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Comparing libev/ev.c (file contents):
Revision 1.238 by root, Thu May 8 20:49:12 2008 UTC vs.
Revision 1.325 by root, Sun Jan 24 12:31:55 2010 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
47	# include EV_CONFIG_H	47	# include EV_CONFIG_H
48	# else	48	# else
49	# include "config.h"	49	# include "config.h"
50	# endif	50	# endif
51		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
		64	# endif
		65
52	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
55	# endif	69	# endif
56	# ifndef EV_USE_REALTIME	70	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	71	# define EV_USE_REALTIME 0
58	# endif	72	# endif
59	# else	73	# else
60	# ifndef EV_USE_MONOTONIC	74	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	75	# define EV_USE_MONOTONIC 0
62	# endif	76	# endif
…		…
96	# define EV_USE_EPOLL 0	110	# define EV_USE_EPOLL 0
97	# endif	111	# endif
98	# endif	112	# endif
99		113
100	# ifndef EV_USE_KQUEUE	114	# ifndef EV_USE_KQUEUE
101	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	115	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
102	# define EV_USE_KQUEUE 1	116	# define EV_USE_KQUEUE 1
103	# else	117	# else
104	# define EV_USE_KQUEUE 0	118	# define EV_USE_KQUEUE 0
105	# endif	119	# endif
106	# endif	120	# endif
…		…
119	# else	133	# else
120	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
121	# endif	135	# endif
122	# endif	136	# endif
123		137
		138	# ifndef EV_USE_SIGNALFD
		139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		140	# define EV_USE_SIGNALFD 1
		141	# else
		142	# define EV_USE_SIGNALFD 0
		143	# endif
		144	# endif
		145
124	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
125	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
126	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD 1
127	# else	149	# else
128	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
129	# endif	151	# endif
130	# endif	152	# endif
131		153
132	#endif	154	#endif
133		155
134	#include <math.h>	156	#include <math.h>
135	#include <stdlib.h>	157	#include <stdlib.h>
		158	#include <string.h>
136	#include <fcntl.h>	159	#include <fcntl.h>
137	#include <stddef.h>	160	#include <stddef.h>
138		161
139	#include <stdio.h>	162	#include <stdio.h>
140		163
…		…
154	#ifndef _WIN32	177	#ifndef _WIN32
155	# include <sys/time.h>	178	# include <sys/time.h>
156	# include <sys/wait.h>	179	# include <sys/wait.h>
157	# include <unistd.h>	180	# include <unistd.h>
158	#else	181	#else
		182	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	183	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	184	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	185	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	186	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	187	# endif
164	#endif	188	#endif
165		189
166	/* this block tries to deduce configuration from header-defined symbols and defaults */	190	/* this block tries to deduce configuration from header-defined symbols and defaults */
167		191
		192	/* try to deduce the maximum number of signals on this platform */
		193	#if defined (EV_NSIG)
		194	/* use what's provided */
		195	#elif defined (NSIG)
		196	# define EV_NSIG (NSIG)
		197	#elif defined(_NSIG)
		198	# define EV_NSIG (_NSIG)
		199	#elif defined (SIGMAX)
		200	# define EV_NSIG (SIGMAX+1)
		201	#elif defined (SIG_MAX)
		202	# define EV_NSIG (SIG_MAX+1)
		203	#elif defined (_SIG_MAX)
		204	# define EV_NSIG (_SIG_MAX+1)
		205	#elif defined (MAXSIG)
		206	# define EV_NSIG (MAXSIG+1)
		207	#elif defined (MAX_SIG)
		208	# define EV_NSIG (MAX_SIG+1)
		209	#elif defined (SIGARRAYSIZE)
		210	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		211	#elif defined (_sys_nsig)
		212	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		213	#else
		214	# error "unable to find value for NSIG, please report"
		215	/* to make it compile regardless, just remove the above line */
		216	# define EV_NSIG 65
		217	#endif
		218
		219	#ifndef EV_USE_CLOCK_SYSCALL
		220	# if __linux && __GLIBC__ >= 2
		221	# define EV_USE_CLOCK_SYSCALL 1
		222	# else
		223	# define EV_USE_CLOCK_SYSCALL 0
		224	# endif
		225	#endif
		226
168	#ifndef EV_USE_MONOTONIC	227	#ifndef EV_USE_MONOTONIC
		228	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		229	# define EV_USE_MONOTONIC 1
		230	# else
169	# define EV_USE_MONOTONIC 0	231	# define EV_USE_MONOTONIC 0
		232	# endif
170	#endif	233	#endif
171		234
172	#ifndef EV_USE_REALTIME	235	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	236	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	237	#endif
175		238
176	#ifndef EV_USE_NANOSLEEP	239	#ifndef EV_USE_NANOSLEEP
		240	# if _POSIX_C_SOURCE >= 199309L
		241	# define EV_USE_NANOSLEEP 1
		242	# else
177	# define EV_USE_NANOSLEEP 0	243	# define EV_USE_NANOSLEEP 0
		244	# endif
178	#endif	245	#endif
179		246
180	#ifndef EV_USE_SELECT	247	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	248	# define EV_USE_SELECT 1
182	#endif	249	#endif
…		…
235	# else	302	# else
236	# define EV_USE_EVENTFD 0	303	# define EV_USE_EVENTFD 0
237	# endif	304	# endif
238	#endif	305	#endif
239		306
		307	#ifndef EV_USE_SIGNALFD
		308	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		309	# define EV_USE_SIGNALFD 1
		310	# else
		311	# define EV_USE_SIGNALFD 0
		312	# endif
		313	#endif
		314
		315	#if 0 /* debugging */
		316	# define EV_VERIFY 3
		317	# define EV_USE_4HEAP 1
		318	# define EV_HEAP_CACHE_AT 1
		319	#endif
		320
		321	#ifndef EV_VERIFY
		322	# define EV_VERIFY !EV_MINIMAL
		323	#endif
		324
		325	#ifndef EV_USE_4HEAP
		326	# define EV_USE_4HEAP !EV_MINIMAL
		327	#endif
		328
		329	#ifndef EV_HEAP_CACHE_AT
		330	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		331	#endif
		332
		333	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		334	/* which makes programs even slower. might work on other unices, too. */
		335	#if EV_USE_CLOCK_SYSCALL
		336	# include <syscall.h>
		337	# ifdef SYS_clock_gettime
		338	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		339	# undef EV_USE_MONOTONIC
		340	# define EV_USE_MONOTONIC 1
		341	# else
		342	# undef EV_USE_CLOCK_SYSCALL
		343	# define EV_USE_CLOCK_SYSCALL 0
		344	# endif
		345	#endif
		346
240	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	347	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
		348
		349	#ifdef _AIX
		350	/* AIX has a completely broken poll.h header */
		351	# undef EV_USE_POLL
		352	# define EV_USE_POLL 0
		353	#endif
241		354
242	#ifndef CLOCK_MONOTONIC	355	#ifndef CLOCK_MONOTONIC
243	# undef EV_USE_MONOTONIC	356	# undef EV_USE_MONOTONIC
244	# define EV_USE_MONOTONIC 0	357	# define EV_USE_MONOTONIC 0
245	#endif	358	#endif
…		…
259	# include <sys/select.h>	372	# include <sys/select.h>
260	# endif	373	# endif
261	#endif	374	#endif
262		375
263	#if EV_USE_INOTIFY	376	#if EV_USE_INOTIFY
		377	# include <sys/utsname.h>
		378	# include <sys/statfs.h>
264	# include <sys/inotify.h>	379	# include <sys/inotify.h>
		380	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		381	# ifndef IN_DONT_FOLLOW
		382	# undef EV_USE_INOTIFY
		383	# define EV_USE_INOTIFY 0
		384	# endif
265	#endif	385	#endif
266		386
267	#if EV_SELECT_IS_WINSOCKET	387	#if EV_SELECT_IS_WINSOCKET
268	# include <winsock.h>	388	# include <winsock.h>
269	#endif	389	#endif
270		390
271	#if EV_USE_EVENTFD	391	#if EV_USE_EVENTFD
272	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	392	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273	# include <stdint.h>	393	# include <stdint.h>
		394	# ifndef EFD_NONBLOCK
		395	# define EFD_NONBLOCK O_NONBLOCK
		396	# endif
		397	# ifndef EFD_CLOEXEC
		398	# ifdef O_CLOEXEC
		399	# define EFD_CLOEXEC O_CLOEXEC
		400	# else
		401	# define EFD_CLOEXEC 02000000
		402	# endif
		403	# endif
274	# ifdef __cplusplus	404	# ifdef __cplusplus
275	extern "C" {	405	extern "C" {
276	# endif	406	# endif
277	int eventfd (unsigned int initval, int flags);	407	int eventfd (unsigned int initval, int flags);
278	# ifdef __cplusplus	408	# ifdef __cplusplus
279	}	409	}
280	# endif	410	# endif
281	#endif	411	#endif
282		412
		413	#if EV_USE_SIGNALFD
		414	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		415	# include <stdint.h>
		416	# ifndef SFD_NONBLOCK
		417	# define SFD_NONBLOCK O_NONBLOCK
		418	# endif
		419	# ifndef SFD_CLOEXEC
		420	# ifdef O_CLOEXEC
		421	# define SFD_CLOEXEC O_CLOEXEC
		422	# else
		423	# define SFD_CLOEXEC 02000000
		424	# endif
		425	# endif
		426	# ifdef __cplusplus
		427	extern "C" {
		428	# endif
		429	int signalfd (int fd, const sigset_t *mask, int flags);
		430
		431	struct signalfd_siginfo
		432	{
		433	uint32_t ssi_signo;
		434	char pad[128 - sizeof (uint32_t)];
		435	};
		436	# ifdef __cplusplus
		437	}
		438	# endif
		439	#endif
		440
		441
283	/**/	442	/**/
		443
		444	#if EV_VERIFY >= 3
		445	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		446	#else
		447	# define EV_FREQUENT_CHECK do { } while (0)
		448	#endif
284		449
285	/*	450	/*
286	* This is used to avoid floating point rounding problems.	451	* This is used to avoid floating point rounding problems.
287	* It is added to ev_rt_now when scheduling periodics	452	* It is added to ev_rt_now when scheduling periodics
288	* to ensure progress, time-wise, even when rounding	453	* to ensure progress, time-wise, even when rounding
…		…
292	*/	457	*/
293	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	458	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
294		459
295	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	460	#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) */	461	#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		462
299	#if __GNUC__ >= 4	463	#if __GNUC__ >= 4
300	# define expect(expr,value) __builtin_expect ((expr),(value))	464	# define expect(expr,value) __builtin_expect ((expr),(value))
301	# define noinline __attribute__ ((noinline))	465	# define noinline __attribute__ ((noinline))
302	#else	466	#else
…		…
315	# define inline_speed static noinline	479	# define inline_speed static noinline
316	#else	480	#else
317	# define inline_speed static inline	481	# define inline_speed static inline
318	#endif	482	#endif
319		483
320	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	484	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		485
		486	#if EV_MINPRI == EV_MAXPRI
		487	# define ABSPRI(w) (((W)w), 0)
		488	#else
321	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	489	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		490	#endif
322		491
323	#define EMPTY /* required for microsofts broken pseudo-c compiler */	492	#define EMPTY /* required for microsofts broken pseudo-c compiler */
324	#define EMPTY2(a,b) /* used to suppress some warnings */	493	#define EMPTY2(a,b) /* used to suppress some warnings */
325		494
326	typedef ev_watcher *W;	495	typedef ev_watcher *W;
…		…
328	typedef ev_watcher_time *WT;	497	typedef ev_watcher_time *WT;
329		498
330	#define ev_active(w) ((W)(w))->active	499	#define ev_active(w) ((W)(w))->active
331	#define ev_at(w) ((WT)(w))->at	500	#define ev_at(w) ((WT)(w))->at
332		501
333	#if EV_USE_MONOTONIC	502	#if EV_USE_REALTIME
334	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	503	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
335	/* giving it a reasonably high chance of working on typical architetcures */	504	/* giving it a reasonably high chance of working on typical architetcures */
		505	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		506	#endif
		507
		508	#if EV_USE_MONOTONIC
336	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	509	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		510	#endif
		511
		512	#ifndef EV_FD_TO_WIN32_HANDLE
		513	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		514	#endif
		515	#ifndef EV_WIN32_HANDLE_TO_FD
		516	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		517	#endif
		518	#ifndef EV_WIN32_CLOSE_FD
		519	# define EV_WIN32_CLOSE_FD(fd) close (fd)
337	#endif	520	#endif
338		521
339	#ifdef _WIN32	522	#ifdef _WIN32
340	# include "ev_win32.c"	523	# include "ev_win32.c"
341	#endif	524	#endif
…		…
349	{	532	{
350	syserr_cb = cb;	533	syserr_cb = cb;
351	}	534	}
352		535
353	static void noinline	536	static void noinline
354	syserr (const char *msg)	537	ev_syserr (const char *msg)
355	{	538	{
356	if (!msg)	539	if (!msg)
357	msg = "(libev) system error";	540	msg = "(libev) system error";
358		541
359	if (syserr_cb)	542	if (syserr_cb)
…		…
405	#define ev_malloc(size) ev_realloc (0, (size))	588	#define ev_malloc(size) ev_realloc (0, (size))
406	#define ev_free(ptr) ev_realloc ((ptr), 0)	589	#define ev_free(ptr) ev_realloc ((ptr), 0)
407		590
408	/*****************************************************************************/	591	/*****************************************************************************/
409		592
		593	/* set in reify when reification needed */
		594	#define EV_ANFD_REIFY 1
		595
		596	/* file descriptor info structure */
410	typedef struct	597	typedef struct
411	{	598	{
412	WL head;	599	WL head;
413	unsigned char events;	600	unsigned char events; /* the events watched for */
		601	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		602	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
414	unsigned char reify;	603	unsigned char unused;
		604	#if EV_USE_EPOLL
		605	unsigned int egen; /* generation counter to counter epoll bugs */
		606	#endif
415	#if EV_SELECT_IS_WINSOCKET	607	#if EV_SELECT_IS_WINSOCKET
416	SOCKET handle;	608	SOCKET handle;
417	#endif	609	#endif
418	} ANFD;	610	} ANFD;
419		611
		612	/* stores the pending event set for a given watcher */
420	typedef struct	613	typedef struct
421	{	614	{
422	W w;	615	W w;
423	int events;	616	int events; /* the pending event set for the given watcher */
424	} ANPENDING;	617	} ANPENDING;
425		618
426	#if EV_USE_INOTIFY	619	#if EV_USE_INOTIFY
		620	/* hash table entry per inotify-id */
427	typedef struct	621	typedef struct
428	{	622	{
429	WL head;	623	WL head;
430	} ANFS;	624	} ANFS;
		625	#endif
		626
		627	/* Heap Entry */
		628	#if EV_HEAP_CACHE_AT
		629	/* a heap element */
		630	typedef struct {
		631	ev_tstamp at;
		632	WT w;
		633	} ANHE;
		634
		635	#define ANHE_w(he) (he).w /* access watcher, read-write */
		636	#define ANHE_at(he) (he).at /* access cached at, read-only */
		637	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		638	#else
		639	/* a heap element */
		640	typedef WT ANHE;
		641
		642	#define ANHE_w(he) (he)
		643	#define ANHE_at(he) (he)->at
		644	#define ANHE_at_cache(he)
431	#endif	645	#endif
432		646
433	#if EV_MULTIPLICITY	647	#if EV_MULTIPLICITY
434		648
435	struct ev_loop	649	struct ev_loop
…		…
454		668
455	static int ev_default_loop_ptr;	669	static int ev_default_loop_ptr;
456		670
457	#endif	671	#endif
458		672
		673	#if EV_MINIMAL < 2
		674	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		675	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		676	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		677	#else
		678	# define EV_RELEASE_CB (void)0
		679	# define EV_ACQUIRE_CB (void)0
		680	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		681	#endif
		682
		683	#define EVUNLOOP_RECURSE 0x80
		684
459	/*****************************************************************************/	685	/*****************************************************************************/
460		686
		687	#ifndef EV_HAVE_EV_TIME
461	ev_tstamp	688	ev_tstamp
462	ev_time (void)	689	ev_time (void)
463	{	690	{
464	#if EV_USE_REALTIME	691	#if EV_USE_REALTIME
		692	if (expect_true (have_realtime))
		693	{
465	struct timespec ts;	694	struct timespec ts;
466	clock_gettime (CLOCK_REALTIME, &ts);	695	clock_gettime (CLOCK_REALTIME, &ts);
467	return ts.tv_sec + ts.tv_nsec * 1e-9;	696	return ts.tv_sec + ts.tv_nsec * 1e-9;
468	#else	697	}
		698	#endif
		699
469	struct timeval tv;	700	struct timeval tv;
470	gettimeofday (&tv, 0);	701	gettimeofday (&tv, 0);
471	return tv.tv_sec + tv.tv_usec * 1e-6;	702	return tv.tv_sec + tv.tv_usec * 1e-6;
472	#endif
473	}	703	}
		704	#endif
474		705
475	ev_tstamp inline_size	706	inline_size ev_tstamp
476	get_clock (void)	707	get_clock (void)
477	{	708	{
478	#if EV_USE_MONOTONIC	709	#if EV_USE_MONOTONIC
479	if (expect_true (have_monotonic))	710	if (expect_true (have_monotonic))
480	{	711	{
…		…
513	struct timeval tv;	744	struct timeval tv;
514		745
515	tv.tv_sec = (time_t)delay;	746	tv.tv_sec = (time_t)delay;
516	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	747	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
517		748
		749	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		750	/* something not guaranteed by newer posix versions, but guaranteed */
		751	/* by older ones */
518	select (0, 0, 0, 0, &tv);	752	select (0, 0, 0, 0, &tv);
519	#endif	753	#endif
520	}	754	}
521	}	755	}
522		756
523	/*****************************************************************************/	757	/*****************************************************************************/
524		758
525	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	759	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
526		760
527	int inline_size	761	/* find a suitable new size for the given array, */
		762	/* hopefully by rounding to a ncie-to-malloc size */
		763	inline_size int
528	array_nextsize (int elem, int cur, int cnt)	764	array_nextsize (int elem, int cur, int cnt)
529	{	765	{
530	int ncur = cur + 1;	766	int ncur = cur + 1;
531		767
532	do	768	do
…		…
549	array_realloc (int elem, void *base, int *cur, int cnt)	785	array_realloc (int elem, void *base, int *cur, int cnt)
550	{	786	{
551	*cur = array_nextsize (elem, *cur, cnt);	787	*cur = array_nextsize (elem, *cur, cnt);
552	return ev_realloc (base, elem * *cur);	788	return ev_realloc (base, elem * *cur);
553	}	789	}
		790
		791	#define array_init_zero(base,count) \
		792	memset ((void *)(base), 0, sizeof (*(base)) * (count))
554		793
555	#define array_needsize(type,base,cur,cnt,init) \	794	#define array_needsize(type,base,cur,cnt,init) \
556	if (expect_false ((cnt) > (cur))) \	795	if (expect_false ((cnt) > (cur))) \
557	{ \	796	{ \
558	int ocur_ = (cur); \	797	int ocur_ = (cur); \
…		…
570	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	809	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
571	}	810	}
572	#endif	811	#endif
573		812
574	#define array_free(stem, idx) \	813	#define array_free(stem, idx) \
575	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	814	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
576		815
577	/*****************************************************************************/	816	/*****************************************************************************/
		817
		818	/* dummy callback for pending events */
		819	static void noinline
		820	pendingcb (EV_P_ ev_prepare *w, int revents)
		821	{
		822	}
578		823
579	void noinline	824	void noinline
580	ev_feed_event (EV_P_ void *w, int revents)	825	ev_feed_event (EV_P_ void *w, int revents)
581	{	826	{
582	W w_ = (W)w;	827	W w_ = (W)w;
…		…
591	pendings [pri][w_->pending - 1].w = w_;	836	pendings [pri][w_->pending - 1].w = w_;
592	pendings [pri][w_->pending - 1].events = revents;	837	pendings [pri][w_->pending - 1].events = revents;
593	}	838	}
594	}	839	}
595		840
596	void inline_speed	841	inline_speed void
		842	feed_reverse (EV_P_ W w)
		843	{
		844	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		845	rfeeds [rfeedcnt++] = w;
		846	}
		847
		848	inline_size void
		849	feed_reverse_done (EV_P_ int revents)
		850	{
		851	do
		852	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		853	while (rfeedcnt);
		854	}
		855
		856	inline_speed void
597	queue_events (EV_P_ W *events, int eventcnt, int type)	857	queue_events (EV_P_ W *events, int eventcnt, int type)
598	{	858	{
599	int i;	859	int i;
600		860
601	for (i = 0; i < eventcnt; ++i)	861	for (i = 0; i < eventcnt; ++i)
602	ev_feed_event (EV_A_ events [i], type);	862	ev_feed_event (EV_A_ events [i], type);
603	}	863	}
604		864
605	/*****************************************************************************/	865	/*****************************************************************************/
606		866
607	void inline_size	867	inline_speed void
608	anfds_init (ANFD *base, int count)
609	{
610	while (count--)
611	{
612	base->head = 0;
613	base->events = EV_NONE;
614	base->reify = 0;
615
616	++base;
617	}
618	}
619
620	void inline_speed
621	fd_event (EV_P_ int fd, int revents)	868	fd_event_nc (EV_P_ int fd, int revents)
622	{	869	{
623	ANFD *anfd = anfds + fd;	870	ANFD *anfd = anfds + fd;
624	ev_io *w;	871	ev_io *w;
625		872
626	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	873	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
630	if (ev)	877	if (ev)
631	ev_feed_event (EV_A_ (W)w, ev);	878	ev_feed_event (EV_A_ (W)w, ev);
632	}	879	}
633	}	880	}
634		881
		882	/* do not submit kernel events for fds that have reify set */
		883	/* because that means they changed while we were polling for new events */
		884	inline_speed void
		885	fd_event (EV_P_ int fd, int revents)
		886	{
		887	ANFD *anfd = anfds + fd;
		888
		889	if (expect_true (!anfd->reify))
		890	fd_event_nc (EV_A_ fd, revents);
		891	}
		892
635	void	893	void
636	ev_feed_fd_event (EV_P_ int fd, int revents)	894	ev_feed_fd_event (EV_P_ int fd, int revents)
637	{	895	{
638	if (fd >= 0 && fd < anfdmax)	896	if (fd >= 0 && fd < anfdmax)
639	fd_event (EV_A_ fd, revents);	897	fd_event_nc (EV_A_ fd, revents);
640	}	898	}
641		899
642	void inline_size	900	/* make sure the external fd watch events are in-sync */
		901	/* with the kernel/libev internal state */
		902	inline_size void
643	fd_reify (EV_P)	903	fd_reify (EV_P)
644	{	904	{
645	int i;	905	int i;
646		906
647	for (i = 0; i < fdchangecnt; ++i)	907	for (i = 0; i < fdchangecnt; ++i)
…		…
656	events |= (unsigned char)w->events;	916	events |= (unsigned char)w->events;
657		917
658	#if EV_SELECT_IS_WINSOCKET	918	#if EV_SELECT_IS_WINSOCKET
659	if (events)	919	if (events)
660	{	920	{
661	unsigned long argp;	921	unsigned long arg;
662	#ifdef EV_FD_TO_WIN32_HANDLE
663	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	922	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
664	#else
665	anfd->handle = _get_osfhandle (fd);
666	#endif
667	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	923	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
668	}	924	}
669	#endif	925	#endif
670		926
671	{	927	{
672	unsigned char o_events = anfd->events;	928	unsigned char o_events = anfd->events;
673	unsigned char o_reify = anfd->reify;	929	unsigned char o_reify = anfd->reify;
674		930
675	anfd->reify = 0;	931	anfd->reify = 0;
676	anfd->events = events;	932	anfd->events = events;
677		933
678	if (o_events != events || o_reify & EV_IOFDSET)	934	if (o_events != events || o_reify & EV__IOFDSET)
679	backend_modify (EV_A_ fd, o_events, events);	935	backend_modify (EV_A_ fd, o_events, events);
680	}	936	}
681	}	937	}
682		938
683	fdchangecnt = 0;	939	fdchangecnt = 0;
684	}	940	}
685		941
686	void inline_size	942	/* something about the given fd changed */
		943	inline_size void
687	fd_change (EV_P_ int fd, int flags)	944	fd_change (EV_P_ int fd, int flags)
688	{	945	{
689	unsigned char reify = anfds [fd].reify;	946	unsigned char reify = anfds [fd].reify;
690	anfds [fd].reify |= flags;	947	anfds [fd].reify |= flags;
691		948
…		…
695	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	952	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
696	fdchanges [fdchangecnt - 1] = fd;	953	fdchanges [fdchangecnt - 1] = fd;
697	}	954	}
698	}	955	}
699		956
700	void inline_speed	957	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		958	inline_speed void
701	fd_kill (EV_P_ int fd)	959	fd_kill (EV_P_ int fd)
702	{	960	{
703	ev_io *w;	961	ev_io *w;
704		962
705	while ((w = (ev_io *)anfds [fd].head))	963	while ((w = (ev_io *)anfds [fd].head))
…		…
707	ev_io_stop (EV_A_ w);	965	ev_io_stop (EV_A_ w);
708	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	966	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
709	}	967	}
710	}	968	}
711		969
712	int inline_size	970	/* check whether the given fd is atcually valid, for error recovery */
		971	inline_size int
713	fd_valid (int fd)	972	fd_valid (int fd)
714	{	973	{
715	#ifdef _WIN32	974	#ifdef _WIN32
716	return _get_osfhandle (fd) != -1;	975	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
717	#else	976	#else
718	return fcntl (fd, F_GETFD) != -1;	977	return fcntl (fd, F_GETFD) != -1;
719	#endif	978	#endif
720	}	979	}
721		980
…		…
725	{	984	{
726	int fd;	985	int fd;
727		986
728	for (fd = 0; fd < anfdmax; ++fd)	987	for (fd = 0; fd < anfdmax; ++fd)
729	if (anfds [fd].events)	988	if (anfds [fd].events)
730	if (!fd_valid (fd) == -1 && errno == EBADF)	989	if (!fd_valid (fd) && errno == EBADF)
731	fd_kill (EV_A_ fd);	990	fd_kill (EV_A_ fd);
732	}	991	}
733		992
734	/* called on ENOMEM in select/poll to kill some fds and retry */	993	/* called on ENOMEM in select/poll to kill some fds and retry */
735	static void noinline	994	static void noinline
…		…
739		998
740	for (fd = anfdmax; fd--; )	999	for (fd = anfdmax; fd--; )
741	if (anfds [fd].events)	1000	if (anfds [fd].events)
742	{	1001	{
743	fd_kill (EV_A_ fd);	1002	fd_kill (EV_A_ fd);
744	return;	1003	break;
745	}	1004	}
746	}	1005	}
747		1006
748	/* usually called after fork if backend needs to re-arm all fds from scratch */	1007	/* usually called after fork if backend needs to re-arm all fds from scratch */
749	static void noinline	1008	static void noinline
…		…
753		1012
754	for (fd = 0; fd < anfdmax; ++fd)	1013	for (fd = 0; fd < anfdmax; ++fd)
755	if (anfds [fd].events)	1014	if (anfds [fd].events)
756	{	1015	{
757	anfds [fd].events = 0;	1016	anfds [fd].events = 0;
		1017	anfds [fd].emask = 0;
758	fd_change (EV_A_ fd, EV_IOFDSET | 1);	1018	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
759	}	1019	}
760	}	1020	}
761		1021
762	/*****************************************************************************/	1022	/*****************************************************************************/
		1023
		1024	/*
		1025	* the heap functions want a real array index. array index 0 uis guaranteed to not
		1026	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		1027	* the branching factor of the d-tree.
		1028	*/
763		1029
764	/*	1030	/*
765	* at the moment we allow libev the luxury of two heaps,	1031	* at the moment we allow libev the luxury of two heaps,
766	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap	1032	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
767	* which is more cache-efficient.	1033	* which is more cache-efficient.
768	* the difference is about 5% with 50000+ watchers.	1034	* the difference is about 5% with 50000+ watchers.
769	*/	1035	*/
770	#define USE_4HEAP !EV_MINIMAL
771	#define USE_4HEAP 1/* they do not work corretcly */
772	#if USE_4HEAP	1036	#if EV_USE_4HEAP
773		1037
774	#define DHEAP 4	1038	#define DHEAP 4
775	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	1039	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		1040	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		1041	#define UPHEAP_DONE(p,k) ((p) == (k))
776		1042
777	/* towards the root */	1043	/* away from the root */
778	void inline_speed	1044	inline_speed void
779	upheap (WT *heap, int k)	1045	downheap (ANHE *heap, int N, int k)
780	{	1046	{
781	WT w = heap [k];	1047	ANHE he = heap [k];
		1048	ANHE *E = heap + N + HEAP0;
782		1049
783	for (;;)	1050	for (;;)
784	{	1051	{
785	int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
786
787	if (p == k || heap [p]->at <= w->at)
788	break;
789
790	heap [k] = heap [p];
791	ev_active (heap [k]) = k;
792	k = p;
793	}
794
795	heap [k] = w;
796	ev_active (heap [k]) = k;
797	}
798
799	/* away from the root */
800	void inline_speed
801	downheap (WT *heap, int N, int k)
802	{
803	WT w = heap [k];
804	WT *E = heap + N + HEAP0;
805
806	for (;;)
807	{
808	ev_tstamp minat;	1052	ev_tstamp minat;
809	WT *minpos;	1053	ANHE *minpos;
810	WT *pos = heap + DHEAP * (k - HEAP0) + HEAP0;	1054	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
811		1055
812	// find minimum child	1056	/* find minimum child */
813	if (expect_true (pos + DHEAP - 1 < E))	1057	if (expect_true (pos + DHEAP - 1 < E))
814	{	1058	{
815	/* fast path */
816	(minpos = pos + 0), (minat = (*minpos)->at);	1059	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
817	if (pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);	1060	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
818	if (pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);	1061	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
819	if (pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);	1062	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1063	}
		1064	else if (pos < E)
		1065	{
		1066	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1067	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1068	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1069	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
820	}	1070	}
821	else	1071	else
822	{
823	/* slow path */
824	if (pos >= E)
825	break;
826	(minpos = pos + 0), (minat = (*minpos)->at);
827	if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
828	if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
829	if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
830	}
831
832	if (w->at <= minat)
833	break;	1072	break;
834		1073
835	ev_active (*minpos) = k;	1074	if (ANHE_at (he) <= minat)
		1075	break;
		1076
836	heap [k] = *minpos;	1077	heap [k] = *minpos;
		1078	ev_active (ANHE_w (*minpos)) = k;
837		1079
838	k = minpos - heap;	1080	k = minpos - heap;
839	}	1081	}
840		1082
841	heap [k] = w;	1083	heap [k] = he;
842	ev_active (heap [k]) = k;	1084	ev_active (ANHE_w (he)) = k;
843	}	1085	}
844		1086
845	#else // 4HEAP	1087	#else /* 4HEAP */
846		1088
847	#define HEAP0 1	1089	#define HEAP0 1
		1090	#define HPARENT(k) ((k) >> 1)
		1091	#define UPHEAP_DONE(p,k) (!(p))
848		1092
849	/* towards the root */	1093	/* away from the root */
850	void inline_speed	1094	inline_speed void
851	upheap (WT *heap, int k)	1095	downheap (ANHE *heap, int N, int k)
852	{	1096	{
853	WT w = heap [k];	1097	ANHE he = heap [k];
854		1098
855	for (;;)	1099	for (;;)
856	{	1100	{
857	int p = k >> 1;	1101	int c = k << 1;
858		1102
859	/* maybe we could use a dummy element at heap [0]? */	1103	if (c >= N + HEAP0)
860	if (!p || heap [p]->at <= w->at)
861	break;	1104	break;
862		1105
863	heap [k] = heap [p];	1106	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
864	ev_active (heap [k]) = k;	1107	? 1 : 0;
865	k = p;
866	}
867		1108
868	heap [k] = w;	1109	if (ANHE_at (he) <= ANHE_at (heap [c]))
869	ev_active (heap [k]) = k;
870	}
871
872	/* away from the root */
873	void inline_speed
874	downheap (WT *heap, int N, int k)
875	{
876	WT w = heap [k];
877
878	for (;;)
879	{
880	int c = k << 1;
881
882	if (c > N)
883	break;	1110	break;
884		1111
885	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
886	? 1 : 0;
887
888	if (w->at <= heap [c]->at)
889	break;
890
891	heap [k] = heap [c];	1112	heap [k] = heap [c];
892	((W)heap [k])->active = k;	1113	ev_active (ANHE_w (heap [k])) = k;
893		1114
894	k = c;	1115	k = c;
895	}	1116	}
896		1117
897	heap [k] = w;	1118	heap [k] = he;
		1119	ev_active (ANHE_w (he)) = k;
		1120	}
		1121	#endif
		1122
		1123	/* towards the root */
		1124	inline_speed void
		1125	upheap (ANHE *heap, int k)
		1126	{
		1127	ANHE he = heap [k];
		1128
		1129	for (;;)
		1130	{
		1131	int p = HPARENT (k);
		1132
		1133	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1134	break;
		1135
		1136	heap [k] = heap [p];
898	ev_active (heap [k]) = k;	1137	ev_active (ANHE_w (heap [k])) = k;
899	}	1138	k = p;
900	#endif	1139	}
901		1140
902	void inline_size	1141	heap [k] = he;
		1142	ev_active (ANHE_w (he)) = k;
		1143	}
		1144
		1145	/* move an element suitably so it is in a correct place */
		1146	inline_size void
903	adjustheap (WT *heap, int N, int k)	1147	adjustheap (ANHE *heap, int N, int k)
904	{	1148	{
		1149	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
905	upheap (heap, k);	1150	upheap (heap, k);
		1151	else
906	downheap (heap, N, k);	1152	downheap (heap, N, k);
		1153	}
		1154
		1155	/* rebuild the heap: this function is used only once and executed rarely */
		1156	inline_size void
		1157	reheap (ANHE *heap, int N)
		1158	{
		1159	int i;
		1160
		1161	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1162	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1163	for (i = 0; i < N; ++i)
		1164	upheap (heap, i + HEAP0);
907	}	1165	}
908		1166
909	/*****************************************************************************/	1167	/*****************************************************************************/
910		1168
		1169	/* associate signal watchers to a signal signal */
911	typedef struct	1170	typedef struct
912	{	1171	{
		1172	EV_ATOMIC_T pending;
		1173	#if EV_MULTIPLICITY
		1174	EV_P;
		1175	#endif
913	WL head;	1176	WL head;
914	EV_ATOMIC_T gotsig;
915	} ANSIG;	1177	} ANSIG;
916		1178
917	static ANSIG *signals;	1179	static ANSIG signals [EV_NSIG - 1];
918	static int signalmax;
919
920	static EV_ATOMIC_T gotsig;
921
922	void inline_size
923	signals_init (ANSIG *base, int count)
924	{
925	while (count--)
926	{
927	base->head = 0;
928	base->gotsig = 0;
929
930	++base;
931	}
932	}
933		1180
934	/*****************************************************************************/	1181	/*****************************************************************************/
935		1182
936	void inline_speed	1183	/* used to prepare libev internal fd's */
		1184	/* this is not fork-safe */
		1185	inline_speed void
937	fd_intern (int fd)	1186	fd_intern (int fd)
938	{	1187	{
939	#ifdef _WIN32	1188	#ifdef _WIN32
940	int arg = 1;	1189	unsigned long arg = 1;
941	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1190	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
942	#else	1191	#else
943	fcntl (fd, F_SETFD, FD_CLOEXEC);	1192	fcntl (fd, F_SETFD, FD_CLOEXEC);
944	fcntl (fd, F_SETFL, O_NONBLOCK);	1193	fcntl (fd, F_SETFL, O_NONBLOCK);
945	#endif	1194	#endif
946	}	1195	}
947		1196
948	static void noinline	1197	static void noinline
949	evpipe_init (EV_P)	1198	evpipe_init (EV_P)
950	{	1199	{
951	if (!ev_is_active (&pipeev))	1200	if (!ev_is_active (&pipe_w))
952	{	1201	{
953	#if EV_USE_EVENTFD	1202	#if EV_USE_EVENTFD
		1203	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1204	if (evfd < 0 && errno == EINVAL)
954	if ((evfd = eventfd (0, 0)) >= 0)	1205	evfd = eventfd (0, 0);
		1206
		1207	if (evfd >= 0)
955	{	1208	{
956	evpipe [0] = -1;	1209	evpipe [0] = -1;
957	fd_intern (evfd);	1210	fd_intern (evfd); /* doing it twice doesn't hurt */
958	ev_io_set (&pipeev, evfd, EV_READ);	1211	ev_io_set (&pipe_w, evfd, EV_READ);
959	}	1212	}
960	else	1213	else
961	#endif	1214	#endif
962	{	1215	{
963	while (pipe (evpipe))	1216	while (pipe (evpipe))
964	syserr ("(libev) error creating signal/async pipe");	1217	ev_syserr ("(libev) error creating signal/async pipe");
965		1218
966	fd_intern (evpipe [0]);	1219	fd_intern (evpipe [0]);
967	fd_intern (evpipe [1]);	1220	fd_intern (evpipe [1]);
968	ev_io_set (&pipeev, evpipe [0], EV_READ);	1221	ev_io_set (&pipe_w, evpipe [0], EV_READ);
969	}	1222	}
970		1223
971	ev_io_start (EV_A_ &pipeev);	1224	ev_io_start (EV_A_ &pipe_w);
972	ev_unref (EV_A); /* watcher should not keep loop alive */	1225	ev_unref (EV_A); /* watcher should not keep loop alive */
973	}	1226	}
974	}	1227	}
975		1228
976	void inline_size	1229	inline_size void
977	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1230	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
978	{	1231	{
979	if (!*flag)	1232	if (!*flag)
980	{	1233	{
981	int old_errno = errno; /* save errno because write might clobber it */	1234	int old_errno = errno; /* save errno because write might clobber it */
…		…
994		1247
995	errno = old_errno;	1248	errno = old_errno;
996	}	1249	}
997	}	1250	}
998		1251
		1252	/* called whenever the libev signal pipe */
		1253	/* got some events (signal, async) */
999	static void	1254	static void
1000	pipecb (EV_P_ ev_io *iow, int revents)	1255	pipecb (EV_P_ ev_io *iow, int revents)
1001	{	1256	{
		1257	int i;
		1258
1002	#if EV_USE_EVENTFD	1259	#if EV_USE_EVENTFD
1003	if (evfd >= 0)	1260	if (evfd >= 0)
1004	{	1261	{
1005	uint64_t counter;	1262	uint64_t counter;
1006	read (evfd, &counter, sizeof (uint64_t));	1263	read (evfd, &counter, sizeof (uint64_t));
…		…
1010	{	1267	{
1011	char dummy;	1268	char dummy;
1012	read (evpipe [0], &dummy, 1);	1269	read (evpipe [0], &dummy, 1);
1013	}	1270	}
1014		1271
1015	if (gotsig && ev_is_default_loop (EV_A))	1272	if (sig_pending)
1016	{	1273	{
1017	int signum;	1274	sig_pending = 0;
1018	gotsig = 0;
1019		1275
1020	for (signum = signalmax; signum--; )	1276	for (i = EV_NSIG - 1; i--; )
1021	if (signals [signum].gotsig)	1277	if (expect_false (signals [i].pending))
1022	ev_feed_signal_event (EV_A_ signum + 1);	1278	ev_feed_signal_event (EV_A_ i + 1);
1023	}	1279	}
1024		1280
1025	#if EV_ASYNC_ENABLE	1281	#if EV_ASYNC_ENABLE
1026	if (gotasync)	1282	if (async_pending)
1027	{	1283	{
1028	int i;	1284	async_pending = 0;
1029	gotasync = 0;
1030		1285
1031	for (i = asynccnt; i--; )	1286	for (i = asynccnt; i--; )
1032	if (asyncs [i]->sent)	1287	if (asyncs [i]->sent)
1033	{	1288	{
1034	asyncs [i]->sent = 0;	1289	asyncs [i]->sent = 0;
…		…
1042		1297
1043	static void	1298	static void
1044	ev_sighandler (int signum)	1299	ev_sighandler (int signum)
1045	{	1300	{
1046	#if EV_MULTIPLICITY	1301	#if EV_MULTIPLICITY
1047	struct ev_loop *loop = &default_loop_struct;	1302	EV_P = signals [signum - 1].loop;
1048	#endif	1303	#endif
1049		1304
1050	#if _WIN32	1305	#ifdef _WIN32
1051	signal (signum, ev_sighandler);	1306	signal (signum, ev_sighandler);
1052	#endif	1307	#endif
1053		1308
1054	signals [signum - 1].gotsig = 1;	1309	signals [signum - 1].pending = 1;
1055	evpipe_write (EV_A_ &gotsig);	1310	evpipe_write (EV_A_ &sig_pending);
1056	}	1311	}
1057		1312
1058	void noinline	1313	void noinline
1059	ev_feed_signal_event (EV_P_ int signum)	1314	ev_feed_signal_event (EV_P_ int signum)
1060	{	1315	{
1061	WL w;	1316	WL w;
1062		1317
		1318	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1319	return;
		1320
		1321	--signum;
		1322
1063	#if EV_MULTIPLICITY	1323	#if EV_MULTIPLICITY
1064	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1324	/* it is permissible to try to feed a signal to the wrong loop */
1065	#endif	1325	/* or, likely more useful, feeding a signal nobody is waiting for */
1066		1326
1067	--signum;	1327	if (expect_false (signals [signum].loop != EV_A))
1068
1069	if (signum < 0 || signum >= signalmax)
1070	return;	1328	return;
		1329	#endif
1071		1330
1072	signals [signum].gotsig = 0;	1331	signals [signum].pending = 0;
1073		1332
1074	for (w = signals [signum].head; w; w = w->next)	1333	for (w = signals [signum].head; w; w = w->next)
1075	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1334	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1076	}	1335	}
1077		1336
		1337	#if EV_USE_SIGNALFD
		1338	static void
		1339	sigfdcb (EV_P_ ev_io *iow, int revents)
		1340	{
		1341	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1342
		1343	for (;;)
		1344	{
		1345	ssize_t res = read (sigfd, si, sizeof (si));
		1346
		1347	/* not ISO-C, as res might be -1, but works with SuS */
		1348	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1349	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1350
		1351	if (res < (ssize_t)sizeof (si))
		1352	break;
		1353	}
		1354	}
		1355	#endif
		1356
1078	/*****************************************************************************/	1357	/*****************************************************************************/
1079		1358
1080	static WL childs [EV_PID_HASHSIZE];	1359	static WL childs [EV_PID_HASHSIZE];
1081		1360
1082	#ifndef _WIN32	1361	#ifndef _WIN32
…		…
1085		1364
1086	#ifndef WIFCONTINUED	1365	#ifndef WIFCONTINUED
1087	# define WIFCONTINUED(status) 0	1366	# define WIFCONTINUED(status) 0
1088	#endif	1367	#endif
1089		1368
1090	void inline_speed	1369	/* handle a single child status event */
		1370	inline_speed void
1091	child_reap (EV_P_ int chain, int pid, int status)	1371	child_reap (EV_P_ int chain, int pid, int status)
1092	{	1372	{
1093	ev_child *w;	1373	ev_child *w;
1094	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1374	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1095		1375
…		…
1108		1388
1109	#ifndef WCONTINUED	1389	#ifndef WCONTINUED
1110	# define WCONTINUED 0	1390	# define WCONTINUED 0
1111	#endif	1391	#endif
1112		1392
		1393	/* called on sigchld etc., calls waitpid */
1113	static void	1394	static void
1114	childcb (EV_P_ ev_signal *sw, int revents)	1395	childcb (EV_P_ ev_signal *sw, int revents)
1115	{	1396	{
1116	int pid, status;	1397	int pid, status;
1117		1398
…		…
1198	/* kqueue is borked on everything but netbsd apparently */	1479	/* kqueue is borked on everything but netbsd apparently */
1199	/* it usually doesn't work correctly on anything but sockets and pipes */	1480	/* it usually doesn't work correctly on anything but sockets and pipes */
1200	flags &= ~EVBACKEND_KQUEUE;	1481	flags &= ~EVBACKEND_KQUEUE;
1201	#endif	1482	#endif
1202	#ifdef __APPLE__	1483	#ifdef __APPLE__
1203	// flags &= ~EVBACKEND_KQUEUE; for documentation	1484	/* only select works correctly on that "unix-certified" platform */
1204	flags &= ~EVBACKEND_POLL;	1485	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1486	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1205	#endif	1487	#endif
1206		1488
1207	return flags;	1489	return flags;
1208	}	1490	}
1209		1491
…		…
1223	ev_backend (EV_P)	1505	ev_backend (EV_P)
1224	{	1506	{
1225	return backend;	1507	return backend;
1226	}	1508	}
1227		1509
		1510	#if EV_MINIMAL < 2
1228	unsigned int	1511	unsigned int
1229	ev_loop_count (EV_P)	1512	ev_loop_count (EV_P)
1230	{	1513	{
1231	return loop_count;	1514	return loop_count;
1232	}	1515	}
1233		1516
		1517	unsigned int
		1518	ev_loop_depth (EV_P)
		1519	{
		1520	return loop_depth;
		1521	}
		1522
1234	void	1523	void
1235	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1524	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1236	{	1525	{
1237	io_blocktime = interval;	1526	io_blocktime = interval;
1238	}	1527	}
…		…
1241	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1530	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1242	{	1531	{
1243	timeout_blocktime = interval;	1532	timeout_blocktime = interval;
1244	}	1533	}
1245		1534
		1535	void
		1536	ev_set_userdata (EV_P_ void *data)
		1537	{
		1538	userdata = data;
		1539	}
		1540
		1541	void *
		1542	ev_userdata (EV_P)
		1543	{
		1544	return userdata;
		1545	}
		1546
		1547	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1548	{
		1549	invoke_cb = invoke_pending_cb;
		1550	}
		1551
		1552	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1553	{
		1554	release_cb = release;
		1555	acquire_cb = acquire;
		1556	}
		1557	#endif
		1558
		1559	/* initialise a loop structure, must be zero-initialised */
1246	static void noinline	1560	static void noinline
1247	loop_init (EV_P_ unsigned int flags)	1561	loop_init (EV_P_ unsigned int flags)
1248	{	1562	{
1249	if (!backend)	1563	if (!backend)
1250	{	1564	{
		1565	#if EV_USE_REALTIME
		1566	if (!have_realtime)
		1567	{
		1568	struct timespec ts;
		1569
		1570	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1571	have_realtime = 1;
		1572	}
		1573	#endif
		1574
1251	#if EV_USE_MONOTONIC	1575	#if EV_USE_MONOTONIC
		1576	if (!have_monotonic)
1252	{	1577	{
1253	struct timespec ts;	1578	struct timespec ts;
		1579
1254	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1580	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1255	have_monotonic = 1;	1581	have_monotonic = 1;
1256	}	1582	}
1257	#endif	1583	#endif
		1584
		1585	/* pid check not overridable via env */
		1586	#ifndef _WIN32
		1587	if (flags & EVFLAG_FORKCHECK)
		1588	curpid = getpid ();
		1589	#endif
		1590
		1591	if (!(flags & EVFLAG_NOENV)
		1592	&& !enable_secure ()
		1593	&& getenv ("LIBEV_FLAGS"))
		1594	flags = atoi (getenv ("LIBEV_FLAGS"));
1258		1595
1259	ev_rt_now = ev_time ();	1596	ev_rt_now = ev_time ();
1260	mn_now = get_clock ();	1597	mn_now = get_clock ();
1261	now_floor = mn_now;	1598	now_floor = mn_now;
1262	rtmn_diff = ev_rt_now - mn_now;	1599	rtmn_diff = ev_rt_now - mn_now;
		1600	#if EV_MINIMAL < 2
		1601	invoke_cb = ev_invoke_pending;
		1602	#endif
1263		1603
1264	io_blocktime = 0.;	1604	io_blocktime = 0.;
1265	timeout_blocktime = 0.;	1605	timeout_blocktime = 0.;
1266	backend = 0;	1606	backend = 0;
1267	backend_fd = -1;	1607	backend_fd = -1;
1268	gotasync = 0;	1608	sig_pending = 0;
		1609	#if EV_ASYNC_ENABLE
		1610	async_pending = 0;
		1611	#endif
1269	#if EV_USE_INOTIFY	1612	#if EV_USE_INOTIFY
1270	fs_fd = -2;	1613	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1271	#endif	1614	#endif
1272		1615	#if EV_USE_SIGNALFD
1273	/* pid check not overridable via env */	1616	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1274	#ifndef _WIN32
1275	if (flags & EVFLAG_FORKCHECK)
1276	curpid = getpid ();
1277	#endif	1617	#endif
1278
1279	if (!(flags & EVFLAG_NOENV)
1280	&& !enable_secure ()
1281	&& getenv ("LIBEV_FLAGS"))
1282	flags = atoi (getenv ("LIBEV_FLAGS"));
1283		1618
1284	if (!(flags & 0x0000ffffU))	1619	if (!(flags & 0x0000ffffU))
1285	flags |= ev_recommended_backends ();	1620	flags |= ev_recommended_backends ();
1286		1621
1287	#if EV_USE_PORT	1622	#if EV_USE_PORT
…		…
1298	#endif	1633	#endif
1299	#if EV_USE_SELECT	1634	#if EV_USE_SELECT
1300	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1635	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1301	#endif	1636	#endif
1302		1637
		1638	ev_prepare_init (&pending_w, pendingcb);
		1639
1303	ev_init (&pipeev, pipecb);	1640	ev_init (&pipe_w, pipecb);
1304	ev_set_priority (&pipeev, EV_MAXPRI);	1641	ev_set_priority (&pipe_w, EV_MAXPRI);
1305	}	1642	}
1306	}	1643	}
1307		1644
		1645	/* free up a loop structure */
1308	static void noinline	1646	static void noinline
1309	loop_destroy (EV_P)	1647	loop_destroy (EV_P)
1310	{	1648	{
1311	int i;	1649	int i;
1312		1650
1313	if (ev_is_active (&pipeev))	1651	if (ev_is_active (&pipe_w))
1314	{	1652	{
1315	ev_ref (EV_A); /* signal watcher */	1653	/*ev_ref (EV_A);*/
1316	ev_io_stop (EV_A_ &pipeev);	1654	/*ev_io_stop (EV_A_ &pipe_w);*/
1317		1655
1318	#if EV_USE_EVENTFD	1656	#if EV_USE_EVENTFD
1319	if (evfd >= 0)	1657	if (evfd >= 0)
1320	close (evfd);	1658	close (evfd);
1321	#endif	1659	#endif
1322		1660
1323	if (evpipe [0] >= 0)	1661	if (evpipe [0] >= 0)
1324	{	1662	{
1325	close (evpipe [0]);	1663	EV_WIN32_CLOSE_FD (evpipe [0]);
1326	close (evpipe [1]);	1664	EV_WIN32_CLOSE_FD (evpipe [1]);
1327	}	1665	}
1328	}	1666	}
		1667
		1668	#if EV_USE_SIGNALFD
		1669	if (ev_is_active (&sigfd_w))
		1670	close (sigfd);
		1671	#endif
1329		1672
1330	#if EV_USE_INOTIFY	1673	#if EV_USE_INOTIFY
1331	if (fs_fd >= 0)	1674	if (fs_fd >= 0)
1332	close (fs_fd);	1675	close (fs_fd);
1333	#endif	1676	#endif
…		…
1357	#if EV_IDLE_ENABLE	1700	#if EV_IDLE_ENABLE
1358	array_free (idle, [i]);	1701	array_free (idle, [i]);
1359	#endif	1702	#endif
1360	}	1703	}
1361		1704
1362	ev_free (anfds); anfdmax = 0;	1705	ev_free (anfds); anfds = 0; anfdmax = 0;
1363		1706
1364	/* have to use the microsoft-never-gets-it-right macro */	1707	/* have to use the microsoft-never-gets-it-right macro */
		1708	array_free (rfeed, EMPTY);
1365	array_free (fdchange, EMPTY);	1709	array_free (fdchange, EMPTY);
1366	array_free (timer, EMPTY);	1710	array_free (timer, EMPTY);
1367	#if EV_PERIODIC_ENABLE	1711	#if EV_PERIODIC_ENABLE
1368	array_free (periodic, EMPTY);	1712	array_free (periodic, EMPTY);
1369	#endif	1713	#endif
…		…
1378		1722
1379	backend = 0;	1723	backend = 0;
1380	}	1724	}
1381		1725
1382	#if EV_USE_INOTIFY	1726	#if EV_USE_INOTIFY
1383	void inline_size infy_fork (EV_P);	1727	inline_size void infy_fork (EV_P);
1384	#endif	1728	#endif
1385		1729
1386	void inline_size	1730	inline_size void
1387	loop_fork (EV_P)	1731	loop_fork (EV_P)
1388	{	1732	{
1389	#if EV_USE_PORT	1733	#if EV_USE_PORT
1390	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1734	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1391	#endif	1735	#endif
…		…
1397	#endif	1741	#endif
1398	#if EV_USE_INOTIFY	1742	#if EV_USE_INOTIFY
1399	infy_fork (EV_A);	1743	infy_fork (EV_A);
1400	#endif	1744	#endif
1401		1745
1402	if (ev_is_active (&pipeev))	1746	if (ev_is_active (&pipe_w))
1403	{	1747	{
1404	/* this "locks" the handlers against writing to the pipe */	1748	/* this "locks" the handlers against writing to the pipe */
1405	/* while we modify the fd vars */	1749	/* while we modify the fd vars */
1406	gotsig = 1;	1750	sig_pending = 1;
1407	#if EV_ASYNC_ENABLE	1751	#if EV_ASYNC_ENABLE
1408	gotasync = 1;	1752	async_pending = 1;
1409	#endif	1753	#endif
1410		1754
1411	ev_ref (EV_A);	1755	ev_ref (EV_A);
1412	ev_io_stop (EV_A_ &pipeev);	1756	ev_io_stop (EV_A_ &pipe_w);
1413		1757
1414	#if EV_USE_EVENTFD	1758	#if EV_USE_EVENTFD
1415	if (evfd >= 0)	1759	if (evfd >= 0)
1416	close (evfd);	1760	close (evfd);
1417	#endif	1761	#endif
1418		1762
1419	if (evpipe [0] >= 0)	1763	if (evpipe [0] >= 0)
1420	{	1764	{
1421	close (evpipe [0]);	1765	EV_WIN32_CLOSE_FD (evpipe [0]);
1422	close (evpipe [1]);	1766	EV_WIN32_CLOSE_FD (evpipe [1]);
1423	}	1767	}
1424		1768
1425	evpipe_init (EV_A);	1769	evpipe_init (EV_A);
1426	/* now iterate over everything, in case we missed something */	1770	/* now iterate over everything, in case we missed something */
1427	pipecb (EV_A_ &pipeev, EV_READ);	1771	pipecb (EV_A_ &pipe_w, EV_READ);
1428	}	1772	}
1429		1773
1430	postfork = 0;	1774	postfork = 0;
1431	}	1775	}
1432		1776
1433	#if EV_MULTIPLICITY	1777	#if EV_MULTIPLICITY
		1778
1434	struct ev_loop *	1779	struct ev_loop *
1435	ev_loop_new (unsigned int flags)	1780	ev_loop_new (unsigned int flags)
1436	{	1781	{
1437	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1782	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1438		1783
1439	memset (loop, 0, sizeof (struct ev_loop));	1784	memset (EV_A, 0, sizeof (struct ev_loop));
1440
1441	loop_init (EV_A_ flags);	1785	loop_init (EV_A_ flags);
1442		1786
1443	if (ev_backend (EV_A))	1787	if (ev_backend (EV_A))
1444	return loop;	1788	return EV_A;
1445		1789
1446	return 0;	1790	return 0;
1447	}	1791	}
1448		1792
1449	void	1793	void
…		…
1455		1799
1456	void	1800	void
1457	ev_loop_fork (EV_P)	1801	ev_loop_fork (EV_P)
1458	{	1802	{
1459	postfork = 1; /* must be in line with ev_default_fork */	1803	postfork = 1; /* must be in line with ev_default_fork */
		1804	}
		1805	#endif /* multiplicity */
		1806
		1807	#if EV_VERIFY
		1808	static void noinline
		1809	verify_watcher (EV_P_ W w)
		1810	{
		1811	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1812
		1813	if (w->pending)
		1814	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1815	}
		1816
		1817	static void noinline
		1818	verify_heap (EV_P_ ANHE *heap, int N)
		1819	{
		1820	int i;
		1821
		1822	for (i = HEAP0; i < N + HEAP0; ++i)
		1823	{
		1824	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1825	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1826	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1827
		1828	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1829	}
		1830	}
		1831
		1832	static void noinline
		1833	array_verify (EV_P_ W *ws, int cnt)
		1834	{
		1835	while (cnt--)
		1836	{
		1837	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1838	verify_watcher (EV_A_ ws [cnt]);
		1839	}
		1840	}
		1841	#endif
		1842
		1843	#if EV_MINIMAL < 2
		1844	void
		1845	ev_loop_verify (EV_P)
		1846	{
		1847	#if EV_VERIFY
		1848	int i;
		1849	WL w;
		1850
		1851	assert (activecnt >= -1);
		1852
		1853	assert (fdchangemax >= fdchangecnt);
		1854	for (i = 0; i < fdchangecnt; ++i)
		1855	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1856
		1857	assert (anfdmax >= 0);
		1858	for (i = 0; i < anfdmax; ++i)
		1859	for (w = anfds [i].head; w; w = w->next)
		1860	{
		1861	verify_watcher (EV_A_ (W)w);
		1862	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1863	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1864	}
		1865
		1866	assert (timermax >= timercnt);
		1867	verify_heap (EV_A_ timers, timercnt);
		1868
		1869	#if EV_PERIODIC_ENABLE
		1870	assert (periodicmax >= periodiccnt);
		1871	verify_heap (EV_A_ periodics, periodiccnt);
		1872	#endif
		1873
		1874	for (i = NUMPRI; i--; )
		1875	{
		1876	assert (pendingmax [i] >= pendingcnt [i]);
		1877	#if EV_IDLE_ENABLE
		1878	assert (idleall >= 0);
		1879	assert (idlemax [i] >= idlecnt [i]);
		1880	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1881	#endif
		1882	}
		1883
		1884	#if EV_FORK_ENABLE
		1885	assert (forkmax >= forkcnt);
		1886	array_verify (EV_A_ (W *)forks, forkcnt);
		1887	#endif
		1888
		1889	#if EV_ASYNC_ENABLE
		1890	assert (asyncmax >= asynccnt);
		1891	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1892	#endif
		1893
		1894	assert (preparemax >= preparecnt);
		1895	array_verify (EV_A_ (W *)prepares, preparecnt);
		1896
		1897	assert (checkmax >= checkcnt);
		1898	array_verify (EV_A_ (W *)checks, checkcnt);
		1899
		1900	# if 0
		1901	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1902	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		1903	# endif
		1904	#endif
1460	}	1905	}
1461	#endif	1906	#endif
1462		1907
1463	#if EV_MULTIPLICITY	1908	#if EV_MULTIPLICITY
1464	struct ev_loop *	1909	struct ev_loop *
…		…
1469	#endif	1914	#endif
1470	{	1915	{
1471	if (!ev_default_loop_ptr)	1916	if (!ev_default_loop_ptr)
1472	{	1917	{
1473	#if EV_MULTIPLICITY	1918	#if EV_MULTIPLICITY
1474	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1919	EV_P = ev_default_loop_ptr = &default_loop_struct;
1475	#else	1920	#else
1476	ev_default_loop_ptr = 1;	1921	ev_default_loop_ptr = 1;
1477	#endif	1922	#endif
1478		1923
1479	loop_init (EV_A_ flags);	1924	loop_init (EV_A_ flags);
…		…
1496		1941
1497	void	1942	void
1498	ev_default_destroy (void)	1943	ev_default_destroy (void)
1499	{	1944	{
1500	#if EV_MULTIPLICITY	1945	#if EV_MULTIPLICITY
1501	struct ev_loop *loop = ev_default_loop_ptr;	1946	EV_P = ev_default_loop_ptr;
1502	#endif	1947	#endif
		1948
		1949	ev_default_loop_ptr = 0;
1503		1950
1504	#ifndef _WIN32	1951	#ifndef _WIN32
1505	ev_ref (EV_A); /* child watcher */	1952	ev_ref (EV_A); /* child watcher */
1506	ev_signal_stop (EV_A_ &childev);	1953	ev_signal_stop (EV_A_ &childev);
1507	#endif	1954	#endif
…		…
1511		1958
1512	void	1959	void
1513	ev_default_fork (void)	1960	ev_default_fork (void)
1514	{	1961	{
1515	#if EV_MULTIPLICITY	1962	#if EV_MULTIPLICITY
1516	struct ev_loop *loop = ev_default_loop_ptr;	1963	EV_P = ev_default_loop_ptr;
1517	#endif	1964	#endif
1518		1965
1519	if (backend)
1520	postfork = 1; /* must be in line with ev_loop_fork */	1966	postfork = 1; /* must be in line with ev_loop_fork */
1521	}	1967	}
1522		1968
1523	/*****************************************************************************/	1969	/*****************************************************************************/
1524		1970
1525	void	1971	void
1526	ev_invoke (EV_P_ void *w, int revents)	1972	ev_invoke (EV_P_ void *w, int revents)
1527	{	1973	{
1528	EV_CB_INVOKE ((W)w, revents);	1974	EV_CB_INVOKE ((W)w, revents);
1529	}	1975	}
1530		1976
1531	void inline_speed	1977	unsigned int
1532	call_pending (EV_P)	1978	ev_pending_count (EV_P)
		1979	{
		1980	int pri;
		1981	unsigned int count = 0;
		1982
		1983	for (pri = NUMPRI; pri--; )
		1984	count += pendingcnt [pri];
		1985
		1986	return count;
		1987	}
		1988
		1989	void noinline
		1990	ev_invoke_pending (EV_P)
1533	{	1991	{
1534	int pri;	1992	int pri;
1535		1993
1536	for (pri = NUMPRI; pri--; )	1994	for (pri = NUMPRI; pri--; )
1537	while (pendingcnt [pri])	1995	while (pendingcnt [pri])
1538	{	1996	{
1539	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1997	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1540		1998
1541	if (expect_true (p->w))
1542	{
1543	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1999	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		2000	/* ^ this is no longer true, as pending_w could be here */
1544		2001
1545	p->w->pending = 0;	2002	p->w->pending = 0;
1546	EV_CB_INVOKE (p->w, p->events);	2003	EV_CB_INVOKE (p->w, p->events);
1547	}	2004	EV_FREQUENT_CHECK;
1548	}	2005	}
1549	}	2006	}
1550		2007
1551	#if EV_IDLE_ENABLE	2008	#if EV_IDLE_ENABLE
1552	void inline_size	2009	/* make idle watchers pending. this handles the "call-idle */
		2010	/* only when higher priorities are idle" logic */
		2011	inline_size void
1553	idle_reify (EV_P)	2012	idle_reify (EV_P)
1554	{	2013	{
1555	if (expect_false (idleall))	2014	if (expect_false (idleall))
1556	{	2015	{
1557	int pri;	2016	int pri;
…		…
1569	}	2028	}
1570	}	2029	}
1571	}	2030	}
1572	#endif	2031	#endif
1573		2032
1574	void inline_size	2033	/* make timers pending */
		2034	inline_size void
1575	timers_reify (EV_P)	2035	timers_reify (EV_P)
1576	{	2036	{
		2037	EV_FREQUENT_CHECK;
		2038
1577	while (timercnt && ev_at (timers [HEAP0]) <= mn_now)	2039	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1578	{	2040	{
1579	ev_timer *w = (ev_timer *)timers [HEAP0];	2041	do
1580
1581	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1582
1583	/* first reschedule or stop timer */
1584	if (w->repeat)
1585	{	2042	{
		2043	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2044
		2045	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2046
		2047	/* first reschedule or stop timer */
		2048	if (w->repeat)
		2049	{
		2050	ev_at (w) += w->repeat;
		2051	if (ev_at (w) < mn_now)
		2052	ev_at (w) = mn_now;
		2053
1586	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	2054	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1587		2055
1588	ev_at (w) += w->repeat;	2056	ANHE_at_cache (timers [HEAP0]);
1589	if (ev_at (w) < mn_now)
1590	ev_at (w) = mn_now;
1591
1592	downheap (timers, timercnt, HEAP0);	2057	downheap (timers, timercnt, HEAP0);
		2058	}
		2059	else
		2060	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2061
		2062	EV_FREQUENT_CHECK;
		2063	feed_reverse (EV_A_ (W)w);
1593	}	2064	}
1594	else	2065	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1595	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1596		2066
1597	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	2067	feed_reverse_done (EV_A_ EV_TIMEOUT);
1598	}	2068	}
1599	}	2069	}
1600		2070
1601	#if EV_PERIODIC_ENABLE	2071	#if EV_PERIODIC_ENABLE
1602	void inline_size	2072	/* make periodics pending */
		2073	inline_size void
1603	periodics_reify (EV_P)	2074	periodics_reify (EV_P)
1604	{	2075	{
		2076	EV_FREQUENT_CHECK;
		2077
1605	while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now)	2078	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1606	{	2079	{
1607	ev_periodic *w = (ev_periodic *)periodics [HEAP0];	2080	int feed_count = 0;
1608		2081
1609	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	2082	do
1610
1611	/* first reschedule or stop timer */
1612	if (w->reschedule_cb)
1613	{	2083	{
		2084	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2085
		2086	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2087
		2088	/* first reschedule or stop timer */
		2089	if (w->reschedule_cb)
		2090	{
1614	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);	2091	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2092
1615	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));	2093	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		2094
		2095	ANHE_at_cache (periodics [HEAP0]);
1616	downheap (periodics, periodiccnt, 1);	2096	downheap (periodics, periodiccnt, HEAP0);
		2097	}
		2098	else if (w->interval)
		2099	{
		2100	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2101	/* if next trigger time is not sufficiently in the future, put it there */
		2102	/* this might happen because of floating point inexactness */
		2103	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2104	{
		2105	ev_at (w) += w->interval;
		2106
		2107	/* if interval is unreasonably low we might still have a time in the past */
		2108	/* so correct this. this will make the periodic very inexact, but the user */
		2109	/* has effectively asked to get triggered more often than possible */
		2110	if (ev_at (w) < ev_rt_now)
		2111	ev_at (w) = ev_rt_now;
		2112	}
		2113
		2114	ANHE_at_cache (periodics [HEAP0]);
		2115	downheap (periodics, periodiccnt, HEAP0);
		2116	}
		2117	else
		2118	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2119
		2120	EV_FREQUENT_CHECK;
		2121	feed_reverse (EV_A_ (W)w);
1617	}	2122	}
1618	else if (w->interval)	2123	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1619	{
1620	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1621	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1622	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1623	downheap (periodics, periodiccnt, HEAP0);
1624	}
1625	else
1626	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1627		2124
1628	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	2125	feed_reverse_done (EV_A_ EV_PERIODIC);
1629	}	2126	}
1630	}	2127	}
1631		2128
		2129	/* simply recalculate all periodics */
		2130	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1632	static void noinline	2131	static void noinline
1633	periodics_reschedule (EV_P)	2132	periodics_reschedule (EV_P)
1634	{	2133	{
1635	int i;	2134	int i;
1636		2135
1637	/* adjust periodics after time jump */	2136	/* adjust periodics after time jump */
1638	for (i = 1; i <= periodiccnt; ++i)	2137	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1639	{	2138	{
1640	ev_periodic *w = (ev_periodic *)periodics [i];	2139	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1641		2140
1642	if (w->reschedule_cb)	2141	if (w->reschedule_cb)
1643	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2142	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1644	else if (w->interval)	2143	else if (w->interval)
1645	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2144	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2145
		2146	ANHE_at_cache (periodics [i]);
		2147	}
		2148
		2149	reheap (periodics, periodiccnt);
		2150	}
		2151	#endif
		2152
		2153	/* adjust all timers by a given offset */
		2154	static void noinline
		2155	timers_reschedule (EV_P_ ev_tstamp adjust)
		2156	{
		2157	int i;
		2158
		2159	for (i = 0; i < timercnt; ++i)
1646	}	2160	{
1647		2161	ANHE *he = timers + i + HEAP0;
1648	/* now rebuild the heap */	2162	ANHE_w (*he)->at += adjust;
1649	for (i = periodiccnt >> 1; --i; )	2163	ANHE_at_cache (*he);
1650	downheap (periodics, periodiccnt, i + HEAP0);	2164	}
1651	}	2165	}
1652	#endif
1653		2166
1654	void inline_speed	2167	/* fetch new monotonic and realtime times from the kernel */
		2168	/* also detect if there was a timejump, and act accordingly */
		2169	inline_speed void
1655	time_update (EV_P_ ev_tstamp max_block)	2170	time_update (EV_P_ ev_tstamp max_block)
1656	{	2171	{
1657	int i;
1658
1659	#if EV_USE_MONOTONIC	2172	#if EV_USE_MONOTONIC
1660	if (expect_true (have_monotonic))	2173	if (expect_true (have_monotonic))
1661	{	2174	{
		2175	int i;
1662	ev_tstamp odiff = rtmn_diff;	2176	ev_tstamp odiff = rtmn_diff;
1663		2177
1664	mn_now = get_clock ();	2178	mn_now = get_clock ();
1665		2179
1666	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2180	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1692	ev_rt_now = ev_time ();	2206	ev_rt_now = ev_time ();
1693	mn_now = get_clock ();	2207	mn_now = get_clock ();
1694	now_floor = mn_now;	2208	now_floor = mn_now;
1695	}	2209	}
1696		2210
		2211	/* no timer adjustment, as the monotonic clock doesn't jump */
		2212	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1697	# if EV_PERIODIC_ENABLE	2213	# if EV_PERIODIC_ENABLE
1698	periodics_reschedule (EV_A);	2214	periodics_reschedule (EV_A);
1699	# endif	2215	# endif
1700	/* no timer adjustment, as the monotonic clock doesn't jump */
1701	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1702	}	2216	}
1703	else	2217	else
1704	#endif	2218	#endif
1705	{	2219	{
1706	ev_rt_now = ev_time ();	2220	ev_rt_now = ev_time ();
1707		2221
1708	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2222	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1709	{	2223	{
		2224	/* adjust timers. this is easy, as the offset is the same for all of them */
		2225	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1710	#if EV_PERIODIC_ENABLE	2226	#if EV_PERIODIC_ENABLE
1711	periodics_reschedule (EV_A);	2227	periodics_reschedule (EV_A);
1712	#endif	2228	#endif
1713	/* adjust timers. this is easy, as the offset is the same for all of them */
1714	for (i = 1; i <= timercnt; ++i)
1715	ev_at (timers [i]) += ev_rt_now - mn_now;
1716	}	2229	}
1717		2230
1718	mn_now = ev_rt_now;	2231	mn_now = ev_rt_now;
1719	}	2232	}
1720	}	2233	}
1721		2234
1722	void	2235	void
1723	ev_ref (EV_P)
1724	{
1725	++activecnt;
1726	}
1727
1728	void
1729	ev_unref (EV_P)
1730	{
1731	--activecnt;
1732	}
1733
1734	static int loop_done;
1735
1736	void
1737	ev_loop (EV_P_ int flags)	2236	ev_loop (EV_P_ int flags)
1738	{	2237	{
		2238	#if EV_MINIMAL < 2
		2239	++loop_depth;
		2240	#endif
		2241
		2242	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2243
1739	loop_done = EVUNLOOP_CANCEL;	2244	loop_done = EVUNLOOP_CANCEL;
1740		2245
1741	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2246	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1742		2247
1743	do	2248	do
1744	{	2249	{
		2250	#if EV_VERIFY >= 2
		2251	ev_loop_verify (EV_A);
		2252	#endif
		2253
1745	#ifndef _WIN32	2254	#ifndef _WIN32
1746	if (expect_false (curpid)) /* penalise the forking check even more */	2255	if (expect_false (curpid)) /* penalise the forking check even more */
1747	if (expect_false (getpid () != curpid))	2256	if (expect_false (getpid () != curpid))
1748	{	2257	{
1749	curpid = getpid ();	2258	curpid = getpid ();
…		…
1755	/* we might have forked, so queue fork handlers */	2264	/* we might have forked, so queue fork handlers */
1756	if (expect_false (postfork))	2265	if (expect_false (postfork))
1757	if (forkcnt)	2266	if (forkcnt)
1758	{	2267	{
1759	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2268	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1760	call_pending (EV_A);	2269	EV_INVOKE_PENDING;
1761	}	2270	}
1762	#endif	2271	#endif
1763		2272
1764	/* queue prepare watchers (and execute them) */	2273	/* queue prepare watchers (and execute them) */
1765	if (expect_false (preparecnt))	2274	if (expect_false (preparecnt))
1766	{	2275	{
1767	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2276	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1768	call_pending (EV_A);	2277	EV_INVOKE_PENDING;
1769	}	2278	}
1770		2279
1771	if (expect_false (!activecnt))	2280	if (expect_false (loop_done))
1772	break;	2281	break;
1773		2282
1774	/* we might have forked, so reify kernel state if necessary */	2283	/* we might have forked, so reify kernel state if necessary */
1775	if (expect_false (postfork))	2284	if (expect_false (postfork))
1776	loop_fork (EV_A);	2285	loop_fork (EV_A);
…		…
1783	ev_tstamp waittime = 0.;	2292	ev_tstamp waittime = 0.;
1784	ev_tstamp sleeptime = 0.;	2293	ev_tstamp sleeptime = 0.;
1785		2294
1786	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2295	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1787	{	2296	{
		2297	/* remember old timestamp for io_blocktime calculation */
		2298	ev_tstamp prev_mn_now = mn_now;
		2299
1788	/* update time to cancel out callback processing overhead */	2300	/* update time to cancel out callback processing overhead */
1789	time_update (EV_A_ 1e100);	2301	time_update (EV_A_ 1e100);
1790		2302
1791	waittime = MAX_BLOCKTIME;	2303	waittime = MAX_BLOCKTIME;
1792		2304
1793	if (timercnt)	2305	if (timercnt)
1794	{	2306	{
1795	ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge;	2307	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1796	if (waittime > to) waittime = to;	2308	if (waittime > to) waittime = to;
1797	}	2309	}
1798		2310
1799	#if EV_PERIODIC_ENABLE	2311	#if EV_PERIODIC_ENABLE
1800	if (periodiccnt)	2312	if (periodiccnt)
1801	{	2313	{
1802	ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2314	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1803	if (waittime > to) waittime = to;	2315	if (waittime > to) waittime = to;
1804	}	2316	}
1805	#endif	2317	#endif
1806		2318
		2319	/* don't let timeouts decrease the waittime below timeout_blocktime */
1807	if (expect_false (waittime < timeout_blocktime))	2320	if (expect_false (waittime < timeout_blocktime))
1808	waittime = timeout_blocktime;	2321	waittime = timeout_blocktime;
1809		2322
1810	sleeptime = waittime - backend_fudge;	2323	/* extra check because io_blocktime is commonly 0 */
1811
1812	if (expect_true (sleeptime > io_blocktime))	2324	if (expect_false (io_blocktime))
1813	sleeptime = io_blocktime;
1814
1815	if (sleeptime)
1816	{	2325	{
		2326	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2327
		2328	if (sleeptime > waittime - backend_fudge)
		2329	sleeptime = waittime - backend_fudge;
		2330
		2331	if (expect_true (sleeptime > 0.))
		2332	{
1817	ev_sleep (sleeptime);	2333	ev_sleep (sleeptime);
1818	waittime -= sleeptime;	2334	waittime -= sleeptime;
		2335	}
1819	}	2336	}
1820	}	2337	}
1821		2338
		2339	#if EV_MINIMAL < 2
1822	++loop_count;	2340	++loop_count;
		2341	#endif
		2342	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1823	backend_poll (EV_A_ waittime);	2343	backend_poll (EV_A_ waittime);
		2344	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1824		2345
1825	/* update ev_rt_now, do magic */	2346	/* update ev_rt_now, do magic */
1826	time_update (EV_A_ waittime + sleeptime);	2347	time_update (EV_A_ waittime + sleeptime);
1827	}	2348	}
1828		2349
…		…
1839		2360
1840	/* queue check watchers, to be executed first */	2361	/* queue check watchers, to be executed first */
1841	if (expect_false (checkcnt))	2362	if (expect_false (checkcnt))
1842	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2363	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1843		2364
1844	call_pending (EV_A);	2365	EV_INVOKE_PENDING;
1845	}	2366	}
1846	while (expect_true (	2367	while (expect_true (
1847	activecnt	2368	activecnt
1848	&& !loop_done	2369	&& !loop_done
1849	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2370	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1850	));	2371	));
1851		2372
1852	if (loop_done == EVUNLOOP_ONE)	2373	if (loop_done == EVUNLOOP_ONE)
1853	loop_done = EVUNLOOP_CANCEL;	2374	loop_done = EVUNLOOP_CANCEL;
		2375
		2376	#if EV_MINIMAL < 2
		2377	--loop_depth;
		2378	#endif
1854	}	2379	}
1855		2380
1856	void	2381	void
1857	ev_unloop (EV_P_ int how)	2382	ev_unloop (EV_P_ int how)
1858	{	2383	{
1859	loop_done = how;	2384	loop_done = how;
1860	}	2385	}
1861		2386
		2387	void
		2388	ev_ref (EV_P)
		2389	{
		2390	++activecnt;
		2391	}
		2392
		2393	void
		2394	ev_unref (EV_P)
		2395	{
		2396	--activecnt;
		2397	}
		2398
		2399	void
		2400	ev_now_update (EV_P)
		2401	{
		2402	time_update (EV_A_ 1e100);
		2403	}
		2404
		2405	void
		2406	ev_suspend (EV_P)
		2407	{
		2408	ev_now_update (EV_A);
		2409	}
		2410
		2411	void
		2412	ev_resume (EV_P)
		2413	{
		2414	ev_tstamp mn_prev = mn_now;
		2415
		2416	ev_now_update (EV_A);
		2417	timers_reschedule (EV_A_ mn_now - mn_prev);
		2418	#if EV_PERIODIC_ENABLE
		2419	/* TODO: really do this? */
		2420	periodics_reschedule (EV_A);
		2421	#endif
		2422	}
		2423
1862	/*****************************************************************************/	2424	/*****************************************************************************/
		2425	/* singly-linked list management, used when the expected list length is short */
1863		2426
1864	void inline_size	2427	inline_size void
1865	wlist_add (WL *head, WL elem)	2428	wlist_add (WL *head, WL elem)
1866	{	2429	{
1867	elem->next = *head;	2430	elem->next = *head;
1868	*head = elem;	2431	*head = elem;
1869	}	2432	}
1870		2433
1871	void inline_size	2434	inline_size void
1872	wlist_del (WL *head, WL elem)	2435	wlist_del (WL *head, WL elem)
1873	{	2436	{
1874	while (*head)	2437	while (*head)
1875	{	2438	{
1876	if (*head == elem)	2439	if (expect_true (*head == elem))
1877	{	2440	{
1878	*head = elem->next;	2441	*head = elem->next;
1879	return;	2442	break;
1880	}	2443	}
1881		2444
1882	head = &(*head)->next;	2445	head = &(*head)->next;
1883	}	2446	}
1884	}	2447	}
1885		2448
1886	void inline_speed	2449	/* internal, faster, version of ev_clear_pending */
		2450	inline_speed void
1887	clear_pending (EV_P_ W w)	2451	clear_pending (EV_P_ W w)
1888	{	2452	{
1889	if (w->pending)	2453	if (w->pending)
1890	{	2454	{
1891	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2455	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1892	w->pending = 0;	2456	w->pending = 0;
1893	}	2457	}
1894	}	2458	}
1895		2459
1896	int	2460	int
…		…
1900	int pending = w_->pending;	2464	int pending = w_->pending;
1901		2465
1902	if (expect_true (pending))	2466	if (expect_true (pending))
1903	{	2467	{
1904	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2468	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2469	p->w = (W)&pending_w;
1905	w_->pending = 0;	2470	w_->pending = 0;
1906	p->w = 0;
1907	return p->events;	2471	return p->events;
1908	}	2472	}
1909	else	2473	else
1910	return 0;	2474	return 0;
1911	}	2475	}
1912		2476
1913	void inline_size	2477	inline_size void
1914	pri_adjust (EV_P_ W w)	2478	pri_adjust (EV_P_ W w)
1915	{	2479	{
1916	int pri = w->priority;	2480	int pri = ev_priority (w);
1917	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2481	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1918	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2482	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1919	w->priority = pri;	2483	ev_set_priority (w, pri);
1920	}	2484	}
1921		2485
1922	void inline_speed	2486	inline_speed void
1923	ev_start (EV_P_ W w, int active)	2487	ev_start (EV_P_ W w, int active)
1924	{	2488	{
1925	pri_adjust (EV_A_ w);	2489	pri_adjust (EV_A_ w);
1926	w->active = active;	2490	w->active = active;
1927	ev_ref (EV_A);	2491	ev_ref (EV_A);
1928	}	2492	}
1929		2493
1930	void inline_size	2494	inline_size void
1931	ev_stop (EV_P_ W w)	2495	ev_stop (EV_P_ W w)
1932	{	2496	{
1933	ev_unref (EV_A);	2497	ev_unref (EV_A);
1934	w->active = 0;	2498	w->active = 0;
1935	}	2499	}
…		…
1942	int fd = w->fd;	2506	int fd = w->fd;
1943		2507
1944	if (expect_false (ev_is_active (w)))	2508	if (expect_false (ev_is_active (w)))
1945	return;	2509	return;
1946		2510
1947	assert (("ev_io_start called with negative fd", fd >= 0));	2511	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2512	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2513
		2514	EV_FREQUENT_CHECK;
1948		2515
1949	ev_start (EV_A_ (W)w, 1);	2516	ev_start (EV_A_ (W)w, 1);
1950	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2517	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1951	wlist_add (&anfds[fd].head, (WL)w);	2518	wlist_add (&anfds[fd].head, (WL)w);
1952		2519
1953	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2520	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1954	w->events &= ~EV_IOFDSET;	2521	w->events &= ~EV__IOFDSET;
		2522
		2523	EV_FREQUENT_CHECK;
1955	}	2524	}
1956		2525
1957	void noinline	2526	void noinline
1958	ev_io_stop (EV_P_ ev_io *w)	2527	ev_io_stop (EV_P_ ev_io *w)
1959	{	2528	{
1960	clear_pending (EV_A_ (W)w);	2529	clear_pending (EV_A_ (W)w);
1961	if (expect_false (!ev_is_active (w)))	2530	if (expect_false (!ev_is_active (w)))
1962	return;	2531	return;
1963		2532
1964	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2533	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2534
		2535	EV_FREQUENT_CHECK;
1965		2536
1966	wlist_del (&anfds[w->fd].head, (WL)w);	2537	wlist_del (&anfds[w->fd].head, (WL)w);
1967	ev_stop (EV_A_ (W)w);	2538	ev_stop (EV_A_ (W)w);
1968		2539
1969	fd_change (EV_A_ w->fd, 1);	2540	fd_change (EV_A_ w->fd, 1);
		2541
		2542	EV_FREQUENT_CHECK;
1970	}	2543	}
1971		2544
1972	void noinline	2545	void noinline
1973	ev_timer_start (EV_P_ ev_timer *w)	2546	ev_timer_start (EV_P_ ev_timer *w)
1974	{	2547	{
1975	if (expect_false (ev_is_active (w)))	2548	if (expect_false (ev_is_active (w)))
1976	return;	2549	return;
1977		2550
1978	ev_at (w) += mn_now;	2551	ev_at (w) += mn_now;
1979		2552
1980	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2553	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1981		2554
		2555	EV_FREQUENT_CHECK;
		2556
		2557	++timercnt;
1982	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);	2558	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1983	array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2);	2559	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1984	timers [ev_active (w)] = (WT)w;	2560	ANHE_w (timers [ev_active (w)]) = (WT)w;
		2561	ANHE_at_cache (timers [ev_active (w)]);
1985	upheap (timers, ev_active (w));	2562	upheap (timers, ev_active (w));
1986		2563
		2564	EV_FREQUENT_CHECK;
		2565
1987	/*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/	2566	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1988	}	2567	}
1989		2568
1990	void noinline	2569	void noinline
1991	ev_timer_stop (EV_P_ ev_timer *w)	2570	ev_timer_stop (EV_P_ ev_timer *w)
1992	{	2571	{
1993	clear_pending (EV_A_ (W)w);	2572	clear_pending (EV_A_ (W)w);
1994	if (expect_false (!ev_is_active (w)))	2573	if (expect_false (!ev_is_active (w)))
1995	return;	2574	return;
1996		2575
		2576	EV_FREQUENT_CHECK;
		2577
1997	{	2578	{
1998	int active = ev_active (w);	2579	int active = ev_active (w);
1999		2580
2000	assert (("internal timer heap corruption", timers [active] == (WT)w));	2581	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2001		2582
		2583	--timercnt;
		2584
2002	if (expect_true (active < timercnt + HEAP0 - 1))	2585	if (expect_true (active < timercnt + HEAP0))
2003	{	2586	{
2004	timers [active] = timers [timercnt + HEAP0 - 1];	2587	timers [active] = timers [timercnt + HEAP0];
2005	adjustheap (timers, timercnt, active);	2588	adjustheap (timers, timercnt, active);
2006	}	2589	}
2007
2008	--timercnt;
2009	}	2590	}
		2591
		2592	EV_FREQUENT_CHECK;
2010		2593
2011	ev_at (w) -= mn_now;	2594	ev_at (w) -= mn_now;
2012		2595
2013	ev_stop (EV_A_ (W)w);	2596	ev_stop (EV_A_ (W)w);
2014	}	2597	}
2015		2598
2016	void noinline	2599	void noinline
2017	ev_timer_again (EV_P_ ev_timer *w)	2600	ev_timer_again (EV_P_ ev_timer *w)
2018	{	2601	{
		2602	EV_FREQUENT_CHECK;
		2603
2019	if (ev_is_active (w))	2604	if (ev_is_active (w))
2020	{	2605	{
2021	if (w->repeat)	2606	if (w->repeat)
2022	{	2607	{
2023	ev_at (w) = mn_now + w->repeat;	2608	ev_at (w) = mn_now + w->repeat;
		2609	ANHE_at_cache (timers [ev_active (w)]);
2024	adjustheap (timers, timercnt, ev_active (w));	2610	adjustheap (timers, timercnt, ev_active (w));
2025	}	2611	}
2026	else	2612	else
2027	ev_timer_stop (EV_A_ w);	2613	ev_timer_stop (EV_A_ w);
2028	}	2614	}
2029	else if (w->repeat)	2615	else if (w->repeat)
2030	{	2616	{
2031	ev_at (w) = w->repeat;	2617	ev_at (w) = w->repeat;
2032	ev_timer_start (EV_A_ w);	2618	ev_timer_start (EV_A_ w);
2033	}	2619	}
		2620
		2621	EV_FREQUENT_CHECK;
		2622	}
		2623
		2624	ev_tstamp
		2625	ev_timer_remaining (EV_P_ ev_timer *w)
		2626	{
		2627	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2034	}	2628	}
2035		2629
2036	#if EV_PERIODIC_ENABLE	2630	#if EV_PERIODIC_ENABLE
2037	void noinline	2631	void noinline
2038	ev_periodic_start (EV_P_ ev_periodic *w)	2632	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
2042		2636
2043	if (w->reschedule_cb)	2637	if (w->reschedule_cb)
2044	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2638	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2045	else if (w->interval)	2639	else if (w->interval)
2046	{	2640	{
2047	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2641	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2048	/* this formula differs from the one in periodic_reify because we do not always round up */	2642	/* this formula differs from the one in periodic_reify because we do not always round up */
2049	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2643	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2050	}	2644	}
2051	else	2645	else
2052	ev_at (w) = w->offset;	2646	ev_at (w) = w->offset;
2053		2647
		2648	EV_FREQUENT_CHECK;
		2649
		2650	++periodiccnt;
2054	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);	2651	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2055	array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2);	2652	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2056	periodics [ev_active (w)] = (WT)w;	2653	ANHE_w (periodics [ev_active (w)]) = (WT)w;
		2654	ANHE_at_cache (periodics [ev_active (w)]);
2057	upheap (periodics, ev_active (w));	2655	upheap (periodics, ev_active (w));
2058		2656
		2657	EV_FREQUENT_CHECK;
		2658
2059	/*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/	2659	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2060	}	2660	}
2061		2661
2062	void noinline	2662	void noinline
2063	ev_periodic_stop (EV_P_ ev_periodic *w)	2663	ev_periodic_stop (EV_P_ ev_periodic *w)
2064	{	2664	{
2065	clear_pending (EV_A_ (W)w);	2665	clear_pending (EV_A_ (W)w);
2066	if (expect_false (!ev_is_active (w)))	2666	if (expect_false (!ev_is_active (w)))
2067	return;	2667	return;
2068		2668
		2669	EV_FREQUENT_CHECK;
		2670
2069	{	2671	{
2070	int active = ev_active (w);	2672	int active = ev_active (w);
2071		2673
2072	assert (("internal periodic heap corruption", periodics [active] == (WT)w));	2674	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2073		2675
		2676	--periodiccnt;
		2677
2074	if (expect_true (active < periodiccnt + HEAP0 - 1))	2678	if (expect_true (active < periodiccnt + HEAP0))
2075	{	2679	{
2076	periodics [active] = periodics [periodiccnt + HEAP0 - 1];	2680	periodics [active] = periodics [periodiccnt + HEAP0];
2077	adjustheap (periodics, periodiccnt, active);	2681	adjustheap (periodics, periodiccnt, active);
2078	}	2682	}
2079
2080	--periodiccnt;
2081	}	2683	}
		2684
		2685	EV_FREQUENT_CHECK;
2082		2686
2083	ev_stop (EV_A_ (W)w);	2687	ev_stop (EV_A_ (W)w);
2084	}	2688	}
2085		2689
2086	void noinline	2690	void noinline
…		…
2097	#endif	2701	#endif
2098		2702
2099	void noinline	2703	void noinline
2100	ev_signal_start (EV_P_ ev_signal *w)	2704	ev_signal_start (EV_P_ ev_signal *w)
2101	{	2705	{
2102	#if EV_MULTIPLICITY
2103	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2104	#endif
2105	if (expect_false (ev_is_active (w)))	2706	if (expect_false (ev_is_active (w)))
2106	return;	2707	return;
2107		2708
2108	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2709	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2109		2710
2110	evpipe_init (EV_A);	2711	#if EV_MULTIPLICITY
		2712	assert (("libev: a signal must not be attached to two different loops",
		2713	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2111		2714
		2715	signals [w->signum - 1].loop = EV_A;
		2716	#endif
		2717
		2718	EV_FREQUENT_CHECK;
		2719
		2720	#if EV_USE_SIGNALFD
		2721	if (sigfd == -2)
2112	{	2722	{
2113	#ifndef _WIN32	2723	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2114	sigset_t full, prev;	2724	if (sigfd < 0 && errno == EINVAL)
2115	sigfillset (&full);	2725	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2116	sigprocmask (SIG_SETMASK, &full, &prev);
2117	#endif
2118		2726
2119	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2727	if (sigfd >= 0)
		2728	{
		2729	fd_intern (sigfd); /* doing it twice will not hurt */
2120		2730
2121	#ifndef _WIN32	2731	sigemptyset (&sigfd_set);
2122	sigprocmask (SIG_SETMASK, &prev, 0);	2732
2123	#endif	2733	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2734	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2735	ev_io_start (EV_A_ &sigfd_w);
		2736	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2737	}
2124	}	2738	}
		2739
		2740	if (sigfd >= 0)
		2741	{
		2742	/* TODO: check .head */
		2743	sigaddset (&sigfd_set, w->signum);
		2744	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2745
		2746	signalfd (sigfd, &sigfd_set, 0);
		2747	}
		2748	#endif
2125		2749
2126	ev_start (EV_A_ (W)w, 1);	2750	ev_start (EV_A_ (W)w, 1);
2127	wlist_add (&signals [w->signum - 1].head, (WL)w);	2751	wlist_add (&signals [w->signum - 1].head, (WL)w);
2128		2752
2129	if (!((WL)w)->next)	2753	if (!((WL)w)->next)
		2754	# if EV_USE_SIGNALFD
		2755	if (sigfd < 0) /*TODO*/
		2756	# endif
2130	{	2757	{
2131	#if _WIN32	2758	# ifdef _WIN32
		2759	evpipe_init (EV_A);
		2760
2132	signal (w->signum, ev_sighandler);	2761	signal (w->signum, ev_sighandler);
2133	#else	2762	# else
2134	struct sigaction sa;	2763	struct sigaction sa;
		2764
		2765	evpipe_init (EV_A);
		2766
2135	sa.sa_handler = ev_sighandler;	2767	sa.sa_handler = ev_sighandler;
2136	sigfillset (&sa.sa_mask);	2768	sigfillset (&sa.sa_mask);
2137	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2769	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2138	sigaction (w->signum, &sa, 0);	2770	sigaction (w->signum, &sa, 0);
		2771
		2772	sigemptyset (&sa.sa_mask);
		2773	sigaddset (&sa.sa_mask, w->signum);
		2774	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2139	#endif	2775	#endif
2140	}	2776	}
		2777
		2778	EV_FREQUENT_CHECK;
2141	}	2779	}
2142		2780
2143	void noinline	2781	void noinline
2144	ev_signal_stop (EV_P_ ev_signal *w)	2782	ev_signal_stop (EV_P_ ev_signal *w)
2145	{	2783	{
2146	clear_pending (EV_A_ (W)w);	2784	clear_pending (EV_A_ (W)w);
2147	if (expect_false (!ev_is_active (w)))	2785	if (expect_false (!ev_is_active (w)))
2148	return;	2786	return;
2149		2787
		2788	EV_FREQUENT_CHECK;
		2789
2150	wlist_del (&signals [w->signum - 1].head, (WL)w);	2790	wlist_del (&signals [w->signum - 1].head, (WL)w);
2151	ev_stop (EV_A_ (W)w);	2791	ev_stop (EV_A_ (W)w);
2152		2792
2153	if (!signals [w->signum - 1].head)	2793	if (!signals [w->signum - 1].head)
		2794	{
		2795	#if EV_MULTIPLICITY
		2796	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2797	#endif
		2798	#if EV_USE_SIGNALFD
		2799	if (sigfd >= 0)
		2800	{
		2801	sigset_t ss;
		2802
		2803	sigemptyset (&ss);
		2804	sigaddset (&ss, w->signum);
		2805	sigdelset (&sigfd_set, w->signum);
		2806
		2807	signalfd (sigfd, &sigfd_set, 0);
		2808	sigprocmask (SIG_UNBLOCK, &ss, 0);
		2809	}
		2810	else
		2811	#endif
2154	signal (w->signum, SIG_DFL);	2812	signal (w->signum, SIG_DFL);
		2813	}
		2814
		2815	EV_FREQUENT_CHECK;
2155	}	2816	}
2156		2817
2157	void	2818	void
2158	ev_child_start (EV_P_ ev_child *w)	2819	ev_child_start (EV_P_ ev_child *w)
2159	{	2820	{
2160	#if EV_MULTIPLICITY	2821	#if EV_MULTIPLICITY
2161	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2822	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2162	#endif	2823	#endif
2163	if (expect_false (ev_is_active (w)))	2824	if (expect_false (ev_is_active (w)))
2164	return;	2825	return;
2165		2826
		2827	EV_FREQUENT_CHECK;
		2828
2166	ev_start (EV_A_ (W)w, 1);	2829	ev_start (EV_A_ (W)w, 1);
2167	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2830	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2831
		2832	EV_FREQUENT_CHECK;
2168	}	2833	}
2169		2834
2170	void	2835	void
2171	ev_child_stop (EV_P_ ev_child *w)	2836	ev_child_stop (EV_P_ ev_child *w)
2172	{	2837	{
2173	clear_pending (EV_A_ (W)w);	2838	clear_pending (EV_A_ (W)w);
2174	if (expect_false (!ev_is_active (w)))	2839	if (expect_false (!ev_is_active (w)))
2175	return;	2840	return;
2176		2841
		2842	EV_FREQUENT_CHECK;
		2843
2177	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2844	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2178	ev_stop (EV_A_ (W)w);	2845	ev_stop (EV_A_ (W)w);
		2846
		2847	EV_FREQUENT_CHECK;
2179	}	2848	}
2180		2849
2181	#if EV_STAT_ENABLE	2850	#if EV_STAT_ENABLE
2182		2851
2183	# ifdef _WIN32	2852	# ifdef _WIN32
2184	# undef lstat	2853	# undef lstat
2185	# define lstat(a,b) _stati64 (a,b)	2854	# define lstat(a,b) _stati64 (a,b)
2186	# endif	2855	# endif
2187		2856
2188	#define DEF_STAT_INTERVAL 5.0074891	2857	#define DEF_STAT_INTERVAL 5.0074891
		2858	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2189	#define MIN_STAT_INTERVAL 0.1074891	2859	#define MIN_STAT_INTERVAL 0.1074891
2190		2860
2191	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2861	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2192		2862
2193	#if EV_USE_INOTIFY	2863	#if EV_USE_INOTIFY
2194	# define EV_INOTIFY_BUFSIZE 8192	2864	# define EV_INOTIFY_BUFSIZE 8192
…		…
2196	static void noinline	2866	static void noinline
2197	infy_add (EV_P_ ev_stat *w)	2867	infy_add (EV_P_ ev_stat *w)
2198	{	2868	{
2199	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);	2869	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);
2200		2870
2201	if (w->wd < 0)	2871	if (w->wd >= 0)
		2872	{
		2873	struct statfs sfs;
		2874
		2875	/* now local changes will be tracked by inotify, but remote changes won't */
		2876	/* unless the filesystem is known to be local, we therefore still poll */
		2877	/* also do poll on <2.6.25, but with normal frequency */
		2878
		2879	if (!fs_2625)
		2880	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2881	else if (!statfs (w->path, &sfs)
		2882	&& (sfs.f_type == 0x1373 /* devfs */
		2883	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2884	|| sfs.f_type == 0x3153464a /* jfs */
		2885	|| sfs.f_type == 0x52654973 /* reiser3 */
		2886	|| sfs.f_type == 0x01021994 /* tempfs */
		2887	|| sfs.f_type == 0x58465342 /* xfs */))
		2888	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2889	else
		2890	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2202	{	2891	}
2203	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2892	else
		2893	{
		2894	/* can't use inotify, continue to stat */
		2895	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2204		2896
2205	/* monitor some parent directory for speedup hints */	2897	/* if path is not there, monitor some parent directory for speedup hints */
2206	/* note that exceeding the hardcoded limit is not a correctness issue, */	2898	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2207	/* but an efficiency issue only */	2899	/* but an efficiency issue only */
2208	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2900	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2209	{	2901	{
2210	char path [4096];	2902	char path [4096];
2211	strcpy (path, w->path);	2903	strcpy (path, w->path);
…		…
2215	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2907	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2216	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2908	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2217		2909
2218	char *pend = strrchr (path, '/');	2910	char *pend = strrchr (path, '/');
2219		2911
2220	if (!pend)	2912	if (!pend || pend == path)
2221	break; /* whoops, no '/', complain to your admin */	2913	break;
2222		2914
2223	*pend = 0;	2915	*pend = 0;
2224	w->wd = inotify_add_watch (fs_fd, path, mask);	2916	w->wd = inotify_add_watch (fs_fd, path, mask);
2225	}	2917	}
2226	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2918	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2227	}	2919	}
2228	}	2920	}
2229	else
2230	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2231		2921
2232	if (w->wd >= 0)	2922	if (w->wd >= 0)
2233	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2923	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2924
		2925	/* now re-arm timer, if required */
		2926	if (ev_is_active (&w->timer)) ev_ref (EV_A);
		2927	ev_timer_again (EV_A_ &w->timer);
		2928	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2234	}	2929	}
2235		2930
2236	static void noinline	2931	static void noinline
2237	infy_del (EV_P_ ev_stat *w)	2932	infy_del (EV_P_ ev_stat *w)
2238	{	2933	{
…		…
2252		2947
2253	static void noinline	2948	static void noinline
2254	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2949	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2255	{	2950	{
2256	if (slot < 0)	2951	if (slot < 0)
2257	/* overflow, need to check for all hahs slots */	2952	/* overflow, need to check for all hash slots */
2258	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2953	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2259	infy_wd (EV_A_ slot, wd, ev);	2954	infy_wd (EV_A_ slot, wd, ev);
2260	else	2955	else
2261	{	2956	{
2262	WL w_;	2957	WL w_;
…		…
2268		2963
2269	if (w->wd == wd || wd == -1)	2964	if (w->wd == wd || wd == -1)
2270	{	2965	{
2271	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2966	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2272	{	2967	{
		2968	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2273	w->wd = -1;	2969	w->wd = -1;
2274	infy_add (EV_A_ w); /* re-add, no matter what */	2970	infy_add (EV_A_ w); /* re-add, no matter what */
2275	}	2971	}
2276		2972
2277	stat_timer_cb (EV_A_ &w->timer, 0);	2973	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2290		2986
2291	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2987	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2292	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2988	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2293	}	2989	}
2294		2990
2295	void inline_size	2991	inline_size void
		2992	check_2625 (EV_P)
		2993	{
		2994	/* kernels < 2.6.25 are borked
		2995	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2996	*/
		2997	struct utsname buf;
		2998	int major, minor, micro;
		2999
		3000	if (uname (&buf))
		3001	return;
		3002
		3003	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		3004	return;
		3005
		3006	if (major < 2
		3007	|| (major == 2 && minor < 6)
		3008	|| (major == 2 && minor == 6 && micro < 25))
		3009	return;
		3010
		3011	fs_2625 = 1;
		3012	}
		3013
		3014	inline_size int
		3015	infy_newfd (void)
		3016	{
		3017	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3018	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3019	if (fd >= 0)
		3020	return fd;
		3021	#endif
		3022	return inotify_init ();
		3023	}
		3024
		3025	inline_size void
2296	infy_init (EV_P)	3026	infy_init (EV_P)
2297	{	3027	{
2298	if (fs_fd != -2)	3028	if (fs_fd != -2)
2299	return;	3029	return;
2300		3030
		3031	fs_fd = -1;
		3032
		3033	check_2625 (EV_A);
		3034
2301	fs_fd = inotify_init ();	3035	fs_fd = infy_newfd ();
2302		3036
2303	if (fs_fd >= 0)	3037	if (fs_fd >= 0)
2304	{	3038	{
		3039	fd_intern (fs_fd);
2305	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3040	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2306	ev_set_priority (&fs_w, EV_MAXPRI);	3041	ev_set_priority (&fs_w, EV_MAXPRI);
2307	ev_io_start (EV_A_ &fs_w);	3042	ev_io_start (EV_A_ &fs_w);
		3043	ev_unref (EV_A);
2308	}	3044	}
2309	}	3045	}
2310		3046
2311	void inline_size	3047	inline_size void
2312	infy_fork (EV_P)	3048	infy_fork (EV_P)
2313	{	3049	{
2314	int slot;	3050	int slot;
2315		3051
2316	if (fs_fd < 0)	3052	if (fs_fd < 0)
2317	return;	3053	return;
2318		3054
		3055	ev_ref (EV_A);
		3056	ev_io_stop (EV_A_ &fs_w);
2319	close (fs_fd);	3057	close (fs_fd);
2320	fs_fd = inotify_init ();	3058	fs_fd = infy_newfd ();
		3059
		3060	if (fs_fd >= 0)
		3061	{
		3062	fd_intern (fs_fd);
		3063	ev_io_set (&fs_w, fs_fd, EV_READ);
		3064	ev_io_start (EV_A_ &fs_w);
		3065	ev_unref (EV_A);
		3066	}
2321		3067
2322	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3068	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2323	{	3069	{
2324	WL w_ = fs_hash [slot].head;	3070	WL w_ = fs_hash [slot].head;
2325	fs_hash [slot].head = 0;	3071	fs_hash [slot].head = 0;
…		…
2332	w->wd = -1;	3078	w->wd = -1;
2333		3079
2334	if (fs_fd >= 0)	3080	if (fs_fd >= 0)
2335	infy_add (EV_A_ w); /* re-add, no matter what */	3081	infy_add (EV_A_ w); /* re-add, no matter what */
2336	else	3082	else
		3083	{
		3084	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3085	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2337	ev_timer_start (EV_A_ &w->timer);	3086	ev_timer_again (EV_A_ &w->timer);
		3087	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3088	}
2338	}	3089	}
2339
2340	}	3090	}
2341	}	3091	}
2342		3092
		3093	#endif
		3094
		3095	#ifdef _WIN32
		3096	# define EV_LSTAT(p,b) _stati64 (p, b)
		3097	#else
		3098	# define EV_LSTAT(p,b) lstat (p, b)
2343	#endif	3099	#endif
2344		3100
2345	void	3101	void
2346	ev_stat_stat (EV_P_ ev_stat *w)	3102	ev_stat_stat (EV_P_ ev_stat *w)
2347	{	3103	{
…		…
2354	static void noinline	3110	static void noinline
2355	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3111	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2356	{	3112	{
2357	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	3113	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2358		3114
2359	/* we copy this here each the time so that */	3115	ev_statdata prev = w->attr;
2360	/* prev has the old value when the callback gets invoked */
2361	w->prev = w->attr;
2362	ev_stat_stat (EV_A_ w);	3116	ev_stat_stat (EV_A_ w);
2363		3117
2364	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3118	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2365	if (	3119	if (
2366	w->prev.st_dev != w->attr.st_dev	3120	prev.st_dev != w->attr.st_dev
2367	|| w->prev.st_ino != w->attr.st_ino	3121	|| prev.st_ino != w->attr.st_ino
2368	|| w->prev.st_mode != w->attr.st_mode	3122	|| prev.st_mode != w->attr.st_mode
2369	|| w->prev.st_nlink != w->attr.st_nlink	3123	|| prev.st_nlink != w->attr.st_nlink
2370	|| w->prev.st_uid != w->attr.st_uid	3124	|| prev.st_uid != w->attr.st_uid
2371	|| w->prev.st_gid != w->attr.st_gid	3125	|| prev.st_gid != w->attr.st_gid
2372	|| w->prev.st_rdev != w->attr.st_rdev	3126	|| prev.st_rdev != w->attr.st_rdev
2373	|| w->prev.st_size != w->attr.st_size	3127	|| prev.st_size != w->attr.st_size
2374	|| w->prev.st_atime != w->attr.st_atime	3128	|| prev.st_atime != w->attr.st_atime
2375	|| w->prev.st_mtime != w->attr.st_mtime	3129	|| prev.st_mtime != w->attr.st_mtime
2376	|| w->prev.st_ctime != w->attr.st_ctime	3130	|| prev.st_ctime != w->attr.st_ctime
2377	) {	3131	) {
		3132	/* we only update w->prev on actual differences */
		3133	/* in case we test more often than invoke the callback, */
		3134	/* to ensure that prev is always different to attr */
		3135	w->prev = prev;
		3136
2378	#if EV_USE_INOTIFY	3137	#if EV_USE_INOTIFY
		3138	if (fs_fd >= 0)
		3139	{
2379	infy_del (EV_A_ w);	3140	infy_del (EV_A_ w);
2380	infy_add (EV_A_ w);	3141	infy_add (EV_A_ w);
2381	ev_stat_stat (EV_A_ w); /* avoid race... */	3142	ev_stat_stat (EV_A_ w); /* avoid race... */
		3143	}
2382	#endif	3144	#endif
2383		3145
2384	ev_feed_event (EV_A_ w, EV_STAT);	3146	ev_feed_event (EV_A_ w, EV_STAT);
2385	}	3147	}
2386	}	3148	}
…		…
2389	ev_stat_start (EV_P_ ev_stat *w)	3151	ev_stat_start (EV_P_ ev_stat *w)
2390	{	3152	{
2391	if (expect_false (ev_is_active (w)))	3153	if (expect_false (ev_is_active (w)))
2392	return;	3154	return;
2393		3155
2394	/* since we use memcmp, we need to clear any padding data etc. */
2395	memset (&w->prev, 0, sizeof (ev_statdata));
2396	memset (&w->attr, 0, sizeof (ev_statdata));
2397
2398	ev_stat_stat (EV_A_ w);	3156	ev_stat_stat (EV_A_ w);
2399		3157
		3158	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2400	if (w->interval < MIN_STAT_INTERVAL)	3159	w->interval = MIN_STAT_INTERVAL;
2401	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2402		3160
2403	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3161	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2404	ev_set_priority (&w->timer, ev_priority (w));	3162	ev_set_priority (&w->timer, ev_priority (w));
2405		3163
2406	#if EV_USE_INOTIFY	3164	#if EV_USE_INOTIFY
2407	infy_init (EV_A);	3165	infy_init (EV_A);
2408		3166
2409	if (fs_fd >= 0)	3167	if (fs_fd >= 0)
2410	infy_add (EV_A_ w);	3168	infy_add (EV_A_ w);
2411	else	3169	else
2412	#endif	3170	#endif
		3171	{
2413	ev_timer_start (EV_A_ &w->timer);	3172	ev_timer_again (EV_A_ &w->timer);
		3173	ev_unref (EV_A);
		3174	}
2414		3175
2415	ev_start (EV_A_ (W)w, 1);	3176	ev_start (EV_A_ (W)w, 1);
		3177
		3178	EV_FREQUENT_CHECK;
2416	}	3179	}
2417		3180
2418	void	3181	void
2419	ev_stat_stop (EV_P_ ev_stat *w)	3182	ev_stat_stop (EV_P_ ev_stat *w)
2420	{	3183	{
2421	clear_pending (EV_A_ (W)w);	3184	clear_pending (EV_A_ (W)w);
2422	if (expect_false (!ev_is_active (w)))	3185	if (expect_false (!ev_is_active (w)))
2423	return;	3186	return;
2424		3187
		3188	EV_FREQUENT_CHECK;
		3189
2425	#if EV_USE_INOTIFY	3190	#if EV_USE_INOTIFY
2426	infy_del (EV_A_ w);	3191	infy_del (EV_A_ w);
2427	#endif	3192	#endif
		3193
		3194	if (ev_is_active (&w->timer))
		3195	{
		3196	ev_ref (EV_A);
2428	ev_timer_stop (EV_A_ &w->timer);	3197	ev_timer_stop (EV_A_ &w->timer);
		3198	}
2429		3199
2430	ev_stop (EV_A_ (W)w);	3200	ev_stop (EV_A_ (W)w);
		3201
		3202	EV_FREQUENT_CHECK;
2431	}	3203	}
2432	#endif	3204	#endif
2433		3205
2434	#if EV_IDLE_ENABLE	3206	#if EV_IDLE_ENABLE
2435	void	3207	void
…		…
2437	{	3209	{
2438	if (expect_false (ev_is_active (w)))	3210	if (expect_false (ev_is_active (w)))
2439	return;	3211	return;
2440		3212
2441	pri_adjust (EV_A_ (W)w);	3213	pri_adjust (EV_A_ (W)w);
		3214
		3215	EV_FREQUENT_CHECK;
2442		3216
2443	{	3217	{
2444	int active = ++idlecnt [ABSPRI (w)];	3218	int active = ++idlecnt [ABSPRI (w)];
2445		3219
2446	++idleall;	3220	++idleall;
2447	ev_start (EV_A_ (W)w, active);	3221	ev_start (EV_A_ (W)w, active);
2448		3222
2449	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	3223	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2450	idles [ABSPRI (w)][active - 1] = w;	3224	idles [ABSPRI (w)][active - 1] = w;
2451	}	3225	}
		3226
		3227	EV_FREQUENT_CHECK;
2452	}	3228	}
2453		3229
2454	void	3230	void
2455	ev_idle_stop (EV_P_ ev_idle *w)	3231	ev_idle_stop (EV_P_ ev_idle *w)
2456	{	3232	{
2457	clear_pending (EV_A_ (W)w);	3233	clear_pending (EV_A_ (W)w);
2458	if (expect_false (!ev_is_active (w)))	3234	if (expect_false (!ev_is_active (w)))
2459	return;	3235	return;
2460		3236
		3237	EV_FREQUENT_CHECK;
		3238
2461	{	3239	{
2462	int active = ev_active (w);	3240	int active = ev_active (w);
2463		3241
2464	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3242	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2465	ev_active (idles [ABSPRI (w)][active - 1]) = active;	3243	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2466		3244
2467	ev_stop (EV_A_ (W)w);	3245	ev_stop (EV_A_ (W)w);
2468	--idleall;	3246	--idleall;
2469	}	3247	}
		3248
		3249	EV_FREQUENT_CHECK;
2470	}	3250	}
2471	#endif	3251	#endif
2472		3252
2473	void	3253	void
2474	ev_prepare_start (EV_P_ ev_prepare *w)	3254	ev_prepare_start (EV_P_ ev_prepare *w)
2475	{	3255	{
2476	if (expect_false (ev_is_active (w)))	3256	if (expect_false (ev_is_active (w)))
2477	return;	3257	return;
		3258
		3259	EV_FREQUENT_CHECK;
2478		3260
2479	ev_start (EV_A_ (W)w, ++preparecnt);	3261	ev_start (EV_A_ (W)w, ++preparecnt);
2480	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3262	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2481	prepares [preparecnt - 1] = w;	3263	prepares [preparecnt - 1] = w;
		3264
		3265	EV_FREQUENT_CHECK;
2482	}	3266	}
2483		3267
2484	void	3268	void
2485	ev_prepare_stop (EV_P_ ev_prepare *w)	3269	ev_prepare_stop (EV_P_ ev_prepare *w)
2486	{	3270	{
2487	clear_pending (EV_A_ (W)w);	3271	clear_pending (EV_A_ (W)w);
2488	if (expect_false (!ev_is_active (w)))	3272	if (expect_false (!ev_is_active (w)))
2489	return;	3273	return;
2490		3274
		3275	EV_FREQUENT_CHECK;
		3276
2491	{	3277	{
2492	int active = ev_active (w);	3278	int active = ev_active (w);
2493		3279
2494	prepares [active - 1] = prepares [--preparecnt];	3280	prepares [active - 1] = prepares [--preparecnt];
2495	ev_active (prepares [active - 1]) = active;	3281	ev_active (prepares [active - 1]) = active;
2496	}	3282	}
2497		3283
2498	ev_stop (EV_A_ (W)w);	3284	ev_stop (EV_A_ (W)w);
		3285
		3286	EV_FREQUENT_CHECK;
2499	}	3287	}
2500		3288
2501	void	3289	void
2502	ev_check_start (EV_P_ ev_check *w)	3290	ev_check_start (EV_P_ ev_check *w)
2503	{	3291	{
2504	if (expect_false (ev_is_active (w)))	3292	if (expect_false (ev_is_active (w)))
2505	return;	3293	return;
		3294
		3295	EV_FREQUENT_CHECK;
2506		3296
2507	ev_start (EV_A_ (W)w, ++checkcnt);	3297	ev_start (EV_A_ (W)w, ++checkcnt);
2508	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3298	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2509	checks [checkcnt - 1] = w;	3299	checks [checkcnt - 1] = w;
		3300
		3301	EV_FREQUENT_CHECK;
2510	}	3302	}
2511		3303
2512	void	3304	void
2513	ev_check_stop (EV_P_ ev_check *w)	3305	ev_check_stop (EV_P_ ev_check *w)
2514	{	3306	{
2515	clear_pending (EV_A_ (W)w);	3307	clear_pending (EV_A_ (W)w);
2516	if (expect_false (!ev_is_active (w)))	3308	if (expect_false (!ev_is_active (w)))
2517	return;	3309	return;
2518		3310
		3311	EV_FREQUENT_CHECK;
		3312
2519	{	3313	{
2520	int active = ev_active (w);	3314	int active = ev_active (w);
2521		3315
2522	checks [active - 1] = checks [--checkcnt];	3316	checks [active - 1] = checks [--checkcnt];
2523	ev_active (checks [active - 1]) = active;	3317	ev_active (checks [active - 1]) = active;
2524	}	3318	}
2525		3319
2526	ev_stop (EV_A_ (W)w);	3320	ev_stop (EV_A_ (W)w);
		3321
		3322	EV_FREQUENT_CHECK;
2527	}	3323	}
2528		3324
2529	#if EV_EMBED_ENABLE	3325	#if EV_EMBED_ENABLE
2530	void noinline	3326	void noinline
2531	ev_embed_sweep (EV_P_ ev_embed *w)	3327	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2548	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3344	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2549	{	3345	{
2550	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3346	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2551		3347
2552	{	3348	{
2553	struct ev_loop *loop = w->other;	3349	EV_P = w->other;
2554		3350
2555	while (fdchangecnt)	3351	while (fdchangecnt)
2556	{	3352	{
2557	fd_reify (EV_A);	3353	fd_reify (EV_A);
2558	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3354	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2559	}	3355	}
2560	}	3356	}
2561	}	3357	}
2562		3358
		3359	static void
		3360	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3361	{
		3362	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3363
		3364	ev_embed_stop (EV_A_ w);
		3365
		3366	{
		3367	EV_P = w->other;
		3368
		3369	ev_loop_fork (EV_A);
		3370	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3371	}
		3372
		3373	ev_embed_start (EV_A_ w);
		3374	}
		3375
2563	#if 0	3376	#if 0
2564	static void	3377	static void
2565	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3378	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2566	{	3379	{
2567	ev_idle_stop (EV_A_ idle);	3380	ev_idle_stop (EV_A_ idle);
…		…
2573	{	3386	{
2574	if (expect_false (ev_is_active (w)))	3387	if (expect_false (ev_is_active (w)))
2575	return;	3388	return;
2576		3389
2577	{	3390	{
2578	struct ev_loop *loop = w->other;	3391	EV_P = w->other;
2579	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3392	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2580	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3393	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2581	}	3394	}
		3395
		3396	EV_FREQUENT_CHECK;
2582		3397
2583	ev_set_priority (&w->io, ev_priority (w));	3398	ev_set_priority (&w->io, ev_priority (w));
2584	ev_io_start (EV_A_ &w->io);	3399	ev_io_start (EV_A_ &w->io);
2585		3400
2586	ev_prepare_init (&w->prepare, embed_prepare_cb);	3401	ev_prepare_init (&w->prepare, embed_prepare_cb);
2587	ev_set_priority (&w->prepare, EV_MINPRI);	3402	ev_set_priority (&w->prepare, EV_MINPRI);
2588	ev_prepare_start (EV_A_ &w->prepare);	3403	ev_prepare_start (EV_A_ &w->prepare);
2589		3404
		3405	ev_fork_init (&w->fork, embed_fork_cb);
		3406	ev_fork_start (EV_A_ &w->fork);
		3407
2590	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3408	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2591		3409
2592	ev_start (EV_A_ (W)w, 1);	3410	ev_start (EV_A_ (W)w, 1);
		3411
		3412	EV_FREQUENT_CHECK;
2593	}	3413	}
2594		3414
2595	void	3415	void
2596	ev_embed_stop (EV_P_ ev_embed *w)	3416	ev_embed_stop (EV_P_ ev_embed *w)
2597	{	3417	{
2598	clear_pending (EV_A_ (W)w);	3418	clear_pending (EV_A_ (W)w);
2599	if (expect_false (!ev_is_active (w)))	3419	if (expect_false (!ev_is_active (w)))
2600	return;	3420	return;
2601		3421
		3422	EV_FREQUENT_CHECK;
		3423
2602	ev_io_stop (EV_A_ &w->io);	3424	ev_io_stop (EV_A_ &w->io);
2603	ev_prepare_stop (EV_A_ &w->prepare);	3425	ev_prepare_stop (EV_A_ &w->prepare);
		3426	ev_fork_stop (EV_A_ &w->fork);
2604		3427
2605	ev_stop (EV_A_ (W)w);	3428	EV_FREQUENT_CHECK;
2606	}	3429	}
2607	#endif	3430	#endif
2608		3431
2609	#if EV_FORK_ENABLE	3432	#if EV_FORK_ENABLE
2610	void	3433	void
2611	ev_fork_start (EV_P_ ev_fork *w)	3434	ev_fork_start (EV_P_ ev_fork *w)
2612	{	3435	{
2613	if (expect_false (ev_is_active (w)))	3436	if (expect_false (ev_is_active (w)))
2614	return;	3437	return;
		3438
		3439	EV_FREQUENT_CHECK;
2615		3440
2616	ev_start (EV_A_ (W)w, ++forkcnt);	3441	ev_start (EV_A_ (W)w, ++forkcnt);
2617	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3442	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2618	forks [forkcnt - 1] = w;	3443	forks [forkcnt - 1] = w;
		3444
		3445	EV_FREQUENT_CHECK;
2619	}	3446	}
2620		3447
2621	void	3448	void
2622	ev_fork_stop (EV_P_ ev_fork *w)	3449	ev_fork_stop (EV_P_ ev_fork *w)
2623	{	3450	{
2624	clear_pending (EV_A_ (W)w);	3451	clear_pending (EV_A_ (W)w);
2625	if (expect_false (!ev_is_active (w)))	3452	if (expect_false (!ev_is_active (w)))
2626	return;	3453	return;
2627		3454
		3455	EV_FREQUENT_CHECK;
		3456
2628	{	3457	{
2629	int active = ev_active (w);	3458	int active = ev_active (w);
2630		3459
2631	forks [active - 1] = forks [--forkcnt];	3460	forks [active - 1] = forks [--forkcnt];
2632	ev_active (forks [active - 1]) = active;	3461	ev_active (forks [active - 1]) = active;
2633	}	3462	}
2634		3463
2635	ev_stop (EV_A_ (W)w);	3464	ev_stop (EV_A_ (W)w);
		3465
		3466	EV_FREQUENT_CHECK;
2636	}	3467	}
2637	#endif	3468	#endif
2638		3469
2639	#if EV_ASYNC_ENABLE	3470	#if EV_ASYNC_ENABLE
2640	void	3471	void
…		…
2642	{	3473	{
2643	if (expect_false (ev_is_active (w)))	3474	if (expect_false (ev_is_active (w)))
2644	return;	3475	return;
2645		3476
2646	evpipe_init (EV_A);	3477	evpipe_init (EV_A);
		3478
		3479	EV_FREQUENT_CHECK;
2647		3480
2648	ev_start (EV_A_ (W)w, ++asynccnt);	3481	ev_start (EV_A_ (W)w, ++asynccnt);
2649	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3482	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2650	asyncs [asynccnt - 1] = w;	3483	asyncs [asynccnt - 1] = w;
		3484
		3485	EV_FREQUENT_CHECK;
2651	}	3486	}
2652		3487
2653	void	3488	void
2654	ev_async_stop (EV_P_ ev_async *w)	3489	ev_async_stop (EV_P_ ev_async *w)
2655	{	3490	{
2656	clear_pending (EV_A_ (W)w);	3491	clear_pending (EV_A_ (W)w);
2657	if (expect_false (!ev_is_active (w)))	3492	if (expect_false (!ev_is_active (w)))
2658	return;	3493	return;
2659		3494
		3495	EV_FREQUENT_CHECK;
		3496
2660	{	3497	{
2661	int active = ev_active (w);	3498	int active = ev_active (w);
2662		3499
2663	asyncs [active - 1] = asyncs [--asynccnt];	3500	asyncs [active - 1] = asyncs [--asynccnt];
2664	ev_active (asyncs [active - 1]) = active;	3501	ev_active (asyncs [active - 1]) = active;
2665	}	3502	}
2666		3503
2667	ev_stop (EV_A_ (W)w);	3504	ev_stop (EV_A_ (W)w);
		3505
		3506	EV_FREQUENT_CHECK;
2668	}	3507	}
2669		3508
2670	void	3509	void
2671	ev_async_send (EV_P_ ev_async *w)	3510	ev_async_send (EV_P_ ev_async *w)
2672	{	3511	{
2673	w->sent = 1;	3512	w->sent = 1;
2674	evpipe_write (EV_A_ &gotasync);	3513	evpipe_write (EV_A_ &async_pending);
2675	}	3514	}
2676	#endif	3515	#endif
2677		3516
2678	/*****************************************************************************/	3517	/*****************************************************************************/
2679		3518
…		…
2689	once_cb (EV_P_ struct ev_once *once, int revents)	3528	once_cb (EV_P_ struct ev_once *once, int revents)
2690	{	3529	{
2691	void (*cb)(int revents, void *arg) = once->cb;	3530	void (*cb)(int revents, void *arg) = once->cb;
2692	void *arg = once->arg;	3531	void *arg = once->arg;
2693		3532
2694	ev_io_stop (EV_A_ &once->io);	3533	ev_io_stop (EV_A_ &once->io);
2695	ev_timer_stop (EV_A_ &once->to);	3534	ev_timer_stop (EV_A_ &once->to);
2696	ev_free (once);	3535	ev_free (once);
2697		3536
2698	cb (revents, arg);	3537	cb (revents, arg);
2699	}	3538	}
2700		3539
2701	static void	3540	static void
2702	once_cb_io (EV_P_ ev_io *w, int revents)	3541	once_cb_io (EV_P_ ev_io *w, int revents)
2703	{	3542	{
2704	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3543	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3544
		3545	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2705	}	3546	}
2706		3547
2707	static void	3548	static void
2708	once_cb_to (EV_P_ ev_timer *w, int revents)	3549	once_cb_to (EV_P_ ev_timer *w, int revents)
2709	{	3550	{
2710	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3551	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3552
		3553	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2711	}	3554	}
2712		3555
2713	void	3556	void
2714	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3557	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2715	{	3558	{
…		…
2737	ev_timer_set (&once->to, timeout, 0.);	3580	ev_timer_set (&once->to, timeout, 0.);
2738	ev_timer_start (EV_A_ &once->to);	3581	ev_timer_start (EV_A_ &once->to);
2739	}	3582	}
2740	}	3583	}
2741		3584
		3585	/*****************************************************************************/
		3586
		3587	#if EV_WALK_ENABLE
		3588	void
		3589	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3590	{
		3591	int i, j;
		3592	ev_watcher_list *wl, *wn;
		3593
		3594	if (types & (EV_IO | EV_EMBED))
		3595	for (i = 0; i < anfdmax; ++i)
		3596	for (wl = anfds [i].head; wl; )
		3597	{
		3598	wn = wl->next;
		3599
		3600	#if EV_EMBED_ENABLE
		3601	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3602	{
		3603	if (types & EV_EMBED)
		3604	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3605	}
		3606	else
		3607	#endif
		3608	#if EV_USE_INOTIFY
		3609	if (ev_cb ((ev_io *)wl) == infy_cb)
		3610	;
		3611	else
		3612	#endif
		3613	if ((ev_io *)wl != &pipe_w)
		3614	if (types & EV_IO)
		3615	cb (EV_A_ EV_IO, wl);
		3616
		3617	wl = wn;
		3618	}
		3619
		3620	if (types & (EV_TIMER | EV_STAT))
		3621	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3622	#if EV_STAT_ENABLE
		3623	/*TODO: timer is not always active*/
		3624	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3625	{
		3626	if (types & EV_STAT)
		3627	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3628	}
		3629	else
		3630	#endif
		3631	if (types & EV_TIMER)
		3632	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3633
		3634	#if EV_PERIODIC_ENABLE
		3635	if (types & EV_PERIODIC)
		3636	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3637	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3638	#endif
		3639
		3640	#if EV_IDLE_ENABLE
		3641	if (types & EV_IDLE)
		3642	for (j = NUMPRI; i--; )
		3643	for (i = idlecnt [j]; i--; )
		3644	cb (EV_A_ EV_IDLE, idles [j][i]);
		3645	#endif
		3646
		3647	#if EV_FORK_ENABLE
		3648	if (types & EV_FORK)
		3649	for (i = forkcnt; i--; )
		3650	if (ev_cb (forks [i]) != embed_fork_cb)
		3651	cb (EV_A_ EV_FORK, forks [i]);
		3652	#endif
		3653
		3654	#if EV_ASYNC_ENABLE
		3655	if (types & EV_ASYNC)
		3656	for (i = asynccnt; i--; )
		3657	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3658	#endif
		3659
		3660	if (types & EV_PREPARE)
		3661	for (i = preparecnt; i--; )
		3662	#if EV_EMBED_ENABLE
		3663	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3664	#endif
		3665	cb (EV_A_ EV_PREPARE, prepares [i]);
		3666
		3667	if (types & EV_CHECK)
		3668	for (i = checkcnt; i--; )
		3669	cb (EV_A_ EV_CHECK, checks [i]);
		3670
		3671	if (types & EV_SIGNAL)
		3672	for (i = 0; i < EV_NSIG - 1; ++i)
		3673	for (wl = signals [i].head; wl; )
		3674	{
		3675	wn = wl->next;
		3676	cb (EV_A_ EV_SIGNAL, wl);
		3677	wl = wn;
		3678	}
		3679
		3680	if (types & EV_CHILD)
		3681	for (i = EV_PID_HASHSIZE; i--; )
		3682	for (wl = childs [i]; wl; )
		3683	{
		3684	wn = wl->next;
		3685	cb (EV_A_ EV_CHILD, wl);
		3686	wl = wn;
		3687	}
		3688	/* EV_STAT 0x00001000 /* stat data changed */
		3689	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3690	}
		3691	#endif
		3692
2742	#if EV_MULTIPLICITY	3693	#if EV_MULTIPLICITY
2743	#include "ev_wrap.h"	3694	#include "ev_wrap.h"
2744	#endif	3695	#endif
2745		3696
2746	#ifdef __cplusplus	3697	#ifdef __cplusplus

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