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Comparing libev/ev.c (file contents):
Revision 1.224 by root, Wed Apr 9 22:07:50 2008 UTC vs.
Revision 1.320 by root, Fri Dec 4 20:25:06 2009 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
47	# include EV_CONFIG_H	47	# include EV_CONFIG_H
48	# else	48	# else
49	# include "config.h"	49	# include "config.h"
50	# endif	50	# endif
51		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
		64	# endif
		65
52	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
55	# endif	69	# endif
56	# ifndef EV_USE_REALTIME	70	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	71	# define EV_USE_REALTIME 0
58	# endif	72	# endif
59	# else	73	# else
60	# ifndef EV_USE_MONOTONIC	74	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	75	# define EV_USE_MONOTONIC 0
62	# endif	76	# endif
…		…
119	# else	133	# else
120	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
121	# endif	135	# endif
122	# endif	136	# endif
123		137
		138	# ifndef EV_USE_SIGNALFD
		139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		140	# define EV_USE_SIGNALFD 1
		141	# else
		142	# define EV_USE_SIGNALFD 0
		143	# endif
		144	# endif
		145
124	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
125	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
126	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD 1
127	# else	149	# else
128	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
129	# endif	151	# endif
130	# endif	152	# endif
131		153
132	#endif	154	#endif
133		155
134	#include <math.h>	156	#include <math.h>
135	#include <stdlib.h>	157	#include <stdlib.h>
		158	#include <string.h>
136	#include <fcntl.h>	159	#include <fcntl.h>
137	#include <stddef.h>	160	#include <stddef.h>
138		161
139	#include <stdio.h>	162	#include <stdio.h>
140		163
…		…
154	#ifndef _WIN32	177	#ifndef _WIN32
155	# include <sys/time.h>	178	# include <sys/time.h>
156	# include <sys/wait.h>	179	# include <sys/wait.h>
157	# include <unistd.h>	180	# include <unistd.h>
158	#else	181	#else
		182	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	183	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	184	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	185	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	186	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	187	# endif
164	#endif	188	#endif
165		189
166	/* this block tries to deduce configuration from header-defined symbols and defaults */	190	/* this block tries to deduce configuration from header-defined symbols and defaults */
167		191
		192	/* try to deduce the maximum number of signals on this platform */
		193	#if defined (EV_NSIG)
		194	/* use what's provided */
		195	#elif defined (NSIG)
		196	# define EV_NSIG (NSIG)
		197	#elif defined(_NSIG)
		198	# define EV_NSIG (_NSIG)
		199	#elif defined (SIGMAX)
		200	# define EV_NSIG (SIGMAX+1)
		201	#elif defined (SIG_MAX)
		202	# define EV_NSIG (SIG_MAX+1)
		203	#elif defined (_SIG_MAX)
		204	# define EV_NSIG (_SIG_MAX+1)
		205	#elif defined (MAXSIG)
		206	# define EV_NSIG (MAXSIG+1)
		207	#elif defined (MAX_SIG)
		208	# define EV_NSIG (MAX_SIG+1)
		209	#elif defined (SIGARRAYSIZE)
		210	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		211	#elif defined (_sys_nsig)
		212	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		213	#else
		214	# error "unable to find value for NSIG, please report"
		215	/* to make it compile regardless, just remove the above line */
		216	# define EV_NSIG 65
		217	#endif
		218
		219	#ifndef EV_USE_CLOCK_SYSCALL
		220	# if __linux && __GLIBC__ >= 2
		221	# define EV_USE_CLOCK_SYSCALL 1
		222	# else
		223	# define EV_USE_CLOCK_SYSCALL 0
		224	# endif
		225	#endif
		226
168	#ifndef EV_USE_MONOTONIC	227	#ifndef EV_USE_MONOTONIC
		228	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		229	# define EV_USE_MONOTONIC 1
		230	# else
169	# define EV_USE_MONOTONIC 0	231	# define EV_USE_MONOTONIC 0
		232	# endif
170	#endif	233	#endif
171		234
172	#ifndef EV_USE_REALTIME	235	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	236	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	237	#endif
175		238
176	#ifndef EV_USE_NANOSLEEP	239	#ifndef EV_USE_NANOSLEEP
		240	# if _POSIX_C_SOURCE >= 199309L
		241	# define EV_USE_NANOSLEEP 1
		242	# else
177	# define EV_USE_NANOSLEEP 0	243	# define EV_USE_NANOSLEEP 0
		244	# endif
178	#endif	245	#endif
179		246
180	#ifndef EV_USE_SELECT	247	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	248	# define EV_USE_SELECT 1
182	#endif	249	#endif
…		…
235	# else	302	# else
236	# define EV_USE_EVENTFD 0	303	# define EV_USE_EVENTFD 0
237	# endif	304	# endif
238	#endif	305	#endif
239		306
		307	#ifndef EV_USE_SIGNALFD
		308	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		309	# define EV_USE_SIGNALFD 1
		310	# else
		311	# define EV_USE_SIGNALFD 0
		312	# endif
		313	#endif
		314
		315	#if 0 /* debugging */
		316	# define EV_VERIFY 3
		317	# define EV_USE_4HEAP 1
		318	# define EV_HEAP_CACHE_AT 1
		319	#endif
		320
		321	#ifndef EV_VERIFY
		322	# define EV_VERIFY !EV_MINIMAL
		323	#endif
		324
		325	#ifndef EV_USE_4HEAP
		326	# define EV_USE_4HEAP !EV_MINIMAL
		327	#endif
		328
		329	#ifndef EV_HEAP_CACHE_AT
		330	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		331	#endif
		332
		333	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		334	/* which makes programs even slower. might work on other unices, too. */
		335	#if EV_USE_CLOCK_SYSCALL
		336	# include <syscall.h>
		337	# ifdef SYS_clock_gettime
		338	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		339	# undef EV_USE_MONOTONIC
		340	# define EV_USE_MONOTONIC 1
		341	# else
		342	# undef EV_USE_CLOCK_SYSCALL
		343	# define EV_USE_CLOCK_SYSCALL 0
		344	# endif
		345	#endif
		346
240	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	347	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
241		348
242	#ifndef CLOCK_MONOTONIC	349	#ifndef CLOCK_MONOTONIC
243	# undef EV_USE_MONOTONIC	350	# undef EV_USE_MONOTONIC
244	# define EV_USE_MONOTONIC 0	351	# define EV_USE_MONOTONIC 0
…		…
259	# include <sys/select.h>	366	# include <sys/select.h>
260	# endif	367	# endif
261	#endif	368	#endif
262		369
263	#if EV_USE_INOTIFY	370	#if EV_USE_INOTIFY
		371	# include <sys/utsname.h>
		372	# include <sys/statfs.h>
264	# include <sys/inotify.h>	373	# include <sys/inotify.h>
		374	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		375	# ifndef IN_DONT_FOLLOW
		376	# undef EV_USE_INOTIFY
		377	# define EV_USE_INOTIFY 0
		378	# endif
265	#endif	379	#endif
266		380
267	#if EV_SELECT_IS_WINSOCKET	381	#if EV_SELECT_IS_WINSOCKET
268	# include <winsock.h>	382	# include <winsock.h>
269	#endif	383	#endif
270		384
271	#if EV_USE_EVENTFD	385	#if EV_USE_EVENTFD
272	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	386	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
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;
327	typedef ev_watcher_list *WL;	490	typedef ev_watcher_list *WL;
328	typedef ev_watcher_time *WT;	491	typedef ev_watcher_time *WT;
329		492
330	#if EV_USE_MONOTONIC	493	#define ev_active(w) ((W)(w))->active
		494	#define ev_at(w) ((WT)(w))->at
		495
		496	#if EV_USE_REALTIME
331	/* 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 */
332	/* 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
333	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	503	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		504	#endif
		505
		506	#ifndef EV_FD_TO_WIN32_HANDLE
		507	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		508	#endif
		509	#ifndef EV_WIN32_HANDLE_TO_FD
		510	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0)
		511	#endif
		512	#ifndef EV_WIN32_CLOSE_FD
		513	# define EV_WIN32_CLOSE_FD(fd) close (fd)
334	#endif	514	#endif
335		515
336	#ifdef _WIN32	516	#ifdef _WIN32
337	# include "ev_win32.c"	517	# include "ev_win32.c"
338	#endif	518	#endif
…		…
346	{	526	{
347	syserr_cb = cb;	527	syserr_cb = cb;
348	}	528	}
349		529
350	static void noinline	530	static void noinline
351	syserr (const char *msg)	531	ev_syserr (const char *msg)
352	{	532	{
353	if (!msg)	533	if (!msg)
354	msg = "(libev) system error";	534	msg = "(libev) system error";
355		535
356	if (syserr_cb)	536	if (syserr_cb)
…		…
402	#define ev_malloc(size) ev_realloc (0, (size))	582	#define ev_malloc(size) ev_realloc (0, (size))
403	#define ev_free(ptr) ev_realloc ((ptr), 0)	583	#define ev_free(ptr) ev_realloc ((ptr), 0)
404		584
405	/*****************************************************************************/	585	/*****************************************************************************/
406		586
		587	/* set in reify when reification needed */
		588	#define EV_ANFD_REIFY 1
		589
		590	/* file descriptor info structure */
407	typedef struct	591	typedef struct
408	{	592	{
409	WL head;	593	WL head;
410	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 */
411	unsigned char reify;	597	unsigned char unused;
		598	#if EV_USE_EPOLL
		599	unsigned int egen; /* generation counter to counter epoll bugs */
		600	#endif
412	#if EV_SELECT_IS_WINSOCKET	601	#if EV_SELECT_IS_WINSOCKET
413	SOCKET handle;	602	SOCKET handle;
414	#endif	603	#endif
415	} ANFD;	604	} ANFD;
416		605
		606	/* stores the pending event set for a given watcher */
417	typedef struct	607	typedef struct
418	{	608	{
419	W w;	609	W w;
420	int events;	610	int events; /* the pending event set for the given watcher */
421	} ANPENDING;	611	} ANPENDING;
422		612
423	#if EV_USE_INOTIFY	613	#if EV_USE_INOTIFY
		614	/* hash table entry per inotify-id */
424	typedef struct	615	typedef struct
425	{	616	{
426	WL head;	617	WL head;
427	} 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)
428	#endif	639	#endif
429		640
430	#if EV_MULTIPLICITY	641	#if EV_MULTIPLICITY
431		642
432	struct ev_loop	643	struct ev_loop
…		…
451		662
452	static int ev_default_loop_ptr;	663	static int ev_default_loop_ptr;
453		664
454	#endif	665	#endif
455		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
456	/*****************************************************************************/	679	/*****************************************************************************/
457		680
		681	#ifndef EV_HAVE_EV_TIME
458	ev_tstamp	682	ev_tstamp
459	ev_time (void)	683	ev_time (void)
460	{	684	{
461	#if EV_USE_REALTIME	685	#if EV_USE_REALTIME
		686	if (expect_true (have_realtime))
		687	{
462	struct timespec ts;	688	struct timespec ts;
463	clock_gettime (CLOCK_REALTIME, &ts);	689	clock_gettime (CLOCK_REALTIME, &ts);
464	return ts.tv_sec + ts.tv_nsec * 1e-9;	690	return ts.tv_sec + ts.tv_nsec * 1e-9;
465	#else	691	}
		692	#endif
		693
466	struct timeval tv;	694	struct timeval tv;
467	gettimeofday (&tv, 0);	695	gettimeofday (&tv, 0);
468	return tv.tv_sec + tv.tv_usec * 1e-6;	696	return tv.tv_sec + tv.tv_usec * 1e-6;
469	#endif
470	}	697	}
		698	#endif
471		699
472	ev_tstamp inline_size	700	inline_size ev_tstamp
473	get_clock (void)	701	get_clock (void)
474	{	702	{
475	#if EV_USE_MONOTONIC	703	#if EV_USE_MONOTONIC
476	if (expect_true (have_monotonic))	704	if (expect_true (have_monotonic))
477	{	705	{
…		…
510	struct timeval tv;	738	struct timeval tv;
511		739
512	tv.tv_sec = (time_t)delay;	740	tv.tv_sec = (time_t)delay;
513	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	741	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
514		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 */
515	select (0, 0, 0, 0, &tv);	746	select (0, 0, 0, 0, &tv);
516	#endif	747	#endif
517	}	748	}
518	}	749	}
519		750
520	/*****************************************************************************/	751	/*****************************************************************************/
521		752
522	int inline_size	753	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		754
		755	/* find a suitable new size for the given array, */
		756	/* hopefully by rounding to a ncie-to-malloc size */
		757	inline_size int
523	array_nextsize (int elem, int cur, int cnt)	758	array_nextsize (int elem, int cur, int cnt)
524	{	759	{
525	int ncur = cur + 1;	760	int ncur = cur + 1;
526		761
527	do	762	do
528	ncur <<= 1;	763	ncur <<= 1;
529	while (cnt > ncur);	764	while (cnt > ncur);
530		765
531	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	766	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
532	if (elem * ncur > 4096)	767	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
533	{	768	{
534	ncur *= elem;	769	ncur *= elem;
535	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	770	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
536	ncur = ncur - sizeof (void *) * 4;	771	ncur = ncur - sizeof (void *) * 4;
537	ncur /= elem;	772	ncur /= elem;
538	}	773	}
539		774
540	return ncur;	775	return ncur;
…		…
544	array_realloc (int elem, void *base, int *cur, int cnt)	779	array_realloc (int elem, void *base, int *cur, int cnt)
545	{	780	{
546	*cur = array_nextsize (elem, *cur, cnt);	781	*cur = array_nextsize (elem, *cur, cnt);
547	return ev_realloc (base, elem * *cur);	782	return ev_realloc (base, elem * *cur);
548	}	783	}
		784
		785	#define array_init_zero(base,count) \
		786	memset ((void *)(base), 0, sizeof (*(base)) * (count))
549		787
550	#define array_needsize(type,base,cur,cnt,init) \	788	#define array_needsize(type,base,cur,cnt,init) \
551	if (expect_false ((cnt) > (cur))) \	789	if (expect_false ((cnt) > (cur))) \
552	{ \	790	{ \
553	int ocur_ = (cur); \	791	int ocur_ = (cur); \
…		…
565	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	803	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
566	}	804	}
567	#endif	805	#endif
568		806
569	#define array_free(stem, idx) \	807	#define array_free(stem, idx) \
570	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
571		809
572	/*****************************************************************************/	810	/*****************************************************************************/
		811
		812	/* dummy callback for pending events */
		813	static void noinline
		814	pendingcb (EV_P_ ev_prepare *w, int revents)
		815	{
		816	}
573		817
574	void noinline	818	void noinline
575	ev_feed_event (EV_P_ void *w, int revents)	819	ev_feed_event (EV_P_ void *w, int revents)
576	{	820	{
577	W w_ = (W)w;	821	W w_ = (W)w;
…		…
586	pendings [pri][w_->pending - 1].w = w_;	830	pendings [pri][w_->pending - 1].w = w_;
587	pendings [pri][w_->pending - 1].events = revents;	831	pendings [pri][w_->pending - 1].events = revents;
588	}	832	}
589	}	833	}
590		834
591	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
592	queue_events (EV_P_ W *events, int eventcnt, int type)	851	queue_events (EV_P_ W *events, int eventcnt, int type)
593	{	852	{
594	int i;	853	int i;
595		854
596	for (i = 0; i < eventcnt; ++i)	855	for (i = 0; i < eventcnt; ++i)
597	ev_feed_event (EV_A_ events [i], type);	856	ev_feed_event (EV_A_ events [i], type);
598	}	857	}
599		858
600	/*****************************************************************************/	859	/*****************************************************************************/
601		860
602	void inline_size	861	inline_speed void
603	anfds_init (ANFD *base, int count)
604	{
605	while (count--)
606	{
607	base->head = 0;
608	base->events = EV_NONE;
609	base->reify = 0;
610
611	++base;
612	}
613	}
614
615	void inline_speed
616	fd_event (EV_P_ int fd, int revents)	862	fd_event_nc (EV_P_ int fd, int revents)
617	{	863	{
618	ANFD *anfd = anfds + fd;	864	ANFD *anfd = anfds + fd;
619	ev_io *w;	865	ev_io *w;
620		866
621	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)
…		…
625	if (ev)	871	if (ev)
626	ev_feed_event (EV_A_ (W)w, ev);	872	ev_feed_event (EV_A_ (W)w, ev);
627	}	873	}
628	}	874	}
629		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
630	void	887	void
631	ev_feed_fd_event (EV_P_ int fd, int revents)	888	ev_feed_fd_event (EV_P_ int fd, int revents)
632	{	889	{
633	if (fd >= 0 && fd < anfdmax)	890	if (fd >= 0 && fd < anfdmax)
634	fd_event (EV_A_ fd, revents);	891	fd_event_nc (EV_A_ fd, revents);
635	}	892	}
636		893
637	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
638	fd_reify (EV_P)	897	fd_reify (EV_P)
639	{	898	{
640	int i;	899	int i;
641		900
642	for (i = 0; i < fdchangecnt; ++i)	901	for (i = 0; i < fdchangecnt; ++i)
…		…
651	events |= (unsigned char)w->events;	910	events |= (unsigned char)w->events;
652		911
653	#if EV_SELECT_IS_WINSOCKET	912	#if EV_SELECT_IS_WINSOCKET
654	if (events)	913	if (events)
655	{	914	{
656	unsigned long argp;	915	unsigned long arg;
657	#ifdef EV_FD_TO_WIN32_HANDLE
658	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	916	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
659	#else
660	anfd->handle = _get_osfhandle (fd);
661	#endif
662	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));
663	}	918	}
664	#endif	919	#endif
665		920
666	{	921	{
667	unsigned char o_events = anfd->events;	922	unsigned char o_events = anfd->events;
668	unsigned char o_reify = anfd->reify;	923	unsigned char o_reify = anfd->reify;
669		924
670	anfd->reify = 0;	925	anfd->reify = 0;
671	anfd->events = events;	926	anfd->events = events;
672		927
673	if (o_events != events || o_reify & EV_IOFDSET)	928	if (o_events != events || o_reify & EV__IOFDSET)
674	backend_modify (EV_A_ fd, o_events, events);	929	backend_modify (EV_A_ fd, o_events, events);
675	}	930	}
676	}	931	}
677		932
678	fdchangecnt = 0;	933	fdchangecnt = 0;
679	}	934	}
680		935
681	void inline_size	936	/* something about the given fd changed */
		937	inline_size void
682	fd_change (EV_P_ int fd, int flags)	938	fd_change (EV_P_ int fd, int flags)
683	{	939	{
684	unsigned char reify = anfds [fd].reify;	940	unsigned char reify = anfds [fd].reify;
685	anfds [fd].reify |= flags;	941	anfds [fd].reify |= flags;
686		942
…		…
690	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	946	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
691	fdchanges [fdchangecnt - 1] = fd;	947	fdchanges [fdchangecnt - 1] = fd;
692	}	948	}
693	}	949	}
694		950
695	void inline_speed	951	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		952	inline_speed void
696	fd_kill (EV_P_ int fd)	953	fd_kill (EV_P_ int fd)
697	{	954	{
698	ev_io *w;	955	ev_io *w;
699		956
700	while ((w = (ev_io *)anfds [fd].head))	957	while ((w = (ev_io *)anfds [fd].head))
…		…
702	ev_io_stop (EV_A_ w);	959	ev_io_stop (EV_A_ w);
703	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);
704	}	961	}
705	}	962	}
706		963
707	int inline_size	964	/* check whether the given fd is atcually valid, for error recovery */
		965	inline_size int
708	fd_valid (int fd)	966	fd_valid (int fd)
709	{	967	{
710	#ifdef _WIN32	968	#ifdef _WIN32
711	return _get_osfhandle (fd) != -1;	969	return _get_osfhandle (fd) != -1;
712	#else	970	#else
…		…
720	{	978	{
721	int fd;	979	int fd;
722		980
723	for (fd = 0; fd < anfdmax; ++fd)	981	for (fd = 0; fd < anfdmax; ++fd)
724	if (anfds [fd].events)	982	if (anfds [fd].events)
725	if (!fd_valid (fd) == -1 && errno == EBADF)	983	if (!fd_valid (fd) && errno == EBADF)
726	fd_kill (EV_A_ fd);	984	fd_kill (EV_A_ fd);
727	}	985	}
728		986
729	/* 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 */
730	static void noinline	988	static void noinline
…		…
734		992
735	for (fd = anfdmax; fd--; )	993	for (fd = anfdmax; fd--; )
736	if (anfds [fd].events)	994	if (anfds [fd].events)
737	{	995	{
738	fd_kill (EV_A_ fd);	996	fd_kill (EV_A_ fd);
739	return;	997	break;
740	}	998	}
741	}	999	}
742		1000
743	/* 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 */
744	static void noinline	1002	static void noinline
…		…
748		1006
749	for (fd = 0; fd < anfdmax; ++fd)	1007	for (fd = 0; fd < anfdmax; ++fd)
750	if (anfds [fd].events)	1008	if (anfds [fd].events)
751	{	1009	{
752	anfds [fd].events = 0;	1010	anfds [fd].events = 0;
		1011	anfds [fd].emask = 0;
753	fd_change (EV_A_ fd, EV_IOFDSET | 1);	1012	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
754	}	1013	}
755	}	1014	}
756		1015
757	/*****************************************************************************/	1016	/*****************************************************************************/
758		1017
759	void inline_speed	1018	/*
760	upheap (WT *heap, int k)	1019	* the heap functions want a real array index. array index 0 uis guaranteed to not
761	{	1020	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
762	WT w = heap [k];	1021	* the branching factor of the d-tree.
		1022	*/
763		1023
764	while (k)	1024	/*
765	{	1025	* at the moment we allow libev the luxury of two heaps,
766	int p = (k - 1) >> 1;	1026	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		1027	* which is more cache-efficient.
		1028	* the difference is about 5% with 50000+ watchers.
		1029	*/
		1030	#if EV_USE_4HEAP
767		1031
768	if (heap [p]->at <= w->at)	1032	#define DHEAP 4
		1033	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		1034	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		1035	#define UPHEAP_DONE(p,k) ((p) == (k))
		1036
		1037	/* away from the root */
		1038	inline_speed void
		1039	downheap (ANHE *heap, int N, int k)
		1040	{
		1041	ANHE he = heap [k];
		1042	ANHE *E = heap + N + HEAP0;
		1043
		1044	for (;;)
		1045	{
		1046	ev_tstamp minat;
		1047	ANHE *minpos;
		1048	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
		1049
		1050	/* find minimum child */
		1051	if (expect_true (pos + DHEAP - 1 < E))
		1052	{
		1053	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1054	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1055	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1056	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1057	}
		1058	else if (pos < E)
		1059	{
		1060	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1061	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1062	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1063	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1064	}
		1065	else
769	break;	1066	break;
770		1067
		1068	if (ANHE_at (he) <= minat)
		1069	break;
		1070
		1071	heap [k] = *minpos;
		1072	ev_active (ANHE_w (*minpos)) = k;
		1073
		1074	k = minpos - heap;
		1075	}
		1076
		1077	heap [k] = he;
		1078	ev_active (ANHE_w (he)) = k;
		1079	}
		1080
		1081	#else /* 4HEAP */
		1082
		1083	#define HEAP0 1
		1084	#define HPARENT(k) ((k) >> 1)
		1085	#define UPHEAP_DONE(p,k) (!(p))
		1086
		1087	/* away from the root */
		1088	inline_speed void
		1089	downheap (ANHE *heap, int N, int k)
		1090	{
		1091	ANHE he = heap [k];
		1092
		1093	for (;;)
		1094	{
		1095	int c = k << 1;
		1096
		1097	if (c >= N + HEAP0)
		1098	break;
		1099
		1100	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		1101	? 1 : 0;
		1102
		1103	if (ANHE_at (he) <= ANHE_at (heap [c]))
		1104	break;
		1105
		1106	heap [k] = heap [c];
		1107	ev_active (ANHE_w (heap [k])) = k;
		1108
		1109	k = c;
		1110	}
		1111
		1112	heap [k] = he;
		1113	ev_active (ANHE_w (he)) = k;
		1114	}
		1115	#endif
		1116
		1117	/* towards the root */
		1118	inline_speed void
		1119	upheap (ANHE *heap, int k)
		1120	{
		1121	ANHE he = heap [k];
		1122
		1123	for (;;)
		1124	{
		1125	int p = HPARENT (k);
		1126
		1127	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1128	break;
		1129
771	heap [k] = heap [p];	1130	heap [k] = heap [p];
772	((W)heap [k])->active = k + 1;	1131	ev_active (ANHE_w (heap [k])) = k;
773	k = p;	1132	k = p;
774	}	1133	}
775		1134
776	heap [k] = w;	1135	heap [k] = he;
777	((W)heap [k])->active = k + 1;	1136	ev_active (ANHE_w (he)) = k;
778	}	1137	}
779		1138
780	void inline_speed	1139	/* move an element suitably so it is in a correct place */
781	downheap (WT *heap, int N, int k)	1140	inline_size void
782	{
783	WT w = heap [k];
784
785	for (;;)
786	{
787	int c = (k << 1) + 1;
788
789	if (c >= N)
790	break;
791
792	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
793	? 1 : 0;
794
795	if (w->at <= heap [c]->at)
796	break;
797
798	heap [k] = heap [c];
799	((W)heap [k])->active = k + 1;
800
801	k = c;
802	}
803
804	heap [k] = w;
805	((W)heap [k])->active = k + 1;
806	}
807
808	void inline_size
809	adjustheap (WT *heap, int N, int k)	1141	adjustheap (ANHE *heap, int N, int k)
810	{	1142	{
		1143	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
811	upheap (heap, k);	1144	upheap (heap, k);
		1145	else
812	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);
813	}	1159	}
814		1160
815	/*****************************************************************************/	1161	/*****************************************************************************/
816		1162
		1163	/* associate signal watchers to a signal signal */
817	typedef struct	1164	typedef struct
818	{	1165	{
		1166	EV_ATOMIC_T pending;
		1167	#if EV_MULTIPLICITY
		1168	EV_P;
		1169	#endif
819	WL head;	1170	WL head;
820	EV_ATOMIC_T gotsig;
821	} ANSIG;	1171	} ANSIG;
822		1172
823	static ANSIG *signals;	1173	static ANSIG signals [EV_NSIG - 1];
824	static int signalmax;
825
826	static EV_ATOMIC_T gotsig;
827
828	void inline_size
829	signals_init (ANSIG *base, int count)
830	{
831	while (count--)
832	{
833	base->head = 0;
834	base->gotsig = 0;
835
836	++base;
837	}
838	}
839		1174
840	/*****************************************************************************/	1175	/*****************************************************************************/
841		1176
842	void inline_speed	1177	/* used to prepare libev internal fd's */
		1178	/* this is not fork-safe */
		1179	inline_speed void
843	fd_intern (int fd)	1180	fd_intern (int fd)
844	{	1181	{
845	#ifdef _WIN32	1182	#ifdef _WIN32
846	int arg = 1;	1183	unsigned long arg = 1;
847	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1184	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
848	#else	1185	#else
849	fcntl (fd, F_SETFD, FD_CLOEXEC);	1186	fcntl (fd, F_SETFD, FD_CLOEXEC);
850	fcntl (fd, F_SETFL, O_NONBLOCK);	1187	fcntl (fd, F_SETFL, O_NONBLOCK);
851	#endif	1188	#endif
852	}	1189	}
853		1190
854	static void noinline	1191	static void noinline
855	evpipe_init (EV_P)	1192	evpipe_init (EV_P)
856	{	1193	{
857	if (!ev_is_active (&pipeev))	1194	if (!ev_is_active (&pipe_w))
858	{	1195	{
859	#if EV_USE_EVENTFD	1196	#if EV_USE_EVENTFD
		1197	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1198	if (evfd < 0 && errno == EINVAL)
860	if ((evfd = eventfd (0, 0)) >= 0)	1199	evfd = eventfd (0, 0);
		1200
		1201	if (evfd >= 0)
861	{	1202	{
862	evpipe [0] = -1;	1203	evpipe [0] = -1;
863	fd_intern (evfd);	1204	fd_intern (evfd); /* doing it twice doesn't hurt */
864	ev_io_set (&pipeev, evfd, EV_READ);	1205	ev_io_set (&pipe_w, evfd, EV_READ);
865	}	1206	}
866	else	1207	else
867	#endif	1208	#endif
868	{	1209	{
869	while (pipe (evpipe))	1210	while (pipe (evpipe))
870	syserr ("(libev) error creating signal/async pipe");	1211	ev_syserr ("(libev) error creating signal/async pipe");
871		1212
872	fd_intern (evpipe [0]);	1213	fd_intern (evpipe [0]);
873	fd_intern (evpipe [1]);	1214	fd_intern (evpipe [1]);
874	ev_io_set (&pipeev, evpipe [0], EV_READ);	1215	ev_io_set (&pipe_w, evpipe [0], EV_READ);
875	}	1216	}
876		1217
877	ev_io_start (EV_A_ &pipeev);	1218	ev_io_start (EV_A_ &pipe_w);
878	ev_unref (EV_A); /* watcher should not keep loop alive */	1219	ev_unref (EV_A); /* watcher should not keep loop alive */
879	}	1220	}
880	}	1221	}
881		1222
882	void inline_size	1223	inline_size void
883	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1224	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
884	{	1225	{
885	if (!*flag)	1226	if (!*flag)
886	{	1227	{
887	int old_errno = errno; /* save errno because write might clobber it */	1228	int old_errno = errno; /* save errno because write might clobber it */
…		…
900		1241
901	errno = old_errno;	1242	errno = old_errno;
902	}	1243	}
903	}	1244	}
904		1245
		1246	/* called whenever the libev signal pipe */
		1247	/* got some events (signal, async) */
905	static void	1248	static void
906	pipecb (EV_P_ ev_io *iow, int revents)	1249	pipecb (EV_P_ ev_io *iow, int revents)
907	{	1250	{
		1251	int i;
		1252
908	#if EV_USE_EVENTFD	1253	#if EV_USE_EVENTFD
909	if (evfd >= 0)	1254	if (evfd >= 0)
910	{	1255	{
911	uint64_t counter = 1;	1256	uint64_t counter;
912	read (evfd, &counter, sizeof (uint64_t));	1257	read (evfd, &counter, sizeof (uint64_t));
913	}	1258	}
914	else	1259	else
915	#endif	1260	#endif
916	{	1261	{
917	char dummy;	1262	char dummy;
918	read (evpipe [0], &dummy, 1);	1263	read (evpipe [0], &dummy, 1);
919	}	1264	}
920		1265
921	if (gotsig && ev_is_default_loop (EV_A))	1266	if (sig_pending)
922	{	1267	{
923	int signum;	1268	sig_pending = 0;
924	gotsig = 0;
925		1269
926	for (signum = signalmax; signum--; )	1270	for (i = EV_NSIG - 1; i--; )
927	if (signals [signum].gotsig)	1271	if (expect_false (signals [i].pending))
928	ev_feed_signal_event (EV_A_ signum + 1);	1272	ev_feed_signal_event (EV_A_ i + 1);
929	}	1273	}
930		1274
931	#if EV_ASYNC_ENABLE	1275	#if EV_ASYNC_ENABLE
932	if (gotasync)	1276	if (async_pending)
933	{	1277	{
934	int i;	1278	async_pending = 0;
935	gotasync = 0;
936		1279
937	for (i = asynccnt; i--; )	1280	for (i = asynccnt; i--; )
938	if (asyncs [i]->sent)	1281	if (asyncs [i]->sent)
939	{	1282	{
940	asyncs [i]->sent = 0;	1283	asyncs [i]->sent = 0;
…		…
948		1291
949	static void	1292	static void
950	ev_sighandler (int signum)	1293	ev_sighandler (int signum)
951	{	1294	{
952	#if EV_MULTIPLICITY	1295	#if EV_MULTIPLICITY
953	struct ev_loop *loop = &default_loop_struct;	1296	EV_P = signals [signum - 1].loop;
954	#endif	1297	#endif
955		1298
956	#if _WIN32	1299	#if _WIN32
957	signal (signum, ev_sighandler);	1300	signal (signum, ev_sighandler);
958	#endif	1301	#endif
959		1302
960	signals [signum - 1].gotsig = 1;	1303	signals [signum - 1].pending = 1;
961	evpipe_write (EV_A_ &gotsig);	1304	evpipe_write (EV_A_ &sig_pending);
962	}	1305	}
963		1306
964	void noinline	1307	void noinline
965	ev_feed_signal_event (EV_P_ int signum)	1308	ev_feed_signal_event (EV_P_ int signum)
966	{	1309	{
967	WL w;	1310	WL w;
968		1311
		1312	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1313	return;
		1314
		1315	--signum;
		1316
969	#if EV_MULTIPLICITY	1317	#if EV_MULTIPLICITY
970	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 */
971	#endif	1319	/* or, likely more useful, feeding a signal nobody is waiting for */
972		1320
973	--signum;	1321	if (expect_false (signals [signum].loop != EV_A))
974
975	if (signum < 0 || signum >= signalmax)
976	return;	1322	return;
		1323	#endif
977		1324
978	signals [signum].gotsig = 0;	1325	signals [signum].pending = 0;
979		1326
980	for (w = signals [signum].head; w; w = w->next)	1327	for (w = signals [signum].head; w; w = w->next)
981	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1328	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
982	}	1329	}
983		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
984	/*****************************************************************************/	1351	/*****************************************************************************/
985		1352
986	static WL childs [EV_PID_HASHSIZE];	1353	static WL childs [EV_PID_HASHSIZE];
987		1354
988	#ifndef _WIN32	1355	#ifndef _WIN32
…		…
991		1358
992	#ifndef WIFCONTINUED	1359	#ifndef WIFCONTINUED
993	# define WIFCONTINUED(status) 0	1360	# define WIFCONTINUED(status) 0
994	#endif	1361	#endif
995		1362
996	void inline_speed	1363	/* handle a single child status event */
		1364	inline_speed void
997	child_reap (EV_P_ int chain, int pid, int status)	1365	child_reap (EV_P_ int chain, int pid, int status)
998	{	1366	{
999	ev_child *w;	1367	ev_child *w;
1000	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1368	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1001		1369
…		…
1014		1382
1015	#ifndef WCONTINUED	1383	#ifndef WCONTINUED
1016	# define WCONTINUED 0	1384	# define WCONTINUED 0
1017	#endif	1385	#endif
1018		1386
		1387	/* called on sigchld etc., calls waitpid */
1019	static void	1388	static void
1020	childcb (EV_P_ ev_signal *sw, int revents)	1389	childcb (EV_P_ ev_signal *sw, int revents)
1021	{	1390	{
1022	int pid, status;	1391	int pid, status;
1023		1392
…		…
1104	/* kqueue is borked on everything but netbsd apparently */	1473	/* kqueue is borked on everything but netbsd apparently */
1105	/* 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 */
1106	flags &= ~EVBACKEND_KQUEUE;	1475	flags &= ~EVBACKEND_KQUEUE;
1107	#endif	1476	#endif
1108	#ifdef __APPLE__	1477	#ifdef __APPLE__
1109	// flags &= ~EVBACKEND_KQUEUE; for documentation	1478	/* only select works correctly on that "unix-certified" platform */
1110	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 */
1111	#endif	1481	#endif
1112		1482
1113	return flags;	1483	return flags;
1114	}	1484	}
1115		1485
…		…
1129	ev_backend (EV_P)	1499	ev_backend (EV_P)
1130	{	1500	{
1131	return backend;	1501	return backend;
1132	}	1502	}
1133		1503
		1504	#if EV_MINIMAL < 2
1134	unsigned int	1505	unsigned int
1135	ev_loop_count (EV_P)	1506	ev_loop_count (EV_P)
1136	{	1507	{
1137	return loop_count;	1508	return loop_count;
1138	}	1509	}
1139		1510
		1511	unsigned int
		1512	ev_loop_depth (EV_P)
		1513	{
		1514	return loop_depth;
		1515	}
		1516
1140	void	1517	void
1141	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1518	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1142	{	1519	{
1143	io_blocktime = interval;	1520	io_blocktime = interval;
1144	}	1521	}
…		…
1147	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1524	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1148	{	1525	{
1149	timeout_blocktime = interval;	1526	timeout_blocktime = interval;
1150	}	1527	}
1151		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 */
1152	static void noinline	1554	static void noinline
1153	loop_init (EV_P_ unsigned int flags)	1555	loop_init (EV_P_ unsigned int flags)
1154	{	1556	{
1155	if (!backend)	1557	if (!backend)
1156	{	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
1157	#if EV_USE_MONOTONIC	1569	#if EV_USE_MONOTONIC
		1570	if (!have_monotonic)
1158	{	1571	{
1159	struct timespec ts;	1572	struct timespec ts;
		1573
1160	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1574	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1161	have_monotonic = 1;	1575	have_monotonic = 1;
1162	}	1576	}
1163	#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"));
1164		1589
1165	ev_rt_now = ev_time ();	1590	ev_rt_now = ev_time ();
1166	mn_now = get_clock ();	1591	mn_now = get_clock ();
1167	now_floor = mn_now;	1592	now_floor = mn_now;
1168	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
1169		1597
1170	io_blocktime = 0.;	1598	io_blocktime = 0.;
1171	timeout_blocktime = 0.;	1599	timeout_blocktime = 0.;
1172	backend = 0;	1600	backend = 0;
1173	backend_fd = -1;	1601	backend_fd = -1;
1174	gotasync = 0;	1602	sig_pending = 0;
		1603	#if EV_ASYNC_ENABLE
		1604	async_pending = 0;
		1605	#endif
1175	#if EV_USE_INOTIFY	1606	#if EV_USE_INOTIFY
1176	fs_fd = -2;	1607	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1177	#endif	1608	#endif
1178		1609	#if EV_USE_SIGNALFD
1179	/* pid check not overridable via env */	1610	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1180	#ifndef _WIN32
1181	if (flags & EVFLAG_FORKCHECK)
1182	curpid = getpid ();
1183	#endif	1611	#endif
1184		1612
1185	if (!(flags & EVFLAG_NOENV)
1186	&& !enable_secure ()
1187	&& getenv ("LIBEV_FLAGS"))
1188	flags = atoi (getenv ("LIBEV_FLAGS"));
1189
1190	if (!(flags & 0x0000ffffUL))	1613	if (!(flags & 0x0000ffffU))
1191	flags |= ev_recommended_backends ();	1614	flags |= ev_recommended_backends ();
1192		1615
1193	#if EV_USE_PORT	1616	#if EV_USE_PORT
1194	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1617	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1195	#endif	1618	#endif
…		…
1204	#endif	1627	#endif
1205	#if EV_USE_SELECT	1628	#if EV_USE_SELECT
1206	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1629	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1207	#endif	1630	#endif
1208		1631
		1632	ev_prepare_init (&pending_w, pendingcb);
		1633
1209	ev_init (&pipeev, pipecb);	1634	ev_init (&pipe_w, pipecb);
1210	ev_set_priority (&pipeev, EV_MAXPRI);	1635	ev_set_priority (&pipe_w, EV_MAXPRI);
1211	}	1636	}
1212	}	1637	}
1213		1638
		1639	/* free up a loop structure */
1214	static void noinline	1640	static void noinline
1215	loop_destroy (EV_P)	1641	loop_destroy (EV_P)
1216	{	1642	{
1217	int i;	1643	int i;
1218		1644
1219	if (ev_is_active (&pipeev))	1645	if (ev_is_active (&pipe_w))
1220	{	1646	{
1221	ev_ref (EV_A); /* signal watcher */	1647	/*ev_ref (EV_A);*/
1222	ev_io_stop (EV_A_ &pipeev);	1648	/*ev_io_stop (EV_A_ &pipe_w);*/
1223		1649
1224	#if EV_USE_EVENTFD	1650	#if EV_USE_EVENTFD
1225	if (evfd >= 0)	1651	if (evfd >= 0)
1226	close (evfd);	1652	close (evfd);
1227	#endif	1653	#endif
1228		1654
1229	if (evpipe [0] >= 0)	1655	if (evpipe [0] >= 0)
1230	{	1656	{
1231	close (evpipe [0]);	1657	EV_WIN32_CLOSE_FD (evpipe [0]);
1232	close (evpipe [1]);	1658	EV_WIN32_CLOSE_FD (evpipe [1]);
1233	}	1659	}
1234	}	1660	}
		1661
		1662	#if EV_USE_SIGNALFD
		1663	if (ev_is_active (&sigfd_w))
		1664	close (sigfd);
		1665	#endif
1235		1666
1236	#if EV_USE_INOTIFY	1667	#if EV_USE_INOTIFY
1237	if (fs_fd >= 0)	1668	if (fs_fd >= 0)
1238	close (fs_fd);	1669	close (fs_fd);
1239	#endif	1670	#endif
…		…
1263	#if EV_IDLE_ENABLE	1694	#if EV_IDLE_ENABLE
1264	array_free (idle, [i]);	1695	array_free (idle, [i]);
1265	#endif	1696	#endif
1266	}	1697	}
1267		1698
1268	ev_free (anfds); anfdmax = 0;	1699	ev_free (anfds); anfds = 0; anfdmax = 0;
1269		1700
1270	/* 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);
1271	array_free (fdchange, EMPTY);	1703	array_free (fdchange, EMPTY);
1272	array_free (timer, EMPTY);	1704	array_free (timer, EMPTY);
1273	#if EV_PERIODIC_ENABLE	1705	#if EV_PERIODIC_ENABLE
1274	array_free (periodic, EMPTY);	1706	array_free (periodic, EMPTY);
1275	#endif	1707	#endif
…		…
1283	#endif	1715	#endif
1284		1716
1285	backend = 0;	1717	backend = 0;
1286	}	1718	}
1287		1719
		1720	#if EV_USE_INOTIFY
1288	void inline_size infy_fork (EV_P);	1721	inline_size void infy_fork (EV_P);
		1722	#endif
1289		1723
1290	void inline_size	1724	inline_size void
1291	loop_fork (EV_P)	1725	loop_fork (EV_P)
1292	{	1726	{
1293	#if EV_USE_PORT	1727	#if EV_USE_PORT
1294	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1728	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1295	#endif	1729	#endif
…		…
1301	#endif	1735	#endif
1302	#if EV_USE_INOTIFY	1736	#if EV_USE_INOTIFY
1303	infy_fork (EV_A);	1737	infy_fork (EV_A);
1304	#endif	1738	#endif
1305		1739
1306	if (ev_is_active (&pipeev))	1740	if (ev_is_active (&pipe_w))
1307	{	1741	{
1308	/* this "locks" the handlers against writing to the pipe */	1742	/* this "locks" the handlers against writing to the pipe */
1309	/* while we modify the fd vars */	1743	/* while we modify the fd vars */
1310	gotsig = 1;	1744	sig_pending = 1;
1311	#if EV_ASYNC_ENABLE	1745	#if EV_ASYNC_ENABLE
1312	gotasync = 1;	1746	async_pending = 1;
1313	#endif	1747	#endif
1314		1748
1315	ev_ref (EV_A);	1749	ev_ref (EV_A);
1316	ev_io_stop (EV_A_ &pipeev);	1750	ev_io_stop (EV_A_ &pipe_w);
1317		1751
1318	#if EV_USE_EVENTFD	1752	#if EV_USE_EVENTFD
1319	if (evfd >= 0)	1753	if (evfd >= 0)
1320	close (evfd);	1754	close (evfd);
1321	#endif	1755	#endif
1322		1756
1323	if (evpipe [0] >= 0)	1757	if (evpipe [0] >= 0)
1324	{	1758	{
1325	close (evpipe [0]);	1759	EV_WIN32_CLOSE_FD (evpipe [0]);
1326	close (evpipe [1]);	1760	EV_WIN32_CLOSE_FD (evpipe [1]);
1327	}	1761	}
1328		1762
1329	evpipe_init (EV_A);	1763	evpipe_init (EV_A);
1330	/* now iterate over everything, in case we missed something */	1764	/* now iterate over everything, in case we missed something */
1331	pipecb (EV_A_ &pipeev, EV_READ);	1765	pipecb (EV_A_ &pipe_w, EV_READ);
1332	}	1766	}
1333		1767
1334	postfork = 0;	1768	postfork = 0;
1335	}	1769	}
1336		1770
1337	#if EV_MULTIPLICITY	1771	#if EV_MULTIPLICITY
		1772
1338	struct ev_loop *	1773	struct ev_loop *
1339	ev_loop_new (unsigned int flags)	1774	ev_loop_new (unsigned int flags)
1340	{	1775	{
1341	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));
1342		1777
1343	memset (loop, 0, sizeof (struct ev_loop));	1778	memset (EV_A, 0, sizeof (struct ev_loop));
1344
1345	loop_init (EV_A_ flags);	1779	loop_init (EV_A_ flags);
1346		1780
1347	if (ev_backend (EV_A))	1781	if (ev_backend (EV_A))
1348	return loop;	1782	return EV_A;
1349		1783
1350	return 0;	1784	return 0;
1351	}	1785	}
1352		1786
1353	void	1787	void
…		…
1360	void	1794	void
1361	ev_loop_fork (EV_P)	1795	ev_loop_fork (EV_P)
1362	{	1796	{
1363	postfork = 1; /* must be in line with ev_default_fork */	1797	postfork = 1; /* must be in line with ev_default_fork */
1364	}	1798	}
		1799	#endif /* multiplicity */
1365		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	}
1366	#endif	1900	#endif
1367		1901
1368	#if EV_MULTIPLICITY	1902	#if EV_MULTIPLICITY
1369	struct ev_loop *	1903	struct ev_loop *
1370	ev_default_loop_init (unsigned int flags)	1904	ev_default_loop_init (unsigned int flags)
…		…
1374	#endif	1908	#endif
1375	{	1909	{
1376	if (!ev_default_loop_ptr)	1910	if (!ev_default_loop_ptr)
1377	{	1911	{
1378	#if EV_MULTIPLICITY	1912	#if EV_MULTIPLICITY
1379	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1913	EV_P = ev_default_loop_ptr = &default_loop_struct;
1380	#else	1914	#else
1381	ev_default_loop_ptr = 1;	1915	ev_default_loop_ptr = 1;
1382	#endif	1916	#endif
1383		1917
1384	loop_init (EV_A_ flags);	1918	loop_init (EV_A_ flags);
…		…
1401		1935
1402	void	1936	void
1403	ev_default_destroy (void)	1937	ev_default_destroy (void)
1404	{	1938	{
1405	#if EV_MULTIPLICITY	1939	#if EV_MULTIPLICITY
1406	struct ev_loop *loop = ev_default_loop_ptr;	1940	EV_P = ev_default_loop_ptr;
1407	#endif	1941	#endif
		1942
		1943	ev_default_loop_ptr = 0;
1408		1944
1409	#ifndef _WIN32	1945	#ifndef _WIN32
1410	ev_ref (EV_A); /* child watcher */	1946	ev_ref (EV_A); /* child watcher */
1411	ev_signal_stop (EV_A_ &childev);	1947	ev_signal_stop (EV_A_ &childev);
1412	#endif	1948	#endif
…		…
1416		1952
1417	void	1953	void
1418	ev_default_fork (void)	1954	ev_default_fork (void)
1419	{	1955	{
1420	#if EV_MULTIPLICITY	1956	#if EV_MULTIPLICITY
1421	struct ev_loop *loop = ev_default_loop_ptr;	1957	EV_P = ev_default_loop_ptr;
1422	#endif	1958	#endif
1423		1959
1424	if (backend)
1425	postfork = 1; /* must be in line with ev_loop_fork */	1960	postfork = 1; /* must be in line with ev_loop_fork */
1426	}	1961	}
1427		1962
1428	/*****************************************************************************/	1963	/*****************************************************************************/
1429		1964
1430	void	1965	void
1431	ev_invoke (EV_P_ void *w, int revents)	1966	ev_invoke (EV_P_ void *w, int revents)
1432	{	1967	{
1433	EV_CB_INVOKE ((W)w, revents);	1968	EV_CB_INVOKE ((W)w, revents);
1434	}	1969	}
1435		1970
1436	void inline_speed	1971	unsigned int
1437	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)
1438	{	1985	{
1439	int pri;	1986	int pri;
1440		1987
1441	for (pri = NUMPRI; pri--; )	1988	for (pri = NUMPRI; pri--; )
1442	while (pendingcnt [pri])	1989	while (pendingcnt [pri])
1443	{	1990	{
1444	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1991	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1445		1992
1446	if (expect_true (p->w))
1447	{
1448	/*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 */
1449		1995
1450	p->w->pending = 0;	1996	p->w->pending = 0;
1451	EV_CB_INVOKE (p->w, p->events);	1997	EV_CB_INVOKE (p->w, p->events);
1452	}	1998	EV_FREQUENT_CHECK;
1453	}	1999	}
1454	}	2000	}
1455		2001
1456	void inline_size
1457	timers_reify (EV_P)
1458	{
1459	while (timercnt && ((WT)timers [0])->at <= mn_now)
1460	{
1461	ev_timer *w = (ev_timer *)timers [0];
1462
1463	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1464
1465	/* first reschedule or stop timer */
1466	if (w->repeat)
1467	{
1468	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1469
1470	((WT)w)->at += w->repeat;
1471	if (((WT)w)->at < mn_now)
1472	((WT)w)->at = mn_now;
1473
1474	downheap (timers, timercnt, 0);
1475	}
1476	else
1477	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1478
1479	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1480	}
1481	}
1482
1483	#if EV_PERIODIC_ENABLE
1484	void inline_size
1485	periodics_reify (EV_P)
1486	{
1487	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1488	{
1489	ev_periodic *w = (ev_periodic *)periodics [0];
1490
1491	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1492
1493	/* first reschedule or stop timer */
1494	if (w->reschedule_cb)
1495	{
1496	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1497	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1498	downheap (periodics, periodiccnt, 0);
1499	}
1500	else if (w->interval)
1501	{
1502	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1503	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1504	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1505	downheap (periodics, periodiccnt, 0);
1506	}
1507	else
1508	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1509
1510	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1511	}
1512	}
1513
1514	static void noinline
1515	periodics_reschedule (EV_P)
1516	{
1517	int i;
1518
1519	/* adjust periodics after time jump */
1520	for (i = 0; i < periodiccnt; ++i)
1521	{
1522	ev_periodic *w = (ev_periodic *)periodics [i];
1523
1524	if (w->reschedule_cb)
1525	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1526	else if (w->interval)
1527	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1528	}
1529
1530	/* now rebuild the heap */
1531	for (i = periodiccnt >> 1; i--; )
1532	downheap (periodics, periodiccnt, i);
1533	}
1534	#endif
1535
1536	#if EV_IDLE_ENABLE	2002	#if EV_IDLE_ENABLE
1537	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
1538	idle_reify (EV_P)	2006	idle_reify (EV_P)
1539	{	2007	{
1540	if (expect_false (idleall))	2008	if (expect_false (idleall))
1541	{	2009	{
1542	int pri;	2010	int pri;
…		…
1554	}	2022	}
1555	}	2023	}
1556	}	2024	}
1557	#endif	2025	#endif
1558		2026
1559	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
1560	time_update (EV_P_ ev_tstamp max_block)	2164	time_update (EV_P_ ev_tstamp max_block)
1561	{	2165	{
1562	int i;
1563
1564	#if EV_USE_MONOTONIC	2166	#if EV_USE_MONOTONIC
1565	if (expect_true (have_monotonic))	2167	if (expect_true (have_monotonic))
1566	{	2168	{
		2169	int i;
1567	ev_tstamp odiff = rtmn_diff;	2170	ev_tstamp odiff = rtmn_diff;
1568		2171
1569	mn_now = get_clock ();	2172	mn_now = get_clock ();
1570		2173
1571	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2174	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1589	*/	2192	*/
1590	for (i = 4; --i; )	2193	for (i = 4; --i; )
1591	{	2194	{
1592	rtmn_diff = ev_rt_now - mn_now;	2195	rtmn_diff = ev_rt_now - mn_now;
1593		2196
1594	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	2197	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1595	return; /* all is well */	2198	return; /* all is well */
1596		2199
1597	ev_rt_now = ev_time ();	2200	ev_rt_now = ev_time ();
1598	mn_now = get_clock ();	2201	mn_now = get_clock ();
1599	now_floor = mn_now;	2202	now_floor = mn_now;
1600	}	2203	}
1601		2204
		2205	/* no timer adjustment, as the monotonic clock doesn't jump */
		2206	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1602	# if EV_PERIODIC_ENABLE	2207	# if EV_PERIODIC_ENABLE
1603	periodics_reschedule (EV_A);	2208	periodics_reschedule (EV_A);
1604	# endif	2209	# endif
1605	/* no timer adjustment, as the monotonic clock doesn't jump */
1606	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1607	}	2210	}
1608	else	2211	else
1609	#endif	2212	#endif
1610	{	2213	{
1611	ev_rt_now = ev_time ();	2214	ev_rt_now = ev_time ();
1612		2215
1613	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))
1614	{	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);
1615	#if EV_PERIODIC_ENABLE	2220	#if EV_PERIODIC_ENABLE
1616	periodics_reschedule (EV_A);	2221	periodics_reschedule (EV_A);
1617	#endif	2222	#endif
1618	/* adjust timers. this is easy, as the offset is the same for all of them */
1619	for (i = 0; i < timercnt; ++i)
1620	((WT)timers [i])->at += ev_rt_now - mn_now;
1621	}	2223	}
1622		2224
1623	mn_now = ev_rt_now;	2225	mn_now = ev_rt_now;
1624	}	2226	}
1625	}	2227	}
1626		2228
1627	void	2229	void
1628	ev_ref (EV_P)
1629	{
1630	++activecnt;
1631	}
1632
1633	void
1634	ev_unref (EV_P)
1635	{
1636	--activecnt;
1637	}
1638
1639	static int loop_done;
1640
1641	void
1642	ev_loop (EV_P_ int flags)	2230	ev_loop (EV_P_ int flags)
1643	{	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
1644	loop_done = EVUNLOOP_CANCEL;	2238	loop_done = EVUNLOOP_CANCEL;
1645		2239
1646	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 */
1647		2241
1648	do	2242	do
1649	{	2243	{
		2244	#if EV_VERIFY >= 2
		2245	ev_loop_verify (EV_A);
		2246	#endif
		2247
1650	#ifndef _WIN32	2248	#ifndef _WIN32
1651	if (expect_false (curpid)) /* penalise the forking check even more */	2249	if (expect_false (curpid)) /* penalise the forking check even more */
1652	if (expect_false (getpid () != curpid))	2250	if (expect_false (getpid () != curpid))
1653	{	2251	{
1654	curpid = getpid ();	2252	curpid = getpid ();
…		…
1660	/* we might have forked, so queue fork handlers */	2258	/* we might have forked, so queue fork handlers */
1661	if (expect_false (postfork))	2259	if (expect_false (postfork))
1662	if (forkcnt)	2260	if (forkcnt)
1663	{	2261	{
1664	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2262	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1665	call_pending (EV_A);	2263	EV_INVOKE_PENDING;
1666	}	2264	}
1667	#endif	2265	#endif
1668		2266
1669	/* queue prepare watchers (and execute them) */	2267	/* queue prepare watchers (and execute them) */
1670	if (expect_false (preparecnt))	2268	if (expect_false (preparecnt))
1671	{	2269	{
1672	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2270	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1673	call_pending (EV_A);	2271	EV_INVOKE_PENDING;
1674	}	2272	}
1675		2273
1676	if (expect_false (!activecnt))	2274	if (expect_false (loop_done))
1677	break;	2275	break;
1678		2276
1679	/* we might have forked, so reify kernel state if necessary */	2277	/* we might have forked, so reify kernel state if necessary */
1680	if (expect_false (postfork))	2278	if (expect_false (postfork))
1681	loop_fork (EV_A);	2279	loop_fork (EV_A);
…		…
1688	ev_tstamp waittime = 0.;	2286	ev_tstamp waittime = 0.;
1689	ev_tstamp sleeptime = 0.;	2287	ev_tstamp sleeptime = 0.;
1690		2288
1691	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2289	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1692	{	2290	{
		2291	/* remember old timestamp for io_blocktime calculation */
		2292	ev_tstamp prev_mn_now = mn_now;
		2293
1693	/* update time to cancel out callback processing overhead */	2294	/* update time to cancel out callback processing overhead */
1694	time_update (EV_A_ 1e100);	2295	time_update (EV_A_ 1e100);
1695		2296
1696	waittime = MAX_BLOCKTIME;	2297	waittime = MAX_BLOCKTIME;
1697		2298
1698	if (timercnt)	2299	if (timercnt)
1699	{	2300	{
1700	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	2301	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1701	if (waittime > to) waittime = to;	2302	if (waittime > to) waittime = to;
1702	}	2303	}
1703		2304
1704	#if EV_PERIODIC_ENABLE	2305	#if EV_PERIODIC_ENABLE
1705	if (periodiccnt)	2306	if (periodiccnt)
1706	{	2307	{
1707	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	2308	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1708	if (waittime > to) waittime = to;	2309	if (waittime > to) waittime = to;
1709	}	2310	}
1710	#endif	2311	#endif
1711		2312
		2313	/* don't let timeouts decrease the waittime below timeout_blocktime */
1712	if (expect_false (waittime < timeout_blocktime))	2314	if (expect_false (waittime < timeout_blocktime))
1713	waittime = timeout_blocktime;	2315	waittime = timeout_blocktime;
1714		2316
1715	sleeptime = waittime - backend_fudge;	2317	/* extra check because io_blocktime is commonly 0 */
1716
1717	if (expect_true (sleeptime > io_blocktime))	2318	if (expect_false (io_blocktime))
1718	sleeptime = io_blocktime;
1719
1720	if (sleeptime)
1721	{	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	{
1722	ev_sleep (sleeptime);	2327	ev_sleep (sleeptime);
1723	waittime -= sleeptime;	2328	waittime -= sleeptime;
		2329	}
1724	}	2330	}
1725	}	2331	}
1726		2332
		2333	#if EV_MINIMAL < 2
1727	++loop_count;	2334	++loop_count;
		2335	#endif
		2336	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1728	backend_poll (EV_A_ waittime);	2337	backend_poll (EV_A_ waittime);
		2338	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1729		2339
1730	/* update ev_rt_now, do magic */	2340	/* update ev_rt_now, do magic */
1731	time_update (EV_A_ waittime + sleeptime);	2341	time_update (EV_A_ waittime + sleeptime);
1732	}	2342	}
1733		2343
…		…
1744		2354
1745	/* queue check watchers, to be executed first */	2355	/* queue check watchers, to be executed first */
1746	if (expect_false (checkcnt))	2356	if (expect_false (checkcnt))
1747	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2357	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1748		2358
1749	call_pending (EV_A);	2359	EV_INVOKE_PENDING;
1750	}	2360	}
1751	while (expect_true (	2361	while (expect_true (
1752	activecnt	2362	activecnt
1753	&& !loop_done	2363	&& !loop_done
1754	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2364	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1755	));	2365	));
1756		2366
1757	if (loop_done == EVUNLOOP_ONE)	2367	if (loop_done == EVUNLOOP_ONE)
1758	loop_done = EVUNLOOP_CANCEL;	2368	loop_done = EVUNLOOP_CANCEL;
		2369
		2370	#if EV_MINIMAL < 2
		2371	--loop_depth;
		2372	#endif
1759	}	2373	}
1760		2374
1761	void	2375	void
1762	ev_unloop (EV_P_ int how)	2376	ev_unloop (EV_P_ int how)
1763	{	2377	{
1764	loop_done = how;	2378	loop_done = how;
1765	}	2379	}
1766		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
1767	/*****************************************************************************/	2418	/*****************************************************************************/
		2419	/* singly-linked list management, used when the expected list length is short */
1768		2420
1769	void inline_size	2421	inline_size void
1770	wlist_add (WL *head, WL elem)	2422	wlist_add (WL *head, WL elem)
1771	{	2423	{
1772	elem->next = *head;	2424	elem->next = *head;
1773	*head = elem;	2425	*head = elem;
1774	}	2426	}
1775		2427
1776	void inline_size	2428	inline_size void
1777	wlist_del (WL *head, WL elem)	2429	wlist_del (WL *head, WL elem)
1778	{	2430	{
1779	while (*head)	2431	while (*head)
1780	{	2432	{
1781	if (*head == elem)	2433	if (expect_true (*head == elem))
1782	{	2434	{
1783	*head = elem->next;	2435	*head = elem->next;
1784	return;	2436	break;
1785	}	2437	}
1786		2438
1787	head = &(*head)->next;	2439	head = &(*head)->next;
1788	}	2440	}
1789	}	2441	}
1790		2442
1791	void inline_speed	2443	/* internal, faster, version of ev_clear_pending */
		2444	inline_speed void
1792	clear_pending (EV_P_ W w)	2445	clear_pending (EV_P_ W w)
1793	{	2446	{
1794	if (w->pending)	2447	if (w->pending)
1795	{	2448	{
1796	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2449	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1797	w->pending = 0;	2450	w->pending = 0;
1798	}	2451	}
1799	}	2452	}
1800		2453
1801	int	2454	int
…		…
1805	int pending = w_->pending;	2458	int pending = w_->pending;
1806		2459
1807	if (expect_true (pending))	2460	if (expect_true (pending))
1808	{	2461	{
1809	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2462	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2463	p->w = (W)&pending_w;
1810	w_->pending = 0;	2464	w_->pending = 0;
1811	p->w = 0;
1812	return p->events;	2465	return p->events;
1813	}	2466	}
1814	else	2467	else
1815	return 0;	2468	return 0;
1816	}	2469	}
1817		2470
1818	void inline_size	2471	inline_size void
1819	pri_adjust (EV_P_ W w)	2472	pri_adjust (EV_P_ W w)
1820	{	2473	{
1821	int pri = w->priority;	2474	int pri = ev_priority (w);
1822	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2475	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1823	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2476	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1824	w->priority = pri;	2477	ev_set_priority (w, pri);
1825	}	2478	}
1826		2479
1827	void inline_speed	2480	inline_speed void
1828	ev_start (EV_P_ W w, int active)	2481	ev_start (EV_P_ W w, int active)
1829	{	2482	{
1830	pri_adjust (EV_A_ w);	2483	pri_adjust (EV_A_ w);
1831	w->active = active;	2484	w->active = active;
1832	ev_ref (EV_A);	2485	ev_ref (EV_A);
1833	}	2486	}
1834		2487
1835	void inline_size	2488	inline_size void
1836	ev_stop (EV_P_ W w)	2489	ev_stop (EV_P_ W w)
1837	{	2490	{
1838	ev_unref (EV_A);	2491	ev_unref (EV_A);
1839	w->active = 0;	2492	w->active = 0;
1840	}	2493	}
…		…
1847	int fd = w->fd;	2500	int fd = w->fd;
1848		2501
1849	if (expect_false (ev_is_active (w)))	2502	if (expect_false (ev_is_active (w)))
1850	return;	2503	return;
1851		2504
1852	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;
1853		2509
1854	ev_start (EV_A_ (W)w, 1);	2510	ev_start (EV_A_ (W)w, 1);
1855	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2511	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1856	wlist_add (&anfds[fd].head, (WL)w);	2512	wlist_add (&anfds[fd].head, (WL)w);
1857		2513
1858	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2514	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1859	w->events &= ~EV_IOFDSET;	2515	w->events &= ~EV__IOFDSET;
		2516
		2517	EV_FREQUENT_CHECK;
1860	}	2518	}
1861		2519
1862	void noinline	2520	void noinline
1863	ev_io_stop (EV_P_ ev_io *w)	2521	ev_io_stop (EV_P_ ev_io *w)
1864	{	2522	{
1865	clear_pending (EV_A_ (W)w);	2523	clear_pending (EV_A_ (W)w);
1866	if (expect_false (!ev_is_active (w)))	2524	if (expect_false (!ev_is_active (w)))
1867	return;	2525	return;
1868		2526
1869	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;
1870		2530
1871	wlist_del (&anfds[w->fd].head, (WL)w);	2531	wlist_del (&anfds[w->fd].head, (WL)w);
1872	ev_stop (EV_A_ (W)w);	2532	ev_stop (EV_A_ (W)w);
1873		2533
1874	fd_change (EV_A_ w->fd, 1);	2534	fd_change (EV_A_ w->fd, 1);
		2535
		2536	EV_FREQUENT_CHECK;
1875	}	2537	}
1876		2538
1877	void noinline	2539	void noinline
1878	ev_timer_start (EV_P_ ev_timer *w)	2540	ev_timer_start (EV_P_ ev_timer *w)
1879	{	2541	{
1880	if (expect_false (ev_is_active (w)))	2542	if (expect_false (ev_is_active (w)))
1881	return;	2543	return;
1882		2544
1883	((WT)w)->at += mn_now;	2545	ev_at (w) += mn_now;
1884		2546
1885	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.));
1886		2548
		2549	EV_FREQUENT_CHECK;
		2550
		2551	++timercnt;
1887	ev_start (EV_A_ (W)w, ++timercnt);	2552	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1888	array_needsize (WT, timers, timermax, timercnt, EMPTY2);	2553	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1889	timers [timercnt - 1] = (WT)w;	2554	ANHE_w (timers [ev_active (w)]) = (WT)w;
1890	upheap (timers, timercnt - 1);	2555	ANHE_at_cache (timers [ev_active (w)]);
		2556	upheap (timers, ev_active (w));
1891		2557
		2558	EV_FREQUENT_CHECK;
		2559
1892	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	2560	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1893	}	2561	}
1894		2562
1895	void noinline	2563	void noinline
1896	ev_timer_stop (EV_P_ ev_timer *w)	2564	ev_timer_stop (EV_P_ ev_timer *w)
1897	{	2565	{
1898	clear_pending (EV_A_ (W)w);	2566	clear_pending (EV_A_ (W)w);
1899	if (expect_false (!ev_is_active (w)))	2567	if (expect_false (!ev_is_active (w)))
1900	return;	2568	return;
1901		2569
1902	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));	2570	EV_FREQUENT_CHECK;
1903		2571
1904	{	2572	{
1905	int active = ((W)w)->active;	2573	int active = ev_active (w);
1906		2574
		2575	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2576
		2577	--timercnt;
		2578
1907	if (expect_true (--active < --timercnt))	2579	if (expect_true (active < timercnt + HEAP0))
1908	{	2580	{
1909	timers [active] = timers [timercnt];	2581	timers [active] = timers [timercnt + HEAP0];
1910	adjustheap (timers, timercnt, active);	2582	adjustheap (timers, timercnt, active);
1911	}	2583	}
1912	}	2584	}
1913		2585
1914	((WT)w)->at -= mn_now;	2586	EV_FREQUENT_CHECK;
		2587
		2588	ev_at (w) -= mn_now;
1915		2589
1916	ev_stop (EV_A_ (W)w);	2590	ev_stop (EV_A_ (W)w);
1917	}	2591	}
1918		2592
1919	void noinline	2593	void noinline
1920	ev_timer_again (EV_P_ ev_timer *w)	2594	ev_timer_again (EV_P_ ev_timer *w)
1921	{	2595	{
		2596	EV_FREQUENT_CHECK;
		2597
1922	if (ev_is_active (w))	2598	if (ev_is_active (w))
1923	{	2599	{
1924	if (w->repeat)	2600	if (w->repeat)
1925	{	2601	{
1926	((WT)w)->at = mn_now + w->repeat;	2602	ev_at (w) = mn_now + w->repeat;
		2603	ANHE_at_cache (timers [ev_active (w)]);
1927	adjustheap (timers, timercnt, ((W)w)->active - 1);	2604	adjustheap (timers, timercnt, ev_active (w));
1928	}	2605	}
1929	else	2606	else
1930	ev_timer_stop (EV_A_ w);	2607	ev_timer_stop (EV_A_ w);
1931	}	2608	}
1932	else if (w->repeat)	2609	else if (w->repeat)
1933	{	2610	{
1934	w->at = w->repeat;	2611	ev_at (w) = w->repeat;
1935	ev_timer_start (EV_A_ w);	2612	ev_timer_start (EV_A_ w);
1936	}	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.);
1937	}	2622	}
1938		2623
1939	#if EV_PERIODIC_ENABLE	2624	#if EV_PERIODIC_ENABLE
1940	void noinline	2625	void noinline
1941	ev_periodic_start (EV_P_ ev_periodic *w)	2626	ev_periodic_start (EV_P_ ev_periodic *w)
1942	{	2627	{
1943	if (expect_false (ev_is_active (w)))	2628	if (expect_false (ev_is_active (w)))
1944	return;	2629	return;
1945		2630
1946	if (w->reschedule_cb)	2631	if (w->reschedule_cb)
1947	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2632	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1948	else if (w->interval)	2633	else if (w->interval)
1949	{	2634	{
1950	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.));
1951	/* 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 */
1952	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2637	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1953	}	2638	}
1954	else	2639	else
1955	((WT)w)->at = w->offset;	2640	ev_at (w) = w->offset;
1956		2641
		2642	EV_FREQUENT_CHECK;
		2643
		2644	++periodiccnt;
1957	ev_start (EV_A_ (W)w, ++periodiccnt);	2645	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1958	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);	2646	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1959	periodics [periodiccnt - 1] = (WT)w;	2647	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1960	upheap (periodics, periodiccnt - 1);	2648	ANHE_at_cache (periodics [ev_active (w)]);
		2649	upheap (periodics, ev_active (w));
1961		2650
		2651	EV_FREQUENT_CHECK;
		2652
1962	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2653	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1963	}	2654	}
1964		2655
1965	void noinline	2656	void noinline
1966	ev_periodic_stop (EV_P_ ev_periodic *w)	2657	ev_periodic_stop (EV_P_ ev_periodic *w)
1967	{	2658	{
1968	clear_pending (EV_A_ (W)w);	2659	clear_pending (EV_A_ (W)w);
1969	if (expect_false (!ev_is_active (w)))	2660	if (expect_false (!ev_is_active (w)))
1970	return;	2661	return;
1971		2662
1972	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));	2663	EV_FREQUENT_CHECK;
1973		2664
1974	{	2665	{
1975	int active = ((W)w)->active;	2666	int active = ev_active (w);
1976		2667
		2668	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2669
		2670	--periodiccnt;
		2671
1977	if (expect_true (--active < --periodiccnt))	2672	if (expect_true (active < periodiccnt + HEAP0))
1978	{	2673	{
1979	periodics [active] = periodics [periodiccnt];	2674	periodics [active] = periodics [periodiccnt + HEAP0];
1980	adjustheap (periodics, periodiccnt, active);	2675	adjustheap (periodics, periodiccnt, active);
1981	}	2676	}
1982	}	2677	}
1983		2678
		2679	EV_FREQUENT_CHECK;
		2680
1984	ev_stop (EV_A_ (W)w);	2681	ev_stop (EV_A_ (W)w);
1985	}	2682	}
1986		2683
1987	void noinline	2684	void noinline
1988	ev_periodic_again (EV_P_ ev_periodic *w)	2685	ev_periodic_again (EV_P_ ev_periodic *w)
…		…
1998	#endif	2695	#endif
1999		2696
2000	void noinline	2697	void noinline
2001	ev_signal_start (EV_P_ ev_signal *w)	2698	ev_signal_start (EV_P_ ev_signal *w)
2002	{	2699	{
2003	#if EV_MULTIPLICITY
2004	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2005	#endif
2006	if (expect_false (ev_is_active (w)))	2700	if (expect_false (ev_is_active (w)))
2007	return;	2701	return;
2008		2702
2009	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));
2010		2704
2011	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));
2012		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)
2013	{	2716	{
2014	#ifndef _WIN32	2717	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2015	sigset_t full, prev;	2718	if (sigfd < 0 && errno == EINVAL)
2016	sigfillset (&full);	2719	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2017	sigprocmask (SIG_SETMASK, &full, &prev);
2018	#endif
2019		2720
2020	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2721	if (sigfd >= 0)
		2722	{
		2723	fd_intern (sigfd); /* doing it twice will not hurt */
2021		2724
2022	#ifndef _WIN32	2725	sigemptyset (&sigfd_set);
2023	sigprocmask (SIG_SETMASK, &prev, 0);	2726
2024	#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	}
2025	}	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
2026		2743
2027	ev_start (EV_A_ (W)w, 1);	2744	ev_start (EV_A_ (W)w, 1);
2028	wlist_add (&signals [w->signum - 1].head, (WL)w);	2745	wlist_add (&signals [w->signum - 1].head, (WL)w);
2029		2746
2030	if (!((WL)w)->next)	2747	if (!((WL)w)->next)
		2748	# if EV_USE_SIGNALFD
		2749	if (sigfd < 0) /*TODO*/
		2750	# endif
2031	{	2751	{
2032	#if _WIN32	2752	# if _WIN32
		2753	evpipe_init (EV_A);
		2754
2033	signal (w->signum, ev_sighandler);	2755	signal (w->signum, ev_sighandler);
2034	#else	2756	# else
2035	struct sigaction sa;	2757	struct sigaction sa;
		2758
		2759	evpipe_init (EV_A);
		2760
2036	sa.sa_handler = ev_sighandler;	2761	sa.sa_handler = ev_sighandler;
2037	sigfillset (&sa.sa_mask);	2762	sigfillset (&sa.sa_mask);
2038	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 */
2039	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);
2040	#endif	2769	#endif
2041	}	2770	}
		2771
		2772	EV_FREQUENT_CHECK;
2042	}	2773	}
2043		2774
2044	void noinline	2775	void noinline
2045	ev_signal_stop (EV_P_ ev_signal *w)	2776	ev_signal_stop (EV_P_ ev_signal *w)
2046	{	2777	{
2047	clear_pending (EV_A_ (W)w);	2778	clear_pending (EV_A_ (W)w);
2048	if (expect_false (!ev_is_active (w)))	2779	if (expect_false (!ev_is_active (w)))
2049	return;	2780	return;
2050		2781
		2782	EV_FREQUENT_CHECK;
		2783
2051	wlist_del (&signals [w->signum - 1].head, (WL)w);	2784	wlist_del (&signals [w->signum - 1].head, (WL)w);
2052	ev_stop (EV_A_ (W)w);	2785	ev_stop (EV_A_ (W)w);
2053		2786
2054	if (!signals [w->signum - 1].head)	2787	if (!signals [w->signum - 1].head)
		2788	{
		2789	#if EV_MULTIPLICITY
		2790	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2791	#endif
		2792	#if EV_USE_SIGNALFD
		2793	if (sigfd >= 0)
		2794	{
		2795	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2796	sigdelset (&sigfd_set, w->signum);
		2797	signalfd (sigfd, &sigfd_set, 0);
		2798	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2799	/*TODO: maybe unblock signal? */
		2800	}
		2801	else
		2802	#endif
2055	signal (w->signum, SIG_DFL);	2803	signal (w->signum, SIG_DFL);
		2804	}
		2805
		2806	EV_FREQUENT_CHECK;
2056	}	2807	}
2057		2808
2058	void	2809	void
2059	ev_child_start (EV_P_ ev_child *w)	2810	ev_child_start (EV_P_ ev_child *w)
2060	{	2811	{
2061	#if EV_MULTIPLICITY	2812	#if EV_MULTIPLICITY
2062	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2813	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2063	#endif	2814	#endif
2064	if (expect_false (ev_is_active (w)))	2815	if (expect_false (ev_is_active (w)))
2065	return;	2816	return;
2066		2817
		2818	EV_FREQUENT_CHECK;
		2819
2067	ev_start (EV_A_ (W)w, 1);	2820	ev_start (EV_A_ (W)w, 1);
2068	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2821	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2822
		2823	EV_FREQUENT_CHECK;
2069	}	2824	}
2070		2825
2071	void	2826	void
2072	ev_child_stop (EV_P_ ev_child *w)	2827	ev_child_stop (EV_P_ ev_child *w)
2073	{	2828	{
2074	clear_pending (EV_A_ (W)w);	2829	clear_pending (EV_A_ (W)w);
2075	if (expect_false (!ev_is_active (w)))	2830	if (expect_false (!ev_is_active (w)))
2076	return;	2831	return;
2077		2832
		2833	EV_FREQUENT_CHECK;
		2834
2078	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2835	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2079	ev_stop (EV_A_ (W)w);	2836	ev_stop (EV_A_ (W)w);
		2837
		2838	EV_FREQUENT_CHECK;
2080	}	2839	}
2081		2840
2082	#if EV_STAT_ENABLE	2841	#if EV_STAT_ENABLE
2083		2842
2084	# ifdef _WIN32	2843	# ifdef _WIN32
2085	# undef lstat	2844	# undef lstat
2086	# define lstat(a,b) _stati64 (a,b)	2845	# define lstat(a,b) _stati64 (a,b)
2087	# endif	2846	# endif
2088		2847
2089	#define DEF_STAT_INTERVAL 5.0074891	2848	#define DEF_STAT_INTERVAL 5.0074891
		2849	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2090	#define MIN_STAT_INTERVAL 0.1074891	2850	#define MIN_STAT_INTERVAL 0.1074891
2091		2851
2092	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2852	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2093		2853
2094	#if EV_USE_INOTIFY	2854	#if EV_USE_INOTIFY
2095	# define EV_INOTIFY_BUFSIZE 8192	2855	# define EV_INOTIFY_BUFSIZE 8192
…		…
2097	static void noinline	2857	static void noinline
2098	infy_add (EV_P_ ev_stat *w)	2858	infy_add (EV_P_ ev_stat *w)
2099	{	2859	{
2100	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);	2860	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2101		2861
2102	if (w->wd < 0)	2862	if (w->wd >= 0)
		2863	{
		2864	struct statfs sfs;
		2865
		2866	/* now local changes will be tracked by inotify, but remote changes won't */
		2867	/* unless the filesystem is known to be local, we therefore still poll */
		2868	/* also do poll on <2.6.25, but with normal frequency */
		2869
		2870	if (!fs_2625)
		2871	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2872	else if (!statfs (w->path, &sfs)
		2873	&& (sfs.f_type == 0x1373 /* devfs */
		2874	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2875	|| sfs.f_type == 0x3153464a /* jfs */
		2876	|| sfs.f_type == 0x52654973 /* reiser3 */
		2877	|| sfs.f_type == 0x01021994 /* tempfs */
		2878	|| sfs.f_type == 0x58465342 /* xfs */))
		2879	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2880	else
		2881	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2103	{	2882	}
2104	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2883	else
		2884	{
		2885	/* can't use inotify, continue to stat */
		2886	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2105		2887
2106	/* monitor some parent directory for speedup hints */	2888	/* if path is not there, monitor some parent directory for speedup hints */
		2889	/* note that exceeding the hardcoded path limit is not a correctness issue, */
		2890	/* but an efficiency issue only */
2107	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2891	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2108	{	2892	{
2109	char path [4096];	2893	char path [4096];
2110	strcpy (path, w->path);	2894	strcpy (path, w->path);
2111		2895
…		…
2114	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2898	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2115	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2899	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2116		2900
2117	char *pend = strrchr (path, '/');	2901	char *pend = strrchr (path, '/');
2118		2902
2119	if (!pend)	2903	if (!pend || pend == path)
2120	break; /* whoops, no '/', complain to your admin */	2904	break;
2121		2905
2122	*pend = 0;	2906	*pend = 0;
2123	w->wd = inotify_add_watch (fs_fd, path, mask);	2907	w->wd = inotify_add_watch (fs_fd, path, mask);
2124	}	2908	}
2125	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2909	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2126	}	2910	}
2127	}	2911	}
2128	else
2129	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2130		2912
2131	if (w->wd >= 0)	2913	if (w->wd >= 0)
2132	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2914	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2915
		2916	/* now re-arm timer, if required */
		2917	if (ev_is_active (&w->timer)) ev_ref (EV_A);
		2918	ev_timer_again (EV_A_ &w->timer);
		2919	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2133	}	2920	}
2134		2921
2135	static void noinline	2922	static void noinline
2136	infy_del (EV_P_ ev_stat *w)	2923	infy_del (EV_P_ ev_stat *w)
2137	{	2924	{
…		…
2151		2938
2152	static void noinline	2939	static void noinline
2153	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2940	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2154	{	2941	{
2155	if (slot < 0)	2942	if (slot < 0)
2156	/* overflow, need to check for all hahs slots */	2943	/* overflow, need to check for all hash slots */
2157	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2944	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2158	infy_wd (EV_A_ slot, wd, ev);	2945	infy_wd (EV_A_ slot, wd, ev);
2159	else	2946	else
2160	{	2947	{
2161	WL w_;	2948	WL w_;
…		…
2167		2954
2168	if (w->wd == wd || wd == -1)	2955	if (w->wd == wd || wd == -1)
2169	{	2956	{
2170	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2957	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2171	{	2958	{
		2959	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2172	w->wd = -1;	2960	w->wd = -1;
2173	infy_add (EV_A_ w); /* re-add, no matter what */	2961	infy_add (EV_A_ w); /* re-add, no matter what */
2174	}	2962	}
2175		2963
2176	stat_timer_cb (EV_A_ &w->timer, 0);	2964	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2189		2977
2190	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2978	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2191	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2979	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2192	}	2980	}
2193		2981
2194	void inline_size	2982	inline_size void
		2983	check_2625 (EV_P)
		2984	{
		2985	/* kernels < 2.6.25 are borked
		2986	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2987	*/
		2988	struct utsname buf;
		2989	int major, minor, micro;
		2990
		2991	if (uname (&buf))
		2992	return;
		2993
		2994	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2995	return;
		2996
		2997	if (major < 2
		2998	|| (major == 2 && minor < 6)
		2999	|| (major == 2 && minor == 6 && micro < 25))
		3000	return;
		3001
		3002	fs_2625 = 1;
		3003	}
		3004
		3005	inline_size int
		3006	infy_newfd (void)
		3007	{
		3008	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3009	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3010	if (fd >= 0)
		3011	return fd;
		3012	#endif
		3013	return inotify_init ();
		3014	}
		3015
		3016	inline_size void
2195	infy_init (EV_P)	3017	infy_init (EV_P)
2196	{	3018	{
2197	if (fs_fd != -2)	3019	if (fs_fd != -2)
2198	return;	3020	return;
2199		3021
		3022	fs_fd = -1;
		3023
		3024	check_2625 (EV_A);
		3025
2200	fs_fd = inotify_init ();	3026	fs_fd = infy_newfd ();
2201		3027
2202	if (fs_fd >= 0)	3028	if (fs_fd >= 0)
2203	{	3029	{
		3030	fd_intern (fs_fd);
2204	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3031	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2205	ev_set_priority (&fs_w, EV_MAXPRI);	3032	ev_set_priority (&fs_w, EV_MAXPRI);
2206	ev_io_start (EV_A_ &fs_w);	3033	ev_io_start (EV_A_ &fs_w);
		3034	ev_unref (EV_A);
2207	}	3035	}
2208	}	3036	}
2209		3037
2210	void inline_size	3038	inline_size void
2211	infy_fork (EV_P)	3039	infy_fork (EV_P)
2212	{	3040	{
2213	int slot;	3041	int slot;
2214		3042
2215	if (fs_fd < 0)	3043	if (fs_fd < 0)
2216	return;	3044	return;
2217		3045
		3046	ev_ref (EV_A);
		3047	ev_io_stop (EV_A_ &fs_w);
2218	close (fs_fd);	3048	close (fs_fd);
2219	fs_fd = inotify_init ();	3049	fs_fd = infy_newfd ();
		3050
		3051	if (fs_fd >= 0)
		3052	{
		3053	fd_intern (fs_fd);
		3054	ev_io_set (&fs_w, fs_fd, EV_READ);
		3055	ev_io_start (EV_A_ &fs_w);
		3056	ev_unref (EV_A);
		3057	}
2220		3058
2221	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3059	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2222	{	3060	{
2223	WL w_ = fs_hash [slot].head;	3061	WL w_ = fs_hash [slot].head;
2224	fs_hash [slot].head = 0;	3062	fs_hash [slot].head = 0;
…		…
2231	w->wd = -1;	3069	w->wd = -1;
2232		3070
2233	if (fs_fd >= 0)	3071	if (fs_fd >= 0)
2234	infy_add (EV_A_ w); /* re-add, no matter what */	3072	infy_add (EV_A_ w); /* re-add, no matter what */
2235	else	3073	else
		3074	{
		3075	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3076	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2236	ev_timer_start (EV_A_ &w->timer);	3077	ev_timer_again (EV_A_ &w->timer);
		3078	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3079	}
2237	}	3080	}
2238
2239	}	3081	}
2240	}	3082	}
2241		3083
		3084	#endif
		3085
		3086	#ifdef _WIN32
		3087	# define EV_LSTAT(p,b) _stati64 (p, b)
		3088	#else
		3089	# define EV_LSTAT(p,b) lstat (p, b)
2242	#endif	3090	#endif
2243		3091
2244	void	3092	void
2245	ev_stat_stat (EV_P_ ev_stat *w)	3093	ev_stat_stat (EV_P_ ev_stat *w)
2246	{	3094	{
…		…
2253	static void noinline	3101	static void noinline
2254	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3102	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2255	{	3103	{
2256	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	3104	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2257		3105
2258	/* we copy this here each the time so that */	3106	ev_statdata prev = w->attr;
2259	/* prev has the old value when the callback gets invoked */
2260	w->prev = w->attr;
2261	ev_stat_stat (EV_A_ w);	3107	ev_stat_stat (EV_A_ w);
2262		3108
2263	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3109	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2264	if (	3110	if (
2265	w->prev.st_dev != w->attr.st_dev	3111	prev.st_dev != w->attr.st_dev
2266	|| w->prev.st_ino != w->attr.st_ino	3112	|| prev.st_ino != w->attr.st_ino
2267	|| w->prev.st_mode != w->attr.st_mode	3113	|| prev.st_mode != w->attr.st_mode
2268	|| w->prev.st_nlink != w->attr.st_nlink	3114	|| prev.st_nlink != w->attr.st_nlink
2269	|| w->prev.st_uid != w->attr.st_uid	3115	|| prev.st_uid != w->attr.st_uid
2270	|| w->prev.st_gid != w->attr.st_gid	3116	|| prev.st_gid != w->attr.st_gid
2271	|| w->prev.st_rdev != w->attr.st_rdev	3117	|| prev.st_rdev != w->attr.st_rdev
2272	|| w->prev.st_size != w->attr.st_size	3118	|| prev.st_size != w->attr.st_size
2273	|| w->prev.st_atime != w->attr.st_atime	3119	|| prev.st_atime != w->attr.st_atime
2274	|| w->prev.st_mtime != w->attr.st_mtime	3120	|| prev.st_mtime != w->attr.st_mtime
2275	|| w->prev.st_ctime != w->attr.st_ctime	3121	|| prev.st_ctime != w->attr.st_ctime
2276	) {	3122	) {
		3123	/* we only update w->prev on actual differences */
		3124	/* in case we test more often than invoke the callback, */
		3125	/* to ensure that prev is always different to attr */
		3126	w->prev = prev;
		3127
2277	#if EV_USE_INOTIFY	3128	#if EV_USE_INOTIFY
		3129	if (fs_fd >= 0)
		3130	{
2278	infy_del (EV_A_ w);	3131	infy_del (EV_A_ w);
2279	infy_add (EV_A_ w);	3132	infy_add (EV_A_ w);
2280	ev_stat_stat (EV_A_ w); /* avoid race... */	3133	ev_stat_stat (EV_A_ w); /* avoid race... */
		3134	}
2281	#endif	3135	#endif
2282		3136
2283	ev_feed_event (EV_A_ w, EV_STAT);	3137	ev_feed_event (EV_A_ w, EV_STAT);
2284	}	3138	}
2285	}	3139	}
…		…
2288	ev_stat_start (EV_P_ ev_stat *w)	3142	ev_stat_start (EV_P_ ev_stat *w)
2289	{	3143	{
2290	if (expect_false (ev_is_active (w)))	3144	if (expect_false (ev_is_active (w)))
2291	return;	3145	return;
2292		3146
2293	/* since we use memcmp, we need to clear any padding data etc. */
2294	memset (&w->prev, 0, sizeof (ev_statdata));
2295	memset (&w->attr, 0, sizeof (ev_statdata));
2296
2297	ev_stat_stat (EV_A_ w);	3147	ev_stat_stat (EV_A_ w);
2298		3148
		3149	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2299	if (w->interval < MIN_STAT_INTERVAL)	3150	w->interval = MIN_STAT_INTERVAL;
2300	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2301		3151
2302	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3152	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2303	ev_set_priority (&w->timer, ev_priority (w));	3153	ev_set_priority (&w->timer, ev_priority (w));
2304		3154
2305	#if EV_USE_INOTIFY	3155	#if EV_USE_INOTIFY
2306	infy_init (EV_A);	3156	infy_init (EV_A);
2307		3157
2308	if (fs_fd >= 0)	3158	if (fs_fd >= 0)
2309	infy_add (EV_A_ w);	3159	infy_add (EV_A_ w);
2310	else	3160	else
2311	#endif	3161	#endif
		3162	{
2312	ev_timer_start (EV_A_ &w->timer);	3163	ev_timer_again (EV_A_ &w->timer);
		3164	ev_unref (EV_A);
		3165	}
2313		3166
2314	ev_start (EV_A_ (W)w, 1);	3167	ev_start (EV_A_ (W)w, 1);
		3168
		3169	EV_FREQUENT_CHECK;
2315	}	3170	}
2316		3171
2317	void	3172	void
2318	ev_stat_stop (EV_P_ ev_stat *w)	3173	ev_stat_stop (EV_P_ ev_stat *w)
2319	{	3174	{
2320	clear_pending (EV_A_ (W)w);	3175	clear_pending (EV_A_ (W)w);
2321	if (expect_false (!ev_is_active (w)))	3176	if (expect_false (!ev_is_active (w)))
2322	return;	3177	return;
2323		3178
		3179	EV_FREQUENT_CHECK;
		3180
2324	#if EV_USE_INOTIFY	3181	#if EV_USE_INOTIFY
2325	infy_del (EV_A_ w);	3182	infy_del (EV_A_ w);
2326	#endif	3183	#endif
		3184
		3185	if (ev_is_active (&w->timer))
		3186	{
		3187	ev_ref (EV_A);
2327	ev_timer_stop (EV_A_ &w->timer);	3188	ev_timer_stop (EV_A_ &w->timer);
		3189	}
2328		3190
2329	ev_stop (EV_A_ (W)w);	3191	ev_stop (EV_A_ (W)w);
		3192
		3193	EV_FREQUENT_CHECK;
2330	}	3194	}
2331	#endif	3195	#endif
2332		3196
2333	#if EV_IDLE_ENABLE	3197	#if EV_IDLE_ENABLE
2334	void	3198	void
…		…
2336	{	3200	{
2337	if (expect_false (ev_is_active (w)))	3201	if (expect_false (ev_is_active (w)))
2338	return;	3202	return;
2339		3203
2340	pri_adjust (EV_A_ (W)w);	3204	pri_adjust (EV_A_ (W)w);
		3205
		3206	EV_FREQUENT_CHECK;
2341		3207
2342	{	3208	{
2343	int active = ++idlecnt [ABSPRI (w)];	3209	int active = ++idlecnt [ABSPRI (w)];
2344		3210
2345	++idleall;	3211	++idleall;
2346	ev_start (EV_A_ (W)w, active);	3212	ev_start (EV_A_ (W)w, active);
2347		3213
2348	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	3214	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2349	idles [ABSPRI (w)][active - 1] = w;	3215	idles [ABSPRI (w)][active - 1] = w;
2350	}	3216	}
		3217
		3218	EV_FREQUENT_CHECK;
2351	}	3219	}
2352		3220
2353	void	3221	void
2354	ev_idle_stop (EV_P_ ev_idle *w)	3222	ev_idle_stop (EV_P_ ev_idle *w)
2355	{	3223	{
2356	clear_pending (EV_A_ (W)w);	3224	clear_pending (EV_A_ (W)w);
2357	if (expect_false (!ev_is_active (w)))	3225	if (expect_false (!ev_is_active (w)))
2358	return;	3226	return;
2359		3227
		3228	EV_FREQUENT_CHECK;
		3229
2360	{	3230	{
2361	int active = ((W)w)->active;	3231	int active = ev_active (w);
2362		3232
2363	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3233	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2364	((W)idles [ABSPRI (w)][active - 1])->active = active;	3234	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2365		3235
2366	ev_stop (EV_A_ (W)w);	3236	ev_stop (EV_A_ (W)w);
2367	--idleall;	3237	--idleall;
2368	}	3238	}
		3239
		3240	EV_FREQUENT_CHECK;
2369	}	3241	}
2370	#endif	3242	#endif
2371		3243
2372	void	3244	void
2373	ev_prepare_start (EV_P_ ev_prepare *w)	3245	ev_prepare_start (EV_P_ ev_prepare *w)
2374	{	3246	{
2375	if (expect_false (ev_is_active (w)))	3247	if (expect_false (ev_is_active (w)))
2376	return;	3248	return;
		3249
		3250	EV_FREQUENT_CHECK;
2377		3251
2378	ev_start (EV_A_ (W)w, ++preparecnt);	3252	ev_start (EV_A_ (W)w, ++preparecnt);
2379	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3253	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2380	prepares [preparecnt - 1] = w;	3254	prepares [preparecnt - 1] = w;
		3255
		3256	EV_FREQUENT_CHECK;
2381	}	3257	}
2382		3258
2383	void	3259	void
2384	ev_prepare_stop (EV_P_ ev_prepare *w)	3260	ev_prepare_stop (EV_P_ ev_prepare *w)
2385	{	3261	{
2386	clear_pending (EV_A_ (W)w);	3262	clear_pending (EV_A_ (W)w);
2387	if (expect_false (!ev_is_active (w)))	3263	if (expect_false (!ev_is_active (w)))
2388	return;	3264	return;
2389		3265
		3266	EV_FREQUENT_CHECK;
		3267
2390	{	3268	{
2391	int active = ((W)w)->active;	3269	int active = ev_active (w);
		3270
2392	prepares [active - 1] = prepares [--preparecnt];	3271	prepares [active - 1] = prepares [--preparecnt];
2393	((W)prepares [active - 1])->active = active;	3272	ev_active (prepares [active - 1]) = active;
2394	}	3273	}
2395		3274
2396	ev_stop (EV_A_ (W)w);	3275	ev_stop (EV_A_ (W)w);
		3276
		3277	EV_FREQUENT_CHECK;
2397	}	3278	}
2398		3279
2399	void	3280	void
2400	ev_check_start (EV_P_ ev_check *w)	3281	ev_check_start (EV_P_ ev_check *w)
2401	{	3282	{
2402	if (expect_false (ev_is_active (w)))	3283	if (expect_false (ev_is_active (w)))
2403	return;	3284	return;
		3285
		3286	EV_FREQUENT_CHECK;
2404		3287
2405	ev_start (EV_A_ (W)w, ++checkcnt);	3288	ev_start (EV_A_ (W)w, ++checkcnt);
2406	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3289	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2407	checks [checkcnt - 1] = w;	3290	checks [checkcnt - 1] = w;
		3291
		3292	EV_FREQUENT_CHECK;
2408	}	3293	}
2409		3294
2410	void	3295	void
2411	ev_check_stop (EV_P_ ev_check *w)	3296	ev_check_stop (EV_P_ ev_check *w)
2412	{	3297	{
2413	clear_pending (EV_A_ (W)w);	3298	clear_pending (EV_A_ (W)w);
2414	if (expect_false (!ev_is_active (w)))	3299	if (expect_false (!ev_is_active (w)))
2415	return;	3300	return;
2416		3301
		3302	EV_FREQUENT_CHECK;
		3303
2417	{	3304	{
2418	int active = ((W)w)->active;	3305	int active = ev_active (w);
		3306
2419	checks [active - 1] = checks [--checkcnt];	3307	checks [active - 1] = checks [--checkcnt];
2420	((W)checks [active - 1])->active = active;	3308	ev_active (checks [active - 1]) = active;
2421	}	3309	}
2422		3310
2423	ev_stop (EV_A_ (W)w);	3311	ev_stop (EV_A_ (W)w);
		3312
		3313	EV_FREQUENT_CHECK;
2424	}	3314	}
2425		3315
2426	#if EV_EMBED_ENABLE	3316	#if EV_EMBED_ENABLE
2427	void noinline	3317	void noinline
2428	ev_embed_sweep (EV_P_ ev_embed *w)	3318	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2445	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3335	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2446	{	3336	{
2447	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3337	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2448		3338
2449	{	3339	{
2450	struct ev_loop *loop = w->other;	3340	EV_P = w->other;
2451		3341
2452	while (fdchangecnt)	3342	while (fdchangecnt)
2453	{	3343	{
2454	fd_reify (EV_A);	3344	fd_reify (EV_A);
2455	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3345	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2456	}	3346	}
2457	}	3347	}
2458	}	3348	}
2459		3349
		3350	static void
		3351	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3352	{
		3353	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3354
		3355	ev_embed_stop (EV_A_ w);
		3356
		3357	{
		3358	EV_P = w->other;
		3359
		3360	ev_loop_fork (EV_A);
		3361	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3362	}
		3363
		3364	ev_embed_start (EV_A_ w);
		3365	}
		3366
2460	#if 0	3367	#if 0
2461	static void	3368	static void
2462	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3369	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2463	{	3370	{
2464	ev_idle_stop (EV_A_ idle);	3371	ev_idle_stop (EV_A_ idle);
…		…
2470	{	3377	{
2471	if (expect_false (ev_is_active (w)))	3378	if (expect_false (ev_is_active (w)))
2472	return;	3379	return;
2473		3380
2474	{	3381	{
2475	struct ev_loop *loop = w->other;	3382	EV_P = w->other;
2476	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3383	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2477	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3384	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2478	}	3385	}
		3386
		3387	EV_FREQUENT_CHECK;
2479		3388
2480	ev_set_priority (&w->io, ev_priority (w));	3389	ev_set_priority (&w->io, ev_priority (w));
2481	ev_io_start (EV_A_ &w->io);	3390	ev_io_start (EV_A_ &w->io);
2482		3391
2483	ev_prepare_init (&w->prepare, embed_prepare_cb);	3392	ev_prepare_init (&w->prepare, embed_prepare_cb);
2484	ev_set_priority (&w->prepare, EV_MINPRI);	3393	ev_set_priority (&w->prepare, EV_MINPRI);
2485	ev_prepare_start (EV_A_ &w->prepare);	3394	ev_prepare_start (EV_A_ &w->prepare);
2486		3395
		3396	ev_fork_init (&w->fork, embed_fork_cb);
		3397	ev_fork_start (EV_A_ &w->fork);
		3398
2487	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3399	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2488		3400
2489	ev_start (EV_A_ (W)w, 1);	3401	ev_start (EV_A_ (W)w, 1);
		3402
		3403	EV_FREQUENT_CHECK;
2490	}	3404	}
2491		3405
2492	void	3406	void
2493	ev_embed_stop (EV_P_ ev_embed *w)	3407	ev_embed_stop (EV_P_ ev_embed *w)
2494	{	3408	{
2495	clear_pending (EV_A_ (W)w);	3409	clear_pending (EV_A_ (W)w);
2496	if (expect_false (!ev_is_active (w)))	3410	if (expect_false (!ev_is_active (w)))
2497	return;	3411	return;
2498		3412
		3413	EV_FREQUENT_CHECK;
		3414
2499	ev_io_stop (EV_A_ &w->io);	3415	ev_io_stop (EV_A_ &w->io);
2500	ev_prepare_stop (EV_A_ &w->prepare);	3416	ev_prepare_stop (EV_A_ &w->prepare);
		3417	ev_fork_stop (EV_A_ &w->fork);
2501		3418
2502	ev_stop (EV_A_ (W)w);	3419	EV_FREQUENT_CHECK;
2503	}	3420	}
2504	#endif	3421	#endif
2505		3422
2506	#if EV_FORK_ENABLE	3423	#if EV_FORK_ENABLE
2507	void	3424	void
2508	ev_fork_start (EV_P_ ev_fork *w)	3425	ev_fork_start (EV_P_ ev_fork *w)
2509	{	3426	{
2510	if (expect_false (ev_is_active (w)))	3427	if (expect_false (ev_is_active (w)))
2511	return;	3428	return;
		3429
		3430	EV_FREQUENT_CHECK;
2512		3431
2513	ev_start (EV_A_ (W)w, ++forkcnt);	3432	ev_start (EV_A_ (W)w, ++forkcnt);
2514	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3433	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2515	forks [forkcnt - 1] = w;	3434	forks [forkcnt - 1] = w;
		3435
		3436	EV_FREQUENT_CHECK;
2516	}	3437	}
2517		3438
2518	void	3439	void
2519	ev_fork_stop (EV_P_ ev_fork *w)	3440	ev_fork_stop (EV_P_ ev_fork *w)
2520	{	3441	{
2521	clear_pending (EV_A_ (W)w);	3442	clear_pending (EV_A_ (W)w);
2522	if (expect_false (!ev_is_active (w)))	3443	if (expect_false (!ev_is_active (w)))
2523	return;	3444	return;
2524		3445
		3446	EV_FREQUENT_CHECK;
		3447
2525	{	3448	{
2526	int active = ((W)w)->active;	3449	int active = ev_active (w);
		3450
2527	forks [active - 1] = forks [--forkcnt];	3451	forks [active - 1] = forks [--forkcnt];
2528	((W)forks [active - 1])->active = active;	3452	ev_active (forks [active - 1]) = active;
2529	}	3453	}
2530		3454
2531	ev_stop (EV_A_ (W)w);	3455	ev_stop (EV_A_ (W)w);
		3456
		3457	EV_FREQUENT_CHECK;
2532	}	3458	}
2533	#endif	3459	#endif
2534		3460
2535	#if EV_ASYNC_ENABLE	3461	#if EV_ASYNC_ENABLE
2536	void	3462	void
…		…
2538	{	3464	{
2539	if (expect_false (ev_is_active (w)))	3465	if (expect_false (ev_is_active (w)))
2540	return;	3466	return;
2541		3467
2542	evpipe_init (EV_A);	3468	evpipe_init (EV_A);
		3469
		3470	EV_FREQUENT_CHECK;
2543		3471
2544	ev_start (EV_A_ (W)w, ++asynccnt);	3472	ev_start (EV_A_ (W)w, ++asynccnt);
2545	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3473	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2546	asyncs [asynccnt - 1] = w;	3474	asyncs [asynccnt - 1] = w;
		3475
		3476	EV_FREQUENT_CHECK;
2547	}	3477	}
2548		3478
2549	void	3479	void
2550	ev_async_stop (EV_P_ ev_async *w)	3480	ev_async_stop (EV_P_ ev_async *w)
2551	{	3481	{
2552	clear_pending (EV_A_ (W)w);	3482	clear_pending (EV_A_ (W)w);
2553	if (expect_false (!ev_is_active (w)))	3483	if (expect_false (!ev_is_active (w)))
2554	return;	3484	return;
2555		3485
		3486	EV_FREQUENT_CHECK;
		3487
2556	{	3488	{
2557	int active = ((W)w)->active;	3489	int active = ev_active (w);
		3490
2558	asyncs [active - 1] = asyncs [--asynccnt];	3491	asyncs [active - 1] = asyncs [--asynccnt];
2559	((W)asyncs [active - 1])->active = active;	3492	ev_active (asyncs [active - 1]) = active;
2560	}	3493	}
2561		3494
2562	ev_stop (EV_A_ (W)w);	3495	ev_stop (EV_A_ (W)w);
		3496
		3497	EV_FREQUENT_CHECK;
2563	}	3498	}
2564		3499
2565	void	3500	void
2566	ev_async_send (EV_P_ ev_async *w)	3501	ev_async_send (EV_P_ ev_async *w)
2567	{	3502	{
2568	w->sent = 1;	3503	w->sent = 1;
2569	evpipe_write (EV_A_ &gotasync);	3504	evpipe_write (EV_A_ &async_pending);
2570	}	3505	}
2571	#endif	3506	#endif
2572		3507
2573	/*****************************************************************************/	3508	/*****************************************************************************/
2574		3509
…		…
2584	once_cb (EV_P_ struct ev_once *once, int revents)	3519	once_cb (EV_P_ struct ev_once *once, int revents)
2585	{	3520	{
2586	void (*cb)(int revents, void *arg) = once->cb;	3521	void (*cb)(int revents, void *arg) = once->cb;
2587	void *arg = once->arg;	3522	void *arg = once->arg;
2588		3523
2589	ev_io_stop (EV_A_ &once->io);	3524	ev_io_stop (EV_A_ &once->io);
2590	ev_timer_stop (EV_A_ &once->to);	3525	ev_timer_stop (EV_A_ &once->to);
2591	ev_free (once);	3526	ev_free (once);
2592		3527
2593	cb (revents, arg);	3528	cb (revents, arg);
2594	}	3529	}
2595		3530
2596	static void	3531	static void
2597	once_cb_io (EV_P_ ev_io *w, int revents)	3532	once_cb_io (EV_P_ ev_io *w, int revents)
2598	{	3533	{
2599	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3534	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3535
		3536	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2600	}	3537	}
2601		3538
2602	static void	3539	static void
2603	once_cb_to (EV_P_ ev_timer *w, int revents)	3540	once_cb_to (EV_P_ ev_timer *w, int revents)
2604	{	3541	{
2605	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3542	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3543
		3544	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2606	}	3545	}
2607		3546
2608	void	3547	void
2609	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3548	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2610	{	3549	{
…		…
2632	ev_timer_set (&once->to, timeout, 0.);	3571	ev_timer_set (&once->to, timeout, 0.);
2633	ev_timer_start (EV_A_ &once->to);	3572	ev_timer_start (EV_A_ &once->to);
2634	}	3573	}
2635	}	3574	}
2636		3575
		3576	/*****************************************************************************/
		3577
		3578	#if EV_WALK_ENABLE
		3579	void
		3580	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3581	{
		3582	int i, j;
		3583	ev_watcher_list *wl, *wn;
		3584
		3585	if (types & (EV_IO | EV_EMBED))
		3586	for (i = 0; i < anfdmax; ++i)
		3587	for (wl = anfds [i].head; wl; )
		3588	{
		3589	wn = wl->next;
		3590
		3591	#if EV_EMBED_ENABLE
		3592	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3593	{
		3594	if (types & EV_EMBED)
		3595	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3596	}
		3597	else
		3598	#endif
		3599	#if EV_USE_INOTIFY
		3600	if (ev_cb ((ev_io *)wl) == infy_cb)
		3601	;
		3602	else
		3603	#endif
		3604	if ((ev_io *)wl != &pipe_w)
		3605	if (types & EV_IO)
		3606	cb (EV_A_ EV_IO, wl);
		3607
		3608	wl = wn;
		3609	}
		3610
		3611	if (types & (EV_TIMER | EV_STAT))
		3612	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3613	#if EV_STAT_ENABLE
		3614	/*TODO: timer is not always active*/
		3615	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3616	{
		3617	if (types & EV_STAT)
		3618	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3619	}
		3620	else
		3621	#endif
		3622	if (types & EV_TIMER)
		3623	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3624
		3625	#if EV_PERIODIC_ENABLE
		3626	if (types & EV_PERIODIC)
		3627	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3628	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3629	#endif
		3630
		3631	#if EV_IDLE_ENABLE
		3632	if (types & EV_IDLE)
		3633	for (j = NUMPRI; i--; )
		3634	for (i = idlecnt [j]; i--; )
		3635	cb (EV_A_ EV_IDLE, idles [j][i]);
		3636	#endif
		3637
		3638	#if EV_FORK_ENABLE
		3639	if (types & EV_FORK)
		3640	for (i = forkcnt; i--; )
		3641	if (ev_cb (forks [i]) != embed_fork_cb)
		3642	cb (EV_A_ EV_FORK, forks [i]);
		3643	#endif
		3644
		3645	#if EV_ASYNC_ENABLE
		3646	if (types & EV_ASYNC)
		3647	for (i = asynccnt; i--; )
		3648	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3649	#endif
		3650
		3651	if (types & EV_PREPARE)
		3652	for (i = preparecnt; i--; )
		3653	#if EV_EMBED_ENABLE
		3654	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3655	#endif
		3656	cb (EV_A_ EV_PREPARE, prepares [i]);
		3657
		3658	if (types & EV_CHECK)
		3659	for (i = checkcnt; i--; )
		3660	cb (EV_A_ EV_CHECK, checks [i]);
		3661
		3662	if (types & EV_SIGNAL)
		3663	for (i = 0; i < EV_NSIG - 1; ++i)
		3664	for (wl = signals [i].head; wl; )
		3665	{
		3666	wn = wl->next;
		3667	cb (EV_A_ EV_SIGNAL, wl);
		3668	wl = wn;
		3669	}
		3670
		3671	if (types & EV_CHILD)
		3672	for (i = EV_PID_HASHSIZE; i--; )
		3673	for (wl = childs [i]; wl; )
		3674	{
		3675	wn = wl->next;
		3676	cb (EV_A_ EV_CHILD, wl);
		3677	wl = wn;
		3678	}
		3679	/* EV_STAT 0x00001000 /* stat data changed */
		3680	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3681	}
		3682	#endif
		3683
2637	#if EV_MULTIPLICITY	3684	#if EV_MULTIPLICITY
2638	#include "ev_wrap.h"	3685	#include "ev_wrap.h"
2639	#endif	3686	#endif
2640		3687
2641	#ifdef __cplusplus	3688	#ifdef __cplusplus

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