lstat
2098	# define lstat(a,b) _stati64 (a,b)	2848	# define lstat(a,b) _stati64 (a,b)
2099	# endif	2849	# endif
2100		2850
2101	#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 */
2102	#define MIN_STAT_INTERVAL 0.1074891	2853	#define MIN_STAT_INTERVAL 0.1074891
2103		2854
2104	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);
2105		2856
2106	#if EV_USE_INOTIFY	2857	#if EV_USE_INOTIFY
2107	# define EV_INOTIFY_BUFSIZE 8192	2858	# define EV_INOTIFY_BUFSIZE 8192
…		…
2111	{	2862	{
2112	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);
2113		2864
2114	if (w->wd < 0)	2865	if (w->wd < 0)
2115	{	2866	{
		2867	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2116	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 */
2117		2869
2118	/* 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 */
2119	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2873	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2120	{	2874	{
2121	char path [4096];	2875	char path [4096];
2122	strcpy (path, w->path);	2876	strcpy (path, w->path);
2123		2877
…		…
2126	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2880	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2127	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2881	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2128		2882
2129	char *pend = strrchr (path, '/');	2883	char *pend = strrchr (path, '/');
2130		2884
2131	if (!pend)	2885	if (!pend || pend == path)
2132	break; /* whoops, no '/', complain to your admin */	2886	break;
2133		2887
2134	*pend = 0;	2888	*pend = 0;
2135	w->wd = inotify_add_watch (fs_fd, path, mask);	2889	w->wd = inotify_add_watch (fs_fd, path, mask);
2136	}	2890	}
2137	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2891	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2138	}	2892	}
2139	}	2893	}
2140	else
2141	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2142		2894
2143	if (w->wd >= 0)	2895	if (w->wd >= 0)
		2896	{
		2897	struct statfs sfs;
		2898
2144	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	}
2145	}	2917	}
2146		2918
2147	static void noinline	2919	static void noinline
2148	infy_del (EV_P_ ev_stat *w)	2920	infy_del (EV_P_ ev_stat *w)
2149	{	2921	{
…		…
2163		2935
2164	static void noinline	2936	static void noinline
2165	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)
2166	{	2938	{
2167	if (slot < 0)	2939	if (slot < 0)
2168	/* overflow, need to check for all hahs slots */	2940	/* overflow, need to check for all hash slots */
2169	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2941	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2170	infy_wd (EV_A_ slot, wd, ev);	2942	infy_wd (EV_A_ slot, wd, ev);
2171	else	2943	else
2172	{	2944	{
2173	WL w_;	2945	WL w_;
…		…
2179		2951
2180	if (w->wd == wd || wd == -1)	2952	if (w->wd == wd || wd == -1)
2181	{	2953	{
2182	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2954	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2183	{	2955	{
		2956	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2184	w->wd = -1;	2957	w->wd = -1;
2185	infy_add (EV_A_ w); /* re-add, no matter what */	2958	infy_add (EV_A_ w); /* re-add, no matter what */
2186	}	2959	}
2187		2960
2188	stat_timer_cb (EV_A_ &w->timer, 0);	2961	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2201		2974
2202	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)
2203	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2976	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2204	}	2977	}
2205		2978
2206	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
2207	infy_init (EV_P)	3014	infy_init (EV_P)
2208	{	3015	{
2209	if (fs_fd != -2)	3016	if (fs_fd != -2)
2210	return;	3017	return;
2211		3018
		3019	fs_fd = -1;
		3020
		3021	check_2625 (EV_A);
		3022
2212	fs_fd = inotify_init ();	3023	fs_fd = infy_newfd ();
2213		3024
2214	if (fs_fd >= 0)	3025	if (fs_fd >= 0)
2215	{	3026	{
		3027	fd_intern (fs_fd);
2216	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3028	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2217	ev_set_priority (&fs_w, EV_MAXPRI);	3029	ev_set_priority (&fs_w, EV_MAXPRI);
2218	ev_io_start (EV_A_ &fs_w);	3030	ev_io_start (EV_A_ &fs_w);
2219	}	3031	}
2220	}	3032	}
2221		3033
2222	void inline_size	3034	inline_size void
2223	infy_fork (EV_P)	3035	infy_fork (EV_P)
2224	{	3036	{
2225	int slot;	3037	int slot;
2226		3038
2227	if (fs_fd < 0)	3039	if (fs_fd < 0)
2228	return;	3040	return;
2229		3041
		3042	ev_io_stop (EV_A_ &fs_w);
2230	close (fs_fd);	3043	close (fs_fd);
2231	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	}
2232		3052
2233	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3053	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2234	{	3054	{
2235	WL w_ = fs_hash [slot].head;	3055	WL w_ = fs_hash [slot].head;
2236	fs_hash [slot].head = 0;	3056	fs_hash [slot].head = 0;
…		…
2243	w->wd = -1;	3063	w->wd = -1;
2244		3064
2245	if (fs_fd >= 0)	3065	if (fs_fd >= 0)
2246	infy_add (EV_A_ w); /* re-add, no matter what */	3066	infy_add (EV_A_ w); /* re-add, no matter what */
2247	else	3067	else
2248	ev_timer_start (EV_A_ &w->timer);	3068	ev_timer_again (EV_A_ &w->timer);
2249	}	3069	}
2250
2251	}	3070	}
2252	}	3071	}
2253		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)
2254	#endif	3079	#endif
2255		3080
2256	void	3081	void
2257	ev_stat_stat (EV_P_ ev_stat *w)	3082	ev_stat_stat (EV_P_ ev_stat *w)
2258	{	3083	{
…		…
2285	|| w->prev.st_atime != w->attr.st_atime	3110	|| w->prev.st_atime != w->attr.st_atime
2286	|| w->prev.st_mtime != w->attr.st_mtime	3111	|| w->prev.st_mtime != w->attr.st_mtime
2287	|| w->prev.st_ctime != w->attr.st_ctime	3112	|| w->prev.st_ctime != w->attr.st_ctime
2288	) {	3113	) {
2289	#if EV_USE_INOTIFY	3114	#if EV_USE_INOTIFY
		3115	if (fs_fd >= 0)
		3116	{
2290	infy_del (EV_A_ w);	3117	infy_del (EV_A_ w);
2291	infy_add (EV_A_ w);	3118	infy_add (EV_A_ w);
2292	ev_stat_stat (EV_A_ w); /* avoid race... */	3119	ev_stat_stat (EV_A_ w); /* avoid race... */
		3120	}
2293	#endif	3121	#endif
2294		3122
2295	ev_feed_event (EV_A_ w, EV_STAT);	3123	ev_feed_event (EV_A_ w, EV_STAT);
2296	}	3124	}
2297	}	3125	}
…		…
2300	ev_stat_start (EV_P_ ev_stat *w)	3128	ev_stat_start (EV_P_ ev_stat *w)
2301	{	3129	{
2302	if (expect_false (ev_is_active (w)))	3130	if (expect_false (ev_is_active (w)))
2303	return;	3131	return;
2304		3132
2305	/* since we use memcmp, we need to clear any padding data etc. */
2306	memset (&w->prev, 0, sizeof (ev_statdata));
2307	memset (&w->attr, 0, sizeof (ev_statdata));
2308
2309	ev_stat_stat (EV_A_ w);	3133	ev_stat_stat (EV_A_ w);
2310		3134
		3135	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2311	if (w->interval < MIN_STAT_INTERVAL)	3136	w->interval = MIN_STAT_INTERVAL;
2312	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2313		3137
2314	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);
2315	ev_set_priority (&w->timer, ev_priority (w));	3139	ev_set_priority (&w->timer, ev_priority (w));
2316		3140
2317	#if EV_USE_INOTIFY	3141	#if EV_USE_INOTIFY
2318	infy_init (EV_A);	3142	infy_init (EV_A);
2319		3143
2320	if (fs_fd >= 0)	3144	if (fs_fd >= 0)
2321	infy_add (EV_A_ w);	3145	infy_add (EV_A_ w);
2322	else	3146	else
2323	#endif	3147	#endif
2324	ev_timer_start (EV_A_ &w->timer);	3148	ev_timer_again (EV_A_ &w->timer);
2325		3149
2326	ev_start (EV_A_ (W)w, 1);	3150	ev_start (EV_A_ (W)w, 1);
		3151
		3152	EV_FREQUENT_CHECK;
2327	}	3153	}
2328		3154
2329	void	3155	void
2330	ev_stat_stop (EV_P_ ev_stat *w)	3156	ev_stat_stop (EV_P_ ev_stat *w)
2331	{	3157	{
2332	clear_pending (EV_A_ (W)w);	3158	clear_pending (EV_A_ (W)w);
2333	if (expect_false (!ev_is_active (w)))	3159	if (expect_false (!ev_is_active (w)))
2334	return;	3160	return;
2335		3161
		3162	EV_FREQUENT_CHECK;
		3163
2336	#if EV_USE_INOTIFY	3164	#if EV_USE_INOTIFY
2337	infy_del (EV_A_ w);	3165	infy_del (EV_A_ w);
2338	#endif	3166	#endif
2339	ev_timer_stop (EV_A_ &w->timer);	3167	ev_timer_stop (EV_A_ &w->timer);
2340		3168
2341	ev_stop (EV_A_ (W)w);	3169	ev_stop (EV_A_ (W)w);
		3170
		3171	EV_FREQUENT_CHECK;
2342	}	3172	}
2343	#endif	3173	#endif
2344		3174
2345	#if EV_IDLE_ENABLE	3175	#if EV_IDLE_ENABLE
2346	void	3176	void
…		…
2348	{	3178	{
2349	if (expect_false (ev_is_active (w)))	3179	if (expect_false (ev_is_active (w)))
2350	return;	3180	return;
2351		3181
2352	pri_adjust (EV_A_ (W)w);	3182	pri_adjust (EV_A_ (W)w);
		3183
		3184	EV_FREQUENT_CHECK;
2353		3185
2354	{	3186	{
2355	int active = ++idlecnt [ABSPRI (w)];	3187	int active = ++idlecnt [ABSPRI (w)];
2356		3188
2357	++idleall;	3189	++idleall;
2358	ev_start (EV_A_ (W)w, active);	3190	ev_start (EV_A_ (W)w, active);
2359		3191
2360	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);
2361	idles [ABSPRI (w)][active - 1] = w;	3193	idles [ABSPRI (w)][active - 1] = w;
2362	}	3194	}
		3195
		3196	EV_FREQUENT_CHECK;
2363	}	3197	}
2364		3198
2365	void	3199	void
2366	ev_idle_stop (EV_P_ ev_idle *w)	3200	ev_idle_stop (EV_P_ ev_idle *w)
2367	{	3201	{
2368	clear_pending (EV_A_ (W)w);	3202	clear_pending (EV_A_ (W)w);
2369	if (expect_false (!ev_is_active (w)))	3203	if (expect_false (!ev_is_active (w)))
2370	return;	3204	return;
2371		3205
		3206	EV_FREQUENT_CHECK;
		3207
2372	{	3208	{
2373	int active = ((W)w)->active;	3209	int active = ev_active (w);
2374		3210
2375	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3211	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2376	((W)idles [ABSPRI (w)][active - 1])->active = active;	3212	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2377		3213
2378	ev_stop (EV_A_ (W)w);	3214	ev_stop (EV_A_ (W)w);
2379	--idleall;	3215	--idleall;
2380	}	3216	}
		3217
		3218	EV_FREQUENT_CHECK;
2381	}	3219	}
2382	#endif	3220	#endif
2383		3221
2384	void	3222	void
2385	ev_prepare_start (EV_P_ ev_prepare *w)	3223	ev_prepare_start (EV_P_ ev_prepare *w)
2386	{	3224	{
2387	if (expect_false (ev_is_active (w)))	3225	if (expect_false (ev_is_active (w)))
2388	return;	3226	return;
		3227
		3228	EV_FREQUENT_CHECK;
2389		3229
2390	ev_start (EV_A_ (W)w, ++preparecnt);	3230	ev_start (EV_A_ (W)w, ++preparecnt);
2391	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3231	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2392	prepares [preparecnt - 1] = w;	3232	prepares [preparecnt - 1] = w;
		3233
		3234	EV_FREQUENT_CHECK;
2393	}	3235	}
2394		3236
2395	void	3237	void
2396	ev_prepare_stop (EV_P_ ev_prepare *w)	3238	ev_prepare_stop (EV_P_ ev_prepare *w)
2397	{	3239	{
2398	clear_pending (EV_A_ (W)w);	3240	clear_pending (EV_A_ (W)w);
2399	if (expect_false (!ev_is_active (w)))	3241	if (expect_false (!ev_is_active (w)))
2400	return;	3242	return;
2401		3243
		3244	EV_FREQUENT_CHECK;
		3245
2402	{	3246	{
2403	int active = ((W)w)->active;	3247	int active = ev_active (w);
		3248
2404	prepares [active - 1] = prepares [--preparecnt];	3249	prepares [active - 1] = prepares [--preparecnt];
2405	((W)prepares [active - 1])->active = active;	3250	ev_active (prepares [active - 1]) = active;
2406	}	3251	}
2407		3252
2408	ev_stop (EV_A_ (W)w);	3253	ev_stop (EV_A_ (W)w);
		3254
		3255	EV_FREQUENT_CHECK;
2409	}	3256	}
2410		3257
2411	void	3258	void
2412	ev_check_start (EV_P_ ev_check *w)	3259	ev_check_start (EV_P_ ev_check *w)
2413	{	3260	{
2414	if (expect_false (ev_is_active (w)))	3261	if (expect_false (ev_is_active (w)))
2415	return;	3262	return;
		3263
		3264	EV_FREQUENT_CHECK;
2416		3265
2417	ev_start (EV_A_ (W)w, ++checkcnt);	3266	ev_start (EV_A_ (W)w, ++checkcnt);
2418	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3267	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2419	checks [checkcnt - 1] = w;	3268	checks [checkcnt - 1] = w;
		3269
		3270	EV_FREQUENT_CHECK;
2420	}	3271	}
2421		3272
2422	void	3273	void
2423	ev_check_stop (EV_P_ ev_check *w)	3274	ev_check_stop (EV_P_ ev_check *w)
2424	{	3275	{
2425	clear_pending (EV_A_ (W)w);	3276	clear_pending (EV_A_ (W)w);
2426	if (expect_false (!ev_is_active (w)))	3277	if (expect_false (!ev_is_active (w)))
2427	return;	3278	return;
2428		3279
		3280	EV_FREQUENT_CHECK;
		3281
2429	{	3282	{
2430	int active = ((W)w)->active;	3283	int active = ev_active (w);
		3284
2431	checks [active - 1] = checks [--checkcnt];	3285	checks [active - 1] = checks [--checkcnt];
2432	((W)checks [active - 1])->active = active;	3286	ev_active (checks [active - 1]) = active;
2433	}	3287	}
2434		3288
2435	ev_stop (EV_A_ (W)w);	3289	ev_stop (EV_A_ (W)w);
		3290
		3291	EV_FREQUENT_CHECK;
2436	}	3292	}
2437		3293
2438	#if EV_EMBED_ENABLE	3294	#if EV_EMBED_ENABLE
2439	void noinline	3295	void noinline
2440	ev_embed_sweep (EV_P_ ev_embed *w)	3296	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2457	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3313	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2458	{	3314	{
2459	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3315	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2460		3316
2461	{	3317	{
2462	struct ev_loop *loop = w->other;	3318	EV_P = w->other;
2463		3319
2464	while (fdchangecnt)	3320	while (fdchangecnt)
2465	{	3321	{
2466	fd_reify (EV_A);	3322	fd_reify (EV_A);
2467	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3323	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2468	}	3324	}
2469	}	3325	}
2470	}	3326	}
2471		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
2472	#if 0	3345	#if 0
2473	static void	3346	static void
2474	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3347	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2475	{	3348	{
2476	ev_idle_stop (EV_A_ idle);	3349	ev_idle_stop (EV_A_ idle);
…		…
2482	{	3355	{
2483	if (expect_false (ev_is_active (w)))	3356	if (expect_false (ev_is_active (w)))
2484	return;	3357	return;
2485		3358
2486	{	3359	{
2487	struct ev_loop *loop = w->other;	3360	EV_P = w->other;
2488	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 ()));
2489	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);
2490	}	3363	}
		3364
		3365	EV_FREQUENT_CHECK;
2491		3366
2492	ev_set_priority (&w->io, ev_priority (w));	3367	ev_set_priority (&w->io, ev_priority (w));
2493	ev_io_start (EV_A_ &w->io);	3368	ev_io_start (EV_A_ &w->io);
2494		3369
2495	ev_prepare_init (&w->prepare, embed_prepare_cb);	3370	ev_prepare_init (&w->prepare, embed_prepare_cb);
2496	ev_set_priority (&w->prepare, EV_MINPRI);	3371	ev_set_priority (&w->prepare, EV_MINPRI);
2497	ev_prepare_start (EV_A_ &w->prepare);	3372	ev_prepare_start (EV_A_ &w->prepare);
2498		3373
		3374	ev_fork_init (&w->fork, embed_fork_cb);
		3375	ev_fork_start (EV_A_ &w->fork);
		3376
2499	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3377	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2500		3378
2501	ev_start (EV_A_ (W)w, 1);	3379	ev_start (EV_A_ (W)w, 1);
		3380
		3381	EV_FREQUENT_CHECK;
2502	}	3382	}
2503		3383
2504	void	3384	void
2505	ev_embed_stop (EV_P_ ev_embed *w)	3385	ev_embed_stop (EV_P_ ev_embed *w)
2506	{	3386	{
2507	clear_pending (EV_A_ (W)w);	3387	clear_pending (EV_A_ (W)w);
2508	if (expect_false (!ev_is_active (w)))	3388	if (expect_false (!ev_is_active (w)))
2509	return;	3389	return;
2510		3390
		3391	EV_FREQUENT_CHECK;
		3392
2511	ev_io_stop (EV_A_ &w->io);	3393	ev_io_stop (EV_A_ &w->io);
2512	ev_prepare_stop (EV_A_ &w->prepare);	3394	ev_prepare_stop (EV_A_ &w->prepare);
		3395	ev_fork_stop (EV_A_ &w->fork);
2513		3396
2514	ev_stop (EV_A_ (W)w);	3397	EV_FREQUENT_CHECK;
2515	}	3398	}
2516	#endif	3399	#endif
2517		3400
2518	#if EV_FORK_ENABLE	3401	#if EV_FORK_ENABLE
2519	void	3402	void
2520	ev_fork_start (EV_P_ ev_fork *w)	3403	ev_fork_start (EV_P_ ev_fork *w)
2521	{	3404	{
2522	if (expect_false (ev_is_active (w)))	3405	if (expect_false (ev_is_active (w)))
2523	return;	3406	return;
		3407
		3408	EV_FREQUENT_CHECK;
2524		3409
2525	ev_start (EV_A_ (W)w, ++forkcnt);	3410	ev_start (EV_A_ (W)w, ++forkcnt);
2526	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3411	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2527	forks [forkcnt - 1] = w;	3412	forks [forkcnt - 1] = w;
		3413
		3414	EV_FREQUENT_CHECK;
2528	}	3415	}
2529		3416
2530	void	3417	void
2531	ev_fork_stop (EV_P_ ev_fork *w)	3418	ev_fork_stop (EV_P_ ev_fork *w)
2532	{	3419	{
2533	clear_pending (EV_A_ (W)w);	3420	clear_pending (EV_A_ (W)w);
2534	if (expect_false (!ev_is_active (w)))	3421	if (expect_false (!ev_is_active (w)))
2535	return;	3422	return;
2536		3423
		3424	EV_FREQUENT_CHECK;
		3425
2537	{	3426	{
2538	int active = ((W)w)->active;	3427	int active = ev_active (w);
		3428
2539	forks [active - 1] = forks [--forkcnt];	3429	forks [active - 1] = forks [--forkcnt];
2540	((W)forks [active - 1])->active = active;	3430	ev_active (forks [active - 1]) = active;
2541	}	3431	}
2542		3432
2543	ev_stop (EV_A_ (W)w);	3433	ev_stop (EV_A_ (W)w);
		3434
		3435	EV_FREQUENT_CHECK;
2544	}	3436	}
2545	#endif	3437	#endif
2546		3438
2547	#if EV_ASYNC_ENABLE	3439	#if EV_ASYNC_ENABLE
2548	void	3440	void
…		…
2550	{	3442	{
2551	if (expect_false (ev_is_active (w)))	3443	if (expect_false (ev_is_active (w)))
2552	return;	3444	return;
2553		3445
2554	evpipe_init (EV_A);	3446	evpipe_init (EV_A);
		3447
		3448	EV_FREQUENT_CHECK;
2555		3449
2556	ev_start (EV_A_ (W)w, ++asynccnt);	3450	ev_start (EV_A_ (W)w, ++asynccnt);
2557	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3451	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2558	asyncs [asynccnt - 1] = w;	3452	asyncs [asynccnt - 1] = w;
		3453
		3454	EV_FREQUENT_CHECK;
2559	}	3455	}
2560		3456
2561	void	3457	void
2562	ev_async_stop (EV_P_ ev_async *w)	3458	ev_async_stop (EV_P_ ev_async *w)
2563	{	3459	{
2564	clear_pending (EV_A_ (W)w);	3460	clear_pending (EV_A_ (W)w);
2565	if (expect_false (!ev_is_active (w)))	3461	if (expect_false (!ev_is_active (w)))
2566	return;	3462	return;
2567		3463
		3464	EV_FREQUENT_CHECK;
		3465
2568	{	3466	{
2569	int active = ((W)w)->active;	3467	int active = ev_active (w);
		3468
2570	asyncs [active - 1] = asyncs [--asynccnt];	3469	asyncs [active - 1] = asyncs [--asynccnt];
2571	((W)asyncs [active - 1])->active = active;	3470	ev_active (asyncs [active - 1]) = active;
2572	}	3471	}
2573		3472
2574	ev_stop (EV_A_ (W)w);	3473	ev_stop (EV_A_ (W)w);
		3474
		3475	EV_FREQUENT_CHECK;
2575	}	3476	}
2576		3477
2577	void	3478	void
2578	ev_async_send (EV_P_ ev_async *w)	3479	ev_async_send (EV_P_ ev_async *w)
2579	{	3480	{
2580	w->sent = 1;	3481	w->sent = 1;
2581	evpipe_write (EV_A_ &gotasync);	3482	evpipe_write (EV_A_ &async_pending);
2582	}	3483	}
2583	#endif	3484	#endif
2584		3485
2585	/*****************************************************************************/	3486	/*****************************************************************************/
2586		3487
…		…
2596	once_cb (EV_P_ struct ev_once *once, int revents)	3497	once_cb (EV_P_ struct ev_once *once, int revents)
2597	{	3498	{
2598	void (*cb)(int revents, void *arg) = once->cb;	3499	void (*cb)(int revents, void *arg) = once->cb;
2599	void *arg = once->arg;	3500	void *arg = once->arg;
2600		3501
2601	ev_io_stop (EV_A_ &once->io);	3502	ev_io_stop (EV_A_ &once->io);
2602	ev_timer_stop (EV_A_ &once->to);	3503	ev_timer_stop (EV_A_ &once->to);
2603	ev_free (once);	3504	ev_free (once);
2604		3505
2605	cb (revents, arg);	3506	cb (revents, arg);
2606	}	3507	}
2607		3508
2608	static void	3509	static void
2609	once_cb_io (EV_P_ ev_io *w, int revents)	3510	once_cb_io (EV_P_ ev_io *w, int revents)
2610	{	3511	{
2611	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));
2612	}	3515	}
2613		3516
2614	static void	3517	static void
2615	once_cb_to (EV_P_ ev_timer *w, int revents)	3518	once_cb_to (EV_P_ ev_timer *w, int revents)
2616	{	3519	{
2617	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));
2618	}	3523	}
2619		3524
2620	void	3525	void
2621	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)
2622	{	3527	{
…		…
2644	ev_timer_set (&once->to, timeout, 0.);	3549	ev_timer_set (&once->to, timeout, 0.);
2645	ev_timer_start (EV_A_ &once->to);	3550	ev_timer_start (EV_A_ &once->to);
2646	}	3551	}
2647	}	3552	}
2648		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
2649	#if EV_MULTIPLICITY	3662	#if EV_MULTIPLICITY
2650	#include "ev_wrap.h"	3663	#include "ev_wrap.h"
2651	#endif	3664	#endif
2652		3665
2653	#ifdef __cplusplus	3666	#ifdef __cplusplus

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