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Comparing libev/ev.c (file contents):
Revision 1.242 by root, Fri May 9 14:07:19 2008 UTC vs.
Revision 1.315 by root, Wed Aug 26 17:46:22 2009 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
47	# include EV_CONFIG_H	47	# include EV_CONFIG_H
48	# else	48	# else
49	# include "config.h"	49	# include "config.h"
50	# endif	50	# endif
51		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
		64	# endif
		65
52	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
55	# endif	69	# endif
56	# ifndef EV_USE_REALTIME	70	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	71	# define EV_USE_REALTIME 0
58	# endif	72	# endif
59	# else	73	# else
60	# ifndef EV_USE_MONOTONIC	74	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	75	# define EV_USE_MONOTONIC 0
62	# endif	76	# endif
…		…
119	# else	133	# else
120	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
121	# endif	135	# endif
122	# endif	136	# endif
123		137
		138	# ifndef EV_USE_SIGNALFD
		139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		140	# define EV_USE_SIGNALFD 1
		141	# else
		142	# define EV_USE_SIGNALFD 0
		143	# endif
		144	# endif
		145
124	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
125	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
126	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD 1
127	# else	149	# else
128	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
129	# endif	151	# endif
130	# endif	152	# endif
131		153
132	#endif	154	#endif
133		155
134	#include <math.h>	156	#include <math.h>
135	#include <stdlib.h>	157	#include <stdlib.h>
136	#include <fcntl.h>	158	#include <fcntl.h>
…		…
154	#ifndef _WIN32	176	#ifndef _WIN32
155	# include <sys/time.h>	177	# include <sys/time.h>
156	# include <sys/wait.h>	178	# include <sys/wait.h>
157	# include <unistd.h>	179	# include <unistd.h>
158	#else	180	#else
		181	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	182	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	183	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	184	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	185	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	186	# endif
164	#endif	187	#endif
165		188
166	/* this block tries to deduce configuration from header-defined symbols and defaults */	189	/* this block tries to deduce configuration from header-defined symbols and defaults */
167		190
		191	/* try to deduce the maximum number of signals on this platform */
		192	#if defined (EV_NSIG)
		193	/* use what's provided */
		194	#elif defined (NSIG)
		195	# define EV_NSIG (NSIG)
		196	#elif defined(_NSIG)
		197	# define EV_NSIG (_NSIG)
		198	#elif defined (SIGMAX)
		199	# define EV_NSIG (SIGMAX+1)
		200	#elif defined (SIG_MAX)
		201	# define EV_NSIG (SIG_MAX+1)
		202	#elif defined (_SIG_MAX)
		203	# define EV_NSIG (_SIG_MAX+1)
		204	#elif defined (MAXSIG)
		205	# define EV_NSIG (MAXSIG+1)
		206	#elif defined (MAX_SIG)
		207	# define EV_NSIG (MAX_SIG+1)
		208	#elif defined (SIGARRAYSIZE)
		209	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		210	#elif defined (_sys_nsig)
		211	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		212	#else
		213	# error "unable to find value for NSIG, please report"
		214	/* to make it compile regardless, just remove the above line */
		215	# define EV_NSIG 65
		216	#endif
		217
		218	#ifndef EV_USE_CLOCK_SYSCALL
		219	# if __linux && __GLIBC__ >= 2
		220	# define EV_USE_CLOCK_SYSCALL 1
		221	# else
		222	# define EV_USE_CLOCK_SYSCALL 0
		223	# endif
		224	#endif
		225
168	#ifndef EV_USE_MONOTONIC	226	#ifndef EV_USE_MONOTONIC
		227	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		228	# define EV_USE_MONOTONIC 1
		229	# else
169	# define EV_USE_MONOTONIC 0	230	# define EV_USE_MONOTONIC 0
		231	# endif
170	#endif	232	#endif
171		233
172	#ifndef EV_USE_REALTIME	234	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	235	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	236	#endif
175		237
176	#ifndef EV_USE_NANOSLEEP	238	#ifndef EV_USE_NANOSLEEP
		239	# if _POSIX_C_SOURCE >= 199309L
		240	# define EV_USE_NANOSLEEP 1
		241	# else
177	# define EV_USE_NANOSLEEP 0	242	# define EV_USE_NANOSLEEP 0
		243	# endif
178	#endif	244	#endif
179		245
180	#ifndef EV_USE_SELECT	246	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	247	# define EV_USE_SELECT 1
182	#endif	248	#endif
…		…
235	# else	301	# else
236	# define EV_USE_EVENTFD 0	302	# define EV_USE_EVENTFD 0
237	# endif	303	# endif
238	#endif	304	#endif
239		305
		306	#ifndef EV_USE_SIGNALFD
		307	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		308	# define EV_USE_SIGNALFD 1
		309	# else
		310	# define EV_USE_SIGNALFD 0
		311	# endif
		312	#endif
		313
		314	#if 0 /* debugging */
		315	# define EV_VERIFY 3
		316	# define EV_USE_4HEAP 1
		317	# define EV_HEAP_CACHE_AT 1
		318	#endif
		319
		320	#ifndef EV_VERIFY
		321	# define EV_VERIFY !EV_MINIMAL
		322	#endif
		323
		324	#ifndef EV_USE_4HEAP
		325	# define EV_USE_4HEAP !EV_MINIMAL
		326	#endif
		327
		328	#ifndef EV_HEAP_CACHE_AT
		329	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		330	#endif
		331
		332	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		333	/* which makes programs even slower. might work on other unices, too. */
		334	#if EV_USE_CLOCK_SYSCALL
		335	# include <syscall.h>
		336	# ifdef SYS_clock_gettime
		337	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		338	# undef EV_USE_MONOTONIC
		339	# define EV_USE_MONOTONIC 1
		340	# else
		341	# undef EV_USE_CLOCK_SYSCALL
		342	# define EV_USE_CLOCK_SYSCALL 0
		343	# endif
		344	#endif
		345
240	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	346	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
241		347
242	#ifndef CLOCK_MONOTONIC	348	#ifndef CLOCK_MONOTONIC
243	# undef EV_USE_MONOTONIC	349	# undef EV_USE_MONOTONIC
244	# define EV_USE_MONOTONIC 0	350	# define EV_USE_MONOTONIC 0
…		…
259	# include <sys/select.h>	365	# include <sys/select.h>
260	# endif	366	# endif
261	#endif	367	#endif
262		368
263	#if EV_USE_INOTIFY	369	#if EV_USE_INOTIFY
		370	# include <sys/utsname.h>
		371	# include <sys/statfs.h>
264	# include <sys/inotify.h>	372	# include <sys/inotify.h>
		373	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		374	# ifndef IN_DONT_FOLLOW
		375	# undef EV_USE_INOTIFY
		376	# define EV_USE_INOTIFY 0
		377	# endif
265	#endif	378	#endif
266		379
267	#if EV_SELECT_IS_WINSOCKET	380	#if EV_SELECT_IS_WINSOCKET
268	# include <winsock.h>	381	# include <winsock.h>
269	#endif	382	#endif
270		383
271	#if EV_USE_EVENTFD	384	#if EV_USE_EVENTFD
272	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	385	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273	# include <stdint.h>	386	# include <stdint.h>
		387	# ifndef EFD_NONBLOCK
		388	# define EFD_NONBLOCK O_NONBLOCK
		389	# endif
		390	# ifndef EFD_CLOEXEC
		391	# ifdef O_CLOEXEC
		392	# define EFD_CLOEXEC O_CLOEXEC
		393	# else
		394	# define EFD_CLOEXEC 02000000
		395	# endif
		396	# endif
274	# ifdef __cplusplus	397	# ifdef __cplusplus
275	extern "C" {	398	extern "C" {
276	# endif	399	# endif
277	int eventfd (unsigned int initval, int flags);	400	int eventfd (unsigned int initval, int flags);
278	# ifdef __cplusplus	401	# ifdef __cplusplus
279	}	402	}
280	# endif	403	# endif
281	#endif	404	#endif
282		405
		406	#if EV_USE_SIGNALFD
		407	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		408	# include <stdint.h>
		409	# ifndef SFD_NONBLOCK
		410	# define SFD_NONBLOCK O_NONBLOCK
		411	# endif
		412	# ifndef SFD_CLOEXEC
		413	# ifdef O_CLOEXEC
		414	# define SFD_CLOEXEC O_CLOEXEC
		415	# else
		416	# define SFD_CLOEXEC 02000000
		417	# endif
		418	# endif
		419	# ifdef __cplusplus
		420	extern "C" {
		421	# endif
		422	int signalfd (int fd, const sigset_t *mask, int flags);
		423
		424	struct signalfd_siginfo
		425	{
		426	uint32_t ssi_signo;
		427	char pad[128 - sizeof (uint32_t)];
		428	};
		429	# ifdef __cplusplus
		430	}
		431	# endif
		432	#endif
		433
		434
283	/**/	435	/**/
		436
		437	#if EV_VERIFY >= 3
		438	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		439	#else
		440	# define EV_FREQUENT_CHECK do { } while (0)
		441	#endif
284		442
285	/*	443	/*
286	* This is used to avoid floating point rounding problems.	444	* This is used to avoid floating point rounding problems.
287	* It is added to ev_rt_now when scheduling periodics	445	* It is added to ev_rt_now when scheduling periodics
288	* to ensure progress, time-wise, even when rounding	446	* to ensure progress, time-wise, even when rounding
…		…
315	# define inline_speed static noinline	473	# define inline_speed static noinline
316	#else	474	#else
317	# define inline_speed static inline	475	# define inline_speed static inline
318	#endif	476	#endif
319		477
320	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	478	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		479
		480	#if EV_MINPRI == EV_MAXPRI
		481	# define ABSPRI(w) (((W)w), 0)
		482	#else
321	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	483	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		484	#endif
322		485
323	#define EMPTY /* required for microsofts broken pseudo-c compiler */	486	#define EMPTY /* required for microsofts broken pseudo-c compiler */
324	#define EMPTY2(a,b) /* used to suppress some warnings */	487	#define EMPTY2(a,b) /* used to suppress some warnings */
325		488
326	typedef ev_watcher *W;	489	typedef ev_watcher *W;
…		…
328	typedef ev_watcher_time *WT;	491	typedef ev_watcher_time *WT;
329		492
330	#define ev_active(w) ((W)(w))->active	493	#define ev_active(w) ((W)(w))->active
331	#define ev_at(w) ((WT)(w))->at	494	#define ev_at(w) ((WT)(w))->at
332		495
333	#if EV_USE_MONOTONIC	496	#if EV_USE_REALTIME
334	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	497	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
335	/* giving it a reasonably high chance of working on typical architetcures */	498	/* giving it a reasonably high chance of working on typical architetcures */
		499	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		500	#endif
		501
		502	#if EV_USE_MONOTONIC
336	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	503	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		504	#endif
		505
		506	#ifndef EV_FD_TO_WIN32_HANDLE
		507	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		508	#endif
		509	#ifndef EV_WIN32_HANDLE_TO_FD
		510	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0)
		511	#endif
		512	#ifndef EV_WIN32_CLOSE_FD
		513	# define EV_WIN32_CLOSE_FD(fd) close (fd)
337	#endif	514	#endif
338		515
339	#ifdef _WIN32	516	#ifdef _WIN32
340	# include "ev_win32.c"	517	# include "ev_win32.c"
341	#endif	518	#endif
…		…
349	{	526	{
350	syserr_cb = cb;	527	syserr_cb = cb;
351	}	528	}
352		529
353	static void noinline	530	static void noinline
354	syserr (const char *msg)	531	ev_syserr (const char *msg)
355	{	532	{
356	if (!msg)	533	if (!msg)
357	msg = "(libev) system error";	534	msg = "(libev) system error";
358		535
359	if (syserr_cb)	536	if (syserr_cb)
…		…
405	#define ev_malloc(size) ev_realloc (0, (size))	582	#define ev_malloc(size) ev_realloc (0, (size))
406	#define ev_free(ptr) ev_realloc ((ptr), 0)	583	#define ev_free(ptr) ev_realloc ((ptr), 0)
407		584
408	/*****************************************************************************/	585	/*****************************************************************************/
409		586
		587	/* set in reify when reification needed */
		588	#define EV_ANFD_REIFY 1
		589
		590	/* file descriptor info structure */
410	typedef struct	591	typedef struct
411	{	592	{
412	WL head;	593	WL head;
413	unsigned char events;	594	unsigned char events; /* the events watched for */
		595	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		596	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
414	unsigned char reify;	597	unsigned char unused;
		598	#if EV_USE_EPOLL
		599	unsigned int egen; /* generation counter to counter epoll bugs */
		600	#endif
415	#if EV_SELECT_IS_WINSOCKET	601	#if EV_SELECT_IS_WINSOCKET
416	SOCKET handle;	602	SOCKET handle;
417	#endif	603	#endif
418	} ANFD;	604	} ANFD;
419		605
		606	/* stores the pending event set for a given watcher */
420	typedef struct	607	typedef struct
421	{	608	{
422	W w;	609	W w;
423	int events;	610	int events; /* the pending event set for the given watcher */
424	} ANPENDING;	611	} ANPENDING;
425		612
426	#if EV_USE_INOTIFY	613	#if EV_USE_INOTIFY
427	/* hash table entry per inotify-id */	614	/* hash table entry per inotify-id */
428	typedef struct	615	typedef struct
…		…
430	WL head;	617	WL head;
431	} ANFS;	618	} ANFS;
432	#endif	619	#endif
433		620
434	/* Heap Entry */	621	/* Heap Entry */
435	#define EV_HEAP_CACHE_AT 0
436	#if EV_HEAP_CACHE_AT	622	#if EV_HEAP_CACHE_AT
		623	/* a heap element */
437	typedef struct {	624	typedef struct {
		625	ev_tstamp at;
438	WT w;	626	WT w;
439	ev_tstamp at;
440	} ANHE;	627	} ANHE;
441		628
442	#define ANHE_w(he) (he).w /* access watcher, read-write */	629	#define ANHE_w(he) (he).w /* access watcher, read-write */
443	#define ANHE_at(he) (he).at /* access cached at, read-only */	630	#define ANHE_at(he) (he).at /* access cached at, read-only */
444	#define ANHE_at_set(he) (he).at = (he).w->at /* update at from watcher */	631	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
445	#else	632	#else
		633	/* a heap element */
446	typedef WT ANHE;	634	typedef WT ANHE;
447		635
448	#define ANHE_w(he) (he)	636	#define ANHE_w(he) (he)
449	#define ANHE_at(he) (he)->at	637	#define ANHE_at(he) (he)->at
450	#define ANHE_at_set(he)	638	#define ANHE_at_cache(he)
451	#endif	639	#endif
452		640
453	#if EV_MULTIPLICITY	641	#if EV_MULTIPLICITY
454		642
455	struct ev_loop	643	struct ev_loop
…		…
474		662
475	static int ev_default_loop_ptr;	663	static int ev_default_loop_ptr;
476		664
477	#endif	665	#endif
478		666
		667	#if EV_MINIMAL < 2
		668	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		669	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		670	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		671	#else
		672	# define EV_RELEASE_CB (void)0
		673	# define EV_ACQUIRE_CB (void)0
		674	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		675	#endif
		676
		677	#define EVUNLOOP_RECURSE 0x80
		678
479	/*****************************************************************************/	679	/*****************************************************************************/
480		680
		681	#ifndef EV_HAVE_EV_TIME
481	ev_tstamp	682	ev_tstamp
482	ev_time (void)	683	ev_time (void)
483	{	684	{
484	#if EV_USE_REALTIME	685	#if EV_USE_REALTIME
		686	if (expect_true (have_realtime))
		687	{
485	struct timespec ts;	688	struct timespec ts;
486	clock_gettime (CLOCK_REALTIME, &ts);	689	clock_gettime (CLOCK_REALTIME, &ts);
487	return ts.tv_sec + ts.tv_nsec * 1e-9;	690	return ts.tv_sec + ts.tv_nsec * 1e-9;
488	#else	691	}
		692	#endif
		693
489	struct timeval tv;	694	struct timeval tv;
490	gettimeofday (&tv, 0);	695	gettimeofday (&tv, 0);
491	return tv.tv_sec + tv.tv_usec * 1e-6;	696	return tv.tv_sec + tv.tv_usec * 1e-6;
492	#endif
493	}	697	}
		698	#endif
494		699
495	ev_tstamp inline_size	700	inline_size ev_tstamp
496	get_clock (void)	701	get_clock (void)
497	{	702	{
498	#if EV_USE_MONOTONIC	703	#if EV_USE_MONOTONIC
499	if (expect_true (have_monotonic))	704	if (expect_true (have_monotonic))
500	{	705	{
…		…
533	struct timeval tv;	738	struct timeval tv;
534		739
535	tv.tv_sec = (time_t)delay;	740	tv.tv_sec = (time_t)delay;
536	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	741	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
537		742
		743	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		744	/* something not guaranteed by newer posix versions, but guaranteed */
		745	/* by older ones */
538	select (0, 0, 0, 0, &tv);	746	select (0, 0, 0, 0, &tv);
539	#endif	747	#endif
540	}	748	}
541	}	749	}
542		750
543	/*****************************************************************************/	751	/*****************************************************************************/
544		752
545	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	753	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
546		754
547	int inline_size	755	/* find a suitable new size for the given array, */
		756	/* hopefully by rounding to a ncie-to-malloc size */
		757	inline_size int
548	array_nextsize (int elem, int cur, int cnt)	758	array_nextsize (int elem, int cur, int cnt)
549	{	759	{
550	int ncur = cur + 1;	760	int ncur = cur + 1;
551		761
552	do	762	do
…		…
569	array_realloc (int elem, void *base, int *cur, int cnt)	779	array_realloc (int elem, void *base, int *cur, int cnt)
570	{	780	{
571	*cur = array_nextsize (elem, *cur, cnt);	781	*cur = array_nextsize (elem, *cur, cnt);
572	return ev_realloc (base, elem * *cur);	782	return ev_realloc (base, elem * *cur);
573	}	783	}
		784
		785	#define array_init_zero(base,count) \
		786	memset ((void *)(base), 0, sizeof (*(base)) * (count))
574		787
575	#define array_needsize(type,base,cur,cnt,init) \	788	#define array_needsize(type,base,cur,cnt,init) \
576	if (expect_false ((cnt) > (cur))) \	789	if (expect_false ((cnt) > (cur))) \
577	{ \	790	{ \
578	int ocur_ = (cur); \	791	int ocur_ = (cur); \
…		…
590	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	803	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
591	}	804	}
592	#endif	805	#endif
593		806
594	#define array_free(stem, idx) \	807	#define array_free(stem, idx) \
595	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	808	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
596		809
597	/*****************************************************************************/	810	/*****************************************************************************/
		811
		812	/* dummy callback for pending events */
		813	static void noinline
		814	pendingcb (EV_P_ ev_prepare *w, int revents)
		815	{
		816	}
598		817
599	void noinline	818	void noinline
600	ev_feed_event (EV_P_ void *w, int revents)	819	ev_feed_event (EV_P_ void *w, int revents)
601	{	820	{
602	W w_ = (W)w;	821	W w_ = (W)w;
…		…
611	pendings [pri][w_->pending - 1].w = w_;	830	pendings [pri][w_->pending - 1].w = w_;
612	pendings [pri][w_->pending - 1].events = revents;	831	pendings [pri][w_->pending - 1].events = revents;
613	}	832	}
614	}	833	}
615		834
616	void inline_speed	835	inline_speed void
		836	feed_reverse (EV_P_ W w)
		837	{
		838	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		839	rfeeds [rfeedcnt++] = w;
		840	}
		841
		842	inline_size void
		843	feed_reverse_done (EV_P_ int revents)
		844	{
		845	do
		846	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		847	while (rfeedcnt);
		848	}
		849
		850	inline_speed void
617	queue_events (EV_P_ W *events, int eventcnt, int type)	851	queue_events (EV_P_ W *events, int eventcnt, int type)
618	{	852	{
619	int i;	853	int i;
620		854
621	for (i = 0; i < eventcnt; ++i)	855	for (i = 0; i < eventcnt; ++i)
622	ev_feed_event (EV_A_ events [i], type);	856	ev_feed_event (EV_A_ events [i], type);
623	}	857	}
624		858
625	/*****************************************************************************/	859	/*****************************************************************************/
626		860
627	void inline_size	861	inline_speed void
628	anfds_init (ANFD *base, int count)
629	{
630	while (count--)
631	{
632	base->head = 0;
633	base->events = EV_NONE;
634	base->reify = 0;
635
636	++base;
637	}
638	}
639
640	void inline_speed
641	fd_event (EV_P_ int fd, int revents)	862	fd_event_nc (EV_P_ int fd, int revents)
642	{	863	{
643	ANFD *anfd = anfds + fd;	864	ANFD *anfd = anfds + fd;
644	ev_io *w;	865	ev_io *w;
645		866
646	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	867	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
650	if (ev)	871	if (ev)
651	ev_feed_event (EV_A_ (W)w, ev);	872	ev_feed_event (EV_A_ (W)w, ev);
652	}	873	}
653	}	874	}
654		875
		876	/* do not submit kernel events for fds that have reify set */
		877	/* because that means they changed while we were polling for new events */
		878	inline_speed void
		879	fd_event (EV_P_ int fd, int revents)
		880	{
		881	ANFD *anfd = anfds + fd;
		882
		883	if (expect_true (!anfd->reify))
		884	fd_event_nc (EV_A_ fd, revents);
		885	}
		886
655	void	887	void
656	ev_feed_fd_event (EV_P_ int fd, int revents)	888	ev_feed_fd_event (EV_P_ int fd, int revents)
657	{	889	{
658	if (fd >= 0 && fd < anfdmax)	890	if (fd >= 0 && fd < anfdmax)
659	fd_event (EV_A_ fd, revents);	891	fd_event_nc (EV_A_ fd, revents);
660	}	892	}
661		893
662	void inline_size	894	/* make sure the external fd watch events are in-sync */
		895	/* with the kernel/libev internal state */
		896	inline_size void
663	fd_reify (EV_P)	897	fd_reify (EV_P)
664	{	898	{
665	int i;	899	int i;
666		900
667	for (i = 0; i < fdchangecnt; ++i)	901	for (i = 0; i < fdchangecnt; ++i)
…		…
676	events |= (unsigned char)w->events;	910	events |= (unsigned char)w->events;
677		911
678	#if EV_SELECT_IS_WINSOCKET	912	#if EV_SELECT_IS_WINSOCKET
679	if (events)	913	if (events)
680	{	914	{
681	unsigned long argp;	915	unsigned long arg;
682	#ifdef EV_FD_TO_WIN32_HANDLE
683	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	916	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
684	#else
685	anfd->handle = _get_osfhandle (fd);
686	#endif
687	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	917	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
688	}	918	}
689	#endif	919	#endif
690		920
691	{	921	{
692	unsigned char o_events = anfd->events;	922	unsigned char o_events = anfd->events;
693	unsigned char o_reify = anfd->reify;	923	unsigned char o_reify = anfd->reify;
694		924
695	anfd->reify = 0;	925	anfd->reify = 0;
696	anfd->events = events;	926	anfd->events = events;
697		927
698	if (o_events != events || o_reify & EV_IOFDSET)	928	if (o_events != events || o_reify & EV__IOFDSET)
699	backend_modify (EV_A_ fd, o_events, events);	929	backend_modify (EV_A_ fd, o_events, events);
700	}	930	}
701	}	931	}
702		932
703	fdchangecnt = 0;	933	fdchangecnt = 0;
704	}	934	}
705		935
706	void inline_size	936	/* something about the given fd changed */
		937	inline_size void
707	fd_change (EV_P_ int fd, int flags)	938	fd_change (EV_P_ int fd, int flags)
708	{	939	{
709	unsigned char reify = anfds [fd].reify;	940	unsigned char reify = anfds [fd].reify;
710	anfds [fd].reify |= flags;	941	anfds [fd].reify |= flags;
711		942
…		…
715	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	946	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
716	fdchanges [fdchangecnt - 1] = fd;	947	fdchanges [fdchangecnt - 1] = fd;
717	}	948	}
718	}	949	}
719		950
720	void inline_speed	951	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		952	inline_speed void
721	fd_kill (EV_P_ int fd)	953	fd_kill (EV_P_ int fd)
722	{	954	{
723	ev_io *w;	955	ev_io *w;
724		956
725	while ((w = (ev_io *)anfds [fd].head))	957	while ((w = (ev_io *)anfds [fd].head))
…		…
727	ev_io_stop (EV_A_ w);	959	ev_io_stop (EV_A_ w);
728	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	960	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
729	}	961	}
730	}	962	}
731		963
732	int inline_size	964	/* check whether the given fd is atcually valid, for error recovery */
		965	inline_size int
733	fd_valid (int fd)	966	fd_valid (int fd)
734	{	967	{
735	#ifdef _WIN32	968	#ifdef _WIN32
736	return _get_osfhandle (fd) != -1;	969	return _get_osfhandle (fd) != -1;
737	#else	970	#else
…		…
745	{	978	{
746	int fd;	979	int fd;
747		980
748	for (fd = 0; fd < anfdmax; ++fd)	981	for (fd = 0; fd < anfdmax; ++fd)
749	if (anfds [fd].events)	982	if (anfds [fd].events)
750	if (!fd_valid (fd) == -1 && errno == EBADF)	983	if (!fd_valid (fd) && errno == EBADF)
751	fd_kill (EV_A_ fd);	984	fd_kill (EV_A_ fd);
752	}	985	}
753		986
754	/* called on ENOMEM in select/poll to kill some fds and retry */	987	/* called on ENOMEM in select/poll to kill some fds and retry */
755	static void noinline	988	static void noinline
…		…
759		992
760	for (fd = anfdmax; fd--; )	993	for (fd = anfdmax; fd--; )
761	if (anfds [fd].events)	994	if (anfds [fd].events)
762	{	995	{
763	fd_kill (EV_A_ fd);	996	fd_kill (EV_A_ fd);
764	return;	997	break;
765	}	998	}
766	}	999	}
767		1000
768	/* usually called after fork if backend needs to re-arm all fds from scratch */	1001	/* usually called after fork if backend needs to re-arm all fds from scratch */
769	static void noinline	1002	static void noinline
…		…
773		1006
774	for (fd = 0; fd < anfdmax; ++fd)	1007	for (fd = 0; fd < anfdmax; ++fd)
775	if (anfds [fd].events)	1008	if (anfds [fd].events)
776	{	1009	{
777	anfds [fd].events = 0;	1010	anfds [fd].events = 0;
		1011	anfds [fd].emask = 0;
778	fd_change (EV_A_ fd, EV_IOFDSET | 1);	1012	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
779	}	1013	}
780	}	1014	}
781		1015
782	/*****************************************************************************/	1016	/*****************************************************************************/
783		1017
…		…
791	* at the moment we allow libev the luxury of two heaps,	1025	* at the moment we allow libev the luxury of two heaps,
792	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap	1026	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
793	* which is more cache-efficient.	1027	* which is more cache-efficient.
794	* the difference is about 5% with 50000+ watchers.	1028	* the difference is about 5% with 50000+ watchers.
795	*/	1029	*/
796	#define EV_USE_4HEAP !EV_MINIMAL
797	#if EV_USE_4HEAP	1030	#if EV_USE_4HEAP
798		1031
799	#define DHEAP 4	1032	#define DHEAP 4
800	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	1033	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
801		1034	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
802	/* towards the root */	1035	#define UPHEAP_DONE(p,k) ((p) == (k))
803	void inline_speed
804	upheap (ANHE *heap, int k)
805	{
806	ANHE he = heap [k];
807
808	for (;;)
809	{
810	int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
811
812	if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
813	break;
814
815	heap [k] = heap [p];
816	ev_active (ANHE_w (heap [k])) = k;
817	k = p;
818	}
819
820	ev_active (ANHE_w (he)) = k;
821	heap [k] = he;
822	}
823		1036
824	/* away from the root */	1037	/* away from the root */
825	void inline_speed	1038	inline_speed void
826	downheap (ANHE *heap, int N, int k)	1039	downheap (ANHE *heap, int N, int k)
827	{	1040	{
828	ANHE he = heap [k];	1041	ANHE he = heap [k];
829	ANHE *E = heap + N + HEAP0;	1042	ANHE *E = heap + N + HEAP0;
830		1043
831	for (;;)	1044	for (;;)
832	{	1045	{
833	ev_tstamp minat;	1046	ev_tstamp minat;
834	ANHE *minpos;	1047	ANHE *minpos;
835	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0;	1048	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
836		1049
837	// find minimum child	1050	/* find minimum child */
838	if (expect_true (pos + DHEAP - 1 < E))	1051	if (expect_true (pos + DHEAP - 1 < E))
839	{	1052	{
840	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));	1053	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
841	if (ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));	1054	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
842	if (ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));	1055	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
843	if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));	1056	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
844	}	1057	}
845	else if (pos < E)	1058	else if (pos < E)
846	{	1059	{
847	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));	1060	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
848	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));	1061	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
…		…
853	break;	1066	break;
854		1067
855	if (ANHE_at (he) <= minat)	1068	if (ANHE_at (he) <= minat)
856	break;	1069	break;
857		1070
		1071	heap [k] = *minpos;
858	ev_active (ANHE_w (*minpos)) = k;	1072	ev_active (ANHE_w (*minpos)) = k;
859	heap [k] = *minpos;
860		1073
861	k = minpos - heap;	1074	k = minpos - heap;
862	}	1075	}
863		1076
		1077	heap [k] = he;
864	ev_active (ANHE_w (he)) = k;	1078	ev_active (ANHE_w (he)) = k;
865	heap [k] = he;
866	}	1079	}
867		1080
868	#else // 4HEAP	1081	#else /* 4HEAP */
869		1082
870	#define HEAP0 1	1083	#define HEAP0 1
		1084	#define HPARENT(k) ((k) >> 1)
		1085	#define UPHEAP_DONE(p,k) (!(p))
871		1086
872	/* towards the root */	1087	/* away from the root */
873	void inline_speed	1088	inline_speed void
874	upheap (ANHE *heap, int k)	1089	downheap (ANHE *heap, int N, int k)
875	{	1090	{
876	ANHE he = heap [k];	1091	ANHE he = heap [k];
877		1092
878	for (;;)	1093	for (;;)
879	{	1094	{
880	int p = k >> 1;	1095	int c = k << 1;
881		1096
882	/* maybe we could use a dummy element at heap [0]? */	1097	if (c >= N + HEAP0)
883	if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
884	break;	1098	break;
885		1099
886	heap [k] = heap [p];
887	ev_active (ANHE_w (heap [k])) = k;
888	k = p;
889	}
890
891	heap [k] = w;
892	ev_active (ANHE_w (heap [k])) = k;
893	}
894
895	/* away from the root */
896	void inline_speed
897	downheap (ANHE *heap, int N, int k)
898	{
899	ANHE he = heap [k];
900
901	for (;;)
902	{
903	int c = k << 1;
904
905	if (c > N)
906	break;
907
908	c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1100	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
909	? 1 : 0;	1101	? 1 : 0;
910		1102
911	if (w->at <= ANHE_at (heap [c]))	1103	if (ANHE_at (he) <= ANHE_at (heap [c]))
912	break;	1104	break;
913		1105
914	heap [k] = heap [c];	1106	heap [k] = heap [c];
915	ev_active (ANHE_w (heap [k])) = k;	1107	ev_active (ANHE_w (heap [k])) = k;
916		1108
…		…
920	heap [k] = he;	1112	heap [k] = he;
921	ev_active (ANHE_w (he)) = k;	1113	ev_active (ANHE_w (he)) = k;
922	}	1114	}
923	#endif	1115	#endif
924		1116
925	void inline_size	1117	/* towards the root */
		1118	inline_speed void
		1119	upheap (ANHE *heap, int k)
		1120	{
		1121	ANHE he = heap [k];
		1122
		1123	for (;;)
		1124	{
		1125	int p = HPARENT (k);
		1126
		1127	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1128	break;
		1129
		1130	heap [k] = heap [p];
		1131	ev_active (ANHE_w (heap [k])) = k;
		1132	k = p;
		1133	}
		1134
		1135	heap [k] = he;
		1136	ev_active (ANHE_w (he)) = k;
		1137	}
		1138
		1139	/* move an element suitably so it is in a correct place */
		1140	inline_size void
926	adjustheap (ANHE *heap, int N, int k)	1141	adjustheap (ANHE *heap, int N, int k)
927	{	1142	{
		1143	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
928	upheap (heap, k);	1144	upheap (heap, k);
		1145	else
929	downheap (heap, N, k);	1146	downheap (heap, N, k);
		1147	}
		1148
		1149	/* rebuild the heap: this function is used only once and executed rarely */
		1150	inline_size void
		1151	reheap (ANHE *heap, int N)
		1152	{
		1153	int i;
		1154
		1155	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1156	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1157	for (i = 0; i < N; ++i)
		1158	upheap (heap, i + HEAP0);
930	}	1159	}
931		1160
932	/*****************************************************************************/	1161	/*****************************************************************************/
933		1162
		1163	/* associate signal watchers to a signal signal */
934	typedef struct	1164	typedef struct
935	{	1165	{
		1166	EV_ATOMIC_T pending;
		1167	#if EV_MULTIPLICITY
		1168	EV_P;
		1169	#endif
936	WL head;	1170	WL head;
937	EV_ATOMIC_T gotsig;
938	} ANSIG;	1171	} ANSIG;
939		1172
940	static ANSIG *signals;	1173	static ANSIG signals [EV_NSIG - 1];
941	static int signalmax;
942
943	static EV_ATOMIC_T gotsig;
944
945	void inline_size
946	signals_init (ANSIG *base, int count)
947	{
948	while (count--)
949	{
950	base->head = 0;
951	base->gotsig = 0;
952
953	++base;
954	}
955	}
956		1174
957	/*****************************************************************************/	1175	/*****************************************************************************/
958		1176
959	void inline_speed	1177	/* used to prepare libev internal fd's */
		1178	/* this is not fork-safe */
		1179	inline_speed void
960	fd_intern (int fd)	1180	fd_intern (int fd)
961	{	1181	{
962	#ifdef _WIN32	1182	#ifdef _WIN32
963	int arg = 1;	1183	unsigned long arg = 1;
964	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1184	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
965	#else	1185	#else
966	fcntl (fd, F_SETFD, FD_CLOEXEC);	1186	fcntl (fd, F_SETFD, FD_CLOEXEC);
967	fcntl (fd, F_SETFL, O_NONBLOCK);	1187	fcntl (fd, F_SETFL, O_NONBLOCK);
968	#endif	1188	#endif
969	}	1189	}
970		1190
971	static void noinline	1191	static void noinline
972	evpipe_init (EV_P)	1192	evpipe_init (EV_P)
973	{	1193	{
974	if (!ev_is_active (&pipeev))	1194	if (!ev_is_active (&pipe_w))
975	{	1195	{
976	#if EV_USE_EVENTFD	1196	#if EV_USE_EVENTFD
		1197	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1198	if (evfd < 0 && errno == EINVAL)
977	if ((evfd = eventfd (0, 0)) >= 0)	1199	evfd = eventfd (0, 0);
		1200
		1201	if (evfd >= 0)
978	{	1202	{
979	evpipe [0] = -1;	1203	evpipe [0] = -1;
980	fd_intern (evfd);	1204	fd_intern (evfd); /* doing it twice doesn't hurt */
981	ev_io_set (&pipeev, evfd, EV_READ);	1205	ev_io_set (&pipe_w, evfd, EV_READ);
982	}	1206	}
983	else	1207	else
984	#endif	1208	#endif
985	{	1209	{
986	while (pipe (evpipe))	1210	while (pipe (evpipe))
987	syserr ("(libev) error creating signal/async pipe");	1211	ev_syserr ("(libev) error creating signal/async pipe");
988		1212
989	fd_intern (evpipe [0]);	1213	fd_intern (evpipe [0]);
990	fd_intern (evpipe [1]);	1214	fd_intern (evpipe [1]);
991	ev_io_set (&pipeev, evpipe [0], EV_READ);	1215	ev_io_set (&pipe_w, evpipe [0], EV_READ);
992	}	1216	}
993		1217
994	ev_io_start (EV_A_ &pipeev);	1218	ev_io_start (EV_A_ &pipe_w);
995	ev_unref (EV_A); /* watcher should not keep loop alive */	1219	ev_unref (EV_A); /* watcher should not keep loop alive */
996	}	1220	}
997	}	1221	}
998		1222
999	void inline_size	1223	inline_size void
1000	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1224	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1001	{	1225	{
1002	if (!*flag)	1226	if (!*flag)
1003	{	1227	{
1004	int old_errno = errno; /* save errno because write might clobber it */	1228	int old_errno = errno; /* save errno because write might clobber it */
…		…
1017		1241
1018	errno = old_errno;	1242	errno = old_errno;
1019	}	1243	}
1020	}	1244	}
1021		1245
		1246	/* called whenever the libev signal pipe */
		1247	/* got some events (signal, async) */
1022	static void	1248	static void
1023	pipecb (EV_P_ ev_io *iow, int revents)	1249	pipecb (EV_P_ ev_io *iow, int revents)
1024	{	1250	{
		1251	int i;
		1252
1025	#if EV_USE_EVENTFD	1253	#if EV_USE_EVENTFD
1026	if (evfd >= 0)	1254	if (evfd >= 0)
1027	{	1255	{
1028	uint64_t counter;	1256	uint64_t counter;
1029	read (evfd, &counter, sizeof (uint64_t));	1257	read (evfd, &counter, sizeof (uint64_t));
…		…
1033	{	1261	{
1034	char dummy;	1262	char dummy;
1035	read (evpipe [0], &dummy, 1);	1263	read (evpipe [0], &dummy, 1);
1036	}	1264	}
1037		1265
1038	if (gotsig && ev_is_default_loop (EV_A))	1266	if (sig_pending)
1039	{	1267	{
1040	int signum;	1268	sig_pending = 0;
1041	gotsig = 0;
1042		1269
1043	for (signum = signalmax; signum--; )	1270	for (i = EV_NSIG - 1; i--; )
1044	if (signals [signum].gotsig)	1271	if (expect_false (signals [i].pending))
1045	ev_feed_signal_event (EV_A_ signum + 1);	1272	ev_feed_signal_event (EV_A_ i + 1);
1046	}	1273	}
1047		1274
1048	#if EV_ASYNC_ENABLE	1275	#if EV_ASYNC_ENABLE
1049	if (gotasync)	1276	if (async_pending)
1050	{	1277	{
1051	int i;	1278	async_pending = 0;
1052	gotasync = 0;
1053		1279
1054	for (i = asynccnt; i--; )	1280	for (i = asynccnt; i--; )
1055	if (asyncs [i]->sent)	1281	if (asyncs [i]->sent)
1056	{	1282	{
1057	asyncs [i]->sent = 0;	1283	asyncs [i]->sent = 0;
…		…
1065		1291
1066	static void	1292	static void
1067	ev_sighandler (int signum)	1293	ev_sighandler (int signum)
1068	{	1294	{
1069	#if EV_MULTIPLICITY	1295	#if EV_MULTIPLICITY
1070	struct ev_loop *loop = &default_loop_struct;	1296	EV_P = signals [signum - 1].loop;
1071	#endif	1297	#endif
1072		1298
1073	#if _WIN32	1299	#if _WIN32
1074	signal (signum, ev_sighandler);	1300	signal (signum, ev_sighandler);
1075	#endif	1301	#endif
1076		1302
1077	signals [signum - 1].gotsig = 1;	1303	signals [signum - 1].pending = 1;
1078	evpipe_write (EV_A_ &gotsig);	1304	evpipe_write (EV_A_ &sig_pending);
1079	}	1305	}
1080		1306
1081	void noinline	1307	void noinline
1082	ev_feed_signal_event (EV_P_ int signum)	1308	ev_feed_signal_event (EV_P_ int signum)
1083	{	1309	{
1084	WL w;	1310	WL w;
1085		1311
		1312	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1313	return;
		1314
		1315	--signum;
		1316
1086	#if EV_MULTIPLICITY	1317	#if EV_MULTIPLICITY
1087	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1318	/* it is permissible to try to feed a signal to the wrong loop */
1088	#endif	1319	/* or, likely more useful, feeding a signal nobody is waiting for */
1089		1320
1090	--signum;	1321	if (expect_false (signals [signum].loop != EV_A))
1091
1092	if (signum < 0 || signum >= signalmax)
1093	return;	1322	return;
		1323	#endif
1094		1324
1095	signals [signum].gotsig = 0;	1325	signals [signum].pending = 0;
1096		1326
1097	for (w = signals [signum].head; w; w = w->next)	1327	for (w = signals [signum].head; w; w = w->next)
1098	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1328	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1099	}	1329	}
1100		1330
		1331	#if EV_USE_SIGNALFD
		1332	static void
		1333	sigfdcb (EV_P_ ev_io *iow, int revents)
		1334	{
		1335	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1336
		1337	for (;;)
		1338	{
		1339	ssize_t res = read (sigfd, si, sizeof (si));
		1340
		1341	/* not ISO-C, as res might be -1, but works with SuS */
		1342	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1343	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1344
		1345	if (res < (ssize_t)sizeof (si))
		1346	break;
		1347	}
		1348	}
		1349	#endif
		1350
1101	/*****************************************************************************/	1351	/*****************************************************************************/
1102		1352
1103	static WL childs [EV_PID_HASHSIZE];	1353	static WL childs [EV_PID_HASHSIZE];
1104		1354
1105	#ifndef _WIN32	1355	#ifndef _WIN32
…		…
1108		1358
1109	#ifndef WIFCONTINUED	1359	#ifndef WIFCONTINUED
1110	# define WIFCONTINUED(status) 0	1360	# define WIFCONTINUED(status) 0
1111	#endif	1361	#endif
1112		1362
1113	void inline_speed	1363	/* handle a single child status event */
		1364	inline_speed void
1114	child_reap (EV_P_ int chain, int pid, int status)	1365	child_reap (EV_P_ int chain, int pid, int status)
1115	{	1366	{
1116	ev_child *w;	1367	ev_child *w;
1117	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1368	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1118		1369
…		…
1131		1382
1132	#ifndef WCONTINUED	1383	#ifndef WCONTINUED
1133	# define WCONTINUED 0	1384	# define WCONTINUED 0
1134	#endif	1385	#endif
1135		1386
		1387	/* called on sigchld etc., calls waitpid */
1136	static void	1388	static void
1137	childcb (EV_P_ ev_signal *sw, int revents)	1389	childcb (EV_P_ ev_signal *sw, int revents)
1138	{	1390	{
1139	int pid, status;	1391	int pid, status;
1140		1392
…		…
1221	/* kqueue is borked on everything but netbsd apparently */	1473	/* kqueue is borked on everything but netbsd apparently */
1222	/* it usually doesn't work correctly on anything but sockets and pipes */	1474	/* it usually doesn't work correctly on anything but sockets and pipes */
1223	flags &= ~EVBACKEND_KQUEUE;	1475	flags &= ~EVBACKEND_KQUEUE;
1224	#endif	1476	#endif
1225	#ifdef __APPLE__	1477	#ifdef __APPLE__
1226	// flags &= ~EVBACKEND_KQUEUE; for documentation	1478	/* only select works correctly on that "unix-certified" platform */
1227	flags &= ~EVBACKEND_POLL;	1479	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1480	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1228	#endif	1481	#endif
1229		1482
1230	return flags;	1483	return flags;
1231	}	1484	}
1232		1485
…		…
1246	ev_backend (EV_P)	1499	ev_backend (EV_P)
1247	{	1500	{
1248	return backend;	1501	return backend;
1249	}	1502	}
1250		1503
		1504	#if EV_MINIMAL < 2
1251	unsigned int	1505	unsigned int
1252	ev_loop_count (EV_P)	1506	ev_loop_count (EV_P)
1253	{	1507	{
1254	return loop_count;	1508	return loop_count;
1255	}	1509	}
1256		1510
		1511	unsigned int
		1512	ev_loop_depth (EV_P)
		1513	{
		1514	return loop_depth;
		1515	}
		1516
1257	void	1517	void
1258	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1518	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1259	{	1519	{
1260	io_blocktime = interval;	1520	io_blocktime = interval;
1261	}	1521	}
…		…
1264	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1524	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1265	{	1525	{
1266	timeout_blocktime = interval;	1526	timeout_blocktime = interval;
1267	}	1527	}
1268		1528
		1529	void
		1530	ev_set_userdata (EV_P_ void *data)
		1531	{
		1532	userdata = data;
		1533	}
		1534
		1535	void *
		1536	ev_userdata (EV_P)
		1537	{
		1538	return userdata;
		1539	}
		1540
		1541	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1542	{
		1543	invoke_cb = invoke_pending_cb;
		1544	}
		1545
		1546	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1547	{
		1548	release_cb = release;
		1549	acquire_cb = acquire;
		1550	}
		1551	#endif
		1552
		1553	/* initialise a loop structure, must be zero-initialised */
1269	static void noinline	1554	static void noinline
1270	loop_init (EV_P_ unsigned int flags)	1555	loop_init (EV_P_ unsigned int flags)
1271	{	1556	{
1272	if (!backend)	1557	if (!backend)
1273	{	1558	{
		1559	#if EV_USE_REALTIME
		1560	if (!have_realtime)
		1561	{
		1562	struct timespec ts;
		1563
		1564	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1565	have_realtime = 1;
		1566	}
		1567	#endif
		1568
1274	#if EV_USE_MONOTONIC	1569	#if EV_USE_MONOTONIC
		1570	if (!have_monotonic)
1275	{	1571	{
1276	struct timespec ts;	1572	struct timespec ts;
		1573
1277	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1574	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1278	have_monotonic = 1;	1575	have_monotonic = 1;
1279	}	1576	}
1280	#endif	1577	#endif
		1578
		1579	/* pid check not overridable via env */
		1580	#ifndef _WIN32
		1581	if (flags & EVFLAG_FORKCHECK)
		1582	curpid = getpid ();
		1583	#endif
		1584
		1585	if (!(flags & EVFLAG_NOENV)
		1586	&& !enable_secure ()
		1587	&& getenv ("LIBEV_FLAGS"))
		1588	flags = atoi (getenv ("LIBEV_FLAGS"));
1281		1589
1282	ev_rt_now = ev_time ();	1590	ev_rt_now = ev_time ();
1283	mn_now = get_clock ();	1591	mn_now = get_clock ();
1284	now_floor = mn_now;	1592	now_floor = mn_now;
1285	rtmn_diff = ev_rt_now - mn_now;	1593	rtmn_diff = ev_rt_now - mn_now;
		1594	#if EV_MINIMAL < 2
		1595	invoke_cb = ev_invoke_pending;
		1596	#endif
1286		1597
1287	io_blocktime = 0.;	1598	io_blocktime = 0.;
1288	timeout_blocktime = 0.;	1599	timeout_blocktime = 0.;
1289	backend = 0;	1600	backend = 0;
1290	backend_fd = -1;	1601	backend_fd = -1;
1291	gotasync = 0;	1602	sig_pending = 0;
		1603	#if EV_ASYNC_ENABLE
		1604	async_pending = 0;
		1605	#endif
1292	#if EV_USE_INOTIFY	1606	#if EV_USE_INOTIFY
1293	fs_fd = -2;	1607	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1294	#endif	1608	#endif
1295		1609	#if EV_USE_SIGNALFD
1296	/* pid check not overridable via env */	1610	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1297	#ifndef _WIN32
1298	if (flags & EVFLAG_FORKCHECK)
1299	curpid = getpid ();
1300	#endif	1611	#endif
1301
1302	if (!(flags & EVFLAG_NOENV)
1303	&& !enable_secure ()
1304	&& getenv ("LIBEV_FLAGS"))
1305	flags = atoi (getenv ("LIBEV_FLAGS"));
1306		1612
1307	if (!(flags & 0x0000ffffU))	1613	if (!(flags & 0x0000ffffU))
1308	flags |= ev_recommended_backends ();	1614	flags |= ev_recommended_backends ();
1309		1615
1310	#if EV_USE_PORT	1616	#if EV_USE_PORT
…		…
1321	#endif	1627	#endif
1322	#if EV_USE_SELECT	1628	#if EV_USE_SELECT
1323	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1629	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1324	#endif	1630	#endif
1325		1631
		1632	ev_prepare_init (&pending_w, pendingcb);
		1633
1326	ev_init (&pipeev, pipecb);	1634	ev_init (&pipe_w, pipecb);
1327	ev_set_priority (&pipeev, EV_MAXPRI);	1635	ev_set_priority (&pipe_w, EV_MAXPRI);
1328	}	1636	}
1329	}	1637	}
1330		1638
		1639	/* free up a loop structure */
1331	static void noinline	1640	static void noinline
1332	loop_destroy (EV_P)	1641	loop_destroy (EV_P)
1333	{	1642	{
1334	int i;	1643	int i;
1335		1644
1336	if (ev_is_active (&pipeev))	1645	if (ev_is_active (&pipe_w))
1337	{	1646	{
1338	ev_ref (EV_A); /* signal watcher */	1647	/*ev_ref (EV_A);*/
1339	ev_io_stop (EV_A_ &pipeev);	1648	/*ev_io_stop (EV_A_ &pipe_w);*/
1340		1649
1341	#if EV_USE_EVENTFD	1650	#if EV_USE_EVENTFD
1342	if (evfd >= 0)	1651	if (evfd >= 0)
1343	close (evfd);	1652	close (evfd);
1344	#endif	1653	#endif
1345		1654
1346	if (evpipe [0] >= 0)	1655	if (evpipe [0] >= 0)
1347	{	1656	{
1348	close (evpipe [0]);	1657	EV_WIN32_CLOSE_FD (evpipe [0]);
1349	close (evpipe [1]);	1658	EV_WIN32_CLOSE_FD (evpipe [1]);
1350	}	1659	}
1351	}	1660	}
		1661
		1662	#if EV_USE_SIGNALFD
		1663	if (ev_is_active (&sigfd_w))
		1664	{
		1665	/*ev_ref (EV_A);*/
		1666	/*ev_io_stop (EV_A_ &sigfd_w);*/
		1667
		1668	close (sigfd);
		1669	}
		1670	#endif
1352		1671
1353	#if EV_USE_INOTIFY	1672	#if EV_USE_INOTIFY
1354	if (fs_fd >= 0)	1673	if (fs_fd >= 0)
1355	close (fs_fd);	1674	close (fs_fd);
1356	#endif	1675	#endif
…		…
1380	#if EV_IDLE_ENABLE	1699	#if EV_IDLE_ENABLE
1381	array_free (idle, [i]);	1700	array_free (idle, [i]);
1382	#endif	1701	#endif
1383	}	1702	}
1384		1703
1385	ev_free (anfds); anfdmax = 0;	1704	ev_free (anfds); anfds = 0; anfdmax = 0;
1386		1705
1387	/* have to use the microsoft-never-gets-it-right macro */	1706	/* have to use the microsoft-never-gets-it-right macro */
		1707	array_free (rfeed, EMPTY);
1388	array_free (fdchange, EMPTY);	1708	array_free (fdchange, EMPTY);
1389	array_free (timer, EMPTY);	1709	array_free (timer, EMPTY);
1390	#if EV_PERIODIC_ENABLE	1710	#if EV_PERIODIC_ENABLE
1391	array_free (periodic, EMPTY);	1711	array_free (periodic, EMPTY);
1392	#endif	1712	#endif
…		…
1401		1721
1402	backend = 0;	1722	backend = 0;
1403	}	1723	}
1404		1724
1405	#if EV_USE_INOTIFY	1725	#if EV_USE_INOTIFY
1406	void inline_size infy_fork (EV_P);	1726	inline_size void infy_fork (EV_P);
1407	#endif	1727	#endif
1408		1728
1409	void inline_size	1729	inline_size void
1410	loop_fork (EV_P)	1730	loop_fork (EV_P)
1411	{	1731	{
1412	#if EV_USE_PORT	1732	#if EV_USE_PORT
1413	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1733	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1414	#endif	1734	#endif
…		…
1420	#endif	1740	#endif
1421	#if EV_USE_INOTIFY	1741	#if EV_USE_INOTIFY
1422	infy_fork (EV_A);	1742	infy_fork (EV_A);
1423	#endif	1743	#endif
1424		1744
1425	if (ev_is_active (&pipeev))	1745	if (ev_is_active (&pipe_w))
1426	{	1746	{
1427	/* this "locks" the handlers against writing to the pipe */	1747	/* this "locks" the handlers against writing to the pipe */
1428	/* while we modify the fd vars */	1748	/* while we modify the fd vars */
1429	gotsig = 1;	1749	sig_pending = 1;
1430	#if EV_ASYNC_ENABLE	1750	#if EV_ASYNC_ENABLE
1431	gotasync = 1;	1751	async_pending = 1;
1432	#endif	1752	#endif
1433		1753
1434	ev_ref (EV_A);	1754	ev_ref (EV_A);
1435	ev_io_stop (EV_A_ &pipeev);	1755	ev_io_stop (EV_A_ &pipe_w);
1436		1756
1437	#if EV_USE_EVENTFD	1757	#if EV_USE_EVENTFD
1438	if (evfd >= 0)	1758	if (evfd >= 0)
1439	close (evfd);	1759	close (evfd);
1440	#endif	1760	#endif
1441		1761
1442	if (evpipe [0] >= 0)	1762	if (evpipe [0] >= 0)
1443	{	1763	{
1444	close (evpipe [0]);	1764	EV_WIN32_CLOSE_FD (evpipe [0]);
1445	close (evpipe [1]);	1765	EV_WIN32_CLOSE_FD (evpipe [1]);
1446	}	1766	}
1447		1767
1448	evpipe_init (EV_A);	1768	evpipe_init (EV_A);
1449	/* now iterate over everything, in case we missed something */	1769	/* now iterate over everything, in case we missed something */
1450	pipecb (EV_A_ &pipeev, EV_READ);	1770	pipecb (EV_A_ &pipe_w, EV_READ);
1451	}	1771	}
1452		1772
1453	postfork = 0;	1773	postfork = 0;
1454	}	1774	}
1455		1775
1456	#if EV_MULTIPLICITY	1776	#if EV_MULTIPLICITY
		1777
1457	struct ev_loop *	1778	struct ev_loop *
1458	ev_loop_new (unsigned int flags)	1779	ev_loop_new (unsigned int flags)
1459	{	1780	{
1460	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1781	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1461		1782
1462	memset (loop, 0, sizeof (struct ev_loop));	1783	memset (EV_A, 0, sizeof (struct ev_loop));
1463
1464	loop_init (EV_A_ flags);	1784	loop_init (EV_A_ flags);
1465		1785
1466	if (ev_backend (EV_A))	1786	if (ev_backend (EV_A))
1467	return loop;	1787	return EV_A;
1468		1788
1469	return 0;	1789	return 0;
1470	}	1790	}
1471		1791
1472	void	1792	void
…		…
1478		1798
1479	void	1799	void
1480	ev_loop_fork (EV_P)	1800	ev_loop_fork (EV_P)
1481	{	1801	{
1482	postfork = 1; /* must be in line with ev_default_fork */	1802	postfork = 1; /* must be in line with ev_default_fork */
		1803	}
		1804	#endif /* multiplicity */
		1805
		1806	#if EV_VERIFY
		1807	static void noinline
		1808	verify_watcher (EV_P_ W w)
		1809	{
		1810	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1811
		1812	if (w->pending)
		1813	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1814	}
		1815
		1816	static void noinline
		1817	verify_heap (EV_P_ ANHE *heap, int N)
		1818	{
		1819	int i;
		1820
		1821	for (i = HEAP0; i < N + HEAP0; ++i)
		1822	{
		1823	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1824	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1825	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1826
		1827	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1828	}
		1829	}
		1830
		1831	static void noinline
		1832	array_verify (EV_P_ W *ws, int cnt)
		1833	{
		1834	while (cnt--)
		1835	{
		1836	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1837	verify_watcher (EV_A_ ws [cnt]);
		1838	}
		1839	}
		1840	#endif
		1841
		1842	#if EV_MINIMAL < 2
		1843	void
		1844	ev_loop_verify (EV_P)
		1845	{
		1846	#if EV_VERIFY
		1847	int i;
		1848	WL w;
		1849
		1850	assert (activecnt >= -1);
		1851
		1852	assert (fdchangemax >= fdchangecnt);
		1853	for (i = 0; i < fdchangecnt; ++i)
		1854	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1855
		1856	assert (anfdmax >= 0);
		1857	for (i = 0; i < anfdmax; ++i)
		1858	for (w = anfds [i].head; w; w = w->next)
		1859	{
		1860	verify_watcher (EV_A_ (W)w);
		1861	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1862	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1863	}
		1864
		1865	assert (timermax >= timercnt);
		1866	verify_heap (EV_A_ timers, timercnt);
		1867
		1868	#if EV_PERIODIC_ENABLE
		1869	assert (periodicmax >= periodiccnt);
		1870	verify_heap (EV_A_ periodics, periodiccnt);
		1871	#endif
		1872
		1873	for (i = NUMPRI; i--; )
		1874	{
		1875	assert (pendingmax [i] >= pendingcnt [i]);
		1876	#if EV_IDLE_ENABLE
		1877	assert (idleall >= 0);
		1878	assert (idlemax [i] >= idlecnt [i]);
		1879	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1880	#endif
		1881	}
		1882
		1883	#if EV_FORK_ENABLE
		1884	assert (forkmax >= forkcnt);
		1885	array_verify (EV_A_ (W *)forks, forkcnt);
		1886	#endif
		1887
		1888	#if EV_ASYNC_ENABLE
		1889	assert (asyncmax >= asynccnt);
		1890	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1891	#endif
		1892
		1893	assert (preparemax >= preparecnt);
		1894	array_verify (EV_A_ (W *)prepares, preparecnt);
		1895
		1896	assert (checkmax >= checkcnt);
		1897	array_verify (EV_A_ (W *)checks, checkcnt);
		1898
		1899	# if 0
		1900	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1901	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		1902	# endif
		1903	#endif
1483	}	1904	}
1484	#endif	1905	#endif
1485		1906
1486	#if EV_MULTIPLICITY	1907	#if EV_MULTIPLICITY
1487	struct ev_loop *	1908	struct ev_loop *
…		…
1492	#endif	1913	#endif
1493	{	1914	{
1494	if (!ev_default_loop_ptr)	1915	if (!ev_default_loop_ptr)
1495	{	1916	{
1496	#if EV_MULTIPLICITY	1917	#if EV_MULTIPLICITY
1497	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1918	EV_P = ev_default_loop_ptr = &default_loop_struct;
1498	#else	1919	#else
1499	ev_default_loop_ptr = 1;	1920	ev_default_loop_ptr = 1;
1500	#endif	1921	#endif
1501		1922
1502	loop_init (EV_A_ flags);	1923	loop_init (EV_A_ flags);
…		…
1519		1940
1520	void	1941	void
1521	ev_default_destroy (void)	1942	ev_default_destroy (void)
1522	{	1943	{
1523	#if EV_MULTIPLICITY	1944	#if EV_MULTIPLICITY
1524	struct ev_loop *loop = ev_default_loop_ptr;	1945	EV_P = ev_default_loop_ptr;
1525	#endif	1946	#endif
		1947
		1948	ev_default_loop_ptr = 0;
1526		1949
1527	#ifndef _WIN32	1950	#ifndef _WIN32
1528	ev_ref (EV_A); /* child watcher */	1951	ev_ref (EV_A); /* child watcher */
1529	ev_signal_stop (EV_A_ &childev);	1952	ev_signal_stop (EV_A_ &childev);
1530	#endif	1953	#endif
…		…
1534		1957
1535	void	1958	void
1536	ev_default_fork (void)	1959	ev_default_fork (void)
1537	{	1960	{
1538	#if EV_MULTIPLICITY	1961	#if EV_MULTIPLICITY
1539	struct ev_loop *loop = ev_default_loop_ptr;	1962	EV_P = ev_default_loop_ptr;
1540	#endif	1963	#endif
1541		1964
1542	if (backend)
1543	postfork = 1; /* must be in line with ev_loop_fork */	1965	postfork = 1; /* must be in line with ev_loop_fork */
1544	}	1966	}
1545		1967
1546	/*****************************************************************************/	1968	/*****************************************************************************/
1547		1969
1548	void	1970	void
1549	ev_invoke (EV_P_ void *w, int revents)	1971	ev_invoke (EV_P_ void *w, int revents)
1550	{	1972	{
1551	EV_CB_INVOKE ((W)w, revents);	1973	EV_CB_INVOKE ((W)w, revents);
1552	}	1974	}
1553		1975
1554	void inline_speed	1976	unsigned int
1555	call_pending (EV_P)	1977	ev_pending_count (EV_P)
		1978	{
		1979	int pri;
		1980	unsigned int count = 0;
		1981
		1982	for (pri = NUMPRI; pri--; )
		1983	count += pendingcnt [pri];
		1984
		1985	return count;
		1986	}
		1987
		1988	void noinline
		1989	ev_invoke_pending (EV_P)
1556	{	1990	{
1557	int pri;	1991	int pri;
1558		1992
1559	for (pri = NUMPRI; pri--; )	1993	for (pri = NUMPRI; pri--; )
1560	while (pendingcnt [pri])	1994	while (pendingcnt [pri])
1561	{	1995	{
1562	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1996	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1563		1997
1564	if (expect_true (p->w))
1565	{
1566	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1998	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1999	/* ^ this is no longer true, as pending_w could be here */
1567		2000
1568	p->w->pending = 0;	2001	p->w->pending = 0;
1569	EV_CB_INVOKE (p->w, p->events);	2002	EV_CB_INVOKE (p->w, p->events);
1570	}	2003	EV_FREQUENT_CHECK;
1571	}	2004	}
1572	}	2005	}
1573		2006
1574	#if EV_IDLE_ENABLE	2007	#if EV_IDLE_ENABLE
1575	void inline_size	2008	/* make idle watchers pending. this handles the "call-idle */
		2009	/* only when higher priorities are idle" logic */
		2010	inline_size void
1576	idle_reify (EV_P)	2011	idle_reify (EV_P)
1577	{	2012	{
1578	if (expect_false (idleall))	2013	if (expect_false (idleall))
1579	{	2014	{
1580	int pri;	2015	int pri;
…		…
1592	}	2027	}
1593	}	2028	}
1594	}	2029	}
1595	#endif	2030	#endif
1596		2031
1597	void inline_size	2032	/* make timers pending */
		2033	inline_size void
1598	timers_reify (EV_P)	2034	timers_reify (EV_P)
1599	{	2035	{
		2036	EV_FREQUENT_CHECK;
		2037
1600	while (timercnt && ANHE_at (timers [HEAP0]) <= mn_now)	2038	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1601	{	2039	{
1602	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	2040	do
1603
1604	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1605
1606	/* first reschedule or stop timer */
1607	if (w->repeat)
1608	{	2041	{
		2042	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2043
		2044	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2045
		2046	/* first reschedule or stop timer */
		2047	if (w->repeat)
		2048	{
		2049	ev_at (w) += w->repeat;
		2050	if (ev_at (w) < mn_now)
		2051	ev_at (w) = mn_now;
		2052
1609	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	2053	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1610		2054
1611	ev_at (w) += w->repeat;
1612	if (ev_at (w) < mn_now)
1613	ev_at (w) = mn_now;
1614
1615	ANHE_at_set (timers [HEAP0]);	2055	ANHE_at_cache (timers [HEAP0]);
1616	downheap (timers, timercnt, HEAP0);	2056	downheap (timers, timercnt, HEAP0);
		2057	}
		2058	else
		2059	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2060
		2061	EV_FREQUENT_CHECK;
		2062	feed_reverse (EV_A_ (W)w);
1617	}	2063	}
1618	else	2064	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1619	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1620		2065
1621	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	2066	feed_reverse_done (EV_A_ EV_TIMEOUT);
1622	}	2067	}
1623	}	2068	}
1624		2069
1625	#if EV_PERIODIC_ENABLE	2070	#if EV_PERIODIC_ENABLE
1626	void inline_size	2071	/* make periodics pending */
		2072	inline_size void
1627	periodics_reify (EV_P)	2073	periodics_reify (EV_P)
1628	{	2074	{
		2075	EV_FREQUENT_CHECK;
		2076
1629	while (periodiccnt && ANHE_at (periodics [HEAP0]) <= ev_rt_now)	2077	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1630	{	2078	{
1631	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	2079	int feed_count = 0;
1632		2080
1633	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	2081	do
1634
1635	/* first reschedule or stop timer */
1636	if (w->reschedule_cb)
1637	{	2082	{
		2083	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2084
		2085	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2086
		2087	/* first reschedule or stop timer */
		2088	if (w->reschedule_cb)
		2089	{
1638	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);	2090	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2091
1639	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));	2092	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		2093
1640	ANHE_at_set (periodics [HEAP0]);	2094	ANHE_at_cache (periodics [HEAP0]);
1641	downheap (periodics, periodiccnt, HEAP0);	2095	downheap (periodics, periodiccnt, HEAP0);
		2096	}
		2097	else if (w->interval)
		2098	{
		2099	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2100	/* if next trigger time is not sufficiently in the future, put it there */
		2101	/* this might happen because of floating point inexactness */
		2102	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2103	{
		2104	ev_at (w) += w->interval;
		2105
		2106	/* if interval is unreasonably low we might still have a time in the past */
		2107	/* so correct this. this will make the periodic very inexact, but the user */
		2108	/* has effectively asked to get triggered more often than possible */
		2109	if (ev_at (w) < ev_rt_now)
		2110	ev_at (w) = ev_rt_now;
		2111	}
		2112
		2113	ANHE_at_cache (periodics [HEAP0]);
		2114	downheap (periodics, periodiccnt, HEAP0);
		2115	}
		2116	else
		2117	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2118
		2119	EV_FREQUENT_CHECK;
		2120	feed_reverse (EV_A_ (W)w);
1642	}	2121	}
1643	else if (w->interval)	2122	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1644	{
1645	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1646	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1647	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1648	ANHE_at_set (periodics [HEAP0]);
1649	downheap (periodics, periodiccnt, HEAP0);
1650	}
1651	else
1652	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1653		2123
1654	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	2124	feed_reverse_done (EV_A_ EV_PERIODIC);
1655	}	2125	}
1656	}	2126	}
1657		2127
		2128	/* simply recalculate all periodics */
		2129	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1658	static void noinline	2130	static void noinline
1659	periodics_reschedule (EV_P)	2131	periodics_reschedule (EV_P)
1660	{	2132	{
1661	int i;	2133	int i;
1662		2134
…		…
1668	if (w->reschedule_cb)	2140	if (w->reschedule_cb)
1669	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2141	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1670	else if (w->interval)	2142	else if (w->interval)
1671	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2143	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1672		2144
1673	ANHE_at_set (periodics [i]);	2145	ANHE_at_cache (periodics [i]);
		2146	}
		2147
		2148	reheap (periodics, periodiccnt);
		2149	}
		2150	#endif
		2151
		2152	/* adjust all timers by a given offset */
		2153	static void noinline
		2154	timers_reschedule (EV_P_ ev_tstamp adjust)
		2155	{
		2156	int i;
		2157
		2158	for (i = 0; i < timercnt; ++i)
1674	}	2159	{
1675		2160	ANHE *he = timers + i + HEAP0;
1676	/* now rebuild the heap, this for the 2-heap, inefficient for the 4-heap, but correct */	2161	ANHE_w (*he)->at += adjust;
1677	for (i = periodiccnt >> 1; --i; )	2162	ANHE_at_cache (*he);
1678	downheap (periodics, periodiccnt, i + HEAP0);	2163	}
1679	}	2164	}
1680	#endif
1681		2165
1682	void inline_speed	2166	/* fetch new monotonic and realtime times from the kernel */
		2167	/* also detetc if there was a timejump, and act accordingly */
		2168	inline_speed void
1683	time_update (EV_P_ ev_tstamp max_block)	2169	time_update (EV_P_ ev_tstamp max_block)
1684	{	2170	{
1685	int i;
1686
1687	#if EV_USE_MONOTONIC	2171	#if EV_USE_MONOTONIC
1688	if (expect_true (have_monotonic))	2172	if (expect_true (have_monotonic))
1689	{	2173	{
		2174	int i;
1690	ev_tstamp odiff = rtmn_diff;	2175	ev_tstamp odiff = rtmn_diff;
1691		2176
1692	mn_now = get_clock ();	2177	mn_now = get_clock ();
1693		2178
1694	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2179	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1720	ev_rt_now = ev_time ();	2205	ev_rt_now = ev_time ();
1721	mn_now = get_clock ();	2206	mn_now = get_clock ();
1722	now_floor = mn_now;	2207	now_floor = mn_now;
1723	}	2208	}
1724		2209
		2210	/* no timer adjustment, as the monotonic clock doesn't jump */
		2211	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1725	# if EV_PERIODIC_ENABLE	2212	# if EV_PERIODIC_ENABLE
1726	periodics_reschedule (EV_A);	2213	periodics_reschedule (EV_A);
1727	# endif	2214	# endif
1728	/* no timer adjustment, as the monotonic clock doesn't jump */
1729	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1730	}	2215	}
1731	else	2216	else
1732	#endif	2217	#endif
1733	{	2218	{
1734	ev_rt_now = ev_time ();	2219	ev_rt_now = ev_time ();
1735		2220
1736	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2221	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1737	{	2222	{
		2223	/* adjust timers. this is easy, as the offset is the same for all of them */
		2224	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1738	#if EV_PERIODIC_ENABLE	2225	#if EV_PERIODIC_ENABLE
1739	periodics_reschedule (EV_A);	2226	periodics_reschedule (EV_A);
1740	#endif	2227	#endif
1741	/* adjust timers. this is easy, as the offset is the same for all of them */
1742	for (i = 0; i < timercnt; ++i)
1743	{
1744	ANHE *he = timers + i + HEAP0;
1745	ANHE_w (*he)->at += ev_rt_now - mn_now;
1746	ANHE_at_set (*he);
1747	}
1748	}	2228	}
1749		2229
1750	mn_now = ev_rt_now;	2230	mn_now = ev_rt_now;
1751	}	2231	}
1752	}	2232	}
1753		2233
1754	void	2234	void
1755	ev_ref (EV_P)
1756	{
1757	++activecnt;
1758	}
1759
1760	void
1761	ev_unref (EV_P)
1762	{
1763	--activecnt;
1764	}
1765
1766	static int loop_done;
1767
1768	void
1769	ev_loop (EV_P_ int flags)	2235	ev_loop (EV_P_ int flags)
1770	{	2236	{
		2237	#if EV_MINIMAL < 2
		2238	++loop_depth;
		2239	#endif
		2240
		2241	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2242
1771	loop_done = EVUNLOOP_CANCEL;	2243	loop_done = EVUNLOOP_CANCEL;
1772		2244
1773	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2245	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1774		2246
1775	do	2247	do
1776	{	2248	{
		2249	#if EV_VERIFY >= 2
		2250	ev_loop_verify (EV_A);
		2251	#endif
		2252
1777	#ifndef _WIN32	2253	#ifndef _WIN32
1778	if (expect_false (curpid)) /* penalise the forking check even more */	2254	if (expect_false (curpid)) /* penalise the forking check even more */
1779	if (expect_false (getpid () != curpid))	2255	if (expect_false (getpid () != curpid))
1780	{	2256	{
1781	curpid = getpid ();	2257	curpid = getpid ();
…		…
1787	/* we might have forked, so queue fork handlers */	2263	/* we might have forked, so queue fork handlers */
1788	if (expect_false (postfork))	2264	if (expect_false (postfork))
1789	if (forkcnt)	2265	if (forkcnt)
1790	{	2266	{
1791	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2267	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1792	call_pending (EV_A);	2268	EV_INVOKE_PENDING;
1793	}	2269	}
1794	#endif	2270	#endif
1795		2271
1796	/* queue prepare watchers (and execute them) */	2272	/* queue prepare watchers (and execute them) */
1797	if (expect_false (preparecnt))	2273	if (expect_false (preparecnt))
1798	{	2274	{
1799	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2275	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1800	call_pending (EV_A);	2276	EV_INVOKE_PENDING;
1801	}	2277	}
1802		2278
1803	if (expect_false (!activecnt))	2279	if (expect_false (loop_done))
1804	break;	2280	break;
1805		2281
1806	/* we might have forked, so reify kernel state if necessary */	2282	/* we might have forked, so reify kernel state if necessary */
1807	if (expect_false (postfork))	2283	if (expect_false (postfork))
1808	loop_fork (EV_A);	2284	loop_fork (EV_A);
…		…
1815	ev_tstamp waittime = 0.;	2291	ev_tstamp waittime = 0.;
1816	ev_tstamp sleeptime = 0.;	2292	ev_tstamp sleeptime = 0.;
1817		2293
1818	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2294	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1819	{	2295	{
		2296	/* remember old timestamp for io_blocktime calculation */
		2297	ev_tstamp prev_mn_now = mn_now;
		2298
1820	/* update time to cancel out callback processing overhead */	2299	/* update time to cancel out callback processing overhead */
1821	time_update (EV_A_ 1e100);	2300	time_update (EV_A_ 1e100);
1822		2301
1823	waittime = MAX_BLOCKTIME;	2302	waittime = MAX_BLOCKTIME;
1824		2303
…		…
1834	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2313	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1835	if (waittime > to) waittime = to;	2314	if (waittime > to) waittime = to;
1836	}	2315	}
1837	#endif	2316	#endif
1838		2317
		2318	/* don't let timeouts decrease the waittime below timeout_blocktime */
1839	if (expect_false (waittime < timeout_blocktime))	2319	if (expect_false (waittime < timeout_blocktime))
1840	waittime = timeout_blocktime;	2320	waittime = timeout_blocktime;
1841		2321
1842	sleeptime = waittime - backend_fudge;	2322	/* extra check because io_blocktime is commonly 0 */
1843
1844	if (expect_true (sleeptime > io_blocktime))	2323	if (expect_false (io_blocktime))
1845	sleeptime = io_blocktime;
1846
1847	if (sleeptime)
1848	{	2324	{
		2325	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2326
		2327	if (sleeptime > waittime - backend_fudge)
		2328	sleeptime = waittime - backend_fudge;
		2329
		2330	if (expect_true (sleeptime > 0.))
		2331	{
1849	ev_sleep (sleeptime);	2332	ev_sleep (sleeptime);
1850	waittime -= sleeptime;	2333	waittime -= sleeptime;
		2334	}
1851	}	2335	}
1852	}	2336	}
1853		2337
		2338	#if EV_MINIMAL < 2
1854	++loop_count;	2339	++loop_count;
		2340	#endif
		2341	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1855	backend_poll (EV_A_ waittime);	2342	backend_poll (EV_A_ waittime);
		2343	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1856		2344
1857	/* update ev_rt_now, do magic */	2345	/* update ev_rt_now, do magic */
1858	time_update (EV_A_ waittime + sleeptime);	2346	time_update (EV_A_ waittime + sleeptime);
1859	}	2347	}
1860		2348
…		…
1871		2359
1872	/* queue check watchers, to be executed first */	2360	/* queue check watchers, to be executed first */
1873	if (expect_false (checkcnt))	2361	if (expect_false (checkcnt))
1874	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2362	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1875		2363
1876	call_pending (EV_A);	2364	EV_INVOKE_PENDING;
1877	}	2365	}
1878	while (expect_true (	2366	while (expect_true (
1879	activecnt	2367	activecnt
1880	&& !loop_done	2368	&& !loop_done
1881	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2369	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1882	));	2370	));
1883		2371
1884	if (loop_done == EVUNLOOP_ONE)	2372	if (loop_done == EVUNLOOP_ONE)
1885	loop_done = EVUNLOOP_CANCEL;	2373	loop_done = EVUNLOOP_CANCEL;
		2374
		2375	#if EV_MINIMAL < 2
		2376	--loop_depth;
		2377	#endif
1886	}	2378	}
1887		2379
1888	void	2380	void
1889	ev_unloop (EV_P_ int how)	2381	ev_unloop (EV_P_ int how)
1890	{	2382	{
1891	loop_done = how;	2383	loop_done = how;
1892	}	2384	}
1893		2385
		2386	void
		2387	ev_ref (EV_P)
		2388	{
		2389	++activecnt;
		2390	}
		2391
		2392	void
		2393	ev_unref (EV_P)
		2394	{
		2395	--activecnt;
		2396	}
		2397
		2398	void
		2399	ev_now_update (EV_P)
		2400	{
		2401	time_update (EV_A_ 1e100);
		2402	}
		2403
		2404	void
		2405	ev_suspend (EV_P)
		2406	{
		2407	ev_now_update (EV_A);
		2408	}
		2409
		2410	void
		2411	ev_resume (EV_P)
		2412	{
		2413	ev_tstamp mn_prev = mn_now;
		2414
		2415	ev_now_update (EV_A);
		2416	timers_reschedule (EV_A_ mn_now - mn_prev);
		2417	#if EV_PERIODIC_ENABLE
		2418	/* TODO: really do this? */
		2419	periodics_reschedule (EV_A);
		2420	#endif
		2421	}
		2422
1894	/*****************************************************************************/	2423	/*****************************************************************************/
		2424	/* singly-linked list management, used when the expected list length is short */
1895		2425
1896	void inline_size	2426	inline_size void
1897	wlist_add (WL *head, WL elem)	2427	wlist_add (WL *head, WL elem)
1898	{	2428	{
1899	elem->next = *head;	2429	elem->next = *head;
1900	*head = elem;	2430	*head = elem;
1901	}	2431	}
1902		2432
1903	void inline_size	2433	inline_size void
1904	wlist_del (WL *head, WL elem)	2434	wlist_del (WL *head, WL elem)
1905	{	2435	{
1906	while (*head)	2436	while (*head)
1907	{	2437	{
1908	if (*head == elem)	2438	if (expect_true (*head == elem))
1909	{	2439	{
1910	*head = elem->next;	2440	*head = elem->next;
1911	return;	2441	break;
1912	}	2442	}
1913		2443
1914	head = &(*head)->next;	2444	head = &(*head)->next;
1915	}	2445	}
1916	}	2446	}
1917		2447
1918	void inline_speed	2448	/* internal, faster, version of ev_clear_pending */
		2449	inline_speed void
1919	clear_pending (EV_P_ W w)	2450	clear_pending (EV_P_ W w)
1920	{	2451	{
1921	if (w->pending)	2452	if (w->pending)
1922	{	2453	{
1923	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2454	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1924	w->pending = 0;	2455	w->pending = 0;
1925	}	2456	}
1926	}	2457	}
1927		2458
1928	int	2459	int
…		…
1932	int pending = w_->pending;	2463	int pending = w_->pending;
1933		2464
1934	if (expect_true (pending))	2465	if (expect_true (pending))
1935	{	2466	{
1936	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2467	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2468	p->w = (W)&pending_w;
1937	w_->pending = 0;	2469	w_->pending = 0;
1938	p->w = 0;
1939	return p->events;	2470	return p->events;
1940	}	2471	}
1941	else	2472	else
1942	return 0;	2473	return 0;
1943	}	2474	}
1944		2475
1945	void inline_size	2476	inline_size void
1946	pri_adjust (EV_P_ W w)	2477	pri_adjust (EV_P_ W w)
1947	{	2478	{
1948	int pri = w->priority;	2479	int pri = ev_priority (w);
1949	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2480	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1950	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2481	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1951	w->priority = pri;	2482	ev_set_priority (w, pri);
1952	}	2483	}
1953		2484
1954	void inline_speed	2485	inline_speed void
1955	ev_start (EV_P_ W w, int active)	2486	ev_start (EV_P_ W w, int active)
1956	{	2487	{
1957	pri_adjust (EV_A_ w);	2488	pri_adjust (EV_A_ w);
1958	w->active = active;	2489	w->active = active;
1959	ev_ref (EV_A);	2490	ev_ref (EV_A);
1960	}	2491	}
1961		2492
1962	void inline_size	2493	inline_size void
1963	ev_stop (EV_P_ W w)	2494	ev_stop (EV_P_ W w)
1964	{	2495	{
1965	ev_unref (EV_A);	2496	ev_unref (EV_A);
1966	w->active = 0;	2497	w->active = 0;
1967	}	2498	}
…		…
1974	int fd = w->fd;	2505	int fd = w->fd;
1975		2506
1976	if (expect_false (ev_is_active (w)))	2507	if (expect_false (ev_is_active (w)))
1977	return;	2508	return;
1978		2509
1979	assert (("ev_io_start called with negative fd", fd >= 0));	2510	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2511	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2512
		2513	EV_FREQUENT_CHECK;
1980		2514
1981	ev_start (EV_A_ (W)w, 1);	2515	ev_start (EV_A_ (W)w, 1);
1982	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2516	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1983	wlist_add (&anfds[fd].head, (WL)w);	2517	wlist_add (&anfds[fd].head, (WL)w);
1984		2518
1985	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2519	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1986	w->events &= ~EV_IOFDSET;	2520	w->events &= ~EV__IOFDSET;
		2521
		2522	EV_FREQUENT_CHECK;
1987	}	2523	}
1988		2524
1989	void noinline	2525	void noinline
1990	ev_io_stop (EV_P_ ev_io *w)	2526	ev_io_stop (EV_P_ ev_io *w)
1991	{	2527	{
1992	clear_pending (EV_A_ (W)w);	2528	clear_pending (EV_A_ (W)w);
1993	if (expect_false (!ev_is_active (w)))	2529	if (expect_false (!ev_is_active (w)))
1994	return;	2530	return;
1995		2531
1996	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2532	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2533
		2534	EV_FREQUENT_CHECK;
1997		2535
1998	wlist_del (&anfds[w->fd].head, (WL)w);	2536	wlist_del (&anfds[w->fd].head, (WL)w);
1999	ev_stop (EV_A_ (W)w);	2537	ev_stop (EV_A_ (W)w);
2000		2538
2001	fd_change (EV_A_ w->fd, 1);	2539	fd_change (EV_A_ w->fd, 1);
		2540
		2541	EV_FREQUENT_CHECK;
2002	}	2542	}
2003		2543
2004	void noinline	2544	void noinline
2005	ev_timer_start (EV_P_ ev_timer *w)	2545	ev_timer_start (EV_P_ ev_timer *w)
2006	{	2546	{
2007	if (expect_false (ev_is_active (w)))	2547	if (expect_false (ev_is_active (w)))
2008	return;	2548	return;
2009		2549
2010	ev_at (w) += mn_now;	2550	ev_at (w) += mn_now;
2011		2551
2012	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2552	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2013		2553
		2554	EV_FREQUENT_CHECK;
		2555
		2556	++timercnt;
2014	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);	2557	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2015	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);	2558	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2016	ANHE_w (timers [ev_active (w)]) = (WT)w;	2559	ANHE_w (timers [ev_active (w)]) = (WT)w;
2017	ANHE_at_set (timers [ev_active (w)]);	2560	ANHE_at_cache (timers [ev_active (w)]);
2018	upheap (timers, ev_active (w));	2561	upheap (timers, ev_active (w));
2019		2562
		2563	EV_FREQUENT_CHECK;
		2564
2020	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2565	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2021	}	2566	}
2022		2567
2023	void noinline	2568	void noinline
2024	ev_timer_stop (EV_P_ ev_timer *w)	2569	ev_timer_stop (EV_P_ ev_timer *w)
2025	{	2570	{
2026	clear_pending (EV_A_ (W)w);	2571	clear_pending (EV_A_ (W)w);
2027	if (expect_false (!ev_is_active (w)))	2572	if (expect_false (!ev_is_active (w)))
2028	return;	2573	return;
2029		2574
		2575	EV_FREQUENT_CHECK;
		2576
2030	{	2577	{
2031	int active = ev_active (w);	2578	int active = ev_active (w);
2032		2579
2033	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2580	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2034		2581
		2582	--timercnt;
		2583
2035	if (expect_true (active < timercnt + HEAP0 - 1))	2584	if (expect_true (active < timercnt + HEAP0))
2036	{	2585	{
2037	timers [active] = timers [timercnt + HEAP0 - 1];	2586	timers [active] = timers [timercnt + HEAP0];
2038	adjustheap (timers, timercnt, active);	2587	adjustheap (timers, timercnt, active);
2039	}	2588	}
2040
2041	--timercnt;
2042	}	2589	}
		2590
		2591	EV_FREQUENT_CHECK;
2043		2592
2044	ev_at (w) -= mn_now;	2593	ev_at (w) -= mn_now;
2045		2594
2046	ev_stop (EV_A_ (W)w);	2595	ev_stop (EV_A_ (W)w);
2047	}	2596	}
2048		2597
2049	void noinline	2598	void noinline
2050	ev_timer_again (EV_P_ ev_timer *w)	2599	ev_timer_again (EV_P_ ev_timer *w)
2051	{	2600	{
		2601	EV_FREQUENT_CHECK;
		2602
2052	if (ev_is_active (w))	2603	if (ev_is_active (w))
2053	{	2604	{
2054	if (w->repeat)	2605	if (w->repeat)
2055	{	2606	{
2056	ev_at (w) = mn_now + w->repeat;	2607	ev_at (w) = mn_now + w->repeat;
2057	ANHE_at_set (timers [ev_active (w)]);	2608	ANHE_at_cache (timers [ev_active (w)]);
2058	adjustheap (timers, timercnt, ev_active (w));	2609	adjustheap (timers, timercnt, ev_active (w));
2059	}	2610	}
2060	else	2611	else
2061	ev_timer_stop (EV_A_ w);	2612	ev_timer_stop (EV_A_ w);
2062	}	2613	}
2063	else if (w->repeat)	2614	else if (w->repeat)
2064	{	2615	{
2065	ev_at (w) = w->repeat;	2616	ev_at (w) = w->repeat;
2066	ev_timer_start (EV_A_ w);	2617	ev_timer_start (EV_A_ w);
2067	}	2618	}
		2619
		2620	EV_FREQUENT_CHECK;
		2621	}
		2622
		2623	ev_tstamp
		2624	ev_timer_remaining (EV_P_ ev_timer *w)
		2625	{
		2626	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2068	}	2627	}
2069		2628
2070	#if EV_PERIODIC_ENABLE	2629	#if EV_PERIODIC_ENABLE
2071	void noinline	2630	void noinline
2072	ev_periodic_start (EV_P_ ev_periodic *w)	2631	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
2076		2635
2077	if (w->reschedule_cb)	2636	if (w->reschedule_cb)
2078	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2637	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2079	else if (w->interval)	2638	else if (w->interval)
2080	{	2639	{
2081	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2640	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2082	/* this formula differs from the one in periodic_reify because we do not always round up */	2641	/* this formula differs from the one in periodic_reify because we do not always round up */
2083	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2642	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2084	}	2643	}
2085	else	2644	else
2086	ev_at (w) = w->offset;	2645	ev_at (w) = w->offset;
2087		2646
		2647	EV_FREQUENT_CHECK;
		2648
		2649	++periodiccnt;
2088	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);	2650	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2089	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);	2651	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2090	ANHE_w (periodics [ev_active (w)]) = (WT)w;	2652	ANHE_w (periodics [ev_active (w)]) = (WT)w;
		2653	ANHE_at_cache (periodics [ev_active (w)]);
2091	upheap (periodics, ev_active (w));	2654	upheap (periodics, ev_active (w));
2092		2655
		2656	EV_FREQUENT_CHECK;
		2657
2093	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2658	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2094	}	2659	}
2095		2660
2096	void noinline	2661	void noinline
2097	ev_periodic_stop (EV_P_ ev_periodic *w)	2662	ev_periodic_stop (EV_P_ ev_periodic *w)
2098	{	2663	{
2099	clear_pending (EV_A_ (W)w);	2664	clear_pending (EV_A_ (W)w);
2100	if (expect_false (!ev_is_active (w)))	2665	if (expect_false (!ev_is_active (w)))
2101	return;	2666	return;
2102		2667
		2668	EV_FREQUENT_CHECK;
		2669
2103	{	2670	{
2104	int active = ev_active (w);	2671	int active = ev_active (w);
2105		2672
2106	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2673	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2107		2674
		2675	--periodiccnt;
		2676
2108	if (expect_true (active < periodiccnt + HEAP0 - 1))	2677	if (expect_true (active < periodiccnt + HEAP0))
2109	{	2678	{
2110	periodics [active] = periodics [periodiccnt + HEAP0 - 1];	2679	periodics [active] = periodics [periodiccnt + HEAP0];
2111	adjustheap (periodics, periodiccnt, active);	2680	adjustheap (periodics, periodiccnt, active);
2112	}	2681	}
2113
2114	--periodiccnt;
2115	}	2682	}
		2683
		2684	EV_FREQUENT_CHECK;
2116		2685
2117	ev_stop (EV_A_ (W)w);	2686	ev_stop (EV_A_ (W)w);
2118	}	2687	}
2119		2688
2120	void noinline	2689	void noinline
…		…
2131	#endif	2700	#endif
2132		2701
2133	void noinline	2702	void noinline
2134	ev_signal_start (EV_P_ ev_signal *w)	2703	ev_signal_start (EV_P_ ev_signal *w)
2135	{	2704	{
2136	#if EV_MULTIPLICITY
2137	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2138	#endif
2139	if (expect_false (ev_is_active (w)))	2705	if (expect_false (ev_is_active (w)))
2140	return;	2706	return;
2141		2707
2142	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2708	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2143		2709
2144	evpipe_init (EV_A);	2710	#if EV_MULTIPLICITY
		2711	assert (("libev: a signal must not be attached to two different loops",
		2712	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2145		2713
		2714	signals [w->signum - 1].loop = EV_A;
		2715	#endif
		2716
		2717	EV_FREQUENT_CHECK;
		2718
		2719	#if EV_USE_SIGNALFD
		2720	if (sigfd == -2)
2146	{	2721	{
2147	#ifndef _WIN32	2722	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2148	sigset_t full, prev;	2723	if (sigfd < 0 && errno == EINVAL)
2149	sigfillset (&full);	2724	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2150	sigprocmask (SIG_SETMASK, &full, &prev);
2151	#endif
2152		2725
2153	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2726	if (sigfd >= 0)
		2727	{
		2728	fd_intern (sigfd); /* doing it twice will not hurt */
2154		2729
2155	#ifndef _WIN32	2730	sigemptyset (&sigfd_set);
2156	sigprocmask (SIG_SETMASK, &prev, 0);	2731
2157	#endif	2732	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2733	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2734	ev_io_start (EV_A_ &sigfd_w);
		2735	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2736	}
2158	}	2737	}
		2738
		2739	if (sigfd >= 0)
		2740	{
		2741	/* TODO: check .head */
		2742	sigaddset (&sigfd_set, w->signum);
		2743	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2744
		2745	signalfd (sigfd, &sigfd_set, 0);
		2746	}
		2747	#endif
2159		2748
2160	ev_start (EV_A_ (W)w, 1);	2749	ev_start (EV_A_ (W)w, 1);
2161	wlist_add (&signals [w->signum - 1].head, (WL)w);	2750	wlist_add (&signals [w->signum - 1].head, (WL)w);
2162		2751
2163	if (!((WL)w)->next)	2752	if (!((WL)w)->next)
		2753	# if EV_USE_SIGNALFD
		2754	if (sigfd < 0) /*TODO*/
		2755	# endif
2164	{	2756	{
2165	#if _WIN32	2757	# if _WIN32
2166	signal (w->signum, ev_sighandler);	2758	signal (w->signum, ev_sighandler);
2167	#else	2759	# else
2168	struct sigaction sa;	2760	struct sigaction sa;
		2761
		2762	evpipe_init (EV_A);
		2763
2169	sa.sa_handler = ev_sighandler;	2764	sa.sa_handler = ev_sighandler;
2170	sigfillset (&sa.sa_mask);	2765	sigfillset (&sa.sa_mask);
2171	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2766	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2172	sigaction (w->signum, &sa, 0);	2767	sigaction (w->signum, &sa, 0);
		2768
		2769	sigemptyset (&sa.sa_mask);
		2770	sigaddset (&sa.sa_mask, w->signum);
		2771	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2173	#endif	2772	#endif
2174	}	2773	}
		2774
		2775	EV_FREQUENT_CHECK;
2175	}	2776	}
2176		2777
2177	void noinline	2778	void noinline
2178	ev_signal_stop (EV_P_ ev_signal *w)	2779	ev_signal_stop (EV_P_ ev_signal *w)
2179	{	2780	{
2180	clear_pending (EV_A_ (W)w);	2781	clear_pending (EV_A_ (W)w);
2181	if (expect_false (!ev_is_active (w)))	2782	if (expect_false (!ev_is_active (w)))
2182	return;	2783	return;
2183		2784
		2785	EV_FREQUENT_CHECK;
		2786
2184	wlist_del (&signals [w->signum - 1].head, (WL)w);	2787	wlist_del (&signals [w->signum - 1].head, (WL)w);
2185	ev_stop (EV_A_ (W)w);	2788	ev_stop (EV_A_ (W)w);
2186		2789
2187	if (!signals [w->signum - 1].head)	2790	if (!signals [w->signum - 1].head)
		2791	{
		2792	#if EV_MULTIPLICITY
		2793	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2794	#endif
		2795	#if EV_USE_SIGNALFD
		2796	if (sigfd >= 0)
		2797	{
		2798	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2799	sigdelset (&sigfd_set, w->signum);
		2800	signalfd (sigfd, &sigfd_set, 0);
		2801	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2802	/*TODO: maybe unblock signal? */
		2803	}
		2804	else
		2805	#endif
2188	signal (w->signum, SIG_DFL);	2806	signal (w->signum, SIG_DFL);
		2807	}
		2808
		2809	EV_FREQUENT_CHECK;
2189	}	2810	}
2190		2811
2191	void	2812	void
2192	ev_child_start (EV_P_ ev_child *w)	2813	ev_child_start (EV_P_ ev_child *w)
2193	{	2814	{
2194	#if EV_MULTIPLICITY	2815	#if EV_MULTIPLICITY
2195	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2816	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2196	#endif	2817	#endif
2197	if (expect_false (ev_is_active (w)))	2818	if (expect_false (ev_is_active (w)))
2198	return;	2819	return;
2199		2820
		2821	EV_FREQUENT_CHECK;
		2822
2200	ev_start (EV_A_ (W)w, 1);	2823	ev_start (EV_A_ (W)w, 1);
2201	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2824	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2825
		2826	EV_FREQUENT_CHECK;
2202	}	2827	}
2203		2828
2204	void	2829	void
2205	ev_child_stop (EV_P_ ev_child *w)	2830	ev_child_stop (EV_P_ ev_child *w)
2206	{	2831	{
2207	clear_pending (EV_A_ (W)w);	2832	clear_pending (EV_A_ (W)w);
2208	if (expect_false (!ev_is_active (w)))	2833	if (expect_false (!ev_is_active (w)))
2209	return;	2834	return;
2210		2835
		2836	EV_FREQUENT_CHECK;
		2837
2211	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2838	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2212	ev_stop (EV_A_ (W)w);	2839	ev_stop (EV_A_ (W)w);
		2840
		2841	EV_FREQUENT_CHECK;
2213	}	2842	}
2214		2843
2215	#if EV_STAT_ENABLE	2844	#if EV_STAT_ENABLE
2216		2845
2217	# ifdef _WIN32	2846	# ifdef _WIN32
2218	# undef lstat	2847	# undef lstat
2219	# define lstat(a,b) _stati64 (a,b)	2848	# define lstat(a,b) _stati64 (a,b)
2220	# endif	2849	# endif
2221		2850
2222	#define DEF_STAT_INTERVAL 5.0074891	2851	#define DEF_STAT_INTERVAL 5.0074891
		2852	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2223	#define MIN_STAT_INTERVAL 0.1074891	2853	#define MIN_STAT_INTERVAL 0.1074891
2224		2854
2225	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2855	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2226		2856
2227	#if EV_USE_INOTIFY	2857	#if EV_USE_INOTIFY
2228	# define EV_INOTIFY_BUFSIZE 8192	2858	# define EV_INOTIFY_BUFSIZE 8192
…		…
2232	{	2862	{
2233	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);	2863	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2234		2864
2235	if (w->wd < 0)	2865	if (w->wd < 0)
2236	{	2866	{
		2867	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2237	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2868	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2238		2869
2239	/* monitor some parent directory for speedup hints */	2870	/* monitor some parent directory for speedup hints */
2240	/* note that exceeding the hardcoded limit is not a correctness issue, */	2871	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2241	/* but an efficiency issue only */	2872	/* but an efficiency issue only */
2242	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2873	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2243	{	2874	{
2244	char path [4096];	2875	char path [4096];
2245	strcpy (path, w->path);	2876	strcpy (path, w->path);
…		…
2249	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2880	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2250	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2881	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2251		2882
2252	char *pend = strrchr (path, '/');	2883	char *pend = strrchr (path, '/');
2253		2884
2254	if (!pend)	2885	if (!pend || pend == path)
2255	break; /* whoops, no '/', complain to your admin */	2886	break;
2256		2887
2257	*pend = 0;	2888	*pend = 0;
2258	w->wd = inotify_add_watch (fs_fd, path, mask);	2889	w->wd = inotify_add_watch (fs_fd, path, mask);
2259	}	2890	}
2260	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2891	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2261	}	2892	}
2262	}	2893	}
2263	else
2264	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2265		2894
2266	if (w->wd >= 0)	2895	if (w->wd >= 0)
		2896	{
		2897	struct statfs sfs;
		2898
2267	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2899	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2900
		2901	/* now local changes will be tracked by inotify, but remote changes won't */
		2902	/* unless the filesystem it known to be local, we therefore still poll */
		2903	/* also do poll on <2.6.25, but with normal frequency */
		2904
		2905	if (fs_2625 && !statfs (w->path, &sfs))
		2906	if (sfs.f_type == 0x1373 /* devfs */
		2907	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2908	|| sfs.f_type == 0x3153464a /* jfs */
		2909	|| sfs.f_type == 0x52654973 /* reiser3 */
		2910	|| sfs.f_type == 0x01021994 /* tempfs */
		2911	|| sfs.f_type == 0x58465342 /* xfs */)
		2912	return;
		2913
		2914	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2915	ev_timer_again (EV_A_ &w->timer);
		2916	}
2268	}	2917	}
2269		2918
2270	static void noinline	2919	static void noinline
2271	infy_del (EV_P_ ev_stat *w)	2920	infy_del (EV_P_ ev_stat *w)
2272	{	2921	{
…		…
2286		2935
2287	static void noinline	2936	static void noinline
2288	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2937	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2289	{	2938	{
2290	if (slot < 0)	2939	if (slot < 0)
2291	/* overflow, need to check for all hahs slots */	2940	/* overflow, need to check for all hash slots */
2292	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2941	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2293	infy_wd (EV_A_ slot, wd, ev);	2942	infy_wd (EV_A_ slot, wd, ev);
2294	else	2943	else
2295	{	2944	{
2296	WL w_;	2945	WL w_;
…		…
2302		2951
2303	if (w->wd == wd || wd == -1)	2952	if (w->wd == wd || wd == -1)
2304	{	2953	{
2305	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2954	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2306	{	2955	{
		2956	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2307	w->wd = -1;	2957	w->wd = -1;
2308	infy_add (EV_A_ w); /* re-add, no matter what */	2958	infy_add (EV_A_ w); /* re-add, no matter what */
2309	}	2959	}
2310		2960
2311	stat_timer_cb (EV_A_ &w->timer, 0);	2961	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2324		2974
2325	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2975	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2326	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2976	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2327	}	2977	}
2328		2978
2329	void inline_size	2979	inline_size void
		2980	check_2625 (EV_P)
		2981	{
		2982	/* kernels < 2.6.25 are borked
		2983	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2984	*/
		2985	struct utsname buf;
		2986	int major, minor, micro;
		2987
		2988	if (uname (&buf))
		2989	return;
		2990
		2991	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2992	return;
		2993
		2994	if (major < 2
		2995	|| (major == 2 && minor < 6)
		2996	|| (major == 2 && minor == 6 && micro < 25))
		2997	return;
		2998
		2999	fs_2625 = 1;
		3000	}
		3001
		3002	inline_size int
		3003	infy_newfd (void)
		3004	{
		3005	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3006	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3007	if (fd >= 0)
		3008	return fd;
		3009	#endif
		3010	return inotify_init ();
		3011	}
		3012
		3013	inline_size void
2330	infy_init (EV_P)	3014	infy_init (EV_P)
2331	{	3015	{
2332	if (fs_fd != -2)	3016	if (fs_fd != -2)
2333	return;	3017	return;
2334		3018
		3019	fs_fd = -1;
		3020
		3021	check_2625 (EV_A);
		3022
2335	fs_fd = inotify_init ();	3023	fs_fd = infy_newfd ();
2336		3024
2337	if (fs_fd >= 0)	3025	if (fs_fd >= 0)
2338	{	3026	{
		3027	fd_intern (fs_fd);
2339	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3028	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2340	ev_set_priority (&fs_w, EV_MAXPRI);	3029	ev_set_priority (&fs_w, EV_MAXPRI);
2341	ev_io_start (EV_A_ &fs_w);	3030	ev_io_start (EV_A_ &fs_w);
2342	}	3031	}
2343	}	3032	}
2344		3033
2345	void inline_size	3034	inline_size void
2346	infy_fork (EV_P)	3035	infy_fork (EV_P)
2347	{	3036	{
2348	int slot;	3037	int slot;
2349		3038
2350	if (fs_fd < 0)	3039	if (fs_fd < 0)
2351	return;	3040	return;
2352		3041
		3042	ev_io_stop (EV_A_ &fs_w);
2353	close (fs_fd);	3043	close (fs_fd);
2354	fs_fd = inotify_init ();	3044	fs_fd = infy_newfd ();
		3045
		3046	if (fs_fd >= 0)
		3047	{
		3048	fd_intern (fs_fd);
		3049	ev_io_set (&fs_w, fs_fd, EV_READ);
		3050	ev_io_start (EV_A_ &fs_w);
		3051	}
2355		3052
2356	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3053	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2357	{	3054	{
2358	WL w_ = fs_hash [slot].head;	3055	WL w_ = fs_hash [slot].head;
2359	fs_hash [slot].head = 0;	3056	fs_hash [slot].head = 0;
…		…
2366	w->wd = -1;	3063	w->wd = -1;
2367		3064
2368	if (fs_fd >= 0)	3065	if (fs_fd >= 0)
2369	infy_add (EV_A_ w); /* re-add, no matter what */	3066	infy_add (EV_A_ w); /* re-add, no matter what */
2370	else	3067	else
2371	ev_timer_start (EV_A_ &w->timer);	3068	ev_timer_again (EV_A_ &w->timer);
2372	}	3069	}
2373
2374	}	3070	}
2375	}	3071	}
2376		3072
		3073	#endif
		3074
		3075	#ifdef _WIN32
		3076	# define EV_LSTAT(p,b) _stati64 (p, b)
		3077	#else
		3078	# define EV_LSTAT(p,b) lstat (p, b)
2377	#endif	3079	#endif
2378		3080
2379	void	3081	void
2380	ev_stat_stat (EV_P_ ev_stat *w)	3082	ev_stat_stat (EV_P_ ev_stat *w)
2381	{	3083	{
…		…
2408	|| w->prev.st_atime != w->attr.st_atime	3110	|| w->prev.st_atime != w->attr.st_atime
2409	|| w->prev.st_mtime != w->attr.st_mtime	3111	|| w->prev.st_mtime != w->attr.st_mtime
2410	|| w->prev.st_ctime != w->attr.st_ctime	3112	|| w->prev.st_ctime != w->attr.st_ctime
2411	) {	3113	) {
2412	#if EV_USE_INOTIFY	3114	#if EV_USE_INOTIFY
		3115	if (fs_fd >= 0)
		3116	{
2413	infy_del (EV_A_ w);	3117	infy_del (EV_A_ w);
2414	infy_add (EV_A_ w);	3118	infy_add (EV_A_ w);
2415	ev_stat_stat (EV_A_ w); /* avoid race... */	3119	ev_stat_stat (EV_A_ w); /* avoid race... */
		3120	}
2416	#endif	3121	#endif
2417		3122
2418	ev_feed_event (EV_A_ w, EV_STAT);	3123	ev_feed_event (EV_A_ w, EV_STAT);
2419	}	3124	}
2420	}	3125	}
…		…
2423	ev_stat_start (EV_P_ ev_stat *w)	3128	ev_stat_start (EV_P_ ev_stat *w)
2424	{	3129	{
2425	if (expect_false (ev_is_active (w)))	3130	if (expect_false (ev_is_active (w)))
2426	return;	3131	return;
2427		3132
2428	/* since we use memcmp, we need to clear any padding data etc. */
2429	memset (&w->prev, 0, sizeof (ev_statdata));
2430	memset (&w->attr, 0, sizeof (ev_statdata));
2431
2432	ev_stat_stat (EV_A_ w);	3133	ev_stat_stat (EV_A_ w);
2433		3134
		3135	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2434	if (w->interval < MIN_STAT_INTERVAL)	3136	w->interval = MIN_STAT_INTERVAL;
2435	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2436		3137
2437	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3138	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2438	ev_set_priority (&w->timer, ev_priority (w));	3139	ev_set_priority (&w->timer, ev_priority (w));
2439		3140
2440	#if EV_USE_INOTIFY	3141	#if EV_USE_INOTIFY
2441	infy_init (EV_A);	3142	infy_init (EV_A);
2442		3143
2443	if (fs_fd >= 0)	3144	if (fs_fd >= 0)
2444	infy_add (EV_A_ w);	3145	infy_add (EV_A_ w);
2445	else	3146	else
2446	#endif	3147	#endif
2447	ev_timer_start (EV_A_ &w->timer);	3148	ev_timer_again (EV_A_ &w->timer);
2448		3149
2449	ev_start (EV_A_ (W)w, 1);	3150	ev_start (EV_A_ (W)w, 1);
		3151
		3152	EV_FREQUENT_CHECK;
2450	}	3153	}
2451		3154
2452	void	3155	void
2453	ev_stat_stop (EV_P_ ev_stat *w)	3156	ev_stat_stop (EV_P_ ev_stat *w)
2454	{	3157	{
2455	clear_pending (EV_A_ (W)w);	3158	clear_pending (EV_A_ (W)w);
2456	if (expect_false (!ev_is_active (w)))	3159	if (expect_false (!ev_is_active (w)))
2457	return;	3160	return;
2458		3161
		3162	EV_FREQUENT_CHECK;
		3163
2459	#if EV_USE_INOTIFY	3164	#if EV_USE_INOTIFY
2460	infy_del (EV_A_ w);	3165	infy_del (EV_A_ w);
2461	#endif	3166	#endif
2462	ev_timer_stop (EV_A_ &w->timer);	3167	ev_timer_stop (EV_A_ &w->timer);
2463		3168
2464	ev_stop (EV_A_ (W)w);	3169	ev_stop (EV_A_ (W)w);
		3170
		3171	EV_FREQUENT_CHECK;
2465	}	3172	}
2466	#endif	3173	#endif
2467		3174
2468	#if EV_IDLE_ENABLE	3175	#if EV_IDLE_ENABLE
2469	void	3176	void
…		…
2471	{	3178	{
2472	if (expect_false (ev_is_active (w)))	3179	if (expect_false (ev_is_active (w)))
2473	return;	3180	return;
2474		3181
2475	pri_adjust (EV_A_ (W)w);	3182	pri_adjust (EV_A_ (W)w);
		3183
		3184	EV_FREQUENT_CHECK;
2476		3185
2477	{	3186	{
2478	int active = ++idlecnt [ABSPRI (w)];	3187	int active = ++idlecnt [ABSPRI (w)];
2479		3188
2480	++idleall;	3189	++idleall;
2481	ev_start (EV_A_ (W)w, active);	3190	ev_start (EV_A_ (W)w, active);
2482		3191
2483	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	3192	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2484	idles [ABSPRI (w)][active - 1] = w;	3193	idles [ABSPRI (w)][active - 1] = w;
2485	}	3194	}
		3195
		3196	EV_FREQUENT_CHECK;
2486	}	3197	}
2487		3198
2488	void	3199	void
2489	ev_idle_stop (EV_P_ ev_idle *w)	3200	ev_idle_stop (EV_P_ ev_idle *w)
2490	{	3201	{
2491	clear_pending (EV_A_ (W)w);	3202	clear_pending (EV_A_ (W)w);
2492	if (expect_false (!ev_is_active (w)))	3203	if (expect_false (!ev_is_active (w)))
2493	return;	3204	return;
2494		3205
		3206	EV_FREQUENT_CHECK;
		3207
2495	{	3208	{
2496	int active = ev_active (w);	3209	int active = ev_active (w);
2497		3210
2498	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3211	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2499	ev_active (idles [ABSPRI (w)][active - 1]) = active;	3212	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2500		3213
2501	ev_stop (EV_A_ (W)w);	3214	ev_stop (EV_A_ (W)w);
2502	--idleall;	3215	--idleall;
2503	}	3216	}
		3217
		3218	EV_FREQUENT_CHECK;
2504	}	3219	}
2505	#endif	3220	#endif
2506		3221
2507	void	3222	void
2508	ev_prepare_start (EV_P_ ev_prepare *w)	3223	ev_prepare_start (EV_P_ ev_prepare *w)
2509	{	3224	{
2510	if (expect_false (ev_is_active (w)))	3225	if (expect_false (ev_is_active (w)))
2511	return;	3226	return;
		3227
		3228	EV_FREQUENT_CHECK;
2512		3229
2513	ev_start (EV_A_ (W)w, ++preparecnt);	3230	ev_start (EV_A_ (W)w, ++preparecnt);
2514	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3231	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2515	prepares [preparecnt - 1] = w;	3232	prepares [preparecnt - 1] = w;
		3233
		3234	EV_FREQUENT_CHECK;
2516	}	3235	}
2517		3236
2518	void	3237	void
2519	ev_prepare_stop (EV_P_ ev_prepare *w)	3238	ev_prepare_stop (EV_P_ ev_prepare *w)
2520	{	3239	{
2521	clear_pending (EV_A_ (W)w);	3240	clear_pending (EV_A_ (W)w);
2522	if (expect_false (!ev_is_active (w)))	3241	if (expect_false (!ev_is_active (w)))
2523	return;	3242	return;
2524		3243
		3244	EV_FREQUENT_CHECK;
		3245
2525	{	3246	{
2526	int active = ev_active (w);	3247	int active = ev_active (w);
2527		3248
2528	prepares [active - 1] = prepares [--preparecnt];	3249	prepares [active - 1] = prepares [--preparecnt];
2529	ev_active (prepares [active - 1]) = active;	3250	ev_active (prepares [active - 1]) = active;
2530	}	3251	}
2531		3252
2532	ev_stop (EV_A_ (W)w);	3253	ev_stop (EV_A_ (W)w);
		3254
		3255	EV_FREQUENT_CHECK;
2533	}	3256	}
2534		3257
2535	void	3258	void
2536	ev_check_start (EV_P_ ev_check *w)	3259	ev_check_start (EV_P_ ev_check *w)
2537	{	3260	{
2538	if (expect_false (ev_is_active (w)))	3261	if (expect_false (ev_is_active (w)))
2539	return;	3262	return;
		3263
		3264	EV_FREQUENT_CHECK;
2540		3265
2541	ev_start (EV_A_ (W)w, ++checkcnt);	3266	ev_start (EV_A_ (W)w, ++checkcnt);
2542	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3267	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2543	checks [checkcnt - 1] = w;	3268	checks [checkcnt - 1] = w;
		3269
		3270	EV_FREQUENT_CHECK;
2544	}	3271	}
2545		3272
2546	void	3273	void
2547	ev_check_stop (EV_P_ ev_check *w)	3274	ev_check_stop (EV_P_ ev_check *w)
2548	{	3275	{
2549	clear_pending (EV_A_ (W)w);	3276	clear_pending (EV_A_ (W)w);
2550	if (expect_false (!ev_is_active (w)))	3277	if (expect_false (!ev_is_active (w)))
2551	return;	3278	return;
2552		3279
		3280	EV_FREQUENT_CHECK;
		3281
2553	{	3282	{
2554	int active = ev_active (w);	3283	int active = ev_active (w);
2555		3284
2556	checks [active - 1] = checks [--checkcnt];	3285	checks [active - 1] = checks [--checkcnt];
2557	ev_active (checks [active - 1]) = active;	3286	ev_active (checks [active - 1]) = active;
2558	}	3287	}
2559		3288
2560	ev_stop (EV_A_ (W)w);	3289	ev_stop (EV_A_ (W)w);
		3290
		3291	EV_FREQUENT_CHECK;
2561	}	3292	}
2562		3293
2563	#if EV_EMBED_ENABLE	3294	#if EV_EMBED_ENABLE
2564	void noinline	3295	void noinline
2565	ev_embed_sweep (EV_P_ ev_embed *w)	3296	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2582	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3313	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2583	{	3314	{
2584	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3315	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2585		3316
2586	{	3317	{
2587	struct ev_loop *loop = w->other;	3318	EV_P = w->other;
2588		3319
2589	while (fdchangecnt)	3320	while (fdchangecnt)
2590	{	3321	{
2591	fd_reify (EV_A);	3322	fd_reify (EV_A);
2592	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3323	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2593	}	3324	}
2594	}	3325	}
2595	}	3326	}
2596		3327
		3328	static void
		3329	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3330	{
		3331	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3332
		3333	ev_embed_stop (EV_A_ w);
		3334
		3335	{
		3336	EV_P = w->other;
		3337
		3338	ev_loop_fork (EV_A);
		3339	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3340	}
		3341
		3342	ev_embed_start (EV_A_ w);
		3343	}
		3344
2597	#if 0	3345	#if 0
2598	static void	3346	static void
2599	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3347	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2600	{	3348	{
2601	ev_idle_stop (EV_A_ idle);	3349	ev_idle_stop (EV_A_ idle);
…		…
2607	{	3355	{
2608	if (expect_false (ev_is_active (w)))	3356	if (expect_false (ev_is_active (w)))
2609	return;	3357	return;
2610		3358
2611	{	3359	{
2612	struct ev_loop *loop = w->other;	3360	EV_P = w->other;
2613	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3361	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2614	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3362	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2615	}	3363	}
		3364
		3365	EV_FREQUENT_CHECK;
2616		3366
2617	ev_set_priority (&w->io, ev_priority (w));	3367	ev_set_priority (&w->io, ev_priority (w));
2618	ev_io_start (EV_A_ &w->io);	3368	ev_io_start (EV_A_ &w->io);
2619		3369
2620	ev_prepare_init (&w->prepare, embed_prepare_cb);	3370	ev_prepare_init (&w->prepare, embed_prepare_cb);
2621	ev_set_priority (&w->prepare, EV_MINPRI);	3371	ev_set_priority (&w->prepare, EV_MINPRI);
2622	ev_prepare_start (EV_A_ &w->prepare);	3372	ev_prepare_start (EV_A_ &w->prepare);
2623		3373
		3374	ev_fork_init (&w->fork, embed_fork_cb);
		3375	ev_fork_start (EV_A_ &w->fork);
		3376
2624	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3377	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2625		3378
2626	ev_start (EV_A_ (W)w, 1);	3379	ev_start (EV_A_ (W)w, 1);
		3380
		3381	EV_FREQUENT_CHECK;
2627	}	3382	}
2628		3383
2629	void	3384	void
2630	ev_embed_stop (EV_P_ ev_embed *w)	3385	ev_embed_stop (EV_P_ ev_embed *w)
2631	{	3386	{
2632	clear_pending (EV_A_ (W)w);	3387	clear_pending (EV_A_ (W)w);
2633	if (expect_false (!ev_is_active (w)))	3388	if (expect_false (!ev_is_active (w)))
2634	return;	3389	return;
2635		3390
		3391	EV_FREQUENT_CHECK;
		3392
2636	ev_io_stop (EV_A_ &w->io);	3393	ev_io_stop (EV_A_ &w->io);
2637	ev_prepare_stop (EV_A_ &w->prepare);	3394	ev_prepare_stop (EV_A_ &w->prepare);
		3395	ev_fork_stop (EV_A_ &w->fork);
2638		3396
2639	ev_stop (EV_A_ (W)w);	3397	EV_FREQUENT_CHECK;
2640	}	3398	}
2641	#endif	3399	#endif
2642		3400
2643	#if EV_FORK_ENABLE	3401	#if EV_FORK_ENABLE
2644	void	3402	void
2645	ev_fork_start (EV_P_ ev_fork *w)	3403	ev_fork_start (EV_P_ ev_fork *w)
2646	{	3404	{
2647	if (expect_false (ev_is_active (w)))	3405	if (expect_false (ev_is_active (w)))
2648	return;	3406	return;
		3407
		3408	EV_FREQUENT_CHECK;
2649		3409
2650	ev_start (EV_A_ (W)w, ++forkcnt);	3410	ev_start (EV_A_ (W)w, ++forkcnt);
2651	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3411	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2652	forks [forkcnt - 1] = w;	3412	forks [forkcnt - 1] = w;
		3413
		3414	EV_FREQUENT_CHECK;
2653	}	3415	}
2654		3416
2655	void	3417	void
2656	ev_fork_stop (EV_P_ ev_fork *w)	3418	ev_fork_stop (EV_P_ ev_fork *w)
2657	{	3419	{
2658	clear_pending (EV_A_ (W)w);	3420	clear_pending (EV_A_ (W)w);
2659	if (expect_false (!ev_is_active (w)))	3421	if (expect_false (!ev_is_active (w)))
2660	return;	3422	return;
2661		3423
		3424	EV_FREQUENT_CHECK;
		3425
2662	{	3426	{
2663	int active = ev_active (w);	3427	int active = ev_active (w);
2664		3428
2665	forks [active - 1] = forks [--forkcnt];	3429	forks [active - 1] = forks [--forkcnt];
2666	ev_active (forks [active - 1]) = active;	3430	ev_active (forks [active - 1]) = active;
2667	}	3431	}
2668		3432
2669	ev_stop (EV_A_ (W)w);	3433	ev_stop (EV_A_ (W)w);
		3434
		3435	EV_FREQUENT_CHECK;
2670	}	3436	}
2671	#endif	3437	#endif
2672		3438
2673	#if EV_ASYNC_ENABLE	3439	#if EV_ASYNC_ENABLE
2674	void	3440	void
…		…
2676	{	3442	{
2677	if (expect_false (ev_is_active (w)))	3443	if (expect_false (ev_is_active (w)))
2678	return;	3444	return;
2679		3445
2680	evpipe_init (EV_A);	3446	evpipe_init (EV_A);
		3447
		3448	EV_FREQUENT_CHECK;
2681		3449
2682	ev_start (EV_A_ (W)w, ++asynccnt);	3450	ev_start (EV_A_ (W)w, ++asynccnt);
2683	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3451	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2684	asyncs [asynccnt - 1] = w;	3452	asyncs [asynccnt - 1] = w;
		3453
		3454	EV_FREQUENT_CHECK;
2685	}	3455	}
2686		3456
2687	void	3457	void
2688	ev_async_stop (EV_P_ ev_async *w)	3458	ev_async_stop (EV_P_ ev_async *w)
2689	{	3459	{
2690	clear_pending (EV_A_ (W)w);	3460	clear_pending (EV_A_ (W)w);
2691	if (expect_false (!ev_is_active (w)))	3461	if (expect_false (!ev_is_active (w)))
2692	return;	3462	return;
2693		3463
		3464	EV_FREQUENT_CHECK;
		3465
2694	{	3466	{
2695	int active = ev_active (w);	3467	int active = ev_active (w);
2696		3468
2697	asyncs [active - 1] = asyncs [--asynccnt];	3469	asyncs [active - 1] = asyncs [--asynccnt];
2698	ev_active (asyncs [active - 1]) = active;	3470	ev_active (asyncs [active - 1]) = active;
2699	}	3471	}
2700		3472
2701	ev_stop (EV_A_ (W)w);	3473	ev_stop (EV_A_ (W)w);
		3474
		3475	EV_FREQUENT_CHECK;
2702	}	3476	}
2703		3477
2704	void	3478	void
2705	ev_async_send (EV_P_ ev_async *w)	3479	ev_async_send (EV_P_ ev_async *w)
2706	{	3480	{
2707	w->sent = 1;	3481	w->sent = 1;
2708	evpipe_write (EV_A_ &gotasync);	3482	evpipe_write (EV_A_ &async_pending);
2709	}	3483	}
2710	#endif	3484	#endif
2711		3485
2712	/*****************************************************************************/	3486	/*****************************************************************************/
2713		3487
…		…
2723	once_cb (EV_P_ struct ev_once *once, int revents)	3497	once_cb (EV_P_ struct ev_once *once, int revents)
2724	{	3498	{
2725	void (*cb)(int revents, void *arg) = once->cb;	3499	void (*cb)(int revents, void *arg) = once->cb;
2726	void *arg = once->arg;	3500	void *arg = once->arg;
2727		3501
2728	ev_io_stop (EV_A_ &once->io);	3502	ev_io_stop (EV_A_ &once->io);
2729	ev_timer_stop (EV_A_ &once->to);	3503	ev_timer_stop (EV_A_ &once->to);
2730	ev_free (once);	3504	ev_free (once);
2731		3505
2732	cb (revents, arg);	3506	cb (revents, arg);
2733	}	3507	}
2734		3508
2735	static void	3509	static void
2736	once_cb_io (EV_P_ ev_io *w, int revents)	3510	once_cb_io (EV_P_ ev_io *w, int revents)
2737	{	3511	{
2738	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3512	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3513
		3514	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2739	}	3515	}
2740		3516
2741	static void	3517	static void
2742	once_cb_to (EV_P_ ev_timer *w, int revents)	3518	once_cb_to (EV_P_ ev_timer *w, int revents)
2743	{	3519	{
2744	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3520	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3521
		3522	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2745	}	3523	}
2746		3524
2747	void	3525	void
2748	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3526	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2749	{	3527	{
…		…
2771	ev_timer_set (&once->to, timeout, 0.);	3549	ev_timer_set (&once->to, timeout, 0.);
2772	ev_timer_start (EV_A_ &once->to);	3550	ev_timer_start (EV_A_ &once->to);
2773	}	3551	}
2774	}	3552	}
2775		3553
		3554	/*****************************************************************************/
		3555
		3556	#if EV_WALK_ENABLE
		3557	void
		3558	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3559	{
		3560	int i, j;
		3561	ev_watcher_list *wl, *wn;
		3562
		3563	if (types & (EV_IO | EV_EMBED))
		3564	for (i = 0; i < anfdmax; ++i)
		3565	for (wl = anfds [i].head; wl; )
		3566	{
		3567	wn = wl->next;
		3568
		3569	#if EV_EMBED_ENABLE
		3570	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3571	{
		3572	if (types & EV_EMBED)
		3573	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3574	}
		3575	else
		3576	#endif
		3577	#if EV_USE_INOTIFY
		3578	if (ev_cb ((ev_io *)wl) == infy_cb)
		3579	;
		3580	else
		3581	#endif
		3582	if ((ev_io *)wl != &pipe_w)
		3583	if (types & EV_IO)
		3584	cb (EV_A_ EV_IO, wl);
		3585
		3586	wl = wn;
		3587	}
		3588
		3589	if (types & (EV_TIMER | EV_STAT))
		3590	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3591	#if EV_STAT_ENABLE
		3592	/*TODO: timer is not always active*/
		3593	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3594	{
		3595	if (types & EV_STAT)
		3596	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3597	}
		3598	else
		3599	#endif
		3600	if (types & EV_TIMER)
		3601	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3602
		3603	#if EV_PERIODIC_ENABLE
		3604	if (types & EV_PERIODIC)
		3605	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3606	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3607	#endif
		3608
		3609	#if EV_IDLE_ENABLE
		3610	if (types & EV_IDLE)
		3611	for (j = NUMPRI; i--; )
		3612	for (i = idlecnt [j]; i--; )
		3613	cb (EV_A_ EV_IDLE, idles [j][i]);
		3614	#endif
		3615
		3616	#if EV_FORK_ENABLE
		3617	if (types & EV_FORK)
		3618	for (i = forkcnt; i--; )
		3619	if (ev_cb (forks [i]) != embed_fork_cb)
		3620	cb (EV_A_ EV_FORK, forks [i]);
		3621	#endif
		3622
		3623	#if EV_ASYNC_ENABLE
		3624	if (types & EV_ASYNC)
		3625	for (i = asynccnt; i--; )
		3626	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3627	#endif
		3628
		3629	if (types & EV_PREPARE)
		3630	for (i = preparecnt; i--; )
		3631	#if EV_EMBED_ENABLE
		3632	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3633	#endif
		3634	cb (EV_A_ EV_PREPARE, prepares [i]);
		3635
		3636	if (types & EV_CHECK)
		3637	for (i = checkcnt; i--; )
		3638	cb (EV_A_ EV_CHECK, checks [i]);
		3639
		3640	if (types & EV_SIGNAL)
		3641	for (i = 0; i < EV_NSIG - 1; ++i)
		3642	for (wl = signals [i].head; wl; )
		3643	{
		3644	wn = wl->next;
		3645	cb (EV_A_ EV_SIGNAL, wl);
		3646	wl = wn;
		3647	}
		3648
		3649	if (types & EV_CHILD)
		3650	for (i = EV_PID_HASHSIZE; i--; )
		3651	for (wl = childs [i]; wl; )
		3652	{
		3653	wn = wl->next;
		3654	cb (EV_A_ EV_CHILD, wl);
		3655	wl = wn;
		3656	}
		3657	/* EV_STAT 0x00001000 /* stat data changed */
		3658	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3659	}
		3660	#endif
		3661
2776	#if EV_MULTIPLICITY	3662	#if EV_MULTIPLICITY
2777	#include "ev_wrap.h"	3663	#include "ev_wrap.h"
2778	#endif	3664	#endif
2779		3665
2780	#ifdef __cplusplus	3666	#ifdef __cplusplus

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