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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 1.317 by root, Sat Nov 14 00:15:21 2009 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
47	# include EV_CONFIG_H	47	# include EV_CONFIG_H
48	# else	48	# else
49	# include "config.h"	49	# include "config.h"
50	# endif	50	# endif
51		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
		64	# endif
		65
52	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
55	# endif	69	# endif
56	# ifndef EV_USE_REALTIME	70	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	71	# define EV_USE_REALTIME 0
58	# endif	72	# endif
59	# else	73	# else
60	# ifndef EV_USE_MONOTONIC	74	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	75	# define EV_USE_MONOTONIC 0
62	# endif	76	# endif
…		…
119	# else	133	# else
120	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
121	# endif	135	# endif
122	# endif	136	# endif
123		137
		138	# ifndef EV_USE_SIGNALFD
		139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		140	# define EV_USE_SIGNALFD 1
		141	# else
		142	# define EV_USE_SIGNALFD 0
		143	# endif
		144	# endif
		145
124	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
125	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
126	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD 1
127	# else	149	# else
128	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
129	# endif	151	# endif
130	# endif	152	# endif
131		153
132	#endif	154	#endif
133		155
134	#include <math.h>	156	#include <math.h>
135	#include <stdlib.h>	157	#include <stdlib.h>
136	#include <fcntl.h>	158	#include <fcntl.h>
…		…
154	#ifndef _WIN32	176	#ifndef _WIN32
155	# include <sys/time.h>	177	# include <sys/time.h>
156	# include <sys/wait.h>	178	# include <sys/wait.h>
157	# include <unistd.h>	179	# include <unistd.h>
158	#else	180	#else
		181	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	182	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	183	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	184	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	185	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	186	# endif
164	#endif	187	#endif
165		188
166	/* this block tries to deduce configuration from header-defined symbols and defaults */	189	/* this block tries to deduce configuration from header-defined symbols and defaults */
167		190
		191	/* try to deduce the maximum number of signals on this platform */
		192	#if defined (EV_NSIG)
		193	/* use what's provided */
		194	#elif defined (NSIG)
		195	# define EV_NSIG (NSIG)
		196	#elif defined(_NSIG)
		197	# define EV_NSIG (_NSIG)
		198	#elif defined (SIGMAX)
		199	# define EV_NSIG (SIGMAX+1)
		200	#elif defined (SIG_MAX)
		201	# define EV_NSIG (SIG_MAX+1)
		202	#elif defined (_SIG_MAX)
		203	# define EV_NSIG (_SIG_MAX+1)
		204	#elif defined (MAXSIG)
		205	# define EV_NSIG (MAXSIG+1)
		206	#elif defined (MAX_SIG)
		207	# define EV_NSIG (MAX_SIG+1)
		208	#elif defined (SIGARRAYSIZE)
		209	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		210	#elif defined (_sys_nsig)
		211	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		212	#else
		213	# error "unable to find value for NSIG, please report"
		214	/* to make it compile regardless, just remove the above line */
		215	# define EV_NSIG 65
		216	#endif
		217
		218	#ifndef EV_USE_CLOCK_SYSCALL
		219	# if __linux && __GLIBC__ >= 2
		220	# define EV_USE_CLOCK_SYSCALL 1
		221	# else
		222	# define EV_USE_CLOCK_SYSCALL 0
		223	# endif
		224	#endif
		225
168	#ifndef EV_USE_MONOTONIC	226	#ifndef EV_USE_MONOTONIC
		227	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		228	# define EV_USE_MONOTONIC 1
		229	# else
169	# define EV_USE_MONOTONIC 0	230	# define EV_USE_MONOTONIC 0
		231	# endif
170	#endif	232	#endif
171		233
172	#ifndef EV_USE_REALTIME	234	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	235	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	236	#endif
175		237
176	#ifndef EV_USE_NANOSLEEP	238	#ifndef EV_USE_NANOSLEEP
		239	# if _POSIX_C_SOURCE >= 199309L
		240	# define EV_USE_NANOSLEEP 1
		241	# else
177	# define EV_USE_NANOSLEEP 0	242	# define EV_USE_NANOSLEEP 0
		243	# endif
178	#endif	244	#endif
179		245
180	#ifndef EV_USE_SELECT	246	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	247	# define EV_USE_SELECT 1
182	#endif	248	#endif
…		…
235	# else	301	# else
236	# define EV_USE_EVENTFD 0	302	# define EV_USE_EVENTFD 0
237	# endif	303	# endif
238	#endif	304	#endif
239		305
		306	#ifndef EV_USE_SIGNALFD
		307	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		308	# define EV_USE_SIGNALFD 1
		309	# else
		310	# define EV_USE_SIGNALFD 0
		311	# endif
		312	#endif
		313
		314	#if 0 /* debugging */
		315	# define EV_VERIFY 3
		316	# define EV_USE_4HEAP 1
		317	# define EV_HEAP_CACHE_AT 1
		318	#endif
		319
		320	#ifndef EV_VERIFY
		321	# define EV_VERIFY !EV_MINIMAL
		322	#endif
		323
		324	#ifndef EV_USE_4HEAP
		325	# define EV_USE_4HEAP !EV_MINIMAL
		326	#endif
		327
		328	#ifndef EV_HEAP_CACHE_AT
		329	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		330	#endif
		331
		332	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		333	/* which makes programs even slower. might work on other unices, too. */
		334	#if EV_USE_CLOCK_SYSCALL
		335	# include <syscall.h>
		336	# ifdef SYS_clock_gettime
		337	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		338	# undef EV_USE_MONOTONIC
		339	# define EV_USE_MONOTONIC 1
		340	# else
		341	# undef EV_USE_CLOCK_SYSCALL
		342	# define EV_USE_CLOCK_SYSCALL 0
		343	# endif
		344	#endif
		345
240	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	346	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
241		347
242	#ifndef CLOCK_MONOTONIC	348	#ifndef CLOCK_MONOTONIC
243	# undef EV_USE_MONOTONIC	349	# undef EV_USE_MONOTONIC
244	# define EV_USE_MONOTONIC 0	350	# define EV_USE_MONOTONIC 0
…		…
259	# include <sys/select.h>	365	# include <sys/select.h>
260	# endif	366	# endif
261	#endif	367	#endif
262		368
263	#if EV_USE_INOTIFY	369	#if EV_USE_INOTIFY
		370	# include <sys/utsname.h>
		371	# include <sys/statfs.h>
264	# include <sys/inotify.h>	372	# include <sys/inotify.h>
		373	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		374	# ifndef IN_DONT_FOLLOW
		375	# undef EV_USE_INOTIFY
		376	# define EV_USE_INOTIFY 0
		377	# endif
265	#endif	378	#endif
266		379
267	#if EV_SELECT_IS_WINSOCKET	380	#if EV_SELECT_IS_WINSOCKET
268	# include <winsock.h>	381	# include <winsock.h>
269	#endif	382	#endif
270		383
271	#if EV_USE_EVENTFD	384	#if EV_USE_EVENTFD
272	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	385	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		386	# include <stdint.h>
		387	# ifndef EFD_NONBLOCK
		388	# define EFD_NONBLOCK O_NONBLOCK
		389	# endif
		390	# ifndef EFD_CLOEXEC
		391	# ifdef O_CLOEXEC
		392	# define EFD_CLOEXEC O_CLOEXEC
		393	# else
		394	# define EFD_CLOEXEC 02000000
		395	# endif
		396	# endif
		397	# ifdef __cplusplus
		398	extern "C" {
		399	# endif
273	int eventfd (unsigned int initval, int flags);	400	int eventfd (unsigned int initval, int flags);
		401	# ifdef __cplusplus
		402	}
274	#endif	403	# endif
		404	#endif
		405
		406	#if EV_USE_SIGNALFD
		407	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		408	# include <stdint.h>
		409	# ifndef SFD_NONBLOCK
		410	# define SFD_NONBLOCK O_NONBLOCK
		411	# endif
		412	# ifndef SFD_CLOEXEC
		413	# ifdef O_CLOEXEC
		414	# define SFD_CLOEXEC O_CLOEXEC
		415	# else
		416	# define SFD_CLOEXEC 02000000
		417	# endif
		418	# endif
		419	# ifdef __cplusplus
		420	extern "C" {
		421	# endif
		422	int signalfd (int fd, const sigset_t *mask, int flags);
		423
		424	struct signalfd_siginfo
		425	{
		426	uint32_t ssi_signo;
		427	char pad[128 - sizeof (uint32_t)];
		428	};
		429	# ifdef __cplusplus
		430	}
		431	# endif
		432	#endif
		433
275		434
276	/**/	435	/**/
		436
		437	#if EV_VERIFY >= 3
		438	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		439	#else
		440	# define EV_FREQUENT_CHECK do { } while (0)
		441	#endif
277		442
278	/*	443	/*
279	* This is used to avoid floating point rounding problems.	444	* This is used to avoid floating point rounding problems.
280	* It is added to ev_rt_now when scheduling periodics	445	* It is added to ev_rt_now when scheduling periodics
281	* to ensure progress, time-wise, even when rounding	446	* to ensure progress, time-wise, even when rounding
…		…
285	*/	450	*/
286	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	451	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
287		452
288	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	453	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
289	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	454	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
290	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
291		455
292	#if __GNUC__ >= 4	456	#if __GNUC__ >= 4
293	# define expect(expr,value) __builtin_expect ((expr),(value))	457	# define expect(expr,value) __builtin_expect ((expr),(value))
294	# define noinline __attribute__ ((noinline))	458	# define noinline __attribute__ ((noinline))
295	#else	459	#else
296	# define expect(expr,value) (expr)	460	# define expect(expr,value) (expr)
297	# define noinline	461	# define noinline
298	# if __STDC_VERSION__ < 199901L	462	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
299	# define inline	463	# define inline
300	# endif	464	# endif
301	#endif	465	#endif
302		466
303	#define expect_false(expr) expect ((expr) != 0, 0)	467	#define expect_false(expr) expect ((expr) != 0, 0)
…		…
308	# define inline_speed static noinline	472	# define inline_speed static noinline
309	#else	473	#else
310	# define inline_speed static inline	474	# define inline_speed static inline
311	#endif	475	#endif
312		476
313	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	477	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		478
		479	#if EV_MINPRI == EV_MAXPRI
		480	# define ABSPRI(w) (((W)w), 0)
		481	#else
314	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	482	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		483	#endif
315		484
316	#define EMPTY /* required for microsofts broken pseudo-c compiler */	485	#define EMPTY /* required for microsofts broken pseudo-c compiler */
317	#define EMPTY2(a,b) /* used to suppress some warnings */	486	#define EMPTY2(a,b) /* used to suppress some warnings */
318		487
319	typedef ev_watcher *W;	488	typedef ev_watcher *W;
320	typedef ev_watcher_list *WL;	489	typedef ev_watcher_list *WL;
321	typedef ev_watcher_time *WT;	490	typedef ev_watcher_time *WT;
322		491
323	#if EV_USE_MONOTONIC	492	#define ev_active(w) ((W)(w))->active
		493	#define ev_at(w) ((WT)(w))->at
		494
		495	#if EV_USE_REALTIME
324	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	496	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
325	/* giving it a reasonably high chance of working on typical architetcures */	497	/* giving it a reasonably high chance of working on typical architetcures */
		498	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		499	#endif
		500
		501	#if EV_USE_MONOTONIC
326	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	502	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		503	#endif
		504
		505	#ifndef EV_FD_TO_WIN32_HANDLE
		506	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		507	#endif
		508	#ifndef EV_WIN32_HANDLE_TO_FD
		509	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0)
		510	#endif
		511	#ifndef EV_WIN32_CLOSE_FD
		512	# define EV_WIN32_CLOSE_FD(fd) close (fd)
327	#endif	513	#endif
328		514
329	#ifdef _WIN32	515	#ifdef _WIN32
330	# include "ev_win32.c"	516	# include "ev_win32.c"
331	#endif	517	#endif
…		…
339	{	525	{
340	syserr_cb = cb;	526	syserr_cb = cb;
341	}	527	}
342		528
343	static void noinline	529	static void noinline
344	syserr (const char *msg)	530	ev_syserr (const char *msg)
345	{	531	{
346	if (!msg)	532	if (!msg)
347	msg = "(libev) system error";	533	msg = "(libev) system error";
348		534
349	if (syserr_cb)	535	if (syserr_cb)
…		…
353	perror (msg);	539	perror (msg);
354	abort ();	540	abort ();
355	}	541	}
356	}	542	}
357		543
		544	static void *
		545	ev_realloc_emul (void *ptr, long size)
		546	{
		547	/* some systems, notably openbsd and darwin, fail to properly
		548	* implement realloc (x, 0) (as required by both ansi c-98 and
		549	* the single unix specification, so work around them here.
		550	*/
		551
		552	if (size)
		553	return realloc (ptr, size);
		554
		555	free (ptr);
		556	return 0;
		557	}
		558
358	static void *(*alloc)(void *ptr, long size);	559	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
359		560
360	void	561	void
361	ev_set_allocator (void *(*cb)(void *ptr, long size))	562	ev_set_allocator (void *(*cb)(void *ptr, long size))
362	{	563	{
363	alloc = cb;	564	alloc = cb;
364	}	565	}
365		566
366	inline_speed void *	567	inline_speed void *
367	ev_realloc (void *ptr, long size)	568	ev_realloc (void *ptr, long size)
368	{	569	{
369	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	570	ptr = alloc (ptr, size);
370		571
371	if (!ptr && size)	572	if (!ptr && size)
372	{	573	{
373	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	574	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
374	abort ();	575	abort ();
…		…
380	#define ev_malloc(size) ev_realloc (0, (size))	581	#define ev_malloc(size) ev_realloc (0, (size))
381	#define ev_free(ptr) ev_realloc ((ptr), 0)	582	#define ev_free(ptr) ev_realloc ((ptr), 0)
382		583
383	/*****************************************************************************/	584	/*****************************************************************************/
384		585
		586	/* set in reify when reification needed */
		587	#define EV_ANFD_REIFY 1
		588
		589	/* file descriptor info structure */
385	typedef struct	590	typedef struct
386	{	591	{
387	WL head;	592	WL head;
388	unsigned char events;	593	unsigned char events; /* the events watched for */
		594	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		595	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
389	unsigned char reify;	596	unsigned char unused;
		597	#if EV_USE_EPOLL
		598	unsigned int egen; /* generation counter to counter epoll bugs */
		599	#endif
390	#if EV_SELECT_IS_WINSOCKET	600	#if EV_SELECT_IS_WINSOCKET
391	SOCKET handle;	601	SOCKET handle;
392	#endif	602	#endif
393	} ANFD;	603	} ANFD;
394		604
		605	/* stores the pending event set for a given watcher */
395	typedef struct	606	typedef struct
396	{	607	{
397	W w;	608	W w;
398	int events;	609	int events; /* the pending event set for the given watcher */
399	} ANPENDING;	610	} ANPENDING;
400		611
401	#if EV_USE_INOTIFY	612	#if EV_USE_INOTIFY
		613	/* hash table entry per inotify-id */
402	typedef struct	614	typedef struct
403	{	615	{
404	WL head;	616	WL head;
405	} ANFS;	617	} ANFS;
		618	#endif
		619
		620	/* Heap Entry */
		621	#if EV_HEAP_CACHE_AT
		622	/* a heap element */
		623	typedef struct {
		624	ev_tstamp at;
		625	WT w;
		626	} ANHE;
		627
		628	#define ANHE_w(he) (he).w /* access watcher, read-write */
		629	#define ANHE_at(he) (he).at /* access cached at, read-only */
		630	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		631	#else
		632	/* a heap element */
		633	typedef WT ANHE;
		634
		635	#define ANHE_w(he) (he)
		636	#define ANHE_at(he) (he)->at
		637	#define ANHE_at_cache(he)
406	#endif	638	#endif
407		639
408	#if EV_MULTIPLICITY	640	#if EV_MULTIPLICITY
409		641
410	struct ev_loop	642	struct ev_loop
…		…
429		661
430	static int ev_default_loop_ptr;	662	static int ev_default_loop_ptr;
431		663
432	#endif	664	#endif
433		665
		666	#if EV_MINIMAL < 2
		667	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		668	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		669	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		670	#else
		671	# define EV_RELEASE_CB (void)0
		672	# define EV_ACQUIRE_CB (void)0
		673	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		674	#endif
		675
		676	#define EVUNLOOP_RECURSE 0x80
		677
434	/*****************************************************************************/	678	/*****************************************************************************/
435		679
		680	#ifndef EV_HAVE_EV_TIME
436	ev_tstamp	681	ev_tstamp
437	ev_time (void)	682	ev_time (void)
438	{	683	{
439	#if EV_USE_REALTIME	684	#if EV_USE_REALTIME
		685	if (expect_true (have_realtime))
		686	{
440	struct timespec ts;	687	struct timespec ts;
441	clock_gettime (CLOCK_REALTIME, &ts);	688	clock_gettime (CLOCK_REALTIME, &ts);
442	return ts.tv_sec + ts.tv_nsec * 1e-9;	689	return ts.tv_sec + ts.tv_nsec * 1e-9;
443	#else	690	}
		691	#endif
		692
444	struct timeval tv;	693	struct timeval tv;
445	gettimeofday (&tv, 0);	694	gettimeofday (&tv, 0);
446	return tv.tv_sec + tv.tv_usec * 1e-6;	695	return tv.tv_sec + tv.tv_usec * 1e-6;
447	#endif
448	}	696	}
		697	#endif
449		698
450	ev_tstamp inline_size	699	inline_size ev_tstamp
451	get_clock (void)	700	get_clock (void)
452	{	701	{
453	#if EV_USE_MONOTONIC	702	#if EV_USE_MONOTONIC
454	if (expect_true (have_monotonic))	703	if (expect_true (have_monotonic))
455	{	704	{
…		…
488	struct timeval tv;	737	struct timeval tv;
489		738
490	tv.tv_sec = (time_t)delay;	739	tv.tv_sec = (time_t)delay;
491	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	740	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
492		741
		742	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		743	/* something not guaranteed by newer posix versions, but guaranteed */
		744	/* by older ones */
493	select (0, 0, 0, 0, &tv);	745	select (0, 0, 0, 0, &tv);
494	#endif	746	#endif
495	}	747	}
496	}	748	}
497		749
498	/*****************************************************************************/	750	/*****************************************************************************/
499		751
500	int inline_size	752	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		753
		754	/* find a suitable new size for the given array, */
		755	/* hopefully by rounding to a ncie-to-malloc size */
		756	inline_size int
501	array_nextsize (int elem, int cur, int cnt)	757	array_nextsize (int elem, int cur, int cnt)
502	{	758	{
503	int ncur = cur + 1;	759	int ncur = cur + 1;
504		760
505	do	761	do
506	ncur <<= 1;	762	ncur <<= 1;
507	while (cnt > ncur);	763	while (cnt > ncur);
508		764
509	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	765	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
510	if (elem * ncur > 4096)	766	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
511	{	767	{
512	ncur *= elem;	768	ncur *= elem;
513	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	769	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
514	ncur = ncur - sizeof (void *) * 4;	770	ncur = ncur - sizeof (void *) * 4;
515	ncur /= elem;	771	ncur /= elem;
516	}	772	}
517		773
518	return ncur;	774	return ncur;
…		…
522	array_realloc (int elem, void *base, int *cur, int cnt)	778	array_realloc (int elem, void *base, int *cur, int cnt)
523	{	779	{
524	*cur = array_nextsize (elem, *cur, cnt);	780	*cur = array_nextsize (elem, *cur, cnt);
525	return ev_realloc (base, elem * *cur);	781	return ev_realloc (base, elem * *cur);
526	}	782	}
		783
		784	#define array_init_zero(base,count) \
		785	memset ((void *)(base), 0, sizeof (*(base)) * (count))
527		786
528	#define array_needsize(type,base,cur,cnt,init) \	787	#define array_needsize(type,base,cur,cnt,init) \
529	if (expect_false ((cnt) > (cur))) \	788	if (expect_false ((cnt) > (cur))) \
530	{ \	789	{ \
531	int ocur_ = (cur); \	790	int ocur_ = (cur); \
…		…
543	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	802	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
544	}	803	}
545	#endif	804	#endif
546		805
547	#define array_free(stem, idx) \	806	#define array_free(stem, idx) \
548	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	807	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
549		808
550	/*****************************************************************************/	809	/*****************************************************************************/
		810
		811	/* dummy callback for pending events */
		812	static void noinline
		813	pendingcb (EV_P_ ev_prepare *w, int revents)
		814	{
		815	}
551		816
552	void noinline	817	void noinline
553	ev_feed_event (EV_P_ void *w, int revents)	818	ev_feed_event (EV_P_ void *w, int revents)
554	{	819	{
555	W w_ = (W)w;	820	W w_ = (W)w;
…		…
564	pendings [pri][w_->pending - 1].w = w_;	829	pendings [pri][w_->pending - 1].w = w_;
565	pendings [pri][w_->pending - 1].events = revents;	830	pendings [pri][w_->pending - 1].events = revents;
566	}	831	}
567	}	832	}
568		833
569	void inline_speed	834	inline_speed void
		835	feed_reverse (EV_P_ W w)
		836	{
		837	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		838	rfeeds [rfeedcnt++] = w;
		839	}
		840
		841	inline_size void
		842	feed_reverse_done (EV_P_ int revents)
		843	{
		844	do
		845	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		846	while (rfeedcnt);
		847	}
		848
		849	inline_speed void
570	queue_events (EV_P_ W *events, int eventcnt, int type)	850	queue_events (EV_P_ W *events, int eventcnt, int type)
571	{	851	{
572	int i;	852	int i;
573		853
574	for (i = 0; i < eventcnt; ++i)	854	for (i = 0; i < eventcnt; ++i)
575	ev_feed_event (EV_A_ events [i], type);	855	ev_feed_event (EV_A_ events [i], type);
576	}	856	}
577		857
578	/*****************************************************************************/	858	/*****************************************************************************/
579		859
580	void inline_size	860	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)	861	fd_event_nc (EV_P_ int fd, int revents)
595	{	862	{
596	ANFD *anfd = anfds + fd;	863	ANFD *anfd = anfds + fd;
597	ev_io *w;	864	ev_io *w;
598		865
599	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	866	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
603	if (ev)	870	if (ev)
604	ev_feed_event (EV_A_ (W)w, ev);	871	ev_feed_event (EV_A_ (W)w, ev);
605	}	872	}
606	}	873	}
607		874
		875	/* do not submit kernel events for fds that have reify set */
		876	/* because that means they changed while we were polling for new events */
		877	inline_speed void
		878	fd_event (EV_P_ int fd, int revents)
		879	{
		880	ANFD *anfd = anfds + fd;
		881
		882	if (expect_true (!anfd->reify))
		883	fd_event_nc (EV_A_ fd, revents);
		884	}
		885
608	void	886	void
609	ev_feed_fd_event (EV_P_ int fd, int revents)	887	ev_feed_fd_event (EV_P_ int fd, int revents)
610	{	888	{
611	if (fd >= 0 && fd < anfdmax)	889	if (fd >= 0 && fd < anfdmax)
612	fd_event (EV_A_ fd, revents);	890	fd_event_nc (EV_A_ fd, revents);
613	}	891	}
614		892
615	void inline_size	893	/* make sure the external fd watch events are in-sync */
		894	/* with the kernel/libev internal state */
		895	inline_size void
616	fd_reify (EV_P)	896	fd_reify (EV_P)
617	{	897	{
618	int i;	898	int i;
619		899
620	for (i = 0; i < fdchangecnt; ++i)	900	for (i = 0; i < fdchangecnt; ++i)
…		…
629	events |= (unsigned char)w->events;	909	events |= (unsigned char)w->events;
630		910
631	#if EV_SELECT_IS_WINSOCKET	911	#if EV_SELECT_IS_WINSOCKET
632	if (events)	912	if (events)
633	{	913	{
634	unsigned long argp;	914	unsigned long arg;
635	#ifdef EV_FD_TO_WIN32_HANDLE
636	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	915	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));	916	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
641	}	917	}
642	#endif	918	#endif
643		919
644	{	920	{
645	unsigned char o_events = anfd->events;	921	unsigned char o_events = anfd->events;
646	unsigned char o_reify = anfd->reify;	922	unsigned char o_reify = anfd->reify;
647		923
648	anfd->reify = 0;	924	anfd->reify = 0;
649	anfd->events = events;	925	anfd->events = events;
650		926
651	if (o_events != events || o_reify & EV_IOFDSET)	927	if (o_events != events || o_reify & EV__IOFDSET)
652	backend_modify (EV_A_ fd, o_events, events);	928	backend_modify (EV_A_ fd, o_events, events);
653	}	929	}
654	}	930	}
655		931
656	fdchangecnt = 0;	932	fdchangecnt = 0;
657	}	933	}
658		934
659	void inline_size	935	/* something about the given fd changed */
		936	inline_size void
660	fd_change (EV_P_ int fd, int flags)	937	fd_change (EV_P_ int fd, int flags)
661	{	938	{
662	unsigned char reify = anfds [fd].reify;	939	unsigned char reify = anfds [fd].reify;
663	anfds [fd].reify |= flags;	940	anfds [fd].reify |= flags;
664		941
…		…
668	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	945	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
669	fdchanges [fdchangecnt - 1] = fd;	946	fdchanges [fdchangecnt - 1] = fd;
670	}	947	}
671	}	948	}
672		949
673	void inline_speed	950	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		951	inline_speed void
674	fd_kill (EV_P_ int fd)	952	fd_kill (EV_P_ int fd)
675	{	953	{
676	ev_io *w;	954	ev_io *w;
677		955
678	while ((w = (ev_io *)anfds [fd].head))	956	while ((w = (ev_io *)anfds [fd].head))
…		…
680	ev_io_stop (EV_A_ w);	958	ev_io_stop (EV_A_ w);
681	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	959	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
682	}	960	}
683	}	961	}
684		962
685	int inline_size	963	/* check whether the given fd is atcually valid, for error recovery */
		964	inline_size int
686	fd_valid (int fd)	965	fd_valid (int fd)
687	{	966	{
688	#ifdef _WIN32	967	#ifdef _WIN32
689	return _get_osfhandle (fd) != -1;	968	return _get_osfhandle (fd) != -1;
690	#else	969	#else
…		…
698	{	977	{
699	int fd;	978	int fd;
700		979
701	for (fd = 0; fd < anfdmax; ++fd)	980	for (fd = 0; fd < anfdmax; ++fd)
702	if (anfds [fd].events)	981	if (anfds [fd].events)
703	if (!fd_valid (fd) == -1 && errno == EBADF)	982	if (!fd_valid (fd) && errno == EBADF)
704	fd_kill (EV_A_ fd);	983	fd_kill (EV_A_ fd);
705	}	984	}
706		985
707	/* called on ENOMEM in select/poll to kill some fds and retry */	986	/* called on ENOMEM in select/poll to kill some fds and retry */
708	static void noinline	987	static void noinline
…		…
712		991
713	for (fd = anfdmax; fd--; )	992	for (fd = anfdmax; fd--; )
714	if (anfds [fd].events)	993	if (anfds [fd].events)
715	{	994	{
716	fd_kill (EV_A_ fd);	995	fd_kill (EV_A_ fd);
717	return;	996	break;
718	}	997	}
719	}	998	}
720		999
721	/* usually called after fork if backend needs to re-arm all fds from scratch */	1000	/* usually called after fork if backend needs to re-arm all fds from scratch */
722	static void noinline	1001	static void noinline
…		…
726		1005
727	for (fd = 0; fd < anfdmax; ++fd)	1006	for (fd = 0; fd < anfdmax; ++fd)
728	if (anfds [fd].events)	1007	if (anfds [fd].events)
729	{	1008	{
730	anfds [fd].events = 0;	1009	anfds [fd].events = 0;
		1010	anfds [fd].emask = 0;
731	fd_change (EV_A_ fd, EV_IOFDSET | 1);	1011	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
732	}	1012	}
733	}	1013	}
734		1014
735	/*****************************************************************************/	1015	/*****************************************************************************/
736		1016
737	void inline_speed	1017	/*
738	upheap (WT *heap, int k)	1018	* the heap functions want a real array index. array index 0 uis guaranteed to not
739	{	1019	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
740	WT w = heap [k];	1020	* the branching factor of the d-tree.
		1021	*/
741		1022
742	while (k)	1023	/*
743	{	1024	* at the moment we allow libev the luxury of two heaps,
744	int p = (k - 1) >> 1;	1025	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		1026	* which is more cache-efficient.
		1027	* the difference is about 5% with 50000+ watchers.
		1028	*/
		1029	#if EV_USE_4HEAP
745		1030
746	if (heap [p]->at <= w->at)	1031	#define DHEAP 4
		1032	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		1033	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		1034	#define UPHEAP_DONE(p,k) ((p) == (k))
		1035
		1036	/* away from the root */
		1037	inline_speed void
		1038	downheap (ANHE *heap, int N, int k)
		1039	{
		1040	ANHE he = heap [k];
		1041	ANHE *E = heap + N + HEAP0;
		1042
		1043	for (;;)
		1044	{
		1045	ev_tstamp minat;
		1046	ANHE *minpos;
		1047	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
		1048
		1049	/* find minimum child */
		1050	if (expect_true (pos + DHEAP - 1 < E))
		1051	{
		1052	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1053	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1054	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1055	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1056	}
		1057	else if (pos < E)
		1058	{
		1059	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1060	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1061	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1062	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1063	}
		1064	else
747	break;	1065	break;
748		1066
		1067	if (ANHE_at (he) <= minat)
		1068	break;
		1069
		1070	heap [k] = *minpos;
		1071	ev_active (ANHE_w (*minpos)) = k;
		1072
		1073	k = minpos - heap;
		1074	}
		1075
		1076	heap [k] = he;
		1077	ev_active (ANHE_w (he)) = k;
		1078	}
		1079
		1080	#else /* 4HEAP */
		1081
		1082	#define HEAP0 1
		1083	#define HPARENT(k) ((k) >> 1)
		1084	#define UPHEAP_DONE(p,k) (!(p))
		1085
		1086	/* away from the root */
		1087	inline_speed void
		1088	downheap (ANHE *heap, int N, int k)
		1089	{
		1090	ANHE he = heap [k];
		1091
		1092	for (;;)
		1093	{
		1094	int c = k << 1;
		1095
		1096	if (c >= N + HEAP0)
		1097	break;
		1098
		1099	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		1100	? 1 : 0;
		1101
		1102	if (ANHE_at (he) <= ANHE_at (heap [c]))
		1103	break;
		1104
		1105	heap [k] = heap [c];
		1106	ev_active (ANHE_w (heap [k])) = k;
		1107
		1108	k = c;
		1109	}
		1110
		1111	heap [k] = he;
		1112	ev_active (ANHE_w (he)) = k;
		1113	}
		1114	#endif
		1115
		1116	/* towards the root */
		1117	inline_speed void
		1118	upheap (ANHE *heap, int k)
		1119	{
		1120	ANHE he = heap [k];
		1121
		1122	for (;;)
		1123	{
		1124	int p = HPARENT (k);
		1125
		1126	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1127	break;
		1128
749	heap [k] = heap [p];	1129	heap [k] = heap [p];
750	((W)heap [k])->active = k + 1;	1130	ev_active (ANHE_w (heap [k])) = k;
751	k = p;	1131	k = p;
752	}	1132	}
753		1133
754	heap [k] = w;	1134	heap [k] = he;
755	((W)heap [k])->active = k + 1;	1135	ev_active (ANHE_w (he)) = k;
756	}	1136	}
757		1137
758	void inline_speed	1138	/* move an element suitably so it is in a correct place */
759	downheap (WT *heap, int N, int k)	1139	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)	1140	adjustheap (ANHE *heap, int N, int k)
788	{	1141	{
		1142	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
789	upheap (heap, k);	1143	upheap (heap, k);
		1144	else
790	downheap (heap, N, k);	1145	downheap (heap, N, k);
		1146	}
		1147
		1148	/* rebuild the heap: this function is used only once and executed rarely */
		1149	inline_size void
		1150	reheap (ANHE *heap, int N)
		1151	{
		1152	int i;
		1153
		1154	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1155	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1156	for (i = 0; i < N; ++i)
		1157	upheap (heap, i + HEAP0);
791	}	1158	}
792		1159
793	/*****************************************************************************/	1160	/*****************************************************************************/
794		1161
		1162	/* associate signal watchers to a signal signal */
795	typedef struct	1163	typedef struct
796	{	1164	{
		1165	EV_ATOMIC_T pending;
		1166	#if EV_MULTIPLICITY
		1167	EV_P;
		1168	#endif
797	WL head;	1169	WL head;
798	EV_ATOMIC_T gotsig;
799	} ANSIG;	1170	} ANSIG;
800		1171
801	static ANSIG *signals;	1172	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		1173
818	/*****************************************************************************/	1174	/*****************************************************************************/
819		1175
820	void inline_speed	1176	/* used to prepare libev internal fd's */
		1177	/* this is not fork-safe */
		1178	inline_speed void
821	fd_intern (int fd)	1179	fd_intern (int fd)
822	{	1180	{
823	#ifdef _WIN32	1181	#ifdef _WIN32
824	int arg = 1;	1182	unsigned long arg = 1;
825	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1183	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
826	#else	1184	#else
827	fcntl (fd, F_SETFD, FD_CLOEXEC);	1185	fcntl (fd, F_SETFD, FD_CLOEXEC);
828	fcntl (fd, F_SETFL, O_NONBLOCK);	1186	fcntl (fd, F_SETFL, O_NONBLOCK);
829	#endif	1187	#endif
830	}	1188	}
831		1189
832	static void noinline	1190	static void noinline
833	evpipe_init (EV_P)	1191	evpipe_init (EV_P)
834	{	1192	{
835	if (!ev_is_active (&pipeev))	1193	if (!ev_is_active (&pipe_w))
836	{	1194	{
837	#if EV_USE_EVENTFD	1195	#if EV_USE_EVENTFD
		1196	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1197	if (evfd < 0 && errno == EINVAL)
838	if ((evfd = eventfd (0, 0)) >= 0)	1198	evfd = eventfd (0, 0);
		1199
		1200	if (evfd >= 0)
839	{	1201	{
840	evpipe [0] = -1;	1202	evpipe [0] = -1;
841	fd_intern (evfd);	1203	fd_intern (evfd); /* doing it twice doesn't hurt */
842	ev_io_set (&pipeev, evfd, EV_READ);	1204	ev_io_set (&pipe_w, evfd, EV_READ);
843	}	1205	}
844	else	1206	else
845	#endif	1207	#endif
846	{	1208	{
847	while (pipe (evpipe))	1209	while (pipe (evpipe))
848	syserr ("(libev) error creating signal/async pipe");	1210	ev_syserr ("(libev) error creating signal/async pipe");
849		1211
850	fd_intern (evpipe [0]);	1212	fd_intern (evpipe [0]);
851	fd_intern (evpipe [1]);	1213	fd_intern (evpipe [1]);
852	ev_io_set (&pipeev, evpipe [0], EV_READ);	1214	ev_io_set (&pipe_w, evpipe [0], EV_READ);
853	}	1215	}
854		1216
855	ev_io_start (EV_A_ &pipeev);	1217	ev_io_start (EV_A_ &pipe_w);
856	ev_unref (EV_A); /* watcher should not keep loop alive */	1218	ev_unref (EV_A); /* watcher should not keep loop alive */
857	}	1219	}
858	}	1220	}
859		1221
860	void inline_size	1222	inline_size void
861	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1223	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
862	{	1224	{
863	if (!*flag)	1225	if (!*flag)
864	{	1226	{
865	int old_errno = errno; /* save errno because write might clobber it */	1227	int old_errno = errno; /* save errno because write might clobber it */
…		…
878		1240
879	errno = old_errno;	1241	errno = old_errno;
880	}	1242	}
881	}	1243	}
882		1244
		1245	/* called whenever the libev signal pipe */
		1246	/* got some events (signal, async) */
883	static void	1247	static void
884	pipecb (EV_P_ ev_io *iow, int revents)	1248	pipecb (EV_P_ ev_io *iow, int revents)
885	{	1249	{
		1250	int i;
		1251
886	#if EV_USE_EVENTFD	1252	#if EV_USE_EVENTFD
887	if (evfd >= 0)	1253	if (evfd >= 0)
888	{	1254	{
889	uint64_t counter = 1;	1255	uint64_t counter;
890	read (evfd, &counter, sizeof (uint64_t));	1256	read (evfd, &counter, sizeof (uint64_t));
891	}	1257	}
892	else	1258	else
893	#endif	1259	#endif
894	{	1260	{
895	char dummy;	1261	char dummy;
896	read (evpipe [0], &dummy, 1);	1262	read (evpipe [0], &dummy, 1);
897	}	1263	}
898		1264
899	if (gotsig && ev_is_default_loop (EV_A))	1265	if (sig_pending)
900	{	1266	{
901	int signum;	1267	sig_pending = 0;
902	gotsig = 0;
903		1268
904	for (signum = signalmax; signum--; )	1269	for (i = EV_NSIG - 1; i--; )
905	if (signals [signum].gotsig)	1270	if (expect_false (signals [i].pending))
906	ev_feed_signal_event (EV_A_ signum + 1);	1271	ev_feed_signal_event (EV_A_ i + 1);
907	}	1272	}
908		1273
909	#if EV_ASYNC_ENABLE	1274	#if EV_ASYNC_ENABLE
910	if (gotasync)	1275	if (async_pending)
911	{	1276	{
912	int i;	1277	async_pending = 0;
913	gotasync = 0;
914		1278
915	for (i = asynccnt; i--; )	1279	for (i = asynccnt; i--; )
916	if (asyncs [i]->sent)	1280	if (asyncs [i]->sent)
917	{	1281	{
918	asyncs [i]->sent = 0;	1282	asyncs [i]->sent = 0;
…		…
926		1290
927	static void	1291	static void
928	ev_sighandler (int signum)	1292	ev_sighandler (int signum)
929	{	1293	{
930	#if EV_MULTIPLICITY	1294	#if EV_MULTIPLICITY
931	struct ev_loop *loop = &default_loop_struct;	1295	EV_P = signals [signum - 1].loop;
932	#endif	1296	#endif
933		1297
934	#if _WIN32	1298	#if _WIN32
935	signal (signum, ev_sighandler);	1299	signal (signum, ev_sighandler);
936	#endif	1300	#endif
937		1301
938	signals [signum - 1].gotsig = 1;	1302	signals [signum - 1].pending = 1;
939	evpipe_write (EV_A_ &gotsig);	1303	evpipe_write (EV_A_ &sig_pending);
940	}	1304	}
941		1305
942	void noinline	1306	void noinline
943	ev_feed_signal_event (EV_P_ int signum)	1307	ev_feed_signal_event (EV_P_ int signum)
944	{	1308	{
945	WL w;	1309	WL w;
946		1310
		1311	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1312	return;
		1313
		1314	--signum;
		1315
947	#if EV_MULTIPLICITY	1316	#if EV_MULTIPLICITY
948	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1317	/* it is permissible to try to feed a signal to the wrong loop */
949	#endif	1318	/* or, likely more useful, feeding a signal nobody is waiting for */
950		1319
951	--signum;	1320	if (expect_false (signals [signum].loop != EV_A))
952
953	if (signum < 0 || signum >= signalmax)
954	return;	1321	return;
		1322	#endif
955		1323
956	signals [signum].gotsig = 0;	1324	signals [signum].pending = 0;
957		1325
958	for (w = signals [signum].head; w; w = w->next)	1326	for (w = signals [signum].head; w; w = w->next)
959	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1327	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
960	}	1328	}
961		1329
		1330	#if EV_USE_SIGNALFD
		1331	static void
		1332	sigfdcb (EV_P_ ev_io *iow, int revents)
		1333	{
		1334	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1335
		1336	for (;;)
		1337	{
		1338	ssize_t res = read (sigfd, si, sizeof (si));
		1339
		1340	/* not ISO-C, as res might be -1, but works with SuS */
		1341	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1342	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1343
		1344	if (res < (ssize_t)sizeof (si))
		1345	break;
		1346	}
		1347	}
		1348	#endif
		1349
962	/*****************************************************************************/	1350	/*****************************************************************************/
963		1351
964	static WL childs [EV_PID_HASHSIZE];	1352	static WL childs [EV_PID_HASHSIZE];
965		1353
966	#ifndef _WIN32	1354	#ifndef _WIN32
…		…
969		1357
970	#ifndef WIFCONTINUED	1358	#ifndef WIFCONTINUED
971	# define WIFCONTINUED(status) 0	1359	# define WIFCONTINUED(status) 0
972	#endif	1360	#endif
973		1361
974	void inline_speed	1362	/* handle a single child status event */
		1363	inline_speed void
975	child_reap (EV_P_ int chain, int pid, int status)	1364	child_reap (EV_P_ int chain, int pid, int status)
976	{	1365	{
977	ev_child *w;	1366	ev_child *w;
978	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1367	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
979		1368
…		…
992		1381
993	#ifndef WCONTINUED	1382	#ifndef WCONTINUED
994	# define WCONTINUED 0	1383	# define WCONTINUED 0
995	#endif	1384	#endif
996		1385
		1386	/* called on sigchld etc., calls waitpid */
997	static void	1387	static void
998	childcb (EV_P_ ev_signal *sw, int revents)	1388	childcb (EV_P_ ev_signal *sw, int revents)
999	{	1389	{
1000	int pid, status;	1390	int pid, status;
1001		1391
…		…
1082	/* kqueue is borked on everything but netbsd apparently */	1472	/* kqueue is borked on everything but netbsd apparently */
1083	/* it usually doesn't work correctly on anything but sockets and pipes */	1473	/* it usually doesn't work correctly on anything but sockets and pipes */
1084	flags &= ~EVBACKEND_KQUEUE;	1474	flags &= ~EVBACKEND_KQUEUE;
1085	#endif	1475	#endif
1086	#ifdef __APPLE__	1476	#ifdef __APPLE__
1087	// flags &= ~EVBACKEND_KQUEUE; for documentation	1477	/* only select works correctly on that "unix-certified" platform */
1088	flags &= ~EVBACKEND_POLL;	1478	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1479	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1089	#endif	1480	#endif
1090		1481
1091	return flags;	1482	return flags;
1092	}	1483	}
1093		1484
…		…
1107	ev_backend (EV_P)	1498	ev_backend (EV_P)
1108	{	1499	{
1109	return backend;	1500	return backend;
1110	}	1501	}
1111		1502
		1503	#if EV_MINIMAL < 2
1112	unsigned int	1504	unsigned int
1113	ev_loop_count (EV_P)	1505	ev_loop_count (EV_P)
1114	{	1506	{
1115	return loop_count;	1507	return loop_count;
1116	}	1508	}
1117		1509
		1510	unsigned int
		1511	ev_loop_depth (EV_P)
		1512	{
		1513	return loop_depth;
		1514	}
		1515
1118	void	1516	void
1119	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1517	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1120	{	1518	{
1121	io_blocktime = interval;	1519	io_blocktime = interval;
1122	}	1520	}
…		…
1125	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1523	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1126	{	1524	{
1127	timeout_blocktime = interval;	1525	timeout_blocktime = interval;
1128	}	1526	}
1129		1527
		1528	void
		1529	ev_set_userdata (EV_P_ void *data)
		1530	{
		1531	userdata = data;
		1532	}
		1533
		1534	void *
		1535	ev_userdata (EV_P)
		1536	{
		1537	return userdata;
		1538	}
		1539
		1540	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1541	{
		1542	invoke_cb = invoke_pending_cb;
		1543	}
		1544
		1545	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1546	{
		1547	release_cb = release;
		1548	acquire_cb = acquire;
		1549	}
		1550	#endif
		1551
		1552	/* initialise a loop structure, must be zero-initialised */
1130	static void noinline	1553	static void noinline
1131	loop_init (EV_P_ unsigned int flags)	1554	loop_init (EV_P_ unsigned int flags)
1132	{	1555	{
1133	if (!backend)	1556	if (!backend)
1134	{	1557	{
		1558	#if EV_USE_REALTIME
		1559	if (!have_realtime)
		1560	{
		1561	struct timespec ts;
		1562
		1563	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1564	have_realtime = 1;
		1565	}
		1566	#endif
		1567
1135	#if EV_USE_MONOTONIC	1568	#if EV_USE_MONOTONIC
		1569	if (!have_monotonic)
1136	{	1570	{
1137	struct timespec ts;	1571	struct timespec ts;
		1572
1138	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1573	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1139	have_monotonic = 1;	1574	have_monotonic = 1;
1140	}	1575	}
1141	#endif	1576	#endif
		1577
		1578	/* pid check not overridable via env */
		1579	#ifndef _WIN32
		1580	if (flags & EVFLAG_FORKCHECK)
		1581	curpid = getpid ();
		1582	#endif
		1583
		1584	if (!(flags & EVFLAG_NOENV)
		1585	&& !enable_secure ()
		1586	&& getenv ("LIBEV_FLAGS"))
		1587	flags = atoi (getenv ("LIBEV_FLAGS"));
1142		1588
1143	ev_rt_now = ev_time ();	1589	ev_rt_now = ev_time ();
1144	mn_now = get_clock ();	1590	mn_now = get_clock ();
1145	now_floor = mn_now;	1591	now_floor = mn_now;
1146	rtmn_diff = ev_rt_now - mn_now;	1592	rtmn_diff = ev_rt_now - mn_now;
		1593	#if EV_MINIMAL < 2
		1594	invoke_cb = ev_invoke_pending;
		1595	#endif
1147		1596
1148	io_blocktime = 0.;	1597	io_blocktime = 0.;
1149	timeout_blocktime = 0.;	1598	timeout_blocktime = 0.;
1150	backend = 0;	1599	backend = 0;
1151	backend_fd = -1;	1600	backend_fd = -1;
1152	gotasync = 0;	1601	sig_pending = 0;
		1602	#if EV_ASYNC_ENABLE
		1603	async_pending = 0;
		1604	#endif
1153	#if EV_USE_INOTIFY	1605	#if EV_USE_INOTIFY
1154	fs_fd = -2;	1606	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1155	#endif	1607	#endif
1156		1608	#if EV_USE_SIGNALFD
1157	/* pid check not overridable via env */	1609	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1158	#ifndef _WIN32
1159	if (flags & EVFLAG_FORKCHECK)
1160	curpid = getpid ();
1161	#endif	1610	#endif
1162		1611
1163	if (!(flags & EVFLAG_NOENV)
1164	&& !enable_secure ()
1165	&& getenv ("LIBEV_FLAGS"))
1166	flags = atoi (getenv ("LIBEV_FLAGS"));
1167
1168	if (!(flags & 0x0000ffffUL))	1612	if (!(flags & 0x0000ffffU))
1169	flags |= ev_recommended_backends ();	1613	flags |= ev_recommended_backends ();
1170		1614
1171	#if EV_USE_PORT	1615	#if EV_USE_PORT
1172	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1616	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1173	#endif	1617	#endif
…		…
1182	#endif	1626	#endif
1183	#if EV_USE_SELECT	1627	#if EV_USE_SELECT
1184	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1628	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1185	#endif	1629	#endif
1186		1630
		1631	ev_prepare_init (&pending_w, pendingcb);
		1632
1187	ev_init (&pipeev, pipecb);	1633	ev_init (&pipe_w, pipecb);
1188	ev_set_priority (&pipeev, EV_MAXPRI);	1634	ev_set_priority (&pipe_w, EV_MAXPRI);
1189	}	1635	}
1190	}	1636	}
1191		1637
		1638	/* free up a loop structure */
1192	static void noinline	1639	static void noinline
1193	loop_destroy (EV_P)	1640	loop_destroy (EV_P)
1194	{	1641	{
1195	int i;	1642	int i;
1196		1643
1197	if (ev_is_active (&pipeev))	1644	if (ev_is_active (&pipe_w))
1198	{	1645	{
1199	ev_ref (EV_A); /* signal watcher */	1646	/*ev_ref (EV_A);*/
1200	ev_io_stop (EV_A_ &pipeev);	1647	/*ev_io_stop (EV_A_ &pipe_w);*/
1201		1648
1202	#if EV_USE_EVENTFD	1649	#if EV_USE_EVENTFD
1203	if (evfd >= 0)	1650	if (evfd >= 0)
1204	close (evfd);	1651	close (evfd);
1205	#endif	1652	#endif
1206		1653
1207	if (evpipe [0] >= 0)	1654	if (evpipe [0] >= 0)
1208	{	1655	{
1209	close (evpipe [0]);	1656	EV_WIN32_CLOSE_FD (evpipe [0]);
1210	close (evpipe [1]);	1657	EV_WIN32_CLOSE_FD (evpipe [1]);
1211	}	1658	}
1212	}	1659	}
		1660
		1661	#if EV_USE_SIGNALFD
		1662	if (ev_is_active (&sigfd_w))
		1663	close (sigfd);
		1664	#endif
1213		1665
1214	#if EV_USE_INOTIFY	1666	#if EV_USE_INOTIFY
1215	if (fs_fd >= 0)	1667	if (fs_fd >= 0)
1216	close (fs_fd);	1668	close (fs_fd);
1217	#endif	1669	#endif
…		…
1241	#if EV_IDLE_ENABLE	1693	#if EV_IDLE_ENABLE
1242	array_free (idle, [i]);	1694	array_free (idle, [i]);
1243	#endif	1695	#endif
1244	}	1696	}
1245		1697
1246	ev_free (anfds); anfdmax = 0;	1698	ev_free (anfds); anfds = 0; anfdmax = 0;
1247		1699
1248	/* have to use the microsoft-never-gets-it-right macro */	1700	/* have to use the microsoft-never-gets-it-right macro */
		1701	array_free (rfeed, EMPTY);
1249	array_free (fdchange, EMPTY);	1702	array_free (fdchange, EMPTY);
1250	array_free (timer, EMPTY);	1703	array_free (timer, EMPTY);
1251	#if EV_PERIODIC_ENABLE	1704	#if EV_PERIODIC_ENABLE
1252	array_free (periodic, EMPTY);	1705	array_free (periodic, EMPTY);
1253	#endif	1706	#endif
…		…
1261	#endif	1714	#endif
1262		1715
1263	backend = 0;	1716	backend = 0;
1264	}	1717	}
1265		1718
		1719	#if EV_USE_INOTIFY
1266	void inline_size infy_fork (EV_P);	1720	inline_size void infy_fork (EV_P);
		1721	#endif
1267		1722
1268	void inline_size	1723	inline_size void
1269	loop_fork (EV_P)	1724	loop_fork (EV_P)
1270	{	1725	{
1271	#if EV_USE_PORT	1726	#if EV_USE_PORT
1272	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1727	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1273	#endif	1728	#endif
…		…
1279	#endif	1734	#endif
1280	#if EV_USE_INOTIFY	1735	#if EV_USE_INOTIFY
1281	infy_fork (EV_A);	1736	infy_fork (EV_A);
1282	#endif	1737	#endif
1283		1738
1284	if (ev_is_active (&pipeev))	1739	if (ev_is_active (&pipe_w))
1285	{	1740	{
1286	/* this "locks" the handlers against writing to the pipe */	1741	/* this "locks" the handlers against writing to the pipe */
1287	/* while we modify the fd vars */	1742	/* while we modify the fd vars */
1288	gotsig = 1;	1743	sig_pending = 1;
1289	#if EV_ASYNC_ENABLE	1744	#if EV_ASYNC_ENABLE
1290	gotasync = 1;	1745	async_pending = 1;
1291	#endif	1746	#endif
1292		1747
1293	ev_ref (EV_A);	1748	ev_ref (EV_A);
1294	ev_io_stop (EV_A_ &pipeev);	1749	ev_io_stop (EV_A_ &pipe_w);
1295		1750
1296	#if EV_USE_EVENTFD	1751	#if EV_USE_EVENTFD
1297	if (evfd >= 0)	1752	if (evfd >= 0)
1298	close (evfd);	1753	close (evfd);
1299	#endif	1754	#endif
1300		1755
1301	if (evpipe [0] >= 0)	1756	if (evpipe [0] >= 0)
1302	{	1757	{
1303	close (evpipe [0]);	1758	EV_WIN32_CLOSE_FD (evpipe [0]);
1304	close (evpipe [1]);	1759	EV_WIN32_CLOSE_FD (evpipe [1]);
1305	}	1760	}
1306		1761
1307	evpipe_init (EV_A);	1762	evpipe_init (EV_A);
1308	/* now iterate over everything, in case we missed something */	1763	/* now iterate over everything, in case we missed something */
1309	pipecb (EV_A_ &pipeev, EV_READ);	1764	pipecb (EV_A_ &pipe_w, EV_READ);
1310	}	1765	}
1311		1766
1312	postfork = 0;	1767	postfork = 0;
1313	}	1768	}
1314		1769
1315	#if EV_MULTIPLICITY	1770	#if EV_MULTIPLICITY
		1771
1316	struct ev_loop *	1772	struct ev_loop *
1317	ev_loop_new (unsigned int flags)	1773	ev_loop_new (unsigned int flags)
1318	{	1774	{
1319	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1775	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1320		1776
1321	memset (loop, 0, sizeof (struct ev_loop));	1777	memset (EV_A, 0, sizeof (struct ev_loop));
1322
1323	loop_init (EV_A_ flags);	1778	loop_init (EV_A_ flags);
1324		1779
1325	if (ev_backend (EV_A))	1780	if (ev_backend (EV_A))
1326	return loop;	1781	return EV_A;
1327		1782
1328	return 0;	1783	return 0;
1329	}	1784	}
1330		1785
1331	void	1786	void
…		…
1338	void	1793	void
1339	ev_loop_fork (EV_P)	1794	ev_loop_fork (EV_P)
1340	{	1795	{
1341	postfork = 1; /* must be in line with ev_default_fork */	1796	postfork = 1; /* must be in line with ev_default_fork */
1342	}	1797	}
		1798	#endif /* multiplicity */
1343		1799
		1800	#if EV_VERIFY
		1801	static void noinline
		1802	verify_watcher (EV_P_ W w)
		1803	{
		1804	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1805
		1806	if (w->pending)
		1807	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1808	}
		1809
		1810	static void noinline
		1811	verify_heap (EV_P_ ANHE *heap, int N)
		1812	{
		1813	int i;
		1814
		1815	for (i = HEAP0; i < N + HEAP0; ++i)
		1816	{
		1817	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1818	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1819	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1820
		1821	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1822	}
		1823	}
		1824
		1825	static void noinline
		1826	array_verify (EV_P_ W *ws, int cnt)
		1827	{
		1828	while (cnt--)
		1829	{
		1830	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1831	verify_watcher (EV_A_ ws [cnt]);
		1832	}
		1833	}
		1834	#endif
		1835
		1836	#if EV_MINIMAL < 2
		1837	void
		1838	ev_loop_verify (EV_P)
		1839	{
		1840	#if EV_VERIFY
		1841	int i;
		1842	WL w;
		1843
		1844	assert (activecnt >= -1);
		1845
		1846	assert (fdchangemax >= fdchangecnt);
		1847	for (i = 0; i < fdchangecnt; ++i)
		1848	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1849
		1850	assert (anfdmax >= 0);
		1851	for (i = 0; i < anfdmax; ++i)
		1852	for (w = anfds [i].head; w; w = w->next)
		1853	{
		1854	verify_watcher (EV_A_ (W)w);
		1855	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1856	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1857	}
		1858
		1859	assert (timermax >= timercnt);
		1860	verify_heap (EV_A_ timers, timercnt);
		1861
		1862	#if EV_PERIODIC_ENABLE
		1863	assert (periodicmax >= periodiccnt);
		1864	verify_heap (EV_A_ periodics, periodiccnt);
		1865	#endif
		1866
		1867	for (i = NUMPRI; i--; )
		1868	{
		1869	assert (pendingmax [i] >= pendingcnt [i]);
		1870	#if EV_IDLE_ENABLE
		1871	assert (idleall >= 0);
		1872	assert (idlemax [i] >= idlecnt [i]);
		1873	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1874	#endif
		1875	}
		1876
		1877	#if EV_FORK_ENABLE
		1878	assert (forkmax >= forkcnt);
		1879	array_verify (EV_A_ (W *)forks, forkcnt);
		1880	#endif
		1881
		1882	#if EV_ASYNC_ENABLE
		1883	assert (asyncmax >= asynccnt);
		1884	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1885	#endif
		1886
		1887	assert (preparemax >= preparecnt);
		1888	array_verify (EV_A_ (W *)prepares, preparecnt);
		1889
		1890	assert (checkmax >= checkcnt);
		1891	array_verify (EV_A_ (W *)checks, checkcnt);
		1892
		1893	# if 0
		1894	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1895	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		1896	# endif
		1897	#endif
		1898	}
1344	#endif	1899	#endif
1345		1900
1346	#if EV_MULTIPLICITY	1901	#if EV_MULTIPLICITY
1347	struct ev_loop *	1902	struct ev_loop *
1348	ev_default_loop_init (unsigned int flags)	1903	ev_default_loop_init (unsigned int flags)
…		…
1352	#endif	1907	#endif
1353	{	1908	{
1354	if (!ev_default_loop_ptr)	1909	if (!ev_default_loop_ptr)
1355	{	1910	{
1356	#if EV_MULTIPLICITY	1911	#if EV_MULTIPLICITY
1357	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1912	EV_P = ev_default_loop_ptr = &default_loop_struct;
1358	#else	1913	#else
1359	ev_default_loop_ptr = 1;	1914	ev_default_loop_ptr = 1;
1360	#endif	1915	#endif
1361		1916
1362	loop_init (EV_A_ flags);	1917	loop_init (EV_A_ flags);
…		…
1379		1934
1380	void	1935	void
1381	ev_default_destroy (void)	1936	ev_default_destroy (void)
1382	{	1937	{
1383	#if EV_MULTIPLICITY	1938	#if EV_MULTIPLICITY
1384	struct ev_loop *loop = ev_default_loop_ptr;	1939	EV_P = ev_default_loop_ptr;
1385	#endif	1940	#endif
		1941
		1942	ev_default_loop_ptr = 0;
1386		1943
1387	#ifndef _WIN32	1944	#ifndef _WIN32
1388	ev_ref (EV_A); /* child watcher */	1945	ev_ref (EV_A); /* child watcher */
1389	ev_signal_stop (EV_A_ &childev);	1946	ev_signal_stop (EV_A_ &childev);
1390	#endif	1947	#endif
…		…
1394		1951
1395	void	1952	void
1396	ev_default_fork (void)	1953	ev_default_fork (void)
1397	{	1954	{
1398	#if EV_MULTIPLICITY	1955	#if EV_MULTIPLICITY
1399	struct ev_loop *loop = ev_default_loop_ptr;	1956	EV_P = ev_default_loop_ptr;
1400	#endif	1957	#endif
1401		1958
1402	if (backend)
1403	postfork = 1; /* must be in line with ev_loop_fork */	1959	postfork = 1; /* must be in line with ev_loop_fork */
1404	}	1960	}
1405		1961
1406	/*****************************************************************************/	1962	/*****************************************************************************/
1407		1963
1408	void	1964	void
1409	ev_invoke (EV_P_ void *w, int revents)	1965	ev_invoke (EV_P_ void *w, int revents)
1410	{	1966	{
1411	EV_CB_INVOKE ((W)w, revents);	1967	EV_CB_INVOKE ((W)w, revents);
1412	}	1968	}
1413		1969
1414	void inline_speed	1970	unsigned int
1415	call_pending (EV_P)	1971	ev_pending_count (EV_P)
		1972	{
		1973	int pri;
		1974	unsigned int count = 0;
		1975
		1976	for (pri = NUMPRI; pri--; )
		1977	count += pendingcnt [pri];
		1978
		1979	return count;
		1980	}
		1981
		1982	void noinline
		1983	ev_invoke_pending (EV_P)
1416	{	1984	{
1417	int pri;	1985	int pri;
1418		1986
1419	for (pri = NUMPRI; pri--; )	1987	for (pri = NUMPRI; pri--; )
1420	while (pendingcnt [pri])	1988	while (pendingcnt [pri])
1421	{	1989	{
1422	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1990	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1423		1991
1424	if (expect_true (p->w))
1425	{
1426	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1992	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1993	/* ^ this is no longer true, as pending_w could be here */
1427		1994
1428	p->w->pending = 0;	1995	p->w->pending = 0;
1429	EV_CB_INVOKE (p->w, p->events);	1996	EV_CB_INVOKE (p->w, p->events);
1430	}	1997	EV_FREQUENT_CHECK;
1431	}	1998	}
1432	}	1999	}
1433		2000
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	2001	#if EV_IDLE_ENABLE
1515	void inline_size	2002	/* make idle watchers pending. this handles the "call-idle */
		2003	/* only when higher priorities are idle" logic */
		2004	inline_size void
1516	idle_reify (EV_P)	2005	idle_reify (EV_P)
1517	{	2006	{
1518	if (expect_false (idleall))	2007	if (expect_false (idleall))
1519	{	2008	{
1520	int pri;	2009	int pri;
…		…
1532	}	2021	}
1533	}	2022	}
1534	}	2023	}
1535	#endif	2024	#endif
1536		2025
1537	void inline_speed	2026	/* make timers pending */
		2027	inline_size void
		2028	timers_reify (EV_P)
		2029	{
		2030	EV_FREQUENT_CHECK;
		2031
		2032	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		2033	{
		2034	do
		2035	{
		2036	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2037
		2038	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2039
		2040	/* first reschedule or stop timer */
		2041	if (w->repeat)
		2042	{
		2043	ev_at (w) += w->repeat;
		2044	if (ev_at (w) < mn_now)
		2045	ev_at (w) = mn_now;
		2046
		2047	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		2048
		2049	ANHE_at_cache (timers [HEAP0]);
		2050	downheap (timers, timercnt, HEAP0);
		2051	}
		2052	else
		2053	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2054
		2055	EV_FREQUENT_CHECK;
		2056	feed_reverse (EV_A_ (W)w);
		2057	}
		2058	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
		2059
		2060	feed_reverse_done (EV_A_ EV_TIMEOUT);
		2061	}
		2062	}
		2063
		2064	#if EV_PERIODIC_ENABLE
		2065	/* make periodics pending */
		2066	inline_size void
		2067	periodics_reify (EV_P)
		2068	{
		2069	EV_FREQUENT_CHECK;
		2070
		2071	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		2072	{
		2073	int feed_count = 0;
		2074
		2075	do
		2076	{
		2077	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2078
		2079	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2080
		2081	/* first reschedule or stop timer */
		2082	if (w->reschedule_cb)
		2083	{
		2084	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2085
		2086	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		2087
		2088	ANHE_at_cache (periodics [HEAP0]);
		2089	downheap (periodics, periodiccnt, HEAP0);
		2090	}
		2091	else if (w->interval)
		2092	{
		2093	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2094	/* if next trigger time is not sufficiently in the future, put it there */
		2095	/* this might happen because of floating point inexactness */
		2096	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2097	{
		2098	ev_at (w) += w->interval;
		2099
		2100	/* if interval is unreasonably low we might still have a time in the past */
		2101	/* so correct this. this will make the periodic very inexact, but the user */
		2102	/* has effectively asked to get triggered more often than possible */
		2103	if (ev_at (w) < ev_rt_now)
		2104	ev_at (w) = ev_rt_now;
		2105	}
		2106
		2107	ANHE_at_cache (periodics [HEAP0]);
		2108	downheap (periodics, periodiccnt, HEAP0);
		2109	}
		2110	else
		2111	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2112
		2113	EV_FREQUENT_CHECK;
		2114	feed_reverse (EV_A_ (W)w);
		2115	}
		2116	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
		2117
		2118	feed_reverse_done (EV_A_ EV_PERIODIC);
		2119	}
		2120	}
		2121
		2122	/* simply recalculate all periodics */
		2123	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
		2124	static void noinline
		2125	periodics_reschedule (EV_P)
		2126	{
		2127	int i;
		2128
		2129	/* adjust periodics after time jump */
		2130	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		2131	{
		2132	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		2133
		2134	if (w->reschedule_cb)
		2135	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2136	else if (w->interval)
		2137	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2138
		2139	ANHE_at_cache (periodics [i]);
		2140	}
		2141
		2142	reheap (periodics, periodiccnt);
		2143	}
		2144	#endif
		2145
		2146	/* adjust all timers by a given offset */
		2147	static void noinline
		2148	timers_reschedule (EV_P_ ev_tstamp adjust)
		2149	{
		2150	int i;
		2151
		2152	for (i = 0; i < timercnt; ++i)
		2153	{
		2154	ANHE *he = timers + i + HEAP0;
		2155	ANHE_w (*he)->at += adjust;
		2156	ANHE_at_cache (*he);
		2157	}
		2158	}
		2159
		2160	/* fetch new monotonic and realtime times from the kernel */
		2161	/* also detetc if there was a timejump, and act accordingly */
		2162	inline_speed void
1538	time_update (EV_P_ ev_tstamp max_block)	2163	time_update (EV_P_ ev_tstamp max_block)
1539	{	2164	{
1540	int i;
1541
1542	#if EV_USE_MONOTONIC	2165	#if EV_USE_MONOTONIC
1543	if (expect_true (have_monotonic))	2166	if (expect_true (have_monotonic))
1544	{	2167	{
		2168	int i;
1545	ev_tstamp odiff = rtmn_diff;	2169	ev_tstamp odiff = rtmn_diff;
1546		2170
1547	mn_now = get_clock ();	2171	mn_now = get_clock ();
1548		2172
1549	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2173	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1567	*/	2191	*/
1568	for (i = 4; --i; )	2192	for (i = 4; --i; )
1569	{	2193	{
1570	rtmn_diff = ev_rt_now - mn_now;	2194	rtmn_diff = ev_rt_now - mn_now;
1571		2195
1572	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	2196	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1573	return; /* all is well */	2197	return; /* all is well */
1574		2198
1575	ev_rt_now = ev_time ();	2199	ev_rt_now = ev_time ();
1576	mn_now = get_clock ();	2200	mn_now = get_clock ();
1577	now_floor = mn_now;	2201	now_floor = mn_now;
1578	}	2202	}
1579		2203
		2204	/* no timer adjustment, as the monotonic clock doesn't jump */
		2205	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1580	# if EV_PERIODIC_ENABLE	2206	# if EV_PERIODIC_ENABLE
1581	periodics_reschedule (EV_A);	2207	periodics_reschedule (EV_A);
1582	# endif	2208	# endif
1583	/* no timer adjustment, as the monotonic clock doesn't jump */
1584	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1585	}	2209	}
1586	else	2210	else
1587	#endif	2211	#endif
1588	{	2212	{
1589	ev_rt_now = ev_time ();	2213	ev_rt_now = ev_time ();
1590		2214
1591	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2215	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1592	{	2216	{
		2217	/* adjust timers. this is easy, as the offset is the same for all of them */
		2218	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1593	#if EV_PERIODIC_ENABLE	2219	#if EV_PERIODIC_ENABLE
1594	periodics_reschedule (EV_A);	2220	periodics_reschedule (EV_A);
1595	#endif	2221	#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	}	2222	}
1600		2223
1601	mn_now = ev_rt_now;	2224	mn_now = ev_rt_now;
1602	}	2225	}
1603	}	2226	}
1604		2227
1605	void	2228	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)	2229	ev_loop (EV_P_ int flags)
1621	{	2230	{
		2231	#if EV_MINIMAL < 2
		2232	++loop_depth;
		2233	#endif
		2234
		2235	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2236
1622	loop_done = EVUNLOOP_CANCEL;	2237	loop_done = EVUNLOOP_CANCEL;
1623		2238
1624	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2239	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1625		2240
1626	do	2241	do
1627	{	2242	{
		2243	#if EV_VERIFY >= 2
		2244	ev_loop_verify (EV_A);
		2245	#endif
		2246
1628	#ifndef _WIN32	2247	#ifndef _WIN32
1629	if (expect_false (curpid)) /* penalise the forking check even more */	2248	if (expect_false (curpid)) /* penalise the forking check even more */
1630	if (expect_false (getpid () != curpid))	2249	if (expect_false (getpid () != curpid))
1631	{	2250	{
1632	curpid = getpid ();	2251	curpid = getpid ();
…		…
1638	/* we might have forked, so queue fork handlers */	2257	/* we might have forked, so queue fork handlers */
1639	if (expect_false (postfork))	2258	if (expect_false (postfork))
1640	if (forkcnt)	2259	if (forkcnt)
1641	{	2260	{
1642	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2261	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1643	call_pending (EV_A);	2262	EV_INVOKE_PENDING;
1644	}	2263	}
1645	#endif	2264	#endif
1646		2265
1647	/* queue prepare watchers (and execute them) */	2266	/* queue prepare watchers (and execute them) */
1648	if (expect_false (preparecnt))	2267	if (expect_false (preparecnt))
1649	{	2268	{
1650	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2269	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1651	call_pending (EV_A);	2270	EV_INVOKE_PENDING;
1652	}	2271	}
1653		2272
1654	if (expect_false (!activecnt))	2273	if (expect_false (loop_done))
1655	break;	2274	break;
1656		2275
1657	/* we might have forked, so reify kernel state if necessary */	2276	/* we might have forked, so reify kernel state if necessary */
1658	if (expect_false (postfork))	2277	if (expect_false (postfork))
1659	loop_fork (EV_A);	2278	loop_fork (EV_A);
…		…
1666	ev_tstamp waittime = 0.;	2285	ev_tstamp waittime = 0.;
1667	ev_tstamp sleeptime = 0.;	2286	ev_tstamp sleeptime = 0.;
1668		2287
1669	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2288	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1670	{	2289	{
		2290	/* remember old timestamp for io_blocktime calculation */
		2291	ev_tstamp prev_mn_now = mn_now;
		2292
1671	/* update time to cancel out callback processing overhead */	2293	/* update time to cancel out callback processing overhead */
1672	time_update (EV_A_ 1e100);	2294	time_update (EV_A_ 1e100);
1673		2295
1674	waittime = MAX_BLOCKTIME;	2296	waittime = MAX_BLOCKTIME;
1675		2297
1676	if (timercnt)	2298	if (timercnt)
1677	{	2299	{
1678	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	2300	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1679	if (waittime > to) waittime = to;	2301	if (waittime > to) waittime = to;
1680	}	2302	}
1681		2303
1682	#if EV_PERIODIC_ENABLE	2304	#if EV_PERIODIC_ENABLE
1683	if (periodiccnt)	2305	if (periodiccnt)
1684	{	2306	{
1685	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	2307	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1686	if (waittime > to) waittime = to;	2308	if (waittime > to) waittime = to;
1687	}	2309	}
1688	#endif	2310	#endif
1689		2311
		2312	/* don't let timeouts decrease the waittime below timeout_blocktime */
1690	if (expect_false (waittime < timeout_blocktime))	2313	if (expect_false (waittime < timeout_blocktime))
1691	waittime = timeout_blocktime;	2314	waittime = timeout_blocktime;
1692		2315
1693	sleeptime = waittime - backend_fudge;	2316	/* extra check because io_blocktime is commonly 0 */
1694
1695	if (expect_true (sleeptime > io_blocktime))	2317	if (expect_false (io_blocktime))
1696	sleeptime = io_blocktime;
1697
1698	if (sleeptime)
1699	{	2318	{
		2319	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2320
		2321	if (sleeptime > waittime - backend_fudge)
		2322	sleeptime = waittime - backend_fudge;
		2323
		2324	if (expect_true (sleeptime > 0.))
		2325	{
1700	ev_sleep (sleeptime);	2326	ev_sleep (sleeptime);
1701	waittime -= sleeptime;	2327	waittime -= sleeptime;
		2328	}
1702	}	2329	}
1703	}	2330	}
1704		2331
		2332	#if EV_MINIMAL < 2
1705	++loop_count;	2333	++loop_count;
		2334	#endif
		2335	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1706	backend_poll (EV_A_ waittime);	2336	backend_poll (EV_A_ waittime);
		2337	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1707		2338
1708	/* update ev_rt_now, do magic */	2339	/* update ev_rt_now, do magic */
1709	time_update (EV_A_ waittime + sleeptime);	2340	time_update (EV_A_ waittime + sleeptime);
1710	}	2341	}
1711		2342
…		…
1722		2353
1723	/* queue check watchers, to be executed first */	2354	/* queue check watchers, to be executed first */
1724	if (expect_false (checkcnt))	2355	if (expect_false (checkcnt))
1725	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2356	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1726		2357
1727	call_pending (EV_A);	2358	EV_INVOKE_PENDING;
1728	}	2359	}
1729	while (expect_true (	2360	while (expect_true (
1730	activecnt	2361	activecnt
1731	&& !loop_done	2362	&& !loop_done
1732	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2363	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1733	));	2364	));
1734		2365
1735	if (loop_done == EVUNLOOP_ONE)	2366	if (loop_done == EVUNLOOP_ONE)
1736	loop_done = EVUNLOOP_CANCEL;	2367	loop_done = EVUNLOOP_CANCEL;
		2368
		2369	#if EV_MINIMAL < 2
		2370	--loop_depth;
		2371	#endif
1737	}	2372	}
1738		2373
1739	void	2374	void
1740	ev_unloop (EV_P_ int how)	2375	ev_unloop (EV_P_ int how)
1741	{	2376	{
1742	loop_done = how;	2377	loop_done = how;
1743	}	2378	}
1744		2379
		2380	void
		2381	ev_ref (EV_P)
		2382	{
		2383	++activecnt;
		2384	}
		2385
		2386	void
		2387	ev_unref (EV_P)
		2388	{
		2389	--activecnt;
		2390	}
		2391
		2392	void
		2393	ev_now_update (EV_P)
		2394	{
		2395	time_update (EV_A_ 1e100);
		2396	}
		2397
		2398	void
		2399	ev_suspend (EV_P)
		2400	{
		2401	ev_now_update (EV_A);
		2402	}
		2403
		2404	void
		2405	ev_resume (EV_P)
		2406	{
		2407	ev_tstamp mn_prev = mn_now;
		2408
		2409	ev_now_update (EV_A);
		2410	timers_reschedule (EV_A_ mn_now - mn_prev);
		2411	#if EV_PERIODIC_ENABLE
		2412	/* TODO: really do this? */
		2413	periodics_reschedule (EV_A);
		2414	#endif
		2415	}
		2416
1745	/*****************************************************************************/	2417	/*****************************************************************************/
		2418	/* singly-linked list management, used when the expected list length is short */
1746		2419
1747	void inline_size	2420	inline_size void
1748	wlist_add (WL *head, WL elem)	2421	wlist_add (WL *head, WL elem)
1749	{	2422	{
1750	elem->next = *head;	2423	elem->next = *head;
1751	*head = elem;	2424	*head = elem;
1752	}	2425	}
1753		2426
1754	void inline_size	2427	inline_size void
1755	wlist_del (WL *head, WL elem)	2428	wlist_del (WL *head, WL elem)
1756	{	2429	{
1757	while (*head)	2430	while (*head)
1758	{	2431	{
1759	if (*head == elem)	2432	if (expect_true (*head == elem))
1760	{	2433	{
1761	*head = elem->next;	2434	*head = elem->next;
1762	return;	2435	break;
1763	}	2436	}
1764		2437
1765	head = &(*head)->next;	2438	head = &(*head)->next;
1766	}	2439	}
1767	}	2440	}
1768		2441
1769	void inline_speed	2442	/* internal, faster, version of ev_clear_pending */
		2443	inline_speed void
1770	clear_pending (EV_P_ W w)	2444	clear_pending (EV_P_ W w)
1771	{	2445	{
1772	if (w->pending)	2446	if (w->pending)
1773	{	2447	{
1774	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2448	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1775	w->pending = 0;	2449	w->pending = 0;
1776	}	2450	}
1777	}	2451	}
1778		2452
1779	int	2453	int
…		…
1783	int pending = w_->pending;	2457	int pending = w_->pending;
1784		2458
1785	if (expect_true (pending))	2459	if (expect_true (pending))
1786	{	2460	{
1787	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2461	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2462	p->w = (W)&pending_w;
1788	w_->pending = 0;	2463	w_->pending = 0;
1789	p->w = 0;
1790	return p->events;	2464	return p->events;
1791	}	2465	}
1792	else	2466	else
1793	return 0;	2467	return 0;
1794	}	2468	}
1795		2469
1796	void inline_size	2470	inline_size void
1797	pri_adjust (EV_P_ W w)	2471	pri_adjust (EV_P_ W w)
1798	{	2472	{
1799	int pri = w->priority;	2473	int pri = ev_priority (w);
1800	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2474	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1801	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2475	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1802	w->priority = pri;	2476	ev_set_priority (w, pri);
1803	}	2477	}
1804		2478
1805	void inline_speed	2479	inline_speed void
1806	ev_start (EV_P_ W w, int active)	2480	ev_start (EV_P_ W w, int active)
1807	{	2481	{
1808	pri_adjust (EV_A_ w);	2482	pri_adjust (EV_A_ w);
1809	w->active = active;	2483	w->active = active;
1810	ev_ref (EV_A);	2484	ev_ref (EV_A);
1811	}	2485	}
1812		2486
1813	void inline_size	2487	inline_size void
1814	ev_stop (EV_P_ W w)	2488	ev_stop (EV_P_ W w)
1815	{	2489	{
1816	ev_unref (EV_A);	2490	ev_unref (EV_A);
1817	w->active = 0;	2491	w->active = 0;
1818	}	2492	}
…		…
1825	int fd = w->fd;	2499	int fd = w->fd;
1826		2500
1827	if (expect_false (ev_is_active (w)))	2501	if (expect_false (ev_is_active (w)))
1828	return;	2502	return;
1829		2503
1830	assert (("ev_io_start called with negative fd", fd >= 0));	2504	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2505	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2506
		2507	EV_FREQUENT_CHECK;
1831		2508
1832	ev_start (EV_A_ (W)w, 1);	2509	ev_start (EV_A_ (W)w, 1);
1833	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2510	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1834	wlist_add (&anfds[fd].head, (WL)w);	2511	wlist_add (&anfds[fd].head, (WL)w);
1835		2512
1836	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2513	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1837	w->events &= ~EV_IOFDSET;	2514	w->events &= ~EV__IOFDSET;
		2515
		2516	EV_FREQUENT_CHECK;
1838	}	2517	}
1839		2518
1840	void noinline	2519	void noinline
1841	ev_io_stop (EV_P_ ev_io *w)	2520	ev_io_stop (EV_P_ ev_io *w)
1842	{	2521	{
1843	clear_pending (EV_A_ (W)w);	2522	clear_pending (EV_A_ (W)w);
1844	if (expect_false (!ev_is_active (w)))	2523	if (expect_false (!ev_is_active (w)))
1845	return;	2524	return;
1846		2525
1847	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2526	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2527
		2528	EV_FREQUENT_CHECK;
1848		2529
1849	wlist_del (&anfds[w->fd].head, (WL)w);	2530	wlist_del (&anfds[w->fd].head, (WL)w);
1850	ev_stop (EV_A_ (W)w);	2531	ev_stop (EV_A_ (W)w);
1851		2532
1852	fd_change (EV_A_ w->fd, 1);	2533	fd_change (EV_A_ w->fd, 1);
		2534
		2535	EV_FREQUENT_CHECK;
1853	}	2536	}
1854		2537
1855	void noinline	2538	void noinline
1856	ev_timer_start (EV_P_ ev_timer *w)	2539	ev_timer_start (EV_P_ ev_timer *w)
1857	{	2540	{
1858	if (expect_false (ev_is_active (w)))	2541	if (expect_false (ev_is_active (w)))
1859	return;	2542	return;
1860		2543
1861	((WT)w)->at += mn_now;	2544	ev_at (w) += mn_now;
1862		2545
1863	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2546	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1864		2547
		2548	EV_FREQUENT_CHECK;
		2549
		2550	++timercnt;
1865	ev_start (EV_A_ (W)w, ++timercnt);	2551	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1866	array_needsize (WT, timers, timermax, timercnt, EMPTY2);	2552	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1867	timers [timercnt - 1] = (WT)w;	2553	ANHE_w (timers [ev_active (w)]) = (WT)w;
1868	upheap (timers, timercnt - 1);	2554	ANHE_at_cache (timers [ev_active (w)]);
		2555	upheap (timers, ev_active (w));
1869		2556
		2557	EV_FREQUENT_CHECK;
		2558
1870	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	2559	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1871	}	2560	}
1872		2561
1873	void noinline	2562	void noinline
1874	ev_timer_stop (EV_P_ ev_timer *w)	2563	ev_timer_stop (EV_P_ ev_timer *w)
1875	{	2564	{
1876	clear_pending (EV_A_ (W)w);	2565	clear_pending (EV_A_ (W)w);
1877	if (expect_false (!ev_is_active (w)))	2566	if (expect_false (!ev_is_active (w)))
1878	return;	2567	return;
1879		2568
1880	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));	2569	EV_FREQUENT_CHECK;
1881		2570
1882	{	2571	{
1883	int active = ((W)w)->active;	2572	int active = ev_active (w);
1884		2573
		2574	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2575
		2576	--timercnt;
		2577
1885	if (expect_true (--active < --timercnt))	2578	if (expect_true (active < timercnt + HEAP0))
1886	{	2579	{
1887	timers [active] = timers [timercnt];	2580	timers [active] = timers [timercnt + HEAP0];
1888	adjustheap (timers, timercnt, active);	2581	adjustheap (timers, timercnt, active);
1889	}	2582	}
1890	}	2583	}
1891		2584
1892	((WT)w)->at -= mn_now;	2585	EV_FREQUENT_CHECK;
		2586
		2587	ev_at (w) -= mn_now;
1893		2588
1894	ev_stop (EV_A_ (W)w);	2589	ev_stop (EV_A_ (W)w);
1895	}	2590	}
1896		2591
1897	void noinline	2592	void noinline
1898	ev_timer_again (EV_P_ ev_timer *w)	2593	ev_timer_again (EV_P_ ev_timer *w)
1899	{	2594	{
		2595	EV_FREQUENT_CHECK;
		2596
1900	if (ev_is_active (w))	2597	if (ev_is_active (w))
1901	{	2598	{
1902	if (w->repeat)	2599	if (w->repeat)
1903	{	2600	{
1904	((WT)w)->at = mn_now + w->repeat;	2601	ev_at (w) = mn_now + w->repeat;
		2602	ANHE_at_cache (timers [ev_active (w)]);
1905	adjustheap (timers, timercnt, ((W)w)->active - 1);	2603	adjustheap (timers, timercnt, ev_active (w));
1906	}	2604	}
1907	else	2605	else
1908	ev_timer_stop (EV_A_ w);	2606	ev_timer_stop (EV_A_ w);
1909	}	2607	}
1910	else if (w->repeat)	2608	else if (w->repeat)
1911	{	2609	{
1912	w->at = w->repeat;	2610	ev_at (w) = w->repeat;
1913	ev_timer_start (EV_A_ w);	2611	ev_timer_start (EV_A_ w);
1914	}	2612	}
		2613
		2614	EV_FREQUENT_CHECK;
		2615	}
		2616
		2617	ev_tstamp
		2618	ev_timer_remaining (EV_P_ ev_timer *w)
		2619	{
		2620	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1915	}	2621	}
1916		2622
1917	#if EV_PERIODIC_ENABLE	2623	#if EV_PERIODIC_ENABLE
1918	void noinline	2624	void noinline
1919	ev_periodic_start (EV_P_ ev_periodic *w)	2625	ev_periodic_start (EV_P_ ev_periodic *w)
1920	{	2626	{
1921	if (expect_false (ev_is_active (w)))	2627	if (expect_false (ev_is_active (w)))
1922	return;	2628	return;
1923		2629
1924	if (w->reschedule_cb)	2630	if (w->reschedule_cb)
1925	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2631	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1926	else if (w->interval)	2632	else if (w->interval)
1927	{	2633	{
1928	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2634	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1929	/* this formula differs from the one in periodic_reify because we do not always round up */	2635	/* this formula differs from the one in periodic_reify because we do not always round up */
1930	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2636	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1931	}	2637	}
1932	else	2638	else
1933	((WT)w)->at = w->offset;	2639	ev_at (w) = w->offset;
1934		2640
		2641	EV_FREQUENT_CHECK;
		2642
		2643	++periodiccnt;
1935	ev_start (EV_A_ (W)w, ++periodiccnt);	2644	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1936	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);	2645	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1937	periodics [periodiccnt - 1] = (WT)w;	2646	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1938	upheap (periodics, periodiccnt - 1);	2647	ANHE_at_cache (periodics [ev_active (w)]);
		2648	upheap (periodics, ev_active (w));
1939		2649
		2650	EV_FREQUENT_CHECK;
		2651
1940	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2652	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1941	}	2653	}
1942		2654
1943	void noinline	2655	void noinline
1944	ev_periodic_stop (EV_P_ ev_periodic *w)	2656	ev_periodic_stop (EV_P_ ev_periodic *w)
1945	{	2657	{
1946	clear_pending (EV_A_ (W)w);	2658	clear_pending (EV_A_ (W)w);
1947	if (expect_false (!ev_is_active (w)))	2659	if (expect_false (!ev_is_active (w)))
1948	return;	2660	return;
1949		2661
1950	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));	2662	EV_FREQUENT_CHECK;
1951		2663
1952	{	2664	{
1953	int active = ((W)w)->active;	2665	int active = ev_active (w);
1954		2666
		2667	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2668
		2669	--periodiccnt;
		2670
1955	if (expect_true (--active < --periodiccnt))	2671	if (expect_true (active < periodiccnt + HEAP0))
1956	{	2672	{
1957	periodics [active] = periodics [periodiccnt];	2673	periodics [active] = periodics [periodiccnt + HEAP0];
1958	adjustheap (periodics, periodiccnt, active);	2674	adjustheap (periodics, periodiccnt, active);
1959	}	2675	}
1960	}	2676	}
1961		2677
		2678	EV_FREQUENT_CHECK;
		2679
1962	ev_stop (EV_A_ (W)w);	2680	ev_stop (EV_A_ (W)w);
1963	}	2681	}
1964		2682
1965	void noinline	2683	void noinline
1966	ev_periodic_again (EV_P_ ev_periodic *w)	2684	ev_periodic_again (EV_P_ ev_periodic *w)
…		…
1976	#endif	2694	#endif
1977		2695
1978	void noinline	2696	void noinline
1979	ev_signal_start (EV_P_ ev_signal *w)	2697	ev_signal_start (EV_P_ ev_signal *w)
1980	{	2698	{
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)))	2699	if (expect_false (ev_is_active (w)))
1985	return;	2700	return;
1986		2701
1987	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2702	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1988		2703
1989	evpipe_init (EV_A);	2704	#if EV_MULTIPLICITY
		2705	assert (("libev: a signal must not be attached to two different loops",
		2706	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
1990		2707
		2708	signals [w->signum - 1].loop = EV_A;
		2709	#endif
		2710
		2711	EV_FREQUENT_CHECK;
		2712
		2713	#if EV_USE_SIGNALFD
		2714	if (sigfd == -2)
1991	{	2715	{
1992	#ifndef _WIN32	2716	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
1993	sigset_t full, prev;	2717	if (sigfd < 0 && errno == EINVAL)
1994	sigfillset (&full);	2718	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
1995	sigprocmask (SIG_SETMASK, &full, &prev);
1996	#endif
1997		2719
1998	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2720	if (sigfd >= 0)
		2721	{
		2722	fd_intern (sigfd); /* doing it twice will not hurt */
1999		2723
2000	#ifndef _WIN32	2724	sigemptyset (&sigfd_set);
2001	sigprocmask (SIG_SETMASK, &prev, 0);	2725
2002	#endif	2726	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2727	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2728	ev_io_start (EV_A_ &sigfd_w);
		2729	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2730	}
2003	}	2731	}
		2732
		2733	if (sigfd >= 0)
		2734	{
		2735	/* TODO: check .head */
		2736	sigaddset (&sigfd_set, w->signum);
		2737	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2738
		2739	signalfd (sigfd, &sigfd_set, 0);
		2740	}
		2741	#endif
2004		2742
2005	ev_start (EV_A_ (W)w, 1);	2743	ev_start (EV_A_ (W)w, 1);
2006	wlist_add (&signals [w->signum - 1].head, (WL)w);	2744	wlist_add (&signals [w->signum - 1].head, (WL)w);
2007		2745
2008	if (!((WL)w)->next)	2746	if (!((WL)w)->next)
		2747	# if EV_USE_SIGNALFD
		2748	if (sigfd < 0) /*TODO*/
		2749	# endif
2009	{	2750	{
2010	#if _WIN32	2751	# if _WIN32
		2752	evpipe_init (EV_A);
		2753
2011	signal (w->signum, ev_sighandler);	2754	signal (w->signum, ev_sighandler);
2012	#else	2755	# else
2013	struct sigaction sa;	2756	struct sigaction sa;
		2757
		2758	evpipe_init (EV_A);
		2759
2014	sa.sa_handler = ev_sighandler;	2760	sa.sa_handler = ev_sighandler;
2015	sigfillset (&sa.sa_mask);	2761	sigfillset (&sa.sa_mask);
2016	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2762	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2017	sigaction (w->signum, &sa, 0);	2763	sigaction (w->signum, &sa, 0);
		2764
		2765	sigemptyset (&sa.sa_mask);
		2766	sigaddset (&sa.sa_mask, w->signum);
		2767	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2018	#endif	2768	#endif
2019	}	2769	}
		2770
		2771	EV_FREQUENT_CHECK;
2020	}	2772	}
2021		2773
2022	void noinline	2774	void noinline
2023	ev_signal_stop (EV_P_ ev_signal *w)	2775	ev_signal_stop (EV_P_ ev_signal *w)
2024	{	2776	{
2025	clear_pending (EV_A_ (W)w);	2777	clear_pending (EV_A_ (W)w);
2026	if (expect_false (!ev_is_active (w)))	2778	if (expect_false (!ev_is_active (w)))
2027	return;	2779	return;
2028		2780
		2781	EV_FREQUENT_CHECK;
		2782
2029	wlist_del (&signals [w->signum - 1].head, (WL)w);	2783	wlist_del (&signals [w->signum - 1].head, (WL)w);
2030	ev_stop (EV_A_ (W)w);	2784	ev_stop (EV_A_ (W)w);
2031		2785
2032	if (!signals [w->signum - 1].head)	2786	if (!signals [w->signum - 1].head)
		2787	{
		2788	#if EV_MULTIPLICITY
		2789	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2790	#endif
		2791	#if EV_USE_SIGNALFD
		2792	if (sigfd >= 0)
		2793	{
		2794	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2795	sigdelset (&sigfd_set, w->signum);
		2796	signalfd (sigfd, &sigfd_set, 0);
		2797	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2798	/*TODO: maybe unblock signal? */
		2799	}
		2800	else
		2801	#endif
2033	signal (w->signum, SIG_DFL);	2802	signal (w->signum, SIG_DFL);
		2803	}
		2804
		2805	EV_FREQUENT_CHECK;
2034	}	2806	}
2035		2807
2036	void	2808	void
2037	ev_child_start (EV_P_ ev_child *w)	2809	ev_child_start (EV_P_ ev_child *w)
2038	{	2810	{
2039	#if EV_MULTIPLICITY	2811	#if EV_MULTIPLICITY
2040	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2812	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2041	#endif	2813	#endif
2042	if (expect_false (ev_is_active (w)))	2814	if (expect_false (ev_is_active (w)))
2043	return;	2815	return;
2044		2816
		2817	EV_FREQUENT_CHECK;
		2818
2045	ev_start (EV_A_ (W)w, 1);	2819	ev_start (EV_A_ (W)w, 1);
2046	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2820	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2821
		2822	EV_FREQUENT_CHECK;
2047	}	2823	}
2048		2824
2049	void	2825	void
2050	ev_child_stop (EV_P_ ev_child *w)	2826	ev_child_stop (EV_P_ ev_child *w)
2051	{	2827	{
2052	clear_pending (EV_A_ (W)w);	2828	clear_pending (EV_A_ (W)w);
2053	if (expect_false (!ev_is_active (w)))	2829	if (expect_false (!ev_is_active (w)))
2054	return;	2830	return;
2055		2831
		2832	EV_FREQUENT_CHECK;
		2833
2056	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2834	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2057	ev_stop (EV_A_ (W)w);	2835	ev_stop (EV_A_ (W)w);
		2836
		2837	EV_FREQUENT_CHECK;
2058	}	2838	}
2059		2839
2060	#if EV_STAT_ENABLE	2840	#if EV_STAT_ENABLE
2061		2841
2062	# ifdef _WIN32	2842	# ifdef _WIN32
2063	# undef lstat	2843	# undef lstat
2064	# define lstat(a,b) _stati64 (a,b)	2844	# define lstat(a,b) _stati64 (a,b)
2065	# endif	2845	# endif
2066		2846
2067	#define DEF_STAT_INTERVAL 5.0074891	2847	#define DEF_STAT_INTERVAL 5.0074891
		2848	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2068	#define MIN_STAT_INTERVAL 0.1074891	2849	#define MIN_STAT_INTERVAL 0.1074891
2069		2850
2070	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2851	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2071		2852
2072	#if EV_USE_INOTIFY	2853	#if EV_USE_INOTIFY
2073	# define EV_INOTIFY_BUFSIZE 8192	2854	# define EV_INOTIFY_BUFSIZE 8192
…		…
2077	{	2858	{
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);	2859	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2079		2860
2080	if (w->wd < 0)	2861	if (w->wd < 0)
2081	{	2862	{
		2863	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2082	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2864	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2083		2865
2084	/* monitor some parent directory for speedup hints */	2866	/* monitor some parent directory for speedup hints */
		2867	/* note that exceeding the hardcoded path limit is not a correctness issue, */
		2868	/* but an efficiency issue only */
2085	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2869	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2086	{	2870	{
2087	char path [4096];	2871	char path [4096];
2088	strcpy (path, w->path);	2872	strcpy (path, w->path);
2089		2873
…		…
2092	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2876	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2093	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2877	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2094		2878
2095	char *pend = strrchr (path, '/');	2879	char *pend = strrchr (path, '/');
2096		2880
2097	if (!pend)	2881	if (!pend || pend == path)
2098	break; /* whoops, no '/', complain to your admin */	2882	break;
2099		2883
2100	*pend = 0;	2884	*pend = 0;
2101	w->wd = inotify_add_watch (fs_fd, path, mask);	2885	w->wd = inotify_add_watch (fs_fd, path, mask);
2102	}	2886	}
2103	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2887	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2104	}	2888	}
2105	}	2889	}
2106	else
2107	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2108		2890
2109	if (w->wd >= 0)	2891	if (w->wd >= 0)
		2892	{
		2893	struct statfs sfs;
		2894
2110	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2895	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2896
		2897	/* now local changes will be tracked by inotify, but remote changes won't */
		2898	/* unless the filesystem is known to be local, we therefore still poll */
		2899	/* also do poll on <2.6.25, but with normal frequency */
		2900
		2901	if (fs_2625 && !statfs (w->path, &sfs))
		2902	if (sfs.f_type == 0x1373 /* devfs */
		2903	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2904	|| sfs.f_type == 0x3153464a /* jfs */
		2905	|| sfs.f_type == 0x52654973 /* reiser3 */
		2906	|| sfs.f_type == 0x01021994 /* tempfs */
		2907	|| sfs.f_type == 0x58465342 /* xfs */)
		2908	return;
		2909
		2910	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2911	ev_timer_again (EV_A_ &w->timer);
		2912	}
2111	}	2913	}
2112		2914
2113	static void noinline	2915	static void noinline
2114	infy_del (EV_P_ ev_stat *w)	2916	infy_del (EV_P_ ev_stat *w)
2115	{	2917	{
…		…
2129		2931
2130	static void noinline	2932	static void noinline
2131	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2933	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2132	{	2934	{
2133	if (slot < 0)	2935	if (slot < 0)
2134	/* overflow, need to check for all hahs slots */	2936	/* overflow, need to check for all hash slots */
2135	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2937	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2136	infy_wd (EV_A_ slot, wd, ev);	2938	infy_wd (EV_A_ slot, wd, ev);
2137	else	2939	else
2138	{	2940	{
2139	WL w_;	2941	WL w_;
…		…
2145		2947
2146	if (w->wd == wd || wd == -1)	2948	if (w->wd == wd || wd == -1)
2147	{	2949	{
2148	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2950	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2149	{	2951	{
		2952	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2150	w->wd = -1;	2953	w->wd = -1;
2151	infy_add (EV_A_ w); /* re-add, no matter what */	2954	infy_add (EV_A_ w); /* re-add, no matter what */
2152	}	2955	}
2153		2956
2154	stat_timer_cb (EV_A_ &w->timer, 0);	2957	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2167		2970
2168	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2971	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2169	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2972	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2170	}	2973	}
2171		2974
2172	void inline_size	2975	inline_size void
		2976	check_2625 (EV_P)
		2977	{
		2978	/* kernels < 2.6.25 are borked
		2979	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2980	*/
		2981	struct utsname buf;
		2982	int major, minor, micro;
		2983
		2984	if (uname (&buf))
		2985	return;
		2986
		2987	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2988	return;
		2989
		2990	if (major < 2
		2991	|| (major == 2 && minor < 6)
		2992	|| (major == 2 && minor == 6 && micro < 25))
		2993	return;
		2994
		2995	fs_2625 = 1;
		2996	}
		2997
		2998	inline_size int
		2999	infy_newfd (void)
		3000	{
		3001	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3002	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3003	if (fd >= 0)
		3004	return fd;
		3005	#endif
		3006	return inotify_init ();
		3007	}
		3008
		3009	inline_size void
2173	infy_init (EV_P)	3010	infy_init (EV_P)
2174	{	3011	{
2175	if (fs_fd != -2)	3012	if (fs_fd != -2)
2176	return;	3013	return;
2177		3014
		3015	fs_fd = -1;
		3016
		3017	check_2625 (EV_A);
		3018
2178	fs_fd = inotify_init ();	3019	fs_fd = infy_newfd ();
2179		3020
2180	if (fs_fd >= 0)	3021	if (fs_fd >= 0)
2181	{	3022	{
		3023	fd_intern (fs_fd);
2182	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3024	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2183	ev_set_priority (&fs_w, EV_MAXPRI);	3025	ev_set_priority (&fs_w, EV_MAXPRI);
2184	ev_io_start (EV_A_ &fs_w);	3026	ev_io_start (EV_A_ &fs_w);
		3027	ev_unref (EV_A);
2185	}	3028	}
2186	}	3029	}
2187		3030
2188	void inline_size	3031	inline_size void
2189	infy_fork (EV_P)	3032	infy_fork (EV_P)
2190	{	3033	{
2191	int slot;	3034	int slot;
2192		3035
2193	if (fs_fd < 0)	3036	if (fs_fd < 0)
2194	return;	3037	return;
2195		3038
		3039	ev_ref (EV_A);
		3040	ev_io_stop (EV_A_ &fs_w);
2196	close (fs_fd);	3041	close (fs_fd);
2197	fs_fd = inotify_init ();	3042	fs_fd = infy_newfd ();
		3043
		3044	if (fs_fd >= 0)
		3045	{
		3046	fd_intern (fs_fd);
		3047	ev_io_set (&fs_w, fs_fd, EV_READ);
		3048	ev_io_start (EV_A_ &fs_w);
		3049	ev_unref (EV_A);
		3050	}
2198		3051
2199	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3052	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2200	{	3053	{
2201	WL w_ = fs_hash [slot].head;	3054	WL w_ = fs_hash [slot].head;
2202	fs_hash [slot].head = 0;	3055	fs_hash [slot].head = 0;
…		…
2209	w->wd = -1;	3062	w->wd = -1;
2210		3063
2211	if (fs_fd >= 0)	3064	if (fs_fd >= 0)
2212	infy_add (EV_A_ w); /* re-add, no matter what */	3065	infy_add (EV_A_ w); /* re-add, no matter what */
2213	else	3066	else
2214	ev_timer_start (EV_A_ &w->timer);	3067	ev_timer_again (EV_A_ &w->timer);
2215	}	3068	}
2216
2217	}	3069	}
2218	}	3070	}
2219		3071
		3072	#endif
		3073
		3074	#ifdef _WIN32
		3075	# define EV_LSTAT(p,b) _stati64 (p, b)
		3076	#else
		3077	# define EV_LSTAT(p,b) lstat (p, b)
2220	#endif	3078	#endif
2221		3079
2222	void	3080	void
2223	ev_stat_stat (EV_P_ ev_stat *w)	3081	ev_stat_stat (EV_P_ ev_stat *w)
2224	{	3082	{
…		…
2251	|| w->prev.st_atime != w->attr.st_atime	3109	|| w->prev.st_atime != w->attr.st_atime
2252	|| w->prev.st_mtime != w->attr.st_mtime	3110	|| w->prev.st_mtime != w->attr.st_mtime
2253	|| w->prev.st_ctime != w->attr.st_ctime	3111	|| w->prev.st_ctime != w->attr.st_ctime
2254	) {	3112	) {
2255	#if EV_USE_INOTIFY	3113	#if EV_USE_INOTIFY
		3114	if (fs_fd >= 0)
		3115	{
2256	infy_del (EV_A_ w);	3116	infy_del (EV_A_ w);
2257	infy_add (EV_A_ w);	3117	infy_add (EV_A_ w);
2258	ev_stat_stat (EV_A_ w); /* avoid race... */	3118	ev_stat_stat (EV_A_ w); /* avoid race... */
		3119	}
2259	#endif	3120	#endif
2260		3121
2261	ev_feed_event (EV_A_ w, EV_STAT);	3122	ev_feed_event (EV_A_ w, EV_STAT);
2262	}	3123	}
2263	}	3124	}
…		…
2266	ev_stat_start (EV_P_ ev_stat *w)	3127	ev_stat_start (EV_P_ ev_stat *w)
2267	{	3128	{
2268	if (expect_false (ev_is_active (w)))	3129	if (expect_false (ev_is_active (w)))
2269	return;	3130	return;
2270		3131
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);	3132	ev_stat_stat (EV_A_ w);
2276		3133
		3134	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2277	if (w->interval < MIN_STAT_INTERVAL)	3135	w->interval = MIN_STAT_INTERVAL;
2278	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2279		3136
2280	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3137	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2281	ev_set_priority (&w->timer, ev_priority (w));	3138	ev_set_priority (&w->timer, ev_priority (w));
2282		3139
2283	#if EV_USE_INOTIFY	3140	#if EV_USE_INOTIFY
2284	infy_init (EV_A);	3141	infy_init (EV_A);
2285		3142
2286	if (fs_fd >= 0)	3143	if (fs_fd >= 0)
2287	infy_add (EV_A_ w);	3144	infy_add (EV_A_ w);
2288	else	3145	else
2289	#endif	3146	#endif
2290	ev_timer_start (EV_A_ &w->timer);	3147	ev_timer_again (EV_A_ &w->timer);
2291		3148
2292	ev_start (EV_A_ (W)w, 1);	3149	ev_start (EV_A_ (W)w, 1);
		3150
		3151	EV_FREQUENT_CHECK;
2293	}	3152	}
2294		3153
2295	void	3154	void
2296	ev_stat_stop (EV_P_ ev_stat *w)	3155	ev_stat_stop (EV_P_ ev_stat *w)
2297	{	3156	{
2298	clear_pending (EV_A_ (W)w);	3157	clear_pending (EV_A_ (W)w);
2299	if (expect_false (!ev_is_active (w)))	3158	if (expect_false (!ev_is_active (w)))
2300	return;	3159	return;
2301		3160
		3161	EV_FREQUENT_CHECK;
		3162
2302	#if EV_USE_INOTIFY	3163	#if EV_USE_INOTIFY
2303	infy_del (EV_A_ w);	3164	infy_del (EV_A_ w);
2304	#endif	3165	#endif
2305	ev_timer_stop (EV_A_ &w->timer);	3166	ev_timer_stop (EV_A_ &w->timer);
2306		3167
2307	ev_stop (EV_A_ (W)w);	3168	ev_stop (EV_A_ (W)w);
		3169
		3170	EV_FREQUENT_CHECK;
2308	}	3171	}
2309	#endif	3172	#endif
2310		3173
2311	#if EV_IDLE_ENABLE	3174	#if EV_IDLE_ENABLE
2312	void	3175	void
…		…
2314	{	3177	{
2315	if (expect_false (ev_is_active (w)))	3178	if (expect_false (ev_is_active (w)))
2316	return;	3179	return;
2317		3180
2318	pri_adjust (EV_A_ (W)w);	3181	pri_adjust (EV_A_ (W)w);
		3182
		3183	EV_FREQUENT_CHECK;
2319		3184
2320	{	3185	{
2321	int active = ++idlecnt [ABSPRI (w)];	3186	int active = ++idlecnt [ABSPRI (w)];
2322		3187
2323	++idleall;	3188	++idleall;
2324	ev_start (EV_A_ (W)w, active);	3189	ev_start (EV_A_ (W)w, active);
2325		3190
2326	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	3191	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2327	idles [ABSPRI (w)][active - 1] = w;	3192	idles [ABSPRI (w)][active - 1] = w;
2328	}	3193	}
		3194
		3195	EV_FREQUENT_CHECK;
2329	}	3196	}
2330		3197
2331	void	3198	void
2332	ev_idle_stop (EV_P_ ev_idle *w)	3199	ev_idle_stop (EV_P_ ev_idle *w)
2333	{	3200	{
2334	clear_pending (EV_A_ (W)w);	3201	clear_pending (EV_A_ (W)w);
2335	if (expect_false (!ev_is_active (w)))	3202	if (expect_false (!ev_is_active (w)))
2336	return;	3203	return;
2337		3204
		3205	EV_FREQUENT_CHECK;
		3206
2338	{	3207	{
2339	int active = ((W)w)->active;	3208	int active = ev_active (w);
2340		3209
2341	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3210	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2342	((W)idles [ABSPRI (w)][active - 1])->active = active;	3211	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2343		3212
2344	ev_stop (EV_A_ (W)w);	3213	ev_stop (EV_A_ (W)w);
2345	--idleall;	3214	--idleall;
2346	}	3215	}
		3216
		3217	EV_FREQUENT_CHECK;
2347	}	3218	}
2348	#endif	3219	#endif
2349		3220
2350	void	3221	void
2351	ev_prepare_start (EV_P_ ev_prepare *w)	3222	ev_prepare_start (EV_P_ ev_prepare *w)
2352	{	3223	{
2353	if (expect_false (ev_is_active (w)))	3224	if (expect_false (ev_is_active (w)))
2354	return;	3225	return;
		3226
		3227	EV_FREQUENT_CHECK;
2355		3228
2356	ev_start (EV_A_ (W)w, ++preparecnt);	3229	ev_start (EV_A_ (W)w, ++preparecnt);
2357	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3230	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2358	prepares [preparecnt - 1] = w;	3231	prepares [preparecnt - 1] = w;
		3232
		3233	EV_FREQUENT_CHECK;
2359	}	3234	}
2360		3235
2361	void	3236	void
2362	ev_prepare_stop (EV_P_ ev_prepare *w)	3237	ev_prepare_stop (EV_P_ ev_prepare *w)
2363	{	3238	{
2364	clear_pending (EV_A_ (W)w);	3239	clear_pending (EV_A_ (W)w);
2365	if (expect_false (!ev_is_active (w)))	3240	if (expect_false (!ev_is_active (w)))
2366	return;	3241	return;
2367		3242
		3243	EV_FREQUENT_CHECK;
		3244
2368	{	3245	{
2369	int active = ((W)w)->active;	3246	int active = ev_active (w);
		3247
2370	prepares [active - 1] = prepares [--preparecnt];	3248	prepares [active - 1] = prepares [--preparecnt];
2371	((W)prepares [active - 1])->active = active;	3249	ev_active (prepares [active - 1]) = active;
2372	}	3250	}
2373		3251
2374	ev_stop (EV_A_ (W)w);	3252	ev_stop (EV_A_ (W)w);
		3253
		3254	EV_FREQUENT_CHECK;
2375	}	3255	}
2376		3256
2377	void	3257	void
2378	ev_check_start (EV_P_ ev_check *w)	3258	ev_check_start (EV_P_ ev_check *w)
2379	{	3259	{
2380	if (expect_false (ev_is_active (w)))	3260	if (expect_false (ev_is_active (w)))
2381	return;	3261	return;
		3262
		3263	EV_FREQUENT_CHECK;
2382		3264
2383	ev_start (EV_A_ (W)w, ++checkcnt);	3265	ev_start (EV_A_ (W)w, ++checkcnt);
2384	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3266	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2385	checks [checkcnt - 1] = w;	3267	checks [checkcnt - 1] = w;
		3268
		3269	EV_FREQUENT_CHECK;
2386	}	3270	}
2387		3271
2388	void	3272	void
2389	ev_check_stop (EV_P_ ev_check *w)	3273	ev_check_stop (EV_P_ ev_check *w)
2390	{	3274	{
2391	clear_pending (EV_A_ (W)w);	3275	clear_pending (EV_A_ (W)w);
2392	if (expect_false (!ev_is_active (w)))	3276	if (expect_false (!ev_is_active (w)))
2393	return;	3277	return;
2394		3278
		3279	EV_FREQUENT_CHECK;
		3280
2395	{	3281	{
2396	int active = ((W)w)->active;	3282	int active = ev_active (w);
		3283
2397	checks [active - 1] = checks [--checkcnt];	3284	checks [active - 1] = checks [--checkcnt];
2398	((W)checks [active - 1])->active = active;	3285	ev_active (checks [active - 1]) = active;
2399	}	3286	}
2400		3287
2401	ev_stop (EV_A_ (W)w);	3288	ev_stop (EV_A_ (W)w);
		3289
		3290	EV_FREQUENT_CHECK;
2402	}	3291	}
2403		3292
2404	#if EV_EMBED_ENABLE	3293	#if EV_EMBED_ENABLE
2405	void noinline	3294	void noinline
2406	ev_embed_sweep (EV_P_ ev_embed *w)	3295	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2423	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3312	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2424	{	3313	{
2425	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3314	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2426		3315
2427	{	3316	{
2428	struct ev_loop *loop = w->other;	3317	EV_P = w->other;
2429		3318
2430	while (fdchangecnt)	3319	while (fdchangecnt)
2431	{	3320	{
2432	fd_reify (EV_A);	3321	fd_reify (EV_A);
2433	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3322	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2434	}	3323	}
2435	}	3324	}
2436	}	3325	}
2437		3326
		3327	static void
		3328	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3329	{
		3330	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3331
		3332	ev_embed_stop (EV_A_ w);
		3333
		3334	{
		3335	EV_P = w->other;
		3336
		3337	ev_loop_fork (EV_A);
		3338	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3339	}
		3340
		3341	ev_embed_start (EV_A_ w);
		3342	}
		3343
2438	#if 0	3344	#if 0
2439	static void	3345	static void
2440	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3346	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2441	{	3347	{
2442	ev_idle_stop (EV_A_ idle);	3348	ev_idle_stop (EV_A_ idle);
…		…
2448	{	3354	{
2449	if (expect_false (ev_is_active (w)))	3355	if (expect_false (ev_is_active (w)))
2450	return;	3356	return;
2451		3357
2452	{	3358	{
2453	struct ev_loop *loop = w->other;	3359	EV_P = w->other;
2454	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3360	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2455	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3361	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2456	}	3362	}
		3363
		3364	EV_FREQUENT_CHECK;
2457		3365
2458	ev_set_priority (&w->io, ev_priority (w));	3366	ev_set_priority (&w->io, ev_priority (w));
2459	ev_io_start (EV_A_ &w->io);	3367	ev_io_start (EV_A_ &w->io);
2460		3368
2461	ev_prepare_init (&w->prepare, embed_prepare_cb);	3369	ev_prepare_init (&w->prepare, embed_prepare_cb);
2462	ev_set_priority (&w->prepare, EV_MINPRI);	3370	ev_set_priority (&w->prepare, EV_MINPRI);
2463	ev_prepare_start (EV_A_ &w->prepare);	3371	ev_prepare_start (EV_A_ &w->prepare);
2464		3372
		3373	ev_fork_init (&w->fork, embed_fork_cb);
		3374	ev_fork_start (EV_A_ &w->fork);
		3375
2465	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3376	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2466		3377
2467	ev_start (EV_A_ (W)w, 1);	3378	ev_start (EV_A_ (W)w, 1);
		3379
		3380	EV_FREQUENT_CHECK;
2468	}	3381	}
2469		3382
2470	void	3383	void
2471	ev_embed_stop (EV_P_ ev_embed *w)	3384	ev_embed_stop (EV_P_ ev_embed *w)
2472	{	3385	{
2473	clear_pending (EV_A_ (W)w);	3386	clear_pending (EV_A_ (W)w);
2474	if (expect_false (!ev_is_active (w)))	3387	if (expect_false (!ev_is_active (w)))
2475	return;	3388	return;
2476		3389
		3390	EV_FREQUENT_CHECK;
		3391
2477	ev_io_stop (EV_A_ &w->io);	3392	ev_io_stop (EV_A_ &w->io);
2478	ev_prepare_stop (EV_A_ &w->prepare);	3393	ev_prepare_stop (EV_A_ &w->prepare);
		3394	ev_fork_stop (EV_A_ &w->fork);
2479		3395
2480	ev_stop (EV_A_ (W)w);	3396	EV_FREQUENT_CHECK;
2481	}	3397	}
2482	#endif	3398	#endif
2483		3399
2484	#if EV_FORK_ENABLE	3400	#if EV_FORK_ENABLE
2485	void	3401	void
2486	ev_fork_start (EV_P_ ev_fork *w)	3402	ev_fork_start (EV_P_ ev_fork *w)
2487	{	3403	{
2488	if (expect_false (ev_is_active (w)))	3404	if (expect_false (ev_is_active (w)))
2489	return;	3405	return;
		3406
		3407	EV_FREQUENT_CHECK;
2490		3408
2491	ev_start (EV_A_ (W)w, ++forkcnt);	3409	ev_start (EV_A_ (W)w, ++forkcnt);
2492	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3410	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2493	forks [forkcnt - 1] = w;	3411	forks [forkcnt - 1] = w;
		3412
		3413	EV_FREQUENT_CHECK;
2494	}	3414	}
2495		3415
2496	void	3416	void
2497	ev_fork_stop (EV_P_ ev_fork *w)	3417	ev_fork_stop (EV_P_ ev_fork *w)
2498	{	3418	{
2499	clear_pending (EV_A_ (W)w);	3419	clear_pending (EV_A_ (W)w);
2500	if (expect_false (!ev_is_active (w)))	3420	if (expect_false (!ev_is_active (w)))
2501	return;	3421	return;
2502		3422
		3423	EV_FREQUENT_CHECK;
		3424
2503	{	3425	{
2504	int active = ((W)w)->active;	3426	int active = ev_active (w);
		3427
2505	forks [active - 1] = forks [--forkcnt];	3428	forks [active - 1] = forks [--forkcnt];
2506	((W)forks [active - 1])->active = active;	3429	ev_active (forks [active - 1]) = active;
2507	}	3430	}
2508		3431
2509	ev_stop (EV_A_ (W)w);	3432	ev_stop (EV_A_ (W)w);
		3433
		3434	EV_FREQUENT_CHECK;
2510	}	3435	}
2511	#endif	3436	#endif
2512		3437
2513	#if EV_ASYNC_ENABLE	3438	#if EV_ASYNC_ENABLE
2514	void	3439	void
…		…
2516	{	3441	{
2517	if (expect_false (ev_is_active (w)))	3442	if (expect_false (ev_is_active (w)))
2518	return;	3443	return;
2519		3444
2520	evpipe_init (EV_A);	3445	evpipe_init (EV_A);
		3446
		3447	EV_FREQUENT_CHECK;
2521		3448
2522	ev_start (EV_A_ (W)w, ++asynccnt);	3449	ev_start (EV_A_ (W)w, ++asynccnt);
2523	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3450	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2524	asyncs [asynccnt - 1] = w;	3451	asyncs [asynccnt - 1] = w;
		3452
		3453	EV_FREQUENT_CHECK;
2525	}	3454	}
2526		3455
2527	void	3456	void
2528	ev_async_stop (EV_P_ ev_async *w)	3457	ev_async_stop (EV_P_ ev_async *w)
2529	{	3458	{
2530	clear_pending (EV_A_ (W)w);	3459	clear_pending (EV_A_ (W)w);
2531	if (expect_false (!ev_is_active (w)))	3460	if (expect_false (!ev_is_active (w)))
2532	return;	3461	return;
2533		3462
		3463	EV_FREQUENT_CHECK;
		3464
2534	{	3465	{
2535	int active = ((W)w)->active;	3466	int active = ev_active (w);
		3467
2536	asyncs [active - 1] = asyncs [--asynccnt];	3468	asyncs [active - 1] = asyncs [--asynccnt];
2537	((W)asyncs [active - 1])->active = active;	3469	ev_active (asyncs [active - 1]) = active;
2538	}	3470	}
2539		3471
2540	ev_stop (EV_A_ (W)w);	3472	ev_stop (EV_A_ (W)w);
		3473
		3474	EV_FREQUENT_CHECK;
2541	}	3475	}
2542		3476
2543	void	3477	void
2544	ev_async_send (EV_P_ ev_async *w)	3478	ev_async_send (EV_P_ ev_async *w)
2545	{	3479	{
2546	w->sent = 1;	3480	w->sent = 1;
2547	evpipe_write (EV_A_ &gotasync);	3481	evpipe_write (EV_A_ &async_pending);
2548	}	3482	}
2549	#endif	3483	#endif
2550		3484
2551	/*****************************************************************************/	3485	/*****************************************************************************/
2552		3486
…		…
2562	once_cb (EV_P_ struct ev_once *once, int revents)	3496	once_cb (EV_P_ struct ev_once *once, int revents)
2563	{	3497	{
2564	void (*cb)(int revents, void *arg) = once->cb;	3498	void (*cb)(int revents, void *arg) = once->cb;
2565	void *arg = once->arg;	3499	void *arg = once->arg;
2566		3500
2567	ev_io_stop (EV_A_ &once->io);	3501	ev_io_stop (EV_A_ &once->io);
2568	ev_timer_stop (EV_A_ &once->to);	3502	ev_timer_stop (EV_A_ &once->to);
2569	ev_free (once);	3503	ev_free (once);
2570		3504
2571	cb (revents, arg);	3505	cb (revents, arg);
2572	}	3506	}
2573		3507
2574	static void	3508	static void
2575	once_cb_io (EV_P_ ev_io *w, int revents)	3509	once_cb_io (EV_P_ ev_io *w, int revents)
2576	{	3510	{
2577	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3511	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3512
		3513	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2578	}	3514	}
2579		3515
2580	static void	3516	static void
2581	once_cb_to (EV_P_ ev_timer *w, int revents)	3517	once_cb_to (EV_P_ ev_timer *w, int revents)
2582	{	3518	{
2583	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3519	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3520
		3521	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2584	}	3522	}
2585		3523
2586	void	3524	void
2587	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3525	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2588	{	3526	{
…		…
2610	ev_timer_set (&once->to, timeout, 0.);	3548	ev_timer_set (&once->to, timeout, 0.);
2611	ev_timer_start (EV_A_ &once->to);	3549	ev_timer_start (EV_A_ &once->to);
2612	}	3550	}
2613	}	3551	}
2614		3552
		3553	/*****************************************************************************/
		3554
		3555	#if EV_WALK_ENABLE
		3556	void
		3557	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3558	{
		3559	int i, j;
		3560	ev_watcher_list *wl, *wn;
		3561
		3562	if (types & (EV_IO | EV_EMBED))
		3563	for (i = 0; i < anfdmax; ++i)
		3564	for (wl = anfds [i].head; wl; )
		3565	{
		3566	wn = wl->next;
		3567
		3568	#if EV_EMBED_ENABLE
		3569	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3570	{
		3571	if (types & EV_EMBED)
		3572	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3573	}
		3574	else
		3575	#endif
		3576	#if EV_USE_INOTIFY
		3577	if (ev_cb ((ev_io *)wl) == infy_cb)
		3578	;
		3579	else
		3580	#endif
		3581	if ((ev_io *)wl != &pipe_w)
		3582	if (types & EV_IO)
		3583	cb (EV_A_ EV_IO, wl);
		3584
		3585	wl = wn;
		3586	}
		3587
		3588	if (types & (EV_TIMER | EV_STAT))
		3589	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3590	#if EV_STAT_ENABLE
		3591	/*TODO: timer is not always active*/
		3592	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3593	{
		3594	if (types & EV_STAT)
		3595	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3596	}
		3597	else
		3598	#endif
		3599	if (types & EV_TIMER)
		3600	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3601
		3602	#if EV_PERIODIC_ENABLE
		3603	if (types & EV_PERIODIC)
		3604	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3605	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3606	#endif
		3607
		3608	#if EV_IDLE_ENABLE
		3609	if (types & EV_IDLE)
		3610	for (j = NUMPRI; i--; )
		3611	for (i = idlecnt [j]; i--; )
		3612	cb (EV_A_ EV_IDLE, idles [j][i]);
		3613	#endif
		3614
		3615	#if EV_FORK_ENABLE
		3616	if (types & EV_FORK)
		3617	for (i = forkcnt; i--; )
		3618	if (ev_cb (forks [i]) != embed_fork_cb)
		3619	cb (EV_A_ EV_FORK, forks [i]);
		3620	#endif
		3621
		3622	#if EV_ASYNC_ENABLE
		3623	if (types & EV_ASYNC)
		3624	for (i = asynccnt; i--; )
		3625	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3626	#endif
		3627
		3628	if (types & EV_PREPARE)
		3629	for (i = preparecnt; i--; )
		3630	#if EV_EMBED_ENABLE
		3631	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3632	#endif
		3633	cb (EV_A_ EV_PREPARE, prepares [i]);
		3634
		3635	if (types & EV_CHECK)
		3636	for (i = checkcnt; i--; )
		3637	cb (EV_A_ EV_CHECK, checks [i]);
		3638
		3639	if (types & EV_SIGNAL)
		3640	for (i = 0; i < EV_NSIG - 1; ++i)
		3641	for (wl = signals [i].head; wl; )
		3642	{
		3643	wn = wl->next;
		3644	cb (EV_A_ EV_SIGNAL, wl);
		3645	wl = wn;
		3646	}
		3647
		3648	if (types & EV_CHILD)
		3649	for (i = EV_PID_HASHSIZE; i--; )
		3650	for (wl = childs [i]; wl; )
		3651	{
		3652	wn = wl->next;
		3653	cb (EV_A_ EV_CHILD, wl);
		3654	wl = wn;
		3655	}
		3656	/* EV_STAT 0x00001000 /* stat data changed */
		3657	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3658	}
		3659	#endif
		3660
2615	#if EV_MULTIPLICITY	3661	#if EV_MULTIPLICITY
2616	#include "ev_wrap.h"	3662	#include "ev_wrap.h"
2617	#endif	3663	#endif
2618		3664
2619	#ifdef __cplusplus	3665	#ifdef __cplusplus

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