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Comparing libev/ev.c (file contents):
Revision 1.220 by root, Sun Apr 6 09:53:17 2008 UTC vs.
Revision 1.319 by root, Wed Nov 18 10:25:22 2009 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
47	# include EV_CONFIG_H	47	# include EV_CONFIG_H
48	# else	48	# else
49	# include "config.h"	49	# include "config.h"
50	# endif	50	# endif
51		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
		64	# endif
		65
52	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
55	# endif	69	# endif
56	# ifndef EV_USE_REALTIME	70	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	71	# define EV_USE_REALTIME 0
58	# endif	72	# endif
59	# else	73	# else
60	# ifndef EV_USE_MONOTONIC	74	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	75	# define EV_USE_MONOTONIC 0
62	# endif	76	# endif
…		…
119	# else	133	# else
120	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
121	# endif	135	# endif
122	# endif	136	# endif
123		137
		138	# ifndef EV_USE_SIGNALFD
		139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		140	# define EV_USE_SIGNALFD 1
		141	# else
		142	# define EV_USE_SIGNALFD 0
		143	# endif
		144	# endif
		145
124	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
125	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
126	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD 1
127	# else	149	# else
128	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
129	# endif	151	# endif
130	# endif	152	# endif
131		153
132	#endif	154	#endif
133		155
134	#include <math.h>	156	#include <math.h>
135	#include <stdlib.h>	157	#include <stdlib.h>
		158	#include <string.h>
136	#include <fcntl.h>	159	#include <fcntl.h>
137	#include <stddef.h>	160	#include <stddef.h>
138		161
139	#include <stdio.h>	162	#include <stdio.h>
140		163
…		…
154	#ifndef _WIN32	177	#ifndef _WIN32
155	# include <sys/time.h>	178	# include <sys/time.h>
156	# include <sys/wait.h>	179	# include <sys/wait.h>
157	# include <unistd.h>	180	# include <unistd.h>
158	#else	181	#else
		182	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	183	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	184	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	185	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	186	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	187	# endif
164	#endif	188	#endif
165		189
166	/* this block tries to deduce configuration from header-defined symbols and defaults */	190	/* this block tries to deduce configuration from header-defined symbols and defaults */
167		191
		192	/* try to deduce the maximum number of signals on this platform */
		193	#if defined (EV_NSIG)
		194	/* use what's provided */
		195	#elif defined (NSIG)
		196	# define EV_NSIG (NSIG)
		197	#elif defined(_NSIG)
		198	# define EV_NSIG (_NSIG)
		199	#elif defined (SIGMAX)
		200	# define EV_NSIG (SIGMAX+1)
		201	#elif defined (SIG_MAX)
		202	# define EV_NSIG (SIG_MAX+1)
		203	#elif defined (_SIG_MAX)
		204	# define EV_NSIG (_SIG_MAX+1)
		205	#elif defined (MAXSIG)
		206	# define EV_NSIG (MAXSIG+1)
		207	#elif defined (MAX_SIG)
		208	# define EV_NSIG (MAX_SIG+1)
		209	#elif defined (SIGARRAYSIZE)
		210	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		211	#elif defined (_sys_nsig)
		212	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		213	#else
		214	# error "unable to find value for NSIG, please report"
		215	/* to make it compile regardless, just remove the above line */
		216	# define EV_NSIG 65
		217	#endif
		218
		219	#ifndef EV_USE_CLOCK_SYSCALL
		220	# if __linux && __GLIBC__ >= 2
		221	# define EV_USE_CLOCK_SYSCALL 1
		222	# else
		223	# define EV_USE_CLOCK_SYSCALL 0
		224	# endif
		225	#endif
		226
168	#ifndef EV_USE_MONOTONIC	227	#ifndef EV_USE_MONOTONIC
		228	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		229	# define EV_USE_MONOTONIC 1
		230	# else
169	# define EV_USE_MONOTONIC 0	231	# define EV_USE_MONOTONIC 0
		232	# endif
170	#endif	233	#endif
171		234
172	#ifndef EV_USE_REALTIME	235	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	236	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	237	#endif
175		238
176	#ifndef EV_USE_NANOSLEEP	239	#ifndef EV_USE_NANOSLEEP
		240	# if _POSIX_C_SOURCE >= 199309L
		241	# define EV_USE_NANOSLEEP 1
		242	# else
177	# define EV_USE_NANOSLEEP 0	243	# define EV_USE_NANOSLEEP 0
		244	# endif
178	#endif	245	#endif
179		246
180	#ifndef EV_USE_SELECT	247	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	248	# define EV_USE_SELECT 1
182	#endif	249	#endif
…		…
235	# else	302	# else
236	# define EV_USE_EVENTFD 0	303	# define EV_USE_EVENTFD 0
237	# endif	304	# endif
238	#endif	305	#endif
239		306
		307	#ifndef EV_USE_SIGNALFD
		308	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		309	# define EV_USE_SIGNALFD 1
		310	# else
		311	# define EV_USE_SIGNALFD 0
		312	# endif
		313	#endif
		314
		315	#if 0 /* debugging */
		316	# define EV_VERIFY 3
		317	# define EV_USE_4HEAP 1
		318	# define EV_HEAP_CACHE_AT 1
		319	#endif
		320
		321	#ifndef EV_VERIFY
		322	# define EV_VERIFY !EV_MINIMAL
		323	#endif
		324
		325	#ifndef EV_USE_4HEAP
		326	# define EV_USE_4HEAP !EV_MINIMAL
		327	#endif
		328
		329	#ifndef EV_HEAP_CACHE_AT
		330	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		331	#endif
		332
		333	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		334	/* which makes programs even slower. might work on other unices, too. */
		335	#if EV_USE_CLOCK_SYSCALL
		336	# include <syscall.h>
		337	# ifdef SYS_clock_gettime
		338	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		339	# undef EV_USE_MONOTONIC
		340	# define EV_USE_MONOTONIC 1
		341	# else
		342	# undef EV_USE_CLOCK_SYSCALL
		343	# define EV_USE_CLOCK_SYSCALL 0
		344	# endif
		345	#endif
		346
240	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	347	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
241		348
242	#ifndef CLOCK_MONOTONIC	349	#ifndef CLOCK_MONOTONIC
243	# undef EV_USE_MONOTONIC	350	# undef EV_USE_MONOTONIC
244	# define EV_USE_MONOTONIC 0	351	# define EV_USE_MONOTONIC 0
…		…
259	# include <sys/select.h>	366	# include <sys/select.h>
260	# endif	367	# endif
261	#endif	368	#endif
262		369
263	#if EV_USE_INOTIFY	370	#if EV_USE_INOTIFY
		371	# include <sys/utsname.h>
		372	# include <sys/statfs.h>
264	# include <sys/inotify.h>	373	# include <sys/inotify.h>
		374	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		375	# ifndef IN_DONT_FOLLOW
		376	# undef EV_USE_INOTIFY
		377	# define EV_USE_INOTIFY 0
		378	# endif
265	#endif	379	#endif
266		380
267	#if EV_SELECT_IS_WINSOCKET	381	#if EV_SELECT_IS_WINSOCKET
268	# include <winsock.h>	382	# include <winsock.h>
269	#endif	383	#endif
270		384
271	#if EV_USE_EVENTFD	385	#if EV_USE_EVENTFD
272	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	386	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		387	# include <stdint.h>
		388	# ifndef EFD_NONBLOCK
		389	# define EFD_NONBLOCK O_NONBLOCK
		390	# endif
		391	# ifndef EFD_CLOEXEC
		392	# ifdef O_CLOEXEC
		393	# define EFD_CLOEXEC O_CLOEXEC
		394	# else
		395	# define EFD_CLOEXEC 02000000
		396	# endif
		397	# endif
		398	# ifdef __cplusplus
		399	extern "C" {
		400	# endif
273	int eventfd (unsigned int initval, int flags);	401	int eventfd (unsigned int initval, int flags);
		402	# ifdef __cplusplus
		403	}
274	#endif	404	# endif
		405	#endif
		406
		407	#if EV_USE_SIGNALFD
		408	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		409	# include <stdint.h>
		410	# ifndef SFD_NONBLOCK
		411	# define SFD_NONBLOCK O_NONBLOCK
		412	# endif
		413	# ifndef SFD_CLOEXEC
		414	# ifdef O_CLOEXEC
		415	# define SFD_CLOEXEC O_CLOEXEC
		416	# else
		417	# define SFD_CLOEXEC 02000000
		418	# endif
		419	# endif
		420	# ifdef __cplusplus
		421	extern "C" {
		422	# endif
		423	int signalfd (int fd, const sigset_t *mask, int flags);
		424
		425	struct signalfd_siginfo
		426	{
		427	uint32_t ssi_signo;
		428	char pad[128 - sizeof (uint32_t)];
		429	};
		430	# ifdef __cplusplus
		431	}
		432	# endif
		433	#endif
		434
275		435
276	/**/	436	/**/
		437
		438	#if EV_VERIFY >= 3
		439	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		440	#else
		441	# define EV_FREQUENT_CHECK do { } while (0)
		442	#endif
277		443
278	/*	444	/*
279	* This is used to avoid floating point rounding problems.	445	* This is used to avoid floating point rounding problems.
280	* It is added to ev_rt_now when scheduling periodics	446	* It is added to ev_rt_now when scheduling periodics
281	* to ensure progress, time-wise, even when rounding	447	* to ensure progress, time-wise, even when rounding
…		…
285	*/	451	*/
286	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	452	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
287		453
288	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	454	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
289	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	455	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
290	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
291		456
292	#if __GNUC__ >= 4	457	#if __GNUC__ >= 4
293	# define expect(expr,value) __builtin_expect ((expr),(value))	458	# define expect(expr,value) __builtin_expect ((expr),(value))
294	# define noinline __attribute__ ((noinline))	459	# define noinline __attribute__ ((noinline))
295	#else	460	#else
296	# define expect(expr,value) (expr)	461	# define expect(expr,value) (expr)
297	# define noinline	462	# define noinline
298	# if __STDC_VERSION__ < 199901L	463	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
299	# define inline	464	# define inline
300	# endif	465	# endif
301	#endif	466	#endif
302		467
303	#define expect_false(expr) expect ((expr) != 0, 0)	468	#define expect_false(expr) expect ((expr) != 0, 0)
…		…
308	# define inline_speed static noinline	473	# define inline_speed static noinline
309	#else	474	#else
310	# define inline_speed static inline	475	# define inline_speed static inline
311	#endif	476	#endif
312		477
313	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	478	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		479
		480	#if EV_MINPRI == EV_MAXPRI
		481	# define ABSPRI(w) (((W)w), 0)
		482	#else
314	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	483	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		484	#endif
315		485
316	#define EMPTY /* required for microsofts broken pseudo-c compiler */	486	#define EMPTY /* required for microsofts broken pseudo-c compiler */
317	#define EMPTY2(a,b) /* used to suppress some warnings */	487	#define EMPTY2(a,b) /* used to suppress some warnings */
318		488
319	typedef ev_watcher *W;	489	typedef ev_watcher *W;
320	typedef ev_watcher_list *WL;	490	typedef ev_watcher_list *WL;
321	typedef ev_watcher_time *WT;	491	typedef ev_watcher_time *WT;
322		492
323	#if EV_USE_MONOTONIC	493	#define ev_active(w) ((W)(w))->active
		494	#define ev_at(w) ((WT)(w))->at
		495
		496	#if EV_USE_REALTIME
324	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	497	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
325	/* giving it a reasonably high chance of working on typical architetcures */	498	/* giving it a reasonably high chance of working on typical architetcures */
		499	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		500	#endif
		501
		502	#if EV_USE_MONOTONIC
326	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	503	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		504	#endif
		505
		506	#ifndef EV_FD_TO_WIN32_HANDLE
		507	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		508	#endif
		509	#ifndef EV_WIN32_HANDLE_TO_FD
		510	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0)
		511	#endif
		512	#ifndef EV_WIN32_CLOSE_FD
		513	# define EV_WIN32_CLOSE_FD(fd) close (fd)
327	#endif	514	#endif
328		515
329	#ifdef _WIN32	516	#ifdef _WIN32
330	# include "ev_win32.c"	517	# include "ev_win32.c"
331	#endif	518	#endif
…		…
339	{	526	{
340	syserr_cb = cb;	527	syserr_cb = cb;
341	}	528	}
342		529
343	static void noinline	530	static void noinline
344	syserr (const char *msg)	531	ev_syserr (const char *msg)
345	{	532	{
346	if (!msg)	533	if (!msg)
347	msg = "(libev) system error";	534	msg = "(libev) system error";
348		535
349	if (syserr_cb)	536	if (syserr_cb)
…		…
353	perror (msg);	540	perror (msg);
354	abort ();	541	abort ();
355	}	542	}
356	}	543	}
357		544
		545	static void *
		546	ev_realloc_emul (void *ptr, long size)
		547	{
		548	/* some systems, notably openbsd and darwin, fail to properly
		549	* implement realloc (x, 0) (as required by both ansi c-98 and
		550	* the single unix specification, so work around them here.
		551	*/
		552
		553	if (size)
		554	return realloc (ptr, size);
		555
		556	free (ptr);
		557	return 0;
		558	}
		559
358	static void *(*alloc)(void *ptr, long size);	560	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
359		561
360	void	562	void
361	ev_set_allocator (void *(*cb)(void *ptr, long size))	563	ev_set_allocator (void *(*cb)(void *ptr, long size))
362	{	564	{
363	alloc = cb;	565	alloc = cb;
364	}	566	}
365		567
366	inline_speed void *	568	inline_speed void *
367	ev_realloc (void *ptr, long size)	569	ev_realloc (void *ptr, long size)
368	{	570	{
369	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	571	ptr = alloc (ptr, size);
370		572
371	if (!ptr && size)	573	if (!ptr && size)
372	{	574	{
373	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	575	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
374	abort ();	576	abort ();
…		…
380	#define ev_malloc(size) ev_realloc (0, (size))	582	#define ev_malloc(size) ev_realloc (0, (size))
381	#define ev_free(ptr) ev_realloc ((ptr), 0)	583	#define ev_free(ptr) ev_realloc ((ptr), 0)
382		584
383	/*****************************************************************************/	585	/*****************************************************************************/
384		586
		587	/* set in reify when reification needed */
		588	#define EV_ANFD_REIFY 1
		589
		590	/* file descriptor info structure */
385	typedef struct	591	typedef struct
386	{	592	{
387	WL head;	593	WL head;
388	unsigned char events;	594	unsigned char events; /* the events watched for */
		595	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		596	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
389	unsigned char reify;	597	unsigned char unused;
		598	#if EV_USE_EPOLL
		599	unsigned int egen; /* generation counter to counter epoll bugs */
		600	#endif
390	#if EV_SELECT_IS_WINSOCKET	601	#if EV_SELECT_IS_WINSOCKET
391	SOCKET handle;	602	SOCKET handle;
392	#endif	603	#endif
393	} ANFD;	604	} ANFD;
394		605
		606	/* stores the pending event set for a given watcher */
395	typedef struct	607	typedef struct
396	{	608	{
397	W w;	609	W w;
398	int events;	610	int events; /* the pending event set for the given watcher */
399	} ANPENDING;	611	} ANPENDING;
400		612
401	#if EV_USE_INOTIFY	613	#if EV_USE_INOTIFY
		614	/* hash table entry per inotify-id */
402	typedef struct	615	typedef struct
403	{	616	{
404	WL head;	617	WL head;
405	} ANFS;	618	} ANFS;
		619	#endif
		620
		621	/* Heap Entry */
		622	#if EV_HEAP_CACHE_AT
		623	/* a heap element */
		624	typedef struct {
		625	ev_tstamp at;
		626	WT w;
		627	} ANHE;
		628
		629	#define ANHE_w(he) (he).w /* access watcher, read-write */
		630	#define ANHE_at(he) (he).at /* access cached at, read-only */
		631	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		632	#else
		633	/* a heap element */
		634	typedef WT ANHE;
		635
		636	#define ANHE_w(he) (he)
		637	#define ANHE_at(he) (he)->at
		638	#define ANHE_at_cache(he)
406	#endif	639	#endif
407		640
408	#if EV_MULTIPLICITY	641	#if EV_MULTIPLICITY
409		642
410	struct ev_loop	643	struct ev_loop
…		…
429		662
430	static int ev_default_loop_ptr;	663	static int ev_default_loop_ptr;
431		664
432	#endif	665	#endif
433		666
		667	#if EV_MINIMAL < 2
		668	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		669	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		670	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		671	#else
		672	# define EV_RELEASE_CB (void)0
		673	# define EV_ACQUIRE_CB (void)0
		674	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		675	#endif
		676
		677	#define EVUNLOOP_RECURSE 0x80
		678
434	/*****************************************************************************/	679	/*****************************************************************************/
435		680
		681	#ifndef EV_HAVE_EV_TIME
436	ev_tstamp	682	ev_tstamp
437	ev_time (void)	683	ev_time (void)
438	{	684	{
439	#if EV_USE_REALTIME	685	#if EV_USE_REALTIME
		686	if (expect_true (have_realtime))
		687	{
440	struct timespec ts;	688	struct timespec ts;
441	clock_gettime (CLOCK_REALTIME, &ts);	689	clock_gettime (CLOCK_REALTIME, &ts);
442	return ts.tv_sec + ts.tv_nsec * 1e-9;	690	return ts.tv_sec + ts.tv_nsec * 1e-9;
443	#else	691	}
		692	#endif
		693
444	struct timeval tv;	694	struct timeval tv;
445	gettimeofday (&tv, 0);	695	gettimeofday (&tv, 0);
446	return tv.tv_sec + tv.tv_usec * 1e-6;	696	return tv.tv_sec + tv.tv_usec * 1e-6;
447	#endif
448	}	697	}
		698	#endif
449		699
450	ev_tstamp inline_size	700	inline_size ev_tstamp
451	get_clock (void)	701	get_clock (void)
452	{	702	{
453	#if EV_USE_MONOTONIC	703	#if EV_USE_MONOTONIC
454	if (expect_true (have_monotonic))	704	if (expect_true (have_monotonic))
455	{	705	{
…		…
488	struct timeval tv;	738	struct timeval tv;
489		739
490	tv.tv_sec = (time_t)delay;	740	tv.tv_sec = (time_t)delay;
491	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	741	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
492		742
		743	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		744	/* something not guaranteed by newer posix versions, but guaranteed */
		745	/* by older ones */
493	select (0, 0, 0, 0, &tv);	746	select (0, 0, 0, 0, &tv);
494	#endif	747	#endif
495	}	748	}
496	}	749	}
497		750
498	/*****************************************************************************/	751	/*****************************************************************************/
499		752
500	int inline_size	753	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		754
		755	/* find a suitable new size for the given array, */
		756	/* hopefully by rounding to a ncie-to-malloc size */
		757	inline_size int
501	array_nextsize (int elem, int cur, int cnt)	758	array_nextsize (int elem, int cur, int cnt)
502	{	759	{
503	int ncur = cur + 1;	760	int ncur = cur + 1;
504		761
505	do	762	do
506	ncur <<= 1;	763	ncur <<= 1;
507	while (cnt > ncur);	764	while (cnt > ncur);
508		765
509	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	766	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
510	if (elem * ncur > 4096)	767	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
511	{	768	{
512	ncur *= elem;	769	ncur *= elem;
513	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	770	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
514	ncur = ncur - sizeof (void *) * 4;	771	ncur = ncur - sizeof (void *) * 4;
515	ncur /= elem;	772	ncur /= elem;
516	}	773	}
517		774
518	return ncur;	775	return ncur;
…		…
522	array_realloc (int elem, void *base, int *cur, int cnt)	779	array_realloc (int elem, void *base, int *cur, int cnt)
523	{	780	{
524	*cur = array_nextsize (elem, *cur, cnt);	781	*cur = array_nextsize (elem, *cur, cnt);
525	return ev_realloc (base, elem * *cur);	782	return ev_realloc (base, elem * *cur);
526	}	783	}
		784
		785	#define array_init_zero(base,count) \
		786	memset ((void *)(base), 0, sizeof (*(base)) * (count))
527		787
528	#define array_needsize(type,base,cur,cnt,init) \	788	#define array_needsize(type,base,cur,cnt,init) \
529	if (expect_false ((cnt) > (cur))) \	789	if (expect_false ((cnt) > (cur))) \
530	{ \	790	{ \
531	int ocur_ = (cur); \	791	int ocur_ = (cur); \
…		…
543	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	803	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
544	}	804	}
545	#endif	805	#endif
546		806
547	#define array_free(stem, idx) \	807	#define array_free(stem, idx) \
548	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	808	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
549		809
550	/*****************************************************************************/	810	/*****************************************************************************/
		811
		812	/* dummy callback for pending events */
		813	static void noinline
		814	pendingcb (EV_P_ ev_prepare *w, int revents)
		815	{
		816	}
551		817
552	void noinline	818	void noinline
553	ev_feed_event (EV_P_ void *w, int revents)	819	ev_feed_event (EV_P_ void *w, int revents)
554	{	820	{
555	W w_ = (W)w;	821	W w_ = (W)w;
…		…
564	pendings [pri][w_->pending - 1].w = w_;	830	pendings [pri][w_->pending - 1].w = w_;
565	pendings [pri][w_->pending - 1].events = revents;	831	pendings [pri][w_->pending - 1].events = revents;
566	}	832	}
567	}	833	}
568		834
569	void inline_speed	835	inline_speed void
		836	feed_reverse (EV_P_ W w)
		837	{
		838	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		839	rfeeds [rfeedcnt++] = w;
		840	}
		841
		842	inline_size void
		843	feed_reverse_done (EV_P_ int revents)
		844	{
		845	do
		846	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		847	while (rfeedcnt);
		848	}
		849
		850	inline_speed void
570	queue_events (EV_P_ W *events, int eventcnt, int type)	851	queue_events (EV_P_ W *events, int eventcnt, int type)
571	{	852	{
572	int i;	853	int i;
573		854
574	for (i = 0; i < eventcnt; ++i)	855	for (i = 0; i < eventcnt; ++i)
575	ev_feed_event (EV_A_ events [i], type);	856	ev_feed_event (EV_A_ events [i], type);
576	}	857	}
577		858
578	/*****************************************************************************/	859	/*****************************************************************************/
579		860
580	void inline_size	861	inline_speed void
581	anfds_init (ANFD *base, int count)
582	{
583	while (count--)
584	{
585	base->head = 0;
586	base->events = EV_NONE;
587	base->reify = 0;
588
589	++base;
590	}
591	}
592
593	void inline_speed
594	fd_event (EV_P_ int fd, int revents)	862	fd_event_nc (EV_P_ int fd, int revents)
595	{	863	{
596	ANFD *anfd = anfds + fd;	864	ANFD *anfd = anfds + fd;
597	ev_io *w;	865	ev_io *w;
598		866
599	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	867	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
603	if (ev)	871	if (ev)
604	ev_feed_event (EV_A_ (W)w, ev);	872	ev_feed_event (EV_A_ (W)w, ev);
605	}	873	}
606	}	874	}
607		875
		876	/* do not submit kernel events for fds that have reify set */
		877	/* because that means they changed while we were polling for new events */
		878	inline_speed void
		879	fd_event (EV_P_ int fd, int revents)
		880	{
		881	ANFD *anfd = anfds + fd;
		882
		883	if (expect_true (!anfd->reify))
		884	fd_event_nc (EV_A_ fd, revents);
		885	}
		886
608	void	887	void
609	ev_feed_fd_event (EV_P_ int fd, int revents)	888	ev_feed_fd_event (EV_P_ int fd, int revents)
610	{	889	{
611	if (fd >= 0 && fd < anfdmax)	890	if (fd >= 0 && fd < anfdmax)
612	fd_event (EV_A_ fd, revents);	891	fd_event_nc (EV_A_ fd, revents);
613	}	892	}
614		893
615	void inline_size	894	/* make sure the external fd watch events are in-sync */
		895	/* with the kernel/libev internal state */
		896	inline_size void
616	fd_reify (EV_P)	897	fd_reify (EV_P)
617	{	898	{
618	int i;	899	int i;
619		900
620	for (i = 0; i < fdchangecnt; ++i)	901	for (i = 0; i < fdchangecnt; ++i)
…		…
629	events |= (unsigned char)w->events;	910	events |= (unsigned char)w->events;
630		911
631	#if EV_SELECT_IS_WINSOCKET	912	#if EV_SELECT_IS_WINSOCKET
632	if (events)	913	if (events)
633	{	914	{
634	unsigned long argp;	915	unsigned long arg;
635	#ifdef EV_FD_TO_WIN32_HANDLE
636	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	916	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
637	#else
638	anfd->handle = _get_osfhandle (fd);
639	#endif
640	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	917	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
641	}	918	}
642	#endif	919	#endif
643		920
644	{	921	{
645	unsigned char o_events = anfd->events;	922	unsigned char o_events = anfd->events;
646	unsigned char o_reify = anfd->reify;	923	unsigned char o_reify = anfd->reify;
647		924
648	anfd->reify = 0;	925	anfd->reify = 0;
649	anfd->events = events;	926	anfd->events = events;
650		927
651	if (o_events != events || o_reify & EV_IOFDSET)	928	if (o_events != events || o_reify & EV__IOFDSET)
652	backend_modify (EV_A_ fd, o_events, events);	929	backend_modify (EV_A_ fd, o_events, events);
653	}	930	}
654	}	931	}
655		932
656	fdchangecnt = 0;	933	fdchangecnt = 0;
657	}	934	}
658		935
659	void inline_size	936	/* something about the given fd changed */
		937	inline_size void
660	fd_change (EV_P_ int fd, int flags)	938	fd_change (EV_P_ int fd, int flags)
661	{	939	{
662	unsigned char reify = anfds [fd].reify;	940	unsigned char reify = anfds [fd].reify;
663	anfds [fd].reify |= flags;	941	anfds [fd].reify |= flags;
664		942
…		…
668	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	946	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
669	fdchanges [fdchangecnt - 1] = fd;	947	fdchanges [fdchangecnt - 1] = fd;
670	}	948	}
671	}	949	}
672		950
673	void inline_speed	951	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		952	inline_speed void
674	fd_kill (EV_P_ int fd)	953	fd_kill (EV_P_ int fd)
675	{	954	{
676	ev_io *w;	955	ev_io *w;
677		956
678	while ((w = (ev_io *)anfds [fd].head))	957	while ((w = (ev_io *)anfds [fd].head))
…		…
680	ev_io_stop (EV_A_ w);	959	ev_io_stop (EV_A_ w);
681	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	960	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
682	}	961	}
683	}	962	}
684		963
685	int inline_size	964	/* check whether the given fd is atcually valid, for error recovery */
		965	inline_size int
686	fd_valid (int fd)	966	fd_valid (int fd)
687	{	967	{
688	#ifdef _WIN32	968	#ifdef _WIN32
689	return _get_osfhandle (fd) != -1;	969	return _get_osfhandle (fd) != -1;
690	#else	970	#else
…		…
698	{	978	{
699	int fd;	979	int fd;
700		980
701	for (fd = 0; fd < anfdmax; ++fd)	981	for (fd = 0; fd < anfdmax; ++fd)
702	if (anfds [fd].events)	982	if (anfds [fd].events)
703	if (!fd_valid (fd) == -1 && errno == EBADF)	983	if (!fd_valid (fd) && errno == EBADF)
704	fd_kill (EV_A_ fd);	984	fd_kill (EV_A_ fd);
705	}	985	}
706		986
707	/* called on ENOMEM in select/poll to kill some fds and retry */	987	/* called on ENOMEM in select/poll to kill some fds and retry */
708	static void noinline	988	static void noinline
…		…
712		992
713	for (fd = anfdmax; fd--; )	993	for (fd = anfdmax; fd--; )
714	if (anfds [fd].events)	994	if (anfds [fd].events)
715	{	995	{
716	fd_kill (EV_A_ fd);	996	fd_kill (EV_A_ fd);
717	return;	997	break;
718	}	998	}
719	}	999	}
720		1000
721	/* usually called after fork if backend needs to re-arm all fds from scratch */	1001	/* usually called after fork if backend needs to re-arm all fds from scratch */
722	static void noinline	1002	static void noinline
…		…
726		1006
727	for (fd = 0; fd < anfdmax; ++fd)	1007	for (fd = 0; fd < anfdmax; ++fd)
728	if (anfds [fd].events)	1008	if (anfds [fd].events)
729	{	1009	{
730	anfds [fd].events = 0;	1010	anfds [fd].events = 0;
		1011	anfds [fd].emask = 0;
731	fd_change (EV_A_ fd, EV_IOFDSET | 1);	1012	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
732	}	1013	}
733	}	1014	}
734		1015
735	/*****************************************************************************/	1016	/*****************************************************************************/
736		1017
737	void inline_speed	1018	/*
738	upheap (WT *heap, int k)	1019	* the heap functions want a real array index. array index 0 uis guaranteed to not
739	{	1020	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
740	WT w = heap [k];	1021	* the branching factor of the d-tree.
		1022	*/
741		1023
742	while (k)	1024	/*
743	{	1025	* at the moment we allow libev the luxury of two heaps,
744	int p = (k - 1) >> 1;	1026	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		1027	* which is more cache-efficient.
		1028	* the difference is about 5% with 50000+ watchers.
		1029	*/
		1030	#if EV_USE_4HEAP
745		1031
746	if (heap [p]->at <= w->at)	1032	#define DHEAP 4
		1033	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		1034	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		1035	#define UPHEAP_DONE(p,k) ((p) == (k))
		1036
		1037	/* away from the root */
		1038	inline_speed void
		1039	downheap (ANHE *heap, int N, int k)
		1040	{
		1041	ANHE he = heap [k];
		1042	ANHE *E = heap + N + HEAP0;
		1043
		1044	for (;;)
		1045	{
		1046	ev_tstamp minat;
		1047	ANHE *minpos;
		1048	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
		1049
		1050	/* find minimum child */
		1051	if (expect_true (pos + DHEAP - 1 < E))
		1052	{
		1053	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1054	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1055	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1056	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1057	}
		1058	else if (pos < E)
		1059	{
		1060	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1061	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1062	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1063	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1064	}
		1065	else
747	break;	1066	break;
748		1067
		1068	if (ANHE_at (he) <= minat)
		1069	break;
		1070
		1071	heap [k] = *minpos;
		1072	ev_active (ANHE_w (*minpos)) = k;
		1073
		1074	k = minpos - heap;
		1075	}
		1076
		1077	heap [k] = he;
		1078	ev_active (ANHE_w (he)) = k;
		1079	}
		1080
		1081	#else /* 4HEAP */
		1082
		1083	#define HEAP0 1
		1084	#define HPARENT(k) ((k) >> 1)
		1085	#define UPHEAP_DONE(p,k) (!(p))
		1086
		1087	/* away from the root */
		1088	inline_speed void
		1089	downheap (ANHE *heap, int N, int k)
		1090	{
		1091	ANHE he = heap [k];
		1092
		1093	for (;;)
		1094	{
		1095	int c = k << 1;
		1096
		1097	if (c >= N + HEAP0)
		1098	break;
		1099
		1100	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		1101	? 1 : 0;
		1102
		1103	if (ANHE_at (he) <= ANHE_at (heap [c]))
		1104	break;
		1105
		1106	heap [k] = heap [c];
		1107	ev_active (ANHE_w (heap [k])) = k;
		1108
		1109	k = c;
		1110	}
		1111
		1112	heap [k] = he;
		1113	ev_active (ANHE_w (he)) = k;
		1114	}
		1115	#endif
		1116
		1117	/* towards the root */
		1118	inline_speed void
		1119	upheap (ANHE *heap, int k)
		1120	{
		1121	ANHE he = heap [k];
		1122
		1123	for (;;)
		1124	{
		1125	int p = HPARENT (k);
		1126
		1127	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1128	break;
		1129
749	heap [k] = heap [p];	1130	heap [k] = heap [p];
750	((W)heap [k])->active = k + 1;	1131	ev_active (ANHE_w (heap [k])) = k;
751	k = p;	1132	k = p;
752	}	1133	}
753		1134
754	heap [k] = w;	1135	heap [k] = he;
755	((W)heap [k])->active = k + 1;	1136	ev_active (ANHE_w (he)) = k;
756	}	1137	}
757		1138
758	void inline_speed	1139	/* move an element suitably so it is in a correct place */
759	downheap (WT *heap, int N, int k)	1140	inline_size void
760	{
761	WT w = heap [k];
762
763	for (;;)
764	{
765	int c = (k << 1) + 1;
766
767	if (c >= N)
768	break;
769
770	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
771	? 1 : 0;
772
773	if (w->at <= heap [c]->at)
774	break;
775
776	heap [k] = heap [c];
777	((W)heap [k])->active = k + 1;
778
779	k = c;
780	}
781
782	heap [k] = w;
783	((W)heap [k])->active = k + 1;
784	}
785
786	void inline_size
787	adjustheap (WT *heap, int N, int k)	1141	adjustheap (ANHE *heap, int N, int k)
788	{	1142	{
		1143	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
789	upheap (heap, k);	1144	upheap (heap, k);
		1145	else
790	downheap (heap, N, k);	1146	downheap (heap, N, k);
		1147	}
		1148
		1149	/* rebuild the heap: this function is used only once and executed rarely */
		1150	inline_size void
		1151	reheap (ANHE *heap, int N)
		1152	{
		1153	int i;
		1154
		1155	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1156	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1157	for (i = 0; i < N; ++i)
		1158	upheap (heap, i + HEAP0);
791	}	1159	}
792		1160
793	/*****************************************************************************/	1161	/*****************************************************************************/
794		1162
		1163	/* associate signal watchers to a signal signal */
795	typedef struct	1164	typedef struct
796	{	1165	{
		1166	EV_ATOMIC_T pending;
		1167	#if EV_MULTIPLICITY
		1168	EV_P;
		1169	#endif
797	WL head;	1170	WL head;
798	EV_ATOMIC_T gotsig;
799	} ANSIG;	1171	} ANSIG;
800		1172
801	static ANSIG *signals;	1173	static ANSIG signals [EV_NSIG - 1];
802	static int signalmax;
803
804	static EV_ATOMIC_T gotsig;
805
806	void inline_size
807	signals_init (ANSIG *base, int count)
808	{
809	while (count--)
810	{
811	base->head = 0;
812	base->gotsig = 0;
813
814	++base;
815	}
816	}
817		1174
818	/*****************************************************************************/	1175	/*****************************************************************************/
819		1176
820	void inline_speed	1177	/* used to prepare libev internal fd's */
		1178	/* this is not fork-safe */
		1179	inline_speed void
821	fd_intern (int fd)	1180	fd_intern (int fd)
822	{	1181	{
823	#ifdef _WIN32	1182	#ifdef _WIN32
824	int arg = 1;	1183	unsigned long arg = 1;
825	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1184	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
826	#else	1185	#else
827	fcntl (fd, F_SETFD, FD_CLOEXEC);	1186	fcntl (fd, F_SETFD, FD_CLOEXEC);
828	fcntl (fd, F_SETFL, O_NONBLOCK);	1187	fcntl (fd, F_SETFL, O_NONBLOCK);
829	#endif	1188	#endif
830	}	1189	}
831		1190
832	static void noinline	1191	static void noinline
833	evpipe_init (EV_P)	1192	evpipe_init (EV_P)
834	{	1193	{
835	if (!ev_is_active (&pipeev))	1194	if (!ev_is_active (&pipe_w))
836	{	1195	{
837	#if EV_USE_EVENTFD	1196	#if EV_USE_EVENTFD
		1197	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1198	if (evfd < 0 && errno == EINVAL)
838	if ((evfd = eventfd (0, 0)) >= 0)	1199	evfd = eventfd (0, 0);
		1200
		1201	if (evfd >= 0)
839	{	1202	{
840	evpipe [0] = -1;	1203	evpipe [0] = -1;
841	fd_intern (evfd);	1204	fd_intern (evfd); /* doing it twice doesn't hurt */
842	ev_io_set (&pipeev, evfd, EV_READ);	1205	ev_io_set (&pipe_w, evfd, EV_READ);
843	}	1206	}
844	else	1207	else
845	#endif	1208	#endif
846	{	1209	{
847	while (pipe (evpipe))	1210	while (pipe (evpipe))
848	syserr ("(libev) error creating signal/async pipe");	1211	ev_syserr ("(libev) error creating signal/async pipe");
849		1212
850	fd_intern (evpipe [0]);	1213	fd_intern (evpipe [0]);
851	fd_intern (evpipe [1]);	1214	fd_intern (evpipe [1]);
852	ev_io_set (&pipeev, evpipe [0], EV_READ);	1215	ev_io_set (&pipe_w, evpipe [0], EV_READ);
853	}	1216	}
854		1217
855	ev_io_start (EV_A_ &pipeev);	1218	ev_io_start (EV_A_ &pipe_w);
856	ev_unref (EV_A); /* watcher should not keep loop alive */	1219	ev_unref (EV_A); /* watcher should not keep loop alive */
857	}	1220	}
858	}	1221	}
859		1222
860	void inline_size	1223	inline_size void
861	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1224	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
862	{	1225	{
863	if (!*flag)	1226	if (!*flag)
864	{	1227	{
865	int old_errno = errno; /* save errno because write might clobber it */	1228	int old_errno = errno; /* save errno because write might clobber it */
…		…
878		1241
879	errno = old_errno;	1242	errno = old_errno;
880	}	1243	}
881	}	1244	}
882		1245
		1246	/* called whenever the libev signal pipe */
		1247	/* got some events (signal, async) */
883	static void	1248	static void
884	pipecb (EV_P_ ev_io *iow, int revents)	1249	pipecb (EV_P_ ev_io *iow, int revents)
885	{	1250	{
		1251	int i;
		1252
886	#if EV_USE_EVENTFD	1253	#if EV_USE_EVENTFD
887	if (evfd >= 0)	1254	if (evfd >= 0)
888	{	1255	{
889	uint64_t counter = 1;	1256	uint64_t counter;
890	read (evfd, &counter, sizeof (uint64_t));	1257	read (evfd, &counter, sizeof (uint64_t));
891	}	1258	}
892	else	1259	else
893	#endif	1260	#endif
894	{	1261	{
895	char dummy;	1262	char dummy;
896	read (evpipe [0], &dummy, 1);	1263	read (evpipe [0], &dummy, 1);
897	}	1264	}
898		1265
899	if (gotsig && ev_is_default_loop (EV_A))	1266	if (sig_pending)
900	{	1267	{
901	int signum;	1268	sig_pending = 0;
902	gotsig = 0;
903		1269
904	for (signum = signalmax; signum--; )	1270	for (i = EV_NSIG - 1; i--; )
905	if (signals [signum].gotsig)	1271	if (expect_false (signals [i].pending))
906	ev_feed_signal_event (EV_A_ signum + 1);	1272	ev_feed_signal_event (EV_A_ i + 1);
907	}	1273	}
908		1274
909	#if EV_ASYNC_ENABLE	1275	#if EV_ASYNC_ENABLE
910	if (gotasync)	1276	if (async_pending)
911	{	1277	{
912	int i;	1278	async_pending = 0;
913	gotasync = 0;
914		1279
915	for (i = asynccnt; i--; )	1280	for (i = asynccnt; i--; )
916	if (asyncs [i]->sent)	1281	if (asyncs [i]->sent)
917	{	1282	{
918	asyncs [i]->sent = 0;	1283	asyncs [i]->sent = 0;
…		…
926		1291
927	static void	1292	static void
928	ev_sighandler (int signum)	1293	ev_sighandler (int signum)
929	{	1294	{
930	#if EV_MULTIPLICITY	1295	#if EV_MULTIPLICITY
931	struct ev_loop *loop = &default_loop_struct;	1296	EV_P = signals [signum - 1].loop;
932	#endif	1297	#endif
933		1298
934	#if _WIN32	1299	#if _WIN32
935	signal (signum, ev_sighandler);	1300	signal (signum, ev_sighandler);
936	#endif	1301	#endif
937		1302
938	signals [signum - 1].gotsig = 1;	1303	signals [signum - 1].pending = 1;
939	evpipe_write (EV_A_ &gotsig);	1304	evpipe_write (EV_A_ &sig_pending);
940	}	1305	}
941		1306
942	void noinline	1307	void noinline
943	ev_feed_signal_event (EV_P_ int signum)	1308	ev_feed_signal_event (EV_P_ int signum)
944	{	1309	{
945	WL w;	1310	WL w;
946		1311
		1312	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1313	return;
		1314
		1315	--signum;
		1316
947	#if EV_MULTIPLICITY	1317	#if EV_MULTIPLICITY
948	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1318	/* it is permissible to try to feed a signal to the wrong loop */
949	#endif	1319	/* or, likely more useful, feeding a signal nobody is waiting for */
950		1320
951	--signum;	1321	if (expect_false (signals [signum].loop != EV_A))
952
953	if (signum < 0 || signum >= signalmax)
954	return;	1322	return;
		1323	#endif
955		1324
956	signals [signum].gotsig = 0;	1325	signals [signum].pending = 0;
957		1326
958	for (w = signals [signum].head; w; w = w->next)	1327	for (w = signals [signum].head; w; w = w->next)
959	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1328	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
960	}	1329	}
961		1330
		1331	#if EV_USE_SIGNALFD
		1332	static void
		1333	sigfdcb (EV_P_ ev_io *iow, int revents)
		1334	{
		1335	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1336
		1337	for (;;)
		1338	{
		1339	ssize_t res = read (sigfd, si, sizeof (si));
		1340
		1341	/* not ISO-C, as res might be -1, but works with SuS */
		1342	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1343	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1344
		1345	if (res < (ssize_t)sizeof (si))
		1346	break;
		1347	}
		1348	}
		1349	#endif
		1350
962	/*****************************************************************************/	1351	/*****************************************************************************/
963		1352
964	static WL childs [EV_PID_HASHSIZE];	1353	static WL childs [EV_PID_HASHSIZE];
965		1354
966	#ifndef _WIN32	1355	#ifndef _WIN32
…		…
969		1358
970	#ifndef WIFCONTINUED	1359	#ifndef WIFCONTINUED
971	# define WIFCONTINUED(status) 0	1360	# define WIFCONTINUED(status) 0
972	#endif	1361	#endif
973		1362
974	void inline_speed	1363	/* handle a single child status event */
		1364	inline_speed void
975	child_reap (EV_P_ int chain, int pid, int status)	1365	child_reap (EV_P_ int chain, int pid, int status)
976	{	1366	{
977	ev_child *w;	1367	ev_child *w;
978	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1368	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
979		1369
…		…
992		1382
993	#ifndef WCONTINUED	1383	#ifndef WCONTINUED
994	# define WCONTINUED 0	1384	# define WCONTINUED 0
995	#endif	1385	#endif
996		1386
		1387	/* called on sigchld etc., calls waitpid */
997	static void	1388	static void
998	childcb (EV_P_ ev_signal *sw, int revents)	1389	childcb (EV_P_ ev_signal *sw, int revents)
999	{	1390	{
1000	int pid, status;	1391	int pid, status;
1001		1392
…		…
1082	/* kqueue is borked on everything but netbsd apparently */	1473	/* kqueue is borked on everything but netbsd apparently */
1083	/* it usually doesn't work correctly on anything but sockets and pipes */	1474	/* it usually doesn't work correctly on anything but sockets and pipes */
1084	flags &= ~EVBACKEND_KQUEUE;	1475	flags &= ~EVBACKEND_KQUEUE;
1085	#endif	1476	#endif
1086	#ifdef __APPLE__	1477	#ifdef __APPLE__
1087	// flags &= ~EVBACKEND_KQUEUE; for documentation	1478	/* only select works correctly on that "unix-certified" platform */
1088	flags &= ~EVBACKEND_POLL;	1479	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1480	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1089	#endif	1481	#endif
1090		1482
1091	return flags;	1483	return flags;
1092	}	1484	}
1093		1485
…		…
1107	ev_backend (EV_P)	1499	ev_backend (EV_P)
1108	{	1500	{
1109	return backend;	1501	return backend;
1110	}	1502	}
1111		1503
		1504	#if EV_MINIMAL < 2
1112	unsigned int	1505	unsigned int
1113	ev_loop_count (EV_P)	1506	ev_loop_count (EV_P)
1114	{	1507	{
1115	return loop_count;	1508	return loop_count;
1116	}	1509	}
1117		1510
		1511	unsigned int
		1512	ev_loop_depth (EV_P)
		1513	{
		1514	return loop_depth;
		1515	}
		1516
1118	void	1517	void
1119	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1518	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1120	{	1519	{
1121	io_blocktime = interval;	1520	io_blocktime = interval;
1122	}	1521	}
…		…
1125	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1524	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1126	{	1525	{
1127	timeout_blocktime = interval;	1526	timeout_blocktime = interval;
1128	}	1527	}
1129		1528
		1529	void
		1530	ev_set_userdata (EV_P_ void *data)
		1531	{
		1532	userdata = data;
		1533	}
		1534
		1535	void *
		1536	ev_userdata (EV_P)
		1537	{
		1538	return userdata;
		1539	}
		1540
		1541	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1542	{
		1543	invoke_cb = invoke_pending_cb;
		1544	}
		1545
		1546	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1547	{
		1548	release_cb = release;
		1549	acquire_cb = acquire;
		1550	}
		1551	#endif
		1552
		1553	/* initialise a loop structure, must be zero-initialised */
1130	static void noinline	1554	static void noinline
1131	loop_init (EV_P_ unsigned int flags)	1555	loop_init (EV_P_ unsigned int flags)
1132	{	1556	{
1133	if (!backend)	1557	if (!backend)
1134	{	1558	{
		1559	#if EV_USE_REALTIME
		1560	if (!have_realtime)
		1561	{
		1562	struct timespec ts;
		1563
		1564	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1565	have_realtime = 1;
		1566	}
		1567	#endif
		1568
1135	#if EV_USE_MONOTONIC	1569	#if EV_USE_MONOTONIC
		1570	if (!have_monotonic)
1136	{	1571	{
1137	struct timespec ts;	1572	struct timespec ts;
		1573
1138	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1574	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1139	have_monotonic = 1;	1575	have_monotonic = 1;
1140	}	1576	}
1141	#endif	1577	#endif
		1578
		1579	/* pid check not overridable via env */
		1580	#ifndef _WIN32
		1581	if (flags & EVFLAG_FORKCHECK)
		1582	curpid = getpid ();
		1583	#endif
		1584
		1585	if (!(flags & EVFLAG_NOENV)
		1586	&& !enable_secure ()
		1587	&& getenv ("LIBEV_FLAGS"))
		1588	flags = atoi (getenv ("LIBEV_FLAGS"));
1142		1589
1143	ev_rt_now = ev_time ();	1590	ev_rt_now = ev_time ();
1144	mn_now = get_clock ();	1591	mn_now = get_clock ();
1145	now_floor = mn_now;	1592	now_floor = mn_now;
1146	rtmn_diff = ev_rt_now - mn_now;	1593	rtmn_diff = ev_rt_now - mn_now;
		1594	#if EV_MINIMAL < 2
		1595	invoke_cb = ev_invoke_pending;
		1596	#endif
1147		1597
1148	io_blocktime = 0.;	1598	io_blocktime = 0.;
1149	timeout_blocktime = 0.;	1599	timeout_blocktime = 0.;
1150	backend = 0;	1600	backend = 0;
1151	backend_fd = -1;	1601	backend_fd = -1;
1152	gotasync = 0;	1602	sig_pending = 0;
		1603	#if EV_ASYNC_ENABLE
		1604	async_pending = 0;
		1605	#endif
1153	#if EV_USE_INOTIFY	1606	#if EV_USE_INOTIFY
1154	fs_fd = -2;	1607	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1155	#endif	1608	#endif
1156		1609	#if EV_USE_SIGNALFD
1157	/* pid check not overridable via env */	1610	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1158	#ifndef _WIN32
1159	if (flags & EVFLAG_FORKCHECK)
1160	curpid = getpid ();
1161	#endif	1611	#endif
1162		1612
1163	if (!(flags & EVFLAG_NOENV)
1164	&& !enable_secure ()
1165	&& getenv ("LIBEV_FLAGS"))
1166	flags = atoi (getenv ("LIBEV_FLAGS"));
1167
1168	if (!(flags & 0x0000ffffUL))	1613	if (!(flags & 0x0000ffffU))
1169	flags |= ev_recommended_backends ();	1614	flags |= ev_recommended_backends ();
1170		1615
1171	#if EV_USE_PORT	1616	#if EV_USE_PORT
1172	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1617	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1173	#endif	1618	#endif
…		…
1182	#endif	1627	#endif
1183	#if EV_USE_SELECT	1628	#if EV_USE_SELECT
1184	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1629	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1185	#endif	1630	#endif
1186		1631
		1632	ev_prepare_init (&pending_w, pendingcb);
		1633
1187	ev_init (&pipeev, pipecb);	1634	ev_init (&pipe_w, pipecb);
1188	ev_set_priority (&pipeev, EV_MAXPRI);	1635	ev_set_priority (&pipe_w, EV_MAXPRI);
1189	}	1636	}
1190	}	1637	}
1191		1638
		1639	/* free up a loop structure */
1192	static void noinline	1640	static void noinline
1193	loop_destroy (EV_P)	1641	loop_destroy (EV_P)
1194	{	1642	{
1195	int i;	1643	int i;
1196		1644
1197	if (ev_is_active (&pipeev))	1645	if (ev_is_active (&pipe_w))
1198	{	1646	{
1199	ev_ref (EV_A); /* signal watcher */	1647	/*ev_ref (EV_A);*/
1200	ev_io_stop (EV_A_ &pipeev);	1648	/*ev_io_stop (EV_A_ &pipe_w);*/
1201		1649
1202	#if EV_USE_EVENTFD	1650	#if EV_USE_EVENTFD
1203	if (evfd >= 0)	1651	if (evfd >= 0)
1204	close (evfd);	1652	close (evfd);
1205	#endif	1653	#endif
1206		1654
1207	if (evpipe [0] >= 0)	1655	if (evpipe [0] >= 0)
1208	{	1656	{
1209	close (evpipe [0]);	1657	EV_WIN32_CLOSE_FD (evpipe [0]);
1210	close (evpipe [1]);	1658	EV_WIN32_CLOSE_FD (evpipe [1]);
1211	}	1659	}
1212	}	1660	}
		1661
		1662	#if EV_USE_SIGNALFD
		1663	if (ev_is_active (&sigfd_w))
		1664	close (sigfd);
		1665	#endif
1213		1666
1214	#if EV_USE_INOTIFY	1667	#if EV_USE_INOTIFY
1215	if (fs_fd >= 0)	1668	if (fs_fd >= 0)
1216	close (fs_fd);	1669	close (fs_fd);
1217	#endif	1670	#endif
…		…
1241	#if EV_IDLE_ENABLE	1694	#if EV_IDLE_ENABLE
1242	array_free (idle, [i]);	1695	array_free (idle, [i]);
1243	#endif	1696	#endif
1244	}	1697	}
1245		1698
1246	ev_free (anfds); anfdmax = 0;	1699	ev_free (anfds); anfds = 0; anfdmax = 0;
1247		1700
1248	/* have to use the microsoft-never-gets-it-right macro */	1701	/* have to use the microsoft-never-gets-it-right macro */
		1702	array_free (rfeed, EMPTY);
1249	array_free (fdchange, EMPTY);	1703	array_free (fdchange, EMPTY);
1250	array_free (timer, EMPTY);	1704	array_free (timer, EMPTY);
1251	#if EV_PERIODIC_ENABLE	1705	#if EV_PERIODIC_ENABLE
1252	array_free (periodic, EMPTY);	1706	array_free (periodic, EMPTY);
1253	#endif	1707	#endif
…		…
1261	#endif	1715	#endif
1262		1716
1263	backend = 0;	1717	backend = 0;
1264	}	1718	}
1265		1719
		1720	#if EV_USE_INOTIFY
1266	void inline_size infy_fork (EV_P);	1721	inline_size void infy_fork (EV_P);
		1722	#endif
1267		1723
1268	void inline_size	1724	inline_size void
1269	loop_fork (EV_P)	1725	loop_fork (EV_P)
1270	{	1726	{
1271	#if EV_USE_PORT	1727	#if EV_USE_PORT
1272	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1728	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1273	#endif	1729	#endif
…		…
1279	#endif	1735	#endif
1280	#if EV_USE_INOTIFY	1736	#if EV_USE_INOTIFY
1281	infy_fork (EV_A);	1737	infy_fork (EV_A);
1282	#endif	1738	#endif
1283		1739
1284	if (ev_is_active (&pipeev))	1740	if (ev_is_active (&pipe_w))
1285	{	1741	{
1286	/* this "locks" the handlers against writing to the pipe */	1742	/* this "locks" the handlers against writing to the pipe */
1287	/* while we modify the fd vars */	1743	/* while we modify the fd vars */
1288	gotsig = 1;	1744	sig_pending = 1;
1289	#if EV_ASYNC_ENABLE	1745	#if EV_ASYNC_ENABLE
1290	gotasync = 1;	1746	async_pending = 1;
1291	#endif	1747	#endif
1292		1748
1293	ev_ref (EV_A);	1749	ev_ref (EV_A);
1294	ev_io_stop (EV_A_ &pipeev);	1750	ev_io_stop (EV_A_ &pipe_w);
1295		1751
1296	#if EV_USE_EVENTFD	1752	#if EV_USE_EVENTFD
1297	if (evfd >= 0)	1753	if (evfd >= 0)
1298	close (evfd);	1754	close (evfd);
1299	#endif	1755	#endif
1300		1756
1301	if (evpipe [0] >= 0)	1757	if (evpipe [0] >= 0)
1302	{	1758	{
1303	close (evpipe [0]);	1759	EV_WIN32_CLOSE_FD (evpipe [0]);
1304	close (evpipe [1]);	1760	EV_WIN32_CLOSE_FD (evpipe [1]);
1305	}	1761	}
1306		1762
1307	evpipe_init (EV_A);	1763	evpipe_init (EV_A);
1308	/* now iterate over everything, in case we missed something */	1764	/* now iterate over everything, in case we missed something */
1309	pipecb (EV_A_ &pipeev, EV_READ);	1765	pipecb (EV_A_ &pipe_w, EV_READ);
1310	}	1766	}
1311		1767
1312	postfork = 0;	1768	postfork = 0;
1313	}	1769	}
1314		1770
1315	#if EV_MULTIPLICITY	1771	#if EV_MULTIPLICITY
		1772
1316	struct ev_loop *	1773	struct ev_loop *
1317	ev_loop_new (unsigned int flags)	1774	ev_loop_new (unsigned int flags)
1318	{	1775	{
1319	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1776	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1320		1777
1321	memset (loop, 0, sizeof (struct ev_loop));	1778	memset (EV_A, 0, sizeof (struct ev_loop));
1322
1323	loop_init (EV_A_ flags);	1779	loop_init (EV_A_ flags);
1324		1780
1325	if (ev_backend (EV_A))	1781	if (ev_backend (EV_A))
1326	return loop;	1782	return EV_A;
1327		1783
1328	return 0;	1784	return 0;
1329	}	1785	}
1330		1786
1331	void	1787	void
…		…
1338	void	1794	void
1339	ev_loop_fork (EV_P)	1795	ev_loop_fork (EV_P)
1340	{	1796	{
1341	postfork = 1; /* must be in line with ev_default_fork */	1797	postfork = 1; /* must be in line with ev_default_fork */
1342	}	1798	}
		1799	#endif /* multiplicity */
1343		1800
		1801	#if EV_VERIFY
		1802	static void noinline
		1803	verify_watcher (EV_P_ W w)
		1804	{
		1805	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1806
		1807	if (w->pending)
		1808	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1809	}
		1810
		1811	static void noinline
		1812	verify_heap (EV_P_ ANHE *heap, int N)
		1813	{
		1814	int i;
		1815
		1816	for (i = HEAP0; i < N + HEAP0; ++i)
		1817	{
		1818	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1819	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1820	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1821
		1822	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1823	}
		1824	}
		1825
		1826	static void noinline
		1827	array_verify (EV_P_ W *ws, int cnt)
		1828	{
		1829	while (cnt--)
		1830	{
		1831	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1832	verify_watcher (EV_A_ ws [cnt]);
		1833	}
		1834	}
		1835	#endif
		1836
		1837	#if EV_MINIMAL < 2
		1838	void
		1839	ev_loop_verify (EV_P)
		1840	{
		1841	#if EV_VERIFY
		1842	int i;
		1843	WL w;
		1844
		1845	assert (activecnt >= -1);
		1846
		1847	assert (fdchangemax >= fdchangecnt);
		1848	for (i = 0; i < fdchangecnt; ++i)
		1849	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1850
		1851	assert (anfdmax >= 0);
		1852	for (i = 0; i < anfdmax; ++i)
		1853	for (w = anfds [i].head; w; w = w->next)
		1854	{
		1855	verify_watcher (EV_A_ (W)w);
		1856	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1857	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1858	}
		1859
		1860	assert (timermax >= timercnt);
		1861	verify_heap (EV_A_ timers, timercnt);
		1862
		1863	#if EV_PERIODIC_ENABLE
		1864	assert (periodicmax >= periodiccnt);
		1865	verify_heap (EV_A_ periodics, periodiccnt);
		1866	#endif
		1867
		1868	for (i = NUMPRI; i--; )
		1869	{
		1870	assert (pendingmax [i] >= pendingcnt [i]);
		1871	#if EV_IDLE_ENABLE
		1872	assert (idleall >= 0);
		1873	assert (idlemax [i] >= idlecnt [i]);
		1874	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1875	#endif
		1876	}
		1877
		1878	#if EV_FORK_ENABLE
		1879	assert (forkmax >= forkcnt);
		1880	array_verify (EV_A_ (W *)forks, forkcnt);
		1881	#endif
		1882
		1883	#if EV_ASYNC_ENABLE
		1884	assert (asyncmax >= asynccnt);
		1885	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1886	#endif
		1887
		1888	assert (preparemax >= preparecnt);
		1889	array_verify (EV_A_ (W *)prepares, preparecnt);
		1890
		1891	assert (checkmax >= checkcnt);
		1892	array_verify (EV_A_ (W *)checks, checkcnt);
		1893
		1894	# if 0
		1895	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1896	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		1897	# endif
		1898	#endif
		1899	}
1344	#endif	1900	#endif
1345		1901
1346	#if EV_MULTIPLICITY	1902	#if EV_MULTIPLICITY
1347	struct ev_loop *	1903	struct ev_loop *
1348	ev_default_loop_init (unsigned int flags)	1904	ev_default_loop_init (unsigned int flags)
…		…
1352	#endif	1908	#endif
1353	{	1909	{
1354	if (!ev_default_loop_ptr)	1910	if (!ev_default_loop_ptr)
1355	{	1911	{
1356	#if EV_MULTIPLICITY	1912	#if EV_MULTIPLICITY
1357	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1913	EV_P = ev_default_loop_ptr = &default_loop_struct;
1358	#else	1914	#else
1359	ev_default_loop_ptr = 1;	1915	ev_default_loop_ptr = 1;
1360	#endif	1916	#endif
1361		1917
1362	loop_init (EV_A_ flags);	1918	loop_init (EV_A_ flags);
…		…
1379		1935
1380	void	1936	void
1381	ev_default_destroy (void)	1937	ev_default_destroy (void)
1382	{	1938	{
1383	#if EV_MULTIPLICITY	1939	#if EV_MULTIPLICITY
1384	struct ev_loop *loop = ev_default_loop_ptr;	1940	EV_P = ev_default_loop_ptr;
1385	#endif	1941	#endif
		1942
		1943	ev_default_loop_ptr = 0;
1386		1944
1387	#ifndef _WIN32	1945	#ifndef _WIN32
1388	ev_ref (EV_A); /* child watcher */	1946	ev_ref (EV_A); /* child watcher */
1389	ev_signal_stop (EV_A_ &childev);	1947	ev_signal_stop (EV_A_ &childev);
1390	#endif	1948	#endif
…		…
1394		1952
1395	void	1953	void
1396	ev_default_fork (void)	1954	ev_default_fork (void)
1397	{	1955	{
1398	#if EV_MULTIPLICITY	1956	#if EV_MULTIPLICITY
1399	struct ev_loop *loop = ev_default_loop_ptr;	1957	EV_P = ev_default_loop_ptr;
1400	#endif	1958	#endif
1401		1959
1402	if (backend)
1403	postfork = 1; /* must be in line with ev_loop_fork */	1960	postfork = 1; /* must be in line with ev_loop_fork */
1404	}	1961	}
1405		1962
1406	/*****************************************************************************/	1963	/*****************************************************************************/
1407		1964
1408	void	1965	void
1409	ev_invoke (EV_P_ void *w, int revents)	1966	ev_invoke (EV_P_ void *w, int revents)
1410	{	1967	{
1411	EV_CB_INVOKE ((W)w, revents);	1968	EV_CB_INVOKE ((W)w, revents);
1412	}	1969	}
1413		1970
1414	void inline_speed	1971	unsigned int
1415	call_pending (EV_P)	1972	ev_pending_count (EV_P)
		1973	{
		1974	int pri;
		1975	unsigned int count = 0;
		1976
		1977	for (pri = NUMPRI; pri--; )
		1978	count += pendingcnt [pri];
		1979
		1980	return count;
		1981	}
		1982
		1983	void noinline
		1984	ev_invoke_pending (EV_P)
1416	{	1985	{
1417	int pri;	1986	int pri;
1418		1987
1419	for (pri = NUMPRI; pri--; )	1988	for (pri = NUMPRI; pri--; )
1420	while (pendingcnt [pri])	1989	while (pendingcnt [pri])
1421	{	1990	{
1422	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1991	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1423		1992
1424	if (expect_true (p->w))
1425	{
1426	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1993	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1994	/* ^ this is no longer true, as pending_w could be here */
1427		1995
1428	p->w->pending = 0;	1996	p->w->pending = 0;
1429	EV_CB_INVOKE (p->w, p->events);	1997	EV_CB_INVOKE (p->w, p->events);
1430	}	1998	EV_FREQUENT_CHECK;
1431	}	1999	}
1432	}	2000	}
1433		2001
1434	void inline_size
1435	timers_reify (EV_P)
1436	{
1437	while (timercnt && ((WT)timers [0])->at <= mn_now)
1438	{
1439	ev_timer *w = (ev_timer *)timers [0];
1440
1441	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1442
1443	/* first reschedule or stop timer */
1444	if (w->repeat)
1445	{
1446	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1447
1448	((WT)w)->at += w->repeat;
1449	if (((WT)w)->at < mn_now)
1450	((WT)w)->at = mn_now;
1451
1452	downheap (timers, timercnt, 0);
1453	}
1454	else
1455	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1456
1457	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1458	}
1459	}
1460
1461	#if EV_PERIODIC_ENABLE
1462	void inline_size
1463	periodics_reify (EV_P)
1464	{
1465	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1466	{
1467	ev_periodic *w = (ev_periodic *)periodics [0];
1468
1469	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1470
1471	/* first reschedule or stop timer */
1472	if (w->reschedule_cb)
1473	{
1474	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1475	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1476	downheap (periodics, periodiccnt, 0);
1477	}
1478	else if (w->interval)
1479	{
1480	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1481	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1482	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1483	downheap (periodics, periodiccnt, 0);
1484	}
1485	else
1486	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1487
1488	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1489	}
1490	}
1491
1492	static void noinline
1493	periodics_reschedule (EV_P)
1494	{
1495	int i;
1496
1497	/* adjust periodics after time jump */
1498	for (i = 0; i < periodiccnt; ++i)
1499	{
1500	ev_periodic *w = (ev_periodic *)periodics [i];
1501
1502	if (w->reschedule_cb)
1503	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1504	else if (w->interval)
1505	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1506	}
1507
1508	/* now rebuild the heap */
1509	for (i = periodiccnt >> 1; i--; )
1510	downheap (periodics, periodiccnt, i);
1511	}
1512	#endif
1513
1514	#if EV_IDLE_ENABLE	2002	#if EV_IDLE_ENABLE
1515	void inline_size	2003	/* make idle watchers pending. this handles the "call-idle */
		2004	/* only when higher priorities are idle" logic */
		2005	inline_size void
1516	idle_reify (EV_P)	2006	idle_reify (EV_P)
1517	{	2007	{
1518	if (expect_false (idleall))	2008	if (expect_false (idleall))
1519	{	2009	{
1520	int pri;	2010	int pri;
…		…
1532	}	2022	}
1533	}	2023	}
1534	}	2024	}
1535	#endif	2025	#endif
1536		2026
1537	void inline_speed	2027	/* make timers pending */
		2028	inline_size void
		2029	timers_reify (EV_P)
		2030	{
		2031	EV_FREQUENT_CHECK;
		2032
		2033	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		2034	{
		2035	do
		2036	{
		2037	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2038
		2039	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2040
		2041	/* first reschedule or stop timer */
		2042	if (w->repeat)
		2043	{
		2044	ev_at (w) += w->repeat;
		2045	if (ev_at (w) < mn_now)
		2046	ev_at (w) = mn_now;
		2047
		2048	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		2049
		2050	ANHE_at_cache (timers [HEAP0]);
		2051	downheap (timers, timercnt, HEAP0);
		2052	}
		2053	else
		2054	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2055
		2056	EV_FREQUENT_CHECK;
		2057	feed_reverse (EV_A_ (W)w);
		2058	}
		2059	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
		2060
		2061	feed_reverse_done (EV_A_ EV_TIMEOUT);
		2062	}
		2063	}
		2064
		2065	#if EV_PERIODIC_ENABLE
		2066	/* make periodics pending */
		2067	inline_size void
		2068	periodics_reify (EV_P)
		2069	{
		2070	EV_FREQUENT_CHECK;
		2071
		2072	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		2073	{
		2074	int feed_count = 0;
		2075
		2076	do
		2077	{
		2078	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2079
		2080	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2081
		2082	/* first reschedule or stop timer */
		2083	if (w->reschedule_cb)
		2084	{
		2085	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2086
		2087	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		2088
		2089	ANHE_at_cache (periodics [HEAP0]);
		2090	downheap (periodics, periodiccnt, HEAP0);
		2091	}
		2092	else if (w->interval)
		2093	{
		2094	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2095	/* if next trigger time is not sufficiently in the future, put it there */
		2096	/* this might happen because of floating point inexactness */
		2097	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2098	{
		2099	ev_at (w) += w->interval;
		2100
		2101	/* if interval is unreasonably low we might still have a time in the past */
		2102	/* so correct this. this will make the periodic very inexact, but the user */
		2103	/* has effectively asked to get triggered more often than possible */
		2104	if (ev_at (w) < ev_rt_now)
		2105	ev_at (w) = ev_rt_now;
		2106	}
		2107
		2108	ANHE_at_cache (periodics [HEAP0]);
		2109	downheap (periodics, periodiccnt, HEAP0);
		2110	}
		2111	else
		2112	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2113
		2114	EV_FREQUENT_CHECK;
		2115	feed_reverse (EV_A_ (W)w);
		2116	}
		2117	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
		2118
		2119	feed_reverse_done (EV_A_ EV_PERIODIC);
		2120	}
		2121	}
		2122
		2123	/* simply recalculate all periodics */
		2124	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
		2125	static void noinline
		2126	periodics_reschedule (EV_P)
		2127	{
		2128	int i;
		2129
		2130	/* adjust periodics after time jump */
		2131	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		2132	{
		2133	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		2134
		2135	if (w->reschedule_cb)
		2136	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2137	else if (w->interval)
		2138	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2139
		2140	ANHE_at_cache (periodics [i]);
		2141	}
		2142
		2143	reheap (periodics, periodiccnt);
		2144	}
		2145	#endif
		2146
		2147	/* adjust all timers by a given offset */
		2148	static void noinline
		2149	timers_reschedule (EV_P_ ev_tstamp adjust)
		2150	{
		2151	int i;
		2152
		2153	for (i = 0; i < timercnt; ++i)
		2154	{
		2155	ANHE *he = timers + i + HEAP0;
		2156	ANHE_w (*he)->at += adjust;
		2157	ANHE_at_cache (*he);
		2158	}
		2159	}
		2160
		2161	/* fetch new monotonic and realtime times from the kernel */
		2162	/* also detetc if there was a timejump, and act accordingly */
		2163	inline_speed void
1538	time_update (EV_P_ ev_tstamp max_block)	2164	time_update (EV_P_ ev_tstamp max_block)
1539	{	2165	{
1540	int i;
1541
1542	#if EV_USE_MONOTONIC	2166	#if EV_USE_MONOTONIC
1543	if (expect_true (have_monotonic))	2167	if (expect_true (have_monotonic))
1544	{	2168	{
		2169	int i;
1545	ev_tstamp odiff = rtmn_diff;	2170	ev_tstamp odiff = rtmn_diff;
1546		2171
1547	mn_now = get_clock ();	2172	mn_now = get_clock ();
1548		2173
1549	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2174	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1567	*/	2192	*/
1568	for (i = 4; --i; )	2193	for (i = 4; --i; )
1569	{	2194	{
1570	rtmn_diff = ev_rt_now - mn_now;	2195	rtmn_diff = ev_rt_now - mn_now;
1571		2196
1572	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	2197	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1573	return; /* all is well */	2198	return; /* all is well */
1574		2199
1575	ev_rt_now = ev_time ();	2200	ev_rt_now = ev_time ();
1576	mn_now = get_clock ();	2201	mn_now = get_clock ();
1577	now_floor = mn_now;	2202	now_floor = mn_now;
1578	}	2203	}
1579		2204
		2205	/* no timer adjustment, as the monotonic clock doesn't jump */
		2206	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1580	# if EV_PERIODIC_ENABLE	2207	# if EV_PERIODIC_ENABLE
1581	periodics_reschedule (EV_A);	2208	periodics_reschedule (EV_A);
1582	# endif	2209	# endif
1583	/* no timer adjustment, as the monotonic clock doesn't jump */
1584	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1585	}	2210	}
1586	else	2211	else
1587	#endif	2212	#endif
1588	{	2213	{
1589	ev_rt_now = ev_time ();	2214	ev_rt_now = ev_time ();
1590		2215
1591	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2216	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1592	{	2217	{
		2218	/* adjust timers. this is easy, as the offset is the same for all of them */
		2219	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1593	#if EV_PERIODIC_ENABLE	2220	#if EV_PERIODIC_ENABLE
1594	periodics_reschedule (EV_A);	2221	periodics_reschedule (EV_A);
1595	#endif	2222	#endif
1596	/* adjust timers. this is easy, as the offset is the same for all of them */
1597	for (i = 0; i < timercnt; ++i)
1598	((WT)timers [i])->at += ev_rt_now - mn_now;
1599	}	2223	}
1600		2224
1601	mn_now = ev_rt_now;	2225	mn_now = ev_rt_now;
1602	}	2226	}
1603	}	2227	}
1604		2228
1605	void	2229	void
1606	ev_ref (EV_P)
1607	{
1608	++activecnt;
1609	}
1610
1611	void
1612	ev_unref (EV_P)
1613	{
1614	--activecnt;
1615	}
1616
1617	static int loop_done;
1618
1619	void
1620	ev_loop (EV_P_ int flags)	2230	ev_loop (EV_P_ int flags)
1621	{	2231	{
		2232	#if EV_MINIMAL < 2
		2233	++loop_depth;
		2234	#endif
		2235
		2236	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2237
1622	loop_done = EVUNLOOP_CANCEL;	2238	loop_done = EVUNLOOP_CANCEL;
1623		2239
1624	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2240	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1625		2241
1626	do	2242	do
1627	{	2243	{
		2244	#if EV_VERIFY >= 2
		2245	ev_loop_verify (EV_A);
		2246	#endif
		2247
1628	#ifndef _WIN32	2248	#ifndef _WIN32
1629	if (expect_false (curpid)) /* penalise the forking check even more */	2249	if (expect_false (curpid)) /* penalise the forking check even more */
1630	if (expect_false (getpid () != curpid))	2250	if (expect_false (getpid () != curpid))
1631	{	2251	{
1632	curpid = getpid ();	2252	curpid = getpid ();
…		…
1638	/* we might have forked, so queue fork handlers */	2258	/* we might have forked, so queue fork handlers */
1639	if (expect_false (postfork))	2259	if (expect_false (postfork))
1640	if (forkcnt)	2260	if (forkcnt)
1641	{	2261	{
1642	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2262	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1643	call_pending (EV_A);	2263	EV_INVOKE_PENDING;
1644	}	2264	}
1645	#endif	2265	#endif
1646		2266
1647	/* queue prepare watchers (and execute them) */	2267	/* queue prepare watchers (and execute them) */
1648	if (expect_false (preparecnt))	2268	if (expect_false (preparecnt))
1649	{	2269	{
1650	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2270	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1651	call_pending (EV_A);	2271	EV_INVOKE_PENDING;
1652	}	2272	}
1653		2273
1654	if (expect_false (!activecnt))	2274	if (expect_false (loop_done))
1655	break;	2275	break;
1656		2276
1657	/* we might have forked, so reify kernel state if necessary */	2277	/* we might have forked, so reify kernel state if necessary */
1658	if (expect_false (postfork))	2278	if (expect_false (postfork))
1659	loop_fork (EV_A);	2279	loop_fork (EV_A);
…		…
1666	ev_tstamp waittime = 0.;	2286	ev_tstamp waittime = 0.;
1667	ev_tstamp sleeptime = 0.;	2287	ev_tstamp sleeptime = 0.;
1668		2288
1669	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2289	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1670	{	2290	{
		2291	/* remember old timestamp for io_blocktime calculation */
		2292	ev_tstamp prev_mn_now = mn_now;
		2293
1671	/* update time to cancel out callback processing overhead */	2294	/* update time to cancel out callback processing overhead */
1672	time_update (EV_A_ 1e100);	2295	time_update (EV_A_ 1e100);
1673		2296
1674	waittime = MAX_BLOCKTIME;	2297	waittime = MAX_BLOCKTIME;
1675		2298
1676	if (timercnt)	2299	if (timercnt)
1677	{	2300	{
1678	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	2301	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1679	if (waittime > to) waittime = to;	2302	if (waittime > to) waittime = to;
1680	}	2303	}
1681		2304
1682	#if EV_PERIODIC_ENABLE	2305	#if EV_PERIODIC_ENABLE
1683	if (periodiccnt)	2306	if (periodiccnt)
1684	{	2307	{
1685	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	2308	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1686	if (waittime > to) waittime = to;	2309	if (waittime > to) waittime = to;
1687	}	2310	}
1688	#endif	2311	#endif
1689		2312
		2313	/* don't let timeouts decrease the waittime below timeout_blocktime */
1690	if (expect_false (waittime < timeout_blocktime))	2314	if (expect_false (waittime < timeout_blocktime))
1691	waittime = timeout_blocktime;	2315	waittime = timeout_blocktime;
1692		2316
1693	sleeptime = waittime - backend_fudge;	2317	/* extra check because io_blocktime is commonly 0 */
1694
1695	if (expect_true (sleeptime > io_blocktime))	2318	if (expect_false (io_blocktime))
1696	sleeptime = io_blocktime;
1697
1698	if (sleeptime)
1699	{	2319	{
		2320	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2321
		2322	if (sleeptime > waittime - backend_fudge)
		2323	sleeptime = waittime - backend_fudge;
		2324
		2325	if (expect_true (sleeptime > 0.))
		2326	{
1700	ev_sleep (sleeptime);	2327	ev_sleep (sleeptime);
1701	waittime -= sleeptime;	2328	waittime -= sleeptime;
		2329	}
1702	}	2330	}
1703	}	2331	}
1704		2332
		2333	#if EV_MINIMAL < 2
1705	++loop_count;	2334	++loop_count;
		2335	#endif
		2336	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1706	backend_poll (EV_A_ waittime);	2337	backend_poll (EV_A_ waittime);
		2338	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1707		2339
1708	/* update ev_rt_now, do magic */	2340	/* update ev_rt_now, do magic */
1709	time_update (EV_A_ waittime + sleeptime);	2341	time_update (EV_A_ waittime + sleeptime);
1710	}	2342	}
1711		2343
…		…
1722		2354
1723	/* queue check watchers, to be executed first */	2355	/* queue check watchers, to be executed first */
1724	if (expect_false (checkcnt))	2356	if (expect_false (checkcnt))
1725	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2357	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1726		2358
1727	call_pending (EV_A);	2359	EV_INVOKE_PENDING;
1728	}	2360	}
1729	while (expect_true (	2361	while (expect_true (
1730	activecnt	2362	activecnt
1731	&& !loop_done	2363	&& !loop_done
1732	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2364	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1733	));	2365	));
1734		2366
1735	if (loop_done == EVUNLOOP_ONE)	2367	if (loop_done == EVUNLOOP_ONE)
1736	loop_done = EVUNLOOP_CANCEL;	2368	loop_done = EVUNLOOP_CANCEL;
		2369
		2370	#if EV_MINIMAL < 2
		2371	--loop_depth;
		2372	#endif
1737	}	2373	}
1738		2374
1739	void	2375	void
1740	ev_unloop (EV_P_ int how)	2376	ev_unloop (EV_P_ int how)
1741	{	2377	{
1742	loop_done = how;	2378	loop_done = how;
1743	}	2379	}
1744		2380
		2381	void
		2382	ev_ref (EV_P)
		2383	{
		2384	++activecnt;
		2385	}
		2386
		2387	void
		2388	ev_unref (EV_P)
		2389	{
		2390	--activecnt;
		2391	}
		2392
		2393	void
		2394	ev_now_update (EV_P)
		2395	{
		2396	time_update (EV_A_ 1e100);
		2397	}
		2398
		2399	void
		2400	ev_suspend (EV_P)
		2401	{
		2402	ev_now_update (EV_A);
		2403	}
		2404
		2405	void
		2406	ev_resume (EV_P)
		2407	{
		2408	ev_tstamp mn_prev = mn_now;
		2409
		2410	ev_now_update (EV_A);
		2411	timers_reschedule (EV_A_ mn_now - mn_prev);
		2412	#if EV_PERIODIC_ENABLE
		2413	/* TODO: really do this? */
		2414	periodics_reschedule (EV_A);
		2415	#endif
		2416	}
		2417
1745	/*****************************************************************************/	2418	/*****************************************************************************/
		2419	/* singly-linked list management, used when the expected list length is short */
1746		2420
1747	void inline_size	2421	inline_size void
1748	wlist_add (WL *head, WL elem)	2422	wlist_add (WL *head, WL elem)
1749	{	2423	{
1750	elem->next = *head;	2424	elem->next = *head;
1751	*head = elem;	2425	*head = elem;
1752	}	2426	}
1753		2427
1754	void inline_size	2428	inline_size void
1755	wlist_del (WL *head, WL elem)	2429	wlist_del (WL *head, WL elem)
1756	{	2430	{
1757	while (*head)	2431	while (*head)
1758	{	2432	{
1759	if (*head == elem)	2433	if (expect_true (*head == elem))
1760	{	2434	{
1761	*head = elem->next;	2435	*head = elem->next;
1762	return;	2436	break;
1763	}	2437	}
1764		2438
1765	head = &(*head)->next;	2439	head = &(*head)->next;
1766	}	2440	}
1767	}	2441	}
1768		2442
1769	void inline_speed	2443	/* internal, faster, version of ev_clear_pending */
		2444	inline_speed void
1770	clear_pending (EV_P_ W w)	2445	clear_pending (EV_P_ W w)
1771	{	2446	{
1772	if (w->pending)	2447	if (w->pending)
1773	{	2448	{
1774	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2449	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1775	w->pending = 0;	2450	w->pending = 0;
1776	}	2451	}
1777	}	2452	}
1778		2453
1779	int	2454	int
…		…
1783	int pending = w_->pending;	2458	int pending = w_->pending;
1784		2459
1785	if (expect_true (pending))	2460	if (expect_true (pending))
1786	{	2461	{
1787	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2462	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2463	p->w = (W)&pending_w;
1788	w_->pending = 0;	2464	w_->pending = 0;
1789	p->w = 0;
1790	return p->events;	2465	return p->events;
1791	}	2466	}
1792	else	2467	else
1793	return 0;	2468	return 0;
1794	}	2469	}
1795		2470
1796	void inline_size	2471	inline_size void
1797	pri_adjust (EV_P_ W w)	2472	pri_adjust (EV_P_ W w)
1798	{	2473	{
1799	int pri = w->priority;	2474	int pri = ev_priority (w);
1800	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2475	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1801	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2476	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1802	w->priority = pri;	2477	ev_set_priority (w, pri);
1803	}	2478	}
1804		2479
1805	void inline_speed	2480	inline_speed void
1806	ev_start (EV_P_ W w, int active)	2481	ev_start (EV_P_ W w, int active)
1807	{	2482	{
1808	pri_adjust (EV_A_ w);	2483	pri_adjust (EV_A_ w);
1809	w->active = active;	2484	w->active = active;
1810	ev_ref (EV_A);	2485	ev_ref (EV_A);
1811	}	2486	}
1812		2487
1813	void inline_size	2488	inline_size void
1814	ev_stop (EV_P_ W w)	2489	ev_stop (EV_P_ W w)
1815	{	2490	{
1816	ev_unref (EV_A);	2491	ev_unref (EV_A);
1817	w->active = 0;	2492	w->active = 0;
1818	}	2493	}
…		…
1825	int fd = w->fd;	2500	int fd = w->fd;
1826		2501
1827	if (expect_false (ev_is_active (w)))	2502	if (expect_false (ev_is_active (w)))
1828	return;	2503	return;
1829		2504
1830	assert (("ev_io_start called with negative fd", fd >= 0));	2505	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2506	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2507
		2508	EV_FREQUENT_CHECK;
1831		2509
1832	ev_start (EV_A_ (W)w, 1);	2510	ev_start (EV_A_ (W)w, 1);
1833	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2511	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1834	wlist_add (&anfds[fd].head, (WL)w);	2512	wlist_add (&anfds[fd].head, (WL)w);
1835		2513
1836	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2514	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1837	w->events &= ~EV_IOFDSET;	2515	w->events &= ~EV__IOFDSET;
		2516
		2517	EV_FREQUENT_CHECK;
1838	}	2518	}
1839		2519
1840	void noinline	2520	void noinline
1841	ev_io_stop (EV_P_ ev_io *w)	2521	ev_io_stop (EV_P_ ev_io *w)
1842	{	2522	{
1843	clear_pending (EV_A_ (W)w);	2523	clear_pending (EV_A_ (W)w);
1844	if (expect_false (!ev_is_active (w)))	2524	if (expect_false (!ev_is_active (w)))
1845	return;	2525	return;
1846		2526
1847	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2527	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2528
		2529	EV_FREQUENT_CHECK;
1848		2530
1849	wlist_del (&anfds[w->fd].head, (WL)w);	2531	wlist_del (&anfds[w->fd].head, (WL)w);
1850	ev_stop (EV_A_ (W)w);	2532	ev_stop (EV_A_ (W)w);
1851		2533
1852	fd_change (EV_A_ w->fd, 1);	2534	fd_change (EV_A_ w->fd, 1);
		2535
		2536	EV_FREQUENT_CHECK;
1853	}	2537	}
1854		2538
1855	void noinline	2539	void noinline
1856	ev_timer_start (EV_P_ ev_timer *w)	2540	ev_timer_start (EV_P_ ev_timer *w)
1857	{	2541	{
1858	if (expect_false (ev_is_active (w)))	2542	if (expect_false (ev_is_active (w)))
1859	return;	2543	return;
1860		2544
1861	((WT)w)->at += mn_now;	2545	ev_at (w) += mn_now;
1862		2546
1863	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2547	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1864		2548
		2549	EV_FREQUENT_CHECK;
		2550
		2551	++timercnt;
1865	ev_start (EV_A_ (W)w, ++timercnt);	2552	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1866	array_needsize (WT, timers, timermax, timercnt, EMPTY2);	2553	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1867	timers [timercnt - 1] = (WT)w;	2554	ANHE_w (timers [ev_active (w)]) = (WT)w;
1868	upheap (timers, timercnt - 1);	2555	ANHE_at_cache (timers [ev_active (w)]);
		2556	upheap (timers, ev_active (w));
1869		2557
		2558	EV_FREQUENT_CHECK;
		2559
1870	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	2560	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1871	}	2561	}
1872		2562
1873	void noinline	2563	void noinline
1874	ev_timer_stop (EV_P_ ev_timer *w)	2564	ev_timer_stop (EV_P_ ev_timer *w)
1875	{	2565	{
1876	clear_pending (EV_A_ (W)w);	2566	clear_pending (EV_A_ (W)w);
1877	if (expect_false (!ev_is_active (w)))	2567	if (expect_false (!ev_is_active (w)))
1878	return;	2568	return;
1879		2569
1880	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));	2570	EV_FREQUENT_CHECK;
1881		2571
1882	{	2572	{
1883	int active = ((W)w)->active;	2573	int active = ev_active (w);
1884		2574
		2575	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2576
		2577	--timercnt;
		2578
1885	if (expect_true (--active < --timercnt))	2579	if (expect_true (active < timercnt + HEAP0))
1886	{	2580	{
1887	timers [active] = timers [timercnt];	2581	timers [active] = timers [timercnt + HEAP0];
1888	adjustheap (timers, timercnt, active);	2582	adjustheap (timers, timercnt, active);
1889	}	2583	}
1890	}	2584	}
1891		2585
1892	((WT)w)->at -= mn_now;	2586	EV_FREQUENT_CHECK;
		2587
		2588	ev_at (w) -= mn_now;
1893		2589
1894	ev_stop (EV_A_ (W)w);	2590	ev_stop (EV_A_ (W)w);
1895	}	2591	}
1896		2592
1897	void noinline	2593	void noinline
1898	ev_timer_again (EV_P_ ev_timer *w)	2594	ev_timer_again (EV_P_ ev_timer *w)
1899	{	2595	{
		2596	EV_FREQUENT_CHECK;
		2597
1900	if (ev_is_active (w))	2598	if (ev_is_active (w))
1901	{	2599	{
1902	if (w->repeat)	2600	if (w->repeat)
1903	{	2601	{
1904	((WT)w)->at = mn_now + w->repeat;	2602	ev_at (w) = mn_now + w->repeat;
		2603	ANHE_at_cache (timers [ev_active (w)]);
1905	adjustheap (timers, timercnt, ((W)w)->active - 1);	2604	adjustheap (timers, timercnt, ev_active (w));
1906	}	2605	}
1907	else	2606	else
1908	ev_timer_stop (EV_A_ w);	2607	ev_timer_stop (EV_A_ w);
1909	}	2608	}
1910	else if (w->repeat)	2609	else if (w->repeat)
1911	{	2610	{
1912	w->at = w->repeat;	2611	ev_at (w) = w->repeat;
1913	ev_timer_start (EV_A_ w);	2612	ev_timer_start (EV_A_ w);
1914	}	2613	}
		2614
		2615	EV_FREQUENT_CHECK;
		2616	}
		2617
		2618	ev_tstamp
		2619	ev_timer_remaining (EV_P_ ev_timer *w)
		2620	{
		2621	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1915	}	2622	}
1916		2623
1917	#if EV_PERIODIC_ENABLE	2624	#if EV_PERIODIC_ENABLE
1918	void noinline	2625	void noinline
1919	ev_periodic_start (EV_P_ ev_periodic *w)	2626	ev_periodic_start (EV_P_ ev_periodic *w)
1920	{	2627	{
1921	if (expect_false (ev_is_active (w)))	2628	if (expect_false (ev_is_active (w)))
1922	return;	2629	return;
1923		2630
1924	if (w->reschedule_cb)	2631	if (w->reschedule_cb)
1925	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2632	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1926	else if (w->interval)	2633	else if (w->interval)
1927	{	2634	{
1928	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2635	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1929	/* this formula differs from the one in periodic_reify because we do not always round up */	2636	/* this formula differs from the one in periodic_reify because we do not always round up */
1930	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2637	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1931	}	2638	}
1932	else	2639	else
1933	((WT)w)->at = w->offset;	2640	ev_at (w) = w->offset;
1934		2641
		2642	EV_FREQUENT_CHECK;
		2643
		2644	++periodiccnt;
1935	ev_start (EV_A_ (W)w, ++periodiccnt);	2645	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1936	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);	2646	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1937	periodics [periodiccnt - 1] = (WT)w;	2647	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1938	upheap (periodics, periodiccnt - 1);	2648	ANHE_at_cache (periodics [ev_active (w)]);
		2649	upheap (periodics, ev_active (w));
1939		2650
		2651	EV_FREQUENT_CHECK;
		2652
1940	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2653	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1941	}	2654	}
1942		2655
1943	void noinline	2656	void noinline
1944	ev_periodic_stop (EV_P_ ev_periodic *w)	2657	ev_periodic_stop (EV_P_ ev_periodic *w)
1945	{	2658	{
1946	clear_pending (EV_A_ (W)w);	2659	clear_pending (EV_A_ (W)w);
1947	if (expect_false (!ev_is_active (w)))	2660	if (expect_false (!ev_is_active (w)))
1948	return;	2661	return;
1949		2662
1950	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));	2663	EV_FREQUENT_CHECK;
1951		2664
1952	{	2665	{
1953	int active = ((W)w)->active;	2666	int active = ev_active (w);
1954		2667
		2668	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2669
		2670	--periodiccnt;
		2671
1955	if (expect_true (--active < --periodiccnt))	2672	if (expect_true (active < periodiccnt + HEAP0))
1956	{	2673	{
1957	periodics [active] = periodics [periodiccnt];	2674	periodics [active] = periodics [periodiccnt + HEAP0];
1958	adjustheap (periodics, periodiccnt, active);	2675	adjustheap (periodics, periodiccnt, active);
1959	}	2676	}
1960	}	2677	}
1961		2678
		2679	EV_FREQUENT_CHECK;
		2680
1962	ev_stop (EV_A_ (W)w);	2681	ev_stop (EV_A_ (W)w);
1963	}	2682	}
1964		2683
1965	void noinline	2684	void noinline
1966	ev_periodic_again (EV_P_ ev_periodic *w)	2685	ev_periodic_again (EV_P_ ev_periodic *w)
…		…
1976	#endif	2695	#endif
1977		2696
1978	void noinline	2697	void noinline
1979	ev_signal_start (EV_P_ ev_signal *w)	2698	ev_signal_start (EV_P_ ev_signal *w)
1980	{	2699	{
1981	#if EV_MULTIPLICITY
1982	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1983	#endif
1984	if (expect_false (ev_is_active (w)))	2700	if (expect_false (ev_is_active (w)))
1985	return;	2701	return;
1986		2702
1987	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2703	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1988		2704
1989	evpipe_init (EV_A);	2705	#if EV_MULTIPLICITY
		2706	assert (("libev: a signal must not be attached to two different loops",
		2707	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
1990		2708
		2709	signals [w->signum - 1].loop = EV_A;
		2710	#endif
		2711
		2712	EV_FREQUENT_CHECK;
		2713
		2714	#if EV_USE_SIGNALFD
		2715	if (sigfd == -2)
1991	{	2716	{
1992	#ifndef _WIN32	2717	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
1993	sigset_t full, prev;	2718	if (sigfd < 0 && errno == EINVAL)
1994	sigfillset (&full);	2719	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
1995	sigprocmask (SIG_SETMASK, &full, &prev);
1996	#endif
1997		2720
1998	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2721	if (sigfd >= 0)
		2722	{
		2723	fd_intern (sigfd); /* doing it twice will not hurt */
1999		2724
2000	#ifndef _WIN32	2725	sigemptyset (&sigfd_set);
2001	sigprocmask (SIG_SETMASK, &prev, 0);	2726
2002	#endif	2727	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2728	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2729	ev_io_start (EV_A_ &sigfd_w);
		2730	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2731	}
2003	}	2732	}
		2733
		2734	if (sigfd >= 0)
		2735	{
		2736	/* TODO: check .head */
		2737	sigaddset (&sigfd_set, w->signum);
		2738	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2739
		2740	signalfd (sigfd, &sigfd_set, 0);
		2741	}
		2742	#endif
2004		2743
2005	ev_start (EV_A_ (W)w, 1);	2744	ev_start (EV_A_ (W)w, 1);
2006	wlist_add (&signals [w->signum - 1].head, (WL)w);	2745	wlist_add (&signals [w->signum - 1].head, (WL)w);
2007		2746
2008	if (!((WL)w)->next)	2747	if (!((WL)w)->next)
		2748	# if EV_USE_SIGNALFD
		2749	if (sigfd < 0) /*TODO*/
		2750	# endif
2009	{	2751	{
2010	#if _WIN32	2752	# if _WIN32
		2753	evpipe_init (EV_A);
		2754
2011	signal (w->signum, ev_sighandler);	2755	signal (w->signum, ev_sighandler);
2012	#else	2756	# else
2013	struct sigaction sa;	2757	struct sigaction sa;
		2758
		2759	evpipe_init (EV_A);
		2760
2014	sa.sa_handler = ev_sighandler;	2761	sa.sa_handler = ev_sighandler;
2015	sigfillset (&sa.sa_mask);	2762	sigfillset (&sa.sa_mask);
2016	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2763	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2017	sigaction (w->signum, &sa, 0);	2764	sigaction (w->signum, &sa, 0);
		2765
		2766	sigemptyset (&sa.sa_mask);
		2767	sigaddset (&sa.sa_mask, w->signum);
		2768	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2018	#endif	2769	#endif
2019	}	2770	}
		2771
		2772	EV_FREQUENT_CHECK;
2020	}	2773	}
2021		2774
2022	void noinline	2775	void noinline
2023	ev_signal_stop (EV_P_ ev_signal *w)	2776	ev_signal_stop (EV_P_ ev_signal *w)
2024	{	2777	{
2025	clear_pending (EV_A_ (W)w);	2778	clear_pending (EV_A_ (W)w);
2026	if (expect_false (!ev_is_active (w)))	2779	if (expect_false (!ev_is_active (w)))
2027	return;	2780	return;
2028		2781
		2782	EV_FREQUENT_CHECK;
		2783
2029	wlist_del (&signals [w->signum - 1].head, (WL)w);	2784	wlist_del (&signals [w->signum - 1].head, (WL)w);
2030	ev_stop (EV_A_ (W)w);	2785	ev_stop (EV_A_ (W)w);
2031		2786
2032	if (!signals [w->signum - 1].head)	2787	if (!signals [w->signum - 1].head)
		2788	{
		2789	#if EV_MULTIPLICITY
		2790	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2791	#endif
		2792	#if EV_USE_SIGNALFD
		2793	if (sigfd >= 0)
		2794	{
		2795	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2796	sigdelset (&sigfd_set, w->signum);
		2797	signalfd (sigfd, &sigfd_set, 0);
		2798	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2799	/*TODO: maybe unblock signal? */
		2800	}
		2801	else
		2802	#endif
2033	signal (w->signum, SIG_DFL);	2803	signal (w->signum, SIG_DFL);
		2804	}
		2805
		2806	EV_FREQUENT_CHECK;
2034	}	2807	}
2035		2808
2036	void	2809	void
2037	ev_child_start (EV_P_ ev_child *w)	2810	ev_child_start (EV_P_ ev_child *w)
2038	{	2811	{
2039	#if EV_MULTIPLICITY	2812	#if EV_MULTIPLICITY
2040	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2813	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2041	#endif	2814	#endif
2042	if (expect_false (ev_is_active (w)))	2815	if (expect_false (ev_is_active (w)))
2043	return;	2816	return;
2044		2817
		2818	EV_FREQUENT_CHECK;
		2819
2045	ev_start (EV_A_ (W)w, 1);	2820	ev_start (EV_A_ (W)w, 1);
2046	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2821	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2822
		2823	EV_FREQUENT_CHECK;
2047	}	2824	}
2048		2825
2049	void	2826	void
2050	ev_child_stop (EV_P_ ev_child *w)	2827	ev_child_stop (EV_P_ ev_child *w)
2051	{	2828	{
2052	clear_pending (EV_A_ (W)w);	2829	clear_pending (EV_A_ (W)w);
2053	if (expect_false (!ev_is_active (w)))	2830	if (expect_false (!ev_is_active (w)))
2054	return;	2831	return;
2055		2832
		2833	EV_FREQUENT_CHECK;
		2834
2056	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2835	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2057	ev_stop (EV_A_ (W)w);	2836	ev_stop (EV_A_ (W)w);
		2837
		2838	EV_FREQUENT_CHECK;
2058	}	2839	}
2059		2840
2060	#if EV_STAT_ENABLE	2841	#if EV_STAT_ENABLE
2061		2842
2062	# ifdef _WIN32	2843	# ifdef _WIN32
2063	# undef lstat	2844	# undef lstat
2064	# define lstat(a,b) _stati64 (a,b)	2845	# define lstat(a,b) _stati64 (a,b)
2065	# endif	2846	# endif
2066		2847
2067	#define DEF_STAT_INTERVAL 5.0074891	2848	#define DEF_STAT_INTERVAL 5.0074891
		2849	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2068	#define MIN_STAT_INTERVAL 0.1074891	2850	#define MIN_STAT_INTERVAL 0.1074891
2069		2851
2070	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2852	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2071		2853
2072	#if EV_USE_INOTIFY	2854	#if EV_USE_INOTIFY
2073	# define EV_INOTIFY_BUFSIZE 8192	2855	# define EV_INOTIFY_BUFSIZE 8192
…		…
2075	static void noinline	2857	static void noinline
2076	infy_add (EV_P_ ev_stat *w)	2858	infy_add (EV_P_ ev_stat *w)
2077	{	2859	{
2078	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);	2860	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2079		2861
2080	if (w->wd < 0)	2862	if (w->wd >= 0)
		2863	{
		2864	struct statfs sfs;
		2865
		2866	/* now local changes will be tracked by inotify, but remote changes won't */
		2867	/* unless the filesystem is known to be local, we therefore still poll */
		2868	/* also do poll on <2.6.25, but with normal frequency */
		2869
		2870	if (!fs_2625)
		2871	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2872	else if (!statfs (w->path, &sfs)
		2873	&& (sfs.f_type == 0x1373 /* devfs */
		2874	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2875	|| sfs.f_type == 0x3153464a /* jfs */
		2876	|| sfs.f_type == 0x52654973 /* reiser3 */
		2877	|| sfs.f_type == 0x01021994 /* tempfs */
		2878	|| sfs.f_type == 0x58465342 /* xfs */))
		2879	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2880	else
		2881	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2081	{	2882	}
2082	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2883	else
		2884	{
		2885	/* can't use inotify, continue to stat */
		2886	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2083		2887
2084	/* monitor some parent directory for speedup hints */	2888	/* if path is not there, monitor some parent directory for speedup hints */
		2889	/* note that exceeding the hardcoded path limit is not a correctness issue, */
		2890	/* but an efficiency issue only */
2085	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2891	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2086	{	2892	{
2087	char path [4096];	2893	char path [4096];
2088	strcpy (path, w->path);	2894	strcpy (path, w->path);
2089		2895
…		…
2092	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2898	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2093	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2899	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2094		2900
2095	char *pend = strrchr (path, '/');	2901	char *pend = strrchr (path, '/');
2096		2902
2097	if (!pend)	2903	if (!pend || pend == path)
2098	break; /* whoops, no '/', complain to your admin */	2904	break;
2099		2905
2100	*pend = 0;	2906	*pend = 0;
2101	w->wd = inotify_add_watch (fs_fd, path, mask);	2907	w->wd = inotify_add_watch (fs_fd, path, mask);
2102	}	2908	}
2103	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2909	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2104	}	2910	}
2105	}	2911	}
2106	else
2107	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2108		2912
2109	if (w->wd >= 0)	2913	if (w->wd >= 0)
2110	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2914	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2915
		2916	/* now re-arm timer, if required */
		2917	if (ev_is_active (&w->timer)) ev_ref (EV_A);
		2918	ev_timer_again (EV_A_ &w->timer);
		2919	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2111	}	2920	}
2112		2921
2113	static void noinline	2922	static void noinline
2114	infy_del (EV_P_ ev_stat *w)	2923	infy_del (EV_P_ ev_stat *w)
2115	{	2924	{
…		…
2129		2938
2130	static void noinline	2939	static void noinline
2131	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2940	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2132	{	2941	{
2133	if (slot < 0)	2942	if (slot < 0)
2134	/* overflow, need to check for all hahs slots */	2943	/* overflow, need to check for all hash slots */
2135	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2944	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2136	infy_wd (EV_A_ slot, wd, ev);	2945	infy_wd (EV_A_ slot, wd, ev);
2137	else	2946	else
2138	{	2947	{
2139	WL w_;	2948	WL w_;
…		…
2145		2954
2146	if (w->wd == wd || wd == -1)	2955	if (w->wd == wd || wd == -1)
2147	{	2956	{
2148	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2957	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2149	{	2958	{
		2959	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2150	w->wd = -1;	2960	w->wd = -1;
2151	infy_add (EV_A_ w); /* re-add, no matter what */	2961	infy_add (EV_A_ w); /* re-add, no matter what */
2152	}	2962	}
2153		2963
2154	stat_timer_cb (EV_A_ &w->timer, 0);	2964	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2167		2977
2168	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2978	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2169	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2979	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2170	}	2980	}
2171		2981
2172	void inline_size	2982	inline_size void
		2983	check_2625 (EV_P)
		2984	{
		2985	/* kernels < 2.6.25 are borked
		2986	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2987	*/
		2988	struct utsname buf;
		2989	int major, minor, micro;
		2990
		2991	if (uname (&buf))
		2992	return;
		2993
		2994	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2995	return;
		2996
		2997	if (major < 2
		2998	|| (major == 2 && minor < 6)
		2999	|| (major == 2 && minor == 6 && micro < 25))
		3000	return;
		3001
		3002	fs_2625 = 1;
		3003	}
		3004
		3005	inline_size int
		3006	infy_newfd (void)
		3007	{
		3008	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3009	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3010	if (fd >= 0)
		3011	return fd;
		3012	#endif
		3013	return inotify_init ();
		3014	}
		3015
		3016	inline_size void
2173	infy_init (EV_P)	3017	infy_init (EV_P)
2174	{	3018	{
2175	if (fs_fd != -2)	3019	if (fs_fd != -2)
2176	return;	3020	return;
2177		3021
		3022	fs_fd = -1;
		3023
		3024	check_2625 (EV_A);
		3025
2178	fs_fd = inotify_init ();	3026	fs_fd = infy_newfd ();
2179		3027
2180	if (fs_fd >= 0)	3028	if (fs_fd >= 0)
2181	{	3029	{
		3030	fd_intern (fs_fd);
2182	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3031	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2183	ev_set_priority (&fs_w, EV_MAXPRI);	3032	ev_set_priority (&fs_w, EV_MAXPRI);
2184	ev_io_start (EV_A_ &fs_w);	3033	ev_io_start (EV_A_ &fs_w);
		3034	ev_unref (EV_A);
2185	}	3035	}
2186	}	3036	}
2187		3037
2188	void inline_size	3038	inline_size void
2189	infy_fork (EV_P)	3039	infy_fork (EV_P)
2190	{	3040	{
2191	int slot;	3041	int slot;
2192		3042
2193	if (fs_fd < 0)	3043	if (fs_fd < 0)
2194	return;	3044	return;
2195		3045
		3046	ev_ref (EV_A);
		3047	ev_io_stop (EV_A_ &fs_w);
2196	close (fs_fd);	3048	close (fs_fd);
2197	fs_fd = inotify_init ();	3049	fs_fd = infy_newfd ();
		3050
		3051	if (fs_fd >= 0)
		3052	{
		3053	fd_intern (fs_fd);
		3054	ev_io_set (&fs_w, fs_fd, EV_READ);
		3055	ev_io_start (EV_A_ &fs_w);
		3056	ev_unref (EV_A);
		3057	}
2198		3058
2199	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3059	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2200	{	3060	{
2201	WL w_ = fs_hash [slot].head;	3061	WL w_ = fs_hash [slot].head;
2202	fs_hash [slot].head = 0;	3062	fs_hash [slot].head = 0;
…		…
2209	w->wd = -1;	3069	w->wd = -1;
2210		3070
2211	if (fs_fd >= 0)	3071	if (fs_fd >= 0)
2212	infy_add (EV_A_ w); /* re-add, no matter what */	3072	infy_add (EV_A_ w); /* re-add, no matter what */
2213	else	3073	else
		3074	{
		3075	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3076	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2214	ev_timer_start (EV_A_ &w->timer);	3077	ev_timer_again (EV_A_ &w->timer);
		3078	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3079	}
2215	}	3080	}
2216
2217	}	3081	}
2218	}	3082	}
2219		3083
		3084	#endif
		3085
		3086	#ifdef _WIN32
		3087	# define EV_LSTAT(p,b) _stati64 (p, b)
		3088	#else
		3089	# define EV_LSTAT(p,b) lstat (p, b)
2220	#endif	3090	#endif
2221		3091
2222	void	3092	void
2223	ev_stat_stat (EV_P_ ev_stat *w)	3093	ev_stat_stat (EV_P_ ev_stat *w)
2224	{	3094	{
…		…
2251	|| w->prev.st_atime != w->attr.st_atime	3121	|| w->prev.st_atime != w->attr.st_atime
2252	|| w->prev.st_mtime != w->attr.st_mtime	3122	|| w->prev.st_mtime != w->attr.st_mtime
2253	|| w->prev.st_ctime != w->attr.st_ctime	3123	|| w->prev.st_ctime != w->attr.st_ctime
2254	) {	3124	) {
2255	#if EV_USE_INOTIFY	3125	#if EV_USE_INOTIFY
		3126	if (fs_fd >= 0)
		3127	{
2256	infy_del (EV_A_ w);	3128	infy_del (EV_A_ w);
2257	infy_add (EV_A_ w);	3129	infy_add (EV_A_ w);
2258	ev_stat_stat (EV_A_ w); /* avoid race... */	3130	ev_stat_stat (EV_A_ w); /* avoid race... */
		3131	}
2259	#endif	3132	#endif
2260		3133
2261	ev_feed_event (EV_A_ w, EV_STAT);	3134	ev_feed_event (EV_A_ w, EV_STAT);
2262	}	3135	}
2263	}	3136	}
…		…
2266	ev_stat_start (EV_P_ ev_stat *w)	3139	ev_stat_start (EV_P_ ev_stat *w)
2267	{	3140	{
2268	if (expect_false (ev_is_active (w)))	3141	if (expect_false (ev_is_active (w)))
2269	return;	3142	return;
2270		3143
2271	/* since we use memcmp, we need to clear any padding data etc. */
2272	memset (&w->prev, 0, sizeof (ev_statdata));
2273	memset (&w->attr, 0, sizeof (ev_statdata));
2274
2275	ev_stat_stat (EV_A_ w);	3144	ev_stat_stat (EV_A_ w);
2276		3145
		3146	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2277	if (w->interval < MIN_STAT_INTERVAL)	3147	w->interval = MIN_STAT_INTERVAL;
2278	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2279		3148
2280	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3149	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2281	ev_set_priority (&w->timer, ev_priority (w));	3150	ev_set_priority (&w->timer, ev_priority (w));
2282		3151
2283	#if EV_USE_INOTIFY	3152	#if EV_USE_INOTIFY
2284	infy_init (EV_A);	3153	infy_init (EV_A);
2285		3154
2286	if (fs_fd >= 0)	3155	if (fs_fd >= 0)
2287	infy_add (EV_A_ w);	3156	infy_add (EV_A_ w);
2288	else	3157	else
2289	#endif	3158	#endif
		3159	{
2290	ev_timer_start (EV_A_ &w->timer);	3160	ev_timer_again (EV_A_ &w->timer);
		3161	ev_unref (EV_A);
		3162	}
2291		3163
2292	ev_start (EV_A_ (W)w, 1);	3164	ev_start (EV_A_ (W)w, 1);
		3165
		3166	EV_FREQUENT_CHECK;
2293	}	3167	}
2294		3168
2295	void	3169	void
2296	ev_stat_stop (EV_P_ ev_stat *w)	3170	ev_stat_stop (EV_P_ ev_stat *w)
2297	{	3171	{
2298	clear_pending (EV_A_ (W)w);	3172	clear_pending (EV_A_ (W)w);
2299	if (expect_false (!ev_is_active (w)))	3173	if (expect_false (!ev_is_active (w)))
2300	return;	3174	return;
2301		3175
		3176	EV_FREQUENT_CHECK;
		3177
2302	#if EV_USE_INOTIFY	3178	#if EV_USE_INOTIFY
2303	infy_del (EV_A_ w);	3179	infy_del (EV_A_ w);
2304	#endif	3180	#endif
		3181
		3182	if (ev_is_active (&w->timer))
		3183	{
		3184	ev_ref (EV_A);
2305	ev_timer_stop (EV_A_ &w->timer);	3185	ev_timer_stop (EV_A_ &w->timer);
		3186	}
2306		3187
2307	ev_stop (EV_A_ (W)w);	3188	ev_stop (EV_A_ (W)w);
		3189
		3190	EV_FREQUENT_CHECK;
2308	}	3191	}
2309	#endif	3192	#endif
2310		3193
2311	#if EV_IDLE_ENABLE	3194	#if EV_IDLE_ENABLE
2312	void	3195	void
…		…
2314	{	3197	{
2315	if (expect_false (ev_is_active (w)))	3198	if (expect_false (ev_is_active (w)))
2316	return;	3199	return;
2317		3200
2318	pri_adjust (EV_A_ (W)w);	3201	pri_adjust (EV_A_ (W)w);
		3202
		3203	EV_FREQUENT_CHECK;
2319		3204
2320	{	3205	{
2321	int active = ++idlecnt [ABSPRI (w)];	3206	int active = ++idlecnt [ABSPRI (w)];
2322		3207
2323	++idleall;	3208	++idleall;
2324	ev_start (EV_A_ (W)w, active);	3209	ev_start (EV_A_ (W)w, active);
2325		3210
2326	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	3211	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2327	idles [ABSPRI (w)][active - 1] = w;	3212	idles [ABSPRI (w)][active - 1] = w;
2328	}	3213	}
		3214
		3215	EV_FREQUENT_CHECK;
2329	}	3216	}
2330		3217
2331	void	3218	void
2332	ev_idle_stop (EV_P_ ev_idle *w)	3219	ev_idle_stop (EV_P_ ev_idle *w)
2333	{	3220	{
2334	clear_pending (EV_A_ (W)w);	3221	clear_pending (EV_A_ (W)w);
2335	if (expect_false (!ev_is_active (w)))	3222	if (expect_false (!ev_is_active (w)))
2336	return;	3223	return;
2337		3224
		3225	EV_FREQUENT_CHECK;
		3226
2338	{	3227	{
2339	int active = ((W)w)->active;	3228	int active = ev_active (w);
2340		3229
2341	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3230	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2342	((W)idles [ABSPRI (w)][active - 1])->active = active;	3231	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2343		3232
2344	ev_stop (EV_A_ (W)w);	3233	ev_stop (EV_A_ (W)w);
2345	--idleall;	3234	--idleall;
2346	}	3235	}
		3236
		3237	EV_FREQUENT_CHECK;
2347	}	3238	}
2348	#endif	3239	#endif
2349		3240
2350	void	3241	void
2351	ev_prepare_start (EV_P_ ev_prepare *w)	3242	ev_prepare_start (EV_P_ ev_prepare *w)
2352	{	3243	{
2353	if (expect_false (ev_is_active (w)))	3244	if (expect_false (ev_is_active (w)))
2354	return;	3245	return;
		3246
		3247	EV_FREQUENT_CHECK;
2355		3248
2356	ev_start (EV_A_ (W)w, ++preparecnt);	3249	ev_start (EV_A_ (W)w, ++preparecnt);
2357	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3250	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2358	prepares [preparecnt - 1] = w;	3251	prepares [preparecnt - 1] = w;
		3252
		3253	EV_FREQUENT_CHECK;
2359	}	3254	}
2360		3255
2361	void	3256	void
2362	ev_prepare_stop (EV_P_ ev_prepare *w)	3257	ev_prepare_stop (EV_P_ ev_prepare *w)
2363	{	3258	{
2364	clear_pending (EV_A_ (W)w);	3259	clear_pending (EV_A_ (W)w);
2365	if (expect_false (!ev_is_active (w)))	3260	if (expect_false (!ev_is_active (w)))
2366	return;	3261	return;
2367		3262
		3263	EV_FREQUENT_CHECK;
		3264
2368	{	3265	{
2369	int active = ((W)w)->active;	3266	int active = ev_active (w);
		3267
2370	prepares [active - 1] = prepares [--preparecnt];	3268	prepares [active - 1] = prepares [--preparecnt];
2371	((W)prepares [active - 1])->active = active;	3269	ev_active (prepares [active - 1]) = active;
2372	}	3270	}
2373		3271
2374	ev_stop (EV_A_ (W)w);	3272	ev_stop (EV_A_ (W)w);
		3273
		3274	EV_FREQUENT_CHECK;
2375	}	3275	}
2376		3276
2377	void	3277	void
2378	ev_check_start (EV_P_ ev_check *w)	3278	ev_check_start (EV_P_ ev_check *w)
2379	{	3279	{
2380	if (expect_false (ev_is_active (w)))	3280	if (expect_false (ev_is_active (w)))
2381	return;	3281	return;
		3282
		3283	EV_FREQUENT_CHECK;
2382		3284
2383	ev_start (EV_A_ (W)w, ++checkcnt);	3285	ev_start (EV_A_ (W)w, ++checkcnt);
2384	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3286	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2385	checks [checkcnt - 1] = w;	3287	checks [checkcnt - 1] = w;
		3288
		3289	EV_FREQUENT_CHECK;
2386	}	3290	}
2387		3291
2388	void	3292	void
2389	ev_check_stop (EV_P_ ev_check *w)	3293	ev_check_stop (EV_P_ ev_check *w)
2390	{	3294	{
2391	clear_pending (EV_A_ (W)w);	3295	clear_pending (EV_A_ (W)w);
2392	if (expect_false (!ev_is_active (w)))	3296	if (expect_false (!ev_is_active (w)))
2393	return;	3297	return;
2394		3298
		3299	EV_FREQUENT_CHECK;
		3300
2395	{	3301	{
2396	int active = ((W)w)->active;	3302	int active = ev_active (w);
		3303
2397	checks [active - 1] = checks [--checkcnt];	3304	checks [active - 1] = checks [--checkcnt];
2398	((W)checks [active - 1])->active = active;	3305	ev_active (checks [active - 1]) = active;
2399	}	3306	}
2400		3307
2401	ev_stop (EV_A_ (W)w);	3308	ev_stop (EV_A_ (W)w);
		3309
		3310	EV_FREQUENT_CHECK;
2402	}	3311	}
2403		3312
2404	#if EV_EMBED_ENABLE	3313	#if EV_EMBED_ENABLE
2405	void noinline	3314	void noinline
2406	ev_embed_sweep (EV_P_ ev_embed *w)	3315	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2423	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3332	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2424	{	3333	{
2425	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3334	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2426		3335
2427	{	3336	{
2428	struct ev_loop *loop = w->other;	3337	EV_P = w->other;
2429		3338
2430	while (fdchangecnt)	3339	while (fdchangecnt)
2431	{	3340	{
2432	fd_reify (EV_A);	3341	fd_reify (EV_A);
2433	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3342	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2434	}	3343	}
2435	}	3344	}
2436	}	3345	}
2437		3346
		3347	static void
		3348	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3349	{
		3350	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3351
		3352	ev_embed_stop (EV_A_ w);
		3353
		3354	{
		3355	EV_P = w->other;
		3356
		3357	ev_loop_fork (EV_A);
		3358	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3359	}
		3360
		3361	ev_embed_start (EV_A_ w);
		3362	}
		3363
2438	#if 0	3364	#if 0
2439	static void	3365	static void
2440	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3366	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2441	{	3367	{
2442	ev_idle_stop (EV_A_ idle);	3368	ev_idle_stop (EV_A_ idle);
…		…
2448	{	3374	{
2449	if (expect_false (ev_is_active (w)))	3375	if (expect_false (ev_is_active (w)))
2450	return;	3376	return;
2451		3377
2452	{	3378	{
2453	struct ev_loop *loop = w->other;	3379	EV_P = w->other;
2454	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3380	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2455	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3381	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2456	}	3382	}
		3383
		3384	EV_FREQUENT_CHECK;
2457		3385
2458	ev_set_priority (&w->io, ev_priority (w));	3386	ev_set_priority (&w->io, ev_priority (w));
2459	ev_io_start (EV_A_ &w->io);	3387	ev_io_start (EV_A_ &w->io);
2460		3388
2461	ev_prepare_init (&w->prepare, embed_prepare_cb);	3389	ev_prepare_init (&w->prepare, embed_prepare_cb);
2462	ev_set_priority (&w->prepare, EV_MINPRI);	3390	ev_set_priority (&w->prepare, EV_MINPRI);
2463	ev_prepare_start (EV_A_ &w->prepare);	3391	ev_prepare_start (EV_A_ &w->prepare);
2464		3392
		3393	ev_fork_init (&w->fork, embed_fork_cb);
		3394	ev_fork_start (EV_A_ &w->fork);
		3395
2465	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3396	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2466		3397
2467	ev_start (EV_A_ (W)w, 1);	3398	ev_start (EV_A_ (W)w, 1);
		3399
		3400	EV_FREQUENT_CHECK;
2468	}	3401	}
2469		3402
2470	void	3403	void
2471	ev_embed_stop (EV_P_ ev_embed *w)	3404	ev_embed_stop (EV_P_ ev_embed *w)
2472	{	3405	{
2473	clear_pending (EV_A_ (W)w);	3406	clear_pending (EV_A_ (W)w);
2474	if (expect_false (!ev_is_active (w)))	3407	if (expect_false (!ev_is_active (w)))
2475	return;	3408	return;
2476		3409
		3410	EV_FREQUENT_CHECK;
		3411
2477	ev_io_stop (EV_A_ &w->io);	3412	ev_io_stop (EV_A_ &w->io);
2478	ev_prepare_stop (EV_A_ &w->prepare);	3413	ev_prepare_stop (EV_A_ &w->prepare);
		3414	ev_fork_stop (EV_A_ &w->fork);
2479		3415
2480	ev_stop (EV_A_ (W)w);	3416	EV_FREQUENT_CHECK;
2481	}	3417	}
2482	#endif	3418	#endif
2483		3419
2484	#if EV_FORK_ENABLE	3420	#if EV_FORK_ENABLE
2485	void	3421	void
2486	ev_fork_start (EV_P_ ev_fork *w)	3422	ev_fork_start (EV_P_ ev_fork *w)
2487	{	3423	{
2488	if (expect_false (ev_is_active (w)))	3424	if (expect_false (ev_is_active (w)))
2489	return;	3425	return;
		3426
		3427	EV_FREQUENT_CHECK;
2490		3428
2491	ev_start (EV_A_ (W)w, ++forkcnt);	3429	ev_start (EV_A_ (W)w, ++forkcnt);
2492	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3430	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2493	forks [forkcnt - 1] = w;	3431	forks [forkcnt - 1] = w;
		3432
		3433	EV_FREQUENT_CHECK;
2494	}	3434	}
2495		3435
2496	void	3436	void
2497	ev_fork_stop (EV_P_ ev_fork *w)	3437	ev_fork_stop (EV_P_ ev_fork *w)
2498	{	3438	{
2499	clear_pending (EV_A_ (W)w);	3439	clear_pending (EV_A_ (W)w);
2500	if (expect_false (!ev_is_active (w)))	3440	if (expect_false (!ev_is_active (w)))
2501	return;	3441	return;
2502		3442
		3443	EV_FREQUENT_CHECK;
		3444
2503	{	3445	{
2504	int active = ((W)w)->active;	3446	int active = ev_active (w);
		3447
2505	forks [active - 1] = forks [--forkcnt];	3448	forks [active - 1] = forks [--forkcnt];
2506	((W)forks [active - 1])->active = active;	3449	ev_active (forks [active - 1]) = active;
2507	}	3450	}
2508		3451
2509	ev_stop (EV_A_ (W)w);	3452	ev_stop (EV_A_ (W)w);
		3453
		3454	EV_FREQUENT_CHECK;
2510	}	3455	}
2511	#endif	3456	#endif
2512		3457
2513	#if EV_ASYNC_ENABLE	3458	#if EV_ASYNC_ENABLE
2514	void	3459	void
…		…
2516	{	3461	{
2517	if (expect_false (ev_is_active (w)))	3462	if (expect_false (ev_is_active (w)))
2518	return;	3463	return;
2519		3464
2520	evpipe_init (EV_A);	3465	evpipe_init (EV_A);
		3466
		3467	EV_FREQUENT_CHECK;
2521		3468
2522	ev_start (EV_A_ (W)w, ++asynccnt);	3469	ev_start (EV_A_ (W)w, ++asynccnt);
2523	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3470	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2524	asyncs [asynccnt - 1] = w;	3471	asyncs [asynccnt - 1] = w;
		3472
		3473	EV_FREQUENT_CHECK;
2525	}	3474	}
2526		3475
2527	void	3476	void
2528	ev_async_stop (EV_P_ ev_async *w)	3477	ev_async_stop (EV_P_ ev_async *w)
2529	{	3478	{
2530	clear_pending (EV_A_ (W)w);	3479	clear_pending (EV_A_ (W)w);
2531	if (expect_false (!ev_is_active (w)))	3480	if (expect_false (!ev_is_active (w)))
2532	return;	3481	return;
2533		3482
		3483	EV_FREQUENT_CHECK;
		3484
2534	{	3485	{
2535	int active = ((W)w)->active;	3486	int active = ev_active (w);
		3487
2536	asyncs [active - 1] = asyncs [--asynccnt];	3488	asyncs [active - 1] = asyncs [--asynccnt];
2537	((W)asyncs [active - 1])->active = active;	3489	ev_active (asyncs [active - 1]) = active;
2538	}	3490	}
2539		3491
2540	ev_stop (EV_A_ (W)w);	3492	ev_stop (EV_A_ (W)w);
		3493
		3494	EV_FREQUENT_CHECK;
2541	}	3495	}
2542		3496
2543	void	3497	void
2544	ev_async_send (EV_P_ ev_async *w)	3498	ev_async_send (EV_P_ ev_async *w)
2545	{	3499	{
2546	w->sent = 1;	3500	w->sent = 1;
2547	evpipe_write (EV_A_ &gotasync);	3501	evpipe_write (EV_A_ &async_pending);
2548	}	3502	}
2549	#endif	3503	#endif
2550		3504
2551	/*****************************************************************************/	3505	/*****************************************************************************/
2552		3506
…		…
2562	once_cb (EV_P_ struct ev_once *once, int revents)	3516	once_cb (EV_P_ struct ev_once *once, int revents)
2563	{	3517	{
2564	void (*cb)(int revents, void *arg) = once->cb;	3518	void (*cb)(int revents, void *arg) = once->cb;
2565	void *arg = once->arg;	3519	void *arg = once->arg;
2566		3520
2567	ev_io_stop (EV_A_ &once->io);	3521	ev_io_stop (EV_A_ &once->io);
2568	ev_timer_stop (EV_A_ &once->to);	3522	ev_timer_stop (EV_A_ &once->to);
2569	ev_free (once);	3523	ev_free (once);
2570		3524
2571	cb (revents, arg);	3525	cb (revents, arg);
2572	}	3526	}
2573		3527
2574	static void	3528	static void
2575	once_cb_io (EV_P_ ev_io *w, int revents)	3529	once_cb_io (EV_P_ ev_io *w, int revents)
2576	{	3530	{
2577	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3531	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3532
		3533	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2578	}	3534	}
2579		3535
2580	static void	3536	static void
2581	once_cb_to (EV_P_ ev_timer *w, int revents)	3537	once_cb_to (EV_P_ ev_timer *w, int revents)
2582	{	3538	{
2583	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3539	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3540
		3541	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2584	}	3542	}
2585		3543
2586	void	3544	void
2587	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3545	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2588	{	3546	{
…		…
2610	ev_timer_set (&once->to, timeout, 0.);	3568	ev_timer_set (&once->to, timeout, 0.);
2611	ev_timer_start (EV_A_ &once->to);	3569	ev_timer_start (EV_A_ &once->to);
2612	}	3570	}
2613	}	3571	}
2614		3572
		3573	/*****************************************************************************/
		3574
		3575	#if EV_WALK_ENABLE
		3576	void
		3577	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3578	{
		3579	int i, j;
		3580	ev_watcher_list *wl, *wn;
		3581
		3582	if (types & (EV_IO | EV_EMBED))
		3583	for (i = 0; i < anfdmax; ++i)
		3584	for (wl = anfds [i].head; wl; )
		3585	{
		3586	wn = wl->next;
		3587
		3588	#if EV_EMBED_ENABLE
		3589	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3590	{
		3591	if (types & EV_EMBED)
		3592	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3593	}
		3594	else
		3595	#endif
		3596	#if EV_USE_INOTIFY
		3597	if (ev_cb ((ev_io *)wl) == infy_cb)
		3598	;
		3599	else
		3600	#endif
		3601	if ((ev_io *)wl != &pipe_w)
		3602	if (types & EV_IO)
		3603	cb (EV_A_ EV_IO, wl);
		3604
		3605	wl = wn;
		3606	}
		3607
		3608	if (types & (EV_TIMER | EV_STAT))
		3609	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3610	#if EV_STAT_ENABLE
		3611	/*TODO: timer is not always active*/
		3612	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3613	{
		3614	if (types & EV_STAT)
		3615	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3616	}
		3617	else
		3618	#endif
		3619	if (types & EV_TIMER)
		3620	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3621
		3622	#if EV_PERIODIC_ENABLE
		3623	if (types & EV_PERIODIC)
		3624	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3625	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3626	#endif
		3627
		3628	#if EV_IDLE_ENABLE
		3629	if (types & EV_IDLE)
		3630	for (j = NUMPRI; i--; )
		3631	for (i = idlecnt [j]; i--; )
		3632	cb (EV_A_ EV_IDLE, idles [j][i]);
		3633	#endif
		3634
		3635	#if EV_FORK_ENABLE
		3636	if (types & EV_FORK)
		3637	for (i = forkcnt; i--; )
		3638	if (ev_cb (forks [i]) != embed_fork_cb)
		3639	cb (EV_A_ EV_FORK, forks [i]);
		3640	#endif
		3641
		3642	#if EV_ASYNC_ENABLE
		3643	if (types & EV_ASYNC)
		3644	for (i = asynccnt; i--; )
		3645	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3646	#endif
		3647
		3648	if (types & EV_PREPARE)
		3649	for (i = preparecnt; i--; )
		3650	#if EV_EMBED_ENABLE
		3651	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3652	#endif
		3653	cb (EV_A_ EV_PREPARE, prepares [i]);
		3654
		3655	if (types & EV_CHECK)
		3656	for (i = checkcnt; i--; )
		3657	cb (EV_A_ EV_CHECK, checks [i]);
		3658
		3659	if (types & EV_SIGNAL)
		3660	for (i = 0; i < EV_NSIG - 1; ++i)
		3661	for (wl = signals [i].head; wl; )
		3662	{
		3663	wn = wl->next;
		3664	cb (EV_A_ EV_SIGNAL, wl);
		3665	wl = wn;
		3666	}
		3667
		3668	if (types & EV_CHILD)
		3669	for (i = EV_PID_HASHSIZE; i--; )
		3670	for (wl = childs [i]; wl; )
		3671	{
		3672	wn = wl->next;
		3673	cb (EV_A_ EV_CHILD, wl);
		3674	wl = wn;
		3675	}
		3676	/* EV_STAT 0x00001000 /* stat data changed */
		3677	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3678	}
		3679	#endif
		3680
2615	#if EV_MULTIPLICITY	3681	#if EV_MULTIPLICITY
2616	#include "ev_wrap.h"	3682	#include "ev_wrap.h"
2617	#endif	3683	#endif
2618		3684
2619	#ifdef __cplusplus	3685	#ifdef __cplusplus

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