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Comparing libev/ev.c (file contents):
Revision 1.260 by root, Mon Sep 8 17:24:39 2008 UTC vs.
Revision 1.328 by root, Sun Feb 14 19:23:19 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) 2007,2008,2009,2010 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
…		…
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
141	#include <assert.h>	164	#include <assert.h>
142	#include <errno.h>	165	#include <errno.h>
143	#include <sys/types.h>	166	#include <sys/types.h>
144	#include <time.h>	167	#include <time.h>
		168	#include <limits.h>
145		169
146	#include <signal.h>	170	#include <signal.h>
147		171
148	#ifdef EV_H	172	#ifdef EV_H
149	# include EV_H	173	# include EV_H
…		…
164	# endif	188	# endif
165	#endif	189	#endif
166		190
167	/* this block tries to deduce configuration from header-defined symbols and defaults */	191	/* this block tries to deduce configuration from header-defined symbols and defaults */
168		192
		193	/* try to deduce the maximum number of signals on this platform */
		194	#if defined (EV_NSIG)
		195	/* use what's provided */
		196	#elif defined (NSIG)
		197	# define EV_NSIG (NSIG)
		198	#elif defined(_NSIG)
		199	# define EV_NSIG (_NSIG)
		200	#elif defined (SIGMAX)
		201	# define EV_NSIG (SIGMAX+1)
		202	#elif defined (SIG_MAX)
		203	# define EV_NSIG (SIG_MAX+1)
		204	#elif defined (_SIG_MAX)
		205	# define EV_NSIG (_SIG_MAX+1)
		206	#elif defined (MAXSIG)
		207	# define EV_NSIG (MAXSIG+1)
		208	#elif defined (MAX_SIG)
		209	# define EV_NSIG (MAX_SIG+1)
		210	#elif defined (SIGARRAYSIZE)
		211	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		212	#elif defined (_sys_nsig)
		213	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		214	#else
		215	# error "unable to find value for NSIG, please report"
		216	/* to make it compile regardless, just remove the above line */
		217	# define EV_NSIG 65
		218	#endif
		219
		220	#ifndef EV_USE_CLOCK_SYSCALL
		221	# if __linux && __GLIBC__ >= 2
		222	# define EV_USE_CLOCK_SYSCALL 1
		223	# else
		224	# define EV_USE_CLOCK_SYSCALL 0
		225	# endif
		226	#endif
		227
169	#ifndef EV_USE_MONOTONIC	228	#ifndef EV_USE_MONOTONIC
170	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0	229	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171	# define EV_USE_MONOTONIC 1	230	# define EV_USE_MONOTONIC 1
172	# else	231	# else
173	# define EV_USE_MONOTONIC 0	232	# define EV_USE_MONOTONIC 0
174	# endif	233	# endif
175	#endif	234	#endif
176		235
177	#ifndef EV_USE_REALTIME	236	#ifndef EV_USE_REALTIME
178	# define EV_USE_REALTIME 0	237	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179	#endif	238	#endif
180		239
181	#ifndef EV_USE_NANOSLEEP	240	#ifndef EV_USE_NANOSLEEP
182	# if _POSIX_C_SOURCE >= 199309L	241	# if _POSIX_C_SOURCE >= 199309L
183	# define EV_USE_NANOSLEEP 1	242	# define EV_USE_NANOSLEEP 1
…		…
244	# else	303	# else
245	# define EV_USE_EVENTFD 0	304	# define EV_USE_EVENTFD 0
246	# endif	305	# endif
247	#endif	306	#endif
248		307
		308	#ifndef EV_USE_SIGNALFD
		309	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		310	# define EV_USE_SIGNALFD 1
		311	# else
		312	# define EV_USE_SIGNALFD 0
		313	# endif
		314	#endif
		315
249	#if 0 /* debugging */	316	#if 0 /* debugging */
250	# define EV_VERIFY 3	317	# define EV_VERIFY 3
251	# define EV_USE_4HEAP 1	318	# define EV_USE_4HEAP 1
252	# define EV_HEAP_CACHE_AT 1	319	# define EV_HEAP_CACHE_AT 1
253	#endif	320	#endif
…		…
262		329
263	#ifndef EV_HEAP_CACHE_AT	330	#ifndef EV_HEAP_CACHE_AT
264	# define EV_HEAP_CACHE_AT !EV_MINIMAL	331	# define EV_HEAP_CACHE_AT !EV_MINIMAL
265	#endif	332	#endif
266		333
		334	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		335	/* which makes programs even slower. might work on other unices, too. */
		336	#if EV_USE_CLOCK_SYSCALL
		337	# include <syscall.h>
		338	# ifdef SYS_clock_gettime
		339	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		340	# undef EV_USE_MONOTONIC
		341	# define EV_USE_MONOTONIC 1
		342	# else
		343	# undef EV_USE_CLOCK_SYSCALL
		344	# define EV_USE_CLOCK_SYSCALL 0
		345	# endif
		346	#endif
		347
267	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	348	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
		349
		350	#ifdef _AIX
		351	/* AIX has a completely broken poll.h header */
		352	# undef EV_USE_POLL
		353	# define EV_USE_POLL 0
		354	#endif
268		355
269	#ifndef CLOCK_MONOTONIC	356	#ifndef CLOCK_MONOTONIC
270	# undef EV_USE_MONOTONIC	357	# undef EV_USE_MONOTONIC
271	# define EV_USE_MONOTONIC 0	358	# define EV_USE_MONOTONIC 0
272	#endif	359	#endif
…		…
286	# include <sys/select.h>	373	# include <sys/select.h>
287	# endif	374	# endif
288	#endif	375	#endif
289		376
290	#if EV_USE_INOTIFY	377	#if EV_USE_INOTIFY
		378	# include <sys/utsname.h>
		379	# include <sys/statfs.h>
291	# include <sys/inotify.h>	380	# include <sys/inotify.h>
		381	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		382	# ifndef IN_DONT_FOLLOW
		383	# undef EV_USE_INOTIFY
		384	# define EV_USE_INOTIFY 0
		385	# endif
292	#endif	386	#endif
293		387
294	#if EV_SELECT_IS_WINSOCKET	388	#if EV_SELECT_IS_WINSOCKET
295	# include <winsock.h>	389	# include <winsock.h>
296	#endif	390	#endif
297		391
298	#if EV_USE_EVENTFD	392	#if EV_USE_EVENTFD
299	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	393	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
300	# include <stdint.h>	394	# include <stdint.h>
		395	# ifndef EFD_NONBLOCK
		396	# define EFD_NONBLOCK O_NONBLOCK
		397	# endif
		398	# ifndef EFD_CLOEXEC
		399	# ifdef O_CLOEXEC
		400	# define EFD_CLOEXEC O_CLOEXEC
		401	# else
		402	# define EFD_CLOEXEC 02000000
		403	# endif
		404	# endif
301	# ifdef __cplusplus	405	# ifdef __cplusplus
302	extern "C" {	406	extern "C" {
303	# endif	407	# endif
304	int eventfd (unsigned int initval, int flags);	408	int eventfd (unsigned int initval, int flags);
305	# ifdef __cplusplus	409	# ifdef __cplusplus
306	}	410	}
307	# endif	411	# endif
308	#endif	412	#endif
		413
		414	#if EV_USE_SIGNALFD
		415	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		416	# include <stdint.h>
		417	# ifndef SFD_NONBLOCK
		418	# define SFD_NONBLOCK O_NONBLOCK
		419	# endif
		420	# ifndef SFD_CLOEXEC
		421	# ifdef O_CLOEXEC
		422	# define SFD_CLOEXEC O_CLOEXEC
		423	# else
		424	# define SFD_CLOEXEC 02000000
		425	# endif
		426	# endif
		427	# ifdef __cplusplus
		428	extern "C" {
		429	# endif
		430	int signalfd (int fd, const sigset_t *mask, int flags);
		431
		432	struct signalfd_siginfo
		433	{
		434	uint32_t ssi_signo;
		435	char pad[128 - sizeof (uint32_t)];
		436	};
		437	# ifdef __cplusplus
		438	}
		439	# endif
		440	#endif
		441
309		442
310	/**/	443	/**/
311		444
312	#if EV_VERIFY >= 3	445	#if EV_VERIFY >= 3
313	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	446	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
…		…
325	*/	458	*/
326	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	459	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
327		460
328	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	461	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
329	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	462	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
330	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
331		463
332	#if __GNUC__ >= 4	464	#if __GNUC__ >= 4
333	# define expect(expr,value) __builtin_expect ((expr),(value))	465	# define expect(expr,value) __builtin_expect ((expr),(value))
334	# define noinline __attribute__ ((noinline))	466	# define noinline __attribute__ ((noinline))
335	#else	467	#else
…		…
348	# define inline_speed static noinline	480	# define inline_speed static noinline
349	#else	481	#else
350	# define inline_speed static inline	482	# define inline_speed static inline
351	#endif	483	#endif
352		484
353	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	485	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		486
		487	#if EV_MINPRI == EV_MAXPRI
		488	# define ABSPRI(w) (((W)w), 0)
		489	#else
354	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	490	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		491	#endif
355		492
356	#define EMPTY /* required for microsofts broken pseudo-c compiler */	493	#define EMPTY /* required for microsofts broken pseudo-c compiler */
357	#define EMPTY2(a,b) /* used to suppress some warnings */	494	#define EMPTY2(a,b) /* used to suppress some warnings */
358		495
359	typedef ev_watcher *W;	496	typedef ev_watcher *W;
…		…
361	typedef ev_watcher_time *WT;	498	typedef ev_watcher_time *WT;
362		499
363	#define ev_active(w) ((W)(w))->active	500	#define ev_active(w) ((W)(w))->active
364	#define ev_at(w) ((WT)(w))->at	501	#define ev_at(w) ((WT)(w))->at
365		502
366	#if EV_USE_MONOTONIC	503	#if EV_USE_REALTIME
367	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	504	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
368	/* giving it a reasonably high chance of working on typical architetcures */	505	/* giving it a reasonably high chance of working on typical architetcures */
		506	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		507	#endif
		508
		509	#if EV_USE_MONOTONIC
369	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	510	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		511	#endif
		512
		513	#ifndef EV_FD_TO_WIN32_HANDLE
		514	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		515	#endif
		516	#ifndef EV_WIN32_HANDLE_TO_FD
		517	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		518	#endif
		519	#ifndef EV_WIN32_CLOSE_FD
		520	# define EV_WIN32_CLOSE_FD(fd) close (fd)
370	#endif	521	#endif
371		522
372	#ifdef _WIN32	523	#ifdef _WIN32
373	# include "ev_win32.c"	524	# include "ev_win32.c"
374	#endif	525	#endif
…		…
382	{	533	{
383	syserr_cb = cb;	534	syserr_cb = cb;
384	}	535	}
385		536
386	static void noinline	537	static void noinline
387	syserr (const char *msg)	538	ev_syserr (const char *msg)
388	{	539	{
389	if (!msg)	540	if (!msg)
390	msg = "(libev) system error";	541	msg = "(libev) system error";
391		542
392	if (syserr_cb)	543	if (syserr_cb)
…		…
438	#define ev_malloc(size) ev_realloc (0, (size))	589	#define ev_malloc(size) ev_realloc (0, (size))
439	#define ev_free(ptr) ev_realloc ((ptr), 0)	590	#define ev_free(ptr) ev_realloc ((ptr), 0)
440		591
441	/*****************************************************************************/	592	/*****************************************************************************/
442		593
		594	/* set in reify when reification needed */
		595	#define EV_ANFD_REIFY 1
		596
		597	/* file descriptor info structure */
443	typedef struct	598	typedef struct
444	{	599	{
445	WL head;	600	WL head;
446	unsigned char events;	601	unsigned char events; /* the events watched for */
		602	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		603	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
447	unsigned char reify;	604	unsigned char unused;
		605	#if EV_USE_EPOLL
		606	unsigned int egen; /* generation counter to counter epoll bugs */
		607	#endif
448	#if EV_SELECT_IS_WINSOCKET	608	#if EV_SELECT_IS_WINSOCKET
449	SOCKET handle;	609	SOCKET handle;
450	#endif	610	#endif
451	} ANFD;	611	} ANFD;
452		612
		613	/* stores the pending event set for a given watcher */
453	typedef struct	614	typedef struct
454	{	615	{
455	W w;	616	W w;
456	int events;	617	int events; /* the pending event set for the given watcher */
457	} ANPENDING;	618	} ANPENDING;
458		619
459	#if EV_USE_INOTIFY	620	#if EV_USE_INOTIFY
460	/* hash table entry per inotify-id */	621	/* hash table entry per inotify-id */
461	typedef struct	622	typedef struct
…		…
464	} ANFS;	625	} ANFS;
465	#endif	626	#endif
466		627
467	/* Heap Entry */	628	/* Heap Entry */
468	#if EV_HEAP_CACHE_AT	629	#if EV_HEAP_CACHE_AT
		630	/* a heap element */
469	typedef struct {	631	typedef struct {
470	ev_tstamp at;	632	ev_tstamp at;
471	WT w;	633	WT w;
472	} ANHE;	634	} ANHE;
473		635
474	#define ANHE_w(he) (he).w /* access watcher, read-write */	636	#define ANHE_w(he) (he).w /* access watcher, read-write */
475	#define ANHE_at(he) (he).at /* access cached at, read-only */	637	#define ANHE_at(he) (he).at /* access cached at, read-only */
476	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */	638	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
477	#else	639	#else
		640	/* a heap element */
478	typedef WT ANHE;	641	typedef WT ANHE;
479		642
480	#define ANHE_w(he) (he)	643	#define ANHE_w(he) (he)
481	#define ANHE_at(he) (he)->at	644	#define ANHE_at(he) (he)->at
482	#define ANHE_at_cache(he)	645	#define ANHE_at_cache(he)
…		…
506		669
507	static int ev_default_loop_ptr;	670	static int ev_default_loop_ptr;
508		671
509	#endif	672	#endif
510		673
		674	#if EV_MINIMAL < 2
		675	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		676	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		677	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		678	#else
		679	# define EV_RELEASE_CB (void)0
		680	# define EV_ACQUIRE_CB (void)0
		681	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		682	#endif
		683
		684	#define EVUNLOOP_RECURSE 0x80
		685
511	/*****************************************************************************/	686	/*****************************************************************************/
512		687
		688	#ifndef EV_HAVE_EV_TIME
513	ev_tstamp	689	ev_tstamp
514	ev_time (void)	690	ev_time (void)
515	{	691	{
516	#if EV_USE_REALTIME	692	#if EV_USE_REALTIME
		693	if (expect_true (have_realtime))
		694	{
517	struct timespec ts;	695	struct timespec ts;
518	clock_gettime (CLOCK_REALTIME, &ts);	696	clock_gettime (CLOCK_REALTIME, &ts);
519	return ts.tv_sec + ts.tv_nsec * 1e-9;	697	return ts.tv_sec + ts.tv_nsec * 1e-9;
520	#else	698	}
		699	#endif
		700
521	struct timeval tv;	701	struct timeval tv;
522	gettimeofday (&tv, 0);	702	gettimeofday (&tv, 0);
523	return tv.tv_sec + tv.tv_usec * 1e-6;	703	return tv.tv_sec + tv.tv_usec * 1e-6;
524	#endif
525	}	704	}
		705	#endif
526		706
527	ev_tstamp inline_size	707	inline_size ev_tstamp
528	get_clock (void)	708	get_clock (void)
529	{	709	{
530	#if EV_USE_MONOTONIC	710	#if EV_USE_MONOTONIC
531	if (expect_true (have_monotonic))	711	if (expect_true (have_monotonic))
532	{	712	{
…		…
566		746
567	tv.tv_sec = (time_t)delay;	747	tv.tv_sec = (time_t)delay;
568	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	748	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
569		749
570	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	750	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
571	/* somehting nto guaranteed by newer posix versions, but guaranteed */	751	/* something not guaranteed by newer posix versions, but guaranteed */
572	/* by older ones */	752	/* by older ones */
573	select (0, 0, 0, 0, &tv);	753	select (0, 0, 0, 0, &tv);
574	#endif	754	#endif
575	}	755	}
576	}	756	}
577		757
578	/*****************************************************************************/	758	/*****************************************************************************/
579		759
580	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	760	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
581		761
582	int inline_size	762	/* find a suitable new size for the given array, */
		763	/* hopefully by rounding to a ncie-to-malloc size */
		764	inline_size int
583	array_nextsize (int elem, int cur, int cnt)	765	array_nextsize (int elem, int cur, int cnt)
584	{	766	{
585	int ncur = cur + 1;	767	int ncur = cur + 1;
586		768
587	do	769	do
…		…
604	array_realloc (int elem, void *base, int *cur, int cnt)	786	array_realloc (int elem, void *base, int *cur, int cnt)
605	{	787	{
606	*cur = array_nextsize (elem, *cur, cnt);	788	*cur = array_nextsize (elem, *cur, cnt);
607	return ev_realloc (base, elem * *cur);	789	return ev_realloc (base, elem * *cur);
608	}	790	}
		791
		792	#define array_init_zero(base,count) \
		793	memset ((void *)(base), 0, sizeof (*(base)) * (count))
609		794
610	#define array_needsize(type,base,cur,cnt,init) \	795	#define array_needsize(type,base,cur,cnt,init) \
611	if (expect_false ((cnt) > (cur))) \	796	if (expect_false ((cnt) > (cur))) \
612	{ \	797	{ \
613	int ocur_ = (cur); \	798	int ocur_ = (cur); \
…		…
625	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	810	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
626	}	811	}
627	#endif	812	#endif
628		813
629	#define array_free(stem, idx) \	814	#define array_free(stem, idx) \
630	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	815	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
631		816
632	/*****************************************************************************/	817	/*****************************************************************************/
		818
		819	/* dummy callback for pending events */
		820	static void noinline
		821	pendingcb (EV_P_ ev_prepare *w, int revents)
		822	{
		823	}
633		824
634	void noinline	825	void noinline
635	ev_feed_event (EV_P_ void *w, int revents)	826	ev_feed_event (EV_P_ void *w, int revents)
636	{	827	{
637	W w_ = (W)w;	828	W w_ = (W)w;
…		…
646	pendings [pri][w_->pending - 1].w = w_;	837	pendings [pri][w_->pending - 1].w = w_;
647	pendings [pri][w_->pending - 1].events = revents;	838	pendings [pri][w_->pending - 1].events = revents;
648	}	839	}
649	}	840	}
650		841
651	void inline_speed	842	inline_speed void
		843	feed_reverse (EV_P_ W w)
		844	{
		845	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		846	rfeeds [rfeedcnt++] = w;
		847	}
		848
		849	inline_size void
		850	feed_reverse_done (EV_P_ int revents)
		851	{
		852	do
		853	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		854	while (rfeedcnt);
		855	}
		856
		857	inline_speed void
652	queue_events (EV_P_ W *events, int eventcnt, int type)	858	queue_events (EV_P_ W *events, int eventcnt, int type)
653	{	859	{
654	int i;	860	int i;
655		861
656	for (i = 0; i < eventcnt; ++i)	862	for (i = 0; i < eventcnt; ++i)
657	ev_feed_event (EV_A_ events [i], type);	863	ev_feed_event (EV_A_ events [i], type);
658	}	864	}
659		865
660	/*****************************************************************************/	866	/*****************************************************************************/
661		867
662	void inline_size	868	inline_speed void
663	anfds_init (ANFD *base, int count)
664	{
665	while (count--)
666	{
667	base->head = 0;
668	base->events = EV_NONE;
669	base->reify = 0;
670
671	++base;
672	}
673	}
674
675	void inline_speed
676	fd_event (EV_P_ int fd, int revents)	869	fd_event_nc (EV_P_ int fd, int revents)
677	{	870	{
678	ANFD *anfd = anfds + fd;	871	ANFD *anfd = anfds + fd;
679	ev_io *w;	872	ev_io *w;
680		873
681	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	874	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
685	if (ev)	878	if (ev)
686	ev_feed_event (EV_A_ (W)w, ev);	879	ev_feed_event (EV_A_ (W)w, ev);
687	}	880	}
688	}	881	}
689		882
		883	/* do not submit kernel events for fds that have reify set */
		884	/* because that means they changed while we were polling for new events */
		885	inline_speed void
		886	fd_event (EV_P_ int fd, int revents)
		887	{
		888	ANFD *anfd = anfds + fd;
		889
		890	if (expect_true (!anfd->reify))
		891	fd_event_nc (EV_A_ fd, revents);
		892	}
		893
690	void	894	void
691	ev_feed_fd_event (EV_P_ int fd, int revents)	895	ev_feed_fd_event (EV_P_ int fd, int revents)
692	{	896	{
693	if (fd >= 0 && fd < anfdmax)	897	if (fd >= 0 && fd < anfdmax)
694	fd_event (EV_A_ fd, revents);	898	fd_event_nc (EV_A_ fd, revents);
695	}	899	}
696		900
697	void inline_size	901	/* make sure the external fd watch events are in-sync */
		902	/* with the kernel/libev internal state */
		903	inline_size void
698	fd_reify (EV_P)	904	fd_reify (EV_P)
699	{	905	{
700	int i;	906	int i;
701		907
702	for (i = 0; i < fdchangecnt; ++i)	908	for (i = 0; i < fdchangecnt; ++i)
…		…
712		918
713	#if EV_SELECT_IS_WINSOCKET	919	#if EV_SELECT_IS_WINSOCKET
714	if (events)	920	if (events)
715	{	921	{
716	unsigned long arg;	922	unsigned long arg;
717	#ifdef EV_FD_TO_WIN32_HANDLE
718	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	923	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
719	#else
720	anfd->handle = _get_osfhandle (fd);
721	#endif
722	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	924	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
723	}	925	}
724	#endif	926	#endif
725		927
726	{	928	{
727	unsigned char o_events = anfd->events;	929	unsigned char o_events = anfd->events;
728	unsigned char o_reify = anfd->reify;	930	unsigned char o_reify = anfd->reify;
729		931
730	anfd->reify = 0;	932	anfd->reify = 0;
731	anfd->events = events;	933	anfd->events = events;
732		934
733	if (o_events != events || o_reify & EV_IOFDSET)	935	if (o_events != events || o_reify & EV__IOFDSET)
734	backend_modify (EV_A_ fd, o_events, events);	936	backend_modify (EV_A_ fd, o_events, events);
735	}	937	}
736	}	938	}
737		939
738	fdchangecnt = 0;	940	fdchangecnt = 0;
739	}	941	}
740		942
741	void inline_size	943	/* something about the given fd changed */
		944	inline_size void
742	fd_change (EV_P_ int fd, int flags)	945	fd_change (EV_P_ int fd, int flags)
743	{	946	{
744	unsigned char reify = anfds [fd].reify;	947	unsigned char reify = anfds [fd].reify;
745	anfds [fd].reify |= flags;	948	anfds [fd].reify |= flags;
746		949
…		…
750	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	953	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
751	fdchanges [fdchangecnt - 1] = fd;	954	fdchanges [fdchangecnt - 1] = fd;
752	}	955	}
753	}	956	}
754		957
755	void inline_speed	958	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		959	inline_speed void
756	fd_kill (EV_P_ int fd)	960	fd_kill (EV_P_ int fd)
757	{	961	{
758	ev_io *w;	962	ev_io *w;
759		963
760	while ((w = (ev_io *)anfds [fd].head))	964	while ((w = (ev_io *)anfds [fd].head))
…		…
762	ev_io_stop (EV_A_ w);	966	ev_io_stop (EV_A_ w);
763	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	967	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
764	}	968	}
765	}	969	}
766		970
767	int inline_size	971	/* check whether the given fd is atcually valid, for error recovery */
		972	inline_size int
768	fd_valid (int fd)	973	fd_valid (int fd)
769	{	974	{
770	#ifdef _WIN32	975	#ifdef _WIN32
771	return _get_osfhandle (fd) != -1;	976	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
772	#else	977	#else
773	return fcntl (fd, F_GETFD) != -1;	978	return fcntl (fd, F_GETFD) != -1;
774	#endif	979	#endif
775	}	980	}
776		981
…		…
794		999
795	for (fd = anfdmax; fd--; )	1000	for (fd = anfdmax; fd--; )
796	if (anfds [fd].events)	1001	if (anfds [fd].events)
797	{	1002	{
798	fd_kill (EV_A_ fd);	1003	fd_kill (EV_A_ fd);
799	return;	1004	break;
800	}	1005	}
801	}	1006	}
802		1007
803	/* usually called after fork if backend needs to re-arm all fds from scratch */	1008	/* usually called after fork if backend needs to re-arm all fds from scratch */
804	static void noinline	1009	static void noinline
…		…
808		1013
809	for (fd = 0; fd < anfdmax; ++fd)	1014	for (fd = 0; fd < anfdmax; ++fd)
810	if (anfds [fd].events)	1015	if (anfds [fd].events)
811	{	1016	{
812	anfds [fd].events = 0;	1017	anfds [fd].events = 0;
		1018	anfds [fd].emask = 0;
813	fd_change (EV_A_ fd, EV_IOFDSET | 1);	1019	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
814	}	1020	}
815	}	1021	}
816		1022
817	/*****************************************************************************/	1023	/*****************************************************************************/
818		1024
…		…
834	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	1040	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
835	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	1041	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
836	#define UPHEAP_DONE(p,k) ((p) == (k))	1042	#define UPHEAP_DONE(p,k) ((p) == (k))
837		1043
838	/* away from the root */	1044	/* away from the root */
839	void inline_speed	1045	inline_speed void
840	downheap (ANHE *heap, int N, int k)	1046	downheap (ANHE *heap, int N, int k)
841	{	1047	{
842	ANHE he = heap [k];	1048	ANHE he = heap [k];
843	ANHE *E = heap + N + HEAP0;	1049	ANHE *E = heap + N + HEAP0;
844		1050
…		…
884	#define HEAP0 1	1090	#define HEAP0 1
885	#define HPARENT(k) ((k) >> 1)	1091	#define HPARENT(k) ((k) >> 1)
886	#define UPHEAP_DONE(p,k) (!(p))	1092	#define UPHEAP_DONE(p,k) (!(p))
887		1093
888	/* away from the root */	1094	/* away from the root */
889	void inline_speed	1095	inline_speed void
890	downheap (ANHE *heap, int N, int k)	1096	downheap (ANHE *heap, int N, int k)
891	{	1097	{
892	ANHE he = heap [k];	1098	ANHE he = heap [k];
893		1099
894	for (;;)	1100	for (;;)
895	{	1101	{
896	int c = k << 1;	1102	int c = k << 1;
897		1103
898	if (c > N + HEAP0 - 1)	1104	if (c >= N + HEAP0)
899	break;	1105	break;
900		1106
901	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1107	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
902	? 1 : 0;	1108	? 1 : 0;
903		1109
…		…
914	ev_active (ANHE_w (he)) = k;	1120	ev_active (ANHE_w (he)) = k;
915	}	1121	}
916	#endif	1122	#endif
917		1123
918	/* towards the root */	1124	/* towards the root */
919	void inline_speed	1125	inline_speed void
920	upheap (ANHE *heap, int k)	1126	upheap (ANHE *heap, int k)
921	{	1127	{
922	ANHE he = heap [k];	1128	ANHE he = heap [k];
923		1129
924	for (;;)	1130	for (;;)
…		…
935		1141
936	heap [k] = he;	1142	heap [k] = he;
937	ev_active (ANHE_w (he)) = k;	1143	ev_active (ANHE_w (he)) = k;
938	}	1144	}
939		1145
940	void inline_size	1146	/* move an element suitably so it is in a correct place */
		1147	inline_size void
941	adjustheap (ANHE *heap, int N, int k)	1148	adjustheap (ANHE *heap, int N, int k)
942	{	1149	{
943	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1150	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
944	upheap (heap, k);	1151	upheap (heap, k);
945	else	1152	else
946	downheap (heap, N, k);	1153	downheap (heap, N, k);
947	}	1154	}
948		1155
949	/* rebuild the heap: this function is used only once and executed rarely */	1156	/* rebuild the heap: this function is used only once and executed rarely */
950	void inline_size	1157	inline_size void
951	reheap (ANHE *heap, int N)	1158	reheap (ANHE *heap, int N)
952	{	1159	{
953	int i;	1160	int i;
954		1161
955	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1162	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
…		…
958	upheap (heap, i + HEAP0);	1165	upheap (heap, i + HEAP0);
959	}	1166	}
960		1167
961	/*****************************************************************************/	1168	/*****************************************************************************/
962		1169
		1170	/* associate signal watchers to a signal signal */
963	typedef struct	1171	typedef struct
964	{	1172	{
		1173	EV_ATOMIC_T pending;
		1174	#if EV_MULTIPLICITY
		1175	EV_P;
		1176	#endif
965	WL head;	1177	WL head;
966	EV_ATOMIC_T gotsig;
967	} ANSIG;	1178	} ANSIG;
968		1179
969	static ANSIG *signals;	1180	static ANSIG signals [EV_NSIG - 1];
970	static int signalmax;
971
972	static EV_ATOMIC_T gotsig;
973
974	void inline_size
975	signals_init (ANSIG *base, int count)
976	{
977	while (count--)
978	{
979	base->head = 0;
980	base->gotsig = 0;
981
982	++base;
983	}
984	}
985		1181
986	/*****************************************************************************/	1182	/*****************************************************************************/
987		1183
988	void inline_speed	1184	/* used to prepare libev internal fd's */
		1185	/* this is not fork-safe */
		1186	inline_speed void
989	fd_intern (int fd)	1187	fd_intern (int fd)
990	{	1188	{
991	#ifdef _WIN32	1189	#ifdef _WIN32
992	unsigned long arg = 1;	1190	unsigned long arg = 1;
993	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1191	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
994	#else	1192	#else
995	fcntl (fd, F_SETFD, FD_CLOEXEC);	1193	fcntl (fd, F_SETFD, FD_CLOEXEC);
996	fcntl (fd, F_SETFL, O_NONBLOCK);	1194	fcntl (fd, F_SETFL, O_NONBLOCK);
997	#endif	1195	#endif
998	}	1196	}
999		1197
1000	static void noinline	1198	static void noinline
1001	evpipe_init (EV_P)	1199	evpipe_init (EV_P)
1002	{	1200	{
1003	if (!ev_is_active (&pipeev))	1201	if (!ev_is_active (&pipe_w))
1004	{	1202	{
1005	#if EV_USE_EVENTFD	1203	#if EV_USE_EVENTFD
		1204	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1205	if (evfd < 0 && errno == EINVAL)
1006	if ((evfd = eventfd (0, 0)) >= 0)	1206	evfd = eventfd (0, 0);
		1207
		1208	if (evfd >= 0)
1007	{	1209	{
1008	evpipe [0] = -1;	1210	evpipe [0] = -1;
1009	fd_intern (evfd);	1211	fd_intern (evfd); /* doing it twice doesn't hurt */
1010	ev_io_set (&pipeev, evfd, EV_READ);	1212	ev_io_set (&pipe_w, evfd, EV_READ);
1011	}	1213	}
1012	else	1214	else
1013	#endif	1215	#endif
1014	{	1216	{
1015	while (pipe (evpipe))	1217	while (pipe (evpipe))
1016	syserr ("(libev) error creating signal/async pipe");	1218	ev_syserr ("(libev) error creating signal/async pipe");
1017		1219
1018	fd_intern (evpipe [0]);	1220	fd_intern (evpipe [0]);
1019	fd_intern (evpipe [1]);	1221	fd_intern (evpipe [1]);
1020	ev_io_set (&pipeev, evpipe [0], EV_READ);	1222	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1021	}	1223	}
1022		1224
1023	ev_io_start (EV_A_ &pipeev);	1225	ev_io_start (EV_A_ &pipe_w);
1024	ev_unref (EV_A); /* watcher should not keep loop alive */	1226	ev_unref (EV_A); /* watcher should not keep loop alive */
1025	}	1227	}
1026	}	1228	}
1027		1229
1028	void inline_size	1230	inline_size void
1029	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1231	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1030	{	1232	{
1031	if (!*flag)	1233	if (!*flag)
1032	{	1234	{
1033	int old_errno = errno; /* save errno because write might clobber it */	1235	int old_errno = errno; /* save errno because write might clobber it */
…		…
1046		1248
1047	errno = old_errno;	1249	errno = old_errno;
1048	}	1250	}
1049	}	1251	}
1050		1252
		1253	/* called whenever the libev signal pipe */
		1254	/* got some events (signal, async) */
1051	static void	1255	static void
1052	pipecb (EV_P_ ev_io *iow, int revents)	1256	pipecb (EV_P_ ev_io *iow, int revents)
1053	{	1257	{
		1258	int i;
		1259
1054	#if EV_USE_EVENTFD	1260	#if EV_USE_EVENTFD
1055	if (evfd >= 0)	1261	if (evfd >= 0)
1056	{	1262	{
1057	uint64_t counter;	1263	uint64_t counter;
1058	read (evfd, &counter, sizeof (uint64_t));	1264	read (evfd, &counter, sizeof (uint64_t));
…		…
1062	{	1268	{
1063	char dummy;	1269	char dummy;
1064	read (evpipe [0], &dummy, 1);	1270	read (evpipe [0], &dummy, 1);
1065	}	1271	}
1066		1272
1067	if (gotsig && ev_is_default_loop (EV_A))	1273	if (sig_pending)
1068	{	1274	{
1069	int signum;	1275	sig_pending = 0;
1070	gotsig = 0;
1071		1276
1072	for (signum = signalmax; signum--; )	1277	for (i = EV_NSIG - 1; i--; )
1073	if (signals [signum].gotsig)	1278	if (expect_false (signals [i].pending))
1074	ev_feed_signal_event (EV_A_ signum + 1);	1279	ev_feed_signal_event (EV_A_ i + 1);
1075	}	1280	}
1076		1281
1077	#if EV_ASYNC_ENABLE	1282	#if EV_ASYNC_ENABLE
1078	if (gotasync)	1283	if (async_pending)
1079	{	1284	{
1080	int i;	1285	async_pending = 0;
1081	gotasync = 0;
1082		1286
1083	for (i = asynccnt; i--; )	1287	for (i = asynccnt; i--; )
1084	if (asyncs [i]->sent)	1288	if (asyncs [i]->sent)
1085	{	1289	{
1086	asyncs [i]->sent = 0;	1290	asyncs [i]->sent = 0;
…		…
1094		1298
1095	static void	1299	static void
1096	ev_sighandler (int signum)	1300	ev_sighandler (int signum)
1097	{	1301	{
1098	#if EV_MULTIPLICITY	1302	#if EV_MULTIPLICITY
1099	struct ev_loop *loop = &default_loop_struct;	1303	EV_P = signals [signum - 1].loop;
1100	#endif	1304	#endif
1101		1305
1102	#if _WIN32	1306	#ifdef _WIN32
1103	signal (signum, ev_sighandler);	1307	signal (signum, ev_sighandler);
1104	#endif	1308	#endif
1105		1309
1106	signals [signum - 1].gotsig = 1;	1310	signals [signum - 1].pending = 1;
1107	evpipe_write (EV_A_ &gotsig);	1311	evpipe_write (EV_A_ &sig_pending);
1108	}	1312	}
1109		1313
1110	void noinline	1314	void noinline
1111	ev_feed_signal_event (EV_P_ int signum)	1315	ev_feed_signal_event (EV_P_ int signum)
1112	{	1316	{
1113	WL w;	1317	WL w;
1114		1318
		1319	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1320	return;
		1321
		1322	--signum;
		1323
1115	#if EV_MULTIPLICITY	1324	#if EV_MULTIPLICITY
1116	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1325	/* it is permissible to try to feed a signal to the wrong loop */
1117	#endif	1326	/* or, likely more useful, feeding a signal nobody is waiting for */
1118		1327
1119	--signum;	1328	if (expect_false (signals [signum].loop != EV_A))
1120
1121	if (signum < 0 || signum >= signalmax)
1122	return;	1329	return;
		1330	#endif
1123		1331
1124	signals [signum].gotsig = 0;	1332	signals [signum].pending = 0;
1125		1333
1126	for (w = signals [signum].head; w; w = w->next)	1334	for (w = signals [signum].head; w; w = w->next)
1127	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1335	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1128	}	1336	}
1129		1337
		1338	#if EV_USE_SIGNALFD
		1339	static void
		1340	sigfdcb (EV_P_ ev_io *iow, int revents)
		1341	{
		1342	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1343
		1344	for (;;)
		1345	{
		1346	ssize_t res = read (sigfd, si, sizeof (si));
		1347
		1348	/* not ISO-C, as res might be -1, but works with SuS */
		1349	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1350	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1351
		1352	if (res < (ssize_t)sizeof (si))
		1353	break;
		1354	}
		1355	}
		1356	#endif
		1357
1130	/*****************************************************************************/	1358	/*****************************************************************************/
1131		1359
1132	static WL childs [EV_PID_HASHSIZE];	1360	static WL childs [EV_PID_HASHSIZE];
1133		1361
1134	#ifndef _WIN32	1362	#ifndef _WIN32
…		…
1137		1365
1138	#ifndef WIFCONTINUED	1366	#ifndef WIFCONTINUED
1139	# define WIFCONTINUED(status) 0	1367	# define WIFCONTINUED(status) 0
1140	#endif	1368	#endif
1141		1369
1142	void inline_speed	1370	/* handle a single child status event */
		1371	inline_speed void
1143	child_reap (EV_P_ int chain, int pid, int status)	1372	child_reap (EV_P_ int chain, int pid, int status)
1144	{	1373	{
1145	ev_child *w;	1374	ev_child *w;
1146	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1375	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1147		1376
…		…
1160		1389
1161	#ifndef WCONTINUED	1390	#ifndef WCONTINUED
1162	# define WCONTINUED 0	1391	# define WCONTINUED 0
1163	#endif	1392	#endif
1164		1393
		1394	/* called on sigchld etc., calls waitpid */
1165	static void	1395	static void
1166	childcb (EV_P_ ev_signal *sw, int revents)	1396	childcb (EV_P_ ev_signal *sw, int revents)
1167	{	1397	{
1168	int pid, status;	1398	int pid, status;
1169		1399
…		…
1250	/* kqueue is borked on everything but netbsd apparently */	1480	/* kqueue is borked on everything but netbsd apparently */
1251	/* it usually doesn't work correctly on anything but sockets and pipes */	1481	/* it usually doesn't work correctly on anything but sockets and pipes */
1252	flags &= ~EVBACKEND_KQUEUE;	1482	flags &= ~EVBACKEND_KQUEUE;
1253	#endif	1483	#endif
1254	#ifdef __APPLE__	1484	#ifdef __APPLE__
1255	// flags &= ~EVBACKEND_KQUEUE; for documentation	1485	/* only select works correctly on that "unix-certified" platform */
1256	flags &= ~EVBACKEND_POLL;	1486	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1487	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1257	#endif	1488	#endif
1258		1489
1259	return flags;	1490	return flags;
1260	}	1491	}
1261		1492
…		…
1275	ev_backend (EV_P)	1506	ev_backend (EV_P)
1276	{	1507	{
1277	return backend;	1508	return backend;
1278	}	1509	}
1279		1510
		1511	#if EV_MINIMAL < 2
1280	unsigned int	1512	unsigned int
1281	ev_loop_count (EV_P)	1513	ev_loop_count (EV_P)
1282	{	1514	{
1283	return loop_count;	1515	return loop_count;
1284	}	1516	}
1285		1517
		1518	unsigned int
		1519	ev_loop_depth (EV_P)
		1520	{
		1521	return loop_depth;
		1522	}
		1523
1286	void	1524	void
1287	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1525	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1288	{	1526	{
1289	io_blocktime = interval;	1527	io_blocktime = interval;
1290	}	1528	}
…		…
1293	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1531	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1294	{	1532	{
1295	timeout_blocktime = interval;	1533	timeout_blocktime = interval;
1296	}	1534	}
1297		1535
		1536	void
		1537	ev_set_userdata (EV_P_ void *data)
		1538	{
		1539	userdata = data;
		1540	}
		1541
		1542	void *
		1543	ev_userdata (EV_P)
		1544	{
		1545	return userdata;
		1546	}
		1547
		1548	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1549	{
		1550	invoke_cb = invoke_pending_cb;
		1551	}
		1552
		1553	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1554	{
		1555	release_cb = release;
		1556	acquire_cb = acquire;
		1557	}
		1558	#endif
		1559
		1560	/* initialise a loop structure, must be zero-initialised */
1298	static void noinline	1561	static void noinline
1299	loop_init (EV_P_ unsigned int flags)	1562	loop_init (EV_P_ unsigned int flags)
1300	{	1563	{
1301	if (!backend)	1564	if (!backend)
1302	{	1565	{
		1566	#if EV_USE_REALTIME
		1567	if (!have_realtime)
		1568	{
		1569	struct timespec ts;
		1570
		1571	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1572	have_realtime = 1;
		1573	}
		1574	#endif
		1575
1303	#if EV_USE_MONOTONIC	1576	#if EV_USE_MONOTONIC
		1577	if (!have_monotonic)
1304	{	1578	{
1305	struct timespec ts;	1579	struct timespec ts;
		1580
1306	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1581	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1307	have_monotonic = 1;	1582	have_monotonic = 1;
1308	}	1583	}
1309	#endif	1584	#endif
		1585
		1586	/* pid check not overridable via env */
		1587	#ifndef _WIN32
		1588	if (flags & EVFLAG_FORKCHECK)
		1589	curpid = getpid ();
		1590	#endif
		1591
		1592	if (!(flags & EVFLAG_NOENV)
		1593	&& !enable_secure ()
		1594	&& getenv ("LIBEV_FLAGS"))
		1595	flags = atoi (getenv ("LIBEV_FLAGS"));
1310		1596
1311	ev_rt_now = ev_time ();	1597	ev_rt_now = ev_time ();
1312	mn_now = get_clock ();	1598	mn_now = get_clock ();
1313	now_floor = mn_now;	1599	now_floor = mn_now;
1314	rtmn_diff = ev_rt_now - mn_now;	1600	rtmn_diff = ev_rt_now - mn_now;
		1601	#if EV_MINIMAL < 2
		1602	invoke_cb = ev_invoke_pending;
		1603	#endif
1315		1604
1316	io_blocktime = 0.;	1605	io_blocktime = 0.;
1317	timeout_blocktime = 0.;	1606	timeout_blocktime = 0.;
1318	backend = 0;	1607	backend = 0;
1319	backend_fd = -1;	1608	backend_fd = -1;
1320	gotasync = 0;	1609	sig_pending = 0;
		1610	#if EV_ASYNC_ENABLE
		1611	async_pending = 0;
		1612	#endif
1321	#if EV_USE_INOTIFY	1613	#if EV_USE_INOTIFY
1322	fs_fd = -2;	1614	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1323	#endif	1615	#endif
1324		1616	#if EV_USE_SIGNALFD
1325	/* pid check not overridable via env */	1617	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1326	#ifndef _WIN32
1327	if (flags & EVFLAG_FORKCHECK)
1328	curpid = getpid ();
1329	#endif	1618	#endif
1330
1331	if (!(flags & EVFLAG_NOENV)
1332	&& !enable_secure ()
1333	&& getenv ("LIBEV_FLAGS"))
1334	flags = atoi (getenv ("LIBEV_FLAGS"));
1335		1619
1336	if (!(flags & 0x0000ffffU))	1620	if (!(flags & 0x0000ffffU))
1337	flags |= ev_recommended_backends ();	1621	flags |= ev_recommended_backends ();
1338		1622
1339	#if EV_USE_PORT	1623	#if EV_USE_PORT
…		…
1350	#endif	1634	#endif
1351	#if EV_USE_SELECT	1635	#if EV_USE_SELECT
1352	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1636	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1353	#endif	1637	#endif
1354		1638
		1639	ev_prepare_init (&pending_w, pendingcb);
		1640
1355	ev_init (&pipeev, pipecb);	1641	ev_init (&pipe_w, pipecb);
1356	ev_set_priority (&pipeev, EV_MAXPRI);	1642	ev_set_priority (&pipe_w, EV_MAXPRI);
1357	}	1643	}
1358	}	1644	}
1359		1645
		1646	/* free up a loop structure */
1360	static void noinline	1647	static void noinline
1361	loop_destroy (EV_P)	1648	loop_destroy (EV_P)
1362	{	1649	{
1363	int i;	1650	int i;
1364		1651
1365	if (ev_is_active (&pipeev))	1652	if (ev_is_active (&pipe_w))
1366	{	1653	{
1367	ev_ref (EV_A); /* signal watcher */	1654	/*ev_ref (EV_A);*/
1368	ev_io_stop (EV_A_ &pipeev);	1655	/*ev_io_stop (EV_A_ &pipe_w);*/
1369		1656
1370	#if EV_USE_EVENTFD	1657	#if EV_USE_EVENTFD
1371	if (evfd >= 0)	1658	if (evfd >= 0)
1372	close (evfd);	1659	close (evfd);
1373	#endif	1660	#endif
1374		1661
1375	if (evpipe [0] >= 0)	1662	if (evpipe [0] >= 0)
1376	{	1663	{
1377	close (evpipe [0]);	1664	EV_WIN32_CLOSE_FD (evpipe [0]);
1378	close (evpipe [1]);	1665	EV_WIN32_CLOSE_FD (evpipe [1]);
1379	}	1666	}
1380	}	1667	}
		1668
		1669	#if EV_USE_SIGNALFD
		1670	if (ev_is_active (&sigfd_w))
		1671	close (sigfd);
		1672	#endif
1381		1673
1382	#if EV_USE_INOTIFY	1674	#if EV_USE_INOTIFY
1383	if (fs_fd >= 0)	1675	if (fs_fd >= 0)
1384	close (fs_fd);	1676	close (fs_fd);
1385	#endif	1677	#endif
…		…
1409	#if EV_IDLE_ENABLE	1701	#if EV_IDLE_ENABLE
1410	array_free (idle, [i]);	1702	array_free (idle, [i]);
1411	#endif	1703	#endif
1412	}	1704	}
1413		1705
1414	ev_free (anfds); anfdmax = 0;	1706	ev_free (anfds); anfds = 0; anfdmax = 0;
1415		1707
1416	/* have to use the microsoft-never-gets-it-right macro */	1708	/* have to use the microsoft-never-gets-it-right macro */
		1709	array_free (rfeed, EMPTY);
1417	array_free (fdchange, EMPTY);	1710	array_free (fdchange, EMPTY);
1418	array_free (timer, EMPTY);	1711	array_free (timer, EMPTY);
1419	#if EV_PERIODIC_ENABLE	1712	#if EV_PERIODIC_ENABLE
1420	array_free (periodic, EMPTY);	1713	array_free (periodic, EMPTY);
1421	#endif	1714	#endif
…		…
1430		1723
1431	backend = 0;	1724	backend = 0;
1432	}	1725	}
1433		1726
1434	#if EV_USE_INOTIFY	1727	#if EV_USE_INOTIFY
1435	void inline_size infy_fork (EV_P);	1728	inline_size void infy_fork (EV_P);
1436	#endif	1729	#endif
1437		1730
1438	void inline_size	1731	inline_size void
1439	loop_fork (EV_P)	1732	loop_fork (EV_P)
1440	{	1733	{
1441	#if EV_USE_PORT	1734	#if EV_USE_PORT
1442	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1735	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1443	#endif	1736	#endif
…		…
1449	#endif	1742	#endif
1450	#if EV_USE_INOTIFY	1743	#if EV_USE_INOTIFY
1451	infy_fork (EV_A);	1744	infy_fork (EV_A);
1452	#endif	1745	#endif
1453		1746
1454	if (ev_is_active (&pipeev))	1747	if (ev_is_active (&pipe_w))
1455	{	1748	{
1456	/* this "locks" the handlers against writing to the pipe */	1749	/* this "locks" the handlers against writing to the pipe */
1457	/* while we modify the fd vars */	1750	/* while we modify the fd vars */
1458	gotsig = 1;	1751	sig_pending = 1;
1459	#if EV_ASYNC_ENABLE	1752	#if EV_ASYNC_ENABLE
1460	gotasync = 1;	1753	async_pending = 1;
1461	#endif	1754	#endif
1462		1755
1463	ev_ref (EV_A);	1756	ev_ref (EV_A);
1464	ev_io_stop (EV_A_ &pipeev);	1757	ev_io_stop (EV_A_ &pipe_w);
1465		1758
1466	#if EV_USE_EVENTFD	1759	#if EV_USE_EVENTFD
1467	if (evfd >= 0)	1760	if (evfd >= 0)
1468	close (evfd);	1761	close (evfd);
1469	#endif	1762	#endif
1470		1763
1471	if (evpipe [0] >= 0)	1764	if (evpipe [0] >= 0)
1472	{	1765	{
1473	close (evpipe [0]);	1766	EV_WIN32_CLOSE_FD (evpipe [0]);
1474	close (evpipe [1]);	1767	EV_WIN32_CLOSE_FD (evpipe [1]);
1475	}	1768	}
1476		1769
1477	evpipe_init (EV_A);	1770	evpipe_init (EV_A);
1478	/* now iterate over everything, in case we missed something */	1771	/* now iterate over everything, in case we missed something */
1479	pipecb (EV_A_ &pipeev, EV_READ);	1772	pipecb (EV_A_ &pipe_w, EV_READ);
1480	}	1773	}
1481		1774
1482	postfork = 0;	1775	postfork = 0;
1483	}	1776	}
1484		1777
1485	#if EV_MULTIPLICITY	1778	#if EV_MULTIPLICITY
1486		1779
1487	struct ev_loop *	1780	struct ev_loop *
1488	ev_loop_new (unsigned int flags)	1781	ev_loop_new (unsigned int flags)
1489	{	1782	{
1490	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1783	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1491		1784
1492	memset (loop, 0, sizeof (struct ev_loop));	1785	memset (EV_A, 0, sizeof (struct ev_loop));
1493
1494	loop_init (EV_A_ flags);	1786	loop_init (EV_A_ flags);
1495		1787
1496	if (ev_backend (EV_A))	1788	if (ev_backend (EV_A))
1497	return loop;	1789	return EV_A;
1498		1790
1499	return 0;	1791	return 0;
1500	}	1792	}
1501		1793
1502	void	1794	void
…		…
1509	void	1801	void
1510	ev_loop_fork (EV_P)	1802	ev_loop_fork (EV_P)
1511	{	1803	{
1512	postfork = 1; /* must be in line with ev_default_fork */	1804	postfork = 1; /* must be in line with ev_default_fork */
1513	}	1805	}
		1806	#endif /* multiplicity */
1514		1807
1515	#if EV_VERIFY	1808	#if EV_VERIFY
1516	static void noinline	1809	static void noinline
1517	verify_watcher (EV_P_ W w)	1810	verify_watcher (EV_P_ W w)
1518	{	1811	{
1519	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	1812	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1520		1813
1521	if (w->pending)	1814	if (w->pending)
1522	assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	1815	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1523	}	1816	}
1524		1817
1525	static void noinline	1818	static void noinline
1526	verify_heap (EV_P_ ANHE *heap, int N)	1819	verify_heap (EV_P_ ANHE *heap, int N)
1527	{	1820	{
1528	int i;	1821	int i;
1529		1822
1530	for (i = HEAP0; i < N + HEAP0; ++i)	1823	for (i = HEAP0; i < N + HEAP0; ++i)
1531	{	1824	{
1532	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));	1825	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1533	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));	1826	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1534	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));	1827	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1535		1828
1536	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	1829	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1537	}	1830	}
1538	}	1831	}
1539		1832
1540	static void noinline	1833	static void noinline
1541	array_verify (EV_P_ W *ws, int cnt)	1834	array_verify (EV_P_ W *ws, int cnt)
1542	{	1835	{
1543	while (cnt--)	1836	while (cnt--)
1544	{	1837	{
1545	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1838	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1546	verify_watcher (EV_A_ ws [cnt]);	1839	verify_watcher (EV_A_ ws [cnt]);
1547	}	1840	}
1548	}	1841	}
1549	#endif	1842	#endif
1550		1843
		1844	#if EV_MINIMAL < 2
1551	void	1845	void
1552	ev_loop_verify (EV_P)	1846	ev_loop_verify (EV_P)
1553	{	1847	{
1554	#if EV_VERIFY	1848	#if EV_VERIFY
1555	int i;	1849	int i;
…		…
1557		1851
1558	assert (activecnt >= -1);	1852	assert (activecnt >= -1);
1559		1853
1560	assert (fdchangemax >= fdchangecnt);	1854	assert (fdchangemax >= fdchangecnt);
1561	for (i = 0; i < fdchangecnt; ++i)	1855	for (i = 0; i < fdchangecnt; ++i)
1562	assert (("negative fd in fdchanges", fdchanges [i] >= 0));	1856	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1563		1857
1564	assert (anfdmax >= 0);	1858	assert (anfdmax >= 0);
1565	for (i = 0; i < anfdmax; ++i)	1859	for (i = 0; i < anfdmax; ++i)
1566	for (w = anfds [i].head; w; w = w->next)	1860	for (w = anfds [i].head; w; w = w->next)
1567	{	1861	{
1568	verify_watcher (EV_A_ (W)w);	1862	verify_watcher (EV_A_ (W)w);
1569	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));	1863	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1570	assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));	1864	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1571	}	1865	}
1572		1866
1573	assert (timermax >= timercnt);	1867	assert (timermax >= timercnt);
1574	verify_heap (EV_A_ timers, timercnt);	1868	verify_heap (EV_A_ timers, timercnt);
1575		1869
…		…
1604	assert (checkmax >= checkcnt);	1898	assert (checkmax >= checkcnt);
1605	array_verify (EV_A_ (W *)checks, checkcnt);	1899	array_verify (EV_A_ (W *)checks, checkcnt);
1606		1900
1607	# if 0	1901	# if 0
1608	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1902	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1609	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1903	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1610	# endif
1611	#endif	1904	# endif
		1905	#endif
1612	}	1906	}
1613		1907	#endif
1614	#endif /* multiplicity */
1615		1908
1616	#if EV_MULTIPLICITY	1909	#if EV_MULTIPLICITY
1617	struct ev_loop *	1910	struct ev_loop *
1618	ev_default_loop_init (unsigned int flags)	1911	ev_default_loop_init (unsigned int flags)
1619	#else	1912	#else
…		…
1622	#endif	1915	#endif
1623	{	1916	{
1624	if (!ev_default_loop_ptr)	1917	if (!ev_default_loop_ptr)
1625	{	1918	{
1626	#if EV_MULTIPLICITY	1919	#if EV_MULTIPLICITY
1627	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1920	EV_P = ev_default_loop_ptr = &default_loop_struct;
1628	#else	1921	#else
1629	ev_default_loop_ptr = 1;	1922	ev_default_loop_ptr = 1;
1630	#endif	1923	#endif
1631		1924
1632	loop_init (EV_A_ flags);	1925	loop_init (EV_A_ flags);
…		…
1649		1942
1650	void	1943	void
1651	ev_default_destroy (void)	1944	ev_default_destroy (void)
1652	{	1945	{
1653	#if EV_MULTIPLICITY	1946	#if EV_MULTIPLICITY
1654	struct ev_loop *loop = ev_default_loop_ptr;	1947	EV_P = ev_default_loop_ptr;
1655	#endif	1948	#endif
		1949
		1950	ev_default_loop_ptr = 0;
1656		1951
1657	#ifndef _WIN32	1952	#ifndef _WIN32
1658	ev_ref (EV_A); /* child watcher */	1953	ev_ref (EV_A); /* child watcher */
1659	ev_signal_stop (EV_A_ &childev);	1954	ev_signal_stop (EV_A_ &childev);
1660	#endif	1955	#endif
…		…
1664		1959
1665	void	1960	void
1666	ev_default_fork (void)	1961	ev_default_fork (void)
1667	{	1962	{
1668	#if EV_MULTIPLICITY	1963	#if EV_MULTIPLICITY
1669	struct ev_loop *loop = ev_default_loop_ptr;	1964	EV_P = ev_default_loop_ptr;
1670	#endif	1965	#endif
1671		1966
1672	if (backend)
1673	postfork = 1; /* must be in line with ev_loop_fork */	1967	postfork = 1; /* must be in line with ev_loop_fork */
1674	}	1968	}
1675		1969
1676	/*****************************************************************************/	1970	/*****************************************************************************/
1677		1971
1678	void	1972	void
1679	ev_invoke (EV_P_ void *w, int revents)	1973	ev_invoke (EV_P_ void *w, int revents)
1680	{	1974	{
1681	EV_CB_INVOKE ((W)w, revents);	1975	EV_CB_INVOKE ((W)w, revents);
1682	}	1976	}
1683		1977
1684	void inline_speed	1978	unsigned int
1685	call_pending (EV_P)	1979	ev_pending_count (EV_P)
		1980	{
		1981	int pri;
		1982	unsigned int count = 0;
		1983
		1984	for (pri = NUMPRI; pri--; )
		1985	count += pendingcnt [pri];
		1986
		1987	return count;
		1988	}
		1989
		1990	void noinline
		1991	ev_invoke_pending (EV_P)
1686	{	1992	{
1687	int pri;	1993	int pri;
1688		1994
1689	for (pri = NUMPRI; pri--; )	1995	for (pri = NUMPRI; pri--; )
1690	while (pendingcnt [pri])	1996	while (pendingcnt [pri])
1691	{	1997	{
1692	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1998	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1693		1999
1694	if (expect_true (p->w))
1695	{
1696	/*assert (("non-pending watcher on pending list", p->w->pending));*/	2000	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		2001	/* ^ this is no longer true, as pending_w could be here */
1697		2002
1698	p->w->pending = 0;	2003	p->w->pending = 0;
1699	EV_CB_INVOKE (p->w, p->events);	2004	EV_CB_INVOKE (p->w, p->events);
1700	EV_FREQUENT_CHECK;	2005	EV_FREQUENT_CHECK;
1701	}
1702	}	2006	}
1703	}	2007	}
1704		2008
1705	#if EV_IDLE_ENABLE	2009	#if EV_IDLE_ENABLE
1706	void inline_size	2010	/* make idle watchers pending. this handles the "call-idle */
		2011	/* only when higher priorities are idle" logic */
		2012	inline_size void
1707	idle_reify (EV_P)	2013	idle_reify (EV_P)
1708	{	2014	{
1709	if (expect_false (idleall))	2015	if (expect_false (idleall))
1710	{	2016	{
1711	int pri;	2017	int pri;
…		…
1723	}	2029	}
1724	}	2030	}
1725	}	2031	}
1726	#endif	2032	#endif
1727		2033
1728	void inline_size	2034	/* make timers pending */
		2035	inline_size void
1729	timers_reify (EV_P)	2036	timers_reify (EV_P)
1730	{	2037	{
1731	EV_FREQUENT_CHECK;	2038	EV_FREQUENT_CHECK;
1732		2039
1733	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	2040	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1734	{	2041	{
1735	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	2042	do
1736
1737	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1738
1739	/* first reschedule or stop timer */
1740	if (w->repeat)
1741	{	2043	{
		2044	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2045
		2046	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2047
		2048	/* first reschedule or stop timer */
		2049	if (w->repeat)
		2050	{
1742	ev_at (w) += w->repeat;	2051	ev_at (w) += w->repeat;
1743	if (ev_at (w) < mn_now)	2052	if (ev_at (w) < mn_now)
1744	ev_at (w) = mn_now;	2053	ev_at (w) = mn_now;
1745		2054
1746	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	2055	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1747		2056
1748	ANHE_at_cache (timers [HEAP0]);	2057	ANHE_at_cache (timers [HEAP0]);
1749	downheap (timers, timercnt, HEAP0);	2058	downheap (timers, timercnt, HEAP0);
		2059	}
		2060	else
		2061	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2062
		2063	EV_FREQUENT_CHECK;
		2064	feed_reverse (EV_A_ (W)w);
1750	}	2065	}
1751	else	2066	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1752	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1753		2067
1754	EV_FREQUENT_CHECK;
1755	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	2068	feed_reverse_done (EV_A_ EV_TIMEOUT);
1756	}	2069	}
1757	}	2070	}
1758		2071
1759	#if EV_PERIODIC_ENABLE	2072	#if EV_PERIODIC_ENABLE
1760	void inline_size	2073	/* make periodics pending */
		2074	inline_size void
1761	periodics_reify (EV_P)	2075	periodics_reify (EV_P)
1762	{	2076	{
1763	EV_FREQUENT_CHECK;	2077	EV_FREQUENT_CHECK;
1764		2078
1765	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	2079	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1766	{	2080	{
1767	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	2081	int feed_count = 0;
1768		2082
1769	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	2083	do
1770
1771	/* first reschedule or stop timer */
1772	if (w->reschedule_cb)
1773	{	2084	{
		2085	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2086
		2087	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2088
		2089	/* first reschedule or stop timer */
		2090	if (w->reschedule_cb)
		2091	{
1774	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2092	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1775		2093
1776	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	2094	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1777		2095
1778	ANHE_at_cache (periodics [HEAP0]);	2096	ANHE_at_cache (periodics [HEAP0]);
1779	downheap (periodics, periodiccnt, HEAP0);	2097	downheap (periodics, periodiccnt, HEAP0);
		2098	}
		2099	else if (w->interval)
		2100	{
		2101	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2102	/* if next trigger time is not sufficiently in the future, put it there */
		2103	/* this might happen because of floating point inexactness */
		2104	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2105	{
		2106	ev_at (w) += w->interval;
		2107
		2108	/* if interval is unreasonably low we might still have a time in the past */
		2109	/* so correct this. this will make the periodic very inexact, but the user */
		2110	/* has effectively asked to get triggered more often than possible */
		2111	if (ev_at (w) < ev_rt_now)
		2112	ev_at (w) = ev_rt_now;
		2113	}
		2114
		2115	ANHE_at_cache (periodics [HEAP0]);
		2116	downheap (periodics, periodiccnt, HEAP0);
		2117	}
		2118	else
		2119	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2120
		2121	EV_FREQUENT_CHECK;
		2122	feed_reverse (EV_A_ (W)w);
1780	}	2123	}
1781	else if (w->interval)	2124	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1782	{
1783	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1784	/* if next trigger time is not sufficiently in the future, put it there */
1785	/* this might happen because of floating point inexactness */
1786	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1787	{
1788	ev_at (w) += w->interval;
1789		2125
1790	/* if interval is unreasonably low we might still have a time in the past */
1791	/* so correct this. this will make the periodic very inexact, but the user */
1792	/* has effectively asked to get triggered more often than possible */
1793	if (ev_at (w) < ev_rt_now)
1794	ev_at (w) = ev_rt_now;
1795	}
1796
1797	ANHE_at_cache (periodics [HEAP0]);
1798	downheap (periodics, periodiccnt, HEAP0);
1799	}
1800	else
1801	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1802
1803	EV_FREQUENT_CHECK;
1804	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	2126	feed_reverse_done (EV_A_ EV_PERIODIC);
1805	}	2127	}
1806	}	2128	}
1807		2129
		2130	/* simply recalculate all periodics */
		2131	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1808	static void noinline	2132	static void noinline
1809	periodics_reschedule (EV_P)	2133	periodics_reschedule (EV_P)
1810	{	2134	{
1811	int i;	2135	int i;
1812		2136
…		…
1825		2149
1826	reheap (periodics, periodiccnt);	2150	reheap (periodics, periodiccnt);
1827	}	2151	}
1828	#endif	2152	#endif
1829		2153
1830	void inline_speed	2154	/* adjust all timers by a given offset */
		2155	static void noinline
		2156	timers_reschedule (EV_P_ ev_tstamp adjust)
		2157	{
		2158	int i;
		2159
		2160	for (i = 0; i < timercnt; ++i)
		2161	{
		2162	ANHE *he = timers + i + HEAP0;
		2163	ANHE_w (*he)->at += adjust;
		2164	ANHE_at_cache (*he);
		2165	}
		2166	}
		2167
		2168	/* fetch new monotonic and realtime times from the kernel */
		2169	/* also detect if there was a timejump, and act accordingly */
		2170	inline_speed void
1831	time_update (EV_P_ ev_tstamp max_block)	2171	time_update (EV_P_ ev_tstamp max_block)
1832	{	2172	{
1833	int i;
1834
1835	#if EV_USE_MONOTONIC	2173	#if EV_USE_MONOTONIC
1836	if (expect_true (have_monotonic))	2174	if (expect_true (have_monotonic))
1837	{	2175	{
		2176	int i;
1838	ev_tstamp odiff = rtmn_diff;	2177	ev_tstamp odiff = rtmn_diff;
1839		2178
1840	mn_now = get_clock ();	2179	mn_now = get_clock ();
1841		2180
1842	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2181	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1868	ev_rt_now = ev_time ();	2207	ev_rt_now = ev_time ();
1869	mn_now = get_clock ();	2208	mn_now = get_clock ();
1870	now_floor = mn_now;	2209	now_floor = mn_now;
1871	}	2210	}
1872		2211
		2212	/* no timer adjustment, as the monotonic clock doesn't jump */
		2213	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1873	# if EV_PERIODIC_ENABLE	2214	# if EV_PERIODIC_ENABLE
1874	periodics_reschedule (EV_A);	2215	periodics_reschedule (EV_A);
1875	# endif	2216	# endif
1876	/* no timer adjustment, as the monotonic clock doesn't jump */
1877	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1878	}	2217	}
1879	else	2218	else
1880	#endif	2219	#endif
1881	{	2220	{
1882	ev_rt_now = ev_time ();	2221	ev_rt_now = ev_time ();
1883		2222
1884	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2223	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1885	{	2224	{
		2225	/* adjust timers. this is easy, as the offset is the same for all of them */
		2226	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1886	#if EV_PERIODIC_ENABLE	2227	#if EV_PERIODIC_ENABLE
1887	periodics_reschedule (EV_A);	2228	periodics_reschedule (EV_A);
1888	#endif	2229	#endif
1889	/* adjust timers. this is easy, as the offset is the same for all of them */
1890	for (i = 0; i < timercnt; ++i)
1891	{
1892	ANHE *he = timers + i + HEAP0;
1893	ANHE_w (*he)->at += ev_rt_now - mn_now;
1894	ANHE_at_cache (*he);
1895	}
1896	}	2230	}
1897		2231
1898	mn_now = ev_rt_now;	2232	mn_now = ev_rt_now;
1899	}	2233	}
1900	}	2234	}
1901		2235
1902	void	2236	void
1903	ev_ref (EV_P)
1904	{
1905	++activecnt;
1906	}
1907
1908	void
1909	ev_unref (EV_P)
1910	{
1911	--activecnt;
1912	}
1913
1914	void
1915	ev_now_update (EV_P)
1916	{
1917	time_update (EV_A_ 1e100);
1918	}
1919
1920	static int loop_done;
1921
1922	void
1923	ev_loop (EV_P_ int flags)	2237	ev_loop (EV_P_ int flags)
1924	{	2238	{
		2239	#if EV_MINIMAL < 2
		2240	++loop_depth;
		2241	#endif
		2242
		2243	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2244
1925	loop_done = EVUNLOOP_CANCEL;	2245	loop_done = EVUNLOOP_CANCEL;
1926		2246
1927	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2247	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1928		2248
1929	do	2249	do
1930	{	2250	{
1931	#if EV_VERIFY >= 2	2251	#if EV_VERIFY >= 2
1932	ev_loop_verify (EV_A);	2252	ev_loop_verify (EV_A);
…		…
1945	/* we might have forked, so queue fork handlers */	2265	/* we might have forked, so queue fork handlers */
1946	if (expect_false (postfork))	2266	if (expect_false (postfork))
1947	if (forkcnt)	2267	if (forkcnt)
1948	{	2268	{
1949	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2269	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1950	call_pending (EV_A);	2270	EV_INVOKE_PENDING;
1951	}	2271	}
1952	#endif	2272	#endif
1953		2273
1954	/* queue prepare watchers (and execute them) */	2274	/* queue prepare watchers (and execute them) */
1955	if (expect_false (preparecnt))	2275	if (expect_false (preparecnt))
1956	{	2276	{
1957	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2277	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1958	call_pending (EV_A);	2278	EV_INVOKE_PENDING;
1959	}	2279	}
1960		2280
1961	if (expect_false (!activecnt))	2281	if (expect_false (loop_done))
1962	break;	2282	break;
1963		2283
1964	/* we might have forked, so reify kernel state if necessary */	2284	/* we might have forked, so reify kernel state if necessary */
1965	if (expect_false (postfork))	2285	if (expect_false (postfork))
1966	loop_fork (EV_A);	2286	loop_fork (EV_A);
…		…
1973	ev_tstamp waittime = 0.;	2293	ev_tstamp waittime = 0.;
1974	ev_tstamp sleeptime = 0.;	2294	ev_tstamp sleeptime = 0.;
1975		2295
1976	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2296	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1977	{	2297	{
		2298	/* remember old timestamp for io_blocktime calculation */
		2299	ev_tstamp prev_mn_now = mn_now;
		2300
1978	/* update time to cancel out callback processing overhead */	2301	/* update time to cancel out callback processing overhead */
1979	time_update (EV_A_ 1e100);	2302	time_update (EV_A_ 1e100);
1980		2303
1981	waittime = MAX_BLOCKTIME;	2304	waittime = MAX_BLOCKTIME;
1982		2305
…		…
1992	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2315	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1993	if (waittime > to) waittime = to;	2316	if (waittime > to) waittime = to;
1994	}	2317	}
1995	#endif	2318	#endif
1996		2319
		2320	/* don't let timeouts decrease the waittime below timeout_blocktime */
1997	if (expect_false (waittime < timeout_blocktime))	2321	if (expect_false (waittime < timeout_blocktime))
1998	waittime = timeout_blocktime;	2322	waittime = timeout_blocktime;
1999		2323
2000	sleeptime = waittime - backend_fudge;	2324	/* extra check because io_blocktime is commonly 0 */
2001
2002	if (expect_true (sleeptime > io_blocktime))	2325	if (expect_false (io_blocktime))
2003	sleeptime = io_blocktime;
2004
2005	if (sleeptime)
2006	{	2326	{
		2327	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2328
		2329	if (sleeptime > waittime - backend_fudge)
		2330	sleeptime = waittime - backend_fudge;
		2331
		2332	if (expect_true (sleeptime > 0.))
		2333	{
2007	ev_sleep (sleeptime);	2334	ev_sleep (sleeptime);
2008	waittime -= sleeptime;	2335	waittime -= sleeptime;
		2336	}
2009	}	2337	}
2010	}	2338	}
2011		2339
		2340	#if EV_MINIMAL < 2
2012	++loop_count;	2341	++loop_count;
		2342	#endif
		2343	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2013	backend_poll (EV_A_ waittime);	2344	backend_poll (EV_A_ waittime);
		2345	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2014		2346
2015	/* update ev_rt_now, do magic */	2347	/* update ev_rt_now, do magic */
2016	time_update (EV_A_ waittime + sleeptime);	2348	time_update (EV_A_ waittime + sleeptime);
2017	}	2349	}
2018		2350
…		…
2029		2361
2030	/* queue check watchers, to be executed first */	2362	/* queue check watchers, to be executed first */
2031	if (expect_false (checkcnt))	2363	if (expect_false (checkcnt))
2032	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2364	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2033		2365
2034	call_pending (EV_A);	2366	EV_INVOKE_PENDING;
2035	}	2367	}
2036	while (expect_true (	2368	while (expect_true (
2037	activecnt	2369	activecnt
2038	&& !loop_done	2370	&& !loop_done
2039	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2371	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2040	));	2372	));
2041		2373
2042	if (loop_done == EVUNLOOP_ONE)	2374	if (loop_done == EVUNLOOP_ONE)
2043	loop_done = EVUNLOOP_CANCEL;	2375	loop_done = EVUNLOOP_CANCEL;
		2376
		2377	#if EV_MINIMAL < 2
		2378	--loop_depth;
		2379	#endif
2044	}	2380	}
2045		2381
2046	void	2382	void
2047	ev_unloop (EV_P_ int how)	2383	ev_unloop (EV_P_ int how)
2048	{	2384	{
2049	loop_done = how;	2385	loop_done = how;
2050	}	2386	}
2051		2387
		2388	void
		2389	ev_ref (EV_P)
		2390	{
		2391	++activecnt;
		2392	}
		2393
		2394	void
		2395	ev_unref (EV_P)
		2396	{
		2397	--activecnt;
		2398	}
		2399
		2400	void
		2401	ev_now_update (EV_P)
		2402	{
		2403	time_update (EV_A_ 1e100);
		2404	}
		2405
		2406	void
		2407	ev_suspend (EV_P)
		2408	{
		2409	ev_now_update (EV_A);
		2410	}
		2411
		2412	void
		2413	ev_resume (EV_P)
		2414	{
		2415	ev_tstamp mn_prev = mn_now;
		2416
		2417	ev_now_update (EV_A);
		2418	timers_reschedule (EV_A_ mn_now - mn_prev);
		2419	#if EV_PERIODIC_ENABLE
		2420	/* TODO: really do this? */
		2421	periodics_reschedule (EV_A);
		2422	#endif
		2423	}
		2424
2052	/*****************************************************************************/	2425	/*****************************************************************************/
		2426	/* singly-linked list management, used when the expected list length is short */
2053		2427
2054	void inline_size	2428	inline_size void
2055	wlist_add (WL *head, WL elem)	2429	wlist_add (WL *head, WL elem)
2056	{	2430	{
2057	elem->next = *head;	2431	elem->next = *head;
2058	*head = elem;	2432	*head = elem;
2059	}	2433	}
2060		2434
2061	void inline_size	2435	inline_size void
2062	wlist_del (WL *head, WL elem)	2436	wlist_del (WL *head, WL elem)
2063	{	2437	{
2064	while (*head)	2438	while (*head)
2065	{	2439	{
2066	if (*head == elem)	2440	if (expect_true (*head == elem))
2067	{	2441	{
2068	*head = elem->next;	2442	*head = elem->next;
2069	return;	2443	break;
2070	}	2444	}
2071		2445
2072	head = &(*head)->next;	2446	head = &(*head)->next;
2073	}	2447	}
2074	}	2448	}
2075		2449
2076	void inline_speed	2450	/* internal, faster, version of ev_clear_pending */
		2451	inline_speed void
2077	clear_pending (EV_P_ W w)	2452	clear_pending (EV_P_ W w)
2078	{	2453	{
2079	if (w->pending)	2454	if (w->pending)
2080	{	2455	{
2081	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2456	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2082	w->pending = 0;	2457	w->pending = 0;
2083	}	2458	}
2084	}	2459	}
2085		2460
2086	int	2461	int
…		…
2090	int pending = w_->pending;	2465	int pending = w_->pending;
2091		2466
2092	if (expect_true (pending))	2467	if (expect_true (pending))
2093	{	2468	{
2094	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2469	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2470	p->w = (W)&pending_w;
2095	w_->pending = 0;	2471	w_->pending = 0;
2096	p->w = 0;
2097	return p->events;	2472	return p->events;
2098	}	2473	}
2099	else	2474	else
2100	return 0;	2475	return 0;
2101	}	2476	}
2102		2477
2103	void inline_size	2478	inline_size void
2104	pri_adjust (EV_P_ W w)	2479	pri_adjust (EV_P_ W w)
2105	{	2480	{
2106	int pri = w->priority;	2481	int pri = ev_priority (w);
2107	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2482	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2108	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2483	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2109	w->priority = pri;	2484	ev_set_priority (w, pri);
2110	}	2485	}
2111		2486
2112	void inline_speed	2487	inline_speed void
2113	ev_start (EV_P_ W w, int active)	2488	ev_start (EV_P_ W w, int active)
2114	{	2489	{
2115	pri_adjust (EV_A_ w);	2490	pri_adjust (EV_A_ w);
2116	w->active = active;	2491	w->active = active;
2117	ev_ref (EV_A);	2492	ev_ref (EV_A);
2118	}	2493	}
2119		2494
2120	void inline_size	2495	inline_size void
2121	ev_stop (EV_P_ W w)	2496	ev_stop (EV_P_ W w)
2122	{	2497	{
2123	ev_unref (EV_A);	2498	ev_unref (EV_A);
2124	w->active = 0;	2499	w->active = 0;
2125	}	2500	}
…		…
2132	int fd = w->fd;	2507	int fd = w->fd;
2133		2508
2134	if (expect_false (ev_is_active (w)))	2509	if (expect_false (ev_is_active (w)))
2135	return;	2510	return;
2136		2511
2137	assert (("ev_io_start called with negative fd", fd >= 0));	2512	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2513	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2138		2514
2139	EV_FREQUENT_CHECK;	2515	EV_FREQUENT_CHECK;
2140		2516
2141	ev_start (EV_A_ (W)w, 1);	2517	ev_start (EV_A_ (W)w, 1);
2142	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2518	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2143	wlist_add (&anfds[fd].head, (WL)w);	2519	wlist_add (&anfds[fd].head, (WL)w);
2144		2520
2145	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2521	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2146	w->events &= ~EV_IOFDSET;	2522	w->events &= ~EV__IOFDSET;
2147		2523
2148	EV_FREQUENT_CHECK;	2524	EV_FREQUENT_CHECK;
2149	}	2525	}
2150		2526
2151	void noinline	2527	void noinline
…		…
2153	{	2529	{
2154	clear_pending (EV_A_ (W)w);	2530	clear_pending (EV_A_ (W)w);
2155	if (expect_false (!ev_is_active (w)))	2531	if (expect_false (!ev_is_active (w)))
2156	return;	2532	return;
2157		2533
2158	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2534	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2159		2535
2160	EV_FREQUENT_CHECK;	2536	EV_FREQUENT_CHECK;
2161		2537
2162	wlist_del (&anfds[w->fd].head, (WL)w);	2538	wlist_del (&anfds[w->fd].head, (WL)w);
2163	ev_stop (EV_A_ (W)w);	2539	ev_stop (EV_A_ (W)w);
…		…
2173	if (expect_false (ev_is_active (w)))	2549	if (expect_false (ev_is_active (w)))
2174	return;	2550	return;
2175		2551
2176	ev_at (w) += mn_now;	2552	ev_at (w) += mn_now;
2177		2553
2178	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2554	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2179		2555
2180	EV_FREQUENT_CHECK;	2556	EV_FREQUENT_CHECK;
2181		2557
2182	++timercnt;	2558	++timercnt;
2183	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2559	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2186	ANHE_at_cache (timers [ev_active (w)]);	2562	ANHE_at_cache (timers [ev_active (w)]);
2187	upheap (timers, ev_active (w));	2563	upheap (timers, ev_active (w));
2188		2564
2189	EV_FREQUENT_CHECK;	2565	EV_FREQUENT_CHECK;
2190		2566
2191	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2567	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2192	}	2568	}
2193		2569
2194	void noinline	2570	void noinline
2195	ev_timer_stop (EV_P_ ev_timer *w)	2571	ev_timer_stop (EV_P_ ev_timer *w)
2196	{	2572	{
…		…
2201	EV_FREQUENT_CHECK;	2577	EV_FREQUENT_CHECK;
2202		2578
2203	{	2579	{
2204	int active = ev_active (w);	2580	int active = ev_active (w);
2205		2581
2206	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2582	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2207		2583
2208	--timercnt;	2584	--timercnt;
2209		2585
2210	if (expect_true (active < timercnt + HEAP0))	2586	if (expect_true (active < timercnt + HEAP0))
2211	{	2587	{
2212	timers [active] = timers [timercnt + HEAP0];	2588	timers [active] = timers [timercnt + HEAP0];
2213	adjustheap (timers, timercnt, active);	2589	adjustheap (timers, timercnt, active);
2214	}	2590	}
2215	}	2591	}
2216		2592
2217	EV_FREQUENT_CHECK;
2218
2219	ev_at (w) -= mn_now;	2593	ev_at (w) -= mn_now;
2220		2594
2221	ev_stop (EV_A_ (W)w);	2595	ev_stop (EV_A_ (W)w);
		2596
		2597	EV_FREQUENT_CHECK;
2222	}	2598	}
2223		2599
2224	void noinline	2600	void noinline
2225	ev_timer_again (EV_P_ ev_timer *w)	2601	ev_timer_again (EV_P_ ev_timer *w)
2226	{	2602	{
…		…
2244	}	2620	}
2245		2621
2246	EV_FREQUENT_CHECK;	2622	EV_FREQUENT_CHECK;
2247	}	2623	}
2248		2624
		2625	ev_tstamp
		2626	ev_timer_remaining (EV_P_ ev_timer *w)
		2627	{
		2628	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2629	}
		2630
2249	#if EV_PERIODIC_ENABLE	2631	#if EV_PERIODIC_ENABLE
2250	void noinline	2632	void noinline
2251	ev_periodic_start (EV_P_ ev_periodic *w)	2633	ev_periodic_start (EV_P_ ev_periodic *w)
2252	{	2634	{
2253	if (expect_false (ev_is_active (w)))	2635	if (expect_false (ev_is_active (w)))
…		…
2255		2637
2256	if (w->reschedule_cb)	2638	if (w->reschedule_cb)
2257	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2639	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2258	else if (w->interval)	2640	else if (w->interval)
2259	{	2641	{
2260	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2642	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2261	/* this formula differs from the one in periodic_reify because we do not always round up */	2643	/* this formula differs from the one in periodic_reify because we do not always round up */
2262	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2644	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2263	}	2645	}
2264	else	2646	else
2265	ev_at (w) = w->offset;	2647	ev_at (w) = w->offset;
…		…
2273	ANHE_at_cache (periodics [ev_active (w)]);	2655	ANHE_at_cache (periodics [ev_active (w)]);
2274	upheap (periodics, ev_active (w));	2656	upheap (periodics, ev_active (w));
2275		2657
2276	EV_FREQUENT_CHECK;	2658	EV_FREQUENT_CHECK;
2277		2659
2278	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2660	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2279	}	2661	}
2280		2662
2281	void noinline	2663	void noinline
2282	ev_periodic_stop (EV_P_ ev_periodic *w)	2664	ev_periodic_stop (EV_P_ ev_periodic *w)
2283	{	2665	{
…		…
2288	EV_FREQUENT_CHECK;	2670	EV_FREQUENT_CHECK;
2289		2671
2290	{	2672	{
2291	int active = ev_active (w);	2673	int active = ev_active (w);
2292		2674
2293	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2675	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2294		2676
2295	--periodiccnt;	2677	--periodiccnt;
2296		2678
2297	if (expect_true (active < periodiccnt + HEAP0))	2679	if (expect_true (active < periodiccnt + HEAP0))
2298	{	2680	{
2299	periodics [active] = periodics [periodiccnt + HEAP0];	2681	periodics [active] = periodics [periodiccnt + HEAP0];
2300	adjustheap (periodics, periodiccnt, active);	2682	adjustheap (periodics, periodiccnt, active);
2301	}	2683	}
2302	}	2684	}
2303		2685
2304	EV_FREQUENT_CHECK;
2305
2306	ev_stop (EV_A_ (W)w);	2686	ev_stop (EV_A_ (W)w);
		2687
		2688	EV_FREQUENT_CHECK;
2307	}	2689	}
2308		2690
2309	void noinline	2691	void noinline
2310	ev_periodic_again (EV_P_ ev_periodic *w)	2692	ev_periodic_again (EV_P_ ev_periodic *w)
2311	{	2693	{
…		…
2320	#endif	2702	#endif
2321		2703
2322	void noinline	2704	void noinline
2323	ev_signal_start (EV_P_ ev_signal *w)	2705	ev_signal_start (EV_P_ ev_signal *w)
2324	{	2706	{
2325	#if EV_MULTIPLICITY
2326	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2327	#endif
2328	if (expect_false (ev_is_active (w)))	2707	if (expect_false (ev_is_active (w)))
2329	return;	2708	return;
2330		2709
2331	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2710	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2332		2711
2333	evpipe_init (EV_A);	2712	#if EV_MULTIPLICITY
		2713	assert (("libev: a signal must not be attached to two different loops",
		2714	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2334		2715
2335	EV_FREQUENT_CHECK;	2716	signals [w->signum - 1].loop = EV_A;
		2717	#endif
2336		2718
		2719	EV_FREQUENT_CHECK;
		2720
		2721	#if EV_USE_SIGNALFD
		2722	if (sigfd == -2)
2337	{	2723	{
2338	#ifndef _WIN32	2724	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2339	sigset_t full, prev;	2725	if (sigfd < 0 && errno == EINVAL)
2340	sigfillset (&full);	2726	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2341	sigprocmask (SIG_SETMASK, &full, &prev);
2342	#endif
2343		2727
2344	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2728	if (sigfd >= 0)
		2729	{
		2730	fd_intern (sigfd); /* doing it twice will not hurt */
2345		2731
2346	#ifndef _WIN32	2732	sigemptyset (&sigfd_set);
2347	sigprocmask (SIG_SETMASK, &prev, 0);	2733
2348	#endif	2734	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2735	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2736	ev_io_start (EV_A_ &sigfd_w);
		2737	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2738	}
2349	}	2739	}
		2740
		2741	if (sigfd >= 0)
		2742	{
		2743	/* TODO: check .head */
		2744	sigaddset (&sigfd_set, w->signum);
		2745	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2746
		2747	signalfd (sigfd, &sigfd_set, 0);
		2748	}
		2749	#endif
2350		2750
2351	ev_start (EV_A_ (W)w, 1);	2751	ev_start (EV_A_ (W)w, 1);
2352	wlist_add (&signals [w->signum - 1].head, (WL)w);	2752	wlist_add (&signals [w->signum - 1].head, (WL)w);
2353		2753
2354	if (!((WL)w)->next)	2754	if (!((WL)w)->next)
		2755	# if EV_USE_SIGNALFD
		2756	if (sigfd < 0) /*TODO*/
		2757	# endif
2355	{	2758	{
2356	#if _WIN32	2759	# ifdef _WIN32
		2760	evpipe_init (EV_A);
		2761
2357	signal (w->signum, ev_sighandler);	2762	signal (w->signum, ev_sighandler);
2358	#else	2763	# else
2359	struct sigaction sa;	2764	struct sigaction sa;
		2765
		2766	evpipe_init (EV_A);
		2767
2360	sa.sa_handler = ev_sighandler;	2768	sa.sa_handler = ev_sighandler;
2361	sigfillset (&sa.sa_mask);	2769	sigfillset (&sa.sa_mask);
2362	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2770	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2363	sigaction (w->signum, &sa, 0);	2771	sigaction (w->signum, &sa, 0);
		2772
		2773	sigemptyset (&sa.sa_mask);
		2774	sigaddset (&sa.sa_mask, w->signum);
		2775	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2364	#endif	2776	#endif
2365	}	2777	}
2366		2778
2367	EV_FREQUENT_CHECK;	2779	EV_FREQUENT_CHECK;
2368	}	2780	}
2369		2781
2370	void noinline	2782	void noinline
…		…
2378		2790
2379	wlist_del (&signals [w->signum - 1].head, (WL)w);	2791	wlist_del (&signals [w->signum - 1].head, (WL)w);
2380	ev_stop (EV_A_ (W)w);	2792	ev_stop (EV_A_ (W)w);
2381		2793
2382	if (!signals [w->signum - 1].head)	2794	if (!signals [w->signum - 1].head)
		2795	{
		2796	#if EV_MULTIPLICITY
		2797	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2798	#endif
		2799	#if EV_USE_SIGNALFD
		2800	if (sigfd >= 0)
		2801	{
		2802	sigset_t ss;
		2803
		2804	sigemptyset (&ss);
		2805	sigaddset (&ss, w->signum);
		2806	sigdelset (&sigfd_set, w->signum);
		2807
		2808	signalfd (sigfd, &sigfd_set, 0);
		2809	sigprocmask (SIG_UNBLOCK, &ss, 0);
		2810	}
		2811	else
		2812	#endif
2383	signal (w->signum, SIG_DFL);	2813	signal (w->signum, SIG_DFL);
		2814	}
2384		2815
2385	EV_FREQUENT_CHECK;	2816	EV_FREQUENT_CHECK;
2386	}	2817	}
2387		2818
2388	void	2819	void
2389	ev_child_start (EV_P_ ev_child *w)	2820	ev_child_start (EV_P_ ev_child *w)
2390	{	2821	{
2391	#if EV_MULTIPLICITY	2822	#if EV_MULTIPLICITY
2392	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2823	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2393	#endif	2824	#endif
2394	if (expect_false (ev_is_active (w)))	2825	if (expect_false (ev_is_active (w)))
2395	return;	2826	return;
2396		2827
2397	EV_FREQUENT_CHECK;	2828	EV_FREQUENT_CHECK;
…		…
2422	# ifdef _WIN32	2853	# ifdef _WIN32
2423	# undef lstat	2854	# undef lstat
2424	# define lstat(a,b) _stati64 (a,b)	2855	# define lstat(a,b) _stati64 (a,b)
2425	# endif	2856	# endif
2426		2857
2427	#define DEF_STAT_INTERVAL 5.0074891	2858	#define DEF_STAT_INTERVAL 5.0074891
		2859	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2428	#define MIN_STAT_INTERVAL 0.1074891	2860	#define MIN_STAT_INTERVAL 0.1074891
2429		2861
2430	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2862	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2431		2863
2432	#if EV_USE_INOTIFY	2864	#if EV_USE_INOTIFY
2433	# define EV_INOTIFY_BUFSIZE 8192	2865
		2866	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		2867	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2434		2868
2435	static void noinline	2869	static void noinline
2436	infy_add (EV_P_ ev_stat *w)	2870	infy_add (EV_P_ ev_stat *w)
2437	{	2871	{
2438	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);	2872	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);
2439		2873
2440	if (w->wd < 0)	2874	if (w->wd >= 0)
		2875	{
		2876	struct statfs sfs;
		2877
		2878	/* now local changes will be tracked by inotify, but remote changes won't */
		2879	/* unless the filesystem is known to be local, we therefore still poll */
		2880	/* also do poll on <2.6.25, but with normal frequency */
		2881
		2882	if (!fs_2625)
		2883	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2884	else if (!statfs (w->path, &sfs)
		2885	&& (sfs.f_type == 0x1373 /* devfs */
		2886	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2887	|| sfs.f_type == 0x3153464a /* jfs */
		2888	|| sfs.f_type == 0x52654973 /* reiser3 */
		2889	|| sfs.f_type == 0x01021994 /* tempfs */
		2890	|| sfs.f_type == 0x58465342 /* xfs */))
		2891	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2892	else
		2893	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2441	{	2894	}
2442	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2895	else
		2896	{
		2897	/* can't use inotify, continue to stat */
		2898	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2443		2899
2444	/* monitor some parent directory for speedup hints */	2900	/* if path is not there, monitor some parent directory for speedup hints */
2445	/* note that exceeding the hardcoded limit is not a correctness issue, */	2901	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2446	/* but an efficiency issue only */	2902	/* but an efficiency issue only */
2447	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2903	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2448	{	2904	{
2449	char path [4096];	2905	char path [4096];
2450	strcpy (path, w->path);	2906	strcpy (path, w->path);
…		…
2454	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2910	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2455	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2911	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2456		2912
2457	char *pend = strrchr (path, '/');	2913	char *pend = strrchr (path, '/');
2458		2914
2459	if (!pend)	2915	if (!pend || pend == path)
2460	break; /* whoops, no '/', complain to your admin */	2916	break;
2461		2917
2462	*pend = 0;	2918	*pend = 0;
2463	w->wd = inotify_add_watch (fs_fd, path, mask);	2919	w->wd = inotify_add_watch (fs_fd, path, mask);
2464	}	2920	}
2465	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2921	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2466	}	2922	}
2467	}	2923	}
2468	else
2469	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2470		2924
2471	if (w->wd >= 0)	2925	if (w->wd >= 0)
2472	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2926	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2927
		2928	/* now re-arm timer, if required */
		2929	if (ev_is_active (&w->timer)) ev_ref (EV_A);
		2930	ev_timer_again (EV_A_ &w->timer);
		2931	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2473	}	2932	}
2474		2933
2475	static void noinline	2934	static void noinline
2476	infy_del (EV_P_ ev_stat *w)	2935	infy_del (EV_P_ ev_stat *w)
2477	{	2936	{
…		…
2491		2950
2492	static void noinline	2951	static void noinline
2493	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2952	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2494	{	2953	{
2495	if (slot < 0)	2954	if (slot < 0)
2496	/* overflow, need to check for all hahs slots */	2955	/* overflow, need to check for all hash slots */
2497	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2956	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2498	infy_wd (EV_A_ slot, wd, ev);	2957	infy_wd (EV_A_ slot, wd, ev);
2499	else	2958	else
2500	{	2959	{
2501	WL w_;	2960	WL w_;
…		…
2507		2966
2508	if (w->wd == wd || wd == -1)	2967	if (w->wd == wd || wd == -1)
2509	{	2968	{
2510	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2969	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2511	{	2970	{
		2971	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2512	w->wd = -1;	2972	w->wd = -1;
2513	infy_add (EV_A_ w); /* re-add, no matter what */	2973	infy_add (EV_A_ w); /* re-add, no matter what */
2514	}	2974	}
2515		2975
2516	stat_timer_cb (EV_A_ &w->timer, 0);	2976	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2521		2981
2522	static void	2982	static void
2523	infy_cb (EV_P_ ev_io *w, int revents)	2983	infy_cb (EV_P_ ev_io *w, int revents)
2524	{	2984	{
2525	char buf [EV_INOTIFY_BUFSIZE];	2985	char buf [EV_INOTIFY_BUFSIZE];
2526	struct inotify_event *ev = (struct inotify_event *)buf;
2527	int ofs;	2986	int ofs;
2528	int len = read (fs_fd, buf, sizeof (buf));	2987	int len = read (fs_fd, buf, sizeof (buf));
2529		2988
2530	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2989	for (ofs = 0; ofs < len; )
		2990	{
		2991	struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2531	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2992	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2993	ofs += sizeof (struct inotify_event) + ev->len;
		2994	}
2532	}	2995	}
2533		2996
2534	void inline_size	2997	inline_size void
		2998	check_2625 (EV_P)
		2999	{
		3000	/* kernels < 2.6.25 are borked
		3001	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		3002	*/
		3003	struct utsname buf;
		3004	int major, minor, micro;
		3005
		3006	if (uname (&buf))
		3007	return;
		3008
		3009	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		3010	return;
		3011
		3012	if (major < 2
		3013	|| (major == 2 && minor < 6)
		3014	|| (major == 2 && minor == 6 && micro < 25))
		3015	return;
		3016
		3017	fs_2625 = 1;
		3018	}
		3019
		3020	inline_size int
		3021	infy_newfd (void)
		3022	{
		3023	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3024	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3025	if (fd >= 0)
		3026	return fd;
		3027	#endif
		3028	return inotify_init ();
		3029	}
		3030
		3031	inline_size void
2535	infy_init (EV_P)	3032	infy_init (EV_P)
2536	{	3033	{
2537	if (fs_fd != -2)	3034	if (fs_fd != -2)
2538	return;	3035	return;
2539		3036
		3037	fs_fd = -1;
		3038
		3039	check_2625 (EV_A);
		3040
2540	fs_fd = inotify_init ();	3041	fs_fd = infy_newfd ();
2541		3042
2542	if (fs_fd >= 0)	3043	if (fs_fd >= 0)
2543	{	3044	{
		3045	fd_intern (fs_fd);
2544	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3046	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2545	ev_set_priority (&fs_w, EV_MAXPRI);	3047	ev_set_priority (&fs_w, EV_MAXPRI);
2546	ev_io_start (EV_A_ &fs_w);	3048	ev_io_start (EV_A_ &fs_w);
		3049	ev_unref (EV_A);
2547	}	3050	}
2548	}	3051	}
2549		3052
2550	void inline_size	3053	inline_size void
2551	infy_fork (EV_P)	3054	infy_fork (EV_P)
2552	{	3055	{
2553	int slot;	3056	int slot;
2554		3057
2555	if (fs_fd < 0)	3058	if (fs_fd < 0)
2556	return;	3059	return;
2557		3060
		3061	ev_ref (EV_A);
		3062	ev_io_stop (EV_A_ &fs_w);
2558	close (fs_fd);	3063	close (fs_fd);
2559	fs_fd = inotify_init ();	3064	fs_fd = infy_newfd ();
		3065
		3066	if (fs_fd >= 0)
		3067	{
		3068	fd_intern (fs_fd);
		3069	ev_io_set (&fs_w, fs_fd, EV_READ);
		3070	ev_io_start (EV_A_ &fs_w);
		3071	ev_unref (EV_A);
		3072	}
2560		3073
2561	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3074	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2562	{	3075	{
2563	WL w_ = fs_hash [slot].head;	3076	WL w_ = fs_hash [slot].head;
2564	fs_hash [slot].head = 0;	3077	fs_hash [slot].head = 0;
…		…
2571	w->wd = -1;	3084	w->wd = -1;
2572		3085
2573	if (fs_fd >= 0)	3086	if (fs_fd >= 0)
2574	infy_add (EV_A_ w); /* re-add, no matter what */	3087	infy_add (EV_A_ w); /* re-add, no matter what */
2575	else	3088	else
		3089	{
		3090	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3091	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2576	ev_timer_start (EV_A_ &w->timer);	3092	ev_timer_again (EV_A_ &w->timer);
		3093	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3094	}
2577	}	3095	}
2578
2579	}	3096	}
2580	}	3097	}
2581		3098
2582	#endif	3099	#endif
2583		3100
…		…
2599	static void noinline	3116	static void noinline
2600	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3117	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2601	{	3118	{
2602	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	3119	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2603		3120
2604	/* we copy this here each the time so that */	3121	ev_statdata prev = w->attr;
2605	/* prev has the old value when the callback gets invoked */
2606	w->prev = w->attr;
2607	ev_stat_stat (EV_A_ w);	3122	ev_stat_stat (EV_A_ w);
2608		3123
2609	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3124	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2610	if (	3125	if (
2611	w->prev.st_dev != w->attr.st_dev	3126	prev.st_dev != w->attr.st_dev
2612	|| w->prev.st_ino != w->attr.st_ino	3127	|| prev.st_ino != w->attr.st_ino
2613	|| w->prev.st_mode != w->attr.st_mode	3128	|| prev.st_mode != w->attr.st_mode
2614	|| w->prev.st_nlink != w->attr.st_nlink	3129	|| prev.st_nlink != w->attr.st_nlink
2615	|| w->prev.st_uid != w->attr.st_uid	3130	|| prev.st_uid != w->attr.st_uid
2616	|| w->prev.st_gid != w->attr.st_gid	3131	|| prev.st_gid != w->attr.st_gid
2617	|| w->prev.st_rdev != w->attr.st_rdev	3132	|| prev.st_rdev != w->attr.st_rdev
2618	|| w->prev.st_size != w->attr.st_size	3133	|| prev.st_size != w->attr.st_size
2619	|| w->prev.st_atime != w->attr.st_atime	3134	|| prev.st_atime != w->attr.st_atime
2620	|| w->prev.st_mtime != w->attr.st_mtime	3135	|| prev.st_mtime != w->attr.st_mtime
2621	|| w->prev.st_ctime != w->attr.st_ctime	3136	|| prev.st_ctime != w->attr.st_ctime
2622	) {	3137	) {
		3138	/* we only update w->prev on actual differences */
		3139	/* in case we test more often than invoke the callback, */
		3140	/* to ensure that prev is always different to attr */
		3141	w->prev = prev;
		3142
2623	#if EV_USE_INOTIFY	3143	#if EV_USE_INOTIFY
		3144	if (fs_fd >= 0)
		3145	{
2624	infy_del (EV_A_ w);	3146	infy_del (EV_A_ w);
2625	infy_add (EV_A_ w);	3147	infy_add (EV_A_ w);
2626	ev_stat_stat (EV_A_ w); /* avoid race... */	3148	ev_stat_stat (EV_A_ w); /* avoid race... */
		3149	}
2627	#endif	3150	#endif
2628		3151
2629	ev_feed_event (EV_A_ w, EV_STAT);	3152	ev_feed_event (EV_A_ w, EV_STAT);
2630	}	3153	}
2631	}	3154	}
…		…
2634	ev_stat_start (EV_P_ ev_stat *w)	3157	ev_stat_start (EV_P_ ev_stat *w)
2635	{	3158	{
2636	if (expect_false (ev_is_active (w)))	3159	if (expect_false (ev_is_active (w)))
2637	return;	3160	return;
2638		3161
2639	/* since we use memcmp, we need to clear any padding data etc. */
2640	memset (&w->prev, 0, sizeof (ev_statdata));
2641	memset (&w->attr, 0, sizeof (ev_statdata));
2642
2643	ev_stat_stat (EV_A_ w);	3162	ev_stat_stat (EV_A_ w);
2644		3163
		3164	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2645	if (w->interval < MIN_STAT_INTERVAL)	3165	w->interval = MIN_STAT_INTERVAL;
2646	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2647		3166
2648	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3167	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2649	ev_set_priority (&w->timer, ev_priority (w));	3168	ev_set_priority (&w->timer, ev_priority (w));
2650		3169
2651	#if EV_USE_INOTIFY	3170	#if EV_USE_INOTIFY
2652	infy_init (EV_A);	3171	infy_init (EV_A);
2653		3172
2654	if (fs_fd >= 0)	3173	if (fs_fd >= 0)
2655	infy_add (EV_A_ w);	3174	infy_add (EV_A_ w);
2656	else	3175	else
2657	#endif	3176	#endif
		3177	{
2658	ev_timer_start (EV_A_ &w->timer);	3178	ev_timer_again (EV_A_ &w->timer);
		3179	ev_unref (EV_A);
		3180	}
2659		3181
2660	ev_start (EV_A_ (W)w, 1);	3182	ev_start (EV_A_ (W)w, 1);
2661		3183
2662	EV_FREQUENT_CHECK;	3184	EV_FREQUENT_CHECK;
2663	}	3185	}
…		…
2672	EV_FREQUENT_CHECK;	3194	EV_FREQUENT_CHECK;
2673		3195
2674	#if EV_USE_INOTIFY	3196	#if EV_USE_INOTIFY
2675	infy_del (EV_A_ w);	3197	infy_del (EV_A_ w);
2676	#endif	3198	#endif
		3199
		3200	if (ev_is_active (&w->timer))
		3201	{
		3202	ev_ref (EV_A);
2677	ev_timer_stop (EV_A_ &w->timer);	3203	ev_timer_stop (EV_A_ &w->timer);
		3204	}
2678		3205
2679	ev_stop (EV_A_ (W)w);	3206	ev_stop (EV_A_ (W)w);
2680		3207
2681	EV_FREQUENT_CHECK;	3208	EV_FREQUENT_CHECK;
2682	}	3209	}
…		…
2823	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3350	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2824	{	3351	{
2825	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3352	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2826		3353
2827	{	3354	{
2828	struct ev_loop *loop = w->other;	3355	EV_P = w->other;
2829		3356
2830	while (fdchangecnt)	3357	while (fdchangecnt)
2831	{	3358	{
2832	fd_reify (EV_A);	3359	fd_reify (EV_A);
2833	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3360	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2834	}	3361	}
2835	}	3362	}
2836	}	3363	}
2837		3364
		3365	static void
		3366	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3367	{
		3368	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3369
		3370	ev_embed_stop (EV_A_ w);
		3371
		3372	{
		3373	EV_P = w->other;
		3374
		3375	ev_loop_fork (EV_A);
		3376	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3377	}
		3378
		3379	ev_embed_start (EV_A_ w);
		3380	}
		3381
2838	#if 0	3382	#if 0
2839	static void	3383	static void
2840	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3384	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2841	{	3385	{
2842	ev_idle_stop (EV_A_ idle);	3386	ev_idle_stop (EV_A_ idle);
…		…
2848	{	3392	{
2849	if (expect_false (ev_is_active (w)))	3393	if (expect_false (ev_is_active (w)))
2850	return;	3394	return;
2851		3395
2852	{	3396	{
2853	struct ev_loop *loop = w->other;	3397	EV_P = w->other;
2854	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3398	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2855	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3399	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2856	}	3400	}
2857		3401
2858	EV_FREQUENT_CHECK;	3402	EV_FREQUENT_CHECK;
2859		3403
…		…
2862		3406
2863	ev_prepare_init (&w->prepare, embed_prepare_cb);	3407	ev_prepare_init (&w->prepare, embed_prepare_cb);
2864	ev_set_priority (&w->prepare, EV_MINPRI);	3408	ev_set_priority (&w->prepare, EV_MINPRI);
2865	ev_prepare_start (EV_A_ &w->prepare);	3409	ev_prepare_start (EV_A_ &w->prepare);
2866		3410
		3411	ev_fork_init (&w->fork, embed_fork_cb);
		3412	ev_fork_start (EV_A_ &w->fork);
		3413
2867	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3414	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2868		3415
2869	ev_start (EV_A_ (W)w, 1);	3416	ev_start (EV_A_ (W)w, 1);
2870		3417
2871	EV_FREQUENT_CHECK;	3418	EV_FREQUENT_CHECK;
…		…
2878	if (expect_false (!ev_is_active (w)))	3425	if (expect_false (!ev_is_active (w)))
2879	return;	3426	return;
2880		3427
2881	EV_FREQUENT_CHECK;	3428	EV_FREQUENT_CHECK;
2882		3429
2883	ev_io_stop (EV_A_ &w->io);	3430	ev_io_stop (EV_A_ &w->io);
2884	ev_prepare_stop (EV_A_ &w->prepare);	3431	ev_prepare_stop (EV_A_ &w->prepare);
		3432	ev_fork_stop (EV_A_ &w->fork);
2885		3433
2886	ev_stop (EV_A_ (W)w);	3434	ev_stop (EV_A_ (W)w);
2887		3435
2888	EV_FREQUENT_CHECK;	3436	EV_FREQUENT_CHECK;
2889	}	3437	}
…		…
2968		3516
2969	void	3517	void
2970	ev_async_send (EV_P_ ev_async *w)	3518	ev_async_send (EV_P_ ev_async *w)
2971	{	3519	{
2972	w->sent = 1;	3520	w->sent = 1;
2973	evpipe_write (EV_A_ &gotasync);	3521	evpipe_write (EV_A_ &async_pending);
2974	}	3522	}
2975	#endif	3523	#endif
2976		3524
2977	/*****************************************************************************/	3525	/*****************************************************************************/
2978		3526
…		…
2998	}	3546	}
2999		3547
3000	static void	3548	static void
3001	once_cb_io (EV_P_ ev_io *w, int revents)	3549	once_cb_io (EV_P_ ev_io *w, int revents)
3002	{	3550	{
3003	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3551	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3552
		3553	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
3004	}	3554	}
3005		3555
3006	static void	3556	static void
3007	once_cb_to (EV_P_ ev_timer *w, int revents)	3557	once_cb_to (EV_P_ ev_timer *w, int revents)
3008	{	3558	{
3009	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3559	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3560
		3561	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3010	}	3562	}
3011		3563
3012	void	3564	void
3013	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3565	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
3014	{	3566	{
…		…
3036	ev_timer_set (&once->to, timeout, 0.);	3588	ev_timer_set (&once->to, timeout, 0.);
3037	ev_timer_start (EV_A_ &once->to);	3589	ev_timer_start (EV_A_ &once->to);
3038	}	3590	}
3039	}	3591	}
3040		3592
		3593	/*****************************************************************************/
		3594
		3595	#if EV_WALK_ENABLE
		3596	void
		3597	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3598	{
		3599	int i, j;
		3600	ev_watcher_list *wl, *wn;
		3601
		3602	if (types & (EV_IO | EV_EMBED))
		3603	for (i = 0; i < anfdmax; ++i)
		3604	for (wl = anfds [i].head; wl; )
		3605	{
		3606	wn = wl->next;
		3607
		3608	#if EV_EMBED_ENABLE
		3609	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3610	{
		3611	if (types & EV_EMBED)
		3612	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3613	}
		3614	else
		3615	#endif
		3616	#if EV_USE_INOTIFY
		3617	if (ev_cb ((ev_io *)wl) == infy_cb)
		3618	;
		3619	else
		3620	#endif
		3621	if ((ev_io *)wl != &pipe_w)
		3622	if (types & EV_IO)
		3623	cb (EV_A_ EV_IO, wl);
		3624
		3625	wl = wn;
		3626	}
		3627
		3628	if (types & (EV_TIMER | EV_STAT))
		3629	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3630	#if EV_STAT_ENABLE
		3631	/*TODO: timer is not always active*/
		3632	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3633	{
		3634	if (types & EV_STAT)
		3635	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3636	}
		3637	else
		3638	#endif
		3639	if (types & EV_TIMER)
		3640	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3641
		3642	#if EV_PERIODIC_ENABLE
		3643	if (types & EV_PERIODIC)
		3644	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3645	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3646	#endif
		3647
		3648	#if EV_IDLE_ENABLE
		3649	if (types & EV_IDLE)
		3650	for (j = NUMPRI; i--; )
		3651	for (i = idlecnt [j]; i--; )
		3652	cb (EV_A_ EV_IDLE, idles [j][i]);
		3653	#endif
		3654
		3655	#if EV_FORK_ENABLE
		3656	if (types & EV_FORK)
		3657	for (i = forkcnt; i--; )
		3658	if (ev_cb (forks [i]) != embed_fork_cb)
		3659	cb (EV_A_ EV_FORK, forks [i]);
		3660	#endif
		3661
		3662	#if EV_ASYNC_ENABLE
		3663	if (types & EV_ASYNC)
		3664	for (i = asynccnt; i--; )
		3665	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3666	#endif
		3667
		3668	if (types & EV_PREPARE)
		3669	for (i = preparecnt; i--; )
		3670	#if EV_EMBED_ENABLE
		3671	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3672	#endif
		3673	cb (EV_A_ EV_PREPARE, prepares [i]);
		3674
		3675	if (types & EV_CHECK)
		3676	for (i = checkcnt; i--; )
		3677	cb (EV_A_ EV_CHECK, checks [i]);
		3678
		3679	if (types & EV_SIGNAL)
		3680	for (i = 0; i < EV_NSIG - 1; ++i)
		3681	for (wl = signals [i].head; wl; )
		3682	{
		3683	wn = wl->next;
		3684	cb (EV_A_ EV_SIGNAL, wl);
		3685	wl = wn;
		3686	}
		3687
		3688	if (types & EV_CHILD)
		3689	for (i = EV_PID_HASHSIZE; i--; )
		3690	for (wl = childs [i]; wl; )
		3691	{
		3692	wn = wl->next;
		3693	cb (EV_A_ EV_CHILD, wl);
		3694	wl = wn;
		3695	}
		3696	/* EV_STAT 0x00001000 /* stat data changed */
		3697	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3698	}
		3699	#endif
		3700
3041	#if EV_MULTIPLICITY	3701	#if EV_MULTIPLICITY
3042	#include "ev_wrap.h"	3702	#include "ev_wrap.h"
3043	#endif	3703	#endif
3044		3704
3045	#ifdef __cplusplus	3705	#ifdef __cplusplus

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