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Comparing libev/ev.c (file contents):
Revision 1.266 by root, Fri Oct 24 08:15:33 2008 UTC vs.
Revision 1.333 by root, Tue Mar 9 08:58:22 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
…		…
160	# define WIN32_LEAN_AND_MEAN	184	# define WIN32_LEAN_AND_MEAN
161	# include <windows.h>	185	# include <windows.h>
162	# ifndef EV_SELECT_IS_WINSOCKET	186	# ifndef EV_SELECT_IS_WINSOCKET
163	# define EV_SELECT_IS_WINSOCKET 1	187	# define EV_SELECT_IS_WINSOCKET 1
164	# endif	188	# endif
		189	# undef EV_AVOID_STDIO
165	#endif	190	#endif
166		191
167	/* this block tries to deduce configuration from header-defined symbols and defaults */	192	/* this block tries to deduce configuration from header-defined symbols and defaults */
		193
		194	/* try to deduce the maximum number of signals on this platform */
		195	#if defined (EV_NSIG)
		196	/* use what's provided */
		197	#elif defined (NSIG)
		198	# define EV_NSIG (NSIG)
		199	#elif defined(_NSIG)
		200	# define EV_NSIG (_NSIG)
		201	#elif defined (SIGMAX)
		202	# define EV_NSIG (SIGMAX+1)
		203	#elif defined (SIG_MAX)
		204	# define EV_NSIG (SIG_MAX+1)
		205	#elif defined (_SIG_MAX)
		206	# define EV_NSIG (_SIG_MAX+1)
		207	#elif defined (MAXSIG)
		208	# define EV_NSIG (MAXSIG+1)
		209	#elif defined (MAX_SIG)
		210	# define EV_NSIG (MAX_SIG+1)
		211	#elif defined (SIGARRAYSIZE)
		212	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		213	#elif defined (_sys_nsig)
		214	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		215	#else
		216	# error "unable to find value for NSIG, please report"
		217	/* to make it compile regardless, just remove the above line */
		218	# define EV_NSIG 65
		219	#endif
		220
		221	#ifndef EV_USE_CLOCK_SYSCALL
		222	# if __linux && __GLIBC__ >= 2
		223	# define EV_USE_CLOCK_SYSCALL 1
		224	# else
		225	# define EV_USE_CLOCK_SYSCALL 0
		226	# endif
		227	#endif
168		228
169	#ifndef EV_USE_MONOTONIC	229	#ifndef EV_USE_MONOTONIC
170	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0	230	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171	# define EV_USE_MONOTONIC 1	231	# define EV_USE_MONOTONIC 1
172	# else	232	# else
173	# define EV_USE_MONOTONIC 0	233	# define EV_USE_MONOTONIC 0
174	# endif	234	# endif
175	#endif	235	#endif
176		236
177	#ifndef EV_USE_REALTIME	237	#ifndef EV_USE_REALTIME
178	# define EV_USE_REALTIME 0	238	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179	#endif	239	#endif
180		240
181	#ifndef EV_USE_NANOSLEEP	241	#ifndef EV_USE_NANOSLEEP
182	# if _POSIX_C_SOURCE >= 199309L	242	# if _POSIX_C_SOURCE >= 199309L
183	# define EV_USE_NANOSLEEP 1	243	# define EV_USE_NANOSLEEP 1
…		…
244	# else	304	# else
245	# define EV_USE_EVENTFD 0	305	# define EV_USE_EVENTFD 0
246	# endif	306	# endif
247	#endif	307	#endif
248		308
		309	#ifndef EV_USE_SIGNALFD
		310	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		311	# define EV_USE_SIGNALFD 1
		312	# else
		313	# define EV_USE_SIGNALFD 0
		314	# endif
		315	#endif
		316
249	#if 0 /* debugging */	317	#if 0 /* debugging */
250	# define EV_VERIFY 3	318	# define EV_VERIFY 3
251	# define EV_USE_4HEAP 1	319	# define EV_USE_4HEAP 1
252	# define EV_HEAP_CACHE_AT 1	320	# define EV_HEAP_CACHE_AT 1
253	#endif	321	#endif
…		…
262		330
263	#ifndef EV_HEAP_CACHE_AT	331	#ifndef EV_HEAP_CACHE_AT
264	# define EV_HEAP_CACHE_AT !EV_MINIMAL	332	# define EV_HEAP_CACHE_AT !EV_MINIMAL
265	#endif	333	#endif
266		334
		335	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		336	/* which makes programs even slower. might work on other unices, too. */
		337	#if EV_USE_CLOCK_SYSCALL
		338	# include <syscall.h>
		339	# ifdef SYS_clock_gettime
		340	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		341	# undef EV_USE_MONOTONIC
		342	# define EV_USE_MONOTONIC 1
		343	# else
		344	# undef EV_USE_CLOCK_SYSCALL
		345	# define EV_USE_CLOCK_SYSCALL 0
		346	# endif
		347	#endif
		348
267	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	349	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
		350
		351	#ifdef _AIX
		352	/* AIX has a completely broken poll.h header */
		353	# undef EV_USE_POLL
		354	# define EV_USE_POLL 0
		355	#endif
268		356
269	#ifndef CLOCK_MONOTONIC	357	#ifndef CLOCK_MONOTONIC
270	# undef EV_USE_MONOTONIC	358	# undef EV_USE_MONOTONIC
271	# define EV_USE_MONOTONIC 0	359	# define EV_USE_MONOTONIC 0
272	#endif	360	#endif
…		…
287	# endif	375	# endif
288	#endif	376	#endif
289		377
290	#if EV_USE_INOTIFY	378	#if EV_USE_INOTIFY
291	# include <sys/utsname.h>	379	# include <sys/utsname.h>
		380	# include <sys/statfs.h>
292	# include <sys/inotify.h>	381	# include <sys/inotify.h>
293	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */	382	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
294	# ifndef IN_DONT_FOLLOW	383	# ifndef IN_DONT_FOLLOW
295	# undef EV_USE_INOTIFY	384	# undef EV_USE_INOTIFY
296	# define EV_USE_INOTIFY 0	385	# define EV_USE_INOTIFY 0
…		…
302	#endif	391	#endif
303		392
304	#if EV_USE_EVENTFD	393	#if EV_USE_EVENTFD
305	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	394	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
306	# include <stdint.h>	395	# include <stdint.h>
		396	# ifndef EFD_NONBLOCK
		397	# define EFD_NONBLOCK O_NONBLOCK
		398	# endif
		399	# ifndef EFD_CLOEXEC
		400	# ifdef O_CLOEXEC
		401	# define EFD_CLOEXEC O_CLOEXEC
		402	# else
		403	# define EFD_CLOEXEC 02000000
		404	# endif
		405	# endif
307	# ifdef __cplusplus	406	# ifdef __cplusplus
308	extern "C" {	407	extern "C" {
309	# endif	408	# endif
310	int eventfd (unsigned int initval, int flags);	409	int (eventfd) (unsigned int initval, int flags);
311	# ifdef __cplusplus	410	# ifdef __cplusplus
312	}	411	}
313	# endif	412	# endif
314	#endif	413	#endif
		414
		415	#if EV_USE_SIGNALFD
		416	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		417	# include <stdint.h>
		418	# ifndef SFD_NONBLOCK
		419	# define SFD_NONBLOCK O_NONBLOCK
		420	# endif
		421	# ifndef SFD_CLOEXEC
		422	# ifdef O_CLOEXEC
		423	# define SFD_CLOEXEC O_CLOEXEC
		424	# else
		425	# define SFD_CLOEXEC 02000000
		426	# endif
		427	# endif
		428	# ifdef __cplusplus
		429	extern "C" {
		430	# endif
		431	int signalfd (int fd, const sigset_t *mask, int flags);
		432
		433	struct signalfd_siginfo
		434	{
		435	uint32_t ssi_signo;
		436	char pad[128 - sizeof (uint32_t)];
		437	};
		438	# ifdef __cplusplus
		439	}
		440	# endif
		441	#endif
		442
315		443
316	/**/	444	/**/
317		445
318	#if EV_VERIFY >= 3	446	#if EV_VERIFY >= 3
319	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	447	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
…		…
331	*/	459	*/
332	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	460	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
333		461
334	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	462	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
335	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	463	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
336	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
337		464
338	#if __GNUC__ >= 4	465	#if __GNUC__ >= 4
339	# define expect(expr,value) __builtin_expect ((expr),(value))	466	# define expect(expr,value) __builtin_expect ((expr),(value))
340	# define noinline __attribute__ ((noinline))	467	# define noinline __attribute__ ((noinline))
341	#else	468	#else
…		…
354	# define inline_speed static noinline	481	# define inline_speed static noinline
355	#else	482	#else
356	# define inline_speed static inline	483	# define inline_speed static inline
357	#endif	484	#endif
358		485
359	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	486	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		487
		488	#if EV_MINPRI == EV_MAXPRI
		489	# define ABSPRI(w) (((W)w), 0)
		490	#else
360	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	491	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		492	#endif
361		493
362	#define EMPTY /* required for microsofts broken pseudo-c compiler */	494	#define EMPTY /* required for microsofts broken pseudo-c compiler */
363	#define EMPTY2(a,b) /* used to suppress some warnings */	495	#define EMPTY2(a,b) /* used to suppress some warnings */
364		496
365	typedef ev_watcher *W;	497	typedef ev_watcher *W;
…		…
367	typedef ev_watcher_time *WT;	499	typedef ev_watcher_time *WT;
368		500
369	#define ev_active(w) ((W)(w))->active	501	#define ev_active(w) ((W)(w))->active
370	#define ev_at(w) ((WT)(w))->at	502	#define ev_at(w) ((WT)(w))->at
371		503
372	#if EV_USE_MONOTONIC	504	#if EV_USE_REALTIME
373	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	505	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
374	/* giving it a reasonably high chance of working on typical architetcures */	506	/* giving it a reasonably high chance of working on typical architetcures */
		507	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		508	#endif
		509
		510	#if EV_USE_MONOTONIC
375	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	511	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		512	#endif
		513
		514	#ifndef EV_FD_TO_WIN32_HANDLE
		515	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		516	#endif
		517	#ifndef EV_WIN32_HANDLE_TO_FD
		518	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		519	#endif
		520	#ifndef EV_WIN32_CLOSE_FD
		521	# define EV_WIN32_CLOSE_FD(fd) close (fd)
376	#endif	522	#endif
377		523
378	#ifdef _WIN32	524	#ifdef _WIN32
379	# include "ev_win32.c"	525	# include "ev_win32.c"
380	#endif	526	#endif
381		527
382	/*****************************************************************************/	528	/*****************************************************************************/
383		529
		530	#if EV_AVOID_STDIO
		531	static void noinline
		532	ev_printerr (const char *msg)
		533	{
		534	write (STDERR_FILENO, msg, strlen (msg));
		535	}
		536	#endif
		537
384	static void (*syserr_cb)(const char *msg);	538	static void (*syserr_cb)(const char *msg);
385		539
386	void	540	void
387	ev_set_syserr_cb (void (*cb)(const char *msg))	541	ev_set_syserr_cb (void (*cb)(const char *msg))
388	{	542	{
389	syserr_cb = cb;	543	syserr_cb = cb;
390	}	544	}
391		545
392	static void noinline	546	static void noinline
393	syserr (const char *msg)	547	ev_syserr (const char *msg)
394	{	548	{
395	if (!msg)	549	if (!msg)
396	msg = "(libev) system error";	550	msg = "(libev) system error";
397		551
398	if (syserr_cb)	552	if (syserr_cb)
399	syserr_cb (msg);	553	syserr_cb (msg);
400	else	554	else
401	{	555	{
		556	#if EV_AVOID_STDIO
		557	const char *err = strerror (errno);
		558
		559	ev_printerr (msg);
		560	ev_printerr (": ");
		561	ev_printerr (err);
		562	ev_printerr ("\n");
		563	#else
402	perror (msg);	564	perror (msg);
		565	#endif
403	abort ();	566	abort ();
404	}	567	}
405	}	568	}
406		569
407	static void *	570	static void *
…		…
432	{	595	{
433	ptr = alloc (ptr, size);	596	ptr = alloc (ptr, size);
434		597
435	if (!ptr && size)	598	if (!ptr && size)
436	{	599	{
		600	#if EV_AVOID_STDIO
		601	ev_printerr ("libev: memory allocation failed, aborting.\n");
		602	#else
437	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	603	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		604	#endif
438	abort ();	605	abort ();
439	}	606	}
440		607
441	return ptr;	608	return ptr;
442	}	609	}
…		…
444	#define ev_malloc(size) ev_realloc (0, (size))	611	#define ev_malloc(size) ev_realloc (0, (size))
445	#define ev_free(ptr) ev_realloc ((ptr), 0)	612	#define ev_free(ptr) ev_realloc ((ptr), 0)
446		613
447	/*****************************************************************************/	614	/*****************************************************************************/
448		615
		616	/* set in reify when reification needed */
		617	#define EV_ANFD_REIFY 1
		618
		619	/* file descriptor info structure */
449	typedef struct	620	typedef struct
450	{	621	{
451	WL head;	622	WL head;
452	unsigned char events;	623	unsigned char events; /* the events watched for */
453	unsigned char reify;	624	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
454	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */	625	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
455	unsigned char unused; /* currently unused padding */	626	unsigned char unused;
		627	#if EV_USE_EPOLL
		628	unsigned int egen; /* generation counter to counter epoll bugs */
		629	#endif
456	#if EV_SELECT_IS_WINSOCKET	630	#if EV_SELECT_IS_WINSOCKET
457	SOCKET handle;	631	SOCKET handle;
458	#endif	632	#endif
459	} ANFD;	633	} ANFD;
460		634
		635	/* stores the pending event set for a given watcher */
461	typedef struct	636	typedef struct
462	{	637	{
463	W w;	638	W w;
464	int events;	639	int events; /* the pending event set for the given watcher */
465	} ANPENDING;	640	} ANPENDING;
466		641
467	#if EV_USE_INOTIFY	642	#if EV_USE_INOTIFY
468	/* hash table entry per inotify-id */	643	/* hash table entry per inotify-id */
469	typedef struct	644	typedef struct
…		…
472	} ANFS;	647	} ANFS;
473	#endif	648	#endif
474		649
475	/* Heap Entry */	650	/* Heap Entry */
476	#if EV_HEAP_CACHE_AT	651	#if EV_HEAP_CACHE_AT
		652	/* a heap element */
477	typedef struct {	653	typedef struct {
478	ev_tstamp at;	654	ev_tstamp at;
479	WT w;	655	WT w;
480	} ANHE;	656	} ANHE;
481		657
482	#define ANHE_w(he) (he).w /* access watcher, read-write */	658	#define ANHE_w(he) (he).w /* access watcher, read-write */
483	#define ANHE_at(he) (he).at /* access cached at, read-only */	659	#define ANHE_at(he) (he).at /* access cached at, read-only */
484	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */	660	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
485	#else	661	#else
		662	/* a heap element */
486	typedef WT ANHE;	663	typedef WT ANHE;
487		664
488	#define ANHE_w(he) (he)	665	#define ANHE_w(he) (he)
489	#define ANHE_at(he) (he)->at	666	#define ANHE_at(he) (he)->at
490	#define ANHE_at_cache(he)	667	#define ANHE_at_cache(he)
…		…
514		691
515	static int ev_default_loop_ptr;	692	static int ev_default_loop_ptr;
516		693
517	#endif	694	#endif
518		695
		696	#if EV_MINIMAL < 2
		697	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		698	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		699	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		700	#else
		701	# define EV_RELEASE_CB (void)0
		702	# define EV_ACQUIRE_CB (void)0
		703	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		704	#endif
		705
		706	#define EVUNLOOP_RECURSE 0x80
		707
519	/*****************************************************************************/	708	/*****************************************************************************/
520		709
		710	#ifndef EV_HAVE_EV_TIME
521	ev_tstamp	711	ev_tstamp
522	ev_time (void)	712	ev_time (void)
523	{	713	{
524	#if EV_USE_REALTIME	714	#if EV_USE_REALTIME
		715	if (expect_true (have_realtime))
		716	{
525	struct timespec ts;	717	struct timespec ts;
526	clock_gettime (CLOCK_REALTIME, &ts);	718	clock_gettime (CLOCK_REALTIME, &ts);
527	return ts.tv_sec + ts.tv_nsec * 1e-9;	719	return ts.tv_sec + ts.tv_nsec * 1e-9;
528	#else	720	}
		721	#endif
		722
529	struct timeval tv;	723	struct timeval tv;
530	gettimeofday (&tv, 0);	724	gettimeofday (&tv, 0);
531	return tv.tv_sec + tv.tv_usec * 1e-6;	725	return tv.tv_sec + tv.tv_usec * 1e-6;
532	#endif
533	}	726	}
		727	#endif
534		728
535	ev_tstamp inline_size	729	inline_size ev_tstamp
536	get_clock (void)	730	get_clock (void)
537	{	731	{
538	#if EV_USE_MONOTONIC	732	#if EV_USE_MONOTONIC
539	if (expect_true (have_monotonic))	733	if (expect_true (have_monotonic))
540	{	734	{
…		…
574		768
575	tv.tv_sec = (time_t)delay;	769	tv.tv_sec = (time_t)delay;
576	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	770	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
577		771
578	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	772	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
579	/* somehting nto guaranteed by newer posix versions, but guaranteed */	773	/* something not guaranteed by newer posix versions, but guaranteed */
580	/* by older ones */	774	/* by older ones */
581	select (0, 0, 0, 0, &tv);	775	select (0, 0, 0, 0, &tv);
582	#endif	776	#endif
583	}	777	}
584	}	778	}
585		779
586	/*****************************************************************************/	780	/*****************************************************************************/
587		781
588	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	782	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
589		783
590	int inline_size	784	/* find a suitable new size for the given array, */
		785	/* hopefully by rounding to a ncie-to-malloc size */
		786	inline_size int
591	array_nextsize (int elem, int cur, int cnt)	787	array_nextsize (int elem, int cur, int cnt)
592	{	788	{
593	int ncur = cur + 1;	789	int ncur = cur + 1;
594		790
595	do	791	do
…		…
636	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	832	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
637	}	833	}
638	#endif	834	#endif
639		835
640	#define array_free(stem, idx) \	836	#define array_free(stem, idx) \
641	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	837	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
642		838
643	/*****************************************************************************/	839	/*****************************************************************************/
		840
		841	/* dummy callback for pending events */
		842	static void noinline
		843	pendingcb (EV_P_ ev_prepare *w, int revents)
		844	{
		845	}
644		846
645	void noinline	847	void noinline
646	ev_feed_event (EV_P_ void *w, int revents)	848	ev_feed_event (EV_P_ void *w, int revents)
647	{	849	{
648	W w_ = (W)w;	850	W w_ = (W)w;
…		…
657	pendings [pri][w_->pending - 1].w = w_;	859	pendings [pri][w_->pending - 1].w = w_;
658	pendings [pri][w_->pending - 1].events = revents;	860	pendings [pri][w_->pending - 1].events = revents;
659	}	861	}
660	}	862	}
661		863
662	void inline_speed	864	inline_speed void
		865	feed_reverse (EV_P_ W w)
		866	{
		867	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		868	rfeeds [rfeedcnt++] = w;
		869	}
		870
		871	inline_size void
		872	feed_reverse_done (EV_P_ int revents)
		873	{
		874	do
		875	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		876	while (rfeedcnt);
		877	}
		878
		879	inline_speed void
663	queue_events (EV_P_ W *events, int eventcnt, int type)	880	queue_events (EV_P_ W *events, int eventcnt, int type)
664	{	881	{
665	int i;	882	int i;
666		883
667	for (i = 0; i < eventcnt; ++i)	884	for (i = 0; i < eventcnt; ++i)
668	ev_feed_event (EV_A_ events [i], type);	885	ev_feed_event (EV_A_ events [i], type);
669	}	886	}
670		887
671	/*****************************************************************************/	888	/*****************************************************************************/
672		889
673	void inline_speed	890	inline_speed void
674	fd_event (EV_P_ int fd, int revents)	891	fd_event_nc (EV_P_ int fd, int revents)
675	{	892	{
676	ANFD *anfd = anfds + fd;	893	ANFD *anfd = anfds + fd;
677	ev_io *w;	894	ev_io *w;
678		895
679	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	896	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
683	if (ev)	900	if (ev)
684	ev_feed_event (EV_A_ (W)w, ev);	901	ev_feed_event (EV_A_ (W)w, ev);
685	}	902	}
686	}	903	}
687		904
		905	/* do not submit kernel events for fds that have reify set */
		906	/* because that means they changed while we were polling for new events */
		907	inline_speed void
		908	fd_event (EV_P_ int fd, int revents)
		909	{
		910	ANFD *anfd = anfds + fd;
		911
		912	if (expect_true (!anfd->reify))
		913	fd_event_nc (EV_A_ fd, revents);
		914	}
		915
688	void	916	void
689	ev_feed_fd_event (EV_P_ int fd, int revents)	917	ev_feed_fd_event (EV_P_ int fd, int revents)
690	{	918	{
691	if (fd >= 0 && fd < anfdmax)	919	if (fd >= 0 && fd < anfdmax)
692	fd_event (EV_A_ fd, revents);	920	fd_event_nc (EV_A_ fd, revents);
693	}	921	}
694		922
695	void inline_size	923	/* make sure the external fd watch events are in-sync */
		924	/* with the kernel/libev internal state */
		925	inline_size void
696	fd_reify (EV_P)	926	fd_reify (EV_P)
697	{	927	{
698	int i;	928	int i;
699		929
700	for (i = 0; i < fdchangecnt; ++i)	930	for (i = 0; i < fdchangecnt; ++i)
…		…
710		940
711	#if EV_SELECT_IS_WINSOCKET	941	#if EV_SELECT_IS_WINSOCKET
712	if (events)	942	if (events)
713	{	943	{
714	unsigned long arg;	944	unsigned long arg;
715	#ifdef EV_FD_TO_WIN32_HANDLE
716	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	945	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
717	#else
718	anfd->handle = _get_osfhandle (fd);
719	#endif
720	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	946	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
721	}	947	}
722	#endif	948	#endif
723		949
724	{	950	{
725	unsigned char o_events = anfd->events;	951	unsigned char o_events = anfd->events;
726	unsigned char o_reify = anfd->reify;	952	unsigned char o_reify = anfd->reify;
727		953
728	anfd->reify = 0;	954	anfd->reify = 0;
729	anfd->events = events;	955	anfd->events = events;
730		956
731	if (o_events != events || o_reify & EV_IOFDSET)	957	if (o_events != events || o_reify & EV__IOFDSET)
732	backend_modify (EV_A_ fd, o_events, events);	958	backend_modify (EV_A_ fd, o_events, events);
733	}	959	}
734	}	960	}
735		961
736	fdchangecnt = 0;	962	fdchangecnt = 0;
737	}	963	}
738		964
739	void inline_size	965	/* something about the given fd changed */
		966	inline_size void
740	fd_change (EV_P_ int fd, int flags)	967	fd_change (EV_P_ int fd, int flags)
741	{	968	{
742	unsigned char reify = anfds [fd].reify;	969	unsigned char reify = anfds [fd].reify;
743	anfds [fd].reify |= flags;	970	anfds [fd].reify |= flags;
744		971
…		…
748	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	975	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
749	fdchanges [fdchangecnt - 1] = fd;	976	fdchanges [fdchangecnt - 1] = fd;
750	}	977	}
751	}	978	}
752		979
753	void inline_speed	980	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		981	inline_speed void
754	fd_kill (EV_P_ int fd)	982	fd_kill (EV_P_ int fd)
755	{	983	{
756	ev_io *w;	984	ev_io *w;
757		985
758	while ((w = (ev_io *)anfds [fd].head))	986	while ((w = (ev_io *)anfds [fd].head))
…		…
760	ev_io_stop (EV_A_ w);	988	ev_io_stop (EV_A_ w);
761	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	989	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
762	}	990	}
763	}	991	}
764		992
765	int inline_size	993	/* check whether the given fd is atcually valid, for error recovery */
		994	inline_size int
766	fd_valid (int fd)	995	fd_valid (int fd)
767	{	996	{
768	#ifdef _WIN32	997	#ifdef _WIN32
769	return _get_osfhandle (fd) != -1;	998	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
770	#else	999	#else
771	return fcntl (fd, F_GETFD) != -1;	1000	return fcntl (fd, F_GETFD) != -1;
772	#endif	1001	#endif
773	}	1002	}
774		1003
…		…
792		1021
793	for (fd = anfdmax; fd--; )	1022	for (fd = anfdmax; fd--; )
794	if (anfds [fd].events)	1023	if (anfds [fd].events)
795	{	1024	{
796	fd_kill (EV_A_ fd);	1025	fd_kill (EV_A_ fd);
797	return;	1026	break;
798	}	1027	}
799	}	1028	}
800		1029
801	/* usually called after fork if backend needs to re-arm all fds from scratch */	1030	/* usually called after fork if backend needs to re-arm all fds from scratch */
802	static void noinline	1031	static void noinline
…		…
806		1035
807	for (fd = 0; fd < anfdmax; ++fd)	1036	for (fd = 0; fd < anfdmax; ++fd)
808	if (anfds [fd].events)	1037	if (anfds [fd].events)
809	{	1038	{
810	anfds [fd].events = 0;	1039	anfds [fd].events = 0;
		1040	anfds [fd].emask = 0;
811	fd_change (EV_A_ fd, EV_IOFDSET | 1);	1041	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
812	}	1042	}
813	}	1043	}
814		1044
815	/*****************************************************************************/	1045	/*****************************************************************************/
816		1046
…		…
832	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	1062	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
833	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	1063	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
834	#define UPHEAP_DONE(p,k) ((p) == (k))	1064	#define UPHEAP_DONE(p,k) ((p) == (k))
835		1065
836	/* away from the root */	1066	/* away from the root */
837	void inline_speed	1067	inline_speed void
838	downheap (ANHE *heap, int N, int k)	1068	downheap (ANHE *heap, int N, int k)
839	{	1069	{
840	ANHE he = heap [k];	1070	ANHE he = heap [k];
841	ANHE *E = heap + N + HEAP0;	1071	ANHE *E = heap + N + HEAP0;
842		1072
…		…
882	#define HEAP0 1	1112	#define HEAP0 1
883	#define HPARENT(k) ((k) >> 1)	1113	#define HPARENT(k) ((k) >> 1)
884	#define UPHEAP_DONE(p,k) (!(p))	1114	#define UPHEAP_DONE(p,k) (!(p))
885		1115
886	/* away from the root */	1116	/* away from the root */
887	void inline_speed	1117	inline_speed void
888	downheap (ANHE *heap, int N, int k)	1118	downheap (ANHE *heap, int N, int k)
889	{	1119	{
890	ANHE he = heap [k];	1120	ANHE he = heap [k];
891		1121
892	for (;;)	1122	for (;;)
893	{	1123	{
894	int c = k << 1;	1124	int c = k << 1;
895		1125
896	if (c > N + HEAP0 - 1)	1126	if (c >= N + HEAP0)
897	break;	1127	break;
898		1128
899	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1129	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
900	? 1 : 0;	1130	? 1 : 0;
901		1131
…		…
912	ev_active (ANHE_w (he)) = k;	1142	ev_active (ANHE_w (he)) = k;
913	}	1143	}
914	#endif	1144	#endif
915		1145
916	/* towards the root */	1146	/* towards the root */
917	void inline_speed	1147	inline_speed void
918	upheap (ANHE *heap, int k)	1148	upheap (ANHE *heap, int k)
919	{	1149	{
920	ANHE he = heap [k];	1150	ANHE he = heap [k];
921		1151
922	for (;;)	1152	for (;;)
…		…
933		1163
934	heap [k] = he;	1164	heap [k] = he;
935	ev_active (ANHE_w (he)) = k;	1165	ev_active (ANHE_w (he)) = k;
936	}	1166	}
937		1167
938	void inline_size	1168	/* move an element suitably so it is in a correct place */
		1169	inline_size void
939	adjustheap (ANHE *heap, int N, int k)	1170	adjustheap (ANHE *heap, int N, int k)
940	{	1171	{
941	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1172	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
942	upheap (heap, k);	1173	upheap (heap, k);
943	else	1174	else
944	downheap (heap, N, k);	1175	downheap (heap, N, k);
945	}	1176	}
946		1177
947	/* rebuild the heap: this function is used only once and executed rarely */	1178	/* rebuild the heap: this function is used only once and executed rarely */
948	void inline_size	1179	inline_size void
949	reheap (ANHE *heap, int N)	1180	reheap (ANHE *heap, int N)
950	{	1181	{
951	int i;	1182	int i;
952		1183
953	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1184	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
…		…
956	upheap (heap, i + HEAP0);	1187	upheap (heap, i + HEAP0);
957	}	1188	}
958		1189
959	/*****************************************************************************/	1190	/*****************************************************************************/
960		1191
		1192	/* associate signal watchers to a signal signal */
961	typedef struct	1193	typedef struct
962	{	1194	{
		1195	EV_ATOMIC_T pending;
		1196	#if EV_MULTIPLICITY
		1197	EV_P;
		1198	#endif
963	WL head;	1199	WL head;
964	EV_ATOMIC_T gotsig;
965	} ANSIG;	1200	} ANSIG;
966		1201
967	static ANSIG *signals;	1202	static ANSIG signals [EV_NSIG - 1];
968	static int signalmax;
969
970	static EV_ATOMIC_T gotsig;
971		1203
972	/*****************************************************************************/	1204	/*****************************************************************************/
973		1205
974	void inline_speed	1206	/* used to prepare libev internal fd's */
		1207	/* this is not fork-safe */
		1208	inline_speed void
975	fd_intern (int fd)	1209	fd_intern (int fd)
976	{	1210	{
977	#ifdef _WIN32	1211	#ifdef _WIN32
978	unsigned long arg = 1;	1212	unsigned long arg = 1;
979	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1213	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
980	#else	1214	#else
981	fcntl (fd, F_SETFD, FD_CLOEXEC);	1215	fcntl (fd, F_SETFD, FD_CLOEXEC);
982	fcntl (fd, F_SETFL, O_NONBLOCK);	1216	fcntl (fd, F_SETFL, O_NONBLOCK);
983	#endif	1217	#endif
984	}	1218	}
985		1219
986	static void noinline	1220	static void noinline
987	evpipe_init (EV_P)	1221	evpipe_init (EV_P)
988	{	1222	{
989	if (!ev_is_active (&pipeev))	1223	if (!ev_is_active (&pipe_w))
990	{	1224	{
991	#if EV_USE_EVENTFD	1225	#if EV_USE_EVENTFD
		1226	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1227	if (evfd < 0 && errno == EINVAL)
992	if ((evfd = eventfd (0, 0)) >= 0)	1228	evfd = eventfd (0, 0);
		1229
		1230	if (evfd >= 0)
993	{	1231	{
994	evpipe [0] = -1;	1232	evpipe [0] = -1;
995	fd_intern (evfd);	1233	fd_intern (evfd); /* doing it twice doesn't hurt */
996	ev_io_set (&pipeev, evfd, EV_READ);	1234	ev_io_set (&pipe_w, evfd, EV_READ);
997	}	1235	}
998	else	1236	else
999	#endif	1237	#endif
1000	{	1238	{
1001	while (pipe (evpipe))	1239	while (pipe (evpipe))
1002	syserr ("(libev) error creating signal/async pipe");	1240	ev_syserr ("(libev) error creating signal/async pipe");
1003		1241
1004	fd_intern (evpipe [0]);	1242	fd_intern (evpipe [0]);
1005	fd_intern (evpipe [1]);	1243	fd_intern (evpipe [1]);
1006	ev_io_set (&pipeev, evpipe [0], EV_READ);	1244	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1007	}	1245	}
1008		1246
1009	ev_io_start (EV_A_ &pipeev);	1247	ev_io_start (EV_A_ &pipe_w);
1010	ev_unref (EV_A); /* watcher should not keep loop alive */	1248	ev_unref (EV_A); /* watcher should not keep loop alive */
1011	}	1249	}
1012	}	1250	}
1013		1251
1014	void inline_size	1252	inline_size void
1015	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1253	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1016	{	1254	{
1017	if (!*flag)	1255	if (!*flag)
1018	{	1256	{
1019	int old_errno = errno; /* save errno because write might clobber it */	1257	int old_errno = errno; /* save errno because write might clobber it */
…		…
1032		1270
1033	errno = old_errno;	1271	errno = old_errno;
1034	}	1272	}
1035	}	1273	}
1036		1274
		1275	/* called whenever the libev signal pipe */
		1276	/* got some events (signal, async) */
1037	static void	1277	static void
1038	pipecb (EV_P_ ev_io *iow, int revents)	1278	pipecb (EV_P_ ev_io *iow, int revents)
1039	{	1279	{
		1280	int i;
		1281
1040	#if EV_USE_EVENTFD	1282	#if EV_USE_EVENTFD
1041	if (evfd >= 0)	1283	if (evfd >= 0)
1042	{	1284	{
1043	uint64_t counter;	1285	uint64_t counter;
1044	read (evfd, &counter, sizeof (uint64_t));	1286	read (evfd, &counter, sizeof (uint64_t));
…		…
1048	{	1290	{
1049	char dummy;	1291	char dummy;
1050	read (evpipe [0], &dummy, 1);	1292	read (evpipe [0], &dummy, 1);
1051	}	1293	}
1052		1294
1053	if (gotsig && ev_is_default_loop (EV_A))	1295	if (sig_pending)
1054	{	1296	{
1055	int signum;	1297	sig_pending = 0;
1056	gotsig = 0;
1057		1298
1058	for (signum = signalmax; signum--; )	1299	for (i = EV_NSIG - 1; i--; )
1059	if (signals [signum].gotsig)	1300	if (expect_false (signals [i].pending))
1060	ev_feed_signal_event (EV_A_ signum + 1);	1301	ev_feed_signal_event (EV_A_ i + 1);
1061	}	1302	}
1062		1303
1063	#if EV_ASYNC_ENABLE	1304	#if EV_ASYNC_ENABLE
1064	if (gotasync)	1305	if (async_pending)
1065	{	1306	{
1066	int i;	1307	async_pending = 0;
1067	gotasync = 0;
1068		1308
1069	for (i = asynccnt; i--; )	1309	for (i = asynccnt; i--; )
1070	if (asyncs [i]->sent)	1310	if (asyncs [i]->sent)
1071	{	1311	{
1072	asyncs [i]->sent = 0;	1312	asyncs [i]->sent = 0;
…		…
1080		1320
1081	static void	1321	static void
1082	ev_sighandler (int signum)	1322	ev_sighandler (int signum)
1083	{	1323	{
1084	#if EV_MULTIPLICITY	1324	#if EV_MULTIPLICITY
1085	struct ev_loop *loop = &default_loop_struct;	1325	EV_P = signals [signum - 1].loop;
1086	#endif	1326	#endif
1087		1327
1088	#if _WIN32	1328	#ifdef _WIN32
1089	signal (signum, ev_sighandler);	1329	signal (signum, ev_sighandler);
1090	#endif	1330	#endif
1091		1331
1092	signals [signum - 1].gotsig = 1;	1332	signals [signum - 1].pending = 1;
1093	evpipe_write (EV_A_ &gotsig);	1333	evpipe_write (EV_A_ &sig_pending);
1094	}	1334	}
1095		1335
1096	void noinline	1336	void noinline
1097	ev_feed_signal_event (EV_P_ int signum)	1337	ev_feed_signal_event (EV_P_ int signum)
1098	{	1338	{
1099	WL w;	1339	WL w;
1100		1340
		1341	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1342	return;
		1343
		1344	--signum;
		1345
1101	#if EV_MULTIPLICITY	1346	#if EV_MULTIPLICITY
1102	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1347	/* it is permissible to try to feed a signal to the wrong loop */
1103	#endif	1348	/* or, likely more useful, feeding a signal nobody is waiting for */
1104		1349
1105	--signum;	1350	if (expect_false (signals [signum].loop != EV_A))
1106
1107	if (signum < 0 || signum >= signalmax)
1108	return;	1351	return;
		1352	#endif
1109		1353
1110	signals [signum].gotsig = 0;	1354	signals [signum].pending = 0;
1111		1355
1112	for (w = signals [signum].head; w; w = w->next)	1356	for (w = signals [signum].head; w; w = w->next)
1113	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1357	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1114	}	1358	}
1115		1359
		1360	#if EV_USE_SIGNALFD
		1361	static void
		1362	sigfdcb (EV_P_ ev_io *iow, int revents)
		1363	{
		1364	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1365
		1366	for (;;)
		1367	{
		1368	ssize_t res = read (sigfd, si, sizeof (si));
		1369
		1370	/* not ISO-C, as res might be -1, but works with SuS */
		1371	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1372	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1373
		1374	if (res < (ssize_t)sizeof (si))
		1375	break;
		1376	}
		1377	}
		1378	#endif
		1379
1116	/*****************************************************************************/	1380	/*****************************************************************************/
1117		1381
1118	static WL childs [EV_PID_HASHSIZE];	1382	static WL childs [EV_PID_HASHSIZE];
1119		1383
1120	#ifndef _WIN32	1384	#ifndef _WIN32
…		…
1123		1387
1124	#ifndef WIFCONTINUED	1388	#ifndef WIFCONTINUED
1125	# define WIFCONTINUED(status) 0	1389	# define WIFCONTINUED(status) 0
1126	#endif	1390	#endif
1127		1391
1128	void inline_speed	1392	/* handle a single child status event */
		1393	inline_speed void
1129	child_reap (EV_P_ int chain, int pid, int status)	1394	child_reap (EV_P_ int chain, int pid, int status)
1130	{	1395	{
1131	ev_child *w;	1396	ev_child *w;
1132	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1397	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1133		1398
…		…
1146		1411
1147	#ifndef WCONTINUED	1412	#ifndef WCONTINUED
1148	# define WCONTINUED 0	1413	# define WCONTINUED 0
1149	#endif	1414	#endif
1150		1415
		1416	/* called on sigchld etc., calls waitpid */
1151	static void	1417	static void
1152	childcb (EV_P_ ev_signal *sw, int revents)	1418	childcb (EV_P_ ev_signal *sw, int revents)
1153	{	1419	{
1154	int pid, status;	1420	int pid, status;
1155		1421
…		…
1236	/* kqueue is borked on everything but netbsd apparently */	1502	/* kqueue is borked on everything but netbsd apparently */
1237	/* it usually doesn't work correctly on anything but sockets and pipes */	1503	/* it usually doesn't work correctly on anything but sockets and pipes */
1238	flags &= ~EVBACKEND_KQUEUE;	1504	flags &= ~EVBACKEND_KQUEUE;
1239	#endif	1505	#endif
1240	#ifdef __APPLE__	1506	#ifdef __APPLE__
1241	// flags &= ~EVBACKEND_KQUEUE; for documentation	1507	/* only select works correctly on that "unix-certified" platform */
1242	flags &= ~EVBACKEND_POLL;	1508	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1509	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1243	#endif	1510	#endif
1244		1511
1245	return flags;	1512	return flags;
1246	}	1513	}
1247		1514
…		…
1261	ev_backend (EV_P)	1528	ev_backend (EV_P)
1262	{	1529	{
1263	return backend;	1530	return backend;
1264	}	1531	}
1265		1532
		1533	#if EV_MINIMAL < 2
1266	unsigned int	1534	unsigned int
1267	ev_loop_count (EV_P)	1535	ev_loop_count (EV_P)
1268	{	1536	{
1269	return loop_count;	1537	return loop_count;
1270	}	1538	}
1271		1539
		1540	unsigned int
		1541	ev_loop_depth (EV_P)
		1542	{
		1543	return loop_depth;
		1544	}
		1545
1272	void	1546	void
1273	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1547	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1274	{	1548	{
1275	io_blocktime = interval;	1549	io_blocktime = interval;
1276	}	1550	}
…		…
1279	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1553	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1280	{	1554	{
1281	timeout_blocktime = interval;	1555	timeout_blocktime = interval;
1282	}	1556	}
1283		1557
		1558	void
		1559	ev_set_userdata (EV_P_ void *data)
		1560	{
		1561	userdata = data;
		1562	}
		1563
		1564	void *
		1565	ev_userdata (EV_P)
		1566	{
		1567	return userdata;
		1568	}
		1569
		1570	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1571	{
		1572	invoke_cb = invoke_pending_cb;
		1573	}
		1574
		1575	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1576	{
		1577	release_cb = release;
		1578	acquire_cb = acquire;
		1579	}
		1580	#endif
		1581
		1582	/* initialise a loop structure, must be zero-initialised */
1284	static void noinline	1583	static void noinline
1285	loop_init (EV_P_ unsigned int flags)	1584	loop_init (EV_P_ unsigned int flags)
1286	{	1585	{
1287	if (!backend)	1586	if (!backend)
1288	{	1587	{
		1588	#if EV_USE_REALTIME
		1589	if (!have_realtime)
		1590	{
		1591	struct timespec ts;
		1592
		1593	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1594	have_realtime = 1;
		1595	}
		1596	#endif
		1597
1289	#if EV_USE_MONOTONIC	1598	#if EV_USE_MONOTONIC
		1599	if (!have_monotonic)
1290	{	1600	{
1291	struct timespec ts;	1601	struct timespec ts;
		1602
1292	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1603	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1293	have_monotonic = 1;	1604	have_monotonic = 1;
1294	}	1605	}
1295	#endif	1606	#endif
		1607
		1608	/* pid check not overridable via env */
		1609	#ifndef _WIN32
		1610	if (flags & EVFLAG_FORKCHECK)
		1611	curpid = getpid ();
		1612	#endif
		1613
		1614	if (!(flags & EVFLAG_NOENV)
		1615	&& !enable_secure ()
		1616	&& getenv ("LIBEV_FLAGS"))
		1617	flags = atoi (getenv ("LIBEV_FLAGS"));
1296		1618
1297	ev_rt_now = ev_time ();	1619	ev_rt_now = ev_time ();
1298	mn_now = get_clock ();	1620	mn_now = get_clock ();
1299	now_floor = mn_now;	1621	now_floor = mn_now;
1300	rtmn_diff = ev_rt_now - mn_now;	1622	rtmn_diff = ev_rt_now - mn_now;
		1623	#if EV_MINIMAL < 2
		1624	invoke_cb = ev_invoke_pending;
		1625	#endif
1301		1626
1302	io_blocktime = 0.;	1627	io_blocktime = 0.;
1303	timeout_blocktime = 0.;	1628	timeout_blocktime = 0.;
1304	backend = 0;	1629	backend = 0;
1305	backend_fd = -1;	1630	backend_fd = -1;
1306	gotasync = 0;	1631	sig_pending = 0;
		1632	#if EV_ASYNC_ENABLE
		1633	async_pending = 0;
		1634	#endif
1307	#if EV_USE_INOTIFY	1635	#if EV_USE_INOTIFY
1308	fs_fd = -2;	1636	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1309	#endif	1637	#endif
1310		1638	#if EV_USE_SIGNALFD
1311	/* pid check not overridable via env */	1639	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1312	#ifndef _WIN32
1313	if (flags & EVFLAG_FORKCHECK)
1314	curpid = getpid ();
1315	#endif	1640	#endif
1316
1317	if (!(flags & EVFLAG_NOENV)
1318	&& !enable_secure ()
1319	&& getenv ("LIBEV_FLAGS"))
1320	flags = atoi (getenv ("LIBEV_FLAGS"));
1321		1641
1322	if (!(flags & 0x0000ffffU))	1642	if (!(flags & 0x0000ffffU))
1323	flags |= ev_recommended_backends ();	1643	flags |= ev_recommended_backends ();
1324		1644
1325	#if EV_USE_PORT	1645	#if EV_USE_PORT
…		…
1336	#endif	1656	#endif
1337	#if EV_USE_SELECT	1657	#if EV_USE_SELECT
1338	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1658	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1339	#endif	1659	#endif
1340		1660
		1661	ev_prepare_init (&pending_w, pendingcb);
		1662
1341	ev_init (&pipeev, pipecb);	1663	ev_init (&pipe_w, pipecb);
1342	ev_set_priority (&pipeev, EV_MAXPRI);	1664	ev_set_priority (&pipe_w, EV_MAXPRI);
1343	}	1665	}
1344	}	1666	}
1345		1667
		1668	/* free up a loop structure */
1346	static void noinline	1669	static void noinline
1347	loop_destroy (EV_P)	1670	loop_destroy (EV_P)
1348	{	1671	{
1349	int i;	1672	int i;
1350		1673
1351	if (ev_is_active (&pipeev))	1674	if (ev_is_active (&pipe_w))
1352	{	1675	{
1353	ev_ref (EV_A); /* signal watcher */	1676	/*ev_ref (EV_A);*/
1354	ev_io_stop (EV_A_ &pipeev);	1677	/*ev_io_stop (EV_A_ &pipe_w);*/
1355		1678
1356	#if EV_USE_EVENTFD	1679	#if EV_USE_EVENTFD
1357	if (evfd >= 0)	1680	if (evfd >= 0)
1358	close (evfd);	1681	close (evfd);
1359	#endif	1682	#endif
1360		1683
1361	if (evpipe [0] >= 0)	1684	if (evpipe [0] >= 0)
1362	{	1685	{
1363	close (evpipe [0]);	1686	EV_WIN32_CLOSE_FD (evpipe [0]);
1364	close (evpipe [1]);	1687	EV_WIN32_CLOSE_FD (evpipe [1]);
1365	}	1688	}
1366	}	1689	}
		1690
		1691	#if EV_USE_SIGNALFD
		1692	if (ev_is_active (&sigfd_w))
		1693	close (sigfd);
		1694	#endif
1367		1695
1368	#if EV_USE_INOTIFY	1696	#if EV_USE_INOTIFY
1369	if (fs_fd >= 0)	1697	if (fs_fd >= 0)
1370	close (fs_fd);	1698	close (fs_fd);
1371	#endif	1699	#endif
…		…
1395	#if EV_IDLE_ENABLE	1723	#if EV_IDLE_ENABLE
1396	array_free (idle, [i]);	1724	array_free (idle, [i]);
1397	#endif	1725	#endif
1398	}	1726	}
1399		1727
1400	ev_free (anfds); anfdmax = 0;	1728	ev_free (anfds); anfds = 0; anfdmax = 0;
1401		1729
1402	/* have to use the microsoft-never-gets-it-right macro */	1730	/* have to use the microsoft-never-gets-it-right macro */
		1731	array_free (rfeed, EMPTY);
1403	array_free (fdchange, EMPTY);	1732	array_free (fdchange, EMPTY);
1404	array_free (timer, EMPTY);	1733	array_free (timer, EMPTY);
1405	#if EV_PERIODIC_ENABLE	1734	#if EV_PERIODIC_ENABLE
1406	array_free (periodic, EMPTY);	1735	array_free (periodic, EMPTY);
1407	#endif	1736	#endif
…		…
1416		1745
1417	backend = 0;	1746	backend = 0;
1418	}	1747	}
1419		1748
1420	#if EV_USE_INOTIFY	1749	#if EV_USE_INOTIFY
1421	void inline_size infy_fork (EV_P);	1750	inline_size void infy_fork (EV_P);
1422	#endif	1751	#endif
1423		1752
1424	void inline_size	1753	inline_size void
1425	loop_fork (EV_P)	1754	loop_fork (EV_P)
1426	{	1755	{
1427	#if EV_USE_PORT	1756	#if EV_USE_PORT
1428	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1757	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1429	#endif	1758	#endif
…		…
1435	#endif	1764	#endif
1436	#if EV_USE_INOTIFY	1765	#if EV_USE_INOTIFY
1437	infy_fork (EV_A);	1766	infy_fork (EV_A);
1438	#endif	1767	#endif
1439		1768
1440	if (ev_is_active (&pipeev))	1769	if (ev_is_active (&pipe_w))
1441	{	1770	{
1442	/* this "locks" the handlers against writing to the pipe */	1771	/* this "locks" the handlers against writing to the pipe */
1443	/* while we modify the fd vars */	1772	/* while we modify the fd vars */
1444	gotsig = 1;	1773	sig_pending = 1;
1445	#if EV_ASYNC_ENABLE	1774	#if EV_ASYNC_ENABLE
1446	gotasync = 1;	1775	async_pending = 1;
1447	#endif	1776	#endif
1448		1777
1449	ev_ref (EV_A);	1778	ev_ref (EV_A);
1450	ev_io_stop (EV_A_ &pipeev);	1779	ev_io_stop (EV_A_ &pipe_w);
1451		1780
1452	#if EV_USE_EVENTFD	1781	#if EV_USE_EVENTFD
1453	if (evfd >= 0)	1782	if (evfd >= 0)
1454	close (evfd);	1783	close (evfd);
1455	#endif	1784	#endif
1456		1785
1457	if (evpipe [0] >= 0)	1786	if (evpipe [0] >= 0)
1458	{	1787	{
1459	close (evpipe [0]);	1788	EV_WIN32_CLOSE_FD (evpipe [0]);
1460	close (evpipe [1]);	1789	EV_WIN32_CLOSE_FD (evpipe [1]);
1461	}	1790	}
1462		1791
1463	evpipe_init (EV_A);	1792	evpipe_init (EV_A);
1464	/* now iterate over everything, in case we missed something */	1793	/* now iterate over everything, in case we missed something */
1465	pipecb (EV_A_ &pipeev, EV_READ);	1794	pipecb (EV_A_ &pipe_w, EV_READ);
1466	}	1795	}
1467		1796
1468	postfork = 0;	1797	postfork = 0;
1469	}	1798	}
1470		1799
1471	#if EV_MULTIPLICITY	1800	#if EV_MULTIPLICITY
1472		1801
1473	struct ev_loop *	1802	struct ev_loop *
1474	ev_loop_new (unsigned int flags)	1803	ev_loop_new (unsigned int flags)
1475	{	1804	{
1476	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1805	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1477		1806
1478	memset (loop, 0, sizeof (struct ev_loop));	1807	memset (EV_A, 0, sizeof (struct ev_loop));
1479
1480	loop_init (EV_A_ flags);	1808	loop_init (EV_A_ flags);
1481		1809
1482	if (ev_backend (EV_A))	1810	if (ev_backend (EV_A))
1483	return loop;	1811	return EV_A;
1484		1812
1485	return 0;	1813	return 0;
1486	}	1814	}
1487		1815
1488	void	1816	void
…		…
1495	void	1823	void
1496	ev_loop_fork (EV_P)	1824	ev_loop_fork (EV_P)
1497	{	1825	{
1498	postfork = 1; /* must be in line with ev_default_fork */	1826	postfork = 1; /* must be in line with ev_default_fork */
1499	}	1827	}
		1828	#endif /* multiplicity */
1500		1829
1501	#if EV_VERIFY	1830	#if EV_VERIFY
1502	static void noinline	1831	static void noinline
1503	verify_watcher (EV_P_ W w)	1832	verify_watcher (EV_P_ W w)
1504	{	1833	{
1505	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	1834	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1506		1835
1507	if (w->pending)	1836	if (w->pending)
1508	assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	1837	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1509	}	1838	}
1510		1839
1511	static void noinline	1840	static void noinline
1512	verify_heap (EV_P_ ANHE *heap, int N)	1841	verify_heap (EV_P_ ANHE *heap, int N)
1513	{	1842	{
1514	int i;	1843	int i;
1515		1844
1516	for (i = HEAP0; i < N + HEAP0; ++i)	1845	for (i = HEAP0; i < N + HEAP0; ++i)
1517	{	1846	{
1518	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));	1847	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1519	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));	1848	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1520	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));	1849	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1521		1850
1522	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	1851	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1523	}	1852	}
1524	}	1853	}
1525		1854
1526	static void noinline	1855	static void noinline
1527	array_verify (EV_P_ W *ws, int cnt)	1856	array_verify (EV_P_ W *ws, int cnt)
1528	{	1857	{
1529	while (cnt--)	1858	while (cnt--)
1530	{	1859	{
1531	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1860	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1532	verify_watcher (EV_A_ ws [cnt]);	1861	verify_watcher (EV_A_ ws [cnt]);
1533	}	1862	}
1534	}	1863	}
1535	#endif	1864	#endif
1536		1865
		1866	#if EV_MINIMAL < 2
1537	void	1867	void
1538	ev_loop_verify (EV_P)	1868	ev_loop_verify (EV_P)
1539	{	1869	{
1540	#if EV_VERIFY	1870	#if EV_VERIFY
1541	int i;	1871	int i;
…		…
1543		1873
1544	assert (activecnt >= -1);	1874	assert (activecnt >= -1);
1545		1875
1546	assert (fdchangemax >= fdchangecnt);	1876	assert (fdchangemax >= fdchangecnt);
1547	for (i = 0; i < fdchangecnt; ++i)	1877	for (i = 0; i < fdchangecnt; ++i)
1548	assert (("negative fd in fdchanges", fdchanges [i] >= 0));	1878	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1549		1879
1550	assert (anfdmax >= 0);	1880	assert (anfdmax >= 0);
1551	for (i = 0; i < anfdmax; ++i)	1881	for (i = 0; i < anfdmax; ++i)
1552	for (w = anfds [i].head; w; w = w->next)	1882	for (w = anfds [i].head; w; w = w->next)
1553	{	1883	{
1554	verify_watcher (EV_A_ (W)w);	1884	verify_watcher (EV_A_ (W)w);
1555	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));	1885	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1556	assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));	1886	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1557	}	1887	}
1558		1888
1559	assert (timermax >= timercnt);	1889	assert (timermax >= timercnt);
1560	verify_heap (EV_A_ timers, timercnt);	1890	verify_heap (EV_A_ timers, timercnt);
1561		1891
…		…
1590	assert (checkmax >= checkcnt);	1920	assert (checkmax >= checkcnt);
1591	array_verify (EV_A_ (W *)checks, checkcnt);	1921	array_verify (EV_A_ (W *)checks, checkcnt);
1592		1922
1593	# if 0	1923	# if 0
1594	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1924	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1595	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1925	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1596	# endif
1597	#endif	1926	# endif
		1927	#endif
1598	}	1928	}
1599		1929	#endif
1600	#endif /* multiplicity */
1601		1930
1602	#if EV_MULTIPLICITY	1931	#if EV_MULTIPLICITY
1603	struct ev_loop *	1932	struct ev_loop *
1604	ev_default_loop_init (unsigned int flags)	1933	ev_default_loop_init (unsigned int flags)
1605	#else	1934	#else
…		…
1608	#endif	1937	#endif
1609	{	1938	{
1610	if (!ev_default_loop_ptr)	1939	if (!ev_default_loop_ptr)
1611	{	1940	{
1612	#if EV_MULTIPLICITY	1941	#if EV_MULTIPLICITY
1613	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1942	EV_P = ev_default_loop_ptr = &default_loop_struct;
1614	#else	1943	#else
1615	ev_default_loop_ptr = 1;	1944	ev_default_loop_ptr = 1;
1616	#endif	1945	#endif
1617		1946
1618	loop_init (EV_A_ flags);	1947	loop_init (EV_A_ flags);
…		…
1635		1964
1636	void	1965	void
1637	ev_default_destroy (void)	1966	ev_default_destroy (void)
1638	{	1967	{
1639	#if EV_MULTIPLICITY	1968	#if EV_MULTIPLICITY
1640	struct ev_loop *loop = ev_default_loop_ptr;	1969	EV_P = ev_default_loop_ptr;
1641	#endif	1970	#endif
1642		1971
1643	ev_default_loop_ptr = 0;	1972	ev_default_loop_ptr = 0;
1644		1973
1645	#ifndef _WIN32	1974	#ifndef _WIN32
…		…
1652		1981
1653	void	1982	void
1654	ev_default_fork (void)	1983	ev_default_fork (void)
1655	{	1984	{
1656	#if EV_MULTIPLICITY	1985	#if EV_MULTIPLICITY
1657	struct ev_loop *loop = ev_default_loop_ptr;	1986	EV_P = ev_default_loop_ptr;
1658	#endif	1987	#endif
1659		1988
1660	if (backend)
1661	postfork = 1; /* must be in line with ev_loop_fork */	1989	postfork = 1; /* must be in line with ev_loop_fork */
1662	}	1990	}
1663		1991
1664	/*****************************************************************************/	1992	/*****************************************************************************/
1665		1993
1666	void	1994	void
1667	ev_invoke (EV_P_ void *w, int revents)	1995	ev_invoke (EV_P_ void *w, int revents)
1668	{	1996	{
1669	EV_CB_INVOKE ((W)w, revents);	1997	EV_CB_INVOKE ((W)w, revents);
1670	}	1998	}
1671		1999
1672	void inline_speed	2000	unsigned int
1673	call_pending (EV_P)	2001	ev_pending_count (EV_P)
		2002	{
		2003	int pri;
		2004	unsigned int count = 0;
		2005
		2006	for (pri = NUMPRI; pri--; )
		2007	count += pendingcnt [pri];
		2008
		2009	return count;
		2010	}
		2011
		2012	void noinline
		2013	ev_invoke_pending (EV_P)
1674	{	2014	{
1675	int pri;	2015	int pri;
1676		2016
1677	for (pri = NUMPRI; pri--; )	2017	for (pri = NUMPRI; pri--; )
1678	while (pendingcnt [pri])	2018	while (pendingcnt [pri])
1679	{	2019	{
1680	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	2020	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1681		2021
1682	if (expect_true (p->w))
1683	{
1684	/*assert (("non-pending watcher on pending list", p->w->pending));*/	2022	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		2023	/* ^ this is no longer true, as pending_w could be here */
1685		2024
1686	p->w->pending = 0;	2025	p->w->pending = 0;
1687	EV_CB_INVOKE (p->w, p->events);	2026	EV_CB_INVOKE (p->w, p->events);
1688	EV_FREQUENT_CHECK;	2027	EV_FREQUENT_CHECK;
1689	}
1690	}	2028	}
1691	}	2029	}
1692		2030
1693	#if EV_IDLE_ENABLE	2031	#if EV_IDLE_ENABLE
1694	void inline_size	2032	/* make idle watchers pending. this handles the "call-idle */
		2033	/* only when higher priorities are idle" logic */
		2034	inline_size void
1695	idle_reify (EV_P)	2035	idle_reify (EV_P)
1696	{	2036	{
1697	if (expect_false (idleall))	2037	if (expect_false (idleall))
1698	{	2038	{
1699	int pri;	2039	int pri;
…		…
1711	}	2051	}
1712	}	2052	}
1713	}	2053	}
1714	#endif	2054	#endif
1715		2055
1716	void inline_size	2056	/* make timers pending */
		2057	inline_size void
1717	timers_reify (EV_P)	2058	timers_reify (EV_P)
1718	{	2059	{
1719	EV_FREQUENT_CHECK;	2060	EV_FREQUENT_CHECK;
1720		2061
1721	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	2062	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1722	{	2063	{
1723	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	2064	do
1724
1725	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1726
1727	/* first reschedule or stop timer */
1728	if (w->repeat)
1729	{	2065	{
		2066	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2067
		2068	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2069
		2070	/* first reschedule or stop timer */
		2071	if (w->repeat)
		2072	{
1730	ev_at (w) += w->repeat;	2073	ev_at (w) += w->repeat;
1731	if (ev_at (w) < mn_now)	2074	if (ev_at (w) < mn_now)
1732	ev_at (w) = mn_now;	2075	ev_at (w) = mn_now;
1733		2076
1734	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	2077	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1735		2078
1736	ANHE_at_cache (timers [HEAP0]);	2079	ANHE_at_cache (timers [HEAP0]);
1737	downheap (timers, timercnt, HEAP0);	2080	downheap (timers, timercnt, HEAP0);
		2081	}
		2082	else
		2083	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2084
		2085	EV_FREQUENT_CHECK;
		2086	feed_reverse (EV_A_ (W)w);
1738	}	2087	}
1739	else	2088	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1740	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1741		2089
1742	EV_FREQUENT_CHECK;
1743	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	2090	feed_reverse_done (EV_A_ EV_TIMEOUT);
1744	}	2091	}
1745	}	2092	}
1746		2093
1747	#if EV_PERIODIC_ENABLE	2094	#if EV_PERIODIC_ENABLE
1748	void inline_size	2095	/* make periodics pending */
		2096	inline_size void
1749	periodics_reify (EV_P)	2097	periodics_reify (EV_P)
1750	{	2098	{
1751	EV_FREQUENT_CHECK;	2099	EV_FREQUENT_CHECK;
1752		2100
1753	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	2101	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1754	{	2102	{
1755	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	2103	int feed_count = 0;
1756		2104
1757	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	2105	do
1758
1759	/* first reschedule or stop timer */
1760	if (w->reschedule_cb)
1761	{	2106	{
		2107	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2108
		2109	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2110
		2111	/* first reschedule or stop timer */
		2112	if (w->reschedule_cb)
		2113	{
1762	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2114	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1763		2115
1764	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	2116	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1765		2117
1766	ANHE_at_cache (periodics [HEAP0]);	2118	ANHE_at_cache (periodics [HEAP0]);
1767	downheap (periodics, periodiccnt, HEAP0);	2119	downheap (periodics, periodiccnt, HEAP0);
		2120	}
		2121	else if (w->interval)
		2122	{
		2123	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2124	/* if next trigger time is not sufficiently in the future, put it there */
		2125	/* this might happen because of floating point inexactness */
		2126	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2127	{
		2128	ev_at (w) += w->interval;
		2129
		2130	/* if interval is unreasonably low we might still have a time in the past */
		2131	/* so correct this. this will make the periodic very inexact, but the user */
		2132	/* has effectively asked to get triggered more often than possible */
		2133	if (ev_at (w) < ev_rt_now)
		2134	ev_at (w) = ev_rt_now;
		2135	}
		2136
		2137	ANHE_at_cache (periodics [HEAP0]);
		2138	downheap (periodics, periodiccnt, HEAP0);
		2139	}
		2140	else
		2141	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2142
		2143	EV_FREQUENT_CHECK;
		2144	feed_reverse (EV_A_ (W)w);
1768	}	2145	}
1769	else if (w->interval)	2146	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1770	{
1771	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1772	/* if next trigger time is not sufficiently in the future, put it there */
1773	/* this might happen because of floating point inexactness */
1774	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1775	{
1776	ev_at (w) += w->interval;
1777		2147
1778	/* if interval is unreasonably low we might still have a time in the past */
1779	/* so correct this. this will make the periodic very inexact, but the user */
1780	/* has effectively asked to get triggered more often than possible */
1781	if (ev_at (w) < ev_rt_now)
1782	ev_at (w) = ev_rt_now;
1783	}
1784
1785	ANHE_at_cache (periodics [HEAP0]);
1786	downheap (periodics, periodiccnt, HEAP0);
1787	}
1788	else
1789	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1790
1791	EV_FREQUENT_CHECK;
1792	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	2148	feed_reverse_done (EV_A_ EV_PERIODIC);
1793	}	2149	}
1794	}	2150	}
1795		2151
		2152	/* simply recalculate all periodics */
		2153	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1796	static void noinline	2154	static void noinline
1797	periodics_reschedule (EV_P)	2155	periodics_reschedule (EV_P)
1798	{	2156	{
1799	int i;	2157	int i;
1800		2158
…		…
1813		2171
1814	reheap (periodics, periodiccnt);	2172	reheap (periodics, periodiccnt);
1815	}	2173	}
1816	#endif	2174	#endif
1817		2175
1818	void inline_speed	2176	/* adjust all timers by a given offset */
		2177	static void noinline
		2178	timers_reschedule (EV_P_ ev_tstamp adjust)
		2179	{
		2180	int i;
		2181
		2182	for (i = 0; i < timercnt; ++i)
		2183	{
		2184	ANHE *he = timers + i + HEAP0;
		2185	ANHE_w (*he)->at += adjust;
		2186	ANHE_at_cache (*he);
		2187	}
		2188	}
		2189
		2190	/* fetch new monotonic and realtime times from the kernel */
		2191	/* also detect if there was a timejump, and act accordingly */
		2192	inline_speed void
1819	time_update (EV_P_ ev_tstamp max_block)	2193	time_update (EV_P_ ev_tstamp max_block)
1820	{	2194	{
1821	int i;
1822
1823	#if EV_USE_MONOTONIC	2195	#if EV_USE_MONOTONIC
1824	if (expect_true (have_monotonic))	2196	if (expect_true (have_monotonic))
1825	{	2197	{
		2198	int i;
1826	ev_tstamp odiff = rtmn_diff;	2199	ev_tstamp odiff = rtmn_diff;
1827		2200
1828	mn_now = get_clock ();	2201	mn_now = get_clock ();
1829		2202
1830	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2203	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1856	ev_rt_now = ev_time ();	2229	ev_rt_now = ev_time ();
1857	mn_now = get_clock ();	2230	mn_now = get_clock ();
1858	now_floor = mn_now;	2231	now_floor = mn_now;
1859	}	2232	}
1860		2233
		2234	/* no timer adjustment, as the monotonic clock doesn't jump */
		2235	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1861	# if EV_PERIODIC_ENABLE	2236	# if EV_PERIODIC_ENABLE
1862	periodics_reschedule (EV_A);	2237	periodics_reschedule (EV_A);
1863	# endif	2238	# endif
1864	/* no timer adjustment, as the monotonic clock doesn't jump */
1865	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1866	}	2239	}
1867	else	2240	else
1868	#endif	2241	#endif
1869	{	2242	{
1870	ev_rt_now = ev_time ();	2243	ev_rt_now = ev_time ();
1871		2244
1872	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2245	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1873	{	2246	{
		2247	/* adjust timers. this is easy, as the offset is the same for all of them */
		2248	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1874	#if EV_PERIODIC_ENABLE	2249	#if EV_PERIODIC_ENABLE
1875	periodics_reschedule (EV_A);	2250	periodics_reschedule (EV_A);
1876	#endif	2251	#endif
1877	/* adjust timers. this is easy, as the offset is the same for all of them */
1878	for (i = 0; i < timercnt; ++i)
1879	{
1880	ANHE *he = timers + i + HEAP0;
1881	ANHE_w (*he)->at += ev_rt_now - mn_now;
1882	ANHE_at_cache (*he);
1883	}
1884	}	2252	}
1885		2253
1886	mn_now = ev_rt_now;	2254	mn_now = ev_rt_now;
1887	}	2255	}
1888	}	2256	}
1889		2257
1890	void	2258	void
1891	ev_ref (EV_P)
1892	{
1893	++activecnt;
1894	}
1895
1896	void
1897	ev_unref (EV_P)
1898	{
1899	--activecnt;
1900	}
1901
1902	void
1903	ev_now_update (EV_P)
1904	{
1905	time_update (EV_A_ 1e100);
1906	}
1907
1908	static int loop_done;
1909
1910	void
1911	ev_loop (EV_P_ int flags)	2259	ev_loop (EV_P_ int flags)
1912	{	2260	{
		2261	#if EV_MINIMAL < 2
		2262	++loop_depth;
		2263	#endif
		2264
		2265	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2266
1913	loop_done = EVUNLOOP_CANCEL;	2267	loop_done = EVUNLOOP_CANCEL;
1914		2268
1915	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2269	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1916		2270
1917	do	2271	do
1918	{	2272	{
1919	#if EV_VERIFY >= 2	2273	#if EV_VERIFY >= 2
1920	ev_loop_verify (EV_A);	2274	ev_loop_verify (EV_A);
…		…
1933	/* we might have forked, so queue fork handlers */	2287	/* we might have forked, so queue fork handlers */
1934	if (expect_false (postfork))	2288	if (expect_false (postfork))
1935	if (forkcnt)	2289	if (forkcnt)
1936	{	2290	{
1937	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2291	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1938	call_pending (EV_A);	2292	EV_INVOKE_PENDING;
1939	}	2293	}
1940	#endif	2294	#endif
1941		2295
1942	/* queue prepare watchers (and execute them) */	2296	/* queue prepare watchers (and execute them) */
1943	if (expect_false (preparecnt))	2297	if (expect_false (preparecnt))
1944	{	2298	{
1945	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2299	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1946	call_pending (EV_A);	2300	EV_INVOKE_PENDING;
1947	}	2301	}
1948		2302
1949	if (expect_false (!activecnt))	2303	if (expect_false (loop_done))
1950	break;	2304	break;
1951		2305
1952	/* we might have forked, so reify kernel state if necessary */	2306	/* we might have forked, so reify kernel state if necessary */
1953	if (expect_false (postfork))	2307	if (expect_false (postfork))
1954	loop_fork (EV_A);	2308	loop_fork (EV_A);
…		…
1961	ev_tstamp waittime = 0.;	2315	ev_tstamp waittime = 0.;
1962	ev_tstamp sleeptime = 0.;	2316	ev_tstamp sleeptime = 0.;
1963		2317
1964	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2318	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1965	{	2319	{
		2320	/* remember old timestamp for io_blocktime calculation */
		2321	ev_tstamp prev_mn_now = mn_now;
		2322
1966	/* update time to cancel out callback processing overhead */	2323	/* update time to cancel out callback processing overhead */
1967	time_update (EV_A_ 1e100);	2324	time_update (EV_A_ 1e100);
1968		2325
1969	waittime = MAX_BLOCKTIME;	2326	waittime = MAX_BLOCKTIME;
1970		2327
…		…
1980	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2337	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1981	if (waittime > to) waittime = to;	2338	if (waittime > to) waittime = to;
1982	}	2339	}
1983	#endif	2340	#endif
1984		2341
		2342	/* don't let timeouts decrease the waittime below timeout_blocktime */
1985	if (expect_false (waittime < timeout_blocktime))	2343	if (expect_false (waittime < timeout_blocktime))
1986	waittime = timeout_blocktime;	2344	waittime = timeout_blocktime;
1987		2345
1988	sleeptime = waittime - backend_fudge;	2346	/* extra check because io_blocktime is commonly 0 */
1989
1990	if (expect_true (sleeptime > io_blocktime))	2347	if (expect_false (io_blocktime))
1991	sleeptime = io_blocktime;
1992
1993	if (sleeptime)
1994	{	2348	{
		2349	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2350
		2351	if (sleeptime > waittime - backend_fudge)
		2352	sleeptime = waittime - backend_fudge;
		2353
		2354	if (expect_true (sleeptime > 0.))
		2355	{
1995	ev_sleep (sleeptime);	2356	ev_sleep (sleeptime);
1996	waittime -= sleeptime;	2357	waittime -= sleeptime;
		2358	}
1997	}	2359	}
1998	}	2360	}
1999		2361
		2362	#if EV_MINIMAL < 2
2000	++loop_count;	2363	++loop_count;
		2364	#endif
		2365	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2001	backend_poll (EV_A_ waittime);	2366	backend_poll (EV_A_ waittime);
		2367	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2002		2368
2003	/* update ev_rt_now, do magic */	2369	/* update ev_rt_now, do magic */
2004	time_update (EV_A_ waittime + sleeptime);	2370	time_update (EV_A_ waittime + sleeptime);
2005	}	2371	}
2006		2372
…		…
2017		2383
2018	/* queue check watchers, to be executed first */	2384	/* queue check watchers, to be executed first */
2019	if (expect_false (checkcnt))	2385	if (expect_false (checkcnt))
2020	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2386	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2021		2387
2022	call_pending (EV_A);	2388	EV_INVOKE_PENDING;
2023	}	2389	}
2024	while (expect_true (	2390	while (expect_true (
2025	activecnt	2391	activecnt
2026	&& !loop_done	2392	&& !loop_done
2027	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2393	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2028	));	2394	));
2029		2395
2030	if (loop_done == EVUNLOOP_ONE)	2396	if (loop_done == EVUNLOOP_ONE)
2031	loop_done = EVUNLOOP_CANCEL;	2397	loop_done = EVUNLOOP_CANCEL;
		2398
		2399	#if EV_MINIMAL < 2
		2400	--loop_depth;
		2401	#endif
2032	}	2402	}
2033		2403
2034	void	2404	void
2035	ev_unloop (EV_P_ int how)	2405	ev_unloop (EV_P_ int how)
2036	{	2406	{
2037	loop_done = how;	2407	loop_done = how;
2038	}	2408	}
2039		2409
		2410	void
		2411	ev_ref (EV_P)
		2412	{
		2413	++activecnt;
		2414	}
		2415
		2416	void
		2417	ev_unref (EV_P)
		2418	{
		2419	--activecnt;
		2420	}
		2421
		2422	void
		2423	ev_now_update (EV_P)
		2424	{
		2425	time_update (EV_A_ 1e100);
		2426	}
		2427
		2428	void
		2429	ev_suspend (EV_P)
		2430	{
		2431	ev_now_update (EV_A);
		2432	}
		2433
		2434	void
		2435	ev_resume (EV_P)
		2436	{
		2437	ev_tstamp mn_prev = mn_now;
		2438
		2439	ev_now_update (EV_A);
		2440	timers_reschedule (EV_A_ mn_now - mn_prev);
		2441	#if EV_PERIODIC_ENABLE
		2442	/* TODO: really do this? */
		2443	periodics_reschedule (EV_A);
		2444	#endif
		2445	}
		2446
2040	/*****************************************************************************/	2447	/*****************************************************************************/
		2448	/* singly-linked list management, used when the expected list length is short */
2041		2449
2042	void inline_size	2450	inline_size void
2043	wlist_add (WL *head, WL elem)	2451	wlist_add (WL *head, WL elem)
2044	{	2452	{
2045	elem->next = *head;	2453	elem->next = *head;
2046	*head = elem;	2454	*head = elem;
2047	}	2455	}
2048		2456
2049	void inline_size	2457	inline_size void
2050	wlist_del (WL *head, WL elem)	2458	wlist_del (WL *head, WL elem)
2051	{	2459	{
2052	while (*head)	2460	while (*head)
2053	{	2461	{
2054	if (*head == elem)	2462	if (expect_true (*head == elem))
2055	{	2463	{
2056	*head = elem->next;	2464	*head = elem->next;
2057	return;	2465	break;
2058	}	2466	}
2059		2467
2060	head = &(*head)->next;	2468	head = &(*head)->next;
2061	}	2469	}
2062	}	2470	}
2063		2471
2064	void inline_speed	2472	/* internal, faster, version of ev_clear_pending */
		2473	inline_speed void
2065	clear_pending (EV_P_ W w)	2474	clear_pending (EV_P_ W w)
2066	{	2475	{
2067	if (w->pending)	2476	if (w->pending)
2068	{	2477	{
2069	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2478	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2070	w->pending = 0;	2479	w->pending = 0;
2071	}	2480	}
2072	}	2481	}
2073		2482
2074	int	2483	int
…		…
2078	int pending = w_->pending;	2487	int pending = w_->pending;
2079		2488
2080	if (expect_true (pending))	2489	if (expect_true (pending))
2081	{	2490	{
2082	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2491	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2492	p->w = (W)&pending_w;
2083	w_->pending = 0;	2493	w_->pending = 0;
2084	p->w = 0;
2085	return p->events;	2494	return p->events;
2086	}	2495	}
2087	else	2496	else
2088	return 0;	2497	return 0;
2089	}	2498	}
2090		2499
2091	void inline_size	2500	inline_size void
2092	pri_adjust (EV_P_ W w)	2501	pri_adjust (EV_P_ W w)
2093	{	2502	{
2094	int pri = w->priority;	2503	int pri = ev_priority (w);
2095	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2504	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2096	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2505	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2097	w->priority = pri;	2506	ev_set_priority (w, pri);
2098	}	2507	}
2099		2508
2100	void inline_speed	2509	inline_speed void
2101	ev_start (EV_P_ W w, int active)	2510	ev_start (EV_P_ W w, int active)
2102	{	2511	{
2103	pri_adjust (EV_A_ w);	2512	pri_adjust (EV_A_ w);
2104	w->active = active;	2513	w->active = active;
2105	ev_ref (EV_A);	2514	ev_ref (EV_A);
2106	}	2515	}
2107		2516
2108	void inline_size	2517	inline_size void
2109	ev_stop (EV_P_ W w)	2518	ev_stop (EV_P_ W w)
2110	{	2519	{
2111	ev_unref (EV_A);	2520	ev_unref (EV_A);
2112	w->active = 0;	2521	w->active = 0;
2113	}	2522	}
…		…
2120	int fd = w->fd;	2529	int fd = w->fd;
2121		2530
2122	if (expect_false (ev_is_active (w)))	2531	if (expect_false (ev_is_active (w)))
2123	return;	2532	return;
2124		2533
2125	assert (("ev_io_start called with negative fd", fd >= 0));	2534	assert (("libev: ev_io_start called with negative fd", fd >= 0));
2126	assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE))));	2535	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2127		2536
2128	EV_FREQUENT_CHECK;	2537	EV_FREQUENT_CHECK;
2129		2538
2130	ev_start (EV_A_ (W)w, 1);	2539	ev_start (EV_A_ (W)w, 1);
2131	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2540	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2132	wlist_add (&anfds[fd].head, (WL)w);	2541	wlist_add (&anfds[fd].head, (WL)w);
2133		2542
2134	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2543	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2135	w->events &= ~EV_IOFDSET;	2544	w->events &= ~EV__IOFDSET;
2136		2545
2137	EV_FREQUENT_CHECK;	2546	EV_FREQUENT_CHECK;
2138	}	2547	}
2139		2548
2140	void noinline	2549	void noinline
…		…
2142	{	2551	{
2143	clear_pending (EV_A_ (W)w);	2552	clear_pending (EV_A_ (W)w);
2144	if (expect_false (!ev_is_active (w)))	2553	if (expect_false (!ev_is_active (w)))
2145	return;	2554	return;
2146		2555
2147	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2556	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2148		2557
2149	EV_FREQUENT_CHECK;	2558	EV_FREQUENT_CHECK;
2150		2559
2151	wlist_del (&anfds[w->fd].head, (WL)w);	2560	wlist_del (&anfds[w->fd].head, (WL)w);
2152	ev_stop (EV_A_ (W)w);	2561	ev_stop (EV_A_ (W)w);
…		…
2162	if (expect_false (ev_is_active (w)))	2571	if (expect_false (ev_is_active (w)))
2163	return;	2572	return;
2164		2573
2165	ev_at (w) += mn_now;	2574	ev_at (w) += mn_now;
2166		2575
2167	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2576	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2168		2577
2169	EV_FREQUENT_CHECK;	2578	EV_FREQUENT_CHECK;
2170		2579
2171	++timercnt;	2580	++timercnt;
2172	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2581	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2175	ANHE_at_cache (timers [ev_active (w)]);	2584	ANHE_at_cache (timers [ev_active (w)]);
2176	upheap (timers, ev_active (w));	2585	upheap (timers, ev_active (w));
2177		2586
2178	EV_FREQUENT_CHECK;	2587	EV_FREQUENT_CHECK;
2179		2588
2180	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2589	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2181	}	2590	}
2182		2591
2183	void noinline	2592	void noinline
2184	ev_timer_stop (EV_P_ ev_timer *w)	2593	ev_timer_stop (EV_P_ ev_timer *w)
2185	{	2594	{
…		…
2190	EV_FREQUENT_CHECK;	2599	EV_FREQUENT_CHECK;
2191		2600
2192	{	2601	{
2193	int active = ev_active (w);	2602	int active = ev_active (w);
2194		2603
2195	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2604	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2196		2605
2197	--timercnt;	2606	--timercnt;
2198		2607
2199	if (expect_true (active < timercnt + HEAP0))	2608	if (expect_true (active < timercnt + HEAP0))
2200	{	2609	{
2201	timers [active] = timers [timercnt + HEAP0];	2610	timers [active] = timers [timercnt + HEAP0];
2202	adjustheap (timers, timercnt, active);	2611	adjustheap (timers, timercnt, active);
2203	}	2612	}
2204	}	2613	}
2205		2614
2206	EV_FREQUENT_CHECK;
2207
2208	ev_at (w) -= mn_now;	2615	ev_at (w) -= mn_now;
2209		2616
2210	ev_stop (EV_A_ (W)w);	2617	ev_stop (EV_A_ (W)w);
		2618
		2619	EV_FREQUENT_CHECK;
2211	}	2620	}
2212		2621
2213	void noinline	2622	void noinline
2214	ev_timer_again (EV_P_ ev_timer *w)	2623	ev_timer_again (EV_P_ ev_timer *w)
2215	{	2624	{
…		…
2233	}	2642	}
2234		2643
2235	EV_FREQUENT_CHECK;	2644	EV_FREQUENT_CHECK;
2236	}	2645	}
2237		2646
		2647	ev_tstamp
		2648	ev_timer_remaining (EV_P_ ev_timer *w)
		2649	{
		2650	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2651	}
		2652
2238	#if EV_PERIODIC_ENABLE	2653	#if EV_PERIODIC_ENABLE
2239	void noinline	2654	void noinline
2240	ev_periodic_start (EV_P_ ev_periodic *w)	2655	ev_periodic_start (EV_P_ ev_periodic *w)
2241	{	2656	{
2242	if (expect_false (ev_is_active (w)))	2657	if (expect_false (ev_is_active (w)))
…		…
2244		2659
2245	if (w->reschedule_cb)	2660	if (w->reschedule_cb)
2246	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2661	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2247	else if (w->interval)	2662	else if (w->interval)
2248	{	2663	{
2249	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2664	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2250	/* this formula differs from the one in periodic_reify because we do not always round up */	2665	/* this formula differs from the one in periodic_reify because we do not always round up */
2251	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2666	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2252	}	2667	}
2253	else	2668	else
2254	ev_at (w) = w->offset;	2669	ev_at (w) = w->offset;
…		…
2262	ANHE_at_cache (periodics [ev_active (w)]);	2677	ANHE_at_cache (periodics [ev_active (w)]);
2263	upheap (periodics, ev_active (w));	2678	upheap (periodics, ev_active (w));
2264		2679
2265	EV_FREQUENT_CHECK;	2680	EV_FREQUENT_CHECK;
2266		2681
2267	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2682	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2268	}	2683	}
2269		2684
2270	void noinline	2685	void noinline
2271	ev_periodic_stop (EV_P_ ev_periodic *w)	2686	ev_periodic_stop (EV_P_ ev_periodic *w)
2272	{	2687	{
…		…
2277	EV_FREQUENT_CHECK;	2692	EV_FREQUENT_CHECK;
2278		2693
2279	{	2694	{
2280	int active = ev_active (w);	2695	int active = ev_active (w);
2281		2696
2282	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2697	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2283		2698
2284	--periodiccnt;	2699	--periodiccnt;
2285		2700
2286	if (expect_true (active < periodiccnt + HEAP0))	2701	if (expect_true (active < periodiccnt + HEAP0))
2287	{	2702	{
2288	periodics [active] = periodics [periodiccnt + HEAP0];	2703	periodics [active] = periodics [periodiccnt + HEAP0];
2289	adjustheap (periodics, periodiccnt, active);	2704	adjustheap (periodics, periodiccnt, active);
2290	}	2705	}
2291	}	2706	}
2292		2707
2293	EV_FREQUENT_CHECK;
2294
2295	ev_stop (EV_A_ (W)w);	2708	ev_stop (EV_A_ (W)w);
		2709
		2710	EV_FREQUENT_CHECK;
2296	}	2711	}
2297		2712
2298	void noinline	2713	void noinline
2299	ev_periodic_again (EV_P_ ev_periodic *w)	2714	ev_periodic_again (EV_P_ ev_periodic *w)
2300	{	2715	{
…		…
2309	#endif	2724	#endif
2310		2725
2311	void noinline	2726	void noinline
2312	ev_signal_start (EV_P_ ev_signal *w)	2727	ev_signal_start (EV_P_ ev_signal *w)
2313	{	2728	{
2314	#if EV_MULTIPLICITY
2315	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2316	#endif
2317	if (expect_false (ev_is_active (w)))	2729	if (expect_false (ev_is_active (w)))
2318	return;	2730	return;
2319		2731
2320	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2732	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2321		2733
2322	evpipe_init (EV_A);	2734	#if EV_MULTIPLICITY
		2735	assert (("libev: a signal must not be attached to two different loops",
		2736	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2323		2737
2324	EV_FREQUENT_CHECK;	2738	signals [w->signum - 1].loop = EV_A;
		2739	#endif
2325		2740
		2741	EV_FREQUENT_CHECK;
		2742
		2743	#if EV_USE_SIGNALFD
		2744	if (sigfd == -2)
2326	{	2745	{
2327	#ifndef _WIN32	2746	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2328	sigset_t full, prev;	2747	if (sigfd < 0 && errno == EINVAL)
2329	sigfillset (&full);	2748	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2330	sigprocmask (SIG_SETMASK, &full, &prev);
2331	#endif
2332		2749
2333	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);	2750	if (sigfd >= 0)
		2751	{
		2752	fd_intern (sigfd); /* doing it twice will not hurt */
2334		2753
2335	#ifndef _WIN32	2754	sigemptyset (&sigfd_set);
2336	sigprocmask (SIG_SETMASK, &prev, 0);	2755
2337	#endif	2756	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2757	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2758	ev_io_start (EV_A_ &sigfd_w);
		2759	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2760	}
2338	}	2761	}
		2762
		2763	if (sigfd >= 0)
		2764	{
		2765	/* TODO: check .head */
		2766	sigaddset (&sigfd_set, w->signum);
		2767	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2768
		2769	signalfd (sigfd, &sigfd_set, 0);
		2770	}
		2771	#endif
2339		2772
2340	ev_start (EV_A_ (W)w, 1);	2773	ev_start (EV_A_ (W)w, 1);
2341	wlist_add (&signals [w->signum - 1].head, (WL)w);	2774	wlist_add (&signals [w->signum - 1].head, (WL)w);
2342		2775
2343	if (!((WL)w)->next)	2776	if (!((WL)w)->next)
		2777	# if EV_USE_SIGNALFD
		2778	if (sigfd < 0) /*TODO*/
		2779	# endif
2344	{	2780	{
2345	#if _WIN32	2781	# ifdef _WIN32
		2782	evpipe_init (EV_A);
		2783
2346	signal (w->signum, ev_sighandler);	2784	signal (w->signum, ev_sighandler);
2347	#else	2785	# else
2348	struct sigaction sa;	2786	struct sigaction sa;
		2787
		2788	evpipe_init (EV_A);
		2789
2349	sa.sa_handler = ev_sighandler;	2790	sa.sa_handler = ev_sighandler;
2350	sigfillset (&sa.sa_mask);	2791	sigfillset (&sa.sa_mask);
2351	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2792	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2352	sigaction (w->signum, &sa, 0);	2793	sigaction (w->signum, &sa, 0);
		2794
		2795	sigemptyset (&sa.sa_mask);
		2796	sigaddset (&sa.sa_mask, w->signum);
		2797	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2353	#endif	2798	#endif
2354	}	2799	}
2355		2800
2356	EV_FREQUENT_CHECK;	2801	EV_FREQUENT_CHECK;
2357	}	2802	}
2358		2803
2359	void noinline	2804	void noinline
…		…
2367		2812
2368	wlist_del (&signals [w->signum - 1].head, (WL)w);	2813	wlist_del (&signals [w->signum - 1].head, (WL)w);
2369	ev_stop (EV_A_ (W)w);	2814	ev_stop (EV_A_ (W)w);
2370		2815
2371	if (!signals [w->signum - 1].head)	2816	if (!signals [w->signum - 1].head)
		2817	{
		2818	#if EV_MULTIPLICITY
		2819	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2820	#endif
		2821	#if EV_USE_SIGNALFD
		2822	if (sigfd >= 0)
		2823	{
		2824	sigset_t ss;
		2825
		2826	sigemptyset (&ss);
		2827	sigaddset (&ss, w->signum);
		2828	sigdelset (&sigfd_set, w->signum);
		2829
		2830	signalfd (sigfd, &sigfd_set, 0);
		2831	sigprocmask (SIG_UNBLOCK, &ss, 0);
		2832	}
		2833	else
		2834	#endif
2372	signal (w->signum, SIG_DFL);	2835	signal (w->signum, SIG_DFL);
		2836	}
2373		2837
2374	EV_FREQUENT_CHECK;	2838	EV_FREQUENT_CHECK;
2375	}	2839	}
2376		2840
2377	void	2841	void
2378	ev_child_start (EV_P_ ev_child *w)	2842	ev_child_start (EV_P_ ev_child *w)
2379	{	2843	{
2380	#if EV_MULTIPLICITY	2844	#if EV_MULTIPLICITY
2381	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2845	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2382	#endif	2846	#endif
2383	if (expect_false (ev_is_active (w)))	2847	if (expect_false (ev_is_active (w)))
2384	return;	2848	return;
2385		2849
2386	EV_FREQUENT_CHECK;	2850	EV_FREQUENT_CHECK;
…		…
2411	# ifdef _WIN32	2875	# ifdef _WIN32
2412	# undef lstat	2876	# undef lstat
2413	# define lstat(a,b) _stati64 (a,b)	2877	# define lstat(a,b) _stati64 (a,b)
2414	# endif	2878	# endif
2415		2879
2416	#define DEF_STAT_INTERVAL 5.0074891	2880	#define DEF_STAT_INTERVAL 5.0074891
		2881	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2417	#define MIN_STAT_INTERVAL 0.1074891	2882	#define MIN_STAT_INTERVAL 0.1074891
2418		2883
2419	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2884	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2420		2885
2421	#if EV_USE_INOTIFY	2886	#if EV_USE_INOTIFY
2422	# define EV_INOTIFY_BUFSIZE 8192	2887
		2888	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		2889	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2423		2890
2424	static void noinline	2891	static void noinline
2425	infy_add (EV_P_ ev_stat *w)	2892	infy_add (EV_P_ ev_stat *w)
2426	{	2893	{
2427	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);	2894	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);
2428		2895
2429	if (w->wd < 0)	2896	if (w->wd >= 0)
		2897	{
		2898	struct statfs sfs;
		2899
		2900	/* now local changes will be tracked by inotify, but remote changes won't */
		2901	/* unless the filesystem is known to be local, we therefore still poll */
		2902	/* also do poll on <2.6.25, but with normal frequency */
		2903
		2904	if (!fs_2625)
		2905	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2906	else if (!statfs (w->path, &sfs)
		2907	&& (sfs.f_type == 0x1373 /* devfs */
		2908	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2909	|| sfs.f_type == 0x3153464a /* jfs */
		2910	|| sfs.f_type == 0x52654973 /* reiser3 */
		2911	|| sfs.f_type == 0x01021994 /* tempfs */
		2912	|| sfs.f_type == 0x58465342 /* xfs */))
		2913	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2914	else
		2915	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2430	{	2916	}
2431	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2917	else
		2918	{
		2919	/* can't use inotify, continue to stat */
		2920	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2432		2921
2433	/* monitor some parent directory for speedup hints */	2922	/* if path is not there, monitor some parent directory for speedup hints */
2434	/* note that exceeding the hardcoded limit is not a correctness issue, */	2923	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2435	/* but an efficiency issue only */	2924	/* but an efficiency issue only */
2436	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2925	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2437	{	2926	{
2438	char path [4096];	2927	char path [4096];
2439	strcpy (path, w->path);	2928	strcpy (path, w->path);
…		…
2443	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2932	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2444	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2933	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2445		2934
2446	char *pend = strrchr (path, '/');	2935	char *pend = strrchr (path, '/');
2447		2936
2448	if (!pend)	2937	if (!pend || pend == path)
2449	break; /* whoops, no '/', complain to your admin */	2938	break;
2450		2939
2451	*pend = 0;	2940	*pend = 0;
2452	w->wd = inotify_add_watch (fs_fd, path, mask);	2941	w->wd = inotify_add_watch (fs_fd, path, mask);
2453	}	2942	}
2454	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2943	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2455	}	2944	}
2456	}	2945	}
2457	else
2458	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2459		2946
2460	if (w->wd >= 0)	2947	if (w->wd >= 0)
2461	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2948	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2949
		2950	/* now re-arm timer, if required */
		2951	if (ev_is_active (&w->timer)) ev_ref (EV_A);
		2952	ev_timer_again (EV_A_ &w->timer);
		2953	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2462	}	2954	}
2463		2955
2464	static void noinline	2956	static void noinline
2465	infy_del (EV_P_ ev_stat *w)	2957	infy_del (EV_P_ ev_stat *w)
2466	{	2958	{
…		…
2496		2988
2497	if (w->wd == wd || wd == -1)	2989	if (w->wd == wd || wd == -1)
2498	{	2990	{
2499	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2991	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2500	{	2992	{
		2993	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2501	w->wd = -1;	2994	w->wd = -1;
2502	infy_add (EV_A_ w); /* re-add, no matter what */	2995	infy_add (EV_A_ w); /* re-add, no matter what */
2503	}	2996	}
2504		2997
2505	stat_timer_cb (EV_A_ &w->timer, 0);	2998	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2510		3003
2511	static void	3004	static void
2512	infy_cb (EV_P_ ev_io *w, int revents)	3005	infy_cb (EV_P_ ev_io *w, int revents)
2513	{	3006	{
2514	char buf [EV_INOTIFY_BUFSIZE];	3007	char buf [EV_INOTIFY_BUFSIZE];
2515	struct inotify_event *ev = (struct inotify_event *)buf;
2516	int ofs;	3008	int ofs;
2517	int len = read (fs_fd, buf, sizeof (buf));	3009	int len = read (fs_fd, buf, sizeof (buf));
2518		3010
2519	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	3011	for (ofs = 0; ofs < len; )
		3012	{
		3013	struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2520	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3014	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		3015	ofs += sizeof (struct inotify_event) + ev->len;
		3016	}
2521	}	3017	}
2522		3018
2523	void inline_size	3019	inline_size unsigned int
2524	infy_init (EV_P)	3020	ev_linux_version (void)
2525	{	3021	{
2526	if (fs_fd != -2)	3022	struct utsname buf;
		3023	unsigned int v;
		3024	int i;
		3025	char *p = buf.release;
		3026
		3027	if (uname (&buf))
2527	return;	3028	return 0;
2528		3029
		3030	for (i = 3+1; --i; )
		3031	{
		3032	unsigned int c = 0;
		3033
		3034	for (;;)
		3035	{
		3036	if (*p >= '0' && *p <= '9')
		3037	c = c * 10 + *p++ - '0';
		3038	else
		3039	{
		3040	p += *p == '.';
		3041	break;
		3042	}
		3043	}
		3044
		3045	v = (v << 8) | c;
		3046	}
		3047
		3048	return v;
		3049	}
		3050
		3051	inline_size void
		3052	ev_check_2625 (EV_P)
		3053	{
2529	/* kernels < 2.6.25 are borked	3054	/* kernels < 2.6.25 are borked
2530	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	3055	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2531	*/	3056	*/
2532	{	3057	if (ev_linux_version () < 0x020619)
2533	struct utsname buf;	3058	return;
2534	int major, minor, micro;
2535		3059
		3060	fs_2625 = 1;
		3061	}
		3062
		3063	inline_size int
		3064	infy_newfd (void)
		3065	{
		3066	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3067	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3068	if (fd >= 0)
		3069	return fd;
		3070	#endif
		3071	return inotify_init ();
		3072	}
		3073
		3074	inline_size void
		3075	infy_init (EV_P)
		3076	{
		3077	if (fs_fd != -2)
		3078	return;
		3079
2536	fs_fd = -1;	3080	fs_fd = -1;
2537		3081
2538	if (uname (&buf))	3082	ev_check_2625 (EV_A);
2539	return;
2540		3083
2541	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2542	return;
2543
2544	if (major < 2
2545	|| (major == 2 && minor < 6)
2546	|| (major == 2 && minor == 6 && micro < 25))
2547	return;
2548	}
2549
2550	fs_fd = inotify_init ();	3084	fs_fd = infy_newfd ();
2551		3085
2552	if (fs_fd >= 0)	3086	if (fs_fd >= 0)
2553	{	3087	{
		3088	fd_intern (fs_fd);
2554	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3089	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2555	ev_set_priority (&fs_w, EV_MAXPRI);	3090	ev_set_priority (&fs_w, EV_MAXPRI);
2556	ev_io_start (EV_A_ &fs_w);	3091	ev_io_start (EV_A_ &fs_w);
		3092	ev_unref (EV_A);
2557	}	3093	}
2558	}	3094	}
2559		3095
2560	void inline_size	3096	inline_size void
2561	infy_fork (EV_P)	3097	infy_fork (EV_P)
2562	{	3098	{
2563	int slot;	3099	int slot;
2564		3100
2565	if (fs_fd < 0)	3101	if (fs_fd < 0)
2566	return;	3102	return;
2567		3103
		3104	ev_ref (EV_A);
		3105	ev_io_stop (EV_A_ &fs_w);
2568	close (fs_fd);	3106	close (fs_fd);
2569	fs_fd = inotify_init ();	3107	fs_fd = infy_newfd ();
		3108
		3109	if (fs_fd >= 0)
		3110	{
		3111	fd_intern (fs_fd);
		3112	ev_io_set (&fs_w, fs_fd, EV_READ);
		3113	ev_io_start (EV_A_ &fs_w);
		3114	ev_unref (EV_A);
		3115	}
2570		3116
2571	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3117	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2572	{	3118	{
2573	WL w_ = fs_hash [slot].head;	3119	WL w_ = fs_hash [slot].head;
2574	fs_hash [slot].head = 0;	3120	fs_hash [slot].head = 0;
…		…
2581	w->wd = -1;	3127	w->wd = -1;
2582		3128
2583	if (fs_fd >= 0)	3129	if (fs_fd >= 0)
2584	infy_add (EV_A_ w); /* re-add, no matter what */	3130	infy_add (EV_A_ w); /* re-add, no matter what */
2585	else	3131	else
		3132	{
		3133	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3134	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2586	ev_timer_start (EV_A_ &w->timer);	3135	ev_timer_again (EV_A_ &w->timer);
		3136	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3137	}
2587	}	3138	}
2588	}	3139	}
2589	}	3140	}
2590		3141
2591	#endif	3142	#endif
…		…
2608	static void noinline	3159	static void noinline
2609	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3160	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2610	{	3161	{
2611	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	3162	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2612		3163
2613	/* we copy this here each the time so that */	3164	ev_statdata prev = w->attr;
2614	/* prev has the old value when the callback gets invoked */
2615	w->prev = w->attr;
2616	ev_stat_stat (EV_A_ w);	3165	ev_stat_stat (EV_A_ w);
2617		3166
2618	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3167	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2619	if (	3168	if (
2620	w->prev.st_dev != w->attr.st_dev	3169	prev.st_dev != w->attr.st_dev
2621	|| w->prev.st_ino != w->attr.st_ino	3170	|| prev.st_ino != w->attr.st_ino
2622	|| w->prev.st_mode != w->attr.st_mode	3171	|| prev.st_mode != w->attr.st_mode
2623	|| w->prev.st_nlink != w->attr.st_nlink	3172	|| prev.st_nlink != w->attr.st_nlink
2624	|| w->prev.st_uid != w->attr.st_uid	3173	|| prev.st_uid != w->attr.st_uid
2625	|| w->prev.st_gid != w->attr.st_gid	3174	|| prev.st_gid != w->attr.st_gid
2626	|| w->prev.st_rdev != w->attr.st_rdev	3175	|| prev.st_rdev != w->attr.st_rdev
2627	|| w->prev.st_size != w->attr.st_size	3176	|| prev.st_size != w->attr.st_size
2628	|| w->prev.st_atime != w->attr.st_atime	3177	|| prev.st_atime != w->attr.st_atime
2629	|| w->prev.st_mtime != w->attr.st_mtime	3178	|| prev.st_mtime != w->attr.st_mtime
2630	|| w->prev.st_ctime != w->attr.st_ctime	3179	|| prev.st_ctime != w->attr.st_ctime
2631	) {	3180	) {
		3181	/* we only update w->prev on actual differences */
		3182	/* in case we test more often than invoke the callback, */
		3183	/* to ensure that prev is always different to attr */
		3184	w->prev = prev;
		3185
2632	#if EV_USE_INOTIFY	3186	#if EV_USE_INOTIFY
2633	if (fs_fd >= 0)	3187	if (fs_fd >= 0)
2634	{	3188	{
2635	infy_del (EV_A_ w);	3189	infy_del (EV_A_ w);
2636	infy_add (EV_A_ w);	3190	infy_add (EV_A_ w);
…		…
2646	ev_stat_start (EV_P_ ev_stat *w)	3200	ev_stat_start (EV_P_ ev_stat *w)
2647	{	3201	{
2648	if (expect_false (ev_is_active (w)))	3202	if (expect_false (ev_is_active (w)))
2649	return;	3203	return;
2650		3204
2651	/* since we use memcmp, we need to clear any padding data etc. */
2652	memset (&w->prev, 0, sizeof (ev_statdata));
2653	memset (&w->attr, 0, sizeof (ev_statdata));
2654
2655	ev_stat_stat (EV_A_ w);	3205	ev_stat_stat (EV_A_ w);
2656		3206
		3207	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2657	if (w->interval < MIN_STAT_INTERVAL)	3208	w->interval = MIN_STAT_INTERVAL;
2658	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2659		3209
2660	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3210	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2661	ev_set_priority (&w->timer, ev_priority (w));	3211	ev_set_priority (&w->timer, ev_priority (w));
2662		3212
2663	#if EV_USE_INOTIFY	3213	#if EV_USE_INOTIFY
2664	infy_init (EV_A);	3214	infy_init (EV_A);
2665		3215
2666	if (fs_fd >= 0)	3216	if (fs_fd >= 0)
2667	infy_add (EV_A_ w);	3217	infy_add (EV_A_ w);
2668	else	3218	else
2669	#endif	3219	#endif
		3220	{
2670	ev_timer_start (EV_A_ &w->timer);	3221	ev_timer_again (EV_A_ &w->timer);
		3222	ev_unref (EV_A);
		3223	}
2671		3224
2672	ev_start (EV_A_ (W)w, 1);	3225	ev_start (EV_A_ (W)w, 1);
2673		3226
2674	EV_FREQUENT_CHECK;	3227	EV_FREQUENT_CHECK;
2675	}	3228	}
…		…
2684	EV_FREQUENT_CHECK;	3237	EV_FREQUENT_CHECK;
2685		3238
2686	#if EV_USE_INOTIFY	3239	#if EV_USE_INOTIFY
2687	infy_del (EV_A_ w);	3240	infy_del (EV_A_ w);
2688	#endif	3241	#endif
		3242
		3243	if (ev_is_active (&w->timer))
		3244	{
		3245	ev_ref (EV_A);
2689	ev_timer_stop (EV_A_ &w->timer);	3246	ev_timer_stop (EV_A_ &w->timer);
		3247	}
2690		3248
2691	ev_stop (EV_A_ (W)w);	3249	ev_stop (EV_A_ (W)w);
2692		3250
2693	EV_FREQUENT_CHECK;	3251	EV_FREQUENT_CHECK;
2694	}	3252	}
…		…
2835	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3393	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2836	{	3394	{
2837	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3395	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2838		3396
2839	{	3397	{
2840	struct ev_loop *loop = w->other;	3398	EV_P = w->other;
2841		3399
2842	while (fdchangecnt)	3400	while (fdchangecnt)
2843	{	3401	{
2844	fd_reify (EV_A);	3402	fd_reify (EV_A);
2845	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3403	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
2850	static void	3408	static void
2851	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)	3409	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2852	{	3410	{
2853	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));	3411	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2854		3412
		3413	ev_embed_stop (EV_A_ w);
		3414
2855	{	3415	{
2856	struct ev_loop *loop = w->other;	3416	EV_P = w->other;
2857		3417
2858	ev_loop_fork (EV_A);	3418	ev_loop_fork (EV_A);
		3419	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2859	}	3420	}
		3421
		3422	ev_embed_start (EV_A_ w);
2860	}	3423	}
2861		3424
2862	#if 0	3425	#if 0
2863	static void	3426	static void
2864	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3427	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
…		…
2872	{	3435	{
2873	if (expect_false (ev_is_active (w)))	3436	if (expect_false (ev_is_active (w)))
2874	return;	3437	return;
2875		3438
2876	{	3439	{
2877	struct ev_loop *loop = w->other;	3440	EV_P = w->other;
2878	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3441	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2879	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3442	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2880	}	3443	}
2881		3444
2882	EV_FREQUENT_CHECK;	3445	EV_FREQUENT_CHECK;
2883		3446
…		…
2909		3472
2910	ev_io_stop (EV_A_ &w->io);	3473	ev_io_stop (EV_A_ &w->io);
2911	ev_prepare_stop (EV_A_ &w->prepare);	3474	ev_prepare_stop (EV_A_ &w->prepare);
2912	ev_fork_stop (EV_A_ &w->fork);	3475	ev_fork_stop (EV_A_ &w->fork);
2913		3476
		3477	ev_stop (EV_A_ (W)w);
		3478
2914	EV_FREQUENT_CHECK;	3479	EV_FREQUENT_CHECK;
2915	}	3480	}
2916	#endif	3481	#endif
2917		3482
2918	#if EV_FORK_ENABLE	3483	#if EV_FORK_ENABLE
…		…
2994		3559
2995	void	3560	void
2996	ev_async_send (EV_P_ ev_async *w)	3561	ev_async_send (EV_P_ ev_async *w)
2997	{	3562	{
2998	w->sent = 1;	3563	w->sent = 1;
2999	evpipe_write (EV_A_ &gotasync);	3564	evpipe_write (EV_A_ &async_pending);
3000	}	3565	}
3001	#endif	3566	#endif
3002		3567
3003	/*****************************************************************************/	3568	/*****************************************************************************/
3004		3569
…		…
3066	ev_timer_set (&once->to, timeout, 0.);	3631	ev_timer_set (&once->to, timeout, 0.);
3067	ev_timer_start (EV_A_ &once->to);	3632	ev_timer_start (EV_A_ &once->to);
3068	}	3633	}
3069	}	3634	}
3070		3635
		3636	/*****************************************************************************/
		3637
		3638	#if EV_WALK_ENABLE
		3639	void
		3640	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3641	{
		3642	int i, j;
		3643	ev_watcher_list *wl, *wn;
		3644
		3645	if (types & (EV_IO | EV_EMBED))
		3646	for (i = 0; i < anfdmax; ++i)
		3647	for (wl = anfds [i].head; wl; )
		3648	{
		3649	wn = wl->next;
		3650
		3651	#if EV_EMBED_ENABLE
		3652	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3653	{
		3654	if (types & EV_EMBED)
		3655	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3656	}
		3657	else
		3658	#endif
		3659	#if EV_USE_INOTIFY
		3660	if (ev_cb ((ev_io *)wl) == infy_cb)
		3661	;
		3662	else
		3663	#endif
		3664	if ((ev_io *)wl != &pipe_w)
		3665	if (types & EV_IO)
		3666	cb (EV_A_ EV_IO, wl);
		3667
		3668	wl = wn;
		3669	}
		3670
		3671	if (types & (EV_TIMER | EV_STAT))
		3672	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3673	#if EV_STAT_ENABLE
		3674	/*TODO: timer is not always active*/
		3675	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3676	{
		3677	if (types & EV_STAT)
		3678	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3679	}
		3680	else
		3681	#endif
		3682	if (types & EV_TIMER)
		3683	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3684
		3685	#if EV_PERIODIC_ENABLE
		3686	if (types & EV_PERIODIC)
		3687	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3688	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3689	#endif
		3690
		3691	#if EV_IDLE_ENABLE
		3692	if (types & EV_IDLE)
		3693	for (j = NUMPRI; i--; )
		3694	for (i = idlecnt [j]; i--; )
		3695	cb (EV_A_ EV_IDLE, idles [j][i]);
		3696	#endif
		3697
		3698	#if EV_FORK_ENABLE
		3699	if (types & EV_FORK)
		3700	for (i = forkcnt; i--; )
		3701	if (ev_cb (forks [i]) != embed_fork_cb)
		3702	cb (EV_A_ EV_FORK, forks [i]);
		3703	#endif
		3704
		3705	#if EV_ASYNC_ENABLE
		3706	if (types & EV_ASYNC)
		3707	for (i = asynccnt; i--; )
		3708	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3709	#endif
		3710
		3711	if (types & EV_PREPARE)
		3712	for (i = preparecnt; i--; )
		3713	#if EV_EMBED_ENABLE
		3714	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3715	#endif
		3716	cb (EV_A_ EV_PREPARE, prepares [i]);
		3717
		3718	if (types & EV_CHECK)
		3719	for (i = checkcnt; i--; )
		3720	cb (EV_A_ EV_CHECK, checks [i]);
		3721
		3722	if (types & EV_SIGNAL)
		3723	for (i = 0; i < EV_NSIG - 1; ++i)
		3724	for (wl = signals [i].head; wl; )
		3725	{
		3726	wn = wl->next;
		3727	cb (EV_A_ EV_SIGNAL, wl);
		3728	wl = wn;
		3729	}
		3730
		3731	if (types & EV_CHILD)
		3732	for (i = EV_PID_HASHSIZE; i--; )
		3733	for (wl = childs [i]; wl; )
		3734	{
		3735	wn = wl->next;
		3736	cb (EV_A_ EV_CHILD, wl);
		3737	wl = wn;
		3738	}
		3739	/* EV_STAT 0x00001000 /* stat data changed */
		3740	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3741	}
		3742	#endif
		3743
3071	#if EV_MULTIPLICITY	3744	#if EV_MULTIPLICITY
3072	#include "ev_wrap.h"	3745	#include "ev_wrap.h"
3073	#endif	3746	#endif
3074		3747
3075	#ifdef __cplusplus	3748	#ifdef __cplusplus

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