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Comparing libev/ev.c (file contents):
Revision 1.233 by root, Tue May 6 23:34:16 2008 UTC vs.
Revision 1.323 by root, Wed Jan 13 12:44:33 2010 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
…		…
96	# define EV_USE_EPOLL 0	110	# define EV_USE_EPOLL 0
97	# endif	111	# endif
98	# endif	112	# endif
99		113
100	# ifndef EV_USE_KQUEUE	114	# ifndef EV_USE_KQUEUE
101	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	115	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
102	# define EV_USE_KQUEUE 1	116	# define EV_USE_KQUEUE 1
103	# else	117	# else
104	# define EV_USE_KQUEUE 0	118	# define EV_USE_KQUEUE 0
105	# endif	119	# endif
106	# endif	120	# endif
…		…
119	# else	133	# else
120	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
121	# endif	135	# endif
122	# endif	136	# endif
123		137
		138	# ifndef EV_USE_SIGNALFD
		139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		140	# define EV_USE_SIGNALFD 1
		141	# else
		142	# define EV_USE_SIGNALFD 0
		143	# endif
		144	# endif
		145
124	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
125	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
126	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD 1
127	# else	149	# else
128	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
129	# endif	151	# endif
130	# endif	152	# endif
131		153
132	#endif	154	#endif
133		155
134	#include <math.h>	156	#include <math.h>
135	#include <stdlib.h>	157	#include <stdlib.h>
		158	#include <string.h>
136	#include <fcntl.h>	159	#include <fcntl.h>
137	#include <stddef.h>	160	#include <stddef.h>
138		161
139	#include <stdio.h>	162	#include <stdio.h>
140		163
…		…
154	#ifndef _WIN32	177	#ifndef _WIN32
155	# include <sys/time.h>	178	# include <sys/time.h>
156	# include <sys/wait.h>	179	# include <sys/wait.h>
157	# include <unistd.h>	180	# include <unistd.h>
158	#else	181	#else
		182	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	183	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	184	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	185	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	186	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	187	# endif
164	#endif	188	#endif
165		189
166	/* this block tries to deduce configuration from header-defined symbols and defaults */	190	/* this block tries to deduce configuration from header-defined symbols and defaults */
167		191
		192	/* try to deduce the maximum number of signals on this platform */
		193	#if defined (EV_NSIG)
		194	/* use what's provided */
		195	#elif defined (NSIG)
		196	# define EV_NSIG (NSIG)
		197	#elif defined(_NSIG)
		198	# define EV_NSIG (_NSIG)
		199	#elif defined (SIGMAX)
		200	# define EV_NSIG (SIGMAX+1)
		201	#elif defined (SIG_MAX)
		202	# define EV_NSIG (SIG_MAX+1)
		203	#elif defined (_SIG_MAX)
		204	# define EV_NSIG (_SIG_MAX+1)
		205	#elif defined (MAXSIG)
		206	# define EV_NSIG (MAXSIG+1)
		207	#elif defined (MAX_SIG)
		208	# define EV_NSIG (MAX_SIG+1)
		209	#elif defined (SIGARRAYSIZE)
		210	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		211	#elif defined (_sys_nsig)
		212	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		213	#else
		214	# error "unable to find value for NSIG, please report"
		215	/* to make it compile regardless, just remove the above line */
		216	# define EV_NSIG 65
		217	#endif
		218
		219	#ifndef EV_USE_CLOCK_SYSCALL
		220	# if __linux && __GLIBC__ >= 2
		221	# define EV_USE_CLOCK_SYSCALL 1
		222	# else
		223	# define EV_USE_CLOCK_SYSCALL 0
		224	# endif
		225	#endif
		226
168	#ifndef EV_USE_MONOTONIC	227	#ifndef EV_USE_MONOTONIC
		228	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		229	# define EV_USE_MONOTONIC 1
		230	# else
169	# define EV_USE_MONOTONIC 0	231	# define EV_USE_MONOTONIC 0
		232	# endif
170	#endif	233	#endif
171		234
172	#ifndef EV_USE_REALTIME	235	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	236	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	237	#endif
175		238
176	#ifndef EV_USE_NANOSLEEP	239	#ifndef EV_USE_NANOSLEEP
		240	# if _POSIX_C_SOURCE >= 199309L
		241	# define EV_USE_NANOSLEEP 1
		242	# else
177	# define EV_USE_NANOSLEEP 0	243	# define EV_USE_NANOSLEEP 0
		244	# endif
178	#endif	245	#endif
179		246
180	#ifndef EV_USE_SELECT	247	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	248	# define EV_USE_SELECT 1
182	#endif	249	#endif
…		…
235	# else	302	# else
236	# define EV_USE_EVENTFD 0	303	# define EV_USE_EVENTFD 0
237	# endif	304	# endif
238	#endif	305	#endif
239		306
		307	#ifndef EV_USE_SIGNALFD
		308	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		309	# define EV_USE_SIGNALFD 1
		310	# else
		311	# define EV_USE_SIGNALFD 0
		312	# endif
		313	#endif
		314
		315	#if 0 /* debugging */
		316	# define EV_VERIFY 3
		317	# define EV_USE_4HEAP 1
		318	# define EV_HEAP_CACHE_AT 1
		319	#endif
		320
		321	#ifndef EV_VERIFY
		322	# define EV_VERIFY !EV_MINIMAL
		323	#endif
		324
		325	#ifndef EV_USE_4HEAP
		326	# define EV_USE_4HEAP !EV_MINIMAL
		327	#endif
		328
		329	#ifndef EV_HEAP_CACHE_AT
		330	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		331	#endif
		332
		333	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		334	/* which makes programs even slower. might work on other unices, too. */
		335	#if EV_USE_CLOCK_SYSCALL
		336	# include <syscall.h>
		337	# ifdef SYS_clock_gettime
		338	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		339	# undef EV_USE_MONOTONIC
		340	# define EV_USE_MONOTONIC 1
		341	# else
		342	# undef EV_USE_CLOCK_SYSCALL
		343	# define EV_USE_CLOCK_SYSCALL 0
		344	# endif
		345	#endif
		346
240	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	347	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
241		348
242	#ifndef CLOCK_MONOTONIC	349	#ifndef CLOCK_MONOTONIC
243	# undef EV_USE_MONOTONIC	350	# undef EV_USE_MONOTONIC
244	# define EV_USE_MONOTONIC 0	351	# define EV_USE_MONOTONIC 0
…		…
259	# include <sys/select.h>	366	# include <sys/select.h>
260	# endif	367	# endif
261	#endif	368	#endif
262		369
263	#if EV_USE_INOTIFY	370	#if EV_USE_INOTIFY
		371	# include <sys/utsname.h>
		372	# include <sys/statfs.h>
264	# include <sys/inotify.h>	373	# include <sys/inotify.h>
		374	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		375	# ifndef IN_DONT_FOLLOW
		376	# undef EV_USE_INOTIFY
		377	# define EV_USE_INOTIFY 0
		378	# endif
265	#endif	379	#endif
266		380
267	#if EV_SELECT_IS_WINSOCKET	381	#if EV_SELECT_IS_WINSOCKET
268	# include <winsock.h>	382	# include <winsock.h>
269	#endif	383	#endif
270		384
271	#if EV_USE_EVENTFD	385	#if EV_USE_EVENTFD
272	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	386	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273	# include <stdint.h>	387	# include <stdint.h>
		388	# ifndef EFD_NONBLOCK
		389	# define EFD_NONBLOCK O_NONBLOCK
		390	# endif
		391	# ifndef EFD_CLOEXEC
		392	# ifdef O_CLOEXEC
		393	# define EFD_CLOEXEC O_CLOEXEC
		394	# else
		395	# define EFD_CLOEXEC 02000000
		396	# endif
		397	# endif
274	# ifdef __cplusplus	398	# ifdef __cplusplus
275	extern "C" {	399	extern "C" {
276	# endif	400	# endif
277	int eventfd (unsigned int initval, int flags);	401	int eventfd (unsigned int initval, int flags);
278	# ifdef __cplusplus	402	# ifdef __cplusplus
279	}	403	}
280	# endif	404	# endif
281	#endif	405	#endif
282		406
		407	#if EV_USE_SIGNALFD
		408	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		409	# include <stdint.h>
		410	# ifndef SFD_NONBLOCK
		411	# define SFD_NONBLOCK O_NONBLOCK
		412	# endif
		413	# ifndef SFD_CLOEXEC
		414	# ifdef O_CLOEXEC
		415	# define SFD_CLOEXEC O_CLOEXEC
		416	# else
		417	# define SFD_CLOEXEC 02000000
		418	# endif
		419	# endif
		420	# ifdef __cplusplus
		421	extern "C" {
		422	# endif
		423	int signalfd (int fd, const sigset_t *mask, int flags);
		424
		425	struct signalfd_siginfo
		426	{
		427	uint32_t ssi_signo;
		428	char pad[128 - sizeof (uint32_t)];
		429	};
		430	# ifdef __cplusplus
		431	}
		432	# endif
		433	#endif
		434
		435
283	/**/	436	/**/
		437
		438	#if EV_VERIFY >= 3
		439	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		440	#else
		441	# define EV_FREQUENT_CHECK do { } while (0)
		442	#endif
284		443
285	/*	444	/*
286	* This is used to avoid floating point rounding problems.	445	* This is used to avoid floating point rounding problems.
287	* It is added to ev_rt_now when scheduling periodics	446	* It is added to ev_rt_now when scheduling periodics
288	* to ensure progress, time-wise, even when rounding	447	* to ensure progress, time-wise, even when rounding
…		…
292	*/	451	*/
293	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	452	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
294		453
295	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	454	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
296	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	455	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
297	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
298		456
299	#if __GNUC__ >= 4	457	#if __GNUC__ >= 4
300	# define expect(expr,value) __builtin_expect ((expr),(value))	458	# define expect(expr,value) __builtin_expect ((expr),(value))
301	# define noinline __attribute__ ((noinline))	459	# define noinline __attribute__ ((noinline))
302	#else	460	#else
…		…
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 (handle, 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
		614	/* hash table entry per inotify-id */
427	typedef struct	615	typedef struct
428	{	616	{
429	WL head;	617	WL head;
430	} ANFS;	618	} ANFS;
		619	#endif
		620
		621	/* Heap Entry */
		622	#if EV_HEAP_CACHE_AT
		623	/* a heap element */
		624	typedef struct {
		625	ev_tstamp at;
		626	WT w;
		627	} ANHE;
		628
		629	#define ANHE_w(he) (he).w /* access watcher, read-write */
		630	#define ANHE_at(he) (he).at /* access cached at, read-only */
		631	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		632	#else
		633	/* a heap element */
		634	typedef WT ANHE;
		635
		636	#define ANHE_w(he) (he)
		637	#define ANHE_at(he) (he)->at
		638	#define ANHE_at_cache(he)
431	#endif	639	#endif
432		640
433	#if EV_MULTIPLICITY	641	#if EV_MULTIPLICITY
434		642
435	struct ev_loop	643	struct ev_loop
…		…
454		662
455	static int ev_default_loop_ptr;	663	static int ev_default_loop_ptr;
456		664
457	#endif	665	#endif
458		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
459	/*****************************************************************************/	679	/*****************************************************************************/
460		680
		681	#ifndef EV_HAVE_EV_TIME
461	ev_tstamp	682	ev_tstamp
462	ev_time (void)	683	ev_time (void)
463	{	684	{
464	#if EV_USE_REALTIME	685	#if EV_USE_REALTIME
		686	if (expect_true (have_realtime))
		687	{
465	struct timespec ts;	688	struct timespec ts;
466	clock_gettime (CLOCK_REALTIME, &ts);	689	clock_gettime (CLOCK_REALTIME, &ts);
467	return ts.tv_sec + ts.tv_nsec * 1e-9;	690	return ts.tv_sec + ts.tv_nsec * 1e-9;
468	#else	691	}
		692	#endif
		693
469	struct timeval tv;	694	struct timeval tv;
470	gettimeofday (&tv, 0);	695	gettimeofday (&tv, 0);
471	return tv.tv_sec + tv.tv_usec * 1e-6;	696	return tv.tv_sec + tv.tv_usec * 1e-6;
472	#endif
473	}	697	}
		698	#endif
474		699
475	ev_tstamp inline_size	700	inline_size ev_tstamp
476	get_clock (void)	701	get_clock (void)
477	{	702	{
478	#if EV_USE_MONOTONIC	703	#if EV_USE_MONOTONIC
479	if (expect_true (have_monotonic))	704	if (expect_true (have_monotonic))
480	{	705	{
…		…
513	struct timeval tv;	738	struct timeval tv;
514		739
515	tv.tv_sec = (time_t)delay;	740	tv.tv_sec = (time_t)delay;
516	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	741	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
517		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 */
518	select (0, 0, 0, 0, &tv);	746	select (0, 0, 0, 0, &tv);
519	#endif	747	#endif
520	}	748	}
521	}	749	}
522		750
523	/*****************************************************************************/	751	/*****************************************************************************/
524		752
525	#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 */
526		754
527	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
528	array_nextsize (int elem, int cur, int cnt)	758	array_nextsize (int elem, int cur, int cnt)
529	{	759	{
530	int ncur = cur + 1;	760	int ncur = cur + 1;
531		761
532	do	762	do
…		…
549	array_realloc (int elem, void *base, int *cur, int cnt)	779	array_realloc (int elem, void *base, int *cur, int cnt)
550	{	780	{
551	*cur = array_nextsize (elem, *cur, cnt);	781	*cur = array_nextsize (elem, *cur, cnt);
552	return ev_realloc (base, elem * *cur);	782	return ev_realloc (base, elem * *cur);
553	}	783	}
		784
		785	#define array_init_zero(base,count) \
		786	memset ((void *)(base), 0, sizeof (*(base)) * (count))
554		787
555	#define array_needsize(type,base,cur,cnt,init) \	788	#define array_needsize(type,base,cur,cnt,init) \
556	if (expect_false ((cnt) > (cur))) \	789	if (expect_false ((cnt) > (cur))) \
557	{ \	790	{ \
558	int ocur_ = (cur); \	791	int ocur_ = (cur); \
…		…
570	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	803	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
571	}	804	}
572	#endif	805	#endif
573		806
574	#define array_free(stem, idx) \	807	#define array_free(stem, idx) \
575	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
576		809
577	/*****************************************************************************/	810	/*****************************************************************************/
		811
		812	/* dummy callback for pending events */
		813	static void noinline
		814	pendingcb (EV_P_ ev_prepare *w, int revents)
		815	{
		816	}
578		817
579	void noinline	818	void noinline
580	ev_feed_event (EV_P_ void *w, int revents)	819	ev_feed_event (EV_P_ void *w, int revents)
581	{	820	{
582	W w_ = (W)w;	821	W w_ = (W)w;
…		…
591	pendings [pri][w_->pending - 1].w = w_;	830	pendings [pri][w_->pending - 1].w = w_;
592	pendings [pri][w_->pending - 1].events = revents;	831	pendings [pri][w_->pending - 1].events = revents;
593	}	832	}
594	}	833	}
595		834
596	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
597	queue_events (EV_P_ W *events, int eventcnt, int type)	851	queue_events (EV_P_ W *events, int eventcnt, int type)
598	{	852	{
599	int i;	853	int i;
600		854
601	for (i = 0; i < eventcnt; ++i)	855	for (i = 0; i < eventcnt; ++i)
602	ev_feed_event (EV_A_ events [i], type);	856	ev_feed_event (EV_A_ events [i], type);
603	}	857	}
604		858
605	/*****************************************************************************/	859	/*****************************************************************************/
606		860
607	void inline_size	861	inline_speed void
608	anfds_init (ANFD *base, int count)
609	{
610	while (count--)
611	{
612	base->head = 0;
613	base->events = EV_NONE;
614	base->reify = 0;
615
616	++base;
617	}
618	}
619
620	void inline_speed
621	fd_event (EV_P_ int fd, int revents)	862	fd_event_nc (EV_P_ int fd, int revents)
622	{	863	{
623	ANFD *anfd = anfds + fd;	864	ANFD *anfd = anfds + fd;
624	ev_io *w;	865	ev_io *w;
625		866
626	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)
…		…
630	if (ev)	871	if (ev)
631	ev_feed_event (EV_A_ (W)w, ev);	872	ev_feed_event (EV_A_ (W)w, ev);
632	}	873	}
633	}	874	}
634		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
635	void	887	void
636	ev_feed_fd_event (EV_P_ int fd, int revents)	888	ev_feed_fd_event (EV_P_ int fd, int revents)
637	{	889	{
638	if (fd >= 0 && fd < anfdmax)	890	if (fd >= 0 && fd < anfdmax)
639	fd_event (EV_A_ fd, revents);	891	fd_event_nc (EV_A_ fd, revents);
640	}	892	}
641		893
642	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
643	fd_reify (EV_P)	897	fd_reify (EV_P)
644	{	898	{
645	int i;	899	int i;
646		900
647	for (i = 0; i < fdchangecnt; ++i)	901	for (i = 0; i < fdchangecnt; ++i)
…		…
656	events |= (unsigned char)w->events;	910	events |= (unsigned char)w->events;
657		911
658	#if EV_SELECT_IS_WINSOCKET	912	#if EV_SELECT_IS_WINSOCKET
659	if (events)	913	if (events)
660	{	914	{
661	unsigned long argp;	915	unsigned long arg;
662	#ifdef EV_FD_TO_WIN32_HANDLE
663	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	916	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
664	#else
665	anfd->handle = _get_osfhandle (fd);
666	#endif
667	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	917	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
668	}	918	}
669	#endif	919	#endif
670		920
671	{	921	{
672	unsigned char o_events = anfd->events;	922	unsigned char o_events = anfd->events;
673	unsigned char o_reify = anfd->reify;	923	unsigned char o_reify = anfd->reify;
674		924
675	anfd->reify = 0;	925	anfd->reify = 0;
676	anfd->events = events;	926	anfd->events = events;
677		927
678	if (o_events != events || o_reify & EV_IOFDSET)	928	if (o_events != events || o_reify & EV__IOFDSET)
679	backend_modify (EV_A_ fd, o_events, events);	929	backend_modify (EV_A_ fd, o_events, events);
680	}	930	}
681	}	931	}
682		932
683	fdchangecnt = 0;	933	fdchangecnt = 0;
684	}	934	}
685		935
686	void inline_size	936	/* something about the given fd changed */
		937	inline_size void
687	fd_change (EV_P_ int fd, int flags)	938	fd_change (EV_P_ int fd, int flags)
688	{	939	{
689	unsigned char reify = anfds [fd].reify;	940	unsigned char reify = anfds [fd].reify;
690	anfds [fd].reify |= flags;	941	anfds [fd].reify |= flags;
691		942
…		…
695	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	946	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
696	fdchanges [fdchangecnt - 1] = fd;	947	fdchanges [fdchangecnt - 1] = fd;
697	}	948	}
698	}	949	}
699		950
700	void inline_speed	951	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		952	inline_speed void
701	fd_kill (EV_P_ int fd)	953	fd_kill (EV_P_ int fd)
702	{	954	{
703	ev_io *w;	955	ev_io *w;
704		956
705	while ((w = (ev_io *)anfds [fd].head))	957	while ((w = (ev_io *)anfds [fd].head))
…		…
707	ev_io_stop (EV_A_ w);	959	ev_io_stop (EV_A_ w);
708	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);
709	}	961	}
710	}	962	}
711		963
712	int inline_size	964	/* check whether the given fd is atcually valid, for error recovery */
		965	inline_size int
713	fd_valid (int fd)	966	fd_valid (int fd)
714	{	967	{
715	#ifdef _WIN32	968	#ifdef _WIN32
716	return _get_osfhandle (fd) != -1;	969	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
717	#else	970	#else
718	return fcntl (fd, F_GETFD) != -1;	971	return fcntl (fd, F_GETFD) != -1;
719	#endif	972	#endif
720	}	973	}
721		974
…		…
725	{	978	{
726	int fd;	979	int fd;
727		980
728	for (fd = 0; fd < anfdmax; ++fd)	981	for (fd = 0; fd < anfdmax; ++fd)
729	if (anfds [fd].events)	982	if (anfds [fd].events)
730	if (!fd_valid (fd) == -1 && errno == EBADF)	983	if (!fd_valid (fd) && errno == EBADF)
731	fd_kill (EV_A_ fd);	984	fd_kill (EV_A_ fd);
732	}	985	}
733		986
734	/* 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 */
735	static void noinline	988	static void noinline
…		…
739		992
740	for (fd = anfdmax; fd--; )	993	for (fd = anfdmax; fd--; )
741	if (anfds [fd].events)	994	if (anfds [fd].events)
742	{	995	{
743	fd_kill (EV_A_ fd);	996	fd_kill (EV_A_ fd);
744	return;	997	break;
745	}	998	}
746	}	999	}
747		1000
748	/* 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 */
749	static void noinline	1002	static void noinline
…		…
753		1006
754	for (fd = 0; fd < anfdmax; ++fd)	1007	for (fd = 0; fd < anfdmax; ++fd)
755	if (anfds [fd].events)	1008	if (anfds [fd].events)
756	{	1009	{
757	anfds [fd].events = 0;	1010	anfds [fd].events = 0;
		1011	anfds [fd].emask = 0;
758	fd_change (EV_A_ fd, EV_IOFDSET | 1);	1012	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
759	}	1013	}
760	}	1014	}
761		1015
762	/*****************************************************************************/	1016	/*****************************************************************************/
763		1017
		1018	/*
		1019	* the heap functions want a real array index. array index 0 uis guaranteed to not
		1020	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		1021	* the branching factor of the d-tree.
		1022	*/
		1023
		1024	/*
		1025	* at the moment we allow libev the luxury of two heaps,
		1026	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		1027	* which is more cache-efficient.
		1028	* the difference is about 5% with 50000+ watchers.
		1029	*/
		1030	#if EV_USE_4HEAP
		1031
		1032	#define DHEAP 4
		1033	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		1034	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		1035	#define UPHEAP_DONE(p,k) ((p) == (k))
		1036
		1037	/* away from the root */
		1038	inline_speed void
		1039	downheap (ANHE *heap, int N, int k)
		1040	{
		1041	ANHE he = heap [k];
		1042	ANHE *E = heap + N + HEAP0;
		1043
		1044	for (;;)
		1045	{
		1046	ev_tstamp minat;
		1047	ANHE *minpos;
		1048	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
		1049
		1050	/* find minimum child */
		1051	if (expect_true (pos + DHEAP - 1 < E))
		1052	{
		1053	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1054	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1055	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1056	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1057	}
		1058	else if (pos < E)
		1059	{
		1060	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1061	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1062	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1063	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1064	}
		1065	else
		1066	break;
		1067
		1068	if (ANHE_at (he) <= minat)
		1069	break;
		1070
		1071	heap [k] = *minpos;
		1072	ev_active (ANHE_w (*minpos)) = k;
		1073
		1074	k = minpos - heap;
		1075	}
		1076
		1077	heap [k] = he;
		1078	ev_active (ANHE_w (he)) = k;
		1079	}
		1080
		1081	#else /* 4HEAP */
		1082
		1083	#define HEAP0 1
		1084	#define HPARENT(k) ((k) >> 1)
		1085	#define UPHEAP_DONE(p,k) (!(p))
		1086
		1087	/* away from the root */
		1088	inline_speed void
		1089	downheap (ANHE *heap, int N, int k)
		1090	{
		1091	ANHE he = heap [k];
		1092
		1093	for (;;)
		1094	{
		1095	int c = k << 1;
		1096
		1097	if (c >= N + HEAP0)
		1098	break;
		1099
		1100	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		1101	? 1 : 0;
		1102
		1103	if (ANHE_at (he) <= ANHE_at (heap [c]))
		1104	break;
		1105
		1106	heap [k] = heap [c];
		1107	ev_active (ANHE_w (heap [k])) = k;
		1108
		1109	k = c;
		1110	}
		1111
		1112	heap [k] = he;
		1113	ev_active (ANHE_w (he)) = k;
		1114	}
		1115	#endif
		1116
764	/* towards the root */	1117	/* towards the root */
765	void inline_speed	1118	inline_speed void
766	upheap (WT *heap, int k)	1119	upheap (ANHE *heap, int k)
767	{	1120	{
768	WT w = heap [k];	1121	ANHE he = heap [k];
769		1122
770	for (;;)	1123	for (;;)
771	{	1124	{
772	int p = k >> 1;	1125	int p = HPARENT (k);
773		1126
774	/* maybe we could use a dummy element at heap [0]? */	1127	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
775	if (!p || heap [p]->at <= w->at)
776	break;	1128	break;
777		1129
778	heap [k] = heap [p];	1130	heap [k] = heap [p];
779	ev_active (heap [k]) = k;	1131	ev_active (ANHE_w (heap [k])) = k;
780	k = p;	1132	k = p;
781	}	1133	}
782		1134
783	heap [k] = w;	1135	heap [k] = he;
784	ev_active (heap [k]) = k;	1136	ev_active (ANHE_w (he)) = k;
785	}	1137	}
786		1138
787	/* away from the root */	1139	/* move an element suitably so it is in a correct place */
788	void inline_speed	1140	inline_size void
789	downheap (WT *heap, int N, int k)
790	{
791	WT w = heap [k];
792
793	for (;;)
794	{
795	int c = k << 1;
796
797	if (c > N)
798	break;
799
800	c += c < N && heap [c]->at > heap [c + 1]->at
801	? 1 : 0;
802
803	if (w->at <= heap [c]->at)
804	break;
805
806	heap [k] = heap [c];
807	ev_active (heap [k]) = k;
808
809	k = c;
810	}
811
812	heap [k] = w;
813	ev_active (heap [k]) = k;
814	}
815
816	void inline_size
817	adjustheap (WT *heap, int N, int k)	1141	adjustheap (ANHE *heap, int N, int k)
818	{	1142	{
		1143	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
819	upheap (heap, k);	1144	upheap (heap, k);
		1145	else
820	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);
821	}	1159	}
822		1160
823	/*****************************************************************************/	1161	/*****************************************************************************/
824		1162
		1163	/* associate signal watchers to a signal signal */
825	typedef struct	1164	typedef struct
826	{	1165	{
		1166	EV_ATOMIC_T pending;
		1167	#if EV_MULTIPLICITY
		1168	EV_P;
		1169	#endif
827	WL head;	1170	WL head;
828	EV_ATOMIC_T gotsig;
829	} ANSIG;	1171	} ANSIG;
830		1172
831	static ANSIG *signals;	1173	static ANSIG signals [EV_NSIG - 1];
832	static int signalmax;
833
834	static EV_ATOMIC_T gotsig;
835
836	void inline_size
837	signals_init (ANSIG *base, int count)
838	{
839	while (count--)
840	{
841	base->head = 0;
842	base->gotsig = 0;
843
844	++base;
845	}
846	}
847		1174
848	/*****************************************************************************/	1175	/*****************************************************************************/
849		1176
850	void inline_speed	1177	/* used to prepare libev internal fd's */
		1178	/* this is not fork-safe */
		1179	inline_speed void
851	fd_intern (int fd)	1180	fd_intern (int fd)
852	{	1181	{
853	#ifdef _WIN32	1182	#ifdef _WIN32
854	int arg = 1;	1183	unsigned long arg = 1;
855	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1184	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
856	#else	1185	#else
857	fcntl (fd, F_SETFD, FD_CLOEXEC);	1186	fcntl (fd, F_SETFD, FD_CLOEXEC);
858	fcntl (fd, F_SETFL, O_NONBLOCK);	1187	fcntl (fd, F_SETFL, O_NONBLOCK);
859	#endif	1188	#endif
860	}	1189	}
861		1190
862	static void noinline	1191	static void noinline
863	evpipe_init (EV_P)	1192	evpipe_init (EV_P)
864	{	1193	{
865	if (!ev_is_active (&pipeev))	1194	if (!ev_is_active (&pipe_w))
866	{	1195	{
867	#if EV_USE_EVENTFD	1196	#if EV_USE_EVENTFD
		1197	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1198	if (evfd < 0 && errno == EINVAL)
868	if ((evfd = eventfd (0, 0)) >= 0)	1199	evfd = eventfd (0, 0);
		1200
		1201	if (evfd >= 0)
869	{	1202	{
870	evpipe [0] = -1;	1203	evpipe [0] = -1;
871	fd_intern (evfd);	1204	fd_intern (evfd); /* doing it twice doesn't hurt */
872	ev_io_set (&pipeev, evfd, EV_READ);	1205	ev_io_set (&pipe_w, evfd, EV_READ);
873	}	1206	}
874	else	1207	else
875	#endif	1208	#endif
876	{	1209	{
877	while (pipe (evpipe))	1210	while (pipe (evpipe))
878	syserr ("(libev) error creating signal/async pipe");	1211	ev_syserr ("(libev) error creating signal/async pipe");
879		1212
880	fd_intern (evpipe [0]);	1213	fd_intern (evpipe [0]);
881	fd_intern (evpipe [1]);	1214	fd_intern (evpipe [1]);
882	ev_io_set (&pipeev, evpipe [0], EV_READ);	1215	ev_io_set (&pipe_w, evpipe [0], EV_READ);
883	}	1216	}
884		1217
885	ev_io_start (EV_A_ &pipeev);	1218	ev_io_start (EV_A_ &pipe_w);
886	ev_unref (EV_A); /* watcher should not keep loop alive */	1219	ev_unref (EV_A); /* watcher should not keep loop alive */
887	}	1220	}
888	}	1221	}
889		1222
890	void inline_size	1223	inline_size void
891	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1224	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
892	{	1225	{
893	if (!*flag)	1226	if (!*flag)
894	{	1227	{
895	int old_errno = errno; /* save errno because write might clobber it */	1228	int old_errno = errno; /* save errno because write might clobber it */
…		…
908		1241
909	errno = old_errno;	1242	errno = old_errno;
910	}	1243	}
911	}	1244	}
912		1245
		1246	/* called whenever the libev signal pipe */
		1247	/* got some events (signal, async) */
913	static void	1248	static void
914	pipecb (EV_P_ ev_io *iow, int revents)	1249	pipecb (EV_P_ ev_io *iow, int revents)
915	{	1250	{
		1251	int i;
		1252
916	#if EV_USE_EVENTFD	1253	#if EV_USE_EVENTFD
917	if (evfd >= 0)	1254	if (evfd >= 0)
918	{	1255	{
919	uint64_t counter;	1256	uint64_t counter;
920	read (evfd, &counter, sizeof (uint64_t));	1257	read (evfd, &counter, sizeof (uint64_t));
…		…
924	{	1261	{
925	char dummy;	1262	char dummy;
926	read (evpipe [0], &dummy, 1);	1263	read (evpipe [0], &dummy, 1);
927	}	1264	}
928		1265
929	if (gotsig && ev_is_default_loop (EV_A))	1266	if (sig_pending)
930	{	1267	{
931	int signum;	1268	sig_pending = 0;
932	gotsig = 0;
933		1269
934	for (signum = signalmax; signum--; )	1270	for (i = EV_NSIG - 1; i--; )
935	if (signals [signum].gotsig)	1271	if (expect_false (signals [i].pending))
936	ev_feed_signal_event (EV_A_ signum + 1);	1272	ev_feed_signal_event (EV_A_ i + 1);
937	}	1273	}
938		1274
939	#if EV_ASYNC_ENABLE	1275	#if EV_ASYNC_ENABLE
940	if (gotasync)	1276	if (async_pending)
941	{	1277	{
942	int i;	1278	async_pending = 0;
943	gotasync = 0;
944		1279
945	for (i = asynccnt; i--; )	1280	for (i = asynccnt; i--; )
946	if (asyncs [i]->sent)	1281	if (asyncs [i]->sent)
947	{	1282	{
948	asyncs [i]->sent = 0;	1283	asyncs [i]->sent = 0;
…		…
956		1291
957	static void	1292	static void
958	ev_sighandler (int signum)	1293	ev_sighandler (int signum)
959	{	1294	{
960	#if EV_MULTIPLICITY	1295	#if EV_MULTIPLICITY
961	struct ev_loop *loop = &default_loop_struct;	1296	EV_P = signals [signum - 1].loop;
962	#endif	1297	#endif
963		1298
964	#if _WIN32	1299	#ifdef _WIN32
965	signal (signum, ev_sighandler);	1300	signal (signum, ev_sighandler);
966	#endif	1301	#endif
967		1302
968	signals [signum - 1].gotsig = 1;	1303	signals [signum - 1].pending = 1;
969	evpipe_write (EV_A_ &gotsig);	1304	evpipe_write (EV_A_ &sig_pending);
970	}	1305	}
971		1306
972	void noinline	1307	void noinline
973	ev_feed_signal_event (EV_P_ int signum)	1308	ev_feed_signal_event (EV_P_ int signum)
974	{	1309	{
975	WL w;	1310	WL w;
976		1311
		1312	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1313	return;
		1314
		1315	--signum;
		1316
977	#if EV_MULTIPLICITY	1317	#if EV_MULTIPLICITY
978	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 */
979	#endif	1319	/* or, likely more useful, feeding a signal nobody is waiting for */
980		1320
981	--signum;	1321	if (expect_false (signals [signum].loop != EV_A))
982
983	if (signum < 0 || signum >= signalmax)
984	return;	1322	return;
		1323	#endif
985		1324
986	signals [signum].gotsig = 0;	1325	signals [signum].pending = 0;
987		1326
988	for (w = signals [signum].head; w; w = w->next)	1327	for (w = signals [signum].head; w; w = w->next)
989	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1328	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
990	}	1329	}
991		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
992	/*****************************************************************************/	1351	/*****************************************************************************/
993		1352
994	static WL childs [EV_PID_HASHSIZE];	1353	static WL childs [EV_PID_HASHSIZE];
995		1354
996	#ifndef _WIN32	1355	#ifndef _WIN32
…		…
999		1358
1000	#ifndef WIFCONTINUED	1359	#ifndef WIFCONTINUED
1001	# define WIFCONTINUED(status) 0	1360	# define WIFCONTINUED(status) 0
1002	#endif	1361	#endif
1003		1362
1004	void inline_speed	1363	/* handle a single child status event */
		1364	inline_speed void
1005	child_reap (EV_P_ int chain, int pid, int status)	1365	child_reap (EV_P_ int chain, int pid, int status)
1006	{	1366	{
1007	ev_child *w;	1367	ev_child *w;
1008	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1368	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1009		1369
…		…
1022		1382
1023	#ifndef WCONTINUED	1383	#ifndef WCONTINUED
1024	# define WCONTINUED 0	1384	# define WCONTINUED 0
1025	#endif	1385	#endif
1026		1386
		1387	/* called on sigchld etc., calls waitpid */
1027	static void	1388	static void
1028	childcb (EV_P_ ev_signal *sw, int revents)	1389	childcb (EV_P_ ev_signal *sw, int revents)
1029	{	1390	{
1030	int pid, status;	1391	int pid, status;
1031		1392
…		…
1112	/* kqueue is borked on everything but netbsd apparently */	1473	/* kqueue is borked on everything but netbsd apparently */
1113	/* 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 */
1114	flags &= ~EVBACKEND_KQUEUE;	1475	flags &= ~EVBACKEND_KQUEUE;
1115	#endif	1476	#endif
1116	#ifdef __APPLE__	1477	#ifdef __APPLE__
1117	// flags &= ~EVBACKEND_KQUEUE; for documentation	1478	/* only select works correctly on that "unix-certified" platform */
1118	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 */
1119	#endif	1481	#endif
1120		1482
1121	return flags;	1483	return flags;
1122	}	1484	}
1123		1485
…		…
1137	ev_backend (EV_P)	1499	ev_backend (EV_P)
1138	{	1500	{
1139	return backend;	1501	return backend;
1140	}	1502	}
1141		1503
		1504	#if EV_MINIMAL < 2
1142	unsigned int	1505	unsigned int
1143	ev_loop_count (EV_P)	1506	ev_loop_count (EV_P)
1144	{	1507	{
1145	return loop_count;	1508	return loop_count;
1146	}	1509	}
1147		1510
		1511	unsigned int
		1512	ev_loop_depth (EV_P)
		1513	{
		1514	return loop_depth;
		1515	}
		1516
1148	void	1517	void
1149	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1518	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1150	{	1519	{
1151	io_blocktime = interval;	1520	io_blocktime = interval;
1152	}	1521	}
…		…
1155	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1524	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1156	{	1525	{
1157	timeout_blocktime = interval;	1526	timeout_blocktime = interval;
1158	}	1527	}
1159		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 */
1160	static void noinline	1554	static void noinline
1161	loop_init (EV_P_ unsigned int flags)	1555	loop_init (EV_P_ unsigned int flags)
1162	{	1556	{
1163	if (!backend)	1557	if (!backend)
1164	{	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
1165	#if EV_USE_MONOTONIC	1569	#if EV_USE_MONOTONIC
		1570	if (!have_monotonic)
1166	{	1571	{
1167	struct timespec ts;	1572	struct timespec ts;
		1573
1168	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1574	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1169	have_monotonic = 1;	1575	have_monotonic = 1;
1170	}	1576	}
1171	#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"));
1172		1589
1173	ev_rt_now = ev_time ();	1590	ev_rt_now = ev_time ();
1174	mn_now = get_clock ();	1591	mn_now = get_clock ();
1175	now_floor = mn_now;	1592	now_floor = mn_now;
1176	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
1177		1597
1178	io_blocktime = 0.;	1598	io_blocktime = 0.;
1179	timeout_blocktime = 0.;	1599	timeout_blocktime = 0.;
1180	backend = 0;	1600	backend = 0;
1181	backend_fd = -1;	1601	backend_fd = -1;
1182	gotasync = 0;	1602	sig_pending = 0;
		1603	#if EV_ASYNC_ENABLE
		1604	async_pending = 0;
		1605	#endif
1183	#if EV_USE_INOTIFY	1606	#if EV_USE_INOTIFY
1184	fs_fd = -2;	1607	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1185	#endif	1608	#endif
1186		1609	#if EV_USE_SIGNALFD
1187	/* pid check not overridable via env */	1610	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1188	#ifndef _WIN32
1189	if (flags & EVFLAG_FORKCHECK)
1190	curpid = getpid ();
1191	#endif	1611	#endif
1192
1193	if (!(flags & EVFLAG_NOENV)
1194	&& !enable_secure ()
1195	&& getenv ("LIBEV_FLAGS"))
1196	flags = atoi (getenv ("LIBEV_FLAGS"));
1197		1612
1198	if (!(flags & 0x0000ffffU))	1613	if (!(flags & 0x0000ffffU))
1199	flags |= ev_recommended_backends ();	1614	flags |= ev_recommended_backends ();
1200		1615
1201	#if EV_USE_PORT	1616	#if EV_USE_PORT
…		…
1212	#endif	1627	#endif
1213	#if EV_USE_SELECT	1628	#if EV_USE_SELECT
1214	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1629	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1215	#endif	1630	#endif
1216		1631
		1632	ev_prepare_init (&pending_w, pendingcb);
		1633
1217	ev_init (&pipeev, pipecb);	1634	ev_init (&pipe_w, pipecb);
1218	ev_set_priority (&pipeev, EV_MAXPRI);	1635	ev_set_priority (&pipe_w, EV_MAXPRI);
1219	}	1636	}
1220	}	1637	}
1221		1638
		1639	/* free up a loop structure */
1222	static void noinline	1640	static void noinline
1223	loop_destroy (EV_P)	1641	loop_destroy (EV_P)
1224	{	1642	{
1225	int i;	1643	int i;
1226		1644
1227	if (ev_is_active (&pipeev))	1645	if (ev_is_active (&pipe_w))
1228	{	1646	{
1229	ev_ref (EV_A); /* signal watcher */	1647	/*ev_ref (EV_A);*/
1230	ev_io_stop (EV_A_ &pipeev);	1648	/*ev_io_stop (EV_A_ &pipe_w);*/
1231		1649
1232	#if EV_USE_EVENTFD	1650	#if EV_USE_EVENTFD
1233	if (evfd >= 0)	1651	if (evfd >= 0)
1234	close (evfd);	1652	close (evfd);
1235	#endif	1653	#endif
1236		1654
1237	if (evpipe [0] >= 0)	1655	if (evpipe [0] >= 0)
1238	{	1656	{
1239	close (evpipe [0]);	1657	EV_WIN32_CLOSE_FD (evpipe [0]);
1240	close (evpipe [1]);	1658	EV_WIN32_CLOSE_FD (evpipe [1]);
1241	}	1659	}
1242	}	1660	}
		1661
		1662	#if EV_USE_SIGNALFD
		1663	if (ev_is_active (&sigfd_w))
		1664	close (sigfd);
		1665	#endif
1243		1666
1244	#if EV_USE_INOTIFY	1667	#if EV_USE_INOTIFY
1245	if (fs_fd >= 0)	1668	if (fs_fd >= 0)
1246	close (fs_fd);	1669	close (fs_fd);
1247	#endif	1670	#endif
…		…
1271	#if EV_IDLE_ENABLE	1694	#if EV_IDLE_ENABLE
1272	array_free (idle, [i]);	1695	array_free (idle, [i]);
1273	#endif	1696	#endif
1274	}	1697	}
1275		1698
1276	ev_free (anfds); anfdmax = 0;	1699	ev_free (anfds); anfds = 0; anfdmax = 0;
1277		1700
1278	/* have to use the microsoft-never-gets-it-right macro */	1701	/* have to use the microsoft-never-gets-it-right macro */
		1702	array_free (rfeed, EMPTY);
1279	array_free (fdchange, EMPTY);	1703	array_free (fdchange, EMPTY);
1280	array_free (timer, EMPTY);	1704	array_free (timer, EMPTY);
1281	#if EV_PERIODIC_ENABLE	1705	#if EV_PERIODIC_ENABLE
1282	array_free (periodic, EMPTY);	1706	array_free (periodic, EMPTY);
1283	#endif	1707	#endif
…		…
1292		1716
1293	backend = 0;	1717	backend = 0;
1294	}	1718	}
1295		1719
1296	#if EV_USE_INOTIFY	1720	#if EV_USE_INOTIFY
1297	void inline_size infy_fork (EV_P);	1721	inline_size void infy_fork (EV_P);
1298	#endif	1722	#endif
1299		1723
1300	void inline_size	1724	inline_size void
1301	loop_fork (EV_P)	1725	loop_fork (EV_P)
1302	{	1726	{
1303	#if EV_USE_PORT	1727	#if EV_USE_PORT
1304	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1728	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1305	#endif	1729	#endif
…		…
1311	#endif	1735	#endif
1312	#if EV_USE_INOTIFY	1736	#if EV_USE_INOTIFY
1313	infy_fork (EV_A);	1737	infy_fork (EV_A);
1314	#endif	1738	#endif
1315		1739
1316	if (ev_is_active (&pipeev))	1740	if (ev_is_active (&pipe_w))
1317	{	1741	{
1318	/* this "locks" the handlers against writing to the pipe */	1742	/* this "locks" the handlers against writing to the pipe */
1319	/* while we modify the fd vars */	1743	/* while we modify the fd vars */
1320	gotsig = 1;	1744	sig_pending = 1;
1321	#if EV_ASYNC_ENABLE	1745	#if EV_ASYNC_ENABLE
1322	gotasync = 1;	1746	async_pending = 1;
1323	#endif	1747	#endif
1324		1748
1325	ev_ref (EV_A);	1749	ev_ref (EV_A);
1326	ev_io_stop (EV_A_ &pipeev);	1750	ev_io_stop (EV_A_ &pipe_w);
1327		1751
1328	#if EV_USE_EVENTFD	1752	#if EV_USE_EVENTFD
1329	if (evfd >= 0)	1753	if (evfd >= 0)
1330	close (evfd);	1754	close (evfd);
1331	#endif	1755	#endif
1332		1756
1333	if (evpipe [0] >= 0)	1757	if (evpipe [0] >= 0)
1334	{	1758	{
1335	close (evpipe [0]);	1759	EV_WIN32_CLOSE_FD (evpipe [0]);
1336	close (evpipe [1]);	1760	EV_WIN32_CLOSE_FD (evpipe [1]);
1337	}	1761	}
1338		1762
1339	evpipe_init (EV_A);	1763	evpipe_init (EV_A);
1340	/* now iterate over everything, in case we missed something */	1764	/* now iterate over everything, in case we missed something */
1341	pipecb (EV_A_ &pipeev, EV_READ);	1765	pipecb (EV_A_ &pipe_w, EV_READ);
1342	}	1766	}
1343		1767
1344	postfork = 0;	1768	postfork = 0;
1345	}	1769	}
1346		1770
1347	#if EV_MULTIPLICITY	1771	#if EV_MULTIPLICITY
		1772
1348	struct ev_loop *	1773	struct ev_loop *
1349	ev_loop_new (unsigned int flags)	1774	ev_loop_new (unsigned int flags)
1350	{	1775	{
1351	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1776	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1352		1777
1353	memset (loop, 0, sizeof (struct ev_loop));	1778	memset (EV_A, 0, sizeof (struct ev_loop));
1354
1355	loop_init (EV_A_ flags);	1779	loop_init (EV_A_ flags);
1356		1780
1357	if (ev_backend (EV_A))	1781	if (ev_backend (EV_A))
1358	return loop;	1782	return EV_A;
1359		1783
1360	return 0;	1784	return 0;
1361	}	1785	}
1362		1786
1363	void	1787	void
…		…
1370	void	1794	void
1371	ev_loop_fork (EV_P)	1795	ev_loop_fork (EV_P)
1372	{	1796	{
1373	postfork = 1; /* must be in line with ev_default_fork */	1797	postfork = 1; /* must be in line with ev_default_fork */
1374	}	1798	}
		1799	#endif /* multiplicity */
1375		1800
		1801	#if EV_VERIFY
		1802	static void noinline
		1803	verify_watcher (EV_P_ W w)
		1804	{
		1805	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1806
		1807	if (w->pending)
		1808	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1809	}
		1810
		1811	static void noinline
		1812	verify_heap (EV_P_ ANHE *heap, int N)
		1813	{
		1814	int i;
		1815
		1816	for (i = HEAP0; i < N + HEAP0; ++i)
		1817	{
		1818	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1819	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1820	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1821
		1822	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1823	}
		1824	}
		1825
		1826	static void noinline
		1827	array_verify (EV_P_ W *ws, int cnt)
		1828	{
		1829	while (cnt--)
		1830	{
		1831	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1832	verify_watcher (EV_A_ ws [cnt]);
		1833	}
		1834	}
		1835	#endif
		1836
		1837	#if EV_MINIMAL < 2
		1838	void
		1839	ev_loop_verify (EV_P)
		1840	{
		1841	#if EV_VERIFY
		1842	int i;
		1843	WL w;
		1844
		1845	assert (activecnt >= -1);
		1846
		1847	assert (fdchangemax >= fdchangecnt);
		1848	for (i = 0; i < fdchangecnt; ++i)
		1849	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1850
		1851	assert (anfdmax >= 0);
		1852	for (i = 0; i < anfdmax; ++i)
		1853	for (w = anfds [i].head; w; w = w->next)
		1854	{
		1855	verify_watcher (EV_A_ (W)w);
		1856	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1857	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1858	}
		1859
		1860	assert (timermax >= timercnt);
		1861	verify_heap (EV_A_ timers, timercnt);
		1862
		1863	#if EV_PERIODIC_ENABLE
		1864	assert (periodicmax >= periodiccnt);
		1865	verify_heap (EV_A_ periodics, periodiccnt);
		1866	#endif
		1867
		1868	for (i = NUMPRI; i--; )
		1869	{
		1870	assert (pendingmax [i] >= pendingcnt [i]);
		1871	#if EV_IDLE_ENABLE
		1872	assert (idleall >= 0);
		1873	assert (idlemax [i] >= idlecnt [i]);
		1874	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1875	#endif
		1876	}
		1877
		1878	#if EV_FORK_ENABLE
		1879	assert (forkmax >= forkcnt);
		1880	array_verify (EV_A_ (W *)forks, forkcnt);
		1881	#endif
		1882
		1883	#if EV_ASYNC_ENABLE
		1884	assert (asyncmax >= asynccnt);
		1885	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1886	#endif
		1887
		1888	assert (preparemax >= preparecnt);
		1889	array_verify (EV_A_ (W *)prepares, preparecnt);
		1890
		1891	assert (checkmax >= checkcnt);
		1892	array_verify (EV_A_ (W *)checks, checkcnt);
		1893
		1894	# if 0
		1895	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1896	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		1897	# endif
		1898	#endif
		1899	}
1376	#endif	1900	#endif
1377		1901
1378	#if EV_MULTIPLICITY	1902	#if EV_MULTIPLICITY
1379	struct ev_loop *	1903	struct ev_loop *
1380	ev_default_loop_init (unsigned int flags)	1904	ev_default_loop_init (unsigned int flags)
…		…
1384	#endif	1908	#endif
1385	{	1909	{
1386	if (!ev_default_loop_ptr)	1910	if (!ev_default_loop_ptr)
1387	{	1911	{
1388	#if EV_MULTIPLICITY	1912	#if EV_MULTIPLICITY
1389	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1913	EV_P = ev_default_loop_ptr = &default_loop_struct;
1390	#else	1914	#else
1391	ev_default_loop_ptr = 1;	1915	ev_default_loop_ptr = 1;
1392	#endif	1916	#endif
1393		1917
1394	loop_init (EV_A_ flags);	1918	loop_init (EV_A_ flags);
…		…
1411		1935
1412	void	1936	void
1413	ev_default_destroy (void)	1937	ev_default_destroy (void)
1414	{	1938	{
1415	#if EV_MULTIPLICITY	1939	#if EV_MULTIPLICITY
1416	struct ev_loop *loop = ev_default_loop_ptr;	1940	EV_P = ev_default_loop_ptr;
1417	#endif	1941	#endif
		1942
		1943	ev_default_loop_ptr = 0;
1418		1944
1419	#ifndef _WIN32	1945	#ifndef _WIN32
1420	ev_ref (EV_A); /* child watcher */	1946	ev_ref (EV_A); /* child watcher */
1421	ev_signal_stop (EV_A_ &childev);	1947	ev_signal_stop (EV_A_ &childev);
1422	#endif	1948	#endif
…		…
1426		1952
1427	void	1953	void
1428	ev_default_fork (void)	1954	ev_default_fork (void)
1429	{	1955	{
1430	#if EV_MULTIPLICITY	1956	#if EV_MULTIPLICITY
1431	struct ev_loop *loop = ev_default_loop_ptr;	1957	EV_P = ev_default_loop_ptr;
1432	#endif	1958	#endif
1433		1959
1434	if (backend)
1435	postfork = 1; /* must be in line with ev_loop_fork */	1960	postfork = 1; /* must be in line with ev_loop_fork */
1436	}	1961	}
1437		1962
1438	/*****************************************************************************/	1963	/*****************************************************************************/
1439		1964
1440	void	1965	void
1441	ev_invoke (EV_P_ void *w, int revents)	1966	ev_invoke (EV_P_ void *w, int revents)
1442	{	1967	{
1443	EV_CB_INVOKE ((W)w, revents);	1968	EV_CB_INVOKE ((W)w, revents);
1444	}	1969	}
1445		1970
1446	void inline_speed	1971	unsigned int
1447	call_pending (EV_P)	1972	ev_pending_count (EV_P)
		1973	{
		1974	int pri;
		1975	unsigned int count = 0;
		1976
		1977	for (pri = NUMPRI; pri--; )
		1978	count += pendingcnt [pri];
		1979
		1980	return count;
		1981	}
		1982
		1983	void noinline
		1984	ev_invoke_pending (EV_P)
1448	{	1985	{
1449	int pri;	1986	int pri;
1450		1987
1451	for (pri = NUMPRI; pri--; )	1988	for (pri = NUMPRI; pri--; )
1452	while (pendingcnt [pri])	1989	while (pendingcnt [pri])
1453	{	1990	{
1454	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1991	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1455		1992
1456	if (expect_true (p->w))
1457	{
1458	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1993	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1994	/* ^ this is no longer true, as pending_w could be here */
1459		1995
1460	p->w->pending = 0;	1996	p->w->pending = 0;
1461	EV_CB_INVOKE (p->w, p->events);	1997	EV_CB_INVOKE (p->w, p->events);
1462	}	1998	EV_FREQUENT_CHECK;
1463	}	1999	}
1464	}	2000	}
1465		2001
1466	void inline_size
1467	timers_reify (EV_P)
1468	{
1469	while (timercnt && ev_at (timers [1]) <= mn_now)
1470	{
1471	ev_timer *w = (ev_timer *)timers [1];
1472
1473	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1474
1475	/* first reschedule or stop timer */
1476	if (w->repeat)
1477	{
1478	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1479
1480	ev_at (w) += w->repeat;
1481	if (ev_at (w) < mn_now)
1482	ev_at (w) = mn_now;
1483
1484	downheap (timers, timercnt, 1);
1485	}
1486	else
1487	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1488
1489	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1490	}
1491	}
1492
1493	#if EV_PERIODIC_ENABLE
1494	void inline_size
1495	periodics_reify (EV_P)
1496	{
1497	while (periodiccnt && ev_at (periodics [1]) <= ev_rt_now)
1498	{
1499	ev_periodic *w = (ev_periodic *)periodics [1];
1500
1501	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1502
1503	/* first reschedule or stop timer */
1504	if (w->reschedule_cb)
1505	{
1506	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1507	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
1508	downheap (periodics, periodiccnt, 1);
1509	}
1510	else if (w->interval)
1511	{
1512	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1513	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1514	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1515	downheap (periodics, periodiccnt, 1);
1516	}
1517	else
1518	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1519
1520	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1521	}
1522	}
1523
1524	static void noinline
1525	periodics_reschedule (EV_P)
1526	{
1527	int i;
1528
1529	/* adjust periodics after time jump */
1530	for (i = 1; i <= periodiccnt; ++i)
1531	{
1532	ev_periodic *w = (ev_periodic *)periodics [i];
1533
1534	if (w->reschedule_cb)
1535	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1536	else if (w->interval)
1537	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1538	}
1539
1540	/* now rebuild the heap */
1541	for (i = periodiccnt >> 1; i--; )
1542	downheap (periodics, periodiccnt, i);
1543	}
1544	#endif
1545
1546	#if EV_IDLE_ENABLE	2002	#if EV_IDLE_ENABLE
1547	void inline_size	2003	/* make idle watchers pending. this handles the "call-idle */
		2004	/* only when higher priorities are idle" logic */
		2005	inline_size void
1548	idle_reify (EV_P)	2006	idle_reify (EV_P)
1549	{	2007	{
1550	if (expect_false (idleall))	2008	if (expect_false (idleall))
1551	{	2009	{
1552	int pri;	2010	int pri;
…		…
1564	}	2022	}
1565	}	2023	}
1566	}	2024	}
1567	#endif	2025	#endif
1568		2026
1569	void inline_speed	2027	/* make timers pending */
		2028	inline_size void
		2029	timers_reify (EV_P)
		2030	{
		2031	EV_FREQUENT_CHECK;
		2032
		2033	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		2034	{
		2035	do
		2036	{
		2037	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2038
		2039	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2040
		2041	/* first reschedule or stop timer */
		2042	if (w->repeat)
		2043	{
		2044	ev_at (w) += w->repeat;
		2045	if (ev_at (w) < mn_now)
		2046	ev_at (w) = mn_now;
		2047
		2048	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		2049
		2050	ANHE_at_cache (timers [HEAP0]);
		2051	downheap (timers, timercnt, HEAP0);
		2052	}
		2053	else
		2054	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2055
		2056	EV_FREQUENT_CHECK;
		2057	feed_reverse (EV_A_ (W)w);
		2058	}
		2059	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
		2060
		2061	feed_reverse_done (EV_A_ EV_TIMEOUT);
		2062	}
		2063	}
		2064
		2065	#if EV_PERIODIC_ENABLE
		2066	/* make periodics pending */
		2067	inline_size void
		2068	periodics_reify (EV_P)
		2069	{
		2070	EV_FREQUENT_CHECK;
		2071
		2072	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		2073	{
		2074	int feed_count = 0;
		2075
		2076	do
		2077	{
		2078	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2079
		2080	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2081
		2082	/* first reschedule or stop timer */
		2083	if (w->reschedule_cb)
		2084	{
		2085	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2086
		2087	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		2088
		2089	ANHE_at_cache (periodics [HEAP0]);
		2090	downheap (periodics, periodiccnt, HEAP0);
		2091	}
		2092	else if (w->interval)
		2093	{
		2094	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2095	/* if next trigger time is not sufficiently in the future, put it there */
		2096	/* this might happen because of floating point inexactness */
		2097	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2098	{
		2099	ev_at (w) += w->interval;
		2100
		2101	/* if interval is unreasonably low we might still have a time in the past */
		2102	/* so correct this. this will make the periodic very inexact, but the user */
		2103	/* has effectively asked to get triggered more often than possible */
		2104	if (ev_at (w) < ev_rt_now)
		2105	ev_at (w) = ev_rt_now;
		2106	}
		2107
		2108	ANHE_at_cache (periodics [HEAP0]);
		2109	downheap (periodics, periodiccnt, HEAP0);
		2110	}
		2111	else
		2112	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2113
		2114	EV_FREQUENT_CHECK;
		2115	feed_reverse (EV_A_ (W)w);
		2116	}
		2117	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
		2118
		2119	feed_reverse_done (EV_A_ EV_PERIODIC);
		2120	}
		2121	}
		2122
		2123	/* simply recalculate all periodics */
		2124	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
		2125	static void noinline
		2126	periodics_reschedule (EV_P)
		2127	{
		2128	int i;
		2129
		2130	/* adjust periodics after time jump */
		2131	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		2132	{
		2133	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		2134
		2135	if (w->reschedule_cb)
		2136	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2137	else if (w->interval)
		2138	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2139
		2140	ANHE_at_cache (periodics [i]);
		2141	}
		2142
		2143	reheap (periodics, periodiccnt);
		2144	}
		2145	#endif
		2146
		2147	/* adjust all timers by a given offset */
		2148	static void noinline
		2149	timers_reschedule (EV_P_ ev_tstamp adjust)
		2150	{
		2151	int i;
		2152
		2153	for (i = 0; i < timercnt; ++i)
		2154	{
		2155	ANHE *he = timers + i + HEAP0;
		2156	ANHE_w (*he)->at += adjust;
		2157	ANHE_at_cache (*he);
		2158	}
		2159	}
		2160
		2161	/* fetch new monotonic and realtime times from the kernel */
		2162	/* also detetc if there was a timejump, and act accordingly */
		2163	inline_speed void
1570	time_update (EV_P_ ev_tstamp max_block)	2164	time_update (EV_P_ ev_tstamp max_block)
1571	{	2165	{
1572	int i;
1573
1574	#if EV_USE_MONOTONIC	2166	#if EV_USE_MONOTONIC
1575	if (expect_true (have_monotonic))	2167	if (expect_true (have_monotonic))
1576	{	2168	{
		2169	int i;
1577	ev_tstamp odiff = rtmn_diff;	2170	ev_tstamp odiff = rtmn_diff;
1578		2171
1579	mn_now = get_clock ();	2172	mn_now = get_clock ();
1580		2173
1581	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2174	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1599	*/	2192	*/
1600	for (i = 4; --i; )	2193	for (i = 4; --i; )
1601	{	2194	{
1602	rtmn_diff = ev_rt_now - mn_now;	2195	rtmn_diff = ev_rt_now - mn_now;
1603		2196
1604	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	2197	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1605	return; /* all is well */	2198	return; /* all is well */
1606		2199
1607	ev_rt_now = ev_time ();	2200	ev_rt_now = ev_time ();
1608	mn_now = get_clock ();	2201	mn_now = get_clock ();
1609	now_floor = mn_now;	2202	now_floor = mn_now;
1610	}	2203	}
1611		2204
		2205	/* no timer adjustment, as the monotonic clock doesn't jump */
		2206	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1612	# if EV_PERIODIC_ENABLE	2207	# if EV_PERIODIC_ENABLE
1613	periodics_reschedule (EV_A);	2208	periodics_reschedule (EV_A);
1614	# endif	2209	# endif
1615	/* no timer adjustment, as the monotonic clock doesn't jump */
1616	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1617	}	2210	}
1618	else	2211	else
1619	#endif	2212	#endif
1620	{	2213	{
1621	ev_rt_now = ev_time ();	2214	ev_rt_now = ev_time ();
1622		2215
1623	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2216	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1624	{	2217	{
		2218	/* adjust timers. this is easy, as the offset is the same for all of them */
		2219	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1625	#if EV_PERIODIC_ENABLE	2220	#if EV_PERIODIC_ENABLE
1626	periodics_reschedule (EV_A);	2221	periodics_reschedule (EV_A);
1627	#endif	2222	#endif
1628	/* adjust timers. this is easy, as the offset is the same for all of them */
1629	for (i = 1; i <= timercnt; ++i)
1630	ev_at (timers [i]) += ev_rt_now - mn_now;
1631	}	2223	}
1632		2224
1633	mn_now = ev_rt_now;	2225	mn_now = ev_rt_now;
1634	}	2226	}
1635	}	2227	}
1636		2228
1637	void	2229	void
1638	ev_ref (EV_P)
1639	{
1640	++activecnt;
1641	}
1642
1643	void
1644	ev_unref (EV_P)
1645	{
1646	--activecnt;
1647	}
1648
1649	static int loop_done;
1650
1651	void
1652	ev_loop (EV_P_ int flags)	2230	ev_loop (EV_P_ int flags)
1653	{	2231	{
		2232	#if EV_MINIMAL < 2
		2233	++loop_depth;
		2234	#endif
		2235
		2236	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2237
1654	loop_done = EVUNLOOP_CANCEL;	2238	loop_done = EVUNLOOP_CANCEL;
1655		2239
1656	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2240	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1657		2241
1658	do	2242	do
1659	{	2243	{
		2244	#if EV_VERIFY >= 2
		2245	ev_loop_verify (EV_A);
		2246	#endif
		2247
1660	#ifndef _WIN32	2248	#ifndef _WIN32
1661	if (expect_false (curpid)) /* penalise the forking check even more */	2249	if (expect_false (curpid)) /* penalise the forking check even more */
1662	if (expect_false (getpid () != curpid))	2250	if (expect_false (getpid () != curpid))
1663	{	2251	{
1664	curpid = getpid ();	2252	curpid = getpid ();
…		…
1670	/* we might have forked, so queue fork handlers */	2258	/* we might have forked, so queue fork handlers */
1671	if (expect_false (postfork))	2259	if (expect_false (postfork))
1672	if (forkcnt)	2260	if (forkcnt)
1673	{	2261	{
1674	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2262	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1675	call_pending (EV_A);	2263	EV_INVOKE_PENDING;
1676	}	2264	}
1677	#endif	2265	#endif
1678		2266
1679	/* queue prepare watchers (and execute them) */	2267	/* queue prepare watchers (and execute them) */
1680	if (expect_false (preparecnt))	2268	if (expect_false (preparecnt))
1681	{	2269	{
1682	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2270	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1683	call_pending (EV_A);	2271	EV_INVOKE_PENDING;
1684	}	2272	}
1685		2273
1686	if (expect_false (!activecnt))	2274	if (expect_false (loop_done))
1687	break;	2275	break;
1688		2276
1689	/* we might have forked, so reify kernel state if necessary */	2277	/* we might have forked, so reify kernel state if necessary */
1690	if (expect_false (postfork))	2278	if (expect_false (postfork))
1691	loop_fork (EV_A);	2279	loop_fork (EV_A);
…		…
1698	ev_tstamp waittime = 0.;	2286	ev_tstamp waittime = 0.;
1699	ev_tstamp sleeptime = 0.;	2287	ev_tstamp sleeptime = 0.;
1700		2288
1701	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2289	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1702	{	2290	{
		2291	/* remember old timestamp for io_blocktime calculation */
		2292	ev_tstamp prev_mn_now = mn_now;
		2293
1703	/* update time to cancel out callback processing overhead */	2294	/* update time to cancel out callback processing overhead */
1704	time_update (EV_A_ 1e100);	2295	time_update (EV_A_ 1e100);
1705		2296
1706	waittime = MAX_BLOCKTIME;	2297	waittime = MAX_BLOCKTIME;
1707		2298
1708	if (timercnt)	2299	if (timercnt)
1709	{	2300	{
1710	ev_tstamp to = ev_at (timers [1]) - mn_now + backend_fudge;	2301	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1711	if (waittime > to) waittime = to;	2302	if (waittime > to) waittime = to;
1712	}	2303	}
1713		2304
1714	#if EV_PERIODIC_ENABLE	2305	#if EV_PERIODIC_ENABLE
1715	if (periodiccnt)	2306	if (periodiccnt)
1716	{	2307	{
1717	ev_tstamp to = ev_at (periodics [1]) - ev_rt_now + backend_fudge;	2308	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1718	if (waittime > to) waittime = to;	2309	if (waittime > to) waittime = to;
1719	}	2310	}
1720	#endif	2311	#endif
1721		2312
		2313	/* don't let timeouts decrease the waittime below timeout_blocktime */
1722	if (expect_false (waittime < timeout_blocktime))	2314	if (expect_false (waittime < timeout_blocktime))
1723	waittime = timeout_blocktime;	2315	waittime = timeout_blocktime;
1724		2316
1725	sleeptime = waittime - backend_fudge;	2317	/* extra check because io_blocktime is commonly 0 */
1726
1727	if (expect_true (sleeptime > io_blocktime))	2318	if (expect_false (io_blocktime))
1728	sleeptime = io_blocktime;
1729
1730	if (sleeptime)
1731	{	2319	{
		2320	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2321
		2322	if (sleeptime > waittime - backend_fudge)
		2323	sleeptime = waittime - backend_fudge;
		2324
		2325	if (expect_true (sleeptime > 0.))
		2326	{
1732	ev_sleep (sleeptime);	2327	ev_sleep (sleeptime);
1733	waittime -= sleeptime;	2328	waittime -= sleeptime;
		2329	}
1734	}	2330	}
1735	}	2331	}
1736		2332
		2333	#if EV_MINIMAL < 2
1737	++loop_count;	2334	++loop_count;
		2335	#endif
		2336	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1738	backend_poll (EV_A_ waittime);	2337	backend_poll (EV_A_ waittime);
		2338	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1739		2339
1740	/* update ev_rt_now, do magic */	2340	/* update ev_rt_now, do magic */
1741	time_update (EV_A_ waittime + sleeptime);	2341	time_update (EV_A_ waittime + sleeptime);
1742	}	2342	}
1743		2343
…		…
1754		2354
1755	/* queue check watchers, to be executed first */	2355	/* queue check watchers, to be executed first */
1756	if (expect_false (checkcnt))	2356	if (expect_false (checkcnt))
1757	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2357	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1758		2358
1759	call_pending (EV_A);	2359	EV_INVOKE_PENDING;
1760	}	2360	}
1761	while (expect_true (	2361	while (expect_true (
1762	activecnt	2362	activecnt
1763	&& !loop_done	2363	&& !loop_done
1764	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2364	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1765	));	2365	));
1766		2366
1767	if (loop_done == EVUNLOOP_ONE)	2367	if (loop_done == EVUNLOOP_ONE)
1768	loop_done = EVUNLOOP_CANCEL;	2368	loop_done = EVUNLOOP_CANCEL;
		2369
		2370	#if EV_MINIMAL < 2
		2371	--loop_depth;
		2372	#endif
1769	}	2373	}
1770		2374
1771	void	2375	void
1772	ev_unloop (EV_P_ int how)	2376	ev_unloop (EV_P_ int how)
1773	{	2377	{
1774	loop_done = how;	2378	loop_done = how;
1775	}	2379	}
1776		2380
		2381	void
		2382	ev_ref (EV_P)
		2383	{
		2384	++activecnt;
		2385	}
		2386
		2387	void
		2388	ev_unref (EV_P)
		2389	{
		2390	--activecnt;
		2391	}
		2392
		2393	void
		2394	ev_now_update (EV_P)
		2395	{
		2396	time_update (EV_A_ 1e100);
		2397	}
		2398
		2399	void
		2400	ev_suspend (EV_P)
		2401	{
		2402	ev_now_update (EV_A);
		2403	}
		2404
		2405	void
		2406	ev_resume (EV_P)
		2407	{
		2408	ev_tstamp mn_prev = mn_now;
		2409
		2410	ev_now_update (EV_A);
		2411	timers_reschedule (EV_A_ mn_now - mn_prev);
		2412	#if EV_PERIODIC_ENABLE
		2413	/* TODO: really do this? */
		2414	periodics_reschedule (EV_A);
		2415	#endif
		2416	}
		2417
1777	/*****************************************************************************/	2418	/*****************************************************************************/
		2419	/* singly-linked list management, used when the expected list length is short */
1778		2420
1779	void inline_size	2421	inline_size void
1780	wlist_add (WL *head, WL elem)	2422	wlist_add (WL *head, WL elem)
1781	{	2423	{
1782	elem->next = *head;	2424	elem->next = *head;
1783	*head = elem;	2425	*head = elem;
1784	}	2426	}
1785		2427
1786	void inline_size	2428	inline_size void
1787	wlist_del (WL *head, WL elem)	2429	wlist_del (WL *head, WL elem)
1788	{	2430	{
1789	while (*head)	2431	while (*head)
1790	{	2432	{
1791	if (*head == elem)	2433	if (expect_true (*head == elem))
1792	{	2434	{
1793	*head = elem->next;	2435	*head = elem->next;
1794	return;	2436	break;
1795	}	2437	}
1796		2438
1797	head = &(*head)->next;	2439	head = &(*head)->next;
1798	}	2440	}
1799	}	2441	}
1800		2442
1801	void inline_speed	2443	/* internal, faster, version of ev_clear_pending */
		2444	inline_speed void
1802	clear_pending (EV_P_ W w)	2445	clear_pending (EV_P_ W w)
1803	{	2446	{
1804	if (w->pending)	2447	if (w->pending)
1805	{	2448	{
1806	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2449	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1807	w->pending = 0;	2450	w->pending = 0;
1808	}	2451	}
1809	}	2452	}
1810		2453
1811	int	2454	int
…		…
1815	int pending = w_->pending;	2458	int pending = w_->pending;
1816		2459
1817	if (expect_true (pending))	2460	if (expect_true (pending))
1818	{	2461	{
1819	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2462	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2463	p->w = (W)&pending_w;
1820	w_->pending = 0;	2464	w_->pending = 0;
1821	p->w = 0;
1822	return p->events;	2465	return p->events;
1823	}	2466	}
1824	else	2467	else
1825	return 0;	2468	return 0;
1826	}	2469	}
1827		2470
1828	void inline_size	2471	inline_size void
1829	pri_adjust (EV_P_ W w)	2472	pri_adjust (EV_P_ W w)
1830	{	2473	{
1831	int pri = w->priority;	2474	int pri = ev_priority (w);
1832	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2475	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1833	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2476	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1834	w->priority = pri;	2477	ev_set_priority (w, pri);
1835	}	2478	}
1836		2479
1837	void inline_speed	2480	inline_speed void
1838	ev_start (EV_P_ W w, int active)	2481	ev_start (EV_P_ W w, int active)
1839	{	2482	{
1840	pri_adjust (EV_A_ w);	2483	pri_adjust (EV_A_ w);
1841	w->active = active;	2484	w->active = active;
1842	ev_ref (EV_A);	2485	ev_ref (EV_A);
1843	}	2486	}
1844		2487
1845	void inline_size	2488	inline_size void
1846	ev_stop (EV_P_ W w)	2489	ev_stop (EV_P_ W w)
1847	{	2490	{
1848	ev_unref (EV_A);	2491	ev_unref (EV_A);
1849	w->active = 0;	2492	w->active = 0;
1850	}	2493	}
…		…
1857	int fd = w->fd;	2500	int fd = w->fd;
1858		2501
1859	if (expect_false (ev_is_active (w)))	2502	if (expect_false (ev_is_active (w)))
1860	return;	2503	return;
1861		2504
1862	assert (("ev_io_start called with negative fd", fd >= 0));	2505	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2506	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2507
		2508	EV_FREQUENT_CHECK;
1863		2509
1864	ev_start (EV_A_ (W)w, 1);	2510	ev_start (EV_A_ (W)w, 1);
1865	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2511	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1866	wlist_add (&anfds[fd].head, (WL)w);	2512	wlist_add (&anfds[fd].head, (WL)w);
1867		2513
1868	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2514	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1869	w->events &= ~EV_IOFDSET;	2515	w->events &= ~EV__IOFDSET;
		2516
		2517	EV_FREQUENT_CHECK;
1870	}	2518	}
1871		2519
1872	void noinline	2520	void noinline
1873	ev_io_stop (EV_P_ ev_io *w)	2521	ev_io_stop (EV_P_ ev_io *w)
1874	{	2522	{
1875	clear_pending (EV_A_ (W)w);	2523	clear_pending (EV_A_ (W)w);
1876	if (expect_false (!ev_is_active (w)))	2524	if (expect_false (!ev_is_active (w)))
1877	return;	2525	return;
1878		2526
1879	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2527	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2528
		2529	EV_FREQUENT_CHECK;
1880		2530
1881	wlist_del (&anfds[w->fd].head, (WL)w);	2531	wlist_del (&anfds[w->fd].head, (WL)w);
1882	ev_stop (EV_A_ (W)w);	2532	ev_stop (EV_A_ (W)w);
1883		2533
1884	fd_change (EV_A_ w->fd, 1);	2534	fd_change (EV_A_ w->fd, 1);
		2535
		2536	EV_FREQUENT_CHECK;
1885	}	2537	}
1886		2538
1887	void noinline	2539	void noinline
1888	ev_timer_start (EV_P_ ev_timer *w)	2540	ev_timer_start (EV_P_ ev_timer *w)
1889	{	2541	{
1890	if (expect_false (ev_is_active (w)))	2542	if (expect_false (ev_is_active (w)))
1891	return;	2543	return;
1892		2544
1893	ev_at (w) += mn_now;	2545	ev_at (w) += mn_now;
1894		2546
1895	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2547	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1896		2548
		2549	EV_FREQUENT_CHECK;
		2550
		2551	++timercnt;
1897	ev_start (EV_A_ (W)w, ++timercnt);	2552	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1898	array_needsize (WT, timers, timermax, timercnt + 1, EMPTY2);	2553	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1899	timers [timercnt] = (WT)w;	2554	ANHE_w (timers [ev_active (w)]) = (WT)w;
		2555	ANHE_at_cache (timers [ev_active (w)]);
1900	upheap (timers, timercnt);	2556	upheap (timers, ev_active (w));
1901		2557
		2558	EV_FREQUENT_CHECK;
		2559
1902	/*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/	2560	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1903	}	2561	}
1904		2562
1905	void noinline	2563	void noinline
1906	ev_timer_stop (EV_P_ ev_timer *w)	2564	ev_timer_stop (EV_P_ ev_timer *w)
1907	{	2565	{
1908	clear_pending (EV_A_ (W)w);	2566	clear_pending (EV_A_ (W)w);
1909	if (expect_false (!ev_is_active (w)))	2567	if (expect_false (!ev_is_active (w)))
1910	return;	2568	return;
1911		2569
		2570	EV_FREQUENT_CHECK;
		2571
1912	{	2572	{
1913	int active = ev_active (w);	2573	int active = ev_active (w);
1914		2574
1915	assert (("internal timer heap corruption", timers [active] == (WT)w));	2575	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1916		2576
		2577	--timercnt;
		2578
1917	if (expect_true (active < timercnt))	2579	if (expect_true (active < timercnt + HEAP0))
1918	{	2580	{
1919	timers [active] = timers [timercnt];	2581	timers [active] = timers [timercnt + HEAP0];
1920	adjustheap (timers, timercnt, active);	2582	adjustheap (timers, timercnt, active);
1921	}	2583	}
1922
1923	--timercnt;
1924	}	2584	}
		2585
		2586	EV_FREQUENT_CHECK;
1925		2587
1926	ev_at (w) -= mn_now;	2588	ev_at (w) -= mn_now;
1927		2589
1928	ev_stop (EV_A_ (W)w);	2590	ev_stop (EV_A_ (W)w);
1929	}	2591	}
1930		2592
1931	void noinline	2593	void noinline
1932	ev_timer_again (EV_P_ ev_timer *w)	2594	ev_timer_again (EV_P_ ev_timer *w)
1933	{	2595	{
		2596	EV_FREQUENT_CHECK;
		2597
1934	if (ev_is_active (w))	2598	if (ev_is_active (w))
1935	{	2599	{
1936	if (w->repeat)	2600	if (w->repeat)
1937	{	2601	{
1938	ev_at (w) = mn_now + w->repeat;	2602	ev_at (w) = mn_now + w->repeat;
		2603	ANHE_at_cache (timers [ev_active (w)]);
1939	adjustheap (timers, timercnt, ev_active (w));	2604	adjustheap (timers, timercnt, ev_active (w));
1940	}	2605	}
1941	else	2606	else
1942	ev_timer_stop (EV_A_ w);	2607	ev_timer_stop (EV_A_ w);
1943	}	2608	}
1944	else if (w->repeat)	2609	else if (w->repeat)
1945	{	2610	{
1946	ev_at (w) = w->repeat;	2611	ev_at (w) = w->repeat;
1947	ev_timer_start (EV_A_ w);	2612	ev_timer_start (EV_A_ w);
1948	}	2613	}
		2614
		2615	EV_FREQUENT_CHECK;
		2616	}
		2617
		2618	ev_tstamp
		2619	ev_timer_remaining (EV_P_ ev_timer *w)
		2620	{
		2621	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1949	}	2622	}
1950		2623
1951	#if EV_PERIODIC_ENABLE	2624	#if EV_PERIODIC_ENABLE
1952	void noinline	2625	void noinline
1953	ev_periodic_start (EV_P_ ev_periodic *w)	2626	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
1957		2630
1958	if (w->reschedule_cb)	2631	if (w->reschedule_cb)
1959	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2632	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1960	else if (w->interval)	2633	else if (w->interval)
1961	{	2634	{
1962	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2635	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1963	/* this formula differs from the one in periodic_reify because we do not always round up */	2636	/* this formula differs from the one in periodic_reify because we do not always round up */
1964	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2637	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1965	}	2638	}
1966	else	2639	else
1967	ev_at (w) = w->offset;	2640	ev_at (w) = w->offset;
1968		2641
		2642	EV_FREQUENT_CHECK;
		2643
		2644	++periodiccnt;
1969	ev_start (EV_A_ (W)w, ++periodiccnt);	2645	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1970	array_needsize (WT, periodics, periodicmax, periodiccnt + 1, EMPTY2);	2646	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1971	periodics [periodiccnt] = (WT)w;	2647	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1972	upheap (periodics, periodiccnt);	2648	ANHE_at_cache (periodics [ev_active (w)]);
		2649	upheap (periodics, ev_active (w));
1973		2650
		2651	EV_FREQUENT_CHECK;
		2652
1974	/*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/	2653	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1975	}	2654	}
1976		2655
1977	void noinline	2656	void noinline
1978	ev_periodic_stop (EV_P_ ev_periodic *w)	2657	ev_periodic_stop (EV_P_ ev_periodic *w)
1979	{	2658	{
1980	clear_pending (EV_A_ (W)w);	2659	clear_pending (EV_A_ (W)w);
1981	if (expect_false (!ev_is_active (w)))	2660	if (expect_false (!ev_is_active (w)))
1982	return;	2661	return;
1983		2662
		2663	EV_FREQUENT_CHECK;
		2664
1984	{	2665	{
1985	int active = ev_active (w);	2666	int active = ev_active (w);
1986		2667
1987	assert (("internal periodic heap corruption", periodics [active] == (WT)w));	2668	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1988		2669
		2670	--periodiccnt;
		2671
1989	if (expect_true (active < periodiccnt))	2672	if (expect_true (active < periodiccnt + HEAP0))
1990	{	2673	{
1991	periodics [active] = periodics [periodiccnt];	2674	periodics [active] = periodics [periodiccnt + HEAP0];
1992	adjustheap (periodics, periodiccnt, active);	2675	adjustheap (periodics, periodiccnt, active);
1993	}	2676	}
1994
1995	--periodiccnt;
1996	}	2677	}
		2678
		2679	EV_FREQUENT_CHECK;
1997		2680
1998	ev_stop (EV_A_ (W)w);	2681	ev_stop (EV_A_ (W)w);
1999	}	2682	}
2000		2683
2001	void noinline	2684	void noinline
…		…
2012	#endif	2695	#endif
2013		2696
2014	void noinline	2697	void noinline
2015	ev_signal_start (EV_P_ ev_signal *w)	2698	ev_signal_start (EV_P_ ev_signal *w)
2016	{	2699	{
2017	#if EV_MULTIPLICITY
2018	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2019	#endif
2020	if (expect_false (ev_is_active (w)))	2700	if (expect_false (ev_is_active (w)))
2021	return;	2701	return;
2022		2702
2023	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2703	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2024		2704
2025	evpipe_init (EV_A);	2705	#if EV_MULTIPLICITY
		2706	assert (("libev: a signal must not be attached to two different loops",
		2707	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2026		2708
		2709	signals [w->signum - 1].loop = EV_A;
		2710	#endif
		2711
		2712	EV_FREQUENT_CHECK;
		2713
		2714	#if EV_USE_SIGNALFD
		2715	if (sigfd == -2)
2027	{	2716	{
2028	#ifndef _WIN32	2717	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2029	sigset_t full, prev;	2718	if (sigfd < 0 && errno == EINVAL)
2030	sigfillset (&full);	2719	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2031	sigprocmask (SIG_SETMASK, &full, &prev);
2032	#endif
2033		2720
2034	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2721	if (sigfd >= 0)
		2722	{
		2723	fd_intern (sigfd); /* doing it twice will not hurt */
2035		2724
2036	#ifndef _WIN32	2725	sigemptyset (&sigfd_set);
2037	sigprocmask (SIG_SETMASK, &prev, 0);	2726
2038	#endif	2727	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2728	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2729	ev_io_start (EV_A_ &sigfd_w);
		2730	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2731	}
2039	}	2732	}
		2733
		2734	if (sigfd >= 0)
		2735	{
		2736	/* TODO: check .head */
		2737	sigaddset (&sigfd_set, w->signum);
		2738	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2739
		2740	signalfd (sigfd, &sigfd_set, 0);
		2741	}
		2742	#endif
2040		2743
2041	ev_start (EV_A_ (W)w, 1);	2744	ev_start (EV_A_ (W)w, 1);
2042	wlist_add (&signals [w->signum - 1].head, (WL)w);	2745	wlist_add (&signals [w->signum - 1].head, (WL)w);
2043		2746
2044	if (!((WL)w)->next)	2747	if (!((WL)w)->next)
		2748	# if EV_USE_SIGNALFD
		2749	if (sigfd < 0) /*TODO*/
		2750	# endif
2045	{	2751	{
2046	#if _WIN32	2752	# ifdef _WIN32
		2753	evpipe_init (EV_A);
		2754
2047	signal (w->signum, ev_sighandler);	2755	signal (w->signum, ev_sighandler);
2048	#else	2756	# else
2049	struct sigaction sa;	2757	struct sigaction sa;
		2758
		2759	evpipe_init (EV_A);
		2760
2050	sa.sa_handler = ev_sighandler;	2761	sa.sa_handler = ev_sighandler;
2051	sigfillset (&sa.sa_mask);	2762	sigfillset (&sa.sa_mask);
2052	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2763	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2053	sigaction (w->signum, &sa, 0);	2764	sigaction (w->signum, &sa, 0);
		2765
		2766	sigemptyset (&sa.sa_mask);
		2767	sigaddset (&sa.sa_mask, w->signum);
		2768	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2054	#endif	2769	#endif
2055	}	2770	}
		2771
		2772	EV_FREQUENT_CHECK;
2056	}	2773	}
2057		2774
2058	void noinline	2775	void noinline
2059	ev_signal_stop (EV_P_ ev_signal *w)	2776	ev_signal_stop (EV_P_ ev_signal *w)
2060	{	2777	{
2061	clear_pending (EV_A_ (W)w);	2778	clear_pending (EV_A_ (W)w);
2062	if (expect_false (!ev_is_active (w)))	2779	if (expect_false (!ev_is_active (w)))
2063	return;	2780	return;
2064		2781
		2782	EV_FREQUENT_CHECK;
		2783
2065	wlist_del (&signals [w->signum - 1].head, (WL)w);	2784	wlist_del (&signals [w->signum - 1].head, (WL)w);
2066	ev_stop (EV_A_ (W)w);	2785	ev_stop (EV_A_ (W)w);
2067		2786
2068	if (!signals [w->signum - 1].head)	2787	if (!signals [w->signum - 1].head)
		2788	{
		2789	#if EV_MULTIPLICITY
		2790	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2791	#endif
		2792	#if EV_USE_SIGNALFD
		2793	if (sigfd >= 0)
		2794	{
		2795	sigset_t ss;
		2796
		2797	sigemptyset (&ss);
		2798	sigaddset (&ss, w->signum);
		2799	sigdelset (&sigfd_set, w->signum);
		2800
		2801	signalfd (sigfd, &sigfd_set, 0);
		2802	sigprocmask (SIG_UNBLOCK, &ss, 0);
		2803	}
		2804	else
		2805	#endif
2069	signal (w->signum, SIG_DFL);	2806	signal (w->signum, SIG_DFL);
		2807	}
		2808
		2809	EV_FREQUENT_CHECK;
2070	}	2810	}
2071		2811
2072	void	2812	void
2073	ev_child_start (EV_P_ ev_child *w)	2813	ev_child_start (EV_P_ ev_child *w)
2074	{	2814	{
2075	#if EV_MULTIPLICITY	2815	#if EV_MULTIPLICITY
2076	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));
2077	#endif	2817	#endif
2078	if (expect_false (ev_is_active (w)))	2818	if (expect_false (ev_is_active (w)))
2079	return;	2819	return;
2080		2820
		2821	EV_FREQUENT_CHECK;
		2822
2081	ev_start (EV_A_ (W)w, 1);	2823	ev_start (EV_A_ (W)w, 1);
2082	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;
2083	}	2827	}
2084		2828
2085	void	2829	void
2086	ev_child_stop (EV_P_ ev_child *w)	2830	ev_child_stop (EV_P_ ev_child *w)
2087	{	2831	{
2088	clear_pending (EV_A_ (W)w);	2832	clear_pending (EV_A_ (W)w);
2089	if (expect_false (!ev_is_active (w)))	2833	if (expect_false (!ev_is_active (w)))
2090	return;	2834	return;
2091		2835
		2836	EV_FREQUENT_CHECK;
		2837
2092	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2838	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2093	ev_stop (EV_A_ (W)w);	2839	ev_stop (EV_A_ (W)w);
		2840
		2841	EV_FREQUENT_CHECK;
2094	}	2842	}
2095		2843
2096	#if EV_STAT_ENABLE	2844	#if EV_STAT_ENABLE
2097		2845
2098	# ifdef _WIN32	2846	# ifdef _WIN32
2099	# undef lstat	2847	# undef lstat
2100	# define lstat(a,b) _stati64 (a,b)	2848	# define lstat(a,b) _stati64 (a,b)
2101	# endif	2849	# endif
2102		2850
2103	#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 */
2104	#define MIN_STAT_INTERVAL 0.1074891	2853	#define MIN_STAT_INTERVAL 0.1074891
2105		2854
2106	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);
2107		2856
2108	#if EV_USE_INOTIFY	2857	#if EV_USE_INOTIFY
2109	# define EV_INOTIFY_BUFSIZE 8192	2858	# define EV_INOTIFY_BUFSIZE 8192
…		…
2111	static void noinline	2860	static void noinline
2112	infy_add (EV_P_ ev_stat *w)	2861	infy_add (EV_P_ ev_stat *w)
2113	{	2862	{
2114	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);
2115		2864
2116	if (w->wd < 0)	2865	if (w->wd >= 0)
		2866	{
		2867	struct statfs sfs;
		2868
		2869	/* now local changes will be tracked by inotify, but remote changes won't */
		2870	/* unless the filesystem is known to be local, we therefore still poll */
		2871	/* also do poll on <2.6.25, but with normal frequency */
		2872
		2873	if (!fs_2625)
		2874	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2875	else if (!statfs (w->path, &sfs)
		2876	&& (sfs.f_type == 0x1373 /* devfs */
		2877	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2878	|| sfs.f_type == 0x3153464a /* jfs */
		2879	|| sfs.f_type == 0x52654973 /* reiser3 */
		2880	|| sfs.f_type == 0x01021994 /* tempfs */
		2881	|| sfs.f_type == 0x58465342 /* xfs */))
		2882	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2883	else
		2884	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2117	{	2885	}
2118	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2886	else
		2887	{
		2888	/* can't use inotify, continue to stat */
		2889	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2119		2890
2120	/* monitor some parent directory for speedup hints */	2891	/* if path is not there, monitor some parent directory for speedup hints */
2121	/* note that exceeding the hardcoded limit is not a correctness issue, */	2892	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2122	/* but an efficiency issue only */	2893	/* but an efficiency issue only */
2123	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2894	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2124	{	2895	{
2125	char path [4096];	2896	char path [4096];
2126	strcpy (path, w->path);	2897	strcpy (path, w->path);
…		…
2130	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2901	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2131	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2902	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2132		2903
2133	char *pend = strrchr (path, '/');	2904	char *pend = strrchr (path, '/');
2134		2905
2135	if (!pend)	2906	if (!pend || pend == path)
2136	break; /* whoops, no '/', complain to your admin */	2907	break;
2137		2908
2138	*pend = 0;	2909	*pend = 0;
2139	w->wd = inotify_add_watch (fs_fd, path, mask);	2910	w->wd = inotify_add_watch (fs_fd, path, mask);
2140	}	2911	}
2141	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2912	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2142	}	2913	}
2143	}	2914	}
2144	else
2145	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2146		2915
2147	if (w->wd >= 0)	2916	if (w->wd >= 0)
2148	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2917	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2918
		2919	/* now re-arm timer, if required */
		2920	if (ev_is_active (&w->timer)) ev_ref (EV_A);
		2921	ev_timer_again (EV_A_ &w->timer);
		2922	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2149	}	2923	}
2150		2924
2151	static void noinline	2925	static void noinline
2152	infy_del (EV_P_ ev_stat *w)	2926	infy_del (EV_P_ ev_stat *w)
2153	{	2927	{
…		…
2167		2941
2168	static void noinline	2942	static void noinline
2169	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2943	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2170	{	2944	{
2171	if (slot < 0)	2945	if (slot < 0)
2172	/* overflow, need to check for all hahs slots */	2946	/* overflow, need to check for all hash slots */
2173	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2947	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2174	infy_wd (EV_A_ slot, wd, ev);	2948	infy_wd (EV_A_ slot, wd, ev);
2175	else	2949	else
2176	{	2950	{
2177	WL w_;	2951	WL w_;
…		…
2183		2957
2184	if (w->wd == wd || wd == -1)	2958	if (w->wd == wd || wd == -1)
2185	{	2959	{
2186	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2960	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2187	{	2961	{
		2962	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2188	w->wd = -1;	2963	w->wd = -1;
2189	infy_add (EV_A_ w); /* re-add, no matter what */	2964	infy_add (EV_A_ w); /* re-add, no matter what */
2190	}	2965	}
2191		2966
2192	stat_timer_cb (EV_A_ &w->timer, 0);	2967	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2205		2980
2206	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2981	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2207	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2982	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2208	}	2983	}
2209		2984
2210	void inline_size	2985	inline_size void
		2986	check_2625 (EV_P)
		2987	{
		2988	/* kernels < 2.6.25 are borked
		2989	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2990	*/
		2991	struct utsname buf;
		2992	int major, minor, micro;
		2993
		2994	if (uname (&buf))
		2995	return;
		2996
		2997	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2998	return;
		2999
		3000	if (major < 2
		3001	|| (major == 2 && minor < 6)
		3002	|| (major == 2 && minor == 6 && micro < 25))
		3003	return;
		3004
		3005	fs_2625 = 1;
		3006	}
		3007
		3008	inline_size int
		3009	infy_newfd (void)
		3010	{
		3011	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3012	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3013	if (fd >= 0)
		3014	return fd;
		3015	#endif
		3016	return inotify_init ();
		3017	}
		3018
		3019	inline_size void
2211	infy_init (EV_P)	3020	infy_init (EV_P)
2212	{	3021	{
2213	if (fs_fd != -2)	3022	if (fs_fd != -2)
2214	return;	3023	return;
2215		3024
		3025	fs_fd = -1;
		3026
		3027	check_2625 (EV_A);
		3028
2216	fs_fd = inotify_init ();	3029	fs_fd = infy_newfd ();
2217		3030
2218	if (fs_fd >= 0)	3031	if (fs_fd >= 0)
2219	{	3032	{
		3033	fd_intern (fs_fd);
2220	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3034	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2221	ev_set_priority (&fs_w, EV_MAXPRI);	3035	ev_set_priority (&fs_w, EV_MAXPRI);
2222	ev_io_start (EV_A_ &fs_w);	3036	ev_io_start (EV_A_ &fs_w);
		3037	ev_unref (EV_A);
2223	}	3038	}
2224	}	3039	}
2225		3040
2226	void inline_size	3041	inline_size void
2227	infy_fork (EV_P)	3042	infy_fork (EV_P)
2228	{	3043	{
2229	int slot;	3044	int slot;
2230		3045
2231	if (fs_fd < 0)	3046	if (fs_fd < 0)
2232	return;	3047	return;
2233		3048
		3049	ev_ref (EV_A);
		3050	ev_io_stop (EV_A_ &fs_w);
2234	close (fs_fd);	3051	close (fs_fd);
2235	fs_fd = inotify_init ();	3052	fs_fd = infy_newfd ();
		3053
		3054	if (fs_fd >= 0)
		3055	{
		3056	fd_intern (fs_fd);
		3057	ev_io_set (&fs_w, fs_fd, EV_READ);
		3058	ev_io_start (EV_A_ &fs_w);
		3059	ev_unref (EV_A);
		3060	}
2236		3061
2237	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3062	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2238	{	3063	{
2239	WL w_ = fs_hash [slot].head;	3064	WL w_ = fs_hash [slot].head;
2240	fs_hash [slot].head = 0;	3065	fs_hash [slot].head = 0;
…		…
2247	w->wd = -1;	3072	w->wd = -1;
2248		3073
2249	if (fs_fd >= 0)	3074	if (fs_fd >= 0)
2250	infy_add (EV_A_ w); /* re-add, no matter what */	3075	infy_add (EV_A_ w); /* re-add, no matter what */
2251	else	3076	else
		3077	{
		3078	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3079	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2252	ev_timer_start (EV_A_ &w->timer);	3080	ev_timer_again (EV_A_ &w->timer);
		3081	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3082	}
2253	}	3083	}
2254
2255	}	3084	}
2256	}	3085	}
2257		3086
		3087	#endif
		3088
		3089	#ifdef _WIN32
		3090	# define EV_LSTAT(p,b) _stati64 (p, b)
		3091	#else
		3092	# define EV_LSTAT(p,b) lstat (p, b)
2258	#endif	3093	#endif
2259		3094
2260	void	3095	void
2261	ev_stat_stat (EV_P_ ev_stat *w)	3096	ev_stat_stat (EV_P_ ev_stat *w)
2262	{	3097	{
…		…
2269	static void noinline	3104	static void noinline
2270	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3105	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2271	{	3106	{
2272	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	3107	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2273		3108
2274	/* we copy this here each the time so that */	3109	ev_statdata prev = w->attr;
2275	/* prev has the old value when the callback gets invoked */
2276	w->prev = w->attr;
2277	ev_stat_stat (EV_A_ w);	3110	ev_stat_stat (EV_A_ w);
2278		3111
2279	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3112	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2280	if (	3113	if (
2281	w->prev.st_dev != w->attr.st_dev	3114	prev.st_dev != w->attr.st_dev
2282	|| w->prev.st_ino != w->attr.st_ino	3115	|| prev.st_ino != w->attr.st_ino
2283	|| w->prev.st_mode != w->attr.st_mode	3116	|| prev.st_mode != w->attr.st_mode
2284	|| w->prev.st_nlink != w->attr.st_nlink	3117	|| prev.st_nlink != w->attr.st_nlink
2285	|| w->prev.st_uid != w->attr.st_uid	3118	|| prev.st_uid != w->attr.st_uid
2286	|| w->prev.st_gid != w->attr.st_gid	3119	|| prev.st_gid != w->attr.st_gid
2287	|| w->prev.st_rdev != w->attr.st_rdev	3120	|| prev.st_rdev != w->attr.st_rdev
2288	|| w->prev.st_size != w->attr.st_size	3121	|| prev.st_size != w->attr.st_size
2289	|| w->prev.st_atime != w->attr.st_atime	3122	|| prev.st_atime != w->attr.st_atime
2290	|| w->prev.st_mtime != w->attr.st_mtime	3123	|| prev.st_mtime != w->attr.st_mtime
2291	|| w->prev.st_ctime != w->attr.st_ctime	3124	|| prev.st_ctime != w->attr.st_ctime
2292	) {	3125	) {
		3126	/* we only update w->prev on actual differences */
		3127	/* in case we test more often than invoke the callback, */
		3128	/* to ensure that prev is always different to attr */
		3129	w->prev = prev;
		3130
2293	#if EV_USE_INOTIFY	3131	#if EV_USE_INOTIFY
		3132	if (fs_fd >= 0)
		3133	{
2294	infy_del (EV_A_ w);	3134	infy_del (EV_A_ w);
2295	infy_add (EV_A_ w);	3135	infy_add (EV_A_ w);
2296	ev_stat_stat (EV_A_ w); /* avoid race... */	3136	ev_stat_stat (EV_A_ w); /* avoid race... */
		3137	}
2297	#endif	3138	#endif
2298		3139
2299	ev_feed_event (EV_A_ w, EV_STAT);	3140	ev_feed_event (EV_A_ w, EV_STAT);
2300	}	3141	}
2301	}	3142	}
…		…
2304	ev_stat_start (EV_P_ ev_stat *w)	3145	ev_stat_start (EV_P_ ev_stat *w)
2305	{	3146	{
2306	if (expect_false (ev_is_active (w)))	3147	if (expect_false (ev_is_active (w)))
2307	return;	3148	return;
2308		3149
2309	/* since we use memcmp, we need to clear any padding data etc. */
2310	memset (&w->prev, 0, sizeof (ev_statdata));
2311	memset (&w->attr, 0, sizeof (ev_statdata));
2312
2313	ev_stat_stat (EV_A_ w);	3150	ev_stat_stat (EV_A_ w);
2314		3151
		3152	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2315	if (w->interval < MIN_STAT_INTERVAL)	3153	w->interval = MIN_STAT_INTERVAL;
2316	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2317		3154
2318	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3155	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2319	ev_set_priority (&w->timer, ev_priority (w));	3156	ev_set_priority (&w->timer, ev_priority (w));
2320		3157
2321	#if EV_USE_INOTIFY	3158	#if EV_USE_INOTIFY
2322	infy_init (EV_A);	3159	infy_init (EV_A);
2323		3160
2324	if (fs_fd >= 0)	3161	if (fs_fd >= 0)
2325	infy_add (EV_A_ w);	3162	infy_add (EV_A_ w);
2326	else	3163	else
2327	#endif	3164	#endif
		3165	{
2328	ev_timer_start (EV_A_ &w->timer);	3166	ev_timer_again (EV_A_ &w->timer);
		3167	ev_unref (EV_A);
		3168	}
2329		3169
2330	ev_start (EV_A_ (W)w, 1);	3170	ev_start (EV_A_ (W)w, 1);
		3171
		3172	EV_FREQUENT_CHECK;
2331	}	3173	}
2332		3174
2333	void	3175	void
2334	ev_stat_stop (EV_P_ ev_stat *w)	3176	ev_stat_stop (EV_P_ ev_stat *w)
2335	{	3177	{
2336	clear_pending (EV_A_ (W)w);	3178	clear_pending (EV_A_ (W)w);
2337	if (expect_false (!ev_is_active (w)))	3179	if (expect_false (!ev_is_active (w)))
2338	return;	3180	return;
2339		3181
		3182	EV_FREQUENT_CHECK;
		3183
2340	#if EV_USE_INOTIFY	3184	#if EV_USE_INOTIFY
2341	infy_del (EV_A_ w);	3185	infy_del (EV_A_ w);
2342	#endif	3186	#endif
		3187
		3188	if (ev_is_active (&w->timer))
		3189	{
		3190	ev_ref (EV_A);
2343	ev_timer_stop (EV_A_ &w->timer);	3191	ev_timer_stop (EV_A_ &w->timer);
		3192	}
2344		3193
2345	ev_stop (EV_A_ (W)w);	3194	ev_stop (EV_A_ (W)w);
		3195
		3196	EV_FREQUENT_CHECK;
2346	}	3197	}
2347	#endif	3198	#endif
2348		3199
2349	#if EV_IDLE_ENABLE	3200	#if EV_IDLE_ENABLE
2350	void	3201	void
…		…
2352	{	3203	{
2353	if (expect_false (ev_is_active (w)))	3204	if (expect_false (ev_is_active (w)))
2354	return;	3205	return;
2355		3206
2356	pri_adjust (EV_A_ (W)w);	3207	pri_adjust (EV_A_ (W)w);
		3208
		3209	EV_FREQUENT_CHECK;
2357		3210
2358	{	3211	{
2359	int active = ++idlecnt [ABSPRI (w)];	3212	int active = ++idlecnt [ABSPRI (w)];
2360		3213
2361	++idleall;	3214	++idleall;
2362	ev_start (EV_A_ (W)w, active);	3215	ev_start (EV_A_ (W)w, active);
2363		3216
2364	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	3217	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2365	idles [ABSPRI (w)][active - 1] = w;	3218	idles [ABSPRI (w)][active - 1] = w;
2366	}	3219	}
		3220
		3221	EV_FREQUENT_CHECK;
2367	}	3222	}
2368		3223
2369	void	3224	void
2370	ev_idle_stop (EV_P_ ev_idle *w)	3225	ev_idle_stop (EV_P_ ev_idle *w)
2371	{	3226	{
2372	clear_pending (EV_A_ (W)w);	3227	clear_pending (EV_A_ (W)w);
2373	if (expect_false (!ev_is_active (w)))	3228	if (expect_false (!ev_is_active (w)))
2374	return;	3229	return;
2375		3230
		3231	EV_FREQUENT_CHECK;
		3232
2376	{	3233	{
2377	int active = ev_active (w);	3234	int active = ev_active (w);
2378		3235
2379	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3236	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2380	ev_active (idles [ABSPRI (w)][active - 1]) = active;	3237	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2381		3238
2382	ev_stop (EV_A_ (W)w);	3239	ev_stop (EV_A_ (W)w);
2383	--idleall;	3240	--idleall;
2384	}	3241	}
		3242
		3243	EV_FREQUENT_CHECK;
2385	}	3244	}
2386	#endif	3245	#endif
2387		3246
2388	void	3247	void
2389	ev_prepare_start (EV_P_ ev_prepare *w)	3248	ev_prepare_start (EV_P_ ev_prepare *w)
2390	{	3249	{
2391	if (expect_false (ev_is_active (w)))	3250	if (expect_false (ev_is_active (w)))
2392	return;	3251	return;
		3252
		3253	EV_FREQUENT_CHECK;
2393		3254
2394	ev_start (EV_A_ (W)w, ++preparecnt);	3255	ev_start (EV_A_ (W)w, ++preparecnt);
2395	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3256	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2396	prepares [preparecnt - 1] = w;	3257	prepares [preparecnt - 1] = w;
		3258
		3259	EV_FREQUENT_CHECK;
2397	}	3260	}
2398		3261
2399	void	3262	void
2400	ev_prepare_stop (EV_P_ ev_prepare *w)	3263	ev_prepare_stop (EV_P_ ev_prepare *w)
2401	{	3264	{
2402	clear_pending (EV_A_ (W)w);	3265	clear_pending (EV_A_ (W)w);
2403	if (expect_false (!ev_is_active (w)))	3266	if (expect_false (!ev_is_active (w)))
2404	return;	3267	return;
2405		3268
		3269	EV_FREQUENT_CHECK;
		3270
2406	{	3271	{
2407	int active = ev_active (w);	3272	int active = ev_active (w);
2408		3273
2409	prepares [active - 1] = prepares [--preparecnt];	3274	prepares [active - 1] = prepares [--preparecnt];
2410	ev_active (prepares [active - 1]) = active;	3275	ev_active (prepares [active - 1]) = active;
2411	}	3276	}
2412		3277
2413	ev_stop (EV_A_ (W)w);	3278	ev_stop (EV_A_ (W)w);
		3279
		3280	EV_FREQUENT_CHECK;
2414	}	3281	}
2415		3282
2416	void	3283	void
2417	ev_check_start (EV_P_ ev_check *w)	3284	ev_check_start (EV_P_ ev_check *w)
2418	{	3285	{
2419	if (expect_false (ev_is_active (w)))	3286	if (expect_false (ev_is_active (w)))
2420	return;	3287	return;
		3288
		3289	EV_FREQUENT_CHECK;
2421		3290
2422	ev_start (EV_A_ (W)w, ++checkcnt);	3291	ev_start (EV_A_ (W)w, ++checkcnt);
2423	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3292	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2424	checks [checkcnt - 1] = w;	3293	checks [checkcnt - 1] = w;
		3294
		3295	EV_FREQUENT_CHECK;
2425	}	3296	}
2426		3297
2427	void	3298	void
2428	ev_check_stop (EV_P_ ev_check *w)	3299	ev_check_stop (EV_P_ ev_check *w)
2429	{	3300	{
2430	clear_pending (EV_A_ (W)w);	3301	clear_pending (EV_A_ (W)w);
2431	if (expect_false (!ev_is_active (w)))	3302	if (expect_false (!ev_is_active (w)))
2432	return;	3303	return;
2433		3304
		3305	EV_FREQUENT_CHECK;
		3306
2434	{	3307	{
2435	int active = ev_active (w);	3308	int active = ev_active (w);
2436		3309
2437	checks [active - 1] = checks [--checkcnt];	3310	checks [active - 1] = checks [--checkcnt];
2438	ev_active (checks [active - 1]) = active;	3311	ev_active (checks [active - 1]) = active;
2439	}	3312	}
2440		3313
2441	ev_stop (EV_A_ (W)w);	3314	ev_stop (EV_A_ (W)w);
		3315
		3316	EV_FREQUENT_CHECK;
2442	}	3317	}
2443		3318
2444	#if EV_EMBED_ENABLE	3319	#if EV_EMBED_ENABLE
2445	void noinline	3320	void noinline
2446	ev_embed_sweep (EV_P_ ev_embed *w)	3321	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2463	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3338	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2464	{	3339	{
2465	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3340	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2466		3341
2467	{	3342	{
2468	struct ev_loop *loop = w->other;	3343	EV_P = w->other;
2469		3344
2470	while (fdchangecnt)	3345	while (fdchangecnt)
2471	{	3346	{
2472	fd_reify (EV_A);	3347	fd_reify (EV_A);
2473	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3348	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2474	}	3349	}
2475	}	3350	}
2476	}	3351	}
2477		3352
		3353	static void
		3354	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3355	{
		3356	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3357
		3358	ev_embed_stop (EV_A_ w);
		3359
		3360	{
		3361	EV_P = w->other;
		3362
		3363	ev_loop_fork (EV_A);
		3364	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3365	}
		3366
		3367	ev_embed_start (EV_A_ w);
		3368	}
		3369
2478	#if 0	3370	#if 0
2479	static void	3371	static void
2480	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3372	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2481	{	3373	{
2482	ev_idle_stop (EV_A_ idle);	3374	ev_idle_stop (EV_A_ idle);
…		…
2488	{	3380	{
2489	if (expect_false (ev_is_active (w)))	3381	if (expect_false (ev_is_active (w)))
2490	return;	3382	return;
2491		3383
2492	{	3384	{
2493	struct ev_loop *loop = w->other;	3385	EV_P = w->other;
2494	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3386	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2495	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3387	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2496	}	3388	}
		3389
		3390	EV_FREQUENT_CHECK;
2497		3391
2498	ev_set_priority (&w->io, ev_priority (w));	3392	ev_set_priority (&w->io, ev_priority (w));
2499	ev_io_start (EV_A_ &w->io);	3393	ev_io_start (EV_A_ &w->io);
2500		3394
2501	ev_prepare_init (&w->prepare, embed_prepare_cb);	3395	ev_prepare_init (&w->prepare, embed_prepare_cb);
2502	ev_set_priority (&w->prepare, EV_MINPRI);	3396	ev_set_priority (&w->prepare, EV_MINPRI);
2503	ev_prepare_start (EV_A_ &w->prepare);	3397	ev_prepare_start (EV_A_ &w->prepare);
2504		3398
		3399	ev_fork_init (&w->fork, embed_fork_cb);
		3400	ev_fork_start (EV_A_ &w->fork);
		3401
2505	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3402	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2506		3403
2507	ev_start (EV_A_ (W)w, 1);	3404	ev_start (EV_A_ (W)w, 1);
		3405
		3406	EV_FREQUENT_CHECK;
2508	}	3407	}
2509		3408
2510	void	3409	void
2511	ev_embed_stop (EV_P_ ev_embed *w)	3410	ev_embed_stop (EV_P_ ev_embed *w)
2512	{	3411	{
2513	clear_pending (EV_A_ (W)w);	3412	clear_pending (EV_A_ (W)w);
2514	if (expect_false (!ev_is_active (w)))	3413	if (expect_false (!ev_is_active (w)))
2515	return;	3414	return;
2516		3415
		3416	EV_FREQUENT_CHECK;
		3417
2517	ev_io_stop (EV_A_ &w->io);	3418	ev_io_stop (EV_A_ &w->io);
2518	ev_prepare_stop (EV_A_ &w->prepare);	3419	ev_prepare_stop (EV_A_ &w->prepare);
		3420	ev_fork_stop (EV_A_ &w->fork);
2519		3421
2520	ev_stop (EV_A_ (W)w);	3422	EV_FREQUENT_CHECK;
2521	}	3423	}
2522	#endif	3424	#endif
2523		3425
2524	#if EV_FORK_ENABLE	3426	#if EV_FORK_ENABLE
2525	void	3427	void
2526	ev_fork_start (EV_P_ ev_fork *w)	3428	ev_fork_start (EV_P_ ev_fork *w)
2527	{	3429	{
2528	if (expect_false (ev_is_active (w)))	3430	if (expect_false (ev_is_active (w)))
2529	return;	3431	return;
		3432
		3433	EV_FREQUENT_CHECK;
2530		3434
2531	ev_start (EV_A_ (W)w, ++forkcnt);	3435	ev_start (EV_A_ (W)w, ++forkcnt);
2532	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3436	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2533	forks [forkcnt - 1] = w;	3437	forks [forkcnt - 1] = w;
		3438
		3439	EV_FREQUENT_CHECK;
2534	}	3440	}
2535		3441
2536	void	3442	void
2537	ev_fork_stop (EV_P_ ev_fork *w)	3443	ev_fork_stop (EV_P_ ev_fork *w)
2538	{	3444	{
2539	clear_pending (EV_A_ (W)w);	3445	clear_pending (EV_A_ (W)w);
2540	if (expect_false (!ev_is_active (w)))	3446	if (expect_false (!ev_is_active (w)))
2541	return;	3447	return;
2542		3448
		3449	EV_FREQUENT_CHECK;
		3450
2543	{	3451	{
2544	int active = ev_active (w);	3452	int active = ev_active (w);
2545		3453
2546	forks [active - 1] = forks [--forkcnt];	3454	forks [active - 1] = forks [--forkcnt];
2547	ev_active (forks [active - 1]) = active;	3455	ev_active (forks [active - 1]) = active;
2548	}	3456	}
2549		3457
2550	ev_stop (EV_A_ (W)w);	3458	ev_stop (EV_A_ (W)w);
		3459
		3460	EV_FREQUENT_CHECK;
2551	}	3461	}
2552	#endif	3462	#endif
2553		3463
2554	#if EV_ASYNC_ENABLE	3464	#if EV_ASYNC_ENABLE
2555	void	3465	void
…		…
2557	{	3467	{
2558	if (expect_false (ev_is_active (w)))	3468	if (expect_false (ev_is_active (w)))
2559	return;	3469	return;
2560		3470
2561	evpipe_init (EV_A);	3471	evpipe_init (EV_A);
		3472
		3473	EV_FREQUENT_CHECK;
2562		3474
2563	ev_start (EV_A_ (W)w, ++asynccnt);	3475	ev_start (EV_A_ (W)w, ++asynccnt);
2564	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3476	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2565	asyncs [asynccnt - 1] = w;	3477	asyncs [asynccnt - 1] = w;
		3478
		3479	EV_FREQUENT_CHECK;
2566	}	3480	}
2567		3481
2568	void	3482	void
2569	ev_async_stop (EV_P_ ev_async *w)	3483	ev_async_stop (EV_P_ ev_async *w)
2570	{	3484	{
2571	clear_pending (EV_A_ (W)w);	3485	clear_pending (EV_A_ (W)w);
2572	if (expect_false (!ev_is_active (w)))	3486	if (expect_false (!ev_is_active (w)))
2573	return;	3487	return;
2574		3488
		3489	EV_FREQUENT_CHECK;
		3490
2575	{	3491	{
2576	int active = ev_active (w);	3492	int active = ev_active (w);
2577		3493
2578	asyncs [active - 1] = asyncs [--asynccnt];	3494	asyncs [active - 1] = asyncs [--asynccnt];
2579	ev_active (asyncs [active - 1]) = active;	3495	ev_active (asyncs [active - 1]) = active;
2580	}	3496	}
2581		3497
2582	ev_stop (EV_A_ (W)w);	3498	ev_stop (EV_A_ (W)w);
		3499
		3500	EV_FREQUENT_CHECK;
2583	}	3501	}
2584		3502
2585	void	3503	void
2586	ev_async_send (EV_P_ ev_async *w)	3504	ev_async_send (EV_P_ ev_async *w)
2587	{	3505	{
2588	w->sent = 1;	3506	w->sent = 1;
2589	evpipe_write (EV_A_ &gotasync);	3507	evpipe_write (EV_A_ &async_pending);
2590	}	3508	}
2591	#endif	3509	#endif
2592		3510
2593	/*****************************************************************************/	3511	/*****************************************************************************/
2594		3512
…		…
2604	once_cb (EV_P_ struct ev_once *once, int revents)	3522	once_cb (EV_P_ struct ev_once *once, int revents)
2605	{	3523	{
2606	void (*cb)(int revents, void *arg) = once->cb;	3524	void (*cb)(int revents, void *arg) = once->cb;
2607	void *arg = once->arg;	3525	void *arg = once->arg;
2608		3526
2609	ev_io_stop (EV_A_ &once->io);	3527	ev_io_stop (EV_A_ &once->io);
2610	ev_timer_stop (EV_A_ &once->to);	3528	ev_timer_stop (EV_A_ &once->to);
2611	ev_free (once);	3529	ev_free (once);
2612		3530
2613	cb (revents, arg);	3531	cb (revents, arg);
2614	}	3532	}
2615		3533
2616	static void	3534	static void
2617	once_cb_io (EV_P_ ev_io *w, int revents)	3535	once_cb_io (EV_P_ ev_io *w, int revents)
2618	{	3536	{
2619	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3537	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3538
		3539	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2620	}	3540	}
2621		3541
2622	static void	3542	static void
2623	once_cb_to (EV_P_ ev_timer *w, int revents)	3543	once_cb_to (EV_P_ ev_timer *w, int revents)
2624	{	3544	{
2625	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3545	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3546
		3547	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2626	}	3548	}
2627		3549
2628	void	3550	void
2629	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3551	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2630	{	3552	{
…		…
2652	ev_timer_set (&once->to, timeout, 0.);	3574	ev_timer_set (&once->to, timeout, 0.);
2653	ev_timer_start (EV_A_ &once->to);	3575	ev_timer_start (EV_A_ &once->to);
2654	}	3576	}
2655	}	3577	}
2656		3578
		3579	/*****************************************************************************/
		3580
		3581	#if EV_WALK_ENABLE
		3582	void
		3583	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3584	{
		3585	int i, j;
		3586	ev_watcher_list *wl, *wn;
		3587
		3588	if (types & (EV_IO | EV_EMBED))
		3589	for (i = 0; i < anfdmax; ++i)
		3590	for (wl = anfds [i].head; wl; )
		3591	{
		3592	wn = wl->next;
		3593
		3594	#if EV_EMBED_ENABLE
		3595	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3596	{
		3597	if (types & EV_EMBED)
		3598	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3599	}
		3600	else
		3601	#endif
		3602	#if EV_USE_INOTIFY
		3603	if (ev_cb ((ev_io *)wl) == infy_cb)
		3604	;
		3605	else
		3606	#endif
		3607	if ((ev_io *)wl != &pipe_w)
		3608	if (types & EV_IO)
		3609	cb (EV_A_ EV_IO, wl);
		3610
		3611	wl = wn;
		3612	}
		3613
		3614	if (types & (EV_TIMER | EV_STAT))
		3615	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3616	#if EV_STAT_ENABLE
		3617	/*TODO: timer is not always active*/
		3618	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3619	{
		3620	if (types & EV_STAT)
		3621	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3622	}
		3623	else
		3624	#endif
		3625	if (types & EV_TIMER)
		3626	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3627
		3628	#if EV_PERIODIC_ENABLE
		3629	if (types & EV_PERIODIC)
		3630	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3631	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3632	#endif
		3633
		3634	#if EV_IDLE_ENABLE
		3635	if (types & EV_IDLE)
		3636	for (j = NUMPRI; i--; )
		3637	for (i = idlecnt [j]; i--; )
		3638	cb (EV_A_ EV_IDLE, idles [j][i]);
		3639	#endif
		3640
		3641	#if EV_FORK_ENABLE
		3642	if (types & EV_FORK)
		3643	for (i = forkcnt; i--; )
		3644	if (ev_cb (forks [i]) != embed_fork_cb)
		3645	cb (EV_A_ EV_FORK, forks [i]);
		3646	#endif
		3647
		3648	#if EV_ASYNC_ENABLE
		3649	if (types & EV_ASYNC)
		3650	for (i = asynccnt; i--; )
		3651	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3652	#endif
		3653
		3654	if (types & EV_PREPARE)
		3655	for (i = preparecnt; i--; )
		3656	#if EV_EMBED_ENABLE
		3657	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3658	#endif
		3659	cb (EV_A_ EV_PREPARE, prepares [i]);
		3660
		3661	if (types & EV_CHECK)
		3662	for (i = checkcnt; i--; )
		3663	cb (EV_A_ EV_CHECK, checks [i]);
		3664
		3665	if (types & EV_SIGNAL)
		3666	for (i = 0; i < EV_NSIG - 1; ++i)
		3667	for (wl = signals [i].head; wl; )
		3668	{
		3669	wn = wl->next;
		3670	cb (EV_A_ EV_SIGNAL, wl);
		3671	wl = wn;
		3672	}
		3673
		3674	if (types & EV_CHILD)
		3675	for (i = EV_PID_HASHSIZE; i--; )
		3676	for (wl = childs [i]; wl; )
		3677	{
		3678	wn = wl->next;
		3679	cb (EV_A_ EV_CHILD, wl);
		3680	wl = wn;
		3681	}
		3682	/* EV_STAT 0x00001000 /* stat data changed */
		3683	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3684	}
		3685	#endif
		3686
2657	#if EV_MULTIPLICITY	3687	#if EV_MULTIPLICITY
2658	#include "ev_wrap.h"	3688	#include "ev_wrap.h"
2659	#endif	3689	#endif
2660		3690
2661	#ifdef __cplusplus	3691	#ifdef __cplusplus

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