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Comparing libev/ev.c (file contents):
Revision 1.236 by root, Wed May 7 14:46:22 2008 UTC vs.
Revision 1.316 by root, Fri Sep 18 21:02:12 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
…		…
292	*/	450	*/
293	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	451	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
294		452
295	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	453	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
296	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	454	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
297	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
298		455
299	#if __GNUC__ >= 4	456	#if __GNUC__ >= 4
300	# define expect(expr,value) __builtin_expect ((expr),(value))	457	# define expect(expr,value) __builtin_expect ((expr),(value))
301	# define noinline __attribute__ ((noinline))	458	# define noinline __attribute__ ((noinline))
302	#else	459	#else
…		…
315	# define inline_speed static noinline	472	# define inline_speed static noinline
316	#else	473	#else
317	# define inline_speed static inline	474	# define inline_speed static inline
318	#endif	475	#endif
319		476
320	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	477	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		478
		479	#if EV_MINPRI == EV_MAXPRI
		480	# define ABSPRI(w) (((W)w), 0)
		481	#else
321	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	482	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		483	#endif
322		484
323	#define EMPTY /* required for microsofts broken pseudo-c compiler */	485	#define EMPTY /* required for microsofts broken pseudo-c compiler */
324	#define EMPTY2(a,b) /* used to suppress some warnings */	486	#define EMPTY2(a,b) /* used to suppress some warnings */
325		487
326	typedef ev_watcher *W;	488	typedef ev_watcher *W;
…		…
328	typedef ev_watcher_time *WT;	490	typedef ev_watcher_time *WT;
329		491
330	#define ev_active(w) ((W)(w))->active	492	#define ev_active(w) ((W)(w))->active
331	#define ev_at(w) ((WT)(w))->at	493	#define ev_at(w) ((WT)(w))->at
332		494
333	#if EV_USE_MONOTONIC	495	#if EV_USE_REALTIME
334	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	496	/* 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 */	497	/* giving it a reasonably high chance of working on typical architetcures */
		498	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		499	#endif
		500
		501	#if EV_USE_MONOTONIC
336	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	502	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		503	#endif
		504
		505	#ifndef EV_FD_TO_WIN32_HANDLE
		506	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		507	#endif
		508	#ifndef EV_WIN32_HANDLE_TO_FD
		509	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0)
		510	#endif
		511	#ifndef EV_WIN32_CLOSE_FD
		512	# define EV_WIN32_CLOSE_FD(fd) close (fd)
337	#endif	513	#endif
338		514
339	#ifdef _WIN32	515	#ifdef _WIN32
340	# include "ev_win32.c"	516	# include "ev_win32.c"
341	#endif	517	#endif
…		…
349	{	525	{
350	syserr_cb = cb;	526	syserr_cb = cb;
351	}	527	}
352		528
353	static void noinline	529	static void noinline
354	syserr (const char *msg)	530	ev_syserr (const char *msg)
355	{	531	{
356	if (!msg)	532	if (!msg)
357	msg = "(libev) system error";	533	msg = "(libev) system error";
358		534
359	if (syserr_cb)	535	if (syserr_cb)
…		…
405	#define ev_malloc(size) ev_realloc (0, (size))	581	#define ev_malloc(size) ev_realloc (0, (size))
406	#define ev_free(ptr) ev_realloc ((ptr), 0)	582	#define ev_free(ptr) ev_realloc ((ptr), 0)
407		583
408	/*****************************************************************************/	584	/*****************************************************************************/
409		585
		586	/* set in reify when reification needed */
		587	#define EV_ANFD_REIFY 1
		588
		589	/* file descriptor info structure */
410	typedef struct	590	typedef struct
411	{	591	{
412	WL head;	592	WL head;
413	unsigned char events;	593	unsigned char events; /* the events watched for */
		594	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		595	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
414	unsigned char reify;	596	unsigned char unused;
		597	#if EV_USE_EPOLL
		598	unsigned int egen; /* generation counter to counter epoll bugs */
		599	#endif
415	#if EV_SELECT_IS_WINSOCKET	600	#if EV_SELECT_IS_WINSOCKET
416	SOCKET handle;	601	SOCKET handle;
417	#endif	602	#endif
418	} ANFD;	603	} ANFD;
419		604
		605	/* stores the pending event set for a given watcher */
420	typedef struct	606	typedef struct
421	{	607	{
422	W w;	608	W w;
423	int events;	609	int events; /* the pending event set for the given watcher */
424	} ANPENDING;	610	} ANPENDING;
425		611
426	#if EV_USE_INOTIFY	612	#if EV_USE_INOTIFY
		613	/* hash table entry per inotify-id */
427	typedef struct	614	typedef struct
428	{	615	{
429	WL head;	616	WL head;
430	} ANFS;	617	} ANFS;
		618	#endif
		619
		620	/* Heap Entry */
		621	#if EV_HEAP_CACHE_AT
		622	/* a heap element */
		623	typedef struct {
		624	ev_tstamp at;
		625	WT w;
		626	} ANHE;
		627
		628	#define ANHE_w(he) (he).w /* access watcher, read-write */
		629	#define ANHE_at(he) (he).at /* access cached at, read-only */
		630	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		631	#else
		632	/* a heap element */
		633	typedef WT ANHE;
		634
		635	#define ANHE_w(he) (he)
		636	#define ANHE_at(he) (he)->at
		637	#define ANHE_at_cache(he)
431	#endif	638	#endif
432		639
433	#if EV_MULTIPLICITY	640	#if EV_MULTIPLICITY
434		641
435	struct ev_loop	642	struct ev_loop
…		…
454		661
455	static int ev_default_loop_ptr;	662	static int ev_default_loop_ptr;
456		663
457	#endif	664	#endif
458		665
		666	#if EV_MINIMAL < 2
		667	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		668	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		669	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		670	#else
		671	# define EV_RELEASE_CB (void)0
		672	# define EV_ACQUIRE_CB (void)0
		673	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		674	#endif
		675
		676	#define EVUNLOOP_RECURSE 0x80
		677
459	/*****************************************************************************/	678	/*****************************************************************************/
460		679
		680	#ifndef EV_HAVE_EV_TIME
461	ev_tstamp	681	ev_tstamp
462	ev_time (void)	682	ev_time (void)
463	{	683	{
464	#if EV_USE_REALTIME	684	#if EV_USE_REALTIME
		685	if (expect_true (have_realtime))
		686	{
465	struct timespec ts;	687	struct timespec ts;
466	clock_gettime (CLOCK_REALTIME, &ts);	688	clock_gettime (CLOCK_REALTIME, &ts);
467	return ts.tv_sec + ts.tv_nsec * 1e-9;	689	return ts.tv_sec + ts.tv_nsec * 1e-9;
468	#else	690	}
		691	#endif
		692
469	struct timeval tv;	693	struct timeval tv;
470	gettimeofday (&tv, 0);	694	gettimeofday (&tv, 0);
471	return tv.tv_sec + tv.tv_usec * 1e-6;	695	return tv.tv_sec + tv.tv_usec * 1e-6;
472	#endif
473	}	696	}
		697	#endif
474		698
475	ev_tstamp inline_size	699	inline_size ev_tstamp
476	get_clock (void)	700	get_clock (void)
477	{	701	{
478	#if EV_USE_MONOTONIC	702	#if EV_USE_MONOTONIC
479	if (expect_true (have_monotonic))	703	if (expect_true (have_monotonic))
480	{	704	{
…		…
513	struct timeval tv;	737	struct timeval tv;
514		738
515	tv.tv_sec = (time_t)delay;	739	tv.tv_sec = (time_t)delay;
516	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	740	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
517		741
		742	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		743	/* something not guaranteed by newer posix versions, but guaranteed */
		744	/* by older ones */
518	select (0, 0, 0, 0, &tv);	745	select (0, 0, 0, 0, &tv);
519	#endif	746	#endif
520	}	747	}
521	}	748	}
522		749
523	/*****************************************************************************/	750	/*****************************************************************************/
524		751
525	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	752	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
526		753
527	int inline_size	754	/* find a suitable new size for the given array, */
		755	/* hopefully by rounding to a ncie-to-malloc size */
		756	inline_size int
528	array_nextsize (int elem, int cur, int cnt)	757	array_nextsize (int elem, int cur, int cnt)
529	{	758	{
530	int ncur = cur + 1;	759	int ncur = cur + 1;
531		760
532	do	761	do
…		…
549	array_realloc (int elem, void *base, int *cur, int cnt)	778	array_realloc (int elem, void *base, int *cur, int cnt)
550	{	779	{
551	*cur = array_nextsize (elem, *cur, cnt);	780	*cur = array_nextsize (elem, *cur, cnt);
552	return ev_realloc (base, elem * *cur);	781	return ev_realloc (base, elem * *cur);
553	}	782	}
		783
		784	#define array_init_zero(base,count) \
		785	memset ((void *)(base), 0, sizeof (*(base)) * (count))
554		786
555	#define array_needsize(type,base,cur,cnt,init) \	787	#define array_needsize(type,base,cur,cnt,init) \
556	if (expect_false ((cnt) > (cur))) \	788	if (expect_false ((cnt) > (cur))) \
557	{ \	789	{ \
558	int ocur_ = (cur); \	790	int ocur_ = (cur); \
…		…
570	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	802	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
571	}	803	}
572	#endif	804	#endif
573		805
574	#define array_free(stem, idx) \	806	#define array_free(stem, idx) \
575	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	807	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
576		808
577	/*****************************************************************************/	809	/*****************************************************************************/
		810
		811	/* dummy callback for pending events */
		812	static void noinline
		813	pendingcb (EV_P_ ev_prepare *w, int revents)
		814	{
		815	}
578		816
579	void noinline	817	void noinline
580	ev_feed_event (EV_P_ void *w, int revents)	818	ev_feed_event (EV_P_ void *w, int revents)
581	{	819	{
582	W w_ = (W)w;	820	W w_ = (W)w;
…		…
591	pendings [pri][w_->pending - 1].w = w_;	829	pendings [pri][w_->pending - 1].w = w_;
592	pendings [pri][w_->pending - 1].events = revents;	830	pendings [pri][w_->pending - 1].events = revents;
593	}	831	}
594	}	832	}
595		833
596	void inline_speed	834	inline_speed void
		835	feed_reverse (EV_P_ W w)
		836	{
		837	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		838	rfeeds [rfeedcnt++] = w;
		839	}
		840
		841	inline_size void
		842	feed_reverse_done (EV_P_ int revents)
		843	{
		844	do
		845	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		846	while (rfeedcnt);
		847	}
		848
		849	inline_speed void
597	queue_events (EV_P_ W *events, int eventcnt, int type)	850	queue_events (EV_P_ W *events, int eventcnt, int type)
598	{	851	{
599	int i;	852	int i;
600		853
601	for (i = 0; i < eventcnt; ++i)	854	for (i = 0; i < eventcnt; ++i)
602	ev_feed_event (EV_A_ events [i], type);	855	ev_feed_event (EV_A_ events [i], type);
603	}	856	}
604		857
605	/*****************************************************************************/	858	/*****************************************************************************/
606		859
607	void inline_size	860	inline_speed void
608	anfds_init (ANFD *base, int count)
609	{
610	while (count--)
611	{
612	base->head = 0;
613	base->events = EV_NONE;
614	base->reify = 0;
615
616	++base;
617	}
618	}
619
620	void inline_speed
621	fd_event (EV_P_ int fd, int revents)	861	fd_event_nc (EV_P_ int fd, int revents)
622	{	862	{
623	ANFD *anfd = anfds + fd;	863	ANFD *anfd = anfds + fd;
624	ev_io *w;	864	ev_io *w;
625		865
626	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	866	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
630	if (ev)	870	if (ev)
631	ev_feed_event (EV_A_ (W)w, ev);	871	ev_feed_event (EV_A_ (W)w, ev);
632	}	872	}
633	}	873	}
634		874
		875	/* do not submit kernel events for fds that have reify set */
		876	/* because that means they changed while we were polling for new events */
		877	inline_speed void
		878	fd_event (EV_P_ int fd, int revents)
		879	{
		880	ANFD *anfd = anfds + fd;
		881
		882	if (expect_true (!anfd->reify))
		883	fd_event_nc (EV_A_ fd, revents);
		884	}
		885
635	void	886	void
636	ev_feed_fd_event (EV_P_ int fd, int revents)	887	ev_feed_fd_event (EV_P_ int fd, int revents)
637	{	888	{
638	if (fd >= 0 && fd < anfdmax)	889	if (fd >= 0 && fd < anfdmax)
639	fd_event (EV_A_ fd, revents);	890	fd_event_nc (EV_A_ fd, revents);
640	}	891	}
641		892
642	void inline_size	893	/* make sure the external fd watch events are in-sync */
		894	/* with the kernel/libev internal state */
		895	inline_size void
643	fd_reify (EV_P)	896	fd_reify (EV_P)
644	{	897	{
645	int i;	898	int i;
646		899
647	for (i = 0; i < fdchangecnt; ++i)	900	for (i = 0; i < fdchangecnt; ++i)
…		…
656	events |= (unsigned char)w->events;	909	events |= (unsigned char)w->events;
657		910
658	#if EV_SELECT_IS_WINSOCKET	911	#if EV_SELECT_IS_WINSOCKET
659	if (events)	912	if (events)
660	{	913	{
661	unsigned long argp;	914	unsigned long arg;
662	#ifdef EV_FD_TO_WIN32_HANDLE
663	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	915	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
664	#else
665	anfd->handle = _get_osfhandle (fd);
666	#endif
667	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	916	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
668	}	917	}
669	#endif	918	#endif
670		919
671	{	920	{
672	unsigned char o_events = anfd->events;	921	unsigned char o_events = anfd->events;
673	unsigned char o_reify = anfd->reify;	922	unsigned char o_reify = anfd->reify;
674		923
675	anfd->reify = 0;	924	anfd->reify = 0;
676	anfd->events = events;	925	anfd->events = events;
677		926
678	if (o_events != events || o_reify & EV_IOFDSET)	927	if (o_events != events || o_reify & EV__IOFDSET)
679	backend_modify (EV_A_ fd, o_events, events);	928	backend_modify (EV_A_ fd, o_events, events);
680	}	929	}
681	}	930	}
682		931
683	fdchangecnt = 0;	932	fdchangecnt = 0;
684	}	933	}
685		934
686	void inline_size	935	/* something about the given fd changed */
		936	inline_size void
687	fd_change (EV_P_ int fd, int flags)	937	fd_change (EV_P_ int fd, int flags)
688	{	938	{
689	unsigned char reify = anfds [fd].reify;	939	unsigned char reify = anfds [fd].reify;
690	anfds [fd].reify |= flags;	940	anfds [fd].reify |= flags;
691		941
…		…
695	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	945	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
696	fdchanges [fdchangecnt - 1] = fd;	946	fdchanges [fdchangecnt - 1] = fd;
697	}	947	}
698	}	948	}
699		949
700	void inline_speed	950	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		951	inline_speed void
701	fd_kill (EV_P_ int fd)	952	fd_kill (EV_P_ int fd)
702	{	953	{
703	ev_io *w;	954	ev_io *w;
704		955
705	while ((w = (ev_io *)anfds [fd].head))	956	while ((w = (ev_io *)anfds [fd].head))
…		…
707	ev_io_stop (EV_A_ w);	958	ev_io_stop (EV_A_ w);
708	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	959	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
709	}	960	}
710	}	961	}
711		962
712	int inline_size	963	/* check whether the given fd is atcually valid, for error recovery */
		964	inline_size int
713	fd_valid (int fd)	965	fd_valid (int fd)
714	{	966	{
715	#ifdef _WIN32	967	#ifdef _WIN32
716	return _get_osfhandle (fd) != -1;	968	return _get_osfhandle (fd) != -1;
717	#else	969	#else
…		…
725	{	977	{
726	int fd;	978	int fd;
727		979
728	for (fd = 0; fd < anfdmax; ++fd)	980	for (fd = 0; fd < anfdmax; ++fd)
729	if (anfds [fd].events)	981	if (anfds [fd].events)
730	if (!fd_valid (fd) == -1 && errno == EBADF)	982	if (!fd_valid (fd) && errno == EBADF)
731	fd_kill (EV_A_ fd);	983	fd_kill (EV_A_ fd);
732	}	984	}
733		985
734	/* called on ENOMEM in select/poll to kill some fds and retry */	986	/* called on ENOMEM in select/poll to kill some fds and retry */
735	static void noinline	987	static void noinline
…		…
739		991
740	for (fd = anfdmax; fd--; )	992	for (fd = anfdmax; fd--; )
741	if (anfds [fd].events)	993	if (anfds [fd].events)
742	{	994	{
743	fd_kill (EV_A_ fd);	995	fd_kill (EV_A_ fd);
744	return;	996	break;
745	}	997	}
746	}	998	}
747		999
748	/* usually called after fork if backend needs to re-arm all fds from scratch */	1000	/* usually called after fork if backend needs to re-arm all fds from scratch */
749	static void noinline	1001	static void noinline
…		…
753		1005
754	for (fd = 0; fd < anfdmax; ++fd)	1006	for (fd = 0; fd < anfdmax; ++fd)
755	if (anfds [fd].events)	1007	if (anfds [fd].events)
756	{	1008	{
757	anfds [fd].events = 0;	1009	anfds [fd].events = 0;
		1010	anfds [fd].emask = 0;
758	fd_change (EV_A_ fd, EV_IOFDSET | 1);	1011	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
759	}	1012	}
760	}	1013	}
761		1014
762	/*****************************************************************************/	1015	/*****************************************************************************/
		1016
		1017	/*
		1018	* the heap functions want a real array index. array index 0 uis guaranteed to not
		1019	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		1020	* the branching factor of the d-tree.
		1021	*/
763		1022
764	/*	1023	/*
765	* at the moment we allow libev the luxury of two heaps,	1024	* at the moment we allow libev the luxury of two heaps,
766	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap	1025	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
767	* which is more cache-efficient.	1026	* which is more cache-efficient.
768	* the difference is about 5% with 50000+ watchers.	1027	* the difference is about 5% with 50000+ watchers.
769	*/	1028	*/
770	#define USE_4HEAP !EV_MINIMAL
771	#if USE_4HEAP	1029	#if EV_USE_4HEAP
772		1030
		1031	#define DHEAP 4
773	#define HEAP0 3 /* index of first element in heap */	1032	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		1033	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		1034	#define UPHEAP_DONE(p,k) ((p) == (k))
774		1035
775	/* towards the root */	1036	/* away from the root */
776	void inline_speed	1037	inline_speed void
777	upheap (WT *heap, int k)	1038	downheap (ANHE *heap, int N, int k)
778	{	1039	{
779	WT w = heap [k];	1040	ANHE he = heap [k];
		1041	ANHE *E = heap + N + HEAP0;
780		1042
781	for (;;)	1043	for (;;)
782	{	1044	{
783	int p = ((k - HEAP0 - 1) / 4) + HEAP0;
784
785	if (p >= HEAP0 || heap [p]->at <= w->at)
786	break;
787
788	heap [k] = heap [p];
789	ev_active (heap [k]) = k;
790	k = p;
791	}
792
793	heap [k] = w;
794	ev_active (heap [k]) = k;
795	}
796
797	/* away from the root */
798	void inline_speed
799	downheap (WT *heap, int N, int k)
800	{
801	WT w = heap [k];
802	WT *E = heap + N + HEAP0;
803
804	for (;;)
805	{
806	ev_tstamp minat;	1045	ev_tstamp minat;
807	WT *minpos;	1046	ANHE *minpos;
808	WT *pos = heap + 4 * (k - HEAP0) + HEAP0;	1047	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
809		1048
810	// find minimum child	1049	/* find minimum child */
811	if (expect_true (pos +3 < E))	1050	if (expect_true (pos + DHEAP - 1 < E))
812	{	1051	{
813	/* fast path */
814	(minpos = pos + 0), (minat = (*minpos)->at);	1052	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
815	if (pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);	1053	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
816	if (pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);	1054	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
817	if (pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);	1055	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1056	}
		1057	else if (pos < E)
		1058	{
		1059	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1060	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1061	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1062	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
818	}	1063	}
819	else	1064	else
820	{
821	/* slow path */
822	if (pos >= E)
823	break;
824	(minpos = pos + 0), (minat = (*minpos)->at);
825	if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
826	if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
827	if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
828	}
829
830	if (w->at <= minat)
831	break;	1065	break;
832		1066
833	ev_active (*minpos) = k;	1067	if (ANHE_at (he) <= minat)
		1068	break;
		1069
834	heap [k] = *minpos;	1070	heap [k] = *minpos;
		1071	ev_active (ANHE_w (*minpos)) = k;
835		1072
836	k = minpos - heap;	1073	k = minpos - heap;
837	}	1074	}
838		1075
839	heap [k] = w;	1076	heap [k] = he;
840	ev_active (heap [k]) = k;	1077	ev_active (ANHE_w (he)) = k;
841	}	1078	}
842		1079
843	#else // 4HEAP	1080	#else /* 4HEAP */
844		1081
845	#define HEAP0 1	1082	#define HEAP0 1
		1083	#define HPARENT(k) ((k) >> 1)
		1084	#define UPHEAP_DONE(p,k) (!(p))
846		1085
847	/* towards the root */	1086	/* away from the root */
848	void inline_speed	1087	inline_speed void
849	upheap (WT *heap, int k)	1088	downheap (ANHE *heap, int N, int k)
850	{	1089	{
851	WT w = heap [k];	1090	ANHE he = heap [k];
852		1091
853	for (;;)	1092	for (;;)
854	{	1093	{
855	int p = k >> 1;	1094	int c = k << 1;
856		1095
857	/* maybe we could use a dummy element at heap [0]? */	1096	if (c >= N + HEAP0)
858	if (!p || heap [p]->at <= w->at)
859	break;	1097	break;
860		1098
861	heap [k] = heap [p];	1099	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
862	ev_active (heap [k]) = k;	1100	? 1 : 0;
863	k = p;
864	}
865		1101
866	heap [k] = w;	1102	if (ANHE_at (he) <= ANHE_at (heap [c]))
867	ev_active (heap [k]) = k;
868	}
869
870	/* away from the root */
871	void inline_speed
872	downheap (WT *heap, int N, int k)
873	{
874	WT w = heap [k];
875
876	for (;;)
877	{
878	int c = k << 1;
879
880	if (c > N)
881	break;	1103	break;
882		1104
883	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
884	? 1 : 0;
885
886	if (w->at <= heap [c]->at)
887	break;
888
889	heap [k] = heap [c];	1105	heap [k] = heap [c];
890	((W)heap [k])->active = k;	1106	ev_active (ANHE_w (heap [k])) = k;
891		1107
892	k = c;	1108	k = c;
893	}	1109	}
894		1110
895	heap [k] = w;	1111	heap [k] = he;
		1112	ev_active (ANHE_w (he)) = k;
		1113	}
		1114	#endif
		1115
		1116	/* towards the root */
		1117	inline_speed void
		1118	upheap (ANHE *heap, int k)
		1119	{
		1120	ANHE he = heap [k];
		1121
		1122	for (;;)
		1123	{
		1124	int p = HPARENT (k);
		1125
		1126	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1127	break;
		1128
		1129	heap [k] = heap [p];
896	ev_active (heap [k]) = k;	1130	ev_active (ANHE_w (heap [k])) = k;
897	}	1131	k = p;
898	#endif	1132	}
899		1133
900	void inline_size	1134	heap [k] = he;
		1135	ev_active (ANHE_w (he)) = k;
		1136	}
		1137
		1138	/* move an element suitably so it is in a correct place */
		1139	inline_size void
901	adjustheap (WT *heap, int N, int k)	1140	adjustheap (ANHE *heap, int N, int k)
902	{	1141	{
		1142	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
903	upheap (heap, k);	1143	upheap (heap, k);
		1144	else
904	downheap (heap, N, k);	1145	downheap (heap, N, k);
		1146	}
		1147
		1148	/* rebuild the heap: this function is used only once and executed rarely */
		1149	inline_size void
		1150	reheap (ANHE *heap, int N)
		1151	{
		1152	int i;
		1153
		1154	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1155	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1156	for (i = 0; i < N; ++i)
		1157	upheap (heap, i + HEAP0);
905	}	1158	}
906		1159
907	/*****************************************************************************/	1160	/*****************************************************************************/
908		1161
		1162	/* associate signal watchers to a signal signal */
909	typedef struct	1163	typedef struct
910	{	1164	{
		1165	EV_ATOMIC_T pending;
		1166	#if EV_MULTIPLICITY
		1167	EV_P;
		1168	#endif
911	WL head;	1169	WL head;
912	EV_ATOMIC_T gotsig;
913	} ANSIG;	1170	} ANSIG;
914		1171
915	static ANSIG *signals;	1172	static ANSIG signals [EV_NSIG - 1];
916	static int signalmax;
917
918	static EV_ATOMIC_T gotsig;
919
920	void inline_size
921	signals_init (ANSIG *base, int count)
922	{
923	while (count--)
924	{
925	base->head = 0;
926	base->gotsig = 0;
927
928	++base;
929	}
930	}
931		1173
932	/*****************************************************************************/	1174	/*****************************************************************************/
933		1175
934	void inline_speed	1176	/* used to prepare libev internal fd's */
		1177	/* this is not fork-safe */
		1178	inline_speed void
935	fd_intern (int fd)	1179	fd_intern (int fd)
936	{	1180	{
937	#ifdef _WIN32	1181	#ifdef _WIN32
938	int arg = 1;	1182	unsigned long arg = 1;
939	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1183	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
940	#else	1184	#else
941	fcntl (fd, F_SETFD, FD_CLOEXEC);	1185	fcntl (fd, F_SETFD, FD_CLOEXEC);
942	fcntl (fd, F_SETFL, O_NONBLOCK);	1186	fcntl (fd, F_SETFL, O_NONBLOCK);
943	#endif	1187	#endif
944	}	1188	}
945		1189
946	static void noinline	1190	static void noinline
947	evpipe_init (EV_P)	1191	evpipe_init (EV_P)
948	{	1192	{
949	if (!ev_is_active (&pipeev))	1193	if (!ev_is_active (&pipe_w))
950	{	1194	{
951	#if EV_USE_EVENTFD	1195	#if EV_USE_EVENTFD
		1196	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1197	if (evfd < 0 && errno == EINVAL)
952	if ((evfd = eventfd (0, 0)) >= 0)	1198	evfd = eventfd (0, 0);
		1199
		1200	if (evfd >= 0)
953	{	1201	{
954	evpipe [0] = -1;	1202	evpipe [0] = -1;
955	fd_intern (evfd);	1203	fd_intern (evfd); /* doing it twice doesn't hurt */
956	ev_io_set (&pipeev, evfd, EV_READ);	1204	ev_io_set (&pipe_w, evfd, EV_READ);
957	}	1205	}
958	else	1206	else
959	#endif	1207	#endif
960	{	1208	{
961	while (pipe (evpipe))	1209	while (pipe (evpipe))
962	syserr ("(libev) error creating signal/async pipe");	1210	ev_syserr ("(libev) error creating signal/async pipe");
963		1211
964	fd_intern (evpipe [0]);	1212	fd_intern (evpipe [0]);
965	fd_intern (evpipe [1]);	1213	fd_intern (evpipe [1]);
966	ev_io_set (&pipeev, evpipe [0], EV_READ);	1214	ev_io_set (&pipe_w, evpipe [0], EV_READ);
967	}	1215	}
968		1216
969	ev_io_start (EV_A_ &pipeev);	1217	ev_io_start (EV_A_ &pipe_w);
970	ev_unref (EV_A); /* watcher should not keep loop alive */	1218	ev_unref (EV_A); /* watcher should not keep loop alive */
971	}	1219	}
972	}	1220	}
973		1221
974	void inline_size	1222	inline_size void
975	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1223	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
976	{	1224	{
977	if (!*flag)	1225	if (!*flag)
978	{	1226	{
979	int old_errno = errno; /* save errno because write might clobber it */	1227	int old_errno = errno; /* save errno because write might clobber it */
…		…
992		1240
993	errno = old_errno;	1241	errno = old_errno;
994	}	1242	}
995	}	1243	}
996		1244
		1245	/* called whenever the libev signal pipe */
		1246	/* got some events (signal, async) */
997	static void	1247	static void
998	pipecb (EV_P_ ev_io *iow, int revents)	1248	pipecb (EV_P_ ev_io *iow, int revents)
999	{	1249	{
		1250	int i;
		1251
1000	#if EV_USE_EVENTFD	1252	#if EV_USE_EVENTFD
1001	if (evfd >= 0)	1253	if (evfd >= 0)
1002	{	1254	{
1003	uint64_t counter;	1255	uint64_t counter;
1004	read (evfd, &counter, sizeof (uint64_t));	1256	read (evfd, &counter, sizeof (uint64_t));
…		…
1008	{	1260	{
1009	char dummy;	1261	char dummy;
1010	read (evpipe [0], &dummy, 1);	1262	read (evpipe [0], &dummy, 1);
1011	}	1263	}
1012		1264
1013	if (gotsig && ev_is_default_loop (EV_A))	1265	if (sig_pending)
1014	{	1266	{
1015	int signum;	1267	sig_pending = 0;
1016	gotsig = 0;
1017		1268
1018	for (signum = signalmax; signum--; )	1269	for (i = EV_NSIG - 1; i--; )
1019	if (signals [signum].gotsig)	1270	if (expect_false (signals [i].pending))
1020	ev_feed_signal_event (EV_A_ signum + 1);	1271	ev_feed_signal_event (EV_A_ i + 1);
1021	}	1272	}
1022		1273
1023	#if EV_ASYNC_ENABLE	1274	#if EV_ASYNC_ENABLE
1024	if (gotasync)	1275	if (async_pending)
1025	{	1276	{
1026	int i;	1277	async_pending = 0;
1027	gotasync = 0;
1028		1278
1029	for (i = asynccnt; i--; )	1279	for (i = asynccnt; i--; )
1030	if (asyncs [i]->sent)	1280	if (asyncs [i]->sent)
1031	{	1281	{
1032	asyncs [i]->sent = 0;	1282	asyncs [i]->sent = 0;
…		…
1040		1290
1041	static void	1291	static void
1042	ev_sighandler (int signum)	1292	ev_sighandler (int signum)
1043	{	1293	{
1044	#if EV_MULTIPLICITY	1294	#if EV_MULTIPLICITY
1045	struct ev_loop *loop = &default_loop_struct;	1295	EV_P = signals [signum - 1].loop;
1046	#endif	1296	#endif
1047		1297
1048	#if _WIN32	1298	#if _WIN32
1049	signal (signum, ev_sighandler);	1299	signal (signum, ev_sighandler);
1050	#endif	1300	#endif
1051		1301
1052	signals [signum - 1].gotsig = 1;	1302	signals [signum - 1].pending = 1;
1053	evpipe_write (EV_A_ &gotsig);	1303	evpipe_write (EV_A_ &sig_pending);
1054	}	1304	}
1055		1305
1056	void noinline	1306	void noinline
1057	ev_feed_signal_event (EV_P_ int signum)	1307	ev_feed_signal_event (EV_P_ int signum)
1058	{	1308	{
1059	WL w;	1309	WL w;
1060		1310
		1311	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1312	return;
		1313
		1314	--signum;
		1315
1061	#if EV_MULTIPLICITY	1316	#if EV_MULTIPLICITY
1062	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1317	/* it is permissible to try to feed a signal to the wrong loop */
1063	#endif	1318	/* or, likely more useful, feeding a signal nobody is waiting for */
1064		1319
1065	--signum;	1320	if (expect_false (signals [signum].loop != EV_A))
1066
1067	if (signum < 0 || signum >= signalmax)
1068	return;	1321	return;
		1322	#endif
1069		1323
1070	signals [signum].gotsig = 0;	1324	signals [signum].pending = 0;
1071		1325
1072	for (w = signals [signum].head; w; w = w->next)	1326	for (w = signals [signum].head; w; w = w->next)
1073	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1327	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1074	}	1328	}
1075		1329
		1330	#if EV_USE_SIGNALFD
		1331	static void
		1332	sigfdcb (EV_P_ ev_io *iow, int revents)
		1333	{
		1334	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1335
		1336	for (;;)
		1337	{
		1338	ssize_t res = read (sigfd, si, sizeof (si));
		1339
		1340	/* not ISO-C, as res might be -1, but works with SuS */
		1341	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1342	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1343
		1344	if (res < (ssize_t)sizeof (si))
		1345	break;
		1346	}
		1347	}
		1348	#endif
		1349
1076	/*****************************************************************************/	1350	/*****************************************************************************/
1077		1351
1078	static WL childs [EV_PID_HASHSIZE];	1352	static WL childs [EV_PID_HASHSIZE];
1079		1353
1080	#ifndef _WIN32	1354	#ifndef _WIN32
…		…
1083		1357
1084	#ifndef WIFCONTINUED	1358	#ifndef WIFCONTINUED
1085	# define WIFCONTINUED(status) 0	1359	# define WIFCONTINUED(status) 0
1086	#endif	1360	#endif
1087		1361
1088	void inline_speed	1362	/* handle a single child status event */
		1363	inline_speed void
1089	child_reap (EV_P_ int chain, int pid, int status)	1364	child_reap (EV_P_ int chain, int pid, int status)
1090	{	1365	{
1091	ev_child *w;	1366	ev_child *w;
1092	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1367	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1093		1368
…		…
1106		1381
1107	#ifndef WCONTINUED	1382	#ifndef WCONTINUED
1108	# define WCONTINUED 0	1383	# define WCONTINUED 0
1109	#endif	1384	#endif
1110		1385
		1386	/* called on sigchld etc., calls waitpid */
1111	static void	1387	static void
1112	childcb (EV_P_ ev_signal *sw, int revents)	1388	childcb (EV_P_ ev_signal *sw, int revents)
1113	{	1389	{
1114	int pid, status;	1390	int pid, status;
1115		1391
…		…
1196	/* kqueue is borked on everything but netbsd apparently */	1472	/* kqueue is borked on everything but netbsd apparently */
1197	/* it usually doesn't work correctly on anything but sockets and pipes */	1473	/* it usually doesn't work correctly on anything but sockets and pipes */
1198	flags &= ~EVBACKEND_KQUEUE;	1474	flags &= ~EVBACKEND_KQUEUE;
1199	#endif	1475	#endif
1200	#ifdef __APPLE__	1476	#ifdef __APPLE__
1201	// flags &= ~EVBACKEND_KQUEUE; for documentation	1477	/* only select works correctly on that "unix-certified" platform */
1202	flags &= ~EVBACKEND_POLL;	1478	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1479	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1203	#endif	1480	#endif
1204		1481
1205	return flags;	1482	return flags;
1206	}	1483	}
1207		1484
…		…
1221	ev_backend (EV_P)	1498	ev_backend (EV_P)
1222	{	1499	{
1223	return backend;	1500	return backend;
1224	}	1501	}
1225		1502
		1503	#if EV_MINIMAL < 2
1226	unsigned int	1504	unsigned int
1227	ev_loop_count (EV_P)	1505	ev_loop_count (EV_P)
1228	{	1506	{
1229	return loop_count;	1507	return loop_count;
1230	}	1508	}
1231		1509
		1510	unsigned int
		1511	ev_loop_depth (EV_P)
		1512	{
		1513	return loop_depth;
		1514	}
		1515
1232	void	1516	void
1233	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1517	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1234	{	1518	{
1235	io_blocktime = interval;	1519	io_blocktime = interval;
1236	}	1520	}
…		…
1239	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1523	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1240	{	1524	{
1241	timeout_blocktime = interval;	1525	timeout_blocktime = interval;
1242	}	1526	}
1243		1527
		1528	void
		1529	ev_set_userdata (EV_P_ void *data)
		1530	{
		1531	userdata = data;
		1532	}
		1533
		1534	void *
		1535	ev_userdata (EV_P)
		1536	{
		1537	return userdata;
		1538	}
		1539
		1540	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1541	{
		1542	invoke_cb = invoke_pending_cb;
		1543	}
		1544
		1545	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1546	{
		1547	release_cb = release;
		1548	acquire_cb = acquire;
		1549	}
		1550	#endif
		1551
		1552	/* initialise a loop structure, must be zero-initialised */
1244	static void noinline	1553	static void noinline
1245	loop_init (EV_P_ unsigned int flags)	1554	loop_init (EV_P_ unsigned int flags)
1246	{	1555	{
1247	if (!backend)	1556	if (!backend)
1248	{	1557	{
		1558	#if EV_USE_REALTIME
		1559	if (!have_realtime)
		1560	{
		1561	struct timespec ts;
		1562
		1563	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1564	have_realtime = 1;
		1565	}
		1566	#endif
		1567
1249	#if EV_USE_MONOTONIC	1568	#if EV_USE_MONOTONIC
		1569	if (!have_monotonic)
1250	{	1570	{
1251	struct timespec ts;	1571	struct timespec ts;
		1572
1252	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1573	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1253	have_monotonic = 1;	1574	have_monotonic = 1;
1254	}	1575	}
1255	#endif	1576	#endif
		1577
		1578	/* pid check not overridable via env */
		1579	#ifndef _WIN32
		1580	if (flags & EVFLAG_FORKCHECK)
		1581	curpid = getpid ();
		1582	#endif
		1583
		1584	if (!(flags & EVFLAG_NOENV)
		1585	&& !enable_secure ()
		1586	&& getenv ("LIBEV_FLAGS"))
		1587	flags = atoi (getenv ("LIBEV_FLAGS"));
1256		1588
1257	ev_rt_now = ev_time ();	1589	ev_rt_now = ev_time ();
1258	mn_now = get_clock ();	1590	mn_now = get_clock ();
1259	now_floor = mn_now;	1591	now_floor = mn_now;
1260	rtmn_diff = ev_rt_now - mn_now;	1592	rtmn_diff = ev_rt_now - mn_now;
		1593	#if EV_MINIMAL < 2
		1594	invoke_cb = ev_invoke_pending;
		1595	#endif
1261		1596
1262	io_blocktime = 0.;	1597	io_blocktime = 0.;
1263	timeout_blocktime = 0.;	1598	timeout_blocktime = 0.;
1264	backend = 0;	1599	backend = 0;
1265	backend_fd = -1;	1600	backend_fd = -1;
1266	gotasync = 0;	1601	sig_pending = 0;
		1602	#if EV_ASYNC_ENABLE
		1603	async_pending = 0;
		1604	#endif
1267	#if EV_USE_INOTIFY	1605	#if EV_USE_INOTIFY
1268	fs_fd = -2;	1606	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1269	#endif	1607	#endif
1270		1608	#if EV_USE_SIGNALFD
1271	/* pid check not overridable via env */	1609	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1272	#ifndef _WIN32
1273	if (flags & EVFLAG_FORKCHECK)
1274	curpid = getpid ();
1275	#endif	1610	#endif
1276
1277	if (!(flags & EVFLAG_NOENV)
1278	&& !enable_secure ()
1279	&& getenv ("LIBEV_FLAGS"))
1280	flags = atoi (getenv ("LIBEV_FLAGS"));
1281		1611
1282	if (!(flags & 0x0000ffffU))	1612	if (!(flags & 0x0000ffffU))
1283	flags |= ev_recommended_backends ();	1613	flags |= ev_recommended_backends ();
1284		1614
1285	#if EV_USE_PORT	1615	#if EV_USE_PORT
…		…
1296	#endif	1626	#endif
1297	#if EV_USE_SELECT	1627	#if EV_USE_SELECT
1298	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1628	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1299	#endif	1629	#endif
1300		1630
		1631	ev_prepare_init (&pending_w, pendingcb);
		1632
1301	ev_init (&pipeev, pipecb);	1633	ev_init (&pipe_w, pipecb);
1302	ev_set_priority (&pipeev, EV_MAXPRI);	1634	ev_set_priority (&pipe_w, EV_MAXPRI);
1303	}	1635	}
1304	}	1636	}
1305		1637
		1638	/* free up a loop structure */
1306	static void noinline	1639	static void noinline
1307	loop_destroy (EV_P)	1640	loop_destroy (EV_P)
1308	{	1641	{
1309	int i;	1642	int i;
1310		1643
1311	if (ev_is_active (&pipeev))	1644	if (ev_is_active (&pipe_w))
1312	{	1645	{
1313	ev_ref (EV_A); /* signal watcher */	1646	/*ev_ref (EV_A);*/
1314	ev_io_stop (EV_A_ &pipeev);	1647	/*ev_io_stop (EV_A_ &pipe_w);*/
1315		1648
1316	#if EV_USE_EVENTFD	1649	#if EV_USE_EVENTFD
1317	if (evfd >= 0)	1650	if (evfd >= 0)
1318	close (evfd);	1651	close (evfd);
1319	#endif	1652	#endif
1320		1653
1321	if (evpipe [0] >= 0)	1654	if (evpipe [0] >= 0)
1322	{	1655	{
1323	close (evpipe [0]);	1656	EV_WIN32_CLOSE_FD (evpipe [0]);
1324	close (evpipe [1]);	1657	EV_WIN32_CLOSE_FD (evpipe [1]);
1325	}	1658	}
1326	}	1659	}
		1660
		1661	#if EV_USE_SIGNALFD
		1662	if (ev_is_active (&sigfd_w))
		1663	{
		1664	/*ev_ref (EV_A);*/
		1665	/*ev_io_stop (EV_A_ &sigfd_w);*/
		1666
		1667	close (sigfd);
		1668	}
		1669	#endif
1327		1670
1328	#if EV_USE_INOTIFY	1671	#if EV_USE_INOTIFY
1329	if (fs_fd >= 0)	1672	if (fs_fd >= 0)
1330	close (fs_fd);	1673	close (fs_fd);
1331	#endif	1674	#endif
…		…
1355	#if EV_IDLE_ENABLE	1698	#if EV_IDLE_ENABLE
1356	array_free (idle, [i]);	1699	array_free (idle, [i]);
1357	#endif	1700	#endif
1358	}	1701	}
1359		1702
1360	ev_free (anfds); anfdmax = 0;	1703	ev_free (anfds); anfds = 0; anfdmax = 0;
1361		1704
1362	/* have to use the microsoft-never-gets-it-right macro */	1705	/* have to use the microsoft-never-gets-it-right macro */
		1706	array_free (rfeed, EMPTY);
1363	array_free (fdchange, EMPTY);	1707	array_free (fdchange, EMPTY);
1364	array_free (timer, EMPTY);	1708	array_free (timer, EMPTY);
1365	#if EV_PERIODIC_ENABLE	1709	#if EV_PERIODIC_ENABLE
1366	array_free (periodic, EMPTY);	1710	array_free (periodic, EMPTY);
1367	#endif	1711	#endif
…		…
1376		1720
1377	backend = 0;	1721	backend = 0;
1378	}	1722	}
1379		1723
1380	#if EV_USE_INOTIFY	1724	#if EV_USE_INOTIFY
1381	void inline_size infy_fork (EV_P);	1725	inline_size void infy_fork (EV_P);
1382	#endif	1726	#endif
1383		1727
1384	void inline_size	1728	inline_size void
1385	loop_fork (EV_P)	1729	loop_fork (EV_P)
1386	{	1730	{
1387	#if EV_USE_PORT	1731	#if EV_USE_PORT
1388	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1732	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1389	#endif	1733	#endif
…		…
1395	#endif	1739	#endif
1396	#if EV_USE_INOTIFY	1740	#if EV_USE_INOTIFY
1397	infy_fork (EV_A);	1741	infy_fork (EV_A);
1398	#endif	1742	#endif
1399		1743
1400	if (ev_is_active (&pipeev))	1744	if (ev_is_active (&pipe_w))
1401	{	1745	{
1402	/* this "locks" the handlers against writing to the pipe */	1746	/* this "locks" the handlers against writing to the pipe */
1403	/* while we modify the fd vars */	1747	/* while we modify the fd vars */
1404	gotsig = 1;	1748	sig_pending = 1;
1405	#if EV_ASYNC_ENABLE	1749	#if EV_ASYNC_ENABLE
1406	gotasync = 1;	1750	async_pending = 1;
1407	#endif	1751	#endif
1408		1752
1409	ev_ref (EV_A);	1753	ev_ref (EV_A);
1410	ev_io_stop (EV_A_ &pipeev);	1754	ev_io_stop (EV_A_ &pipe_w);
1411		1755
1412	#if EV_USE_EVENTFD	1756	#if EV_USE_EVENTFD
1413	if (evfd >= 0)	1757	if (evfd >= 0)
1414	close (evfd);	1758	close (evfd);
1415	#endif	1759	#endif
1416		1760
1417	if (evpipe [0] >= 0)	1761	if (evpipe [0] >= 0)
1418	{	1762	{
1419	close (evpipe [0]);	1763	EV_WIN32_CLOSE_FD (evpipe [0]);
1420	close (evpipe [1]);	1764	EV_WIN32_CLOSE_FD (evpipe [1]);
1421	}	1765	}
1422		1766
1423	evpipe_init (EV_A);	1767	evpipe_init (EV_A);
1424	/* now iterate over everything, in case we missed something */	1768	/* now iterate over everything, in case we missed something */
1425	pipecb (EV_A_ &pipeev, EV_READ);	1769	pipecb (EV_A_ &pipe_w, EV_READ);
1426	}	1770	}
1427		1771
1428	postfork = 0;	1772	postfork = 0;
1429	}	1773	}
1430		1774
1431	#if EV_MULTIPLICITY	1775	#if EV_MULTIPLICITY
		1776
1432	struct ev_loop *	1777	struct ev_loop *
1433	ev_loop_new (unsigned int flags)	1778	ev_loop_new (unsigned int flags)
1434	{	1779	{
1435	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1780	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1436		1781
1437	memset (loop, 0, sizeof (struct ev_loop));	1782	memset (EV_A, 0, sizeof (struct ev_loop));
1438
1439	loop_init (EV_A_ flags);	1783	loop_init (EV_A_ flags);
1440		1784
1441	if (ev_backend (EV_A))	1785	if (ev_backend (EV_A))
1442	return loop;	1786	return EV_A;
1443		1787
1444	return 0;	1788	return 0;
1445	}	1789	}
1446		1790
1447	void	1791	void
…		…
1453		1797
1454	void	1798	void
1455	ev_loop_fork (EV_P)	1799	ev_loop_fork (EV_P)
1456	{	1800	{
1457	postfork = 1; /* must be in line with ev_default_fork */	1801	postfork = 1; /* must be in line with ev_default_fork */
		1802	}
		1803	#endif /* multiplicity */
		1804
		1805	#if EV_VERIFY
		1806	static void noinline
		1807	verify_watcher (EV_P_ W w)
		1808	{
		1809	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1810
		1811	if (w->pending)
		1812	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1813	}
		1814
		1815	static void noinline
		1816	verify_heap (EV_P_ ANHE *heap, int N)
		1817	{
		1818	int i;
		1819
		1820	for (i = HEAP0; i < N + HEAP0; ++i)
		1821	{
		1822	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1823	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1824	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1825
		1826	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1827	}
		1828	}
		1829
		1830	static void noinline
		1831	array_verify (EV_P_ W *ws, int cnt)
		1832	{
		1833	while (cnt--)
		1834	{
		1835	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1836	verify_watcher (EV_A_ ws [cnt]);
		1837	}
		1838	}
		1839	#endif
		1840
		1841	#if EV_MINIMAL < 2
		1842	void
		1843	ev_loop_verify (EV_P)
		1844	{
		1845	#if EV_VERIFY
		1846	int i;
		1847	WL w;
		1848
		1849	assert (activecnt >= -1);
		1850
		1851	assert (fdchangemax >= fdchangecnt);
		1852	for (i = 0; i < fdchangecnt; ++i)
		1853	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1854
		1855	assert (anfdmax >= 0);
		1856	for (i = 0; i < anfdmax; ++i)
		1857	for (w = anfds [i].head; w; w = w->next)
		1858	{
		1859	verify_watcher (EV_A_ (W)w);
		1860	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1861	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1862	}
		1863
		1864	assert (timermax >= timercnt);
		1865	verify_heap (EV_A_ timers, timercnt);
		1866
		1867	#if EV_PERIODIC_ENABLE
		1868	assert (periodicmax >= periodiccnt);
		1869	verify_heap (EV_A_ periodics, periodiccnt);
		1870	#endif
		1871
		1872	for (i = NUMPRI; i--; )
		1873	{
		1874	assert (pendingmax [i] >= pendingcnt [i]);
		1875	#if EV_IDLE_ENABLE
		1876	assert (idleall >= 0);
		1877	assert (idlemax [i] >= idlecnt [i]);
		1878	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1879	#endif
		1880	}
		1881
		1882	#if EV_FORK_ENABLE
		1883	assert (forkmax >= forkcnt);
		1884	array_verify (EV_A_ (W *)forks, forkcnt);
		1885	#endif
		1886
		1887	#if EV_ASYNC_ENABLE
		1888	assert (asyncmax >= asynccnt);
		1889	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1890	#endif
		1891
		1892	assert (preparemax >= preparecnt);
		1893	array_verify (EV_A_ (W *)prepares, preparecnt);
		1894
		1895	assert (checkmax >= checkcnt);
		1896	array_verify (EV_A_ (W *)checks, checkcnt);
		1897
		1898	# if 0
		1899	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1900	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		1901	# endif
		1902	#endif
1458	}	1903	}
1459	#endif	1904	#endif
1460		1905
1461	#if EV_MULTIPLICITY	1906	#if EV_MULTIPLICITY
1462	struct ev_loop *	1907	struct ev_loop *
…		…
1467	#endif	1912	#endif
1468	{	1913	{
1469	if (!ev_default_loop_ptr)	1914	if (!ev_default_loop_ptr)
1470	{	1915	{
1471	#if EV_MULTIPLICITY	1916	#if EV_MULTIPLICITY
1472	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1917	EV_P = ev_default_loop_ptr = &default_loop_struct;
1473	#else	1918	#else
1474	ev_default_loop_ptr = 1;	1919	ev_default_loop_ptr = 1;
1475	#endif	1920	#endif
1476		1921
1477	loop_init (EV_A_ flags);	1922	loop_init (EV_A_ flags);
…		…
1494		1939
1495	void	1940	void
1496	ev_default_destroy (void)	1941	ev_default_destroy (void)
1497	{	1942	{
1498	#if EV_MULTIPLICITY	1943	#if EV_MULTIPLICITY
1499	struct ev_loop *loop = ev_default_loop_ptr;	1944	EV_P = ev_default_loop_ptr;
1500	#endif	1945	#endif
		1946
		1947	ev_default_loop_ptr = 0;
1501		1948
1502	#ifndef _WIN32	1949	#ifndef _WIN32
1503	ev_ref (EV_A); /* child watcher */	1950	ev_ref (EV_A); /* child watcher */
1504	ev_signal_stop (EV_A_ &childev);	1951	ev_signal_stop (EV_A_ &childev);
1505	#endif	1952	#endif
…		…
1509		1956
1510	void	1957	void
1511	ev_default_fork (void)	1958	ev_default_fork (void)
1512	{	1959	{
1513	#if EV_MULTIPLICITY	1960	#if EV_MULTIPLICITY
1514	struct ev_loop *loop = ev_default_loop_ptr;	1961	EV_P = ev_default_loop_ptr;
1515	#endif	1962	#endif
1516		1963
1517	if (backend)
1518	postfork = 1; /* must be in line with ev_loop_fork */	1964	postfork = 1; /* must be in line with ev_loop_fork */
1519	}	1965	}
1520		1966
1521	/*****************************************************************************/	1967	/*****************************************************************************/
1522		1968
1523	void	1969	void
1524	ev_invoke (EV_P_ void *w, int revents)	1970	ev_invoke (EV_P_ void *w, int revents)
1525	{	1971	{
1526	EV_CB_INVOKE ((W)w, revents);	1972	EV_CB_INVOKE ((W)w, revents);
1527	}	1973	}
1528		1974
1529	void inline_speed	1975	unsigned int
1530	call_pending (EV_P)	1976	ev_pending_count (EV_P)
		1977	{
		1978	int pri;
		1979	unsigned int count = 0;
		1980
		1981	for (pri = NUMPRI; pri--; )
		1982	count += pendingcnt [pri];
		1983
		1984	return count;
		1985	}
		1986
		1987	void noinline
		1988	ev_invoke_pending (EV_P)
1531	{	1989	{
1532	int pri;	1990	int pri;
1533		1991
1534	for (pri = NUMPRI; pri--; )	1992	for (pri = NUMPRI; pri--; )
1535	while (pendingcnt [pri])	1993	while (pendingcnt [pri])
1536	{	1994	{
1537	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1995	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1538		1996
1539	if (expect_true (p->w))
1540	{
1541	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1997	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1998	/* ^ this is no longer true, as pending_w could be here */
1542		1999
1543	p->w->pending = 0;	2000	p->w->pending = 0;
1544	EV_CB_INVOKE (p->w, p->events);	2001	EV_CB_INVOKE (p->w, p->events);
1545	}	2002	EV_FREQUENT_CHECK;
1546	}	2003	}
1547	}	2004	}
1548		2005
1549	#if EV_IDLE_ENABLE	2006	#if EV_IDLE_ENABLE
1550	void inline_size	2007	/* make idle watchers pending. this handles the "call-idle */
		2008	/* only when higher priorities are idle" logic */
		2009	inline_size void
1551	idle_reify (EV_P)	2010	idle_reify (EV_P)
1552	{	2011	{
1553	if (expect_false (idleall))	2012	if (expect_false (idleall))
1554	{	2013	{
1555	int pri;	2014	int pri;
…		…
1567	}	2026	}
1568	}	2027	}
1569	}	2028	}
1570	#endif	2029	#endif
1571		2030
1572	void inline_size	2031	/* make timers pending */
		2032	inline_size void
1573	timers_reify (EV_P)	2033	timers_reify (EV_P)
1574	{	2034	{
		2035	EV_FREQUENT_CHECK;
		2036
1575	while (timercnt && ev_at (timers [HEAP0]) <= mn_now)	2037	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1576	{	2038	{
1577	ev_timer *w = (ev_timer *)timers [HEAP0];	2039	do
1578
1579	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1580
1581	/* first reschedule or stop timer */
1582	if (w->repeat)
1583	{	2040	{
		2041	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2042
		2043	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2044
		2045	/* first reschedule or stop timer */
		2046	if (w->repeat)
		2047	{
		2048	ev_at (w) += w->repeat;
		2049	if (ev_at (w) < mn_now)
		2050	ev_at (w) = mn_now;
		2051
1584	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	2052	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1585		2053
1586	ev_at (w) += w->repeat;	2054	ANHE_at_cache (timers [HEAP0]);
1587	if (ev_at (w) < mn_now)
1588	ev_at (w) = mn_now;
1589
1590	downheap (timers, timercnt, HEAP0);	2055	downheap (timers, timercnt, HEAP0);
		2056	}
		2057	else
		2058	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2059
		2060	EV_FREQUENT_CHECK;
		2061	feed_reverse (EV_A_ (W)w);
1591	}	2062	}
1592	else	2063	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1593	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1594		2064
1595	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	2065	feed_reverse_done (EV_A_ EV_TIMEOUT);
1596	}	2066	}
1597	}	2067	}
1598		2068
1599	#if EV_PERIODIC_ENABLE	2069	#if EV_PERIODIC_ENABLE
1600	void inline_size	2070	/* make periodics pending */
		2071	inline_size void
1601	periodics_reify (EV_P)	2072	periodics_reify (EV_P)
1602	{	2073	{
		2074	EV_FREQUENT_CHECK;
		2075
1603	while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now)	2076	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1604	{	2077	{
1605	ev_periodic *w = (ev_periodic *)periodics [HEAP0];	2078	int feed_count = 0;
1606		2079
1607	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	2080	do
1608
1609	/* first reschedule or stop timer */
1610	if (w->reschedule_cb)
1611	{	2081	{
		2082	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2083
		2084	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2085
		2086	/* first reschedule or stop timer */
		2087	if (w->reschedule_cb)
		2088	{
1612	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);	2089	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2090
1613	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));	2091	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		2092
		2093	ANHE_at_cache (periodics [HEAP0]);
1614	downheap (periodics, periodiccnt, 1);	2094	downheap (periodics, periodiccnt, HEAP0);
		2095	}
		2096	else if (w->interval)
		2097	{
		2098	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2099	/* if next trigger time is not sufficiently in the future, put it there */
		2100	/* this might happen because of floating point inexactness */
		2101	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2102	{
		2103	ev_at (w) += w->interval;
		2104
		2105	/* if interval is unreasonably low we might still have a time in the past */
		2106	/* so correct this. this will make the periodic very inexact, but the user */
		2107	/* has effectively asked to get triggered more often than possible */
		2108	if (ev_at (w) < ev_rt_now)
		2109	ev_at (w) = ev_rt_now;
		2110	}
		2111
		2112	ANHE_at_cache (periodics [HEAP0]);
		2113	downheap (periodics, periodiccnt, HEAP0);
		2114	}
		2115	else
		2116	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2117
		2118	EV_FREQUENT_CHECK;
		2119	feed_reverse (EV_A_ (W)w);
1615	}	2120	}
1616	else if (w->interval)	2121	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1617	{
1618	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1619	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1620	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1621	downheap (periodics, periodiccnt, HEAP0);
1622	}
1623	else
1624	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1625		2122
1626	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	2123	feed_reverse_done (EV_A_ EV_PERIODIC);
1627	}	2124	}
1628	}	2125	}
1629		2126
		2127	/* simply recalculate all periodics */
		2128	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1630	static void noinline	2129	static void noinline
1631	periodics_reschedule (EV_P)	2130	periodics_reschedule (EV_P)
1632	{	2131	{
1633	int i;	2132	int i;
1634		2133
1635	/* adjust periodics after time jump */	2134	/* adjust periodics after time jump */
1636	for (i = 1; i <= periodiccnt; ++i)	2135	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1637	{	2136	{
1638	ev_periodic *w = (ev_periodic *)periodics [i];	2137	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1639		2138
1640	if (w->reschedule_cb)	2139	if (w->reschedule_cb)
1641	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2140	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1642	else if (w->interval)	2141	else if (w->interval)
1643	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2142	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2143
		2144	ANHE_at_cache (periodics [i]);
		2145	}
		2146
		2147	reheap (periodics, periodiccnt);
		2148	}
		2149	#endif
		2150
		2151	/* adjust all timers by a given offset */
		2152	static void noinline
		2153	timers_reschedule (EV_P_ ev_tstamp adjust)
		2154	{
		2155	int i;
		2156
		2157	for (i = 0; i < timercnt; ++i)
1644	}	2158	{
1645		2159	ANHE *he = timers + i + HEAP0;
1646	/* now rebuild the heap */	2160	ANHE_w (*he)->at += adjust;
1647	for (i = periodiccnt >> 1; --i; )	2161	ANHE_at_cache (*he);
1648	downheap (periodics, periodiccnt, i + HEAP0);	2162	}
1649	}	2163	}
1650	#endif
1651		2164
1652	void inline_speed	2165	/* fetch new monotonic and realtime times from the kernel */
		2166	/* also detetc if there was a timejump, and act accordingly */
		2167	inline_speed void
1653	time_update (EV_P_ ev_tstamp max_block)	2168	time_update (EV_P_ ev_tstamp max_block)
1654	{	2169	{
1655	int i;
1656
1657	#if EV_USE_MONOTONIC	2170	#if EV_USE_MONOTONIC
1658	if (expect_true (have_monotonic))	2171	if (expect_true (have_monotonic))
1659	{	2172	{
		2173	int i;
1660	ev_tstamp odiff = rtmn_diff;	2174	ev_tstamp odiff = rtmn_diff;
1661		2175
1662	mn_now = get_clock ();	2176	mn_now = get_clock ();
1663		2177
1664	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2178	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1690	ev_rt_now = ev_time ();	2204	ev_rt_now = ev_time ();
1691	mn_now = get_clock ();	2205	mn_now = get_clock ();
1692	now_floor = mn_now;	2206	now_floor = mn_now;
1693	}	2207	}
1694		2208
		2209	/* no timer adjustment, as the monotonic clock doesn't jump */
		2210	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1695	# if EV_PERIODIC_ENABLE	2211	# if EV_PERIODIC_ENABLE
1696	periodics_reschedule (EV_A);	2212	periodics_reschedule (EV_A);
1697	# endif	2213	# endif
1698	/* no timer adjustment, as the monotonic clock doesn't jump */
1699	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1700	}	2214	}
1701	else	2215	else
1702	#endif	2216	#endif
1703	{	2217	{
1704	ev_rt_now = ev_time ();	2218	ev_rt_now = ev_time ();
1705		2219
1706	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2220	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1707	{	2221	{
		2222	/* adjust timers. this is easy, as the offset is the same for all of them */
		2223	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1708	#if EV_PERIODIC_ENABLE	2224	#if EV_PERIODIC_ENABLE
1709	periodics_reschedule (EV_A);	2225	periodics_reschedule (EV_A);
1710	#endif	2226	#endif
1711	/* adjust timers. this is easy, as the offset is the same for all of them */
1712	for (i = 1; i <= timercnt; ++i)
1713	ev_at (timers [i]) += ev_rt_now - mn_now;
1714	}	2227	}
1715		2228
1716	mn_now = ev_rt_now;	2229	mn_now = ev_rt_now;
1717	}	2230	}
1718	}	2231	}
1719		2232
1720	void	2233	void
1721	ev_ref (EV_P)
1722	{
1723	++activecnt;
1724	}
1725
1726	void
1727	ev_unref (EV_P)
1728	{
1729	--activecnt;
1730	}
1731
1732	static int loop_done;
1733
1734	void
1735	ev_loop (EV_P_ int flags)	2234	ev_loop (EV_P_ int flags)
1736	{	2235	{
		2236	#if EV_MINIMAL < 2
		2237	++loop_depth;
		2238	#endif
		2239
		2240	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2241
1737	loop_done = EVUNLOOP_CANCEL;	2242	loop_done = EVUNLOOP_CANCEL;
1738		2243
1739	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2244	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1740		2245
1741	do	2246	do
1742	{	2247	{
		2248	#if EV_VERIFY >= 2
		2249	ev_loop_verify (EV_A);
		2250	#endif
		2251
1743	#ifndef _WIN32	2252	#ifndef _WIN32
1744	if (expect_false (curpid)) /* penalise the forking check even more */	2253	if (expect_false (curpid)) /* penalise the forking check even more */
1745	if (expect_false (getpid () != curpid))	2254	if (expect_false (getpid () != curpid))
1746	{	2255	{
1747	curpid = getpid ();	2256	curpid = getpid ();
…		…
1753	/* we might have forked, so queue fork handlers */	2262	/* we might have forked, so queue fork handlers */
1754	if (expect_false (postfork))	2263	if (expect_false (postfork))
1755	if (forkcnt)	2264	if (forkcnt)
1756	{	2265	{
1757	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2266	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1758	call_pending (EV_A);	2267	EV_INVOKE_PENDING;
1759	}	2268	}
1760	#endif	2269	#endif
1761		2270
1762	/* queue prepare watchers (and execute them) */	2271	/* queue prepare watchers (and execute them) */
1763	if (expect_false (preparecnt))	2272	if (expect_false (preparecnt))
1764	{	2273	{
1765	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2274	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1766	call_pending (EV_A);	2275	EV_INVOKE_PENDING;
1767	}	2276	}
1768		2277
1769	if (expect_false (!activecnt))	2278	if (expect_false (loop_done))
1770	break;	2279	break;
1771		2280
1772	/* we might have forked, so reify kernel state if necessary */	2281	/* we might have forked, so reify kernel state if necessary */
1773	if (expect_false (postfork))	2282	if (expect_false (postfork))
1774	loop_fork (EV_A);	2283	loop_fork (EV_A);
…		…
1781	ev_tstamp waittime = 0.;	2290	ev_tstamp waittime = 0.;
1782	ev_tstamp sleeptime = 0.;	2291	ev_tstamp sleeptime = 0.;
1783		2292
1784	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2293	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1785	{	2294	{
		2295	/* remember old timestamp for io_blocktime calculation */
		2296	ev_tstamp prev_mn_now = mn_now;
		2297
1786	/* update time to cancel out callback processing overhead */	2298	/* update time to cancel out callback processing overhead */
1787	time_update (EV_A_ 1e100);	2299	time_update (EV_A_ 1e100);
1788		2300
1789	waittime = MAX_BLOCKTIME;	2301	waittime = MAX_BLOCKTIME;
1790		2302
1791	if (timercnt)	2303	if (timercnt)
1792	{	2304	{
1793	ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge;	2305	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1794	if (waittime > to) waittime = to;	2306	if (waittime > to) waittime = to;
1795	}	2307	}
1796		2308
1797	#if EV_PERIODIC_ENABLE	2309	#if EV_PERIODIC_ENABLE
1798	if (periodiccnt)	2310	if (periodiccnt)
1799	{	2311	{
1800	ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2312	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1801	if (waittime > to) waittime = to;	2313	if (waittime > to) waittime = to;
1802	}	2314	}
1803	#endif	2315	#endif
1804		2316
		2317	/* don't let timeouts decrease the waittime below timeout_blocktime */
1805	if (expect_false (waittime < timeout_blocktime))	2318	if (expect_false (waittime < timeout_blocktime))
1806	waittime = timeout_blocktime;	2319	waittime = timeout_blocktime;
1807		2320
1808	sleeptime = waittime - backend_fudge;	2321	/* extra check because io_blocktime is commonly 0 */
1809
1810	if (expect_true (sleeptime > io_blocktime))	2322	if (expect_false (io_blocktime))
1811	sleeptime = io_blocktime;
1812
1813	if (sleeptime)
1814	{	2323	{
		2324	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2325
		2326	if (sleeptime > waittime - backend_fudge)
		2327	sleeptime = waittime - backend_fudge;
		2328
		2329	if (expect_true (sleeptime > 0.))
		2330	{
1815	ev_sleep (sleeptime);	2331	ev_sleep (sleeptime);
1816	waittime -= sleeptime;	2332	waittime -= sleeptime;
		2333	}
1817	}	2334	}
1818	}	2335	}
1819		2336
		2337	#if EV_MINIMAL < 2
1820	++loop_count;	2338	++loop_count;
		2339	#endif
		2340	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1821	backend_poll (EV_A_ waittime);	2341	backend_poll (EV_A_ waittime);
		2342	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1822		2343
1823	/* update ev_rt_now, do magic */	2344	/* update ev_rt_now, do magic */
1824	time_update (EV_A_ waittime + sleeptime);	2345	time_update (EV_A_ waittime + sleeptime);
1825	}	2346	}
1826		2347
…		…
1837		2358
1838	/* queue check watchers, to be executed first */	2359	/* queue check watchers, to be executed first */
1839	if (expect_false (checkcnt))	2360	if (expect_false (checkcnt))
1840	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2361	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1841		2362
1842	call_pending (EV_A);	2363	EV_INVOKE_PENDING;
1843	}	2364	}
1844	while (expect_true (	2365	while (expect_true (
1845	activecnt	2366	activecnt
1846	&& !loop_done	2367	&& !loop_done
1847	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2368	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1848	));	2369	));
1849		2370
1850	if (loop_done == EVUNLOOP_ONE)	2371	if (loop_done == EVUNLOOP_ONE)
1851	loop_done = EVUNLOOP_CANCEL;	2372	loop_done = EVUNLOOP_CANCEL;
		2373
		2374	#if EV_MINIMAL < 2
		2375	--loop_depth;
		2376	#endif
1852	}	2377	}
1853		2378
1854	void	2379	void
1855	ev_unloop (EV_P_ int how)	2380	ev_unloop (EV_P_ int how)
1856	{	2381	{
1857	loop_done = how;	2382	loop_done = how;
1858	}	2383	}
1859		2384
		2385	void
		2386	ev_ref (EV_P)
		2387	{
		2388	++activecnt;
		2389	}
		2390
		2391	void
		2392	ev_unref (EV_P)
		2393	{
		2394	--activecnt;
		2395	}
		2396
		2397	void
		2398	ev_now_update (EV_P)
		2399	{
		2400	time_update (EV_A_ 1e100);
		2401	}
		2402
		2403	void
		2404	ev_suspend (EV_P)
		2405	{
		2406	ev_now_update (EV_A);
		2407	}
		2408
		2409	void
		2410	ev_resume (EV_P)
		2411	{
		2412	ev_tstamp mn_prev = mn_now;
		2413
		2414	ev_now_update (EV_A);
		2415	timers_reschedule (EV_A_ mn_now - mn_prev);
		2416	#if EV_PERIODIC_ENABLE
		2417	/* TODO: really do this? */
		2418	periodics_reschedule (EV_A);
		2419	#endif
		2420	}
		2421
1860	/*****************************************************************************/	2422	/*****************************************************************************/
		2423	/* singly-linked list management, used when the expected list length is short */
1861		2424
1862	void inline_size	2425	inline_size void
1863	wlist_add (WL *head, WL elem)	2426	wlist_add (WL *head, WL elem)
1864	{	2427	{
1865	elem->next = *head;	2428	elem->next = *head;
1866	*head = elem;	2429	*head = elem;
1867	}	2430	}
1868		2431
1869	void inline_size	2432	inline_size void
1870	wlist_del (WL *head, WL elem)	2433	wlist_del (WL *head, WL elem)
1871	{	2434	{
1872	while (*head)	2435	while (*head)
1873	{	2436	{
1874	if (*head == elem)	2437	if (expect_true (*head == elem))
1875	{	2438	{
1876	*head = elem->next;	2439	*head = elem->next;
1877	return;	2440	break;
1878	}	2441	}
1879		2442
1880	head = &(*head)->next;	2443	head = &(*head)->next;
1881	}	2444	}
1882	}	2445	}
1883		2446
1884	void inline_speed	2447	/* internal, faster, version of ev_clear_pending */
		2448	inline_speed void
1885	clear_pending (EV_P_ W w)	2449	clear_pending (EV_P_ W w)
1886	{	2450	{
1887	if (w->pending)	2451	if (w->pending)
1888	{	2452	{
1889	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2453	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1890	w->pending = 0;	2454	w->pending = 0;
1891	}	2455	}
1892	}	2456	}
1893		2457
1894	int	2458	int
…		…
1898	int pending = w_->pending;	2462	int pending = w_->pending;
1899		2463
1900	if (expect_true (pending))	2464	if (expect_true (pending))
1901	{	2465	{
1902	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2466	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2467	p->w = (W)&pending_w;
1903	w_->pending = 0;	2468	w_->pending = 0;
1904	p->w = 0;
1905	return p->events;	2469	return p->events;
1906	}	2470	}
1907	else	2471	else
1908	return 0;	2472	return 0;
1909	}	2473	}
1910		2474
1911	void inline_size	2475	inline_size void
1912	pri_adjust (EV_P_ W w)	2476	pri_adjust (EV_P_ W w)
1913	{	2477	{
1914	int pri = w->priority;	2478	int pri = ev_priority (w);
1915	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2479	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1916	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2480	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1917	w->priority = pri;	2481	ev_set_priority (w, pri);
1918	}	2482	}
1919		2483
1920	void inline_speed	2484	inline_speed void
1921	ev_start (EV_P_ W w, int active)	2485	ev_start (EV_P_ W w, int active)
1922	{	2486	{
1923	pri_adjust (EV_A_ w);	2487	pri_adjust (EV_A_ w);
1924	w->active = active;	2488	w->active = active;
1925	ev_ref (EV_A);	2489	ev_ref (EV_A);
1926	}	2490	}
1927		2491
1928	void inline_size	2492	inline_size void
1929	ev_stop (EV_P_ W w)	2493	ev_stop (EV_P_ W w)
1930	{	2494	{
1931	ev_unref (EV_A);	2495	ev_unref (EV_A);
1932	w->active = 0;	2496	w->active = 0;
1933	}	2497	}
…		…
1940	int fd = w->fd;	2504	int fd = w->fd;
1941		2505
1942	if (expect_false (ev_is_active (w)))	2506	if (expect_false (ev_is_active (w)))
1943	return;	2507	return;
1944		2508
1945	assert (("ev_io_start called with negative fd", fd >= 0));	2509	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2510	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2511
		2512	EV_FREQUENT_CHECK;
1946		2513
1947	ev_start (EV_A_ (W)w, 1);	2514	ev_start (EV_A_ (W)w, 1);
1948	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2515	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1949	wlist_add (&anfds[fd].head, (WL)w);	2516	wlist_add (&anfds[fd].head, (WL)w);
1950		2517
1951	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2518	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1952	w->events &= ~EV_IOFDSET;	2519	w->events &= ~EV__IOFDSET;
		2520
		2521	EV_FREQUENT_CHECK;
1953	}	2522	}
1954		2523
1955	void noinline	2524	void noinline
1956	ev_io_stop (EV_P_ ev_io *w)	2525	ev_io_stop (EV_P_ ev_io *w)
1957	{	2526	{
1958	clear_pending (EV_A_ (W)w);	2527	clear_pending (EV_A_ (W)w);
1959	if (expect_false (!ev_is_active (w)))	2528	if (expect_false (!ev_is_active (w)))
1960	return;	2529	return;
1961		2530
1962	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2531	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2532
		2533	EV_FREQUENT_CHECK;
1963		2534
1964	wlist_del (&anfds[w->fd].head, (WL)w);	2535	wlist_del (&anfds[w->fd].head, (WL)w);
1965	ev_stop (EV_A_ (W)w);	2536	ev_stop (EV_A_ (W)w);
1966		2537
1967	fd_change (EV_A_ w->fd, 1);	2538	fd_change (EV_A_ w->fd, 1);
		2539
		2540	EV_FREQUENT_CHECK;
1968	}	2541	}
1969		2542
1970	void noinline	2543	void noinline
1971	ev_timer_start (EV_P_ ev_timer *w)	2544	ev_timer_start (EV_P_ ev_timer *w)
1972	{	2545	{
1973	if (expect_false (ev_is_active (w)))	2546	if (expect_false (ev_is_active (w)))
1974	return;	2547	return;
1975		2548
1976	ev_at (w) += mn_now;	2549	ev_at (w) += mn_now;
1977		2550
1978	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2551	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1979		2552
		2553	EV_FREQUENT_CHECK;
		2554
		2555	++timercnt;
1980	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);	2556	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1981	array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2);	2557	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1982	timers [ev_active (w)] = (WT)w;	2558	ANHE_w (timers [ev_active (w)]) = (WT)w;
		2559	ANHE_at_cache (timers [ev_active (w)]);
1983	upheap (timers, ev_active (w));	2560	upheap (timers, ev_active (w));
1984		2561
		2562	EV_FREQUENT_CHECK;
		2563
1985	/*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/	2564	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1986	}	2565	}
1987		2566
1988	void noinline	2567	void noinline
1989	ev_timer_stop (EV_P_ ev_timer *w)	2568	ev_timer_stop (EV_P_ ev_timer *w)
1990	{	2569	{
1991	clear_pending (EV_A_ (W)w);	2570	clear_pending (EV_A_ (W)w);
1992	if (expect_false (!ev_is_active (w)))	2571	if (expect_false (!ev_is_active (w)))
1993	return;	2572	return;
1994		2573
		2574	EV_FREQUENT_CHECK;
		2575
1995	{	2576	{
1996	int active = ev_active (w);	2577	int active = ev_active (w);
1997		2578
1998	assert (("internal timer heap corruption", timers [active] == (WT)w));	2579	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1999		2580
		2581	--timercnt;
		2582
2000	if (expect_true (active < timercnt + HEAP0 - 1))	2583	if (expect_true (active < timercnt + HEAP0))
2001	{	2584	{
2002	timers [active] = timers [timercnt + HEAP0 - 1];	2585	timers [active] = timers [timercnt + HEAP0];
2003	adjustheap (timers, timercnt, active);	2586	adjustheap (timers, timercnt, active);
2004	}	2587	}
2005
2006	--timercnt;
2007	}	2588	}
		2589
		2590	EV_FREQUENT_CHECK;
2008		2591
2009	ev_at (w) -= mn_now;	2592	ev_at (w) -= mn_now;
2010		2593
2011	ev_stop (EV_A_ (W)w);	2594	ev_stop (EV_A_ (W)w);
2012	}	2595	}
2013		2596
2014	void noinline	2597	void noinline
2015	ev_timer_again (EV_P_ ev_timer *w)	2598	ev_timer_again (EV_P_ ev_timer *w)
2016	{	2599	{
		2600	EV_FREQUENT_CHECK;
		2601
2017	if (ev_is_active (w))	2602	if (ev_is_active (w))
2018	{	2603	{
2019	if (w->repeat)	2604	if (w->repeat)
2020	{	2605	{
2021	ev_at (w) = mn_now + w->repeat;	2606	ev_at (w) = mn_now + w->repeat;
		2607	ANHE_at_cache (timers [ev_active (w)]);
2022	adjustheap (timers, timercnt, ev_active (w));	2608	adjustheap (timers, timercnt, ev_active (w));
2023	}	2609	}
2024	else	2610	else
2025	ev_timer_stop (EV_A_ w);	2611	ev_timer_stop (EV_A_ w);
2026	}	2612	}
2027	else if (w->repeat)	2613	else if (w->repeat)
2028	{	2614	{
2029	ev_at (w) = w->repeat;	2615	ev_at (w) = w->repeat;
2030	ev_timer_start (EV_A_ w);	2616	ev_timer_start (EV_A_ w);
2031	}	2617	}
		2618
		2619	EV_FREQUENT_CHECK;
		2620	}
		2621
		2622	ev_tstamp
		2623	ev_timer_remaining (EV_P_ ev_timer *w)
		2624	{
		2625	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2032	}	2626	}
2033		2627
2034	#if EV_PERIODIC_ENABLE	2628	#if EV_PERIODIC_ENABLE
2035	void noinline	2629	void noinline
2036	ev_periodic_start (EV_P_ ev_periodic *w)	2630	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
2040		2634
2041	if (w->reschedule_cb)	2635	if (w->reschedule_cb)
2042	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2636	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2043	else if (w->interval)	2637	else if (w->interval)
2044	{	2638	{
2045	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2639	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2046	/* this formula differs from the one in periodic_reify because we do not always round up */	2640	/* this formula differs from the one in periodic_reify because we do not always round up */
2047	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2641	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2048	}	2642	}
2049	else	2643	else
2050	ev_at (w) = w->offset;	2644	ev_at (w) = w->offset;
2051		2645
		2646	EV_FREQUENT_CHECK;
		2647
		2648	++periodiccnt;
2052	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);	2649	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2053	array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2);	2650	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2054	periodics [ev_active (w)] = (WT)w;	2651	ANHE_w (periodics [ev_active (w)]) = (WT)w;
		2652	ANHE_at_cache (periodics [ev_active (w)]);
2055	upheap (periodics, ev_active (w));	2653	upheap (periodics, ev_active (w));
2056		2654
		2655	EV_FREQUENT_CHECK;
		2656
2057	/*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/	2657	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2058	}	2658	}
2059		2659
2060	void noinline	2660	void noinline
2061	ev_periodic_stop (EV_P_ ev_periodic *w)	2661	ev_periodic_stop (EV_P_ ev_periodic *w)
2062	{	2662	{
2063	clear_pending (EV_A_ (W)w);	2663	clear_pending (EV_A_ (W)w);
2064	if (expect_false (!ev_is_active (w)))	2664	if (expect_false (!ev_is_active (w)))
2065	return;	2665	return;
2066		2666
		2667	EV_FREQUENT_CHECK;
		2668
2067	{	2669	{
2068	int active = ev_active (w);	2670	int active = ev_active (w);
2069		2671
2070	assert (("internal periodic heap corruption", periodics [active] == (WT)w));	2672	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2071		2673
		2674	--periodiccnt;
		2675
2072	if (expect_true (active < periodiccnt + HEAP0 - 1))	2676	if (expect_true (active < periodiccnt + HEAP0))
2073	{	2677	{
2074	periodics [active] = periodics [periodiccnt + HEAP0 - 1];	2678	periodics [active] = periodics [periodiccnt + HEAP0];
2075	adjustheap (periodics, periodiccnt, active);	2679	adjustheap (periodics, periodiccnt, active);
2076	}	2680	}
2077
2078	--periodiccnt;
2079	}	2681	}
		2682
		2683	EV_FREQUENT_CHECK;
2080		2684
2081	ev_stop (EV_A_ (W)w);	2685	ev_stop (EV_A_ (W)w);
2082	}	2686	}
2083		2687
2084	void noinline	2688	void noinline
…		…
2095	#endif	2699	#endif
2096		2700
2097	void noinline	2701	void noinline
2098	ev_signal_start (EV_P_ ev_signal *w)	2702	ev_signal_start (EV_P_ ev_signal *w)
2099	{	2703	{
2100	#if EV_MULTIPLICITY
2101	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2102	#endif
2103	if (expect_false (ev_is_active (w)))	2704	if (expect_false (ev_is_active (w)))
2104	return;	2705	return;
2105		2706
2106	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2707	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2107		2708
2108	evpipe_init (EV_A);	2709	#if EV_MULTIPLICITY
		2710	assert (("libev: a signal must not be attached to two different loops",
		2711	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2109		2712
		2713	signals [w->signum - 1].loop = EV_A;
		2714	#endif
		2715
		2716	EV_FREQUENT_CHECK;
		2717
		2718	#if EV_USE_SIGNALFD
		2719	if (sigfd == -2)
2110	{	2720	{
2111	#ifndef _WIN32	2721	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2112	sigset_t full, prev;	2722	if (sigfd < 0 && errno == EINVAL)
2113	sigfillset (&full);	2723	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2114	sigprocmask (SIG_SETMASK, &full, &prev);
2115	#endif
2116		2724
2117	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2725	if (sigfd >= 0)
		2726	{
		2727	fd_intern (sigfd); /* doing it twice will not hurt */
2118		2728
2119	#ifndef _WIN32	2729	sigemptyset (&sigfd_set);
2120	sigprocmask (SIG_SETMASK, &prev, 0);	2730
2121	#endif	2731	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2732	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2733	ev_io_start (EV_A_ &sigfd_w);
		2734	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2735	}
2122	}	2736	}
		2737
		2738	if (sigfd >= 0)
		2739	{
		2740	/* TODO: check .head */
		2741	sigaddset (&sigfd_set, w->signum);
		2742	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2743
		2744	signalfd (sigfd, &sigfd_set, 0);
		2745	}
		2746	#endif
2123		2747
2124	ev_start (EV_A_ (W)w, 1);	2748	ev_start (EV_A_ (W)w, 1);
2125	wlist_add (&signals [w->signum - 1].head, (WL)w);	2749	wlist_add (&signals [w->signum - 1].head, (WL)w);
2126		2750
2127	if (!((WL)w)->next)	2751	if (!((WL)w)->next)
		2752	# if EV_USE_SIGNALFD
		2753	if (sigfd < 0) /*TODO*/
		2754	# endif
2128	{	2755	{
2129	#if _WIN32	2756	# if _WIN32
2130	signal (w->signum, ev_sighandler);	2757	signal (w->signum, ev_sighandler);
2131	#else	2758	# else
2132	struct sigaction sa;	2759	struct sigaction sa;
		2760
		2761	evpipe_init (EV_A);
		2762
2133	sa.sa_handler = ev_sighandler;	2763	sa.sa_handler = ev_sighandler;
2134	sigfillset (&sa.sa_mask);	2764	sigfillset (&sa.sa_mask);
2135	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2765	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2136	sigaction (w->signum, &sa, 0);	2766	sigaction (w->signum, &sa, 0);
		2767
		2768	sigemptyset (&sa.sa_mask);
		2769	sigaddset (&sa.sa_mask, w->signum);
		2770	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2137	#endif	2771	#endif
2138	}	2772	}
		2773
		2774	EV_FREQUENT_CHECK;
2139	}	2775	}
2140		2776
2141	void noinline	2777	void noinline
2142	ev_signal_stop (EV_P_ ev_signal *w)	2778	ev_signal_stop (EV_P_ ev_signal *w)
2143	{	2779	{
2144	clear_pending (EV_A_ (W)w);	2780	clear_pending (EV_A_ (W)w);
2145	if (expect_false (!ev_is_active (w)))	2781	if (expect_false (!ev_is_active (w)))
2146	return;	2782	return;
2147		2783
		2784	EV_FREQUENT_CHECK;
		2785
2148	wlist_del (&signals [w->signum - 1].head, (WL)w);	2786	wlist_del (&signals [w->signum - 1].head, (WL)w);
2149	ev_stop (EV_A_ (W)w);	2787	ev_stop (EV_A_ (W)w);
2150		2788
2151	if (!signals [w->signum - 1].head)	2789	if (!signals [w->signum - 1].head)
		2790	{
		2791	#if EV_MULTIPLICITY
		2792	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2793	#endif
		2794	#if EV_USE_SIGNALFD
		2795	if (sigfd >= 0)
		2796	{
		2797	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2798	sigdelset (&sigfd_set, w->signum);
		2799	signalfd (sigfd, &sigfd_set, 0);
		2800	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2801	/*TODO: maybe unblock signal? */
		2802	}
		2803	else
		2804	#endif
2152	signal (w->signum, SIG_DFL);	2805	signal (w->signum, SIG_DFL);
		2806	}
		2807
		2808	EV_FREQUENT_CHECK;
2153	}	2809	}
2154		2810
2155	void	2811	void
2156	ev_child_start (EV_P_ ev_child *w)	2812	ev_child_start (EV_P_ ev_child *w)
2157	{	2813	{
2158	#if EV_MULTIPLICITY	2814	#if EV_MULTIPLICITY
2159	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2815	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2160	#endif	2816	#endif
2161	if (expect_false (ev_is_active (w)))	2817	if (expect_false (ev_is_active (w)))
2162	return;	2818	return;
2163		2819
		2820	EV_FREQUENT_CHECK;
		2821
2164	ev_start (EV_A_ (W)w, 1);	2822	ev_start (EV_A_ (W)w, 1);
2165	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2823	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2824
		2825	EV_FREQUENT_CHECK;
2166	}	2826	}
2167		2827
2168	void	2828	void
2169	ev_child_stop (EV_P_ ev_child *w)	2829	ev_child_stop (EV_P_ ev_child *w)
2170	{	2830	{
2171	clear_pending (EV_A_ (W)w);	2831	clear_pending (EV_A_ (W)w);
2172	if (expect_false (!ev_is_active (w)))	2832	if (expect_false (!ev_is_active (w)))
2173	return;	2833	return;
2174		2834
		2835	EV_FREQUENT_CHECK;
		2836
2175	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2837	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2176	ev_stop (EV_A_ (W)w);	2838	ev_stop (EV_A_ (W)w);
		2839
		2840	EV_FREQUENT_CHECK;
2177	}	2841	}
2178		2842
2179	#if EV_STAT_ENABLE	2843	#if EV_STAT_ENABLE
2180		2844
2181	# ifdef _WIN32	2845	# ifdef _WIN32
2182	# undef lstat	2846	# undef lstat
2183	# define lstat(a,b) _stati64 (a,b)	2847	# define lstat(a,b) _stati64 (a,b)
2184	# endif	2848	# endif
2185		2849
2186	#define DEF_STAT_INTERVAL 5.0074891	2850	#define DEF_STAT_INTERVAL 5.0074891
		2851	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2187	#define MIN_STAT_INTERVAL 0.1074891	2852	#define MIN_STAT_INTERVAL 0.1074891
2188		2853
2189	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2854	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2190		2855
2191	#if EV_USE_INOTIFY	2856	#if EV_USE_INOTIFY
2192	# define EV_INOTIFY_BUFSIZE 8192	2857	# define EV_INOTIFY_BUFSIZE 8192
…		…
2196	{	2861	{
2197	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);	2862	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);
2198		2863
2199	if (w->wd < 0)	2864	if (w->wd < 0)
2200	{	2865	{
		2866	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2201	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2867	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2202		2868
2203	/* monitor some parent directory for speedup hints */	2869	/* monitor some parent directory for speedup hints */
2204	/* note that exceeding the hardcoded limit is not a correctness issue, */	2870	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2205	/* but an efficiency issue only */	2871	/* but an efficiency issue only */
2206	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2872	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2207	{	2873	{
2208	char path [4096];	2874	char path [4096];
2209	strcpy (path, w->path);	2875	strcpy (path, w->path);
…		…
2213	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2879	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2214	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2880	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2215		2881
2216	char *pend = strrchr (path, '/');	2882	char *pend = strrchr (path, '/');
2217		2883
2218	if (!pend)	2884	if (!pend || pend == path)
2219	break; /* whoops, no '/', complain to your admin */	2885	break;
2220		2886
2221	*pend = 0;	2887	*pend = 0;
2222	w->wd = inotify_add_watch (fs_fd, path, mask);	2888	w->wd = inotify_add_watch (fs_fd, path, mask);
2223	}	2889	}
2224	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2890	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2225	}	2891	}
2226	}	2892	}
2227	else
2228	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2229		2893
2230	if (w->wd >= 0)	2894	if (w->wd >= 0)
		2895	{
		2896	struct statfs sfs;
		2897
2231	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2898	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2899
		2900	/* now local changes will be tracked by inotify, but remote changes won't */
		2901	/* unless the filesystem it known to be local, we therefore still poll */
		2902	/* also do poll on <2.6.25, but with normal frequency */
		2903
		2904	if (fs_2625 && !statfs (w->path, &sfs))
		2905	if (sfs.f_type == 0x1373 /* devfs */
		2906	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2907	|| sfs.f_type == 0x3153464a /* jfs */
		2908	|| sfs.f_type == 0x52654973 /* reiser3 */
		2909	|| sfs.f_type == 0x01021994 /* tempfs */
		2910	|| sfs.f_type == 0x58465342 /* xfs */)
		2911	return;
		2912
		2913	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2914	ev_timer_again (EV_A_ &w->timer);
		2915	}
2232	}	2916	}
2233		2917
2234	static void noinline	2918	static void noinline
2235	infy_del (EV_P_ ev_stat *w)	2919	infy_del (EV_P_ ev_stat *w)
2236	{	2920	{
…		…
2250		2934
2251	static void noinline	2935	static void noinline
2252	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2936	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2253	{	2937	{
2254	if (slot < 0)	2938	if (slot < 0)
2255	/* overflow, need to check for all hahs slots */	2939	/* overflow, need to check for all hash slots */
2256	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2940	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2257	infy_wd (EV_A_ slot, wd, ev);	2941	infy_wd (EV_A_ slot, wd, ev);
2258	else	2942	else
2259	{	2943	{
2260	WL w_;	2944	WL w_;
…		…
2266		2950
2267	if (w->wd == wd || wd == -1)	2951	if (w->wd == wd || wd == -1)
2268	{	2952	{
2269	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2953	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2270	{	2954	{
		2955	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2271	w->wd = -1;	2956	w->wd = -1;
2272	infy_add (EV_A_ w); /* re-add, no matter what */	2957	infy_add (EV_A_ w); /* re-add, no matter what */
2273	}	2958	}
2274		2959
2275	stat_timer_cb (EV_A_ &w->timer, 0);	2960	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2288		2973
2289	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2974	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2290	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2975	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2291	}	2976	}
2292		2977
2293	void inline_size	2978	inline_size void
		2979	check_2625 (EV_P)
		2980	{
		2981	/* kernels < 2.6.25 are borked
		2982	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2983	*/
		2984	struct utsname buf;
		2985	int major, minor, micro;
		2986
		2987	if (uname (&buf))
		2988	return;
		2989
		2990	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2991	return;
		2992
		2993	if (major < 2
		2994	|| (major == 2 && minor < 6)
		2995	|| (major == 2 && minor == 6 && micro < 25))
		2996	return;
		2997
		2998	fs_2625 = 1;
		2999	}
		3000
		3001	inline_size int
		3002	infy_newfd (void)
		3003	{
		3004	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3005	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3006	if (fd >= 0)
		3007	return fd;
		3008	#endif
		3009	return inotify_init ();
		3010	}
		3011
		3012	inline_size void
2294	infy_init (EV_P)	3013	infy_init (EV_P)
2295	{	3014	{
2296	if (fs_fd != -2)	3015	if (fs_fd != -2)
2297	return;	3016	return;
2298		3017
		3018	fs_fd = -1;
		3019
		3020	check_2625 (EV_A);
		3021
2299	fs_fd = inotify_init ();	3022	fs_fd = infy_newfd ();
2300		3023
2301	if (fs_fd >= 0)	3024	if (fs_fd >= 0)
2302	{	3025	{
		3026	fd_intern (fs_fd);
2303	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3027	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2304	ev_set_priority (&fs_w, EV_MAXPRI);	3028	ev_set_priority (&fs_w, EV_MAXPRI);
2305	ev_io_start (EV_A_ &fs_w);	3029	ev_io_start (EV_A_ &fs_w);
2306	}	3030	}
2307	}	3031	}
2308		3032
2309	void inline_size	3033	inline_size void
2310	infy_fork (EV_P)	3034	infy_fork (EV_P)
2311	{	3035	{
2312	int slot;	3036	int slot;
2313		3037
2314	if (fs_fd < 0)	3038	if (fs_fd < 0)
2315	return;	3039	return;
2316		3040
		3041	ev_io_stop (EV_A_ &fs_w);
2317	close (fs_fd);	3042	close (fs_fd);
2318	fs_fd = inotify_init ();	3043	fs_fd = infy_newfd ();
		3044
		3045	if (fs_fd >= 0)
		3046	{
		3047	fd_intern (fs_fd);
		3048	ev_io_set (&fs_w, fs_fd, EV_READ);
		3049	ev_io_start (EV_A_ &fs_w);
		3050	}
2319		3051
2320	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3052	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2321	{	3053	{
2322	WL w_ = fs_hash [slot].head;	3054	WL w_ = fs_hash [slot].head;
2323	fs_hash [slot].head = 0;	3055	fs_hash [slot].head = 0;
…		…
2330	w->wd = -1;	3062	w->wd = -1;
2331		3063
2332	if (fs_fd >= 0)	3064	if (fs_fd >= 0)
2333	infy_add (EV_A_ w); /* re-add, no matter what */	3065	infy_add (EV_A_ w); /* re-add, no matter what */
2334	else	3066	else
2335	ev_timer_start (EV_A_ &w->timer);	3067	ev_timer_again (EV_A_ &w->timer);
2336	}	3068	}
2337
2338	}	3069	}
2339	}	3070	}
2340		3071
		3072	#endif
		3073
		3074	#ifdef _WIN32
		3075	# define EV_LSTAT(p,b) _stati64 (p, b)
		3076	#else
		3077	# define EV_LSTAT(p,b) lstat (p, b)
2341	#endif	3078	#endif
2342		3079
2343	void	3080	void
2344	ev_stat_stat (EV_P_ ev_stat *w)	3081	ev_stat_stat (EV_P_ ev_stat *w)
2345	{	3082	{
…		…
2372	|| w->prev.st_atime != w->attr.st_atime	3109	|| w->prev.st_atime != w->attr.st_atime
2373	|| w->prev.st_mtime != w->attr.st_mtime	3110	|| w->prev.st_mtime != w->attr.st_mtime
2374	|| w->prev.st_ctime != w->attr.st_ctime	3111	|| w->prev.st_ctime != w->attr.st_ctime
2375	) {	3112	) {
2376	#if EV_USE_INOTIFY	3113	#if EV_USE_INOTIFY
		3114	if (fs_fd >= 0)
		3115	{
2377	infy_del (EV_A_ w);	3116	infy_del (EV_A_ w);
2378	infy_add (EV_A_ w);	3117	infy_add (EV_A_ w);
2379	ev_stat_stat (EV_A_ w); /* avoid race... */	3118	ev_stat_stat (EV_A_ w); /* avoid race... */
		3119	}
2380	#endif	3120	#endif
2381		3121
2382	ev_feed_event (EV_A_ w, EV_STAT);	3122	ev_feed_event (EV_A_ w, EV_STAT);
2383	}	3123	}
2384	}	3124	}
…		…
2387	ev_stat_start (EV_P_ ev_stat *w)	3127	ev_stat_start (EV_P_ ev_stat *w)
2388	{	3128	{
2389	if (expect_false (ev_is_active (w)))	3129	if (expect_false (ev_is_active (w)))
2390	return;	3130	return;
2391		3131
2392	/* since we use memcmp, we need to clear any padding data etc. */
2393	memset (&w->prev, 0, sizeof (ev_statdata));
2394	memset (&w->attr, 0, sizeof (ev_statdata));
2395
2396	ev_stat_stat (EV_A_ w);	3132	ev_stat_stat (EV_A_ w);
2397		3133
		3134	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2398	if (w->interval < MIN_STAT_INTERVAL)	3135	w->interval = MIN_STAT_INTERVAL;
2399	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2400		3136
2401	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3137	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2402	ev_set_priority (&w->timer, ev_priority (w));	3138	ev_set_priority (&w->timer, ev_priority (w));
2403		3139
2404	#if EV_USE_INOTIFY	3140	#if EV_USE_INOTIFY
2405	infy_init (EV_A);	3141	infy_init (EV_A);
2406		3142
2407	if (fs_fd >= 0)	3143	if (fs_fd >= 0)
2408	infy_add (EV_A_ w);	3144	infy_add (EV_A_ w);
2409	else	3145	else
2410	#endif	3146	#endif
2411	ev_timer_start (EV_A_ &w->timer);	3147	ev_timer_again (EV_A_ &w->timer);
2412		3148
2413	ev_start (EV_A_ (W)w, 1);	3149	ev_start (EV_A_ (W)w, 1);
		3150
		3151	EV_FREQUENT_CHECK;
2414	}	3152	}
2415		3153
2416	void	3154	void
2417	ev_stat_stop (EV_P_ ev_stat *w)	3155	ev_stat_stop (EV_P_ ev_stat *w)
2418	{	3156	{
2419	clear_pending (EV_A_ (W)w);	3157	clear_pending (EV_A_ (W)w);
2420	if (expect_false (!ev_is_active (w)))	3158	if (expect_false (!ev_is_active (w)))
2421	return;	3159	return;
2422		3160
		3161	EV_FREQUENT_CHECK;
		3162
2423	#if EV_USE_INOTIFY	3163	#if EV_USE_INOTIFY
2424	infy_del (EV_A_ w);	3164	infy_del (EV_A_ w);
2425	#endif	3165	#endif
2426	ev_timer_stop (EV_A_ &w->timer);	3166	ev_timer_stop (EV_A_ &w->timer);
2427		3167
2428	ev_stop (EV_A_ (W)w);	3168	ev_stop (EV_A_ (W)w);
		3169
		3170	EV_FREQUENT_CHECK;
2429	}	3171	}
2430	#endif	3172	#endif
2431		3173
2432	#if EV_IDLE_ENABLE	3174	#if EV_IDLE_ENABLE
2433	void	3175	void
…		…
2435	{	3177	{
2436	if (expect_false (ev_is_active (w)))	3178	if (expect_false (ev_is_active (w)))
2437	return;	3179	return;
2438		3180
2439	pri_adjust (EV_A_ (W)w);	3181	pri_adjust (EV_A_ (W)w);
		3182
		3183	EV_FREQUENT_CHECK;
2440		3184
2441	{	3185	{
2442	int active = ++idlecnt [ABSPRI (w)];	3186	int active = ++idlecnt [ABSPRI (w)];
2443		3187
2444	++idleall;	3188	++idleall;
2445	ev_start (EV_A_ (W)w, active);	3189	ev_start (EV_A_ (W)w, active);
2446		3190
2447	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	3191	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2448	idles [ABSPRI (w)][active - 1] = w;	3192	idles [ABSPRI (w)][active - 1] = w;
2449	}	3193	}
		3194
		3195	EV_FREQUENT_CHECK;
2450	}	3196	}
2451		3197
2452	void	3198	void
2453	ev_idle_stop (EV_P_ ev_idle *w)	3199	ev_idle_stop (EV_P_ ev_idle *w)
2454	{	3200	{
2455	clear_pending (EV_A_ (W)w);	3201	clear_pending (EV_A_ (W)w);
2456	if (expect_false (!ev_is_active (w)))	3202	if (expect_false (!ev_is_active (w)))
2457	return;	3203	return;
2458		3204
		3205	EV_FREQUENT_CHECK;
		3206
2459	{	3207	{
2460	int active = ev_active (w);	3208	int active = ev_active (w);
2461		3209
2462	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3210	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2463	ev_active (idles [ABSPRI (w)][active - 1]) = active;	3211	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2464		3212
2465	ev_stop (EV_A_ (W)w);	3213	ev_stop (EV_A_ (W)w);
2466	--idleall;	3214	--idleall;
2467	}	3215	}
		3216
		3217	EV_FREQUENT_CHECK;
2468	}	3218	}
2469	#endif	3219	#endif
2470		3220
2471	void	3221	void
2472	ev_prepare_start (EV_P_ ev_prepare *w)	3222	ev_prepare_start (EV_P_ ev_prepare *w)
2473	{	3223	{
2474	if (expect_false (ev_is_active (w)))	3224	if (expect_false (ev_is_active (w)))
2475	return;	3225	return;
		3226
		3227	EV_FREQUENT_CHECK;
2476		3228
2477	ev_start (EV_A_ (W)w, ++preparecnt);	3229	ev_start (EV_A_ (W)w, ++preparecnt);
2478	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3230	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2479	prepares [preparecnt - 1] = w;	3231	prepares [preparecnt - 1] = w;
		3232
		3233	EV_FREQUENT_CHECK;
2480	}	3234	}
2481		3235
2482	void	3236	void
2483	ev_prepare_stop (EV_P_ ev_prepare *w)	3237	ev_prepare_stop (EV_P_ ev_prepare *w)
2484	{	3238	{
2485	clear_pending (EV_A_ (W)w);	3239	clear_pending (EV_A_ (W)w);
2486	if (expect_false (!ev_is_active (w)))	3240	if (expect_false (!ev_is_active (w)))
2487	return;	3241	return;
2488		3242
		3243	EV_FREQUENT_CHECK;
		3244
2489	{	3245	{
2490	int active = ev_active (w);	3246	int active = ev_active (w);
2491		3247
2492	prepares [active - 1] = prepares [--preparecnt];	3248	prepares [active - 1] = prepares [--preparecnt];
2493	ev_active (prepares [active - 1]) = active;	3249	ev_active (prepares [active - 1]) = active;
2494	}	3250	}
2495		3251
2496	ev_stop (EV_A_ (W)w);	3252	ev_stop (EV_A_ (W)w);
		3253
		3254	EV_FREQUENT_CHECK;
2497	}	3255	}
2498		3256
2499	void	3257	void
2500	ev_check_start (EV_P_ ev_check *w)	3258	ev_check_start (EV_P_ ev_check *w)
2501	{	3259	{
2502	if (expect_false (ev_is_active (w)))	3260	if (expect_false (ev_is_active (w)))
2503	return;	3261	return;
		3262
		3263	EV_FREQUENT_CHECK;
2504		3264
2505	ev_start (EV_A_ (W)w, ++checkcnt);	3265	ev_start (EV_A_ (W)w, ++checkcnt);
2506	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3266	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2507	checks [checkcnt - 1] = w;	3267	checks [checkcnt - 1] = w;
		3268
		3269	EV_FREQUENT_CHECK;
2508	}	3270	}
2509		3271
2510	void	3272	void
2511	ev_check_stop (EV_P_ ev_check *w)	3273	ev_check_stop (EV_P_ ev_check *w)
2512	{	3274	{
2513	clear_pending (EV_A_ (W)w);	3275	clear_pending (EV_A_ (W)w);
2514	if (expect_false (!ev_is_active (w)))	3276	if (expect_false (!ev_is_active (w)))
2515	return;	3277	return;
2516		3278
		3279	EV_FREQUENT_CHECK;
		3280
2517	{	3281	{
2518	int active = ev_active (w);	3282	int active = ev_active (w);
2519		3283
2520	checks [active - 1] = checks [--checkcnt];	3284	checks [active - 1] = checks [--checkcnt];
2521	ev_active (checks [active - 1]) = active;	3285	ev_active (checks [active - 1]) = active;
2522	}	3286	}
2523		3287
2524	ev_stop (EV_A_ (W)w);	3288	ev_stop (EV_A_ (W)w);
		3289
		3290	EV_FREQUENT_CHECK;
2525	}	3291	}
2526		3292
2527	#if EV_EMBED_ENABLE	3293	#if EV_EMBED_ENABLE
2528	void noinline	3294	void noinline
2529	ev_embed_sweep (EV_P_ ev_embed *w)	3295	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2546	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3312	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2547	{	3313	{
2548	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3314	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2549		3315
2550	{	3316	{
2551	struct ev_loop *loop = w->other;	3317	EV_P = w->other;
2552		3318
2553	while (fdchangecnt)	3319	while (fdchangecnt)
2554	{	3320	{
2555	fd_reify (EV_A);	3321	fd_reify (EV_A);
2556	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3322	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2557	}	3323	}
2558	}	3324	}
2559	}	3325	}
2560		3326
		3327	static void
		3328	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3329	{
		3330	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3331
		3332	ev_embed_stop (EV_A_ w);
		3333
		3334	{
		3335	EV_P = w->other;
		3336
		3337	ev_loop_fork (EV_A);
		3338	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3339	}
		3340
		3341	ev_embed_start (EV_A_ w);
		3342	}
		3343
2561	#if 0	3344	#if 0
2562	static void	3345	static void
2563	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3346	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2564	{	3347	{
2565	ev_idle_stop (EV_A_ idle);	3348	ev_idle_stop (EV_A_ idle);
…		…
2571	{	3354	{
2572	if (expect_false (ev_is_active (w)))	3355	if (expect_false (ev_is_active (w)))
2573	return;	3356	return;
2574		3357
2575	{	3358	{
2576	struct ev_loop *loop = w->other;	3359	EV_P = w->other;
2577	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3360	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2578	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3361	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2579	}	3362	}
		3363
		3364	EV_FREQUENT_CHECK;
2580		3365
2581	ev_set_priority (&w->io, ev_priority (w));	3366	ev_set_priority (&w->io, ev_priority (w));
2582	ev_io_start (EV_A_ &w->io);	3367	ev_io_start (EV_A_ &w->io);
2583		3368
2584	ev_prepare_init (&w->prepare, embed_prepare_cb);	3369	ev_prepare_init (&w->prepare, embed_prepare_cb);
2585	ev_set_priority (&w->prepare, EV_MINPRI);	3370	ev_set_priority (&w->prepare, EV_MINPRI);
2586	ev_prepare_start (EV_A_ &w->prepare);	3371	ev_prepare_start (EV_A_ &w->prepare);
2587		3372
		3373	ev_fork_init (&w->fork, embed_fork_cb);
		3374	ev_fork_start (EV_A_ &w->fork);
		3375
2588	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3376	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2589		3377
2590	ev_start (EV_A_ (W)w, 1);	3378	ev_start (EV_A_ (W)w, 1);
		3379
		3380	EV_FREQUENT_CHECK;
2591	}	3381	}
2592		3382
2593	void	3383	void
2594	ev_embed_stop (EV_P_ ev_embed *w)	3384	ev_embed_stop (EV_P_ ev_embed *w)
2595	{	3385	{
2596	clear_pending (EV_A_ (W)w);	3386	clear_pending (EV_A_ (W)w);
2597	if (expect_false (!ev_is_active (w)))	3387	if (expect_false (!ev_is_active (w)))
2598	return;	3388	return;
2599		3389
		3390	EV_FREQUENT_CHECK;
		3391
2600	ev_io_stop (EV_A_ &w->io);	3392	ev_io_stop (EV_A_ &w->io);
2601	ev_prepare_stop (EV_A_ &w->prepare);	3393	ev_prepare_stop (EV_A_ &w->prepare);
		3394	ev_fork_stop (EV_A_ &w->fork);
2602		3395
2603	ev_stop (EV_A_ (W)w);	3396	EV_FREQUENT_CHECK;
2604	}	3397	}
2605	#endif	3398	#endif
2606		3399
2607	#if EV_FORK_ENABLE	3400	#if EV_FORK_ENABLE
2608	void	3401	void
2609	ev_fork_start (EV_P_ ev_fork *w)	3402	ev_fork_start (EV_P_ ev_fork *w)
2610	{	3403	{
2611	if (expect_false (ev_is_active (w)))	3404	if (expect_false (ev_is_active (w)))
2612	return;	3405	return;
		3406
		3407	EV_FREQUENT_CHECK;
2613		3408
2614	ev_start (EV_A_ (W)w, ++forkcnt);	3409	ev_start (EV_A_ (W)w, ++forkcnt);
2615	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3410	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2616	forks [forkcnt - 1] = w;	3411	forks [forkcnt - 1] = w;
		3412
		3413	EV_FREQUENT_CHECK;
2617	}	3414	}
2618		3415
2619	void	3416	void
2620	ev_fork_stop (EV_P_ ev_fork *w)	3417	ev_fork_stop (EV_P_ ev_fork *w)
2621	{	3418	{
2622	clear_pending (EV_A_ (W)w);	3419	clear_pending (EV_A_ (W)w);
2623	if (expect_false (!ev_is_active (w)))	3420	if (expect_false (!ev_is_active (w)))
2624	return;	3421	return;
2625		3422
		3423	EV_FREQUENT_CHECK;
		3424
2626	{	3425	{
2627	int active = ev_active (w);	3426	int active = ev_active (w);
2628		3427
2629	forks [active - 1] = forks [--forkcnt];	3428	forks [active - 1] = forks [--forkcnt];
2630	ev_active (forks [active - 1]) = active;	3429	ev_active (forks [active - 1]) = active;
2631	}	3430	}
2632		3431
2633	ev_stop (EV_A_ (W)w);	3432	ev_stop (EV_A_ (W)w);
		3433
		3434	EV_FREQUENT_CHECK;
2634	}	3435	}
2635	#endif	3436	#endif
2636		3437
2637	#if EV_ASYNC_ENABLE	3438	#if EV_ASYNC_ENABLE
2638	void	3439	void
…		…
2640	{	3441	{
2641	if (expect_false (ev_is_active (w)))	3442	if (expect_false (ev_is_active (w)))
2642	return;	3443	return;
2643		3444
2644	evpipe_init (EV_A);	3445	evpipe_init (EV_A);
		3446
		3447	EV_FREQUENT_CHECK;
2645		3448
2646	ev_start (EV_A_ (W)w, ++asynccnt);	3449	ev_start (EV_A_ (W)w, ++asynccnt);
2647	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3450	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2648	asyncs [asynccnt - 1] = w;	3451	asyncs [asynccnt - 1] = w;
		3452
		3453	EV_FREQUENT_CHECK;
2649	}	3454	}
2650		3455
2651	void	3456	void
2652	ev_async_stop (EV_P_ ev_async *w)	3457	ev_async_stop (EV_P_ ev_async *w)
2653	{	3458	{
2654	clear_pending (EV_A_ (W)w);	3459	clear_pending (EV_A_ (W)w);
2655	if (expect_false (!ev_is_active (w)))	3460	if (expect_false (!ev_is_active (w)))
2656	return;	3461	return;
2657		3462
		3463	EV_FREQUENT_CHECK;
		3464
2658	{	3465	{
2659	int active = ev_active (w);	3466	int active = ev_active (w);
2660		3467
2661	asyncs [active - 1] = asyncs [--asynccnt];	3468	asyncs [active - 1] = asyncs [--asynccnt];
2662	ev_active (asyncs [active - 1]) = active;	3469	ev_active (asyncs [active - 1]) = active;
2663	}	3470	}
2664		3471
2665	ev_stop (EV_A_ (W)w);	3472	ev_stop (EV_A_ (W)w);
		3473
		3474	EV_FREQUENT_CHECK;
2666	}	3475	}
2667		3476
2668	void	3477	void
2669	ev_async_send (EV_P_ ev_async *w)	3478	ev_async_send (EV_P_ ev_async *w)
2670	{	3479	{
2671	w->sent = 1;	3480	w->sent = 1;
2672	evpipe_write (EV_A_ &gotasync);	3481	evpipe_write (EV_A_ &async_pending);
2673	}	3482	}
2674	#endif	3483	#endif
2675		3484
2676	/*****************************************************************************/	3485	/*****************************************************************************/
2677		3486
…		…
2687	once_cb (EV_P_ struct ev_once *once, int revents)	3496	once_cb (EV_P_ struct ev_once *once, int revents)
2688	{	3497	{
2689	void (*cb)(int revents, void *arg) = once->cb;	3498	void (*cb)(int revents, void *arg) = once->cb;
2690	void *arg = once->arg;	3499	void *arg = once->arg;
2691		3500
2692	ev_io_stop (EV_A_ &once->io);	3501	ev_io_stop (EV_A_ &once->io);
2693	ev_timer_stop (EV_A_ &once->to);	3502	ev_timer_stop (EV_A_ &once->to);
2694	ev_free (once);	3503	ev_free (once);
2695		3504
2696	cb (revents, arg);	3505	cb (revents, arg);
2697	}	3506	}
2698		3507
2699	static void	3508	static void
2700	once_cb_io (EV_P_ ev_io *w, int revents)	3509	once_cb_io (EV_P_ ev_io *w, int revents)
2701	{	3510	{
2702	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3511	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3512
		3513	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2703	}	3514	}
2704		3515
2705	static void	3516	static void
2706	once_cb_to (EV_P_ ev_timer *w, int revents)	3517	once_cb_to (EV_P_ ev_timer *w, int revents)
2707	{	3518	{
2708	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3519	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3520
		3521	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2709	}	3522	}
2710		3523
2711	void	3524	void
2712	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3525	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2713	{	3526	{
…		…
2735	ev_timer_set (&once->to, timeout, 0.);	3548	ev_timer_set (&once->to, timeout, 0.);
2736	ev_timer_start (EV_A_ &once->to);	3549	ev_timer_start (EV_A_ &once->to);
2737	}	3550	}
2738	}	3551	}
2739		3552
		3553	/*****************************************************************************/
		3554
		3555	#if EV_WALK_ENABLE
		3556	void
		3557	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3558	{
		3559	int i, j;
		3560	ev_watcher_list *wl, *wn;
		3561
		3562	if (types & (EV_IO | EV_EMBED))
		3563	for (i = 0; i < anfdmax; ++i)
		3564	for (wl = anfds [i].head; wl; )
		3565	{
		3566	wn = wl->next;
		3567
		3568	#if EV_EMBED_ENABLE
		3569	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3570	{
		3571	if (types & EV_EMBED)
		3572	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3573	}
		3574	else
		3575	#endif
		3576	#if EV_USE_INOTIFY
		3577	if (ev_cb ((ev_io *)wl) == infy_cb)
		3578	;
		3579	else
		3580	#endif
		3581	if ((ev_io *)wl != &pipe_w)
		3582	if (types & EV_IO)
		3583	cb (EV_A_ EV_IO, wl);
		3584
		3585	wl = wn;
		3586	}
		3587
		3588	if (types & (EV_TIMER | EV_STAT))
		3589	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3590	#if EV_STAT_ENABLE
		3591	/*TODO: timer is not always active*/
		3592	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3593	{
		3594	if (types & EV_STAT)
		3595	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3596	}
		3597	else
		3598	#endif
		3599	if (types & EV_TIMER)
		3600	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3601
		3602	#if EV_PERIODIC_ENABLE
		3603	if (types & EV_PERIODIC)
		3604	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3605	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3606	#endif
		3607
		3608	#if EV_IDLE_ENABLE
		3609	if (types & EV_IDLE)
		3610	for (j = NUMPRI; i--; )
		3611	for (i = idlecnt [j]; i--; )
		3612	cb (EV_A_ EV_IDLE, idles [j][i]);
		3613	#endif
		3614
		3615	#if EV_FORK_ENABLE
		3616	if (types & EV_FORK)
		3617	for (i = forkcnt; i--; )
		3618	if (ev_cb (forks [i]) != embed_fork_cb)
		3619	cb (EV_A_ EV_FORK, forks [i]);
		3620	#endif
		3621
		3622	#if EV_ASYNC_ENABLE
		3623	if (types & EV_ASYNC)
		3624	for (i = asynccnt; i--; )
		3625	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3626	#endif
		3627
		3628	if (types & EV_PREPARE)
		3629	for (i = preparecnt; i--; )
		3630	#if EV_EMBED_ENABLE
		3631	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3632	#endif
		3633	cb (EV_A_ EV_PREPARE, prepares [i]);
		3634
		3635	if (types & EV_CHECK)
		3636	for (i = checkcnt; i--; )
		3637	cb (EV_A_ EV_CHECK, checks [i]);
		3638
		3639	if (types & EV_SIGNAL)
		3640	for (i = 0; i < EV_NSIG - 1; ++i)
		3641	for (wl = signals [i].head; wl; )
		3642	{
		3643	wn = wl->next;
		3644	cb (EV_A_ EV_SIGNAL, wl);
		3645	wl = wn;
		3646	}
		3647
		3648	if (types & EV_CHILD)
		3649	for (i = EV_PID_HASHSIZE; i--; )
		3650	for (wl = childs [i]; wl; )
		3651	{
		3652	wn = wl->next;
		3653	cb (EV_A_ EV_CHILD, wl);
		3654	wl = wn;
		3655	}
		3656	/* EV_STAT 0x00001000 /* stat data changed */
		3657	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3658	}
		3659	#endif
		3660
2740	#if EV_MULTIPLICITY	3661	#if EV_MULTIPLICITY
2741	#include "ev_wrap.h"	3662	#include "ev_wrap.h"
2742	#endif	3663	#endif
2743		3664
2744	#ifdef __cplusplus	3665	#ifdef __cplusplus

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