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Comparing libev/ev.c (file contents):
Revision 1.238 by root, Thu May 8 20:49:12 2008 UTC vs.
Revision 1.318 by root, Tue Nov 17 00:22:28 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	#define USE_4HEAP 1/* they do not work corretcly */
772	#if USE_4HEAP	1029	#if EV_USE_4HEAP
773		1030
774	#define DHEAP 4	1031	#define DHEAP 4
775	#define HEAP0 (DHEAP - 1) /* 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))
776		1035
777	/* towards the root */	1036	/* away from the root */
778	void inline_speed	1037	inline_speed void
779	upheap (WT *heap, int k)	1038	downheap (ANHE *heap, int N, int k)
780	{	1039	{
781	WT w = heap [k];	1040	ANHE he = heap [k];
		1041	ANHE *E = heap + N + HEAP0;
782		1042
783	for (;;)	1043	for (;;)
784	{	1044	{
785	int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
786
787	if (p == k || heap [p]->at <= w->at)
788	break;
789
790	heap [k] = heap [p];
791	ev_active (heap [k]) = k;
792	k = p;
793	}
794
795	heap [k] = w;
796	ev_active (heap [k]) = k;
797	}
798
799	/* away from the root */
800	void inline_speed
801	downheap (WT *heap, int N, int k)
802	{
803	WT w = heap [k];
804	WT *E = heap + N + HEAP0;
805
806	for (;;)
807	{
808	ev_tstamp minat;	1045	ev_tstamp minat;
809	WT *minpos;	1046	ANHE *minpos;
810	WT *pos = heap + DHEAP * (k - HEAP0) + HEAP0;	1047	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
811		1048
812	// find minimum child	1049	/* find minimum child */
813	if (expect_true (pos + DHEAP - 1 < E))	1050	if (expect_true (pos + DHEAP - 1 < E))
814	{	1051	{
815	/* fast path */
816	(minpos = pos + 0), (minat = (*minpos)->at);	1052	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
817	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));
818	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));
819	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));
820	}	1063	}
821	else	1064	else
822	{
823	/* slow path */
824	if (pos >= E)
825	break;
826	(minpos = pos + 0), (minat = (*minpos)->at);
827	if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
828	if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
829	if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
830	}
831
832	if (w->at <= minat)
833	break;	1065	break;
834		1066
835	ev_active (*minpos) = k;	1067	if (ANHE_at (he) <= minat)
		1068	break;
		1069
836	heap [k] = *minpos;	1070	heap [k] = *minpos;
		1071	ev_active (ANHE_w (*minpos)) = k;
837		1072
838	k = minpos - heap;	1073	k = minpos - heap;
839	}	1074	}
840		1075
841	heap [k] = w;	1076	heap [k] = he;
842	ev_active (heap [k]) = k;	1077	ev_active (ANHE_w (he)) = k;
843	}	1078	}
844		1079
845	#else // 4HEAP	1080	#else /* 4HEAP */
846		1081
847	#define HEAP0 1	1082	#define HEAP0 1
		1083	#define HPARENT(k) ((k) >> 1)
		1084	#define UPHEAP_DONE(p,k) (!(p))
848		1085
849	/* towards the root */	1086	/* away from the root */
850	void inline_speed	1087	inline_speed void
851	upheap (WT *heap, int k)	1088	downheap (ANHE *heap, int N, int k)
852	{	1089	{
853	WT w = heap [k];	1090	ANHE he = heap [k];
854		1091
855	for (;;)	1092	for (;;)
856	{	1093	{
857	int p = k >> 1;	1094	int c = k << 1;
858		1095
859	/* maybe we could use a dummy element at heap [0]? */	1096	if (c >= N + HEAP0)
860	if (!p || heap [p]->at <= w->at)
861	break;	1097	break;
862		1098
863	heap [k] = heap [p];	1099	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
864	ev_active (heap [k]) = k;	1100	? 1 : 0;
865	k = p;
866	}
867		1101
868	heap [k] = w;	1102	if (ANHE_at (he) <= ANHE_at (heap [c]))
869	ev_active (heap [k]) = k;
870	}
871
872	/* away from the root */
873	void inline_speed
874	downheap (WT *heap, int N, int k)
875	{
876	WT w = heap [k];
877
878	for (;;)
879	{
880	int c = k << 1;
881
882	if (c > N)
883	break;	1103	break;
884		1104
885	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
886	? 1 : 0;
887
888	if (w->at <= heap [c]->at)
889	break;
890
891	heap [k] = heap [c];	1105	heap [k] = heap [c];
892	((W)heap [k])->active = k;	1106	ev_active (ANHE_w (heap [k])) = k;
893		1107
894	k = c;	1108	k = c;
895	}	1109	}
896		1110
897	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];
898	ev_active (heap [k]) = k;	1130	ev_active (ANHE_w (heap [k])) = k;
899	}	1131	k = p;
900	#endif	1132	}
901		1133
902	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
903	adjustheap (WT *heap, int N, int k)	1140	adjustheap (ANHE *heap, int N, int k)
904	{	1141	{
		1142	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
905	upheap (heap, k);	1143	upheap (heap, k);
		1144	else
906	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);
907	}	1158	}
908		1159
909	/*****************************************************************************/	1160	/*****************************************************************************/
910		1161
		1162	/* associate signal watchers to a signal signal */
911	typedef struct	1163	typedef struct
912	{	1164	{
		1165	EV_ATOMIC_T pending;
		1166	#if EV_MULTIPLICITY
		1167	EV_P;
		1168	#endif
913	WL head;	1169	WL head;
914	EV_ATOMIC_T gotsig;
915	} ANSIG;	1170	} ANSIG;
916		1171
917	static ANSIG *signals;	1172	static ANSIG signals [EV_NSIG - 1];
918	static int signalmax;
919
920	static EV_ATOMIC_T gotsig;
921
922	void inline_size
923	signals_init (ANSIG *base, int count)
924	{
925	while (count--)
926	{
927	base->head = 0;
928	base->gotsig = 0;
929
930	++base;
931	}
932	}
933		1173
934	/*****************************************************************************/	1174	/*****************************************************************************/
935		1175
936	void inline_speed	1176	/* used to prepare libev internal fd's */
		1177	/* this is not fork-safe */
		1178	inline_speed void
937	fd_intern (int fd)	1179	fd_intern (int fd)
938	{	1180	{
939	#ifdef _WIN32	1181	#ifdef _WIN32
940	int arg = 1;	1182	unsigned long arg = 1;
941	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1183	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
942	#else	1184	#else
943	fcntl (fd, F_SETFD, FD_CLOEXEC);	1185	fcntl (fd, F_SETFD, FD_CLOEXEC);
944	fcntl (fd, F_SETFL, O_NONBLOCK);	1186	fcntl (fd, F_SETFL, O_NONBLOCK);
945	#endif	1187	#endif
946	}	1188	}
947		1189
948	static void noinline	1190	static void noinline
949	evpipe_init (EV_P)	1191	evpipe_init (EV_P)
950	{	1192	{
951	if (!ev_is_active (&pipeev))	1193	if (!ev_is_active (&pipe_w))
952	{	1194	{
953	#if EV_USE_EVENTFD	1195	#if EV_USE_EVENTFD
		1196	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1197	if (evfd < 0 && errno == EINVAL)
954	if ((evfd = eventfd (0, 0)) >= 0)	1198	evfd = eventfd (0, 0);
		1199
		1200	if (evfd >= 0)
955	{	1201	{
956	evpipe [0] = -1;	1202	evpipe [0] = -1;
957	fd_intern (evfd);	1203	fd_intern (evfd); /* doing it twice doesn't hurt */
958	ev_io_set (&pipeev, evfd, EV_READ);	1204	ev_io_set (&pipe_w, evfd, EV_READ);
959	}	1205	}
960	else	1206	else
961	#endif	1207	#endif
962	{	1208	{
963	while (pipe (evpipe))	1209	while (pipe (evpipe))
964	syserr ("(libev) error creating signal/async pipe");	1210	ev_syserr ("(libev) error creating signal/async pipe");
965		1211
966	fd_intern (evpipe [0]);	1212	fd_intern (evpipe [0]);
967	fd_intern (evpipe [1]);	1213	fd_intern (evpipe [1]);
968	ev_io_set (&pipeev, evpipe [0], EV_READ);	1214	ev_io_set (&pipe_w, evpipe [0], EV_READ);
969	}	1215	}
970		1216
971	ev_io_start (EV_A_ &pipeev);	1217	ev_io_start (EV_A_ &pipe_w);
972	ev_unref (EV_A); /* watcher should not keep loop alive */	1218	ev_unref (EV_A); /* watcher should not keep loop alive */
973	}	1219	}
974	}	1220	}
975		1221
976	void inline_size	1222	inline_size void
977	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1223	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
978	{	1224	{
979	if (!*flag)	1225	if (!*flag)
980	{	1226	{
981	int old_errno = errno; /* save errno because write might clobber it */	1227	int old_errno = errno; /* save errno because write might clobber it */
…		…
994		1240
995	errno = old_errno;	1241	errno = old_errno;
996	}	1242	}
997	}	1243	}
998		1244
		1245	/* called whenever the libev signal pipe */
		1246	/* got some events (signal, async) */
999	static void	1247	static void
1000	pipecb (EV_P_ ev_io *iow, int revents)	1248	pipecb (EV_P_ ev_io *iow, int revents)
1001	{	1249	{
		1250	int i;
		1251
1002	#if EV_USE_EVENTFD	1252	#if EV_USE_EVENTFD
1003	if (evfd >= 0)	1253	if (evfd >= 0)
1004	{	1254	{
1005	uint64_t counter;	1255	uint64_t counter;
1006	read (evfd, &counter, sizeof (uint64_t));	1256	read (evfd, &counter, sizeof (uint64_t));
…		…
1010	{	1260	{
1011	char dummy;	1261	char dummy;
1012	read (evpipe [0], &dummy, 1);	1262	read (evpipe [0], &dummy, 1);
1013	}	1263	}
1014		1264
1015	if (gotsig && ev_is_default_loop (EV_A))	1265	if (sig_pending)
1016	{	1266	{
1017	int signum;	1267	sig_pending = 0;
1018	gotsig = 0;
1019		1268
1020	for (signum = signalmax; signum--; )	1269	for (i = EV_NSIG - 1; i--; )
1021	if (signals [signum].gotsig)	1270	if (expect_false (signals [i].pending))
1022	ev_feed_signal_event (EV_A_ signum + 1);	1271	ev_feed_signal_event (EV_A_ i + 1);
1023	}	1272	}
1024		1273
1025	#if EV_ASYNC_ENABLE	1274	#if EV_ASYNC_ENABLE
1026	if (gotasync)	1275	if (async_pending)
1027	{	1276	{
1028	int i;	1277	async_pending = 0;
1029	gotasync = 0;
1030		1278
1031	for (i = asynccnt; i--; )	1279	for (i = asynccnt; i--; )
1032	if (asyncs [i]->sent)	1280	if (asyncs [i]->sent)
1033	{	1281	{
1034	asyncs [i]->sent = 0;	1282	asyncs [i]->sent = 0;
…		…
1042		1290
1043	static void	1291	static void
1044	ev_sighandler (int signum)	1292	ev_sighandler (int signum)
1045	{	1293	{
1046	#if EV_MULTIPLICITY	1294	#if EV_MULTIPLICITY
1047	struct ev_loop *loop = &default_loop_struct;	1295	EV_P = signals [signum - 1].loop;
1048	#endif	1296	#endif
1049		1297
1050	#if _WIN32	1298	#if _WIN32
1051	signal (signum, ev_sighandler);	1299	signal (signum, ev_sighandler);
1052	#endif	1300	#endif
1053		1301
1054	signals [signum - 1].gotsig = 1;	1302	signals [signum - 1].pending = 1;
1055	evpipe_write (EV_A_ &gotsig);	1303	evpipe_write (EV_A_ &sig_pending);
1056	}	1304	}
1057		1305
1058	void noinline	1306	void noinline
1059	ev_feed_signal_event (EV_P_ int signum)	1307	ev_feed_signal_event (EV_P_ int signum)
1060	{	1308	{
1061	WL w;	1309	WL w;
1062		1310
		1311	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1312	return;
		1313
		1314	--signum;
		1315
1063	#if EV_MULTIPLICITY	1316	#if EV_MULTIPLICITY
1064	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 */
1065	#endif	1318	/* or, likely more useful, feeding a signal nobody is waiting for */
1066		1319
1067	--signum;	1320	if (expect_false (signals [signum].loop != EV_A))
1068
1069	if (signum < 0 || signum >= signalmax)
1070	return;	1321	return;
		1322	#endif
1071		1323
1072	signals [signum].gotsig = 0;	1324	signals [signum].pending = 0;
1073		1325
1074	for (w = signals [signum].head; w; w = w->next)	1326	for (w = signals [signum].head; w; w = w->next)
1075	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1327	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1076	}	1328	}
1077		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
1078	/*****************************************************************************/	1350	/*****************************************************************************/
1079		1351
1080	static WL childs [EV_PID_HASHSIZE];	1352	static WL childs [EV_PID_HASHSIZE];
1081		1353
1082	#ifndef _WIN32	1354	#ifndef _WIN32
…		…
1085		1357
1086	#ifndef WIFCONTINUED	1358	#ifndef WIFCONTINUED
1087	# define WIFCONTINUED(status) 0	1359	# define WIFCONTINUED(status) 0
1088	#endif	1360	#endif
1089		1361
1090	void inline_speed	1362	/* handle a single child status event */
		1363	inline_speed void
1091	child_reap (EV_P_ int chain, int pid, int status)	1364	child_reap (EV_P_ int chain, int pid, int status)
1092	{	1365	{
1093	ev_child *w;	1366	ev_child *w;
1094	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1367	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1095		1368
…		…
1108		1381
1109	#ifndef WCONTINUED	1382	#ifndef WCONTINUED
1110	# define WCONTINUED 0	1383	# define WCONTINUED 0
1111	#endif	1384	#endif
1112		1385
		1386	/* called on sigchld etc., calls waitpid */
1113	static void	1387	static void
1114	childcb (EV_P_ ev_signal *sw, int revents)	1388	childcb (EV_P_ ev_signal *sw, int revents)
1115	{	1389	{
1116	int pid, status;	1390	int pid, status;
1117		1391
…		…
1198	/* kqueue is borked on everything but netbsd apparently */	1472	/* kqueue is borked on everything but netbsd apparently */
1199	/* 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 */
1200	flags &= ~EVBACKEND_KQUEUE;	1474	flags &= ~EVBACKEND_KQUEUE;
1201	#endif	1475	#endif
1202	#ifdef __APPLE__	1476	#ifdef __APPLE__
1203	// flags &= ~EVBACKEND_KQUEUE; for documentation	1477	/* only select works correctly on that "unix-certified" platform */
1204	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 */
1205	#endif	1480	#endif
1206		1481
1207	return flags;	1482	return flags;
1208	}	1483	}
1209		1484
…		…
1223	ev_backend (EV_P)	1498	ev_backend (EV_P)
1224	{	1499	{
1225	return backend;	1500	return backend;
1226	}	1501	}
1227		1502
		1503	#if EV_MINIMAL < 2
1228	unsigned int	1504	unsigned int
1229	ev_loop_count (EV_P)	1505	ev_loop_count (EV_P)
1230	{	1506	{
1231	return loop_count;	1507	return loop_count;
1232	}	1508	}
1233		1509
		1510	unsigned int
		1511	ev_loop_depth (EV_P)
		1512	{
		1513	return loop_depth;
		1514	}
		1515
1234	void	1516	void
1235	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1517	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1236	{	1518	{
1237	io_blocktime = interval;	1519	io_blocktime = interval;
1238	}	1520	}
…		…
1241	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1523	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1242	{	1524	{
1243	timeout_blocktime = interval;	1525	timeout_blocktime = interval;
1244	}	1526	}
1245		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 */
1246	static void noinline	1553	static void noinline
1247	loop_init (EV_P_ unsigned int flags)	1554	loop_init (EV_P_ unsigned int flags)
1248	{	1555	{
1249	if (!backend)	1556	if (!backend)
1250	{	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
1251	#if EV_USE_MONOTONIC	1568	#if EV_USE_MONOTONIC
		1569	if (!have_monotonic)
1252	{	1570	{
1253	struct timespec ts;	1571	struct timespec ts;
		1572
1254	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1573	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1255	have_monotonic = 1;	1574	have_monotonic = 1;
1256	}	1575	}
1257	#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"));
1258		1588
1259	ev_rt_now = ev_time ();	1589	ev_rt_now = ev_time ();
1260	mn_now = get_clock ();	1590	mn_now = get_clock ();
1261	now_floor = mn_now;	1591	now_floor = mn_now;
1262	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
1263		1596
1264	io_blocktime = 0.;	1597	io_blocktime = 0.;
1265	timeout_blocktime = 0.;	1598	timeout_blocktime = 0.;
1266	backend = 0;	1599	backend = 0;
1267	backend_fd = -1;	1600	backend_fd = -1;
1268	gotasync = 0;	1601	sig_pending = 0;
		1602	#if EV_ASYNC_ENABLE
		1603	async_pending = 0;
		1604	#endif
1269	#if EV_USE_INOTIFY	1605	#if EV_USE_INOTIFY
1270	fs_fd = -2;	1606	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1271	#endif	1607	#endif
1272		1608	#if EV_USE_SIGNALFD
1273	/* pid check not overridable via env */	1609	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1274	#ifndef _WIN32
1275	if (flags & EVFLAG_FORKCHECK)
1276	curpid = getpid ();
1277	#endif	1610	#endif
1278
1279	if (!(flags & EVFLAG_NOENV)
1280	&& !enable_secure ()
1281	&& getenv ("LIBEV_FLAGS"))
1282	flags = atoi (getenv ("LIBEV_FLAGS"));
1283		1611
1284	if (!(flags & 0x0000ffffU))	1612	if (!(flags & 0x0000ffffU))
1285	flags |= ev_recommended_backends ();	1613	flags |= ev_recommended_backends ();
1286		1614
1287	#if EV_USE_PORT	1615	#if EV_USE_PORT
…		…
1298	#endif	1626	#endif
1299	#if EV_USE_SELECT	1627	#if EV_USE_SELECT
1300	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1628	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1301	#endif	1629	#endif
1302		1630
		1631	ev_prepare_init (&pending_w, pendingcb);
		1632
1303	ev_init (&pipeev, pipecb);	1633	ev_init (&pipe_w, pipecb);
1304	ev_set_priority (&pipeev, EV_MAXPRI);	1634	ev_set_priority (&pipe_w, EV_MAXPRI);
1305	}	1635	}
1306	}	1636	}
1307		1637
		1638	/* free up a loop structure */
1308	static void noinline	1639	static void noinline
1309	loop_destroy (EV_P)	1640	loop_destroy (EV_P)
1310	{	1641	{
1311	int i;	1642	int i;
1312		1643
1313	if (ev_is_active (&pipeev))	1644	if (ev_is_active (&pipe_w))
1314	{	1645	{
1315	ev_ref (EV_A); /* signal watcher */	1646	/*ev_ref (EV_A);*/
1316	ev_io_stop (EV_A_ &pipeev);	1647	/*ev_io_stop (EV_A_ &pipe_w);*/
1317		1648
1318	#if EV_USE_EVENTFD	1649	#if EV_USE_EVENTFD
1319	if (evfd >= 0)	1650	if (evfd >= 0)
1320	close (evfd);	1651	close (evfd);
1321	#endif	1652	#endif
1322		1653
1323	if (evpipe [0] >= 0)	1654	if (evpipe [0] >= 0)
1324	{	1655	{
1325	close (evpipe [0]);	1656	EV_WIN32_CLOSE_FD (evpipe [0]);
1326	close (evpipe [1]);	1657	EV_WIN32_CLOSE_FD (evpipe [1]);
1327	}	1658	}
1328	}	1659	}
		1660
		1661	#if EV_USE_SIGNALFD
		1662	if (ev_is_active (&sigfd_w))
		1663	close (sigfd);
		1664	#endif
1329		1665
1330	#if EV_USE_INOTIFY	1666	#if EV_USE_INOTIFY
1331	if (fs_fd >= 0)	1667	if (fs_fd >= 0)
1332	close (fs_fd);	1668	close (fs_fd);
1333	#endif	1669	#endif
…		…
1357	#if EV_IDLE_ENABLE	1693	#if EV_IDLE_ENABLE
1358	array_free (idle, [i]);	1694	array_free (idle, [i]);
1359	#endif	1695	#endif
1360	}	1696	}
1361		1697
1362	ev_free (anfds); anfdmax = 0;	1698	ev_free (anfds); anfds = 0; anfdmax = 0;
1363		1699
1364	/* have to use the microsoft-never-gets-it-right macro */	1700	/* have to use the microsoft-never-gets-it-right macro */
		1701	array_free (rfeed, EMPTY);
1365	array_free (fdchange, EMPTY);	1702	array_free (fdchange, EMPTY);
1366	array_free (timer, EMPTY);	1703	array_free (timer, EMPTY);
1367	#if EV_PERIODIC_ENABLE	1704	#if EV_PERIODIC_ENABLE
1368	array_free (periodic, EMPTY);	1705	array_free (periodic, EMPTY);
1369	#endif	1706	#endif
…		…
1378		1715
1379	backend = 0;	1716	backend = 0;
1380	}	1717	}
1381		1718
1382	#if EV_USE_INOTIFY	1719	#if EV_USE_INOTIFY
1383	void inline_size infy_fork (EV_P);	1720	inline_size void infy_fork (EV_P);
1384	#endif	1721	#endif
1385		1722
1386	void inline_size	1723	inline_size void
1387	loop_fork (EV_P)	1724	loop_fork (EV_P)
1388	{	1725	{
1389	#if EV_USE_PORT	1726	#if EV_USE_PORT
1390	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1727	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1391	#endif	1728	#endif
…		…
1397	#endif	1734	#endif
1398	#if EV_USE_INOTIFY	1735	#if EV_USE_INOTIFY
1399	infy_fork (EV_A);	1736	infy_fork (EV_A);
1400	#endif	1737	#endif
1401		1738
1402	if (ev_is_active (&pipeev))	1739	if (ev_is_active (&pipe_w))
1403	{	1740	{
1404	/* this "locks" the handlers against writing to the pipe */	1741	/* this "locks" the handlers against writing to the pipe */
1405	/* while we modify the fd vars */	1742	/* while we modify the fd vars */
1406	gotsig = 1;	1743	sig_pending = 1;
1407	#if EV_ASYNC_ENABLE	1744	#if EV_ASYNC_ENABLE
1408	gotasync = 1;	1745	async_pending = 1;
1409	#endif	1746	#endif
1410		1747
1411	ev_ref (EV_A);	1748	ev_ref (EV_A);
1412	ev_io_stop (EV_A_ &pipeev);	1749	ev_io_stop (EV_A_ &pipe_w);
1413		1750
1414	#if EV_USE_EVENTFD	1751	#if EV_USE_EVENTFD
1415	if (evfd >= 0)	1752	if (evfd >= 0)
1416	close (evfd);	1753	close (evfd);
1417	#endif	1754	#endif
1418		1755
1419	if (evpipe [0] >= 0)	1756	if (evpipe [0] >= 0)
1420	{	1757	{
1421	close (evpipe [0]);	1758	EV_WIN32_CLOSE_FD (evpipe [0]);
1422	close (evpipe [1]);	1759	EV_WIN32_CLOSE_FD (evpipe [1]);
1423	}	1760	}
1424		1761
1425	evpipe_init (EV_A);	1762	evpipe_init (EV_A);
1426	/* now iterate over everything, in case we missed something */	1763	/* now iterate over everything, in case we missed something */
1427	pipecb (EV_A_ &pipeev, EV_READ);	1764	pipecb (EV_A_ &pipe_w, EV_READ);
1428	}	1765	}
1429		1766
1430	postfork = 0;	1767	postfork = 0;
1431	}	1768	}
1432		1769
1433	#if EV_MULTIPLICITY	1770	#if EV_MULTIPLICITY
		1771
1434	struct ev_loop *	1772	struct ev_loop *
1435	ev_loop_new (unsigned int flags)	1773	ev_loop_new (unsigned int flags)
1436	{	1774	{
1437	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1775	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1438		1776
1439	memset (loop, 0, sizeof (struct ev_loop));	1777	memset (EV_A, 0, sizeof (struct ev_loop));
1440
1441	loop_init (EV_A_ flags);	1778	loop_init (EV_A_ flags);
1442		1779
1443	if (ev_backend (EV_A))	1780	if (ev_backend (EV_A))
1444	return loop;	1781	return EV_A;
1445		1782
1446	return 0;	1783	return 0;
1447	}	1784	}
1448		1785
1449	void	1786	void
…		…
1455		1792
1456	void	1793	void
1457	ev_loop_fork (EV_P)	1794	ev_loop_fork (EV_P)
1458	{	1795	{
1459	postfork = 1; /* must be in line with ev_default_fork */	1796	postfork = 1; /* must be in line with ev_default_fork */
		1797	}
		1798	#endif /* multiplicity */
		1799
		1800	#if EV_VERIFY
		1801	static void noinline
		1802	verify_watcher (EV_P_ W w)
		1803	{
		1804	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1805
		1806	if (w->pending)
		1807	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1808	}
		1809
		1810	static void noinline
		1811	verify_heap (EV_P_ ANHE *heap, int N)
		1812	{
		1813	int i;
		1814
		1815	for (i = HEAP0; i < N + HEAP0; ++i)
		1816	{
		1817	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1818	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1819	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1820
		1821	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1822	}
		1823	}
		1824
		1825	static void noinline
		1826	array_verify (EV_P_ W *ws, int cnt)
		1827	{
		1828	while (cnt--)
		1829	{
		1830	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1831	verify_watcher (EV_A_ ws [cnt]);
		1832	}
		1833	}
		1834	#endif
		1835
		1836	#if EV_MINIMAL < 2
		1837	void
		1838	ev_loop_verify (EV_P)
		1839	{
		1840	#if EV_VERIFY
		1841	int i;
		1842	WL w;
		1843
		1844	assert (activecnt >= -1);
		1845
		1846	assert (fdchangemax >= fdchangecnt);
		1847	for (i = 0; i < fdchangecnt; ++i)
		1848	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1849
		1850	assert (anfdmax >= 0);
		1851	for (i = 0; i < anfdmax; ++i)
		1852	for (w = anfds [i].head; w; w = w->next)
		1853	{
		1854	verify_watcher (EV_A_ (W)w);
		1855	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1856	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1857	}
		1858
		1859	assert (timermax >= timercnt);
		1860	verify_heap (EV_A_ timers, timercnt);
		1861
		1862	#if EV_PERIODIC_ENABLE
		1863	assert (periodicmax >= periodiccnt);
		1864	verify_heap (EV_A_ periodics, periodiccnt);
		1865	#endif
		1866
		1867	for (i = NUMPRI; i--; )
		1868	{
		1869	assert (pendingmax [i] >= pendingcnt [i]);
		1870	#if EV_IDLE_ENABLE
		1871	assert (idleall >= 0);
		1872	assert (idlemax [i] >= idlecnt [i]);
		1873	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1874	#endif
		1875	}
		1876
		1877	#if EV_FORK_ENABLE
		1878	assert (forkmax >= forkcnt);
		1879	array_verify (EV_A_ (W *)forks, forkcnt);
		1880	#endif
		1881
		1882	#if EV_ASYNC_ENABLE
		1883	assert (asyncmax >= asynccnt);
		1884	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1885	#endif
		1886
		1887	assert (preparemax >= preparecnt);
		1888	array_verify (EV_A_ (W *)prepares, preparecnt);
		1889
		1890	assert (checkmax >= checkcnt);
		1891	array_verify (EV_A_ (W *)checks, checkcnt);
		1892
		1893	# if 0
		1894	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1895	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		1896	# endif
		1897	#endif
1460	}	1898	}
1461	#endif	1899	#endif
1462		1900
1463	#if EV_MULTIPLICITY	1901	#if EV_MULTIPLICITY
1464	struct ev_loop *	1902	struct ev_loop *
…		…
1469	#endif	1907	#endif
1470	{	1908	{
1471	if (!ev_default_loop_ptr)	1909	if (!ev_default_loop_ptr)
1472	{	1910	{
1473	#if EV_MULTIPLICITY	1911	#if EV_MULTIPLICITY
1474	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1912	EV_P = ev_default_loop_ptr = &default_loop_struct;
1475	#else	1913	#else
1476	ev_default_loop_ptr = 1;	1914	ev_default_loop_ptr = 1;
1477	#endif	1915	#endif
1478		1916
1479	loop_init (EV_A_ flags);	1917	loop_init (EV_A_ flags);
…		…
1496		1934
1497	void	1935	void
1498	ev_default_destroy (void)	1936	ev_default_destroy (void)
1499	{	1937	{
1500	#if EV_MULTIPLICITY	1938	#if EV_MULTIPLICITY
1501	struct ev_loop *loop = ev_default_loop_ptr;	1939	EV_P = ev_default_loop_ptr;
1502	#endif	1940	#endif
		1941
		1942	ev_default_loop_ptr = 0;
1503		1943
1504	#ifndef _WIN32	1944	#ifndef _WIN32
1505	ev_ref (EV_A); /* child watcher */	1945	ev_ref (EV_A); /* child watcher */
1506	ev_signal_stop (EV_A_ &childev);	1946	ev_signal_stop (EV_A_ &childev);
1507	#endif	1947	#endif
…		…
1511		1951
1512	void	1952	void
1513	ev_default_fork (void)	1953	ev_default_fork (void)
1514	{	1954	{
1515	#if EV_MULTIPLICITY	1955	#if EV_MULTIPLICITY
1516	struct ev_loop *loop = ev_default_loop_ptr;	1956	EV_P = ev_default_loop_ptr;
1517	#endif	1957	#endif
1518		1958
1519	if (backend)
1520	postfork = 1; /* must be in line with ev_loop_fork */	1959	postfork = 1; /* must be in line with ev_loop_fork */
1521	}	1960	}
1522		1961
1523	/*****************************************************************************/	1962	/*****************************************************************************/
1524		1963
1525	void	1964	void
1526	ev_invoke (EV_P_ void *w, int revents)	1965	ev_invoke (EV_P_ void *w, int revents)
1527	{	1966	{
1528	EV_CB_INVOKE ((W)w, revents);	1967	EV_CB_INVOKE ((W)w, revents);
1529	}	1968	}
1530		1969
1531	void inline_speed	1970	unsigned int
1532	call_pending (EV_P)	1971	ev_pending_count (EV_P)
		1972	{
		1973	int pri;
		1974	unsigned int count = 0;
		1975
		1976	for (pri = NUMPRI; pri--; )
		1977	count += pendingcnt [pri];
		1978
		1979	return count;
		1980	}
		1981
		1982	void noinline
		1983	ev_invoke_pending (EV_P)
1533	{	1984	{
1534	int pri;	1985	int pri;
1535		1986
1536	for (pri = NUMPRI; pri--; )	1987	for (pri = NUMPRI; pri--; )
1537	while (pendingcnt [pri])	1988	while (pendingcnt [pri])
1538	{	1989	{
1539	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1990	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1540		1991
1541	if (expect_true (p->w))
1542	{
1543	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1992	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1993	/* ^ this is no longer true, as pending_w could be here */
1544		1994
1545	p->w->pending = 0;	1995	p->w->pending = 0;
1546	EV_CB_INVOKE (p->w, p->events);	1996	EV_CB_INVOKE (p->w, p->events);
1547	}	1997	EV_FREQUENT_CHECK;
1548	}	1998	}
1549	}	1999	}
1550		2000
1551	#if EV_IDLE_ENABLE	2001	#if EV_IDLE_ENABLE
1552	void inline_size	2002	/* make idle watchers pending. this handles the "call-idle */
		2003	/* only when higher priorities are idle" logic */
		2004	inline_size void
1553	idle_reify (EV_P)	2005	idle_reify (EV_P)
1554	{	2006	{
1555	if (expect_false (idleall))	2007	if (expect_false (idleall))
1556	{	2008	{
1557	int pri;	2009	int pri;
…		…
1569	}	2021	}
1570	}	2022	}
1571	}	2023	}
1572	#endif	2024	#endif
1573		2025
1574	void inline_size	2026	/* make timers pending */
		2027	inline_size void
1575	timers_reify (EV_P)	2028	timers_reify (EV_P)
1576	{	2029	{
		2030	EV_FREQUENT_CHECK;
		2031
1577	while (timercnt && ev_at (timers [HEAP0]) <= mn_now)	2032	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1578	{	2033	{
1579	ev_timer *w = (ev_timer *)timers [HEAP0];	2034	do
1580
1581	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1582
1583	/* first reschedule or stop timer */
1584	if (w->repeat)
1585	{	2035	{
		2036	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2037
		2038	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2039
		2040	/* first reschedule or stop timer */
		2041	if (w->repeat)
		2042	{
		2043	ev_at (w) += w->repeat;
		2044	if (ev_at (w) < mn_now)
		2045	ev_at (w) = mn_now;
		2046
1586	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	2047	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1587		2048
1588	ev_at (w) += w->repeat;	2049	ANHE_at_cache (timers [HEAP0]);
1589	if (ev_at (w) < mn_now)
1590	ev_at (w) = mn_now;
1591
1592	downheap (timers, timercnt, HEAP0);	2050	downheap (timers, timercnt, HEAP0);
		2051	}
		2052	else
		2053	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2054
		2055	EV_FREQUENT_CHECK;
		2056	feed_reverse (EV_A_ (W)w);
1593	}	2057	}
1594	else	2058	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1595	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1596		2059
1597	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	2060	feed_reverse_done (EV_A_ EV_TIMEOUT);
1598	}	2061	}
1599	}	2062	}
1600		2063
1601	#if EV_PERIODIC_ENABLE	2064	#if EV_PERIODIC_ENABLE
1602	void inline_size	2065	/* make periodics pending */
		2066	inline_size void
1603	periodics_reify (EV_P)	2067	periodics_reify (EV_P)
1604	{	2068	{
		2069	EV_FREQUENT_CHECK;
		2070
1605	while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now)	2071	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1606	{	2072	{
1607	ev_periodic *w = (ev_periodic *)periodics [HEAP0];	2073	int feed_count = 0;
1608		2074
1609	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	2075	do
1610
1611	/* first reschedule or stop timer */
1612	if (w->reschedule_cb)
1613	{	2076	{
		2077	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2078
		2079	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2080
		2081	/* first reschedule or stop timer */
		2082	if (w->reschedule_cb)
		2083	{
1614	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);	2084	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2085
1615	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));	2086	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		2087
		2088	ANHE_at_cache (periodics [HEAP0]);
1616	downheap (periodics, periodiccnt, 1);	2089	downheap (periodics, periodiccnt, HEAP0);
		2090	}
		2091	else if (w->interval)
		2092	{
		2093	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2094	/* if next trigger time is not sufficiently in the future, put it there */
		2095	/* this might happen because of floating point inexactness */
		2096	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2097	{
		2098	ev_at (w) += w->interval;
		2099
		2100	/* if interval is unreasonably low we might still have a time in the past */
		2101	/* so correct this. this will make the periodic very inexact, but the user */
		2102	/* has effectively asked to get triggered more often than possible */
		2103	if (ev_at (w) < ev_rt_now)
		2104	ev_at (w) = ev_rt_now;
		2105	}
		2106
		2107	ANHE_at_cache (periodics [HEAP0]);
		2108	downheap (periodics, periodiccnt, HEAP0);
		2109	}
		2110	else
		2111	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2112
		2113	EV_FREQUENT_CHECK;
		2114	feed_reverse (EV_A_ (W)w);
1617	}	2115	}
1618	else if (w->interval)	2116	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1619	{
1620	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1621	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1622	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1623	downheap (periodics, periodiccnt, HEAP0);
1624	}
1625	else
1626	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1627		2117
1628	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	2118	feed_reverse_done (EV_A_ EV_PERIODIC);
1629	}	2119	}
1630	}	2120	}
1631		2121
		2122	/* simply recalculate all periodics */
		2123	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1632	static void noinline	2124	static void noinline
1633	periodics_reschedule (EV_P)	2125	periodics_reschedule (EV_P)
1634	{	2126	{
1635	int i;	2127	int i;
1636		2128
1637	/* adjust periodics after time jump */	2129	/* adjust periodics after time jump */
1638	for (i = 1; i <= periodiccnt; ++i)	2130	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1639	{	2131	{
1640	ev_periodic *w = (ev_periodic *)periodics [i];	2132	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1641		2133
1642	if (w->reschedule_cb)	2134	if (w->reschedule_cb)
1643	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2135	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1644	else if (w->interval)	2136	else if (w->interval)
1645	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2137	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2138
		2139	ANHE_at_cache (periodics [i]);
		2140	}
		2141
		2142	reheap (periodics, periodiccnt);
		2143	}
		2144	#endif
		2145
		2146	/* adjust all timers by a given offset */
		2147	static void noinline
		2148	timers_reschedule (EV_P_ ev_tstamp adjust)
		2149	{
		2150	int i;
		2151
		2152	for (i = 0; i < timercnt; ++i)
1646	}	2153	{
1647		2154	ANHE *he = timers + i + HEAP0;
1648	/* now rebuild the heap */	2155	ANHE_w (*he)->at += adjust;
1649	for (i = periodiccnt >> 1; --i; )	2156	ANHE_at_cache (*he);
1650	downheap (periodics, periodiccnt, i + HEAP0);	2157	}
1651	}	2158	}
1652	#endif
1653		2159
1654	void inline_speed	2160	/* fetch new monotonic and realtime times from the kernel */
		2161	/* also detetc if there was a timejump, and act accordingly */
		2162	inline_speed void
1655	time_update (EV_P_ ev_tstamp max_block)	2163	time_update (EV_P_ ev_tstamp max_block)
1656	{	2164	{
1657	int i;
1658
1659	#if EV_USE_MONOTONIC	2165	#if EV_USE_MONOTONIC
1660	if (expect_true (have_monotonic))	2166	if (expect_true (have_monotonic))
1661	{	2167	{
		2168	int i;
1662	ev_tstamp odiff = rtmn_diff;	2169	ev_tstamp odiff = rtmn_diff;
1663		2170
1664	mn_now = get_clock ();	2171	mn_now = get_clock ();
1665		2172
1666	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2173	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1692	ev_rt_now = ev_time ();	2199	ev_rt_now = ev_time ();
1693	mn_now = get_clock ();	2200	mn_now = get_clock ();
1694	now_floor = mn_now;	2201	now_floor = mn_now;
1695	}	2202	}
1696		2203
		2204	/* no timer adjustment, as the monotonic clock doesn't jump */
		2205	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1697	# if EV_PERIODIC_ENABLE	2206	# if EV_PERIODIC_ENABLE
1698	periodics_reschedule (EV_A);	2207	periodics_reschedule (EV_A);
1699	# endif	2208	# endif
1700	/* no timer adjustment, as the monotonic clock doesn't jump */
1701	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1702	}	2209	}
1703	else	2210	else
1704	#endif	2211	#endif
1705	{	2212	{
1706	ev_rt_now = ev_time ();	2213	ev_rt_now = ev_time ();
1707		2214
1708	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2215	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1709	{	2216	{
		2217	/* adjust timers. this is easy, as the offset is the same for all of them */
		2218	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1710	#if EV_PERIODIC_ENABLE	2219	#if EV_PERIODIC_ENABLE
1711	periodics_reschedule (EV_A);	2220	periodics_reschedule (EV_A);
1712	#endif	2221	#endif
1713	/* adjust timers. this is easy, as the offset is the same for all of them */
1714	for (i = 1; i <= timercnt; ++i)
1715	ev_at (timers [i]) += ev_rt_now - mn_now;
1716	}	2222	}
1717		2223
1718	mn_now = ev_rt_now;	2224	mn_now = ev_rt_now;
1719	}	2225	}
1720	}	2226	}
1721		2227
1722	void	2228	void
1723	ev_ref (EV_P)
1724	{
1725	++activecnt;
1726	}
1727
1728	void
1729	ev_unref (EV_P)
1730	{
1731	--activecnt;
1732	}
1733
1734	static int loop_done;
1735
1736	void
1737	ev_loop (EV_P_ int flags)	2229	ev_loop (EV_P_ int flags)
1738	{	2230	{
		2231	#if EV_MINIMAL < 2
		2232	++loop_depth;
		2233	#endif
		2234
		2235	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2236
1739	loop_done = EVUNLOOP_CANCEL;	2237	loop_done = EVUNLOOP_CANCEL;
1740		2238
1741	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2239	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1742		2240
1743	do	2241	do
1744	{	2242	{
		2243	#if EV_VERIFY >= 2
		2244	ev_loop_verify (EV_A);
		2245	#endif
		2246
1745	#ifndef _WIN32	2247	#ifndef _WIN32
1746	if (expect_false (curpid)) /* penalise the forking check even more */	2248	if (expect_false (curpid)) /* penalise the forking check even more */
1747	if (expect_false (getpid () != curpid))	2249	if (expect_false (getpid () != curpid))
1748	{	2250	{
1749	curpid = getpid ();	2251	curpid = getpid ();
…		…
1755	/* we might have forked, so queue fork handlers */	2257	/* we might have forked, so queue fork handlers */
1756	if (expect_false (postfork))	2258	if (expect_false (postfork))
1757	if (forkcnt)	2259	if (forkcnt)
1758	{	2260	{
1759	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2261	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1760	call_pending (EV_A);	2262	EV_INVOKE_PENDING;
1761	}	2263	}
1762	#endif	2264	#endif
1763		2265
1764	/* queue prepare watchers (and execute them) */	2266	/* queue prepare watchers (and execute them) */
1765	if (expect_false (preparecnt))	2267	if (expect_false (preparecnt))
1766	{	2268	{
1767	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2269	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1768	call_pending (EV_A);	2270	EV_INVOKE_PENDING;
1769	}	2271	}
1770		2272
1771	if (expect_false (!activecnt))	2273	if (expect_false (loop_done))
1772	break;	2274	break;
1773		2275
1774	/* we might have forked, so reify kernel state if necessary */	2276	/* we might have forked, so reify kernel state if necessary */
1775	if (expect_false (postfork))	2277	if (expect_false (postfork))
1776	loop_fork (EV_A);	2278	loop_fork (EV_A);
…		…
1783	ev_tstamp waittime = 0.;	2285	ev_tstamp waittime = 0.;
1784	ev_tstamp sleeptime = 0.;	2286	ev_tstamp sleeptime = 0.;
1785		2287
1786	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2288	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1787	{	2289	{
		2290	/* remember old timestamp for io_blocktime calculation */
		2291	ev_tstamp prev_mn_now = mn_now;
		2292
1788	/* update time to cancel out callback processing overhead */	2293	/* update time to cancel out callback processing overhead */
1789	time_update (EV_A_ 1e100);	2294	time_update (EV_A_ 1e100);
1790		2295
1791	waittime = MAX_BLOCKTIME;	2296	waittime = MAX_BLOCKTIME;
1792		2297
1793	if (timercnt)	2298	if (timercnt)
1794	{	2299	{
1795	ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge;	2300	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1796	if (waittime > to) waittime = to;	2301	if (waittime > to) waittime = to;
1797	}	2302	}
1798		2303
1799	#if EV_PERIODIC_ENABLE	2304	#if EV_PERIODIC_ENABLE
1800	if (periodiccnt)	2305	if (periodiccnt)
1801	{	2306	{
1802	ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2307	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1803	if (waittime > to) waittime = to;	2308	if (waittime > to) waittime = to;
1804	}	2309	}
1805	#endif	2310	#endif
1806		2311
		2312	/* don't let timeouts decrease the waittime below timeout_blocktime */
1807	if (expect_false (waittime < timeout_blocktime))	2313	if (expect_false (waittime < timeout_blocktime))
1808	waittime = timeout_blocktime;	2314	waittime = timeout_blocktime;
1809		2315
1810	sleeptime = waittime - backend_fudge;	2316	/* extra check because io_blocktime is commonly 0 */
1811
1812	if (expect_true (sleeptime > io_blocktime))	2317	if (expect_false (io_blocktime))
1813	sleeptime = io_blocktime;
1814
1815	if (sleeptime)
1816	{	2318	{
		2319	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2320
		2321	if (sleeptime > waittime - backend_fudge)
		2322	sleeptime = waittime - backend_fudge;
		2323
		2324	if (expect_true (sleeptime > 0.))
		2325	{
1817	ev_sleep (sleeptime);	2326	ev_sleep (sleeptime);
1818	waittime -= sleeptime;	2327	waittime -= sleeptime;
		2328	}
1819	}	2329	}
1820	}	2330	}
1821		2331
		2332	#if EV_MINIMAL < 2
1822	++loop_count;	2333	++loop_count;
		2334	#endif
		2335	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1823	backend_poll (EV_A_ waittime);	2336	backend_poll (EV_A_ waittime);
		2337	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1824		2338
1825	/* update ev_rt_now, do magic */	2339	/* update ev_rt_now, do magic */
1826	time_update (EV_A_ waittime + sleeptime);	2340	time_update (EV_A_ waittime + sleeptime);
1827	}	2341	}
1828		2342
…		…
1839		2353
1840	/* queue check watchers, to be executed first */	2354	/* queue check watchers, to be executed first */
1841	if (expect_false (checkcnt))	2355	if (expect_false (checkcnt))
1842	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2356	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1843		2357
1844	call_pending (EV_A);	2358	EV_INVOKE_PENDING;
1845	}	2359	}
1846	while (expect_true (	2360	while (expect_true (
1847	activecnt	2361	activecnt
1848	&& !loop_done	2362	&& !loop_done
1849	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2363	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1850	));	2364	));
1851		2365
1852	if (loop_done == EVUNLOOP_ONE)	2366	if (loop_done == EVUNLOOP_ONE)
1853	loop_done = EVUNLOOP_CANCEL;	2367	loop_done = EVUNLOOP_CANCEL;
		2368
		2369	#if EV_MINIMAL < 2
		2370	--loop_depth;
		2371	#endif
1854	}	2372	}
1855		2373
1856	void	2374	void
1857	ev_unloop (EV_P_ int how)	2375	ev_unloop (EV_P_ int how)
1858	{	2376	{
1859	loop_done = how;	2377	loop_done = how;
1860	}	2378	}
1861		2379
		2380	void
		2381	ev_ref (EV_P)
		2382	{
		2383	++activecnt;
		2384	}
		2385
		2386	void
		2387	ev_unref (EV_P)
		2388	{
		2389	--activecnt;
		2390	}
		2391
		2392	void
		2393	ev_now_update (EV_P)
		2394	{
		2395	time_update (EV_A_ 1e100);
		2396	}
		2397
		2398	void
		2399	ev_suspend (EV_P)
		2400	{
		2401	ev_now_update (EV_A);
		2402	}
		2403
		2404	void
		2405	ev_resume (EV_P)
		2406	{
		2407	ev_tstamp mn_prev = mn_now;
		2408
		2409	ev_now_update (EV_A);
		2410	timers_reschedule (EV_A_ mn_now - mn_prev);
		2411	#if EV_PERIODIC_ENABLE
		2412	/* TODO: really do this? */
		2413	periodics_reschedule (EV_A);
		2414	#endif
		2415	}
		2416
1862	/*****************************************************************************/	2417	/*****************************************************************************/
		2418	/* singly-linked list management, used when the expected list length is short */
1863		2419
1864	void inline_size	2420	inline_size void
1865	wlist_add (WL *head, WL elem)	2421	wlist_add (WL *head, WL elem)
1866	{	2422	{
1867	elem->next = *head;	2423	elem->next = *head;
1868	*head = elem;	2424	*head = elem;
1869	}	2425	}
1870		2426
1871	void inline_size	2427	inline_size void
1872	wlist_del (WL *head, WL elem)	2428	wlist_del (WL *head, WL elem)
1873	{	2429	{
1874	while (*head)	2430	while (*head)
1875	{	2431	{
1876	if (*head == elem)	2432	if (expect_true (*head == elem))
1877	{	2433	{
1878	*head = elem->next;	2434	*head = elem->next;
1879	return;	2435	break;
1880	}	2436	}
1881		2437
1882	head = &(*head)->next;	2438	head = &(*head)->next;
1883	}	2439	}
1884	}	2440	}
1885		2441
1886	void inline_speed	2442	/* internal, faster, version of ev_clear_pending */
		2443	inline_speed void
1887	clear_pending (EV_P_ W w)	2444	clear_pending (EV_P_ W w)
1888	{	2445	{
1889	if (w->pending)	2446	if (w->pending)
1890	{	2447	{
1891	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2448	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1892	w->pending = 0;	2449	w->pending = 0;
1893	}	2450	}
1894	}	2451	}
1895		2452
1896	int	2453	int
…		…
1900	int pending = w_->pending;	2457	int pending = w_->pending;
1901		2458
1902	if (expect_true (pending))	2459	if (expect_true (pending))
1903	{	2460	{
1904	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2461	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2462	p->w = (W)&pending_w;
1905	w_->pending = 0;	2463	w_->pending = 0;
1906	p->w = 0;
1907	return p->events;	2464	return p->events;
1908	}	2465	}
1909	else	2466	else
1910	return 0;	2467	return 0;
1911	}	2468	}
1912		2469
1913	void inline_size	2470	inline_size void
1914	pri_adjust (EV_P_ W w)	2471	pri_adjust (EV_P_ W w)
1915	{	2472	{
1916	int pri = w->priority;	2473	int pri = ev_priority (w);
1917	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2474	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1918	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2475	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1919	w->priority = pri;	2476	ev_set_priority (w, pri);
1920	}	2477	}
1921		2478
1922	void inline_speed	2479	inline_speed void
1923	ev_start (EV_P_ W w, int active)	2480	ev_start (EV_P_ W w, int active)
1924	{	2481	{
1925	pri_adjust (EV_A_ w);	2482	pri_adjust (EV_A_ w);
1926	w->active = active;	2483	w->active = active;
1927	ev_ref (EV_A);	2484	ev_ref (EV_A);
1928	}	2485	}
1929		2486
1930	void inline_size	2487	inline_size void
1931	ev_stop (EV_P_ W w)	2488	ev_stop (EV_P_ W w)
1932	{	2489	{
1933	ev_unref (EV_A);	2490	ev_unref (EV_A);
1934	w->active = 0;	2491	w->active = 0;
1935	}	2492	}
…		…
1942	int fd = w->fd;	2499	int fd = w->fd;
1943		2500
1944	if (expect_false (ev_is_active (w)))	2501	if (expect_false (ev_is_active (w)))
1945	return;	2502	return;
1946		2503
1947	assert (("ev_io_start called with negative fd", fd >= 0));	2504	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2505	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2506
		2507	EV_FREQUENT_CHECK;
1948		2508
1949	ev_start (EV_A_ (W)w, 1);	2509	ev_start (EV_A_ (W)w, 1);
1950	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2510	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1951	wlist_add (&anfds[fd].head, (WL)w);	2511	wlist_add (&anfds[fd].head, (WL)w);
1952		2512
1953	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2513	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1954	w->events &= ~EV_IOFDSET;	2514	w->events &= ~EV__IOFDSET;
		2515
		2516	EV_FREQUENT_CHECK;
1955	}	2517	}
1956		2518
1957	void noinline	2519	void noinline
1958	ev_io_stop (EV_P_ ev_io *w)	2520	ev_io_stop (EV_P_ ev_io *w)
1959	{	2521	{
1960	clear_pending (EV_A_ (W)w);	2522	clear_pending (EV_A_ (W)w);
1961	if (expect_false (!ev_is_active (w)))	2523	if (expect_false (!ev_is_active (w)))
1962	return;	2524	return;
1963		2525
1964	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2526	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2527
		2528	EV_FREQUENT_CHECK;
1965		2529
1966	wlist_del (&anfds[w->fd].head, (WL)w);	2530	wlist_del (&anfds[w->fd].head, (WL)w);
1967	ev_stop (EV_A_ (W)w);	2531	ev_stop (EV_A_ (W)w);
1968		2532
1969	fd_change (EV_A_ w->fd, 1);	2533	fd_change (EV_A_ w->fd, 1);
		2534
		2535	EV_FREQUENT_CHECK;
1970	}	2536	}
1971		2537
1972	void noinline	2538	void noinline
1973	ev_timer_start (EV_P_ ev_timer *w)	2539	ev_timer_start (EV_P_ ev_timer *w)
1974	{	2540	{
1975	if (expect_false (ev_is_active (w)))	2541	if (expect_false (ev_is_active (w)))
1976	return;	2542	return;
1977		2543
1978	ev_at (w) += mn_now;	2544	ev_at (w) += mn_now;
1979		2545
1980	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2546	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1981		2547
		2548	EV_FREQUENT_CHECK;
		2549
		2550	++timercnt;
1982	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);	2551	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1983	array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2);	2552	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1984	timers [ev_active (w)] = (WT)w;	2553	ANHE_w (timers [ev_active (w)]) = (WT)w;
		2554	ANHE_at_cache (timers [ev_active (w)]);
1985	upheap (timers, ev_active (w));	2555	upheap (timers, ev_active (w));
1986		2556
		2557	EV_FREQUENT_CHECK;
		2558
1987	/*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/	2559	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1988	}	2560	}
1989		2561
1990	void noinline	2562	void noinline
1991	ev_timer_stop (EV_P_ ev_timer *w)	2563	ev_timer_stop (EV_P_ ev_timer *w)
1992	{	2564	{
1993	clear_pending (EV_A_ (W)w);	2565	clear_pending (EV_A_ (W)w);
1994	if (expect_false (!ev_is_active (w)))	2566	if (expect_false (!ev_is_active (w)))
1995	return;	2567	return;
1996		2568
		2569	EV_FREQUENT_CHECK;
		2570
1997	{	2571	{
1998	int active = ev_active (w);	2572	int active = ev_active (w);
1999		2573
2000	assert (("internal timer heap corruption", timers [active] == (WT)w));	2574	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2001		2575
		2576	--timercnt;
		2577
2002	if (expect_true (active < timercnt + HEAP0 - 1))	2578	if (expect_true (active < timercnt + HEAP0))
2003	{	2579	{
2004	timers [active] = timers [timercnt + HEAP0 - 1];	2580	timers [active] = timers [timercnt + HEAP0];
2005	adjustheap (timers, timercnt, active);	2581	adjustheap (timers, timercnt, active);
2006	}	2582	}
2007
2008	--timercnt;
2009	}	2583	}
		2584
		2585	EV_FREQUENT_CHECK;
2010		2586
2011	ev_at (w) -= mn_now;	2587	ev_at (w) -= mn_now;
2012		2588
2013	ev_stop (EV_A_ (W)w);	2589	ev_stop (EV_A_ (W)w);
2014	}	2590	}
2015		2591
2016	void noinline	2592	void noinline
2017	ev_timer_again (EV_P_ ev_timer *w)	2593	ev_timer_again (EV_P_ ev_timer *w)
2018	{	2594	{
		2595	EV_FREQUENT_CHECK;
		2596
2019	if (ev_is_active (w))	2597	if (ev_is_active (w))
2020	{	2598	{
2021	if (w->repeat)	2599	if (w->repeat)
2022	{	2600	{
2023	ev_at (w) = mn_now + w->repeat;	2601	ev_at (w) = mn_now + w->repeat;
		2602	ANHE_at_cache (timers [ev_active (w)]);
2024	adjustheap (timers, timercnt, ev_active (w));	2603	adjustheap (timers, timercnt, ev_active (w));
2025	}	2604	}
2026	else	2605	else
2027	ev_timer_stop (EV_A_ w);	2606	ev_timer_stop (EV_A_ w);
2028	}	2607	}
2029	else if (w->repeat)	2608	else if (w->repeat)
2030	{	2609	{
2031	ev_at (w) = w->repeat;	2610	ev_at (w) = w->repeat;
2032	ev_timer_start (EV_A_ w);	2611	ev_timer_start (EV_A_ w);
2033	}	2612	}
		2613
		2614	EV_FREQUENT_CHECK;
		2615	}
		2616
		2617	ev_tstamp
		2618	ev_timer_remaining (EV_P_ ev_timer *w)
		2619	{
		2620	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2034	}	2621	}
2035		2622
2036	#if EV_PERIODIC_ENABLE	2623	#if EV_PERIODIC_ENABLE
2037	void noinline	2624	void noinline
2038	ev_periodic_start (EV_P_ ev_periodic *w)	2625	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
2042		2629
2043	if (w->reschedule_cb)	2630	if (w->reschedule_cb)
2044	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2631	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2045	else if (w->interval)	2632	else if (w->interval)
2046	{	2633	{
2047	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2634	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2048	/* this formula differs from the one in periodic_reify because we do not always round up */	2635	/* this formula differs from the one in periodic_reify because we do not always round up */
2049	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2636	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2050	}	2637	}
2051	else	2638	else
2052	ev_at (w) = w->offset;	2639	ev_at (w) = w->offset;
2053		2640
		2641	EV_FREQUENT_CHECK;
		2642
		2643	++periodiccnt;
2054	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);	2644	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2055	array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2);	2645	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2056	periodics [ev_active (w)] = (WT)w;	2646	ANHE_w (periodics [ev_active (w)]) = (WT)w;
		2647	ANHE_at_cache (periodics [ev_active (w)]);
2057	upheap (periodics, ev_active (w));	2648	upheap (periodics, ev_active (w));
2058		2649
		2650	EV_FREQUENT_CHECK;
		2651
2059	/*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/	2652	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2060	}	2653	}
2061		2654
2062	void noinline	2655	void noinline
2063	ev_periodic_stop (EV_P_ ev_periodic *w)	2656	ev_periodic_stop (EV_P_ ev_periodic *w)
2064	{	2657	{
2065	clear_pending (EV_A_ (W)w);	2658	clear_pending (EV_A_ (W)w);
2066	if (expect_false (!ev_is_active (w)))	2659	if (expect_false (!ev_is_active (w)))
2067	return;	2660	return;
2068		2661
		2662	EV_FREQUENT_CHECK;
		2663
2069	{	2664	{
2070	int active = ev_active (w);	2665	int active = ev_active (w);
2071		2666
2072	assert (("internal periodic heap corruption", periodics [active] == (WT)w));	2667	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2073		2668
		2669	--periodiccnt;
		2670
2074	if (expect_true (active < periodiccnt + HEAP0 - 1))	2671	if (expect_true (active < periodiccnt + HEAP0))
2075	{	2672	{
2076	periodics [active] = periodics [periodiccnt + HEAP0 - 1];	2673	periodics [active] = periodics [periodiccnt + HEAP0];
2077	adjustheap (periodics, periodiccnt, active);	2674	adjustheap (periodics, periodiccnt, active);
2078	}	2675	}
2079
2080	--periodiccnt;
2081	}	2676	}
		2677
		2678	EV_FREQUENT_CHECK;
2082		2679
2083	ev_stop (EV_A_ (W)w);	2680	ev_stop (EV_A_ (W)w);
2084	}	2681	}
2085		2682
2086	void noinline	2683	void noinline
…		…
2097	#endif	2694	#endif
2098		2695
2099	void noinline	2696	void noinline
2100	ev_signal_start (EV_P_ ev_signal *w)	2697	ev_signal_start (EV_P_ ev_signal *w)
2101	{	2698	{
2102	#if EV_MULTIPLICITY
2103	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2104	#endif
2105	if (expect_false (ev_is_active (w)))	2699	if (expect_false (ev_is_active (w)))
2106	return;	2700	return;
2107		2701
2108	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2702	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2109		2703
2110	evpipe_init (EV_A);	2704	#if EV_MULTIPLICITY
		2705	assert (("libev: a signal must not be attached to two different loops",
		2706	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2111		2707
		2708	signals [w->signum - 1].loop = EV_A;
		2709	#endif
		2710
		2711	EV_FREQUENT_CHECK;
		2712
		2713	#if EV_USE_SIGNALFD
		2714	if (sigfd == -2)
2112	{	2715	{
2113	#ifndef _WIN32	2716	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2114	sigset_t full, prev;	2717	if (sigfd < 0 && errno == EINVAL)
2115	sigfillset (&full);	2718	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2116	sigprocmask (SIG_SETMASK, &full, &prev);
2117	#endif
2118		2719
2119	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2720	if (sigfd >= 0)
		2721	{
		2722	fd_intern (sigfd); /* doing it twice will not hurt */
2120		2723
2121	#ifndef _WIN32	2724	sigemptyset (&sigfd_set);
2122	sigprocmask (SIG_SETMASK, &prev, 0);	2725
2123	#endif	2726	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2727	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2728	ev_io_start (EV_A_ &sigfd_w);
		2729	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2730	}
2124	}	2731	}
		2732
		2733	if (sigfd >= 0)
		2734	{
		2735	/* TODO: check .head */
		2736	sigaddset (&sigfd_set, w->signum);
		2737	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2738
		2739	signalfd (sigfd, &sigfd_set, 0);
		2740	}
		2741	#endif
2125		2742
2126	ev_start (EV_A_ (W)w, 1);	2743	ev_start (EV_A_ (W)w, 1);
2127	wlist_add (&signals [w->signum - 1].head, (WL)w);	2744	wlist_add (&signals [w->signum - 1].head, (WL)w);
2128		2745
2129	if (!((WL)w)->next)	2746	if (!((WL)w)->next)
		2747	# if EV_USE_SIGNALFD
		2748	if (sigfd < 0) /*TODO*/
		2749	# endif
2130	{	2750	{
2131	#if _WIN32	2751	# if _WIN32
		2752	evpipe_init (EV_A);
		2753
2132	signal (w->signum, ev_sighandler);	2754	signal (w->signum, ev_sighandler);
2133	#else	2755	# else
2134	struct sigaction sa;	2756	struct sigaction sa;
		2757
		2758	evpipe_init (EV_A);
		2759
2135	sa.sa_handler = ev_sighandler;	2760	sa.sa_handler = ev_sighandler;
2136	sigfillset (&sa.sa_mask);	2761	sigfillset (&sa.sa_mask);
2137	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2762	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2138	sigaction (w->signum, &sa, 0);	2763	sigaction (w->signum, &sa, 0);
		2764
		2765	sigemptyset (&sa.sa_mask);
		2766	sigaddset (&sa.sa_mask, w->signum);
		2767	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2139	#endif	2768	#endif
2140	}	2769	}
		2770
		2771	EV_FREQUENT_CHECK;
2141	}	2772	}
2142		2773
2143	void noinline	2774	void noinline
2144	ev_signal_stop (EV_P_ ev_signal *w)	2775	ev_signal_stop (EV_P_ ev_signal *w)
2145	{	2776	{
2146	clear_pending (EV_A_ (W)w);	2777	clear_pending (EV_A_ (W)w);
2147	if (expect_false (!ev_is_active (w)))	2778	if (expect_false (!ev_is_active (w)))
2148	return;	2779	return;
2149		2780
		2781	EV_FREQUENT_CHECK;
		2782
2150	wlist_del (&signals [w->signum - 1].head, (WL)w);	2783	wlist_del (&signals [w->signum - 1].head, (WL)w);
2151	ev_stop (EV_A_ (W)w);	2784	ev_stop (EV_A_ (W)w);
2152		2785
2153	if (!signals [w->signum - 1].head)	2786	if (!signals [w->signum - 1].head)
		2787	{
		2788	#if EV_MULTIPLICITY
		2789	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2790	#endif
		2791	#if EV_USE_SIGNALFD
		2792	if (sigfd >= 0)
		2793	{
		2794	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2795	sigdelset (&sigfd_set, w->signum);
		2796	signalfd (sigfd, &sigfd_set, 0);
		2797	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2798	/*TODO: maybe unblock signal? */
		2799	}
		2800	else
		2801	#endif
2154	signal (w->signum, SIG_DFL);	2802	signal (w->signum, SIG_DFL);
		2803	}
		2804
		2805	EV_FREQUENT_CHECK;
2155	}	2806	}
2156		2807
2157	void	2808	void
2158	ev_child_start (EV_P_ ev_child *w)	2809	ev_child_start (EV_P_ ev_child *w)
2159	{	2810	{
2160	#if EV_MULTIPLICITY	2811	#if EV_MULTIPLICITY
2161	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2812	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2162	#endif	2813	#endif
2163	if (expect_false (ev_is_active (w)))	2814	if (expect_false (ev_is_active (w)))
2164	return;	2815	return;
2165		2816
		2817	EV_FREQUENT_CHECK;
		2818
2166	ev_start (EV_A_ (W)w, 1);	2819	ev_start (EV_A_ (W)w, 1);
2167	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2820	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2821
		2822	EV_FREQUENT_CHECK;
2168	}	2823	}
2169		2824
2170	void	2825	void
2171	ev_child_stop (EV_P_ ev_child *w)	2826	ev_child_stop (EV_P_ ev_child *w)
2172	{	2827	{
2173	clear_pending (EV_A_ (W)w);	2828	clear_pending (EV_A_ (W)w);
2174	if (expect_false (!ev_is_active (w)))	2829	if (expect_false (!ev_is_active (w)))
2175	return;	2830	return;
2176		2831
		2832	EV_FREQUENT_CHECK;
		2833
2177	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2834	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2178	ev_stop (EV_A_ (W)w);	2835	ev_stop (EV_A_ (W)w);
		2836
		2837	EV_FREQUENT_CHECK;
2179	}	2838	}
2180		2839
2181	#if EV_STAT_ENABLE	2840	#if EV_STAT_ENABLE
2182		2841
2183	# ifdef _WIN32	2842	# ifdef _WIN32
2184	# undef lstat	2843	# undef lstat
2185	# define lstat(a,b) _stati64 (a,b)	2844	# define lstat(a,b) _stati64 (a,b)
2186	# endif	2845	# endif
2187		2846
2188	#define DEF_STAT_INTERVAL 5.0074891	2847	#define DEF_STAT_INTERVAL 5.0074891
		2848	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2189	#define MIN_STAT_INTERVAL 0.1074891	2849	#define MIN_STAT_INTERVAL 0.1074891
2190		2850
2191	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2851	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2192		2852
2193	#if EV_USE_INOTIFY	2853	#if EV_USE_INOTIFY
2194	# define EV_INOTIFY_BUFSIZE 8192	2854	# define EV_INOTIFY_BUFSIZE 8192
…		…
2196	static void noinline	2856	static void noinline
2197	infy_add (EV_P_ ev_stat *w)	2857	infy_add (EV_P_ ev_stat *w)
2198	{	2858	{
2199	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);	2859	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);
2200		2860
2201	if (w->wd < 0)	2861	if (w->wd >= 0)
		2862	{
		2863	struct statfs sfs;
		2864
		2865	/* now local changes will be tracked by inotify, but remote changes won't */
		2866	/* unless the filesystem is known to be local, we therefore still poll */
		2867	/* also do poll on <2.6.25, but with normal frequency */
		2868
		2869	if (!fs_2625)
		2870	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2871	else if (!statfs (w->path, &sfs)
		2872	&& (sfs.f_type == 0x1373 /* devfs */
		2873	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2874	|| sfs.f_type == 0x3153464a /* jfs */
		2875	|| sfs.f_type == 0x52654973 /* reiser3 */
		2876	|| sfs.f_type == 0x01021994 /* tempfs */
		2877	|| sfs.f_type == 0x58465342 /* xfs */))
		2878	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2879	else
		2880	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2202	{	2881	}
2203	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2882	else
		2883	{
		2884	/* can't use inotify, continue to stat */
		2885	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2204		2886
2205	/* monitor some parent directory for speedup hints */	2887	/* if path is not there, monitor some parent directory for speedup hints */
2206	/* note that exceeding the hardcoded limit is not a correctness issue, */	2888	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2207	/* but an efficiency issue only */	2889	/* but an efficiency issue only */
2208	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2890	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2209	{	2891	{
2210	char path [4096];	2892	char path [4096];
2211	strcpy (path, w->path);	2893	strcpy (path, w->path);
…		…
2215	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2897	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2216	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2898	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2217		2899
2218	char *pend = strrchr (path, '/');	2900	char *pend = strrchr (path, '/');
2219		2901
2220	if (!pend)	2902	if (!pend || pend == path)
2221	break; /* whoops, no '/', complain to your admin */	2903	break;
2222		2904
2223	*pend = 0;	2905	*pend = 0;
2224	w->wd = inotify_add_watch (fs_fd, path, mask);	2906	w->wd = inotify_add_watch (fs_fd, path, mask);
2225	}	2907	}
2226	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2908	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2227	}	2909	}
2228	}	2910	}
2229	else
2230	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2231		2911
2232	if (w->wd >= 0)	2912	if (w->wd >= 0)
2233	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2913	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2914
		2915	/* now re-arm timer, if required */
		2916	if (ev_is_active (&w->timer)) ev_ref (EV_A);
		2917	ev_timer_again (EV_A_ &w->timer);
		2918	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2234	}	2919	}
2235		2920
2236	static void noinline	2921	static void noinline
2237	infy_del (EV_P_ ev_stat *w)	2922	infy_del (EV_P_ ev_stat *w)
2238	{	2923	{
…		…
2252		2937
2253	static void noinline	2938	static void noinline
2254	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2939	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2255	{	2940	{
2256	if (slot < 0)	2941	if (slot < 0)
2257	/* overflow, need to check for all hahs slots */	2942	/* overflow, need to check for all hash slots */
2258	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2943	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2259	infy_wd (EV_A_ slot, wd, ev);	2944	infy_wd (EV_A_ slot, wd, ev);
2260	else	2945	else
2261	{	2946	{
2262	WL w_;	2947	WL w_;
…		…
2268		2953
2269	if (w->wd == wd || wd == -1)	2954	if (w->wd == wd || wd == -1)
2270	{	2955	{
2271	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2956	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2272	{	2957	{
		2958	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2273	w->wd = -1;	2959	w->wd = -1;
2274	infy_add (EV_A_ w); /* re-add, no matter what */	2960	infy_add (EV_A_ w); /* re-add, no matter what */
2275	}	2961	}
2276		2962
2277	stat_timer_cb (EV_A_ &w->timer, 0);	2963	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2290		2976
2291	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2977	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2292	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2978	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2293	}	2979	}
2294		2980
2295	void inline_size	2981	inline_size void
		2982	check_2625 (EV_P)
		2983	{
		2984	/* kernels < 2.6.25 are borked
		2985	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2986	*/
		2987	struct utsname buf;
		2988	int major, minor, micro;
		2989
		2990	if (uname (&buf))
		2991	return;
		2992
		2993	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2994	return;
		2995
		2996	if (major < 2
		2997	|| (major == 2 && minor < 6)
		2998	|| (major == 2 && minor == 6 && micro < 25))
		2999	return;
		3000
		3001	fs_2625 = 1;
		3002	}
		3003
		3004	inline_size int
		3005	infy_newfd (void)
		3006	{
		3007	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3008	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3009	if (fd >= 0)
		3010	return fd;
		3011	#endif
		3012	return inotify_init ();
		3013	}
		3014
		3015	inline_size void
2296	infy_init (EV_P)	3016	infy_init (EV_P)
2297	{	3017	{
2298	if (fs_fd != -2)	3018	if (fs_fd != -2)
2299	return;	3019	return;
2300		3020
		3021	fs_fd = -1;
		3022
		3023	check_2625 (EV_A);
		3024
2301	fs_fd = inotify_init ();	3025	fs_fd = infy_newfd ();
2302		3026
2303	if (fs_fd >= 0)	3027	if (fs_fd >= 0)
2304	{	3028	{
		3029	fd_intern (fs_fd);
2305	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3030	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2306	ev_set_priority (&fs_w, EV_MAXPRI);	3031	ev_set_priority (&fs_w, EV_MAXPRI);
2307	ev_io_start (EV_A_ &fs_w);	3032	ev_io_start (EV_A_ &fs_w);
		3033	ev_unref (EV_A);
2308	}	3034	}
2309	}	3035	}
2310		3036
2311	void inline_size	3037	inline_size void
2312	infy_fork (EV_P)	3038	infy_fork (EV_P)
2313	{	3039	{
2314	int slot;	3040	int slot;
2315		3041
2316	if (fs_fd < 0)	3042	if (fs_fd < 0)
2317	return;	3043	return;
2318		3044
		3045	ev_ref (EV_A);
		3046	ev_io_stop (EV_A_ &fs_w);
2319	close (fs_fd);	3047	close (fs_fd);
2320	fs_fd = inotify_init ();	3048	fs_fd = infy_newfd ();
		3049
		3050	if (fs_fd >= 0)
		3051	{
		3052	fd_intern (fs_fd);
		3053	ev_io_set (&fs_w, fs_fd, EV_READ);
		3054	ev_io_start (EV_A_ &fs_w);
		3055	ev_unref (EV_A);
		3056	}
2321		3057
2322	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3058	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2323	{	3059	{
2324	WL w_ = fs_hash [slot].head;	3060	WL w_ = fs_hash [slot].head;
2325	fs_hash [slot].head = 0;	3061	fs_hash [slot].head = 0;
…		…
2332	w->wd = -1;	3068	w->wd = -1;
2333		3069
2334	if (fs_fd >= 0)	3070	if (fs_fd >= 0)
2335	infy_add (EV_A_ w); /* re-add, no matter what */	3071	infy_add (EV_A_ w); /* re-add, no matter what */
2336	else	3072	else
		3073	{
		3074	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3075	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2337	ev_timer_start (EV_A_ &w->timer);	3076	ev_timer_again (EV_A_ &w->timer);
		3077	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3078	}
2338	}	3079	}
2339
2340	}	3080	}
2341	}	3081	}
2342		3082
		3083	#endif
		3084
		3085	#ifdef _WIN32
		3086	# define EV_LSTAT(p,b) _stati64 (p, b)
		3087	#else
		3088	# define EV_LSTAT(p,b) lstat (p, b)
2343	#endif	3089	#endif
2344		3090
2345	void	3091	void
2346	ev_stat_stat (EV_P_ ev_stat *w)	3092	ev_stat_stat (EV_P_ ev_stat *w)
2347	{	3093	{
…		…
2374	|| w->prev.st_atime != w->attr.st_atime	3120	|| w->prev.st_atime != w->attr.st_atime
2375	|| w->prev.st_mtime != w->attr.st_mtime	3121	|| w->prev.st_mtime != w->attr.st_mtime
2376	|| w->prev.st_ctime != w->attr.st_ctime	3122	|| w->prev.st_ctime != w->attr.st_ctime
2377	) {	3123	) {
2378	#if EV_USE_INOTIFY	3124	#if EV_USE_INOTIFY
		3125	if (fs_fd >= 0)
		3126	{
2379	infy_del (EV_A_ w);	3127	infy_del (EV_A_ w);
2380	infy_add (EV_A_ w);	3128	infy_add (EV_A_ w);
2381	ev_stat_stat (EV_A_ w); /* avoid race... */	3129	ev_stat_stat (EV_A_ w); /* avoid race... */
		3130	}
2382	#endif	3131	#endif
2383		3132
2384	ev_feed_event (EV_A_ w, EV_STAT);	3133	ev_feed_event (EV_A_ w, EV_STAT);
2385	}	3134	}
2386	}	3135	}
…		…
2389	ev_stat_start (EV_P_ ev_stat *w)	3138	ev_stat_start (EV_P_ ev_stat *w)
2390	{	3139	{
2391	if (expect_false (ev_is_active (w)))	3140	if (expect_false (ev_is_active (w)))
2392	return;	3141	return;
2393		3142
2394	/* since we use memcmp, we need to clear any padding data etc. */
2395	memset (&w->prev, 0, sizeof (ev_statdata));
2396	memset (&w->attr, 0, sizeof (ev_statdata));
2397
2398	ev_stat_stat (EV_A_ w);	3143	ev_stat_stat (EV_A_ w);
2399		3144
		3145	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2400	if (w->interval < MIN_STAT_INTERVAL)	3146	w->interval = MIN_STAT_INTERVAL;
2401	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2402		3147
2403	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3148	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2404	ev_set_priority (&w->timer, ev_priority (w));	3149	ev_set_priority (&w->timer, ev_priority (w));
2405		3150
2406	#if EV_USE_INOTIFY	3151	#if EV_USE_INOTIFY
2407	infy_init (EV_A);	3152	infy_init (EV_A);
2408		3153
2409	if (fs_fd >= 0)	3154	if (fs_fd >= 0)
2410	infy_add (EV_A_ w);	3155	infy_add (EV_A_ w);
2411	else	3156	else
2412	#endif	3157	#endif
		3158	{
2413	ev_timer_start (EV_A_ &w->timer);	3159	ev_timer_again (EV_A_ &w->timer);
		3160	ev_unref (EV_A);
		3161	}
2414		3162
2415	ev_start (EV_A_ (W)w, 1);	3163	ev_start (EV_A_ (W)w, 1);
		3164
		3165	EV_FREQUENT_CHECK;
2416	}	3166	}
2417		3167
2418	void	3168	void
2419	ev_stat_stop (EV_P_ ev_stat *w)	3169	ev_stat_stop (EV_P_ ev_stat *w)
2420	{	3170	{
2421	clear_pending (EV_A_ (W)w);	3171	clear_pending (EV_A_ (W)w);
2422	if (expect_false (!ev_is_active (w)))	3172	if (expect_false (!ev_is_active (w)))
2423	return;	3173	return;
2424		3174
		3175	EV_FREQUENT_CHECK;
		3176
2425	#if EV_USE_INOTIFY	3177	#if EV_USE_INOTIFY
2426	infy_del (EV_A_ w);	3178	infy_del (EV_A_ w);
2427	#endif	3179	#endif
		3180
		3181	if (ev_is_active (&w->timer))
		3182	{
		3183	ev_ref (EV_A);
2428	ev_timer_stop (EV_A_ &w->timer);	3184	ev_timer_stop (EV_A_ &w->timer);
		3185	}
2429		3186
2430	ev_stop (EV_A_ (W)w);	3187	ev_stop (EV_A_ (W)w);
		3188
		3189	EV_FREQUENT_CHECK;
2431	}	3190	}
2432	#endif	3191	#endif
2433		3192
2434	#if EV_IDLE_ENABLE	3193	#if EV_IDLE_ENABLE
2435	void	3194	void
…		…
2437	{	3196	{
2438	if (expect_false (ev_is_active (w)))	3197	if (expect_false (ev_is_active (w)))
2439	return;	3198	return;
2440		3199
2441	pri_adjust (EV_A_ (W)w);	3200	pri_adjust (EV_A_ (W)w);
		3201
		3202	EV_FREQUENT_CHECK;
2442		3203
2443	{	3204	{
2444	int active = ++idlecnt [ABSPRI (w)];	3205	int active = ++idlecnt [ABSPRI (w)];
2445		3206
2446	++idleall;	3207	++idleall;
2447	ev_start (EV_A_ (W)w, active);	3208	ev_start (EV_A_ (W)w, active);
2448		3209
2449	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	3210	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2450	idles [ABSPRI (w)][active - 1] = w;	3211	idles [ABSPRI (w)][active - 1] = w;
2451	}	3212	}
		3213
		3214	EV_FREQUENT_CHECK;
2452	}	3215	}
2453		3216
2454	void	3217	void
2455	ev_idle_stop (EV_P_ ev_idle *w)	3218	ev_idle_stop (EV_P_ ev_idle *w)
2456	{	3219	{
2457	clear_pending (EV_A_ (W)w);	3220	clear_pending (EV_A_ (W)w);
2458	if (expect_false (!ev_is_active (w)))	3221	if (expect_false (!ev_is_active (w)))
2459	return;	3222	return;
2460		3223
		3224	EV_FREQUENT_CHECK;
		3225
2461	{	3226	{
2462	int active = ev_active (w);	3227	int active = ev_active (w);
2463		3228
2464	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3229	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2465	ev_active (idles [ABSPRI (w)][active - 1]) = active;	3230	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2466		3231
2467	ev_stop (EV_A_ (W)w);	3232	ev_stop (EV_A_ (W)w);
2468	--idleall;	3233	--idleall;
2469	}	3234	}
		3235
		3236	EV_FREQUENT_CHECK;
2470	}	3237	}
2471	#endif	3238	#endif
2472		3239
2473	void	3240	void
2474	ev_prepare_start (EV_P_ ev_prepare *w)	3241	ev_prepare_start (EV_P_ ev_prepare *w)
2475	{	3242	{
2476	if (expect_false (ev_is_active (w)))	3243	if (expect_false (ev_is_active (w)))
2477	return;	3244	return;
		3245
		3246	EV_FREQUENT_CHECK;
2478		3247
2479	ev_start (EV_A_ (W)w, ++preparecnt);	3248	ev_start (EV_A_ (W)w, ++preparecnt);
2480	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3249	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2481	prepares [preparecnt - 1] = w;	3250	prepares [preparecnt - 1] = w;
		3251
		3252	EV_FREQUENT_CHECK;
2482	}	3253	}
2483		3254
2484	void	3255	void
2485	ev_prepare_stop (EV_P_ ev_prepare *w)	3256	ev_prepare_stop (EV_P_ ev_prepare *w)
2486	{	3257	{
2487	clear_pending (EV_A_ (W)w);	3258	clear_pending (EV_A_ (W)w);
2488	if (expect_false (!ev_is_active (w)))	3259	if (expect_false (!ev_is_active (w)))
2489	return;	3260	return;
2490		3261
		3262	EV_FREQUENT_CHECK;
		3263
2491	{	3264	{
2492	int active = ev_active (w);	3265	int active = ev_active (w);
2493		3266
2494	prepares [active - 1] = prepares [--preparecnt];	3267	prepares [active - 1] = prepares [--preparecnt];
2495	ev_active (prepares [active - 1]) = active;	3268	ev_active (prepares [active - 1]) = active;
2496	}	3269	}
2497		3270
2498	ev_stop (EV_A_ (W)w);	3271	ev_stop (EV_A_ (W)w);
		3272
		3273	EV_FREQUENT_CHECK;
2499	}	3274	}
2500		3275
2501	void	3276	void
2502	ev_check_start (EV_P_ ev_check *w)	3277	ev_check_start (EV_P_ ev_check *w)
2503	{	3278	{
2504	if (expect_false (ev_is_active (w)))	3279	if (expect_false (ev_is_active (w)))
2505	return;	3280	return;
		3281
		3282	EV_FREQUENT_CHECK;
2506		3283
2507	ev_start (EV_A_ (W)w, ++checkcnt);	3284	ev_start (EV_A_ (W)w, ++checkcnt);
2508	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3285	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2509	checks [checkcnt - 1] = w;	3286	checks [checkcnt - 1] = w;
		3287
		3288	EV_FREQUENT_CHECK;
2510	}	3289	}
2511		3290
2512	void	3291	void
2513	ev_check_stop (EV_P_ ev_check *w)	3292	ev_check_stop (EV_P_ ev_check *w)
2514	{	3293	{
2515	clear_pending (EV_A_ (W)w);	3294	clear_pending (EV_A_ (W)w);
2516	if (expect_false (!ev_is_active (w)))	3295	if (expect_false (!ev_is_active (w)))
2517	return;	3296	return;
2518		3297
		3298	EV_FREQUENT_CHECK;
		3299
2519	{	3300	{
2520	int active = ev_active (w);	3301	int active = ev_active (w);
2521		3302
2522	checks [active - 1] = checks [--checkcnt];	3303	checks [active - 1] = checks [--checkcnt];
2523	ev_active (checks [active - 1]) = active;	3304	ev_active (checks [active - 1]) = active;
2524	}	3305	}
2525		3306
2526	ev_stop (EV_A_ (W)w);	3307	ev_stop (EV_A_ (W)w);
		3308
		3309	EV_FREQUENT_CHECK;
2527	}	3310	}
2528		3311
2529	#if EV_EMBED_ENABLE	3312	#if EV_EMBED_ENABLE
2530	void noinline	3313	void noinline
2531	ev_embed_sweep (EV_P_ ev_embed *w)	3314	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2548	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3331	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2549	{	3332	{
2550	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3333	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2551		3334
2552	{	3335	{
2553	struct ev_loop *loop = w->other;	3336	EV_P = w->other;
2554		3337
2555	while (fdchangecnt)	3338	while (fdchangecnt)
2556	{	3339	{
2557	fd_reify (EV_A);	3340	fd_reify (EV_A);
2558	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3341	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2559	}	3342	}
2560	}	3343	}
2561	}	3344	}
2562		3345
		3346	static void
		3347	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3348	{
		3349	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3350
		3351	ev_embed_stop (EV_A_ w);
		3352
		3353	{
		3354	EV_P = w->other;
		3355
		3356	ev_loop_fork (EV_A);
		3357	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3358	}
		3359
		3360	ev_embed_start (EV_A_ w);
		3361	}
		3362
2563	#if 0	3363	#if 0
2564	static void	3364	static void
2565	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3365	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2566	{	3366	{
2567	ev_idle_stop (EV_A_ idle);	3367	ev_idle_stop (EV_A_ idle);
…		…
2573	{	3373	{
2574	if (expect_false (ev_is_active (w)))	3374	if (expect_false (ev_is_active (w)))
2575	return;	3375	return;
2576		3376
2577	{	3377	{
2578	struct ev_loop *loop = w->other;	3378	EV_P = w->other;
2579	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3379	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2580	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3380	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2581	}	3381	}
		3382
		3383	EV_FREQUENT_CHECK;
2582		3384
2583	ev_set_priority (&w->io, ev_priority (w));	3385	ev_set_priority (&w->io, ev_priority (w));
2584	ev_io_start (EV_A_ &w->io);	3386	ev_io_start (EV_A_ &w->io);
2585		3387
2586	ev_prepare_init (&w->prepare, embed_prepare_cb);	3388	ev_prepare_init (&w->prepare, embed_prepare_cb);
2587	ev_set_priority (&w->prepare, EV_MINPRI);	3389	ev_set_priority (&w->prepare, EV_MINPRI);
2588	ev_prepare_start (EV_A_ &w->prepare);	3390	ev_prepare_start (EV_A_ &w->prepare);
2589		3391
		3392	ev_fork_init (&w->fork, embed_fork_cb);
		3393	ev_fork_start (EV_A_ &w->fork);
		3394
2590	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3395	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2591		3396
2592	ev_start (EV_A_ (W)w, 1);	3397	ev_start (EV_A_ (W)w, 1);
		3398
		3399	EV_FREQUENT_CHECK;
2593	}	3400	}
2594		3401
2595	void	3402	void
2596	ev_embed_stop (EV_P_ ev_embed *w)	3403	ev_embed_stop (EV_P_ ev_embed *w)
2597	{	3404	{
2598	clear_pending (EV_A_ (W)w);	3405	clear_pending (EV_A_ (W)w);
2599	if (expect_false (!ev_is_active (w)))	3406	if (expect_false (!ev_is_active (w)))
2600	return;	3407	return;
2601		3408
		3409	EV_FREQUENT_CHECK;
		3410
2602	ev_io_stop (EV_A_ &w->io);	3411	ev_io_stop (EV_A_ &w->io);
2603	ev_prepare_stop (EV_A_ &w->prepare);	3412	ev_prepare_stop (EV_A_ &w->prepare);
		3413	ev_fork_stop (EV_A_ &w->fork);
2604		3414
2605	ev_stop (EV_A_ (W)w);	3415	EV_FREQUENT_CHECK;
2606	}	3416	}
2607	#endif	3417	#endif
2608		3418
2609	#if EV_FORK_ENABLE	3419	#if EV_FORK_ENABLE
2610	void	3420	void
2611	ev_fork_start (EV_P_ ev_fork *w)	3421	ev_fork_start (EV_P_ ev_fork *w)
2612	{	3422	{
2613	if (expect_false (ev_is_active (w)))	3423	if (expect_false (ev_is_active (w)))
2614	return;	3424	return;
		3425
		3426	EV_FREQUENT_CHECK;
2615		3427
2616	ev_start (EV_A_ (W)w, ++forkcnt);	3428	ev_start (EV_A_ (W)w, ++forkcnt);
2617	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3429	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2618	forks [forkcnt - 1] = w;	3430	forks [forkcnt - 1] = w;
		3431
		3432	EV_FREQUENT_CHECK;
2619	}	3433	}
2620		3434
2621	void	3435	void
2622	ev_fork_stop (EV_P_ ev_fork *w)	3436	ev_fork_stop (EV_P_ ev_fork *w)
2623	{	3437	{
2624	clear_pending (EV_A_ (W)w);	3438	clear_pending (EV_A_ (W)w);
2625	if (expect_false (!ev_is_active (w)))	3439	if (expect_false (!ev_is_active (w)))
2626	return;	3440	return;
2627		3441
		3442	EV_FREQUENT_CHECK;
		3443
2628	{	3444	{
2629	int active = ev_active (w);	3445	int active = ev_active (w);
2630		3446
2631	forks [active - 1] = forks [--forkcnt];	3447	forks [active - 1] = forks [--forkcnt];
2632	ev_active (forks [active - 1]) = active;	3448	ev_active (forks [active - 1]) = active;
2633	}	3449	}
2634		3450
2635	ev_stop (EV_A_ (W)w);	3451	ev_stop (EV_A_ (W)w);
		3452
		3453	EV_FREQUENT_CHECK;
2636	}	3454	}
2637	#endif	3455	#endif
2638		3456
2639	#if EV_ASYNC_ENABLE	3457	#if EV_ASYNC_ENABLE
2640	void	3458	void
…		…
2642	{	3460	{
2643	if (expect_false (ev_is_active (w)))	3461	if (expect_false (ev_is_active (w)))
2644	return;	3462	return;
2645		3463
2646	evpipe_init (EV_A);	3464	evpipe_init (EV_A);
		3465
		3466	EV_FREQUENT_CHECK;
2647		3467
2648	ev_start (EV_A_ (W)w, ++asynccnt);	3468	ev_start (EV_A_ (W)w, ++asynccnt);
2649	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3469	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2650	asyncs [asynccnt - 1] = w;	3470	asyncs [asynccnt - 1] = w;
		3471
		3472	EV_FREQUENT_CHECK;
2651	}	3473	}
2652		3474
2653	void	3475	void
2654	ev_async_stop (EV_P_ ev_async *w)	3476	ev_async_stop (EV_P_ ev_async *w)
2655	{	3477	{
2656	clear_pending (EV_A_ (W)w);	3478	clear_pending (EV_A_ (W)w);
2657	if (expect_false (!ev_is_active (w)))	3479	if (expect_false (!ev_is_active (w)))
2658	return;	3480	return;
2659		3481
		3482	EV_FREQUENT_CHECK;
		3483
2660	{	3484	{
2661	int active = ev_active (w);	3485	int active = ev_active (w);
2662		3486
2663	asyncs [active - 1] = asyncs [--asynccnt];	3487	asyncs [active - 1] = asyncs [--asynccnt];
2664	ev_active (asyncs [active - 1]) = active;	3488	ev_active (asyncs [active - 1]) = active;
2665	}	3489	}
2666		3490
2667	ev_stop (EV_A_ (W)w);	3491	ev_stop (EV_A_ (W)w);
		3492
		3493	EV_FREQUENT_CHECK;
2668	}	3494	}
2669		3495
2670	void	3496	void
2671	ev_async_send (EV_P_ ev_async *w)	3497	ev_async_send (EV_P_ ev_async *w)
2672	{	3498	{
2673	w->sent = 1;	3499	w->sent = 1;
2674	evpipe_write (EV_A_ &gotasync);	3500	evpipe_write (EV_A_ &async_pending);
2675	}	3501	}
2676	#endif	3502	#endif
2677		3503
2678	/*****************************************************************************/	3504	/*****************************************************************************/
2679		3505
…		…
2689	once_cb (EV_P_ struct ev_once *once, int revents)	3515	once_cb (EV_P_ struct ev_once *once, int revents)
2690	{	3516	{
2691	void (*cb)(int revents, void *arg) = once->cb;	3517	void (*cb)(int revents, void *arg) = once->cb;
2692	void *arg = once->arg;	3518	void *arg = once->arg;
2693		3519
2694	ev_io_stop (EV_A_ &once->io);	3520	ev_io_stop (EV_A_ &once->io);
2695	ev_timer_stop (EV_A_ &once->to);	3521	ev_timer_stop (EV_A_ &once->to);
2696	ev_free (once);	3522	ev_free (once);
2697		3523
2698	cb (revents, arg);	3524	cb (revents, arg);
2699	}	3525	}
2700		3526
2701	static void	3527	static void
2702	once_cb_io (EV_P_ ev_io *w, int revents)	3528	once_cb_io (EV_P_ ev_io *w, int revents)
2703	{	3529	{
2704	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3530	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3531
		3532	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2705	}	3533	}
2706		3534
2707	static void	3535	static void
2708	once_cb_to (EV_P_ ev_timer *w, int revents)	3536	once_cb_to (EV_P_ ev_timer *w, int revents)
2709	{	3537	{
2710	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3538	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3539
		3540	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2711	}	3541	}
2712		3542
2713	void	3543	void
2714	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3544	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2715	{	3545	{
…		…
2737	ev_timer_set (&once->to, timeout, 0.);	3567	ev_timer_set (&once->to, timeout, 0.);
2738	ev_timer_start (EV_A_ &once->to);	3568	ev_timer_start (EV_A_ &once->to);
2739	}	3569	}
2740	}	3570	}
2741		3571
		3572	/*****************************************************************************/
		3573
		3574	#if EV_WALK_ENABLE
		3575	void
		3576	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3577	{
		3578	int i, j;
		3579	ev_watcher_list *wl, *wn;
		3580
		3581	if (types & (EV_IO | EV_EMBED))
		3582	for (i = 0; i < anfdmax; ++i)
		3583	for (wl = anfds [i].head; wl; )
		3584	{
		3585	wn = wl->next;
		3586
		3587	#if EV_EMBED_ENABLE
		3588	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3589	{
		3590	if (types & EV_EMBED)
		3591	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3592	}
		3593	else
		3594	#endif
		3595	#if EV_USE_INOTIFY
		3596	if (ev_cb ((ev_io *)wl) == infy_cb)
		3597	;
		3598	else
		3599	#endif
		3600	if ((ev_io *)wl != &pipe_w)
		3601	if (types & EV_IO)
		3602	cb (EV_A_ EV_IO, wl);
		3603
		3604	wl = wn;
		3605	}
		3606
		3607	if (types & (EV_TIMER | EV_STAT))
		3608	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3609	#if EV_STAT_ENABLE
		3610	/*TODO: timer is not always active*/
		3611	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3612	{
		3613	if (types & EV_STAT)
		3614	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3615	}
		3616	else
		3617	#endif
		3618	if (types & EV_TIMER)
		3619	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3620
		3621	#if EV_PERIODIC_ENABLE
		3622	if (types & EV_PERIODIC)
		3623	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3624	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3625	#endif
		3626
		3627	#if EV_IDLE_ENABLE
		3628	if (types & EV_IDLE)
		3629	for (j = NUMPRI; i--; )
		3630	for (i = idlecnt [j]; i--; )
		3631	cb (EV_A_ EV_IDLE, idles [j][i]);
		3632	#endif
		3633
		3634	#if EV_FORK_ENABLE
		3635	if (types & EV_FORK)
		3636	for (i = forkcnt; i--; )
		3637	if (ev_cb (forks [i]) != embed_fork_cb)
		3638	cb (EV_A_ EV_FORK, forks [i]);
		3639	#endif
		3640
		3641	#if EV_ASYNC_ENABLE
		3642	if (types & EV_ASYNC)
		3643	for (i = asynccnt; i--; )
		3644	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3645	#endif
		3646
		3647	if (types & EV_PREPARE)
		3648	for (i = preparecnt; i--; )
		3649	#if EV_EMBED_ENABLE
		3650	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3651	#endif
		3652	cb (EV_A_ EV_PREPARE, prepares [i]);
		3653
		3654	if (types & EV_CHECK)
		3655	for (i = checkcnt; i--; )
		3656	cb (EV_A_ EV_CHECK, checks [i]);
		3657
		3658	if (types & EV_SIGNAL)
		3659	for (i = 0; i < EV_NSIG - 1; ++i)
		3660	for (wl = signals [i].head; wl; )
		3661	{
		3662	wn = wl->next;
		3663	cb (EV_A_ EV_SIGNAL, wl);
		3664	wl = wn;
		3665	}
		3666
		3667	if (types & EV_CHILD)
		3668	for (i = EV_PID_HASHSIZE; i--; )
		3669	for (wl = childs [i]; wl; )
		3670	{
		3671	wn = wl->next;
		3672	cb (EV_A_ EV_CHILD, wl);
		3673	wl = wn;
		3674	}
		3675	/* EV_STAT 0x00001000 /* stat data changed */
		3676	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3677	}
		3678	#endif
		3679
2742	#if EV_MULTIPLICITY	3680	#if EV_MULTIPLICITY
2743	#include "ev_wrap.h"	3681	#include "ev_wrap.h"
2744	#endif	3682	#endif
2745		3683
2746	#ifdef __cplusplus	3684	#ifdef __cplusplus

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