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Comparing libev/ev.c (file contents):
Revision 1.285 by root, Wed Apr 15 19:35:53 2009 UTC vs.
Revision 1.337 by root, Wed Mar 10 09:18:24 2010 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008,2009 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	*
…		…
57	# endif	57	# endif
58	# ifndef EV_USE_MONOTONIC	58	# ifndef EV_USE_MONOTONIC
59	# define EV_USE_MONOTONIC 1	59	# define EV_USE_MONOTONIC 1
60	# endif	60	# endif
61	# endif	61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
62	# endif	64	# endif
63		65
64	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
65	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
66	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
…		…
108	# define EV_USE_EPOLL 0	110	# define EV_USE_EPOLL 0
109	# endif	111	# endif
110	# endif	112	# endif
111		113
112	# ifndef EV_USE_KQUEUE	114	# ifndef EV_USE_KQUEUE
113	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	115	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114	# define EV_USE_KQUEUE 1	116	# define EV_USE_KQUEUE 1
115	# else	117	# else
116	# define EV_USE_KQUEUE 0	118	# define EV_USE_KQUEUE 0
117	# endif	119	# endif
118	# endif	120	# endif
…		…
131	# else	133	# else
132	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
133	# endif	135	# endif
134	# endif	136	# endif
135		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
136	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
137	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
138	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD 1
139	# else	149	# else
140	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
…		…
143		153
144	#endif	154	#endif
145		155
146	#include <math.h>	156	#include <math.h>
147	#include <stdlib.h>	157	#include <stdlib.h>
		158	#include <string.h>
148	#include <fcntl.h>	159	#include <fcntl.h>
149	#include <stddef.h>	160	#include <stddef.h>
150		161
151	#include <stdio.h>	162	#include <stdio.h>
152		163
153	#include <assert.h>	164	#include <assert.h>
154	#include <errno.h>	165	#include <errno.h>
155	#include <sys/types.h>	166	#include <sys/types.h>
156	#include <time.h>	167	#include <time.h>
		168	#include <limits.h>
157		169
158	#include <signal.h>	170	#include <signal.h>
159		171
160	#ifdef EV_H	172	#ifdef EV_H
161	# include EV_H	173	# include EV_H
…		…
172	# define WIN32_LEAN_AND_MEAN	184	# define WIN32_LEAN_AND_MEAN
173	# include <windows.h>	185	# include <windows.h>
174	# ifndef EV_SELECT_IS_WINSOCKET	186	# ifndef EV_SELECT_IS_WINSOCKET
175	# define EV_SELECT_IS_WINSOCKET 1	187	# define EV_SELECT_IS_WINSOCKET 1
176	# endif	188	# endif
		189	# undef EV_AVOID_STDIO
177	#endif	190	#endif
178		191
179	/* 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	/* but consider reporting it, too! :) */
		219	# define EV_NSIG 65
		220	#endif
180		221
181	#ifndef EV_USE_CLOCK_SYSCALL	222	#ifndef EV_USE_CLOCK_SYSCALL
182	# if __linux && __GLIBC__ >= 2	223	# if __linux && __GLIBC__ >= 2
183	# define EV_USE_CLOCK_SYSCALL 1	224	# define EV_USE_CLOCK_SYSCALL 1
184	# else	225	# else
…		…
264	# else	305	# else
265	# define EV_USE_EVENTFD 0	306	# define EV_USE_EVENTFD 0
266	# endif	307	# endif
267	#endif	308	#endif
268		309
		310	#ifndef EV_USE_SIGNALFD
		311	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		312	# define EV_USE_SIGNALFD 1
		313	# else
		314	# define EV_USE_SIGNALFD 0
		315	# endif
		316	#endif
		317
269	#if 0 /* debugging */	318	#if 0 /* debugging */
270	# define EV_VERIFY 3	319	# define EV_VERIFY 3
271	# define EV_USE_4HEAP 1	320	# define EV_USE_4HEAP 1
272	# define EV_HEAP_CACHE_AT 1	321	# define EV_HEAP_CACHE_AT 1
273	#endif	322	#endif
…		…
282		331
283	#ifndef EV_HEAP_CACHE_AT	332	#ifndef EV_HEAP_CACHE_AT
284	# define EV_HEAP_CACHE_AT !EV_MINIMAL	333	# define EV_HEAP_CACHE_AT !EV_MINIMAL
285	#endif	334	#endif
286		335
		336	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		337	/* which makes programs even slower. might work on other unices, too. */
		338	#if EV_USE_CLOCK_SYSCALL
		339	# include <syscall.h>
		340	# ifdef SYS_clock_gettime
		341	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		342	# undef EV_USE_MONOTONIC
		343	# define EV_USE_MONOTONIC 1
		344	# else
		345	# undef EV_USE_CLOCK_SYSCALL
		346	# define EV_USE_CLOCK_SYSCALL 0
		347	# endif
		348	#endif
		349
287	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	350	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
		351
		352	#ifdef _AIX
		353	/* AIX has a completely broken poll.h header */
		354	# undef EV_USE_POLL
		355	# define EV_USE_POLL 0
		356	#endif
288		357
289	#ifndef CLOCK_MONOTONIC	358	#ifndef CLOCK_MONOTONIC
290	# undef EV_USE_MONOTONIC	359	# undef EV_USE_MONOTONIC
291	# define EV_USE_MONOTONIC 0	360	# define EV_USE_MONOTONIC 0
292	#endif	361	#endif
…		…
320		389
321	#if EV_SELECT_IS_WINSOCKET	390	#if EV_SELECT_IS_WINSOCKET
322	# include <winsock.h>	391	# include <winsock.h>
323	#endif	392	#endif
324		393
325	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326	/* which makes programs even slower. might work on other unices, too. */
327	#if EV_USE_CLOCK_SYSCALL
328	# include <syscall.h>
329	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330	# undef EV_USE_MONOTONIC
331	# define EV_USE_MONOTONIC 1
332	#endif
333
334	#if EV_USE_EVENTFD	394	#if EV_USE_EVENTFD
335	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	395	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336	# include <stdint.h>	396	# include <stdint.h>
		397	# ifndef EFD_NONBLOCK
		398	# define EFD_NONBLOCK O_NONBLOCK
		399	# endif
		400	# ifndef EFD_CLOEXEC
		401	# ifdef O_CLOEXEC
		402	# define EFD_CLOEXEC O_CLOEXEC
		403	# else
		404	# define EFD_CLOEXEC 02000000
		405	# endif
		406	# endif
337	# ifdef __cplusplus	407	# ifdef __cplusplus
338	extern "C" {	408	extern "C" {
339	# endif	409	# endif
340	int eventfd (unsigned int initval, int flags);	410	int (eventfd) (unsigned int initval, int flags);
341	# ifdef __cplusplus	411	# ifdef __cplusplus
342	}	412	}
343	# endif	413	# endif
344	#endif	414	#endif
		415
		416	#if EV_USE_SIGNALFD
		417	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		418	# include <stdint.h>
		419	# ifndef SFD_NONBLOCK
		420	# define SFD_NONBLOCK O_NONBLOCK
		421	# endif
		422	# ifndef SFD_CLOEXEC
		423	# ifdef O_CLOEXEC
		424	# define SFD_CLOEXEC O_CLOEXEC
		425	# else
		426	# define SFD_CLOEXEC 02000000
		427	# endif
		428	# endif
		429	# ifdef __cplusplus
		430	extern "C" {
		431	# endif
		432	int signalfd (int fd, const sigset_t *mask, int flags);
		433
		434	struct signalfd_siginfo
		435	{
		436	uint32_t ssi_signo;
		437	char pad[128 - sizeof (uint32_t)];
		438	};
		439	# ifdef __cplusplus
		440	}
		441	# endif
		442	#endif
		443
345		444
346	/**/	445	/**/
347		446
348	#if EV_VERIFY >= 3	447	#if EV_VERIFY >= 3
349	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	448	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
…		…
361	*/	460	*/
362	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	461	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
363		462
364	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	463	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
365	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	464	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
366	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
367		465
368	#if __GNUC__ >= 4	466	#if __GNUC__ >= 4
369	# define expect(expr,value) __builtin_expect ((expr),(value))	467	# define expect(expr,value) __builtin_expect ((expr),(value))
370	# define noinline __attribute__ ((noinline))	468	# define noinline __attribute__ ((noinline))
371	#else	469	#else
…		…
384	# define inline_speed static noinline	482	# define inline_speed static noinline
385	#else	483	#else
386	# define inline_speed static inline	484	# define inline_speed static inline
387	#endif	485	#endif
388		486
389	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	487	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		488
		489	#if EV_MINPRI == EV_MAXPRI
		490	# define ABSPRI(w) (((W)w), 0)
		491	#else
390	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	492	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		493	#endif
391		494
392	#define EMPTY /* required for microsofts broken pseudo-c compiler */	495	#define EMPTY /* required for microsofts broken pseudo-c compiler */
393	#define EMPTY2(a,b) /* used to suppress some warnings */	496	#define EMPTY2(a,b) /* used to suppress some warnings */
394		497
395	typedef ev_watcher *W;	498	typedef ev_watcher *W;
…		…
407		510
408	#if EV_USE_MONOTONIC	511	#if EV_USE_MONOTONIC
409	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	512	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410	#endif	513	#endif
411		514
		515	#ifndef EV_FD_TO_WIN32_HANDLE
		516	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		517	#endif
		518	#ifndef EV_WIN32_HANDLE_TO_FD
		519	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		520	#endif
		521	#ifndef EV_WIN32_CLOSE_FD
		522	# define EV_WIN32_CLOSE_FD(fd) close (fd)
		523	#endif
		524
412	#ifdef _WIN32	525	#ifdef _WIN32
413	# include "ev_win32.c"	526	# include "ev_win32.c"
414	#endif	527	#endif
415		528
416	/*****************************************************************************/	529	/*****************************************************************************/
		530
		531	#if EV_AVOID_STDIO
		532	static void noinline
		533	ev_printerr (const char *msg)
		534	{
		535	write (STDERR_FILENO, msg, strlen (msg));
		536	}
		537	#endif
417		538
418	static void (*syserr_cb)(const char *msg);	539	static void (*syserr_cb)(const char *msg);
419		540
420	void	541	void
421	ev_set_syserr_cb (void (*cb)(const char *msg))	542	ev_set_syserr_cb (void (*cb)(const char *msg))
…		…
431		552
432	if (syserr_cb)	553	if (syserr_cb)
433	syserr_cb (msg);	554	syserr_cb (msg);
434	else	555	else
435	{	556	{
		557	#if EV_AVOID_STDIO
		558	const char *err = strerror (errno);
		559
		560	ev_printerr (msg);
		561	ev_printerr (": ");
		562	ev_printerr (err);
		563	ev_printerr ("\n");
		564	#else
436	perror (msg);	565	perror (msg);
		566	#endif
437	abort ();	567	abort ();
438	}	568	}
439	}	569	}
440		570
441	static void *	571	static void *
442	ev_realloc_emul (void *ptr, long size)	572	ev_realloc_emul (void *ptr, long size)
443	{	573	{
		574	#if __GLIBC__
		575	return realloc (ptr, size);
		576	#else
444	/* some systems, notably openbsd and darwin, fail to properly	577	/* some systems, notably openbsd and darwin, fail to properly
445	* implement realloc (x, 0) (as required by both ansi c-98 and	578	* implement realloc (x, 0) (as required by both ansi c-89 and
446	* the single unix specification, so work around them here.	579	* the single unix specification, so work around them here.
447	*/	580	*/
448		581
449	if (size)	582	if (size)
450	return realloc (ptr, size);	583	return realloc (ptr, size);
451		584
452	free (ptr);	585	free (ptr);
453	return 0;	586	return 0;
		587	#endif
454	}	588	}
455		589
456	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;	590	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
457		591
458	void	592	void
…		…
466	{	600	{
467	ptr = alloc (ptr, size);	601	ptr = alloc (ptr, size);
468		602
469	if (!ptr && size)	603	if (!ptr && size)
470	{	604	{
		605	#if EV_AVOID_STDIO
		606	ev_printerr ("libev: memory allocation failed, aborting.\n");
		607	#else
471	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	608	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		609	#endif
472	abort ();	610	abort ();
473	}	611	}
474		612
475	return ptr;	613	return ptr;
476	}	614	}
…		…
478	#define ev_malloc(size) ev_realloc (0, (size))	616	#define ev_malloc(size) ev_realloc (0, (size))
479	#define ev_free(ptr) ev_realloc ((ptr), 0)	617	#define ev_free(ptr) ev_realloc ((ptr), 0)
480		618
481	/*****************************************************************************/	619	/*****************************************************************************/
482		620
		621	/* set in reify when reification needed */
		622	#define EV_ANFD_REIFY 1
		623
		624	/* file descriptor info structure */
483	typedef struct	625	typedef struct
484	{	626	{
485	WL head;	627	WL head;
486	unsigned char events;	628	unsigned char events; /* the events watched for */
487	unsigned char reify;	629	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
488	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */	630	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489	unsigned char unused;	631	unsigned char unused;
490	#if EV_USE_EPOLL	632	#if EV_USE_EPOLL
491	unsigned int egen; /* generation counter to counter epoll bugs */	633	unsigned int egen; /* generation counter to counter epoll bugs */
492	#endif	634	#endif
493	#if EV_SELECT_IS_WINSOCKET	635	#if EV_SELECT_IS_WINSOCKET
494	SOCKET handle;	636	SOCKET handle;
495	#endif	637	#endif
496	} ANFD;	638	} ANFD;
497		639
		640	/* stores the pending event set for a given watcher */
498	typedef struct	641	typedef struct
499	{	642	{
500	W w;	643	W w;
501	int events;	644	int events; /* the pending event set for the given watcher */
502	} ANPENDING;	645	} ANPENDING;
503		646
504	#if EV_USE_INOTIFY	647	#if EV_USE_INOTIFY
505	/* hash table entry per inotify-id */	648	/* hash table entry per inotify-id */
506	typedef struct	649	typedef struct
…		…
509	} ANFS;	652	} ANFS;
510	#endif	653	#endif
511		654
512	/* Heap Entry */	655	/* Heap Entry */
513	#if EV_HEAP_CACHE_AT	656	#if EV_HEAP_CACHE_AT
		657	/* a heap element */
514	typedef struct {	658	typedef struct {
515	ev_tstamp at;	659	ev_tstamp at;
516	WT w;	660	WT w;
517	} ANHE;	661	} ANHE;
518		662
519	#define ANHE_w(he) (he).w /* access watcher, read-write */	663	#define ANHE_w(he) (he).w /* access watcher, read-write */
520	#define ANHE_at(he) (he).at /* access cached at, read-only */	664	#define ANHE_at(he) (he).at /* access cached at, read-only */
521	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */	665	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522	#else	666	#else
		667	/* a heap element */
523	typedef WT ANHE;	668	typedef WT ANHE;
524		669
525	#define ANHE_w(he) (he)	670	#define ANHE_w(he) (he)
526	#define ANHE_at(he) (he)->at	671	#define ANHE_at(he) (he)->at
527	#define ANHE_at_cache(he)	672	#define ANHE_at_cache(he)
…		…
551		696
552	static int ev_default_loop_ptr;	697	static int ev_default_loop_ptr;
553		698
554	#endif	699	#endif
555		700
		701	#if EV_MINIMAL < 2
		702	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		703	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		704	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		705	#else
		706	# define EV_RELEASE_CB (void)0
		707	# define EV_ACQUIRE_CB (void)0
		708	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		709	#endif
		710
		711	#define EVUNLOOP_RECURSE 0x80
		712
556	/*****************************************************************************/	713	/*****************************************************************************/
557		714
		715	#ifndef EV_HAVE_EV_TIME
558	ev_tstamp	716	ev_tstamp
559	ev_time (void)	717	ev_time (void)
560	{	718	{
561	#if EV_USE_REALTIME	719	#if EV_USE_REALTIME
562	if (expect_true (have_realtime))	720	if (expect_true (have_realtime))
…		…
569		727
570	struct timeval tv;	728	struct timeval tv;
571	gettimeofday (&tv, 0);	729	gettimeofday (&tv, 0);
572	return tv.tv_sec + tv.tv_usec * 1e-6;	730	return tv.tv_sec + tv.tv_usec * 1e-6;
573	}	731	}
		732	#endif
574		733
575	inline_size ev_tstamp	734	inline_size ev_tstamp
576	get_clock (void)	735	get_clock (void)
577	{	736	{
578	#if EV_USE_MONOTONIC	737	#if EV_USE_MONOTONIC
…		…
614		773
615	tv.tv_sec = (time_t)delay;	774	tv.tv_sec = (time_t)delay;
616	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	775	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
617		776
618	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	777	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619	/* somehting nto guaranteed by newer posix versions, but guaranteed */	778	/* something not guaranteed by newer posix versions, but guaranteed */
620	/* by older ones */	779	/* by older ones */
621	select (0, 0, 0, 0, &tv);	780	select (0, 0, 0, 0, &tv);
622	#endif	781	#endif
623	}	782	}
624	}	783	}
625		784
626	/*****************************************************************************/	785	/*****************************************************************************/
627		786
628	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	787	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629		788
		789	/* find a suitable new size for the given array, */
		790	/* hopefully by rounding to a ncie-to-malloc size */
630	inline_size int	791	inline_size int
631	array_nextsize (int elem, int cur, int cnt)	792	array_nextsize (int elem, int cur, int cnt)
632	{	793	{
633	int ncur = cur + 1;	794	int ncur = cur + 1;
634		795
…		…
680	#define array_free(stem, idx) \	841	#define array_free(stem, idx) \
681	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0	842	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682		843
683	/*****************************************************************************/	844	/*****************************************************************************/
684		845
		846	/* dummy callback for pending events */
		847	static void noinline
		848	pendingcb (EV_P_ ev_prepare *w, int revents)
		849	{
		850	}
		851
685	void noinline	852	void noinline
686	ev_feed_event (EV_P_ void *w, int revents)	853	ev_feed_event (EV_P_ void *w, int revents)
687	{	854	{
688	W w_ = (W)w;	855	W w_ = (W)w;
689	int pri = ABSPRI (w_);	856	int pri = ABSPRI (w_);
…		…
724	}	891	}
725		892
726	/*****************************************************************************/	893	/*****************************************************************************/
727		894
728	inline_speed void	895	inline_speed void
729	fd_event (EV_P_ int fd, int revents)	896	fd_event_nocheck (EV_P_ int fd, int revents)
730	{	897	{
731	ANFD *anfd = anfds + fd;	898	ANFD *anfd = anfds + fd;
732	ev_io *w;	899	ev_io *w;
733		900
734	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	901	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
738	if (ev)	905	if (ev)
739	ev_feed_event (EV_A_ (W)w, ev);	906	ev_feed_event (EV_A_ (W)w, ev);
740	}	907	}
741	}	908	}
742		909
		910	/* do not submit kernel events for fds that have reify set */
		911	/* because that means they changed while we were polling for new events */
		912	inline_speed void
		913	fd_event (EV_P_ int fd, int revents)
		914	{
		915	ANFD *anfd = anfds + fd;
		916
		917	if (expect_true (!anfd->reify))
		918	fd_event_nocheck (EV_A_ fd, revents);
		919	}
		920
743	void	921	void
744	ev_feed_fd_event (EV_P_ int fd, int revents)	922	ev_feed_fd_event (EV_P_ int fd, int revents)
745	{	923	{
746	if (fd >= 0 && fd < anfdmax)	924	if (fd >= 0 && fd < anfdmax)
747	fd_event (EV_A_ fd, revents);	925	fd_event_nocheck (EV_A_ fd, revents);
748	}	926	}
749		927
		928	/* make sure the external fd watch events are in-sync */
		929	/* with the kernel/libev internal state */
750	inline_size void	930	inline_size void
751	fd_reify (EV_P)	931	fd_reify (EV_P)
752	{	932	{
753	int i;	933	int i;
754		934
…		…
765		945
766	#if EV_SELECT_IS_WINSOCKET	946	#if EV_SELECT_IS_WINSOCKET
767	if (events)	947	if (events)
768	{	948	{
769	unsigned long arg;	949	unsigned long arg;
770	#ifdef EV_FD_TO_WIN32_HANDLE
771	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	950	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
772	#else
773	anfd->handle = _get_osfhandle (fd);
774	#endif
775	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	951	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
776	}	952	}
777	#endif	953	#endif
778		954
779	{	955	{
…		…
789	}	965	}
790		966
791	fdchangecnt = 0;	967	fdchangecnt = 0;
792	}	968	}
793		969
		970	/* something about the given fd changed */
794	inline_size void	971	inline_size void
795	fd_change (EV_P_ int fd, int flags)	972	fd_change (EV_P_ int fd, int flags)
796	{	973	{
797	unsigned char reify = anfds [fd].reify;	974	unsigned char reify = anfds [fd].reify;
798	anfds [fd].reify |= flags;	975	anfds [fd].reify |= flags;
…		…
803	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	980	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
804	fdchanges [fdchangecnt - 1] = fd;	981	fdchanges [fdchangecnt - 1] = fd;
805	}	982	}
806	}	983	}
807		984
		985	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
808	inline_speed void	986	inline_speed void
809	fd_kill (EV_P_ int fd)	987	fd_kill (EV_P_ int fd)
810	{	988	{
811	ev_io *w;	989	ev_io *w;
812		990
…		…
815	ev_io_stop (EV_A_ w);	993	ev_io_stop (EV_A_ w);
816	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	994	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
817	}	995	}
818	}	996	}
819		997
		998	/* check whether the given fd is actually valid, for error recovery */
820	inline_size int	999	inline_size int
821	fd_valid (int fd)	1000	fd_valid (int fd)
822	{	1001	{
823	#ifdef _WIN32	1002	#ifdef _WIN32
824	return _get_osfhandle (fd) != -1;	1003	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
825	#else	1004	#else
826	return fcntl (fd, F_GETFD) != -1;	1005	return fcntl (fd, F_GETFD) != -1;
827	#endif	1006	#endif
828	}	1007	}
829		1008
…		…
847		1026
848	for (fd = anfdmax; fd--; )	1027	for (fd = anfdmax; fd--; )
849	if (anfds [fd].events)	1028	if (anfds [fd].events)
850	{	1029	{
851	fd_kill (EV_A_ fd);	1030	fd_kill (EV_A_ fd);
852	return;	1031	break;
853	}	1032	}
854	}	1033	}
855		1034
856	/* usually called after fork if backend needs to re-arm all fds from scratch */	1035	/* usually called after fork if backend needs to re-arm all fds from scratch */
857	static void noinline	1036	static void noinline
…		…
862	for (fd = 0; fd < anfdmax; ++fd)	1041	for (fd = 0; fd < anfdmax; ++fd)
863	if (anfds [fd].events)	1042	if (anfds [fd].events)
864	{	1043	{
865	anfds [fd].events = 0;	1044	anfds [fd].events = 0;
866	anfds [fd].emask = 0;	1045	anfds [fd].emask = 0;
867	fd_change (EV_A_ fd, EV__IOFDSET | 1);	1046	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
868	}	1047	}
		1048	}
		1049
		1050	/* used to prepare libev internal fd's */
		1051	/* this is not fork-safe */
		1052	inline_speed void
		1053	fd_intern (int fd)
		1054	{
		1055	#ifdef _WIN32
		1056	unsigned long arg = 1;
		1057	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
		1058	#else
		1059	fcntl (fd, F_SETFD, FD_CLOEXEC);
		1060	fcntl (fd, F_SETFL, O_NONBLOCK);
		1061	#endif
869	}	1062	}
870		1063
871	/*****************************************************************************/	1064	/*****************************************************************************/
872		1065
873	/*	1066	/*
…		…
947		1140
948	for (;;)	1141	for (;;)
949	{	1142	{
950	int c = k << 1;	1143	int c = k << 1;
951		1144
952	if (c > N + HEAP0 - 1)	1145	if (c >= N + HEAP0)
953	break;	1146	break;
954		1147
955	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1148	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
956	? 1 : 0;	1149	? 1 : 0;
957		1150
…		…
989		1182
990	heap [k] = he;	1183	heap [k] = he;
991	ev_active (ANHE_w (he)) = k;	1184	ev_active (ANHE_w (he)) = k;
992	}	1185	}
993		1186
		1187	/* move an element suitably so it is in a correct place */
994	inline_size void	1188	inline_size void
995	adjustheap (ANHE *heap, int N, int k)	1189	adjustheap (ANHE *heap, int N, int k)
996	{	1190	{
997	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1191	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
998	upheap (heap, k);	1192	upheap (heap, k);
999	else	1193	else
1000	downheap (heap, N, k);	1194	downheap (heap, N, k);
1001	}	1195	}
1002		1196
…		…
1012	upheap (heap, i + HEAP0);	1206	upheap (heap, i + HEAP0);
1013	}	1207	}
1014		1208
1015	/*****************************************************************************/	1209	/*****************************************************************************/
1016		1210
		1211	/* associate signal watchers to a signal signal */
1017	typedef struct	1212	typedef struct
1018	{	1213	{
		1214	EV_ATOMIC_T pending;
		1215	#if EV_MULTIPLICITY
		1216	EV_P;
		1217	#endif
1019	WL head;	1218	WL head;
1020	EV_ATOMIC_T gotsig;
1021	} ANSIG;	1219	} ANSIG;
1022		1220
1023	static ANSIG *signals;	1221	static ANSIG signals [EV_NSIG - 1];
1024	static int signalmax;
1025
1026	static EV_ATOMIC_T gotsig;
1027		1222
1028	/*****************************************************************************/	1223	/*****************************************************************************/
1029		1224
1030	inline_speed void	1225	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1031	fd_intern (int fd)
1032	{
1033	#ifdef _WIN32
1034	unsigned long arg = 1;
1035	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1036	#else
1037	fcntl (fd, F_SETFD, FD_CLOEXEC);
1038	fcntl (fd, F_SETFL, O_NONBLOCK);
1039	#endif
1040	}
1041		1226
1042	static void noinline	1227	static void noinline
1043	evpipe_init (EV_P)	1228	evpipe_init (EV_P)
1044	{	1229	{
1045	if (!ev_is_active (&pipeev))	1230	if (!ev_is_active (&pipe_w))
1046	{	1231	{
1047	#if EV_USE_EVENTFD	1232	# if EV_USE_EVENTFD
		1233	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1234	if (evfd < 0 && errno == EINVAL)
1048	if ((evfd = eventfd (0, 0)) >= 0)	1235	evfd = eventfd (0, 0);
		1236
		1237	if (evfd >= 0)
1049	{	1238	{
1050	evpipe [0] = -1;	1239	evpipe [0] = -1;
1051	fd_intern (evfd);	1240	fd_intern (evfd); /* doing it twice doesn't hurt */
1052	ev_io_set (&pipeev, evfd, EV_READ);	1241	ev_io_set (&pipe_w, evfd, EV_READ);
1053	}	1242	}
1054	else	1243	else
1055	#endif	1244	# endif
1056	{	1245	{
1057	while (pipe (evpipe))	1246	while (pipe (evpipe))
1058	ev_syserr ("(libev) error creating signal/async pipe");	1247	ev_syserr ("(libev) error creating signal/async pipe");
1059		1248
1060	fd_intern (evpipe [0]);	1249	fd_intern (evpipe [0]);
1061	fd_intern (evpipe [1]);	1250	fd_intern (evpipe [1]);
1062	ev_io_set (&pipeev, evpipe [0], EV_READ);	1251	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1063	}	1252	}
1064		1253
1065	ev_io_start (EV_A_ &pipeev);	1254	ev_io_start (EV_A_ &pipe_w);
1066	ev_unref (EV_A); /* watcher should not keep loop alive */	1255	ev_unref (EV_A); /* watcher should not keep loop alive */
1067	}	1256	}
1068	}	1257	}
1069		1258
1070	inline_size void	1259	inline_size void
1071	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1260	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1072	{	1261	{
1073	if (!*flag)	1262	if (!*flag)
1074	{	1263	{
1075	int old_errno = errno; /* save errno because write might clobber it */	1264	int old_errno = errno; /* save errno because write might clobber it */
		1265	char dummy;
1076		1266
1077	*flag = 1;	1267	*flag = 1;
1078		1268
1079	#if EV_USE_EVENTFD	1269	#if EV_USE_EVENTFD
1080	if (evfd >= 0)	1270	if (evfd >= 0)
…		…
1082	uint64_t counter = 1;	1272	uint64_t counter = 1;
1083	write (evfd, &counter, sizeof (uint64_t));	1273	write (evfd, &counter, sizeof (uint64_t));
1084	}	1274	}
1085	else	1275	else
1086	#endif	1276	#endif
1087	write (evpipe [1], &old_errno, 1);	1277	write (evpipe [1], &dummy, 1);
1088		1278
1089	errno = old_errno;	1279	errno = old_errno;
1090	}	1280	}
1091	}	1281	}
1092		1282
		1283	/* called whenever the libev signal pipe */
		1284	/* got some events (signal, async) */
1093	static void	1285	static void
1094	pipecb (EV_P_ ev_io *iow, int revents)	1286	pipecb (EV_P_ ev_io *iow, int revents)
1095	{	1287	{
		1288	int i;
		1289
1096	#if EV_USE_EVENTFD	1290	#if EV_USE_EVENTFD
1097	if (evfd >= 0)	1291	if (evfd >= 0)
1098	{	1292	{
1099	uint64_t counter;	1293	uint64_t counter;
1100	read (evfd, &counter, sizeof (uint64_t));	1294	read (evfd, &counter, sizeof (uint64_t));
…		…
1104	{	1298	{
1105	char dummy;	1299	char dummy;
1106	read (evpipe [0], &dummy, 1);	1300	read (evpipe [0], &dummy, 1);
1107	}	1301	}
1108		1302
1109	if (gotsig && ev_is_default_loop (EV_A))	1303	if (sig_pending)
1110	{	1304	{
1111	int signum;	1305	sig_pending = 0;
1112	gotsig = 0;
1113		1306
1114	for (signum = signalmax; signum--; )	1307	for (i = EV_NSIG - 1; i--; )
1115	if (signals [signum].gotsig)	1308	if (expect_false (signals [i].pending))
1116	ev_feed_signal_event (EV_A_ signum + 1);	1309	ev_feed_signal_event (EV_A_ i + 1);
1117	}	1310	}
1118		1311
1119	#if EV_ASYNC_ENABLE	1312	#if EV_ASYNC_ENABLE
1120	if (gotasync)	1313	if (async_pending)
1121	{	1314	{
1122	int i;	1315	async_pending = 0;
1123	gotasync = 0;
1124		1316
1125	for (i = asynccnt; i--; )	1317	for (i = asynccnt; i--; )
1126	if (asyncs [i]->sent)	1318	if (asyncs [i]->sent)
1127	{	1319	{
1128	asyncs [i]->sent = 0;	1320	asyncs [i]->sent = 0;
…		…
1136		1328
1137	static void	1329	static void
1138	ev_sighandler (int signum)	1330	ev_sighandler (int signum)
1139	{	1331	{
1140	#if EV_MULTIPLICITY	1332	#if EV_MULTIPLICITY
1141	struct ev_loop *loop = &default_loop_struct;	1333	EV_P = signals [signum - 1].loop;
1142	#endif	1334	#endif
1143		1335
1144	#if _WIN32	1336	#ifdef _WIN32
1145	signal (signum, ev_sighandler);	1337	signal (signum, ev_sighandler);
1146	#endif	1338	#endif
1147		1339
1148	signals [signum - 1].gotsig = 1;	1340	signals [signum - 1].pending = 1;
1149	evpipe_write (EV_A_ &gotsig);	1341	evpipe_write (EV_A_ &sig_pending);
1150	}	1342	}
1151		1343
1152	void noinline	1344	void noinline
1153	ev_feed_signal_event (EV_P_ int signum)	1345	ev_feed_signal_event (EV_P_ int signum)
1154	{	1346	{
1155	WL w;	1347	WL w;
1156		1348
		1349	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1350	return;
		1351
		1352	--signum;
		1353
1157	#if EV_MULTIPLICITY	1354	#if EV_MULTIPLICITY
1158	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1355	/* it is permissible to try to feed a signal to the wrong loop */
1159	#endif	1356	/* or, likely more useful, feeding a signal nobody is waiting for */
1160		1357
1161	--signum;	1358	if (expect_false (signals [signum].loop != EV_A))
1162
1163	if (signum < 0 || signum >= signalmax)
1164	return;	1359	return;
		1360	#endif
1165		1361
1166	signals [signum].gotsig = 0;	1362	signals [signum].pending = 0;
1167		1363
1168	for (w = signals [signum].head; w; w = w->next)	1364	for (w = signals [signum].head; w; w = w->next)
1169	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1365	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1170	}	1366	}
1171		1367
		1368	#if EV_USE_SIGNALFD
		1369	static void
		1370	sigfdcb (EV_P_ ev_io *iow, int revents)
		1371	{
		1372	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1373
		1374	for (;;)
		1375	{
		1376	ssize_t res = read (sigfd, si, sizeof (si));
		1377
		1378	/* not ISO-C, as res might be -1, but works with SuS */
		1379	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1380	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1381
		1382	if (res < (ssize_t)sizeof (si))
		1383	break;
		1384	}
		1385	}
		1386	#endif
		1387
		1388	#endif
		1389
1172	/*****************************************************************************/	1390	/*****************************************************************************/
1173		1391
		1392	#if EV_CHILD_ENABLE
1174	static WL childs [EV_PID_HASHSIZE];	1393	static WL childs [EV_PID_HASHSIZE];
1175
1176	#ifndef _WIN32
1177		1394
1178	static ev_signal childev;	1395	static ev_signal childev;
1179		1396
1180	#ifndef WIFCONTINUED	1397	#ifndef WIFCONTINUED
1181	# define WIFCONTINUED(status) 0	1398	# define WIFCONTINUED(status) 0
1182	#endif	1399	#endif
1183		1400
		1401	/* handle a single child status event */
1184	inline_speed void	1402	inline_speed void
1185	child_reap (EV_P_ int chain, int pid, int status)	1403	child_reap (EV_P_ int chain, int pid, int status)
1186	{	1404	{
1187	ev_child *w;	1405	ev_child *w;
1188	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1406	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
…		…
1202		1420
1203	#ifndef WCONTINUED	1421	#ifndef WCONTINUED
1204	# define WCONTINUED 0	1422	# define WCONTINUED 0
1205	#endif	1423	#endif
1206		1424
		1425	/* called on sigchld etc., calls waitpid */
1207	static void	1426	static void
1208	childcb (EV_P_ ev_signal *sw, int revents)	1427	childcb (EV_P_ ev_signal *sw, int revents)
1209	{	1428	{
1210	int pid, status;	1429	int pid, status;
1211		1430
…		…
1318	ev_backend (EV_P)	1537	ev_backend (EV_P)
1319	{	1538	{
1320	return backend;	1539	return backend;
1321	}	1540	}
1322		1541
		1542	#if EV_MINIMAL < 2
1323	unsigned int	1543	unsigned int
1324	ev_loop_count (EV_P)	1544	ev_loop_count (EV_P)
1325	{	1545	{
1326	return loop_count;	1546	return loop_count;
1327	}	1547	}
1328		1548
		1549	unsigned int
		1550	ev_loop_depth (EV_P)
		1551	{
		1552	return loop_depth;
		1553	}
		1554
1329	void	1555	void
1330	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1556	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1331	{	1557	{
1332	io_blocktime = interval;	1558	io_blocktime = interval;
1333	}	1559	}
…		…
1336	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1562	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1337	{	1563	{
1338	timeout_blocktime = interval;	1564	timeout_blocktime = interval;
1339	}	1565	}
1340		1566
		1567	void
		1568	ev_set_userdata (EV_P_ void *data)
		1569	{
		1570	userdata = data;
		1571	}
		1572
		1573	void *
		1574	ev_userdata (EV_P)
		1575	{
		1576	return userdata;
		1577	}
		1578
		1579	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1580	{
		1581	invoke_cb = invoke_pending_cb;
		1582	}
		1583
		1584	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1585	{
		1586	release_cb = release;
		1587	acquire_cb = acquire;
		1588	}
		1589	#endif
		1590
		1591	/* initialise a loop structure, must be zero-initialised */
1341	static void noinline	1592	static void noinline
1342	loop_init (EV_P_ unsigned int flags)	1593	loop_init (EV_P_ unsigned int flags)
1343	{	1594	{
1344	if (!backend)	1595	if (!backend)
1345	{	1596	{
…		…
1361	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1612	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1362	have_monotonic = 1;	1613	have_monotonic = 1;
1363	}	1614	}
1364	#endif	1615	#endif
1365		1616
		1617	/* pid check not overridable via env */
		1618	#ifndef _WIN32
		1619	if (flags & EVFLAG_FORKCHECK)
		1620	curpid = getpid ();
		1621	#endif
		1622
		1623	if (!(flags & EVFLAG_NOENV)
		1624	&& !enable_secure ()
		1625	&& getenv ("LIBEV_FLAGS"))
		1626	flags = atoi (getenv ("LIBEV_FLAGS"));
		1627
1366	ev_rt_now = ev_time ();	1628	ev_rt_now = ev_time ();
1367	mn_now = get_clock ();	1629	mn_now = get_clock ();
1368	now_floor = mn_now;	1630	now_floor = mn_now;
1369	rtmn_diff = ev_rt_now - mn_now;	1631	rtmn_diff = ev_rt_now - mn_now;
		1632	#if EV_MINIMAL < 2
		1633	invoke_cb = ev_invoke_pending;
		1634	#endif
1370		1635
1371	io_blocktime = 0.;	1636	io_blocktime = 0.;
1372	timeout_blocktime = 0.;	1637	timeout_blocktime = 0.;
1373	backend = 0;	1638	backend = 0;
1374	backend_fd = -1;	1639	backend_fd = -1;
1375	gotasync = 0;	1640	sig_pending = 0;
		1641	#if EV_ASYNC_ENABLE
		1642	async_pending = 0;
		1643	#endif
1376	#if EV_USE_INOTIFY	1644	#if EV_USE_INOTIFY
1377	fs_fd = -2;	1645	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1378	#endif	1646	#endif
1379		1647	#if EV_USE_SIGNALFD
1380	/* pid check not overridable via env */	1648	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1381	#ifndef _WIN32
1382	if (flags & EVFLAG_FORKCHECK)
1383	curpid = getpid ();
1384	#endif	1649	#endif
1385
1386	if (!(flags & EVFLAG_NOENV)
1387	&& !enable_secure ()
1388	&& getenv ("LIBEV_FLAGS"))
1389	flags = atoi (getenv ("LIBEV_FLAGS"));
1390		1650
1391	if (!(flags & 0x0000ffffU))	1651	if (!(flags & 0x0000ffffU))
1392	flags |= ev_recommended_backends ();	1652	flags |= ev_recommended_backends ();
1393		1653
1394	#if EV_USE_PORT	1654	#if EV_USE_PORT
…		…
1405	#endif	1665	#endif
1406	#if EV_USE_SELECT	1666	#if EV_USE_SELECT
1407	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1667	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1408	#endif	1668	#endif
1409		1669
		1670	ev_prepare_init (&pending_w, pendingcb);
		1671
		1672	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1410	ev_init (&pipeev, pipecb);	1673	ev_init (&pipe_w, pipecb);
1411	ev_set_priority (&pipeev, EV_MAXPRI);	1674	ev_set_priority (&pipe_w, EV_MAXPRI);
		1675	#endif
1412	}	1676	}
1413	}	1677	}
1414		1678
		1679	/* free up a loop structure */
1415	static void noinline	1680	static void noinline
1416	loop_destroy (EV_P)	1681	loop_destroy (EV_P)
1417	{	1682	{
1418	int i;	1683	int i;
1419		1684
1420	if (ev_is_active (&pipeev))	1685	if (ev_is_active (&pipe_w))
1421	{	1686	{
1422	ev_ref (EV_A); /* signal watcher */	1687	/*ev_ref (EV_A);*/
1423	ev_io_stop (EV_A_ &pipeev);	1688	/*ev_io_stop (EV_A_ &pipe_w);*/
1424		1689
1425	#if EV_USE_EVENTFD	1690	#if EV_USE_EVENTFD
1426	if (evfd >= 0)	1691	if (evfd >= 0)
1427	close (evfd);	1692	close (evfd);
1428	#endif	1693	#endif
1429		1694
1430	if (evpipe [0] >= 0)	1695	if (evpipe [0] >= 0)
1431	{	1696	{
1432	close (evpipe [0]);	1697	EV_WIN32_CLOSE_FD (evpipe [0]);
1433	close (evpipe [1]);	1698	EV_WIN32_CLOSE_FD (evpipe [1]);
1434	}	1699	}
1435	}	1700	}
		1701
		1702	#if EV_USE_SIGNALFD
		1703	if (ev_is_active (&sigfd_w))
		1704	close (sigfd);
		1705	#endif
1436		1706
1437	#if EV_USE_INOTIFY	1707	#if EV_USE_INOTIFY
1438	if (fs_fd >= 0)	1708	if (fs_fd >= 0)
1439	close (fs_fd);	1709	close (fs_fd);
1440	#endif	1710	#endif
…		…
1464	#if EV_IDLE_ENABLE	1734	#if EV_IDLE_ENABLE
1465	array_free (idle, [i]);	1735	array_free (idle, [i]);
1466	#endif	1736	#endif
1467	}	1737	}
1468		1738
1469	ev_free (anfds); anfdmax = 0;	1739	ev_free (anfds); anfds = 0; anfdmax = 0;
1470		1740
1471	/* have to use the microsoft-never-gets-it-right macro */	1741	/* have to use the microsoft-never-gets-it-right macro */
1472	array_free (rfeed, EMPTY);	1742	array_free (rfeed, EMPTY);
1473	array_free (fdchange, EMPTY);	1743	array_free (fdchange, EMPTY);
1474	array_free (timer, EMPTY);	1744	array_free (timer, EMPTY);
…		…
1505	#endif	1775	#endif
1506	#if EV_USE_INOTIFY	1776	#if EV_USE_INOTIFY
1507	infy_fork (EV_A);	1777	infy_fork (EV_A);
1508	#endif	1778	#endif
1509		1779
1510	if (ev_is_active (&pipeev))	1780	if (ev_is_active (&pipe_w))
1511	{	1781	{
1512	/* this "locks" the handlers against writing to the pipe */	1782	/* this "locks" the handlers against writing to the pipe */
1513	/* while we modify the fd vars */	1783	/* while we modify the fd vars */
1514	gotsig = 1;	1784	sig_pending = 1;
1515	#if EV_ASYNC_ENABLE	1785	#if EV_ASYNC_ENABLE
1516	gotasync = 1;	1786	async_pending = 1;
1517	#endif	1787	#endif
1518		1788
1519	ev_ref (EV_A);	1789	ev_ref (EV_A);
1520	ev_io_stop (EV_A_ &pipeev);	1790	ev_io_stop (EV_A_ &pipe_w);
1521		1791
1522	#if EV_USE_EVENTFD	1792	#if EV_USE_EVENTFD
1523	if (evfd >= 0)	1793	if (evfd >= 0)
1524	close (evfd);	1794	close (evfd);
1525	#endif	1795	#endif
1526		1796
1527	if (evpipe [0] >= 0)	1797	if (evpipe [0] >= 0)
1528	{	1798	{
1529	close (evpipe [0]);	1799	EV_WIN32_CLOSE_FD (evpipe [0]);
1530	close (evpipe [1]);	1800	EV_WIN32_CLOSE_FD (evpipe [1]);
1531	}	1801	}
1532		1802
		1803	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1533	evpipe_init (EV_A);	1804	evpipe_init (EV_A);
1534	/* now iterate over everything, in case we missed something */	1805	/* now iterate over everything, in case we missed something */
1535	pipecb (EV_A_ &pipeev, EV_READ);	1806	pipecb (EV_A_ &pipe_w, EV_READ);
		1807	#endif
1536	}	1808	}
1537		1809
1538	postfork = 0;	1810	postfork = 0;
1539	}	1811	}
1540		1812
1541	#if EV_MULTIPLICITY	1813	#if EV_MULTIPLICITY
1542		1814
1543	struct ev_loop *	1815	struct ev_loop *
1544	ev_loop_new (unsigned int flags)	1816	ev_loop_new (unsigned int flags)
1545	{	1817	{
1546	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1818	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1547		1819
1548	memset (loop, 0, sizeof (struct ev_loop));	1820	memset (EV_A, 0, sizeof (struct ev_loop));
1549
1550	loop_init (EV_A_ flags);	1821	loop_init (EV_A_ flags);
1551		1822
1552	if (ev_backend (EV_A))	1823	if (ev_backend (EV_A))
1553	return loop;	1824	return EV_A;
1554		1825
1555	return 0;	1826	return 0;
1556	}	1827	}
1557		1828
1558	void	1829	void
…		…
1565	void	1836	void
1566	ev_loop_fork (EV_P)	1837	ev_loop_fork (EV_P)
1567	{	1838	{
1568	postfork = 1; /* must be in line with ev_default_fork */	1839	postfork = 1; /* must be in line with ev_default_fork */
1569	}	1840	}
		1841	#endif /* multiplicity */
1570		1842
1571	#if EV_VERIFY	1843	#if EV_VERIFY
1572	static void noinline	1844	static void noinline
1573	verify_watcher (EV_P_ W w)	1845	verify_watcher (EV_P_ W w)
1574	{	1846	{
…		…
1602	verify_watcher (EV_A_ ws [cnt]);	1874	verify_watcher (EV_A_ ws [cnt]);
1603	}	1875	}
1604	}	1876	}
1605	#endif	1877	#endif
1606		1878
		1879	#if EV_MINIMAL < 2
1607	void	1880	void
1608	ev_loop_verify (EV_P)	1881	ev_loop_verify (EV_P)
1609	{	1882	{
1610	#if EV_VERIFY	1883	#if EV_VERIFY
1611	int i;	1884	int i;
…		…
1652	#if EV_ASYNC_ENABLE	1925	#if EV_ASYNC_ENABLE
1653	assert (asyncmax >= asynccnt);	1926	assert (asyncmax >= asynccnt);
1654	array_verify (EV_A_ (W *)asyncs, asynccnt);	1927	array_verify (EV_A_ (W *)asyncs, asynccnt);
1655	#endif	1928	#endif
1656		1929
		1930	#if EV_PREPARE_ENABLE
1657	assert (preparemax >= preparecnt);	1931	assert (preparemax >= preparecnt);
1658	array_verify (EV_A_ (W *)prepares, preparecnt);	1932	array_verify (EV_A_ (W *)prepares, preparecnt);
		1933	#endif
1659		1934
		1935	#if EV_CHECK_ENABLE
1660	assert (checkmax >= checkcnt);	1936	assert (checkmax >= checkcnt);
1661	array_verify (EV_A_ (W *)checks, checkcnt);	1937	array_verify (EV_A_ (W *)checks, checkcnt);
		1938	#endif
1662		1939
1663	# if 0	1940	# if 0
		1941	#if EV_CHILD_ENABLE
1664	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1942	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1665	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1943	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1666	# endif	1944	#endif
1667	#endif	1945	# endif
		1946	#endif
1668	}	1947	}
1669		1948	#endif
1670	#endif /* multiplicity */
1671		1949
1672	#if EV_MULTIPLICITY	1950	#if EV_MULTIPLICITY
1673	struct ev_loop *	1951	struct ev_loop *
1674	ev_default_loop_init (unsigned int flags)	1952	ev_default_loop_init (unsigned int flags)
1675	#else	1953	#else
…		…
1678	#endif	1956	#endif
1679	{	1957	{
1680	if (!ev_default_loop_ptr)	1958	if (!ev_default_loop_ptr)
1681	{	1959	{
1682	#if EV_MULTIPLICITY	1960	#if EV_MULTIPLICITY
1683	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1961	EV_P = ev_default_loop_ptr = &default_loop_struct;
1684	#else	1962	#else
1685	ev_default_loop_ptr = 1;	1963	ev_default_loop_ptr = 1;
1686	#endif	1964	#endif
1687		1965
1688	loop_init (EV_A_ flags);	1966	loop_init (EV_A_ flags);
1689		1967
1690	if (ev_backend (EV_A))	1968	if (ev_backend (EV_A))
1691	{	1969	{
1692	#ifndef _WIN32	1970	#if EV_CHILD_ENABLE
1693	ev_signal_init (&childev, childcb, SIGCHLD);	1971	ev_signal_init (&childev, childcb, SIGCHLD);
1694	ev_set_priority (&childev, EV_MAXPRI);	1972	ev_set_priority (&childev, EV_MAXPRI);
1695	ev_signal_start (EV_A_ &childev);	1973	ev_signal_start (EV_A_ &childev);
1696	ev_unref (EV_A); /* child watcher should not keep loop alive */	1974	ev_unref (EV_A); /* child watcher should not keep loop alive */
1697	#endif	1975	#endif
…		…
1705		1983
1706	void	1984	void
1707	ev_default_destroy (void)	1985	ev_default_destroy (void)
1708	{	1986	{
1709	#if EV_MULTIPLICITY	1987	#if EV_MULTIPLICITY
1710	struct ev_loop *loop = ev_default_loop_ptr;	1988	EV_P = ev_default_loop_ptr;
1711	#endif	1989	#endif
1712		1990
1713	ev_default_loop_ptr = 0;	1991	ev_default_loop_ptr = 0;
1714		1992
1715	#ifndef _WIN32	1993	#if EV_CHILD_ENABLE
1716	ev_ref (EV_A); /* child watcher */	1994	ev_ref (EV_A); /* child watcher */
1717	ev_signal_stop (EV_A_ &childev);	1995	ev_signal_stop (EV_A_ &childev);
1718	#endif	1996	#endif
1719		1997
1720	loop_destroy (EV_A);	1998	loop_destroy (EV_A);
…		…
1722		2000
1723	void	2001	void
1724	ev_default_fork (void)	2002	ev_default_fork (void)
1725	{	2003	{
1726	#if EV_MULTIPLICITY	2004	#if EV_MULTIPLICITY
1727	struct ev_loop *loop = ev_default_loop_ptr;	2005	EV_P = ev_default_loop_ptr;
1728	#endif	2006	#endif
1729		2007
1730	postfork = 1; /* must be in line with ev_loop_fork */	2008	postfork = 1; /* must be in line with ev_loop_fork */
1731	}	2009	}
1732		2010
…		…
1736	ev_invoke (EV_P_ void *w, int revents)	2014	ev_invoke (EV_P_ void *w, int revents)
1737	{	2015	{
1738	EV_CB_INVOKE ((W)w, revents);	2016	EV_CB_INVOKE ((W)w, revents);
1739	}	2017	}
1740		2018
1741	inline_speed void	2019	unsigned int
1742	call_pending (EV_P)	2020	ev_pending_count (EV_P)
		2021	{
		2022	int pri;
		2023	unsigned int count = 0;
		2024
		2025	for (pri = NUMPRI; pri--; )
		2026	count += pendingcnt [pri];
		2027
		2028	return count;
		2029	}
		2030
		2031	void noinline
		2032	ev_invoke_pending (EV_P)
1743	{	2033	{
1744	int pri;	2034	int pri;
1745		2035
1746	for (pri = NUMPRI; pri--; )	2036	for (pri = NUMPRI; pri--; )
1747	while (pendingcnt [pri])	2037	while (pendingcnt [pri])
1748	{	2038	{
1749	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	2039	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1750		2040
1751	if (expect_true (p->w))
1752	{
1753	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/	2041	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		2042	/* ^ this is no longer true, as pending_w could be here */
1754		2043
1755	p->w->pending = 0;	2044	p->w->pending = 0;
1756	EV_CB_INVOKE (p->w, p->events);	2045	EV_CB_INVOKE (p->w, p->events);
1757	EV_FREQUENT_CHECK;	2046	EV_FREQUENT_CHECK;
1758	}
1759	}	2047	}
1760	}	2048	}
1761		2049
1762	#if EV_IDLE_ENABLE	2050	#if EV_IDLE_ENABLE
		2051	/* make idle watchers pending. this handles the "call-idle */
		2052	/* only when higher priorities are idle" logic */
1763	inline_size void	2053	inline_size void
1764	idle_reify (EV_P)	2054	idle_reify (EV_P)
1765	{	2055	{
1766	if (expect_false (idleall))	2056	if (expect_false (idleall))
1767	{	2057	{
…		…
1780	}	2070	}
1781	}	2071	}
1782	}	2072	}
1783	#endif	2073	#endif
1784		2074
		2075	/* make timers pending */
1785	inline_size void	2076	inline_size void
1786	timers_reify (EV_P)	2077	timers_reify (EV_P)
1787	{	2078	{
1788	EV_FREQUENT_CHECK;	2079	EV_FREQUENT_CHECK;
1789		2080
…		…
1818	feed_reverse_done (EV_A_ EV_TIMEOUT);	2109	feed_reverse_done (EV_A_ EV_TIMEOUT);
1819	}	2110	}
1820	}	2111	}
1821		2112
1822	#if EV_PERIODIC_ENABLE	2113	#if EV_PERIODIC_ENABLE
		2114	/* make periodics pending */
1823	inline_size void	2115	inline_size void
1824	periodics_reify (EV_P)	2116	periodics_reify (EV_P)
1825	{	2117	{
1826	EV_FREQUENT_CHECK;	2118	EV_FREQUENT_CHECK;
1827		2119
…		…
1874		2166
1875	feed_reverse_done (EV_A_ EV_PERIODIC);	2167	feed_reverse_done (EV_A_ EV_PERIODIC);
1876	}	2168	}
1877	}	2169	}
1878		2170
		2171	/* simply recalculate all periodics */
		2172	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1879	static void noinline	2173	static void noinline
1880	periodics_reschedule (EV_P)	2174	periodics_reschedule (EV_P)
1881	{	2175	{
1882	int i;	2176	int i;
1883		2177
…		…
1896		2190
1897	reheap (periodics, periodiccnt);	2191	reheap (periodics, periodiccnt);
1898	}	2192	}
1899	#endif	2193	#endif
1900		2194
		2195	/* adjust all timers by a given offset */
1901	static void noinline	2196	static void noinline
1902	timers_reschedule (EV_P_ ev_tstamp adjust)	2197	timers_reschedule (EV_P_ ev_tstamp adjust)
1903	{	2198	{
1904	int i;	2199	int i;
1905		2200
…		…
1909	ANHE_w (*he)->at += adjust;	2204	ANHE_w (*he)->at += adjust;
1910	ANHE_at_cache (*he);	2205	ANHE_at_cache (*he);
1911	}	2206	}
1912	}	2207	}
1913		2208
		2209	/* fetch new monotonic and realtime times from the kernel */
		2210	/* also detect if there was a timejump, and act accordingly */
1914	inline_speed void	2211	inline_speed void
1915	time_update (EV_P_ ev_tstamp max_block)	2212	time_update (EV_P_ ev_tstamp max_block)
1916	{	2213	{
1917	int i;
1918
1919	#if EV_USE_MONOTONIC	2214	#if EV_USE_MONOTONIC
1920	if (expect_true (have_monotonic))	2215	if (expect_true (have_monotonic))
1921	{	2216	{
		2217	int i;
1922	ev_tstamp odiff = rtmn_diff;	2218	ev_tstamp odiff = rtmn_diff;
1923		2219
1924	mn_now = get_clock ();	2220	mn_now = get_clock ();
1925		2221
1926	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2222	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1976		2272
1977	mn_now = ev_rt_now;	2273	mn_now = ev_rt_now;
1978	}	2274	}
1979	}	2275	}
1980		2276
1981	static int loop_done;
1982
1983	void	2277	void
1984	ev_loop (EV_P_ int flags)	2278	ev_loop (EV_P_ int flags)
1985	{	2279	{
		2280	#if EV_MINIMAL < 2
		2281	++loop_depth;
		2282	#endif
		2283
		2284	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2285
1986	loop_done = EVUNLOOP_CANCEL;	2286	loop_done = EVUNLOOP_CANCEL;
1987		2287
1988	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2288	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1989		2289
1990	do	2290	do
1991	{	2291	{
1992	#if EV_VERIFY >= 2	2292	#if EV_VERIFY >= 2
1993	ev_loop_verify (EV_A);	2293	ev_loop_verify (EV_A);
…		…
2006	/* we might have forked, so queue fork handlers */	2306	/* we might have forked, so queue fork handlers */
2007	if (expect_false (postfork))	2307	if (expect_false (postfork))
2008	if (forkcnt)	2308	if (forkcnt)
2009	{	2309	{
2010	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2310	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2011	call_pending (EV_A);	2311	EV_INVOKE_PENDING;
2012	}	2312	}
2013	#endif	2313	#endif
2014		2314
		2315	#if EV_PREPARE_ENABLE
2015	/* queue prepare watchers (and execute them) */	2316	/* queue prepare watchers (and execute them) */
2016	if (expect_false (preparecnt))	2317	if (expect_false (preparecnt))
2017	{	2318	{
2018	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2319	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2019	call_pending (EV_A);	2320	EV_INVOKE_PENDING;
2020	}	2321	}
		2322	#endif
		2323
		2324	if (expect_false (loop_done))
		2325	break;
2021		2326
2022	/* we might have forked, so reify kernel state if necessary */	2327	/* we might have forked, so reify kernel state if necessary */
2023	if (expect_false (postfork))	2328	if (expect_false (postfork))
2024	loop_fork (EV_A);	2329	loop_fork (EV_A);
2025		2330
…		…
2031	ev_tstamp waittime = 0.;	2336	ev_tstamp waittime = 0.;
2032	ev_tstamp sleeptime = 0.;	2337	ev_tstamp sleeptime = 0.;
2033		2338
2034	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2339	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
2035	{	2340	{
		2341	/* remember old timestamp for io_blocktime calculation */
		2342	ev_tstamp prev_mn_now = mn_now;
		2343
2036	/* update time to cancel out callback processing overhead */	2344	/* update time to cancel out callback processing overhead */
2037	time_update (EV_A_ 1e100);	2345	time_update (EV_A_ 1e100);
		2346
		2347	waittime = MAX_BLOCKTIME;
2038		2348
2039	if (timercnt)	2349	if (timercnt)
2040	{	2350	{
2041	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;	2351	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
2042	if (waittime > to) waittime = to;	2352	if (waittime > to) waittime = to;
…		…
2048	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2358	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2049	if (waittime > to) waittime = to;	2359	if (waittime > to) waittime = to;
2050	}	2360	}
2051	#endif	2361	#endif
2052		2362
		2363	/* don't let timeouts decrease the waittime below timeout_blocktime */
2053	if (expect_false (waittime < timeout_blocktime))	2364	if (expect_false (waittime < timeout_blocktime))
2054	waittime = timeout_blocktime;	2365	waittime = timeout_blocktime;
2055		2366
2056	sleeptime = waittime - backend_fudge;	2367	/* extra check because io_blocktime is commonly 0 */
2057
2058	if (expect_true (sleeptime > io_blocktime))	2368	if (expect_false (io_blocktime))
2059	sleeptime = io_blocktime;
2060
2061	if (sleeptime)
2062	{	2369	{
		2370	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2371
		2372	if (sleeptime > waittime - backend_fudge)
		2373	sleeptime = waittime - backend_fudge;
		2374
		2375	if (expect_true (sleeptime > 0.))
		2376	{
2063	ev_sleep (sleeptime);	2377	ev_sleep (sleeptime);
2064	waittime -= sleeptime;	2378	waittime -= sleeptime;
		2379	}
2065	}	2380	}
2066	}	2381	}
2067		2382
		2383	#if EV_MINIMAL < 2
2068	++loop_count;	2384	++loop_count;
		2385	#endif
		2386	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2069	backend_poll (EV_A_ waittime);	2387	backend_poll (EV_A_ waittime);
		2388	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2070		2389
2071	/* update ev_rt_now, do magic */	2390	/* update ev_rt_now, do magic */
2072	time_update (EV_A_ waittime + sleeptime);	2391	time_update (EV_A_ waittime + sleeptime);
2073	}	2392	}
2074		2393
…		…
2081	#if EV_IDLE_ENABLE	2400	#if EV_IDLE_ENABLE
2082	/* queue idle watchers unless other events are pending */	2401	/* queue idle watchers unless other events are pending */
2083	idle_reify (EV_A);	2402	idle_reify (EV_A);
2084	#endif	2403	#endif
2085		2404
		2405	#if EV_CHECK_ENABLE
2086	/* queue check watchers, to be executed first */	2406	/* queue check watchers, to be executed first */
2087	if (expect_false (checkcnt))	2407	if (expect_false (checkcnt))
2088	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2408	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
		2409	#endif
2089		2410
2090	call_pending (EV_A);	2411	EV_INVOKE_PENDING;
2091	}	2412	}
2092	while (expect_true (	2413	while (expect_true (
2093	activecnt	2414	activecnt
2094	&& !loop_done	2415	&& !loop_done
2095	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2416	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2096	));	2417	));
2097		2418
2098	if (loop_done == EVUNLOOP_ONE)	2419	if (loop_done == EVUNLOOP_ONE)
2099	loop_done = EVUNLOOP_CANCEL;	2420	loop_done = EVUNLOOP_CANCEL;
		2421
		2422	#if EV_MINIMAL < 2
		2423	--loop_depth;
		2424	#endif
2100	}	2425	}
2101		2426
2102	void	2427	void
2103	ev_unloop (EV_P_ int how)	2428	ev_unloop (EV_P_ int how)
2104	{	2429	{
…		…
2133	ev_resume (EV_P)	2458	ev_resume (EV_P)
2134	{	2459	{
2135	ev_tstamp mn_prev = mn_now;	2460	ev_tstamp mn_prev = mn_now;
2136		2461
2137	ev_now_update (EV_A);	2462	ev_now_update (EV_A);
2138	printf ("update %f\n", mn_now - mn_prev);//D
2139	timers_reschedule (EV_A_ mn_now - mn_prev);	2463	timers_reschedule (EV_A_ mn_now - mn_prev);
		2464	#if EV_PERIODIC_ENABLE
		2465	/* TODO: really do this? */
2140	periodics_reschedule (EV_A);	2466	periodics_reschedule (EV_A);
		2467	#endif
2141	}	2468	}
2142		2469
2143	/*****************************************************************************/	2470	/*****************************************************************************/
		2471	/* singly-linked list management, used when the expected list length is short */
2144		2472
2145	inline_size void	2473	inline_size void
2146	wlist_add (WL *head, WL elem)	2474	wlist_add (WL *head, WL elem)
2147	{	2475	{
2148	elem->next = *head;	2476	elem->next = *head;
…		…
2152	inline_size void	2480	inline_size void
2153	wlist_del (WL *head, WL elem)	2481	wlist_del (WL *head, WL elem)
2154	{	2482	{
2155	while (*head)	2483	while (*head)
2156	{	2484	{
2157	if (*head == elem)	2485	if (expect_true (*head == elem))
2158	{	2486	{
2159	*head = elem->next;	2487	*head = elem->next;
2160	return;	2488	break;
2161	}	2489	}
2162		2490
2163	head = &(*head)->next;	2491	head = &(*head)->next;
2164	}	2492	}
2165	}	2493	}
2166		2494
		2495	/* internal, faster, version of ev_clear_pending */
2167	inline_speed void	2496	inline_speed void
2168	clear_pending (EV_P_ W w)	2497	clear_pending (EV_P_ W w)
2169	{	2498	{
2170	if (w->pending)	2499	if (w->pending)
2171	{	2500	{
2172	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2501	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2173	w->pending = 0;	2502	w->pending = 0;
2174	}	2503	}
2175	}	2504	}
2176		2505
2177	int	2506	int
…		…
2181	int pending = w_->pending;	2510	int pending = w_->pending;
2182		2511
2183	if (expect_true (pending))	2512	if (expect_true (pending))
2184	{	2513	{
2185	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2514	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2515	p->w = (W)&pending_w;
2186	w_->pending = 0;	2516	w_->pending = 0;
2187	p->w = 0;
2188	return p->events;	2517	return p->events;
2189	}	2518	}
2190	else	2519	else
2191	return 0;	2520	return 0;
2192	}	2521	}
2193		2522
2194	inline_size void	2523	inline_size void
2195	pri_adjust (EV_P_ W w)	2524	pri_adjust (EV_P_ W w)
2196	{	2525	{
2197	int pri = w->priority;	2526	int pri = ev_priority (w);
2198	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2527	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2199	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2528	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2200	w->priority = pri;	2529	ev_set_priority (w, pri);
2201	}	2530	}
2202		2531
2203	inline_speed void	2532	inline_speed void
2204	ev_start (EV_P_ W w, int active)	2533	ev_start (EV_P_ W w, int active)
2205	{	2534	{
…		…
2224		2553
2225	if (expect_false (ev_is_active (w)))	2554	if (expect_false (ev_is_active (w)))
2226	return;	2555	return;
2227		2556
2228	assert (("libev: ev_io_start called with negative fd", fd >= 0));	2557	assert (("libev: ev_io_start called with negative fd", fd >= 0));
2229	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));	2558	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2230		2559
2231	EV_FREQUENT_CHECK;	2560	EV_FREQUENT_CHECK;
2232		2561
2233	ev_start (EV_A_ (W)w, 1);	2562	ev_start (EV_A_ (W)w, 1);
2234	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2563	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2235	wlist_add (&anfds[fd].head, (WL)w);	2564	wlist_add (&anfds[fd].head, (WL)w);
2236		2565
2237	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);	2566	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2238	w->events &= ~EV__IOFDSET;	2567	w->events &= ~EV__IOFDSET;
2239		2568
2240	EV_FREQUENT_CHECK;	2569	EV_FREQUENT_CHECK;
2241	}	2570	}
2242		2571
…		…
2304	timers [active] = timers [timercnt + HEAP0];	2633	timers [active] = timers [timercnt + HEAP0];
2305	adjustheap (timers, timercnt, active);	2634	adjustheap (timers, timercnt, active);
2306	}	2635	}
2307	}	2636	}
2308		2637
2309	EV_FREQUENT_CHECK;
2310
2311	ev_at (w) -= mn_now;	2638	ev_at (w) -= mn_now;
2312		2639
2313	ev_stop (EV_A_ (W)w);	2640	ev_stop (EV_A_ (W)w);
		2641
		2642	EV_FREQUENT_CHECK;
2314	}	2643	}
2315		2644
2316	void noinline	2645	void noinline
2317	ev_timer_again (EV_P_ ev_timer *w)	2646	ev_timer_again (EV_P_ ev_timer *w)
2318	{	2647	{
…		…
2336	}	2665	}
2337		2666
2338	EV_FREQUENT_CHECK;	2667	EV_FREQUENT_CHECK;
2339	}	2668	}
2340		2669
		2670	ev_tstamp
		2671	ev_timer_remaining (EV_P_ ev_timer *w)
		2672	{
		2673	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2674	}
		2675
2341	#if EV_PERIODIC_ENABLE	2676	#if EV_PERIODIC_ENABLE
2342	void noinline	2677	void noinline
2343	ev_periodic_start (EV_P_ ev_periodic *w)	2678	ev_periodic_start (EV_P_ ev_periodic *w)
2344	{	2679	{
2345	if (expect_false (ev_is_active (w)))	2680	if (expect_false (ev_is_active (w)))
…		…
2391	periodics [active] = periodics [periodiccnt + HEAP0];	2726	periodics [active] = periodics [periodiccnt + HEAP0];
2392	adjustheap (periodics, periodiccnt, active);	2727	adjustheap (periodics, periodiccnt, active);
2393	}	2728	}
2394	}	2729	}
2395		2730
2396	EV_FREQUENT_CHECK;
2397
2398	ev_stop (EV_A_ (W)w);	2731	ev_stop (EV_A_ (W)w);
		2732
		2733	EV_FREQUENT_CHECK;
2399	}	2734	}
2400		2735
2401	void noinline	2736	void noinline
2402	ev_periodic_again (EV_P_ ev_periodic *w)	2737	ev_periodic_again (EV_P_ ev_periodic *w)
2403	{	2738	{
…		…
2409		2744
2410	#ifndef SA_RESTART	2745	#ifndef SA_RESTART
2411	# define SA_RESTART 0	2746	# define SA_RESTART 0
2412	#endif	2747	#endif
2413		2748
		2749	#if EV_SIGNAL_ENABLE
		2750
2414	void noinline	2751	void noinline
2415	ev_signal_start (EV_P_ ev_signal *w)	2752	ev_signal_start (EV_P_ ev_signal *w)
2416	{	2753	{
2417	#if EV_MULTIPLICITY
2418	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2419	#endif
2420	if (expect_false (ev_is_active (w)))	2754	if (expect_false (ev_is_active (w)))
2421	return;	2755	return;
2422		2756
2423	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2757	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2424		2758
2425	evpipe_init (EV_A);	2759	#if EV_MULTIPLICITY
		2760	assert (("libev: a signal must not be attached to two different loops",
		2761	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2426		2762
2427	EV_FREQUENT_CHECK;	2763	signals [w->signum - 1].loop = EV_A;
		2764	#endif
2428		2765
		2766	EV_FREQUENT_CHECK;
		2767
		2768	#if EV_USE_SIGNALFD
		2769	if (sigfd == -2)
2429	{	2770	{
2430	#ifndef _WIN32	2771	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2431	sigset_t full, prev;	2772	if (sigfd < 0 && errno == EINVAL)
2432	sigfillset (&full);	2773	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2433	sigprocmask (SIG_SETMASK, &full, &prev);
2434	#endif
2435		2774
2436	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);	2775	if (sigfd >= 0)
		2776	{
		2777	fd_intern (sigfd); /* doing it twice will not hurt */
2437		2778
2438	#ifndef _WIN32	2779	sigemptyset (&sigfd_set);
2439	sigprocmask (SIG_SETMASK, &prev, 0);	2780
2440	#endif	2781	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2782	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2783	ev_io_start (EV_A_ &sigfd_w);
		2784	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2785	}
2441	}	2786	}
		2787
		2788	if (sigfd >= 0)
		2789	{
		2790	/* TODO: check .head */
		2791	sigaddset (&sigfd_set, w->signum);
		2792	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2793
		2794	signalfd (sigfd, &sigfd_set, 0);
		2795	}
		2796	#endif
2442		2797
2443	ev_start (EV_A_ (W)w, 1);	2798	ev_start (EV_A_ (W)w, 1);
2444	wlist_add (&signals [w->signum - 1].head, (WL)w);	2799	wlist_add (&signals [w->signum - 1].head, (WL)w);
2445		2800
2446	if (!((WL)w)->next)	2801	if (!((WL)w)->next)
		2802	# if EV_USE_SIGNALFD
		2803	if (sigfd < 0) /*TODO*/
		2804	# endif
2447	{	2805	{
2448	#if _WIN32	2806	# ifdef _WIN32
		2807	evpipe_init (EV_A);
		2808
2449	signal (w->signum, ev_sighandler);	2809	signal (w->signum, ev_sighandler);
2450	#else	2810	# else
2451	struct sigaction sa;	2811	struct sigaction sa;
		2812
		2813	evpipe_init (EV_A);
		2814
2452	sa.sa_handler = ev_sighandler;	2815	sa.sa_handler = ev_sighandler;
2453	sigfillset (&sa.sa_mask);	2816	sigfillset (&sa.sa_mask);
2454	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2817	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2455	sigaction (w->signum, &sa, 0);	2818	sigaction (w->signum, &sa, 0);
		2819
		2820	sigemptyset (&sa.sa_mask);
		2821	sigaddset (&sa.sa_mask, w->signum);
		2822	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2456	#endif	2823	#endif
2457	}	2824	}
2458		2825
2459	EV_FREQUENT_CHECK;	2826	EV_FREQUENT_CHECK;
2460	}	2827	}
2461		2828
2462	void noinline	2829	void noinline
…		…
2470		2837
2471	wlist_del (&signals [w->signum - 1].head, (WL)w);	2838	wlist_del (&signals [w->signum - 1].head, (WL)w);
2472	ev_stop (EV_A_ (W)w);	2839	ev_stop (EV_A_ (W)w);
2473		2840
2474	if (!signals [w->signum - 1].head)	2841	if (!signals [w->signum - 1].head)
		2842	{
		2843	#if EV_MULTIPLICITY
		2844	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2845	#endif
		2846	#if EV_USE_SIGNALFD
		2847	if (sigfd >= 0)
		2848	{
		2849	sigset_t ss;
		2850
		2851	sigemptyset (&ss);
		2852	sigaddset (&ss, w->signum);
		2853	sigdelset (&sigfd_set, w->signum);
		2854
		2855	signalfd (sigfd, &sigfd_set, 0);
		2856	sigprocmask (SIG_UNBLOCK, &ss, 0);
		2857	}
		2858	else
		2859	#endif
2475	signal (w->signum, SIG_DFL);	2860	signal (w->signum, SIG_DFL);
		2861	}
2476		2862
2477	EV_FREQUENT_CHECK;	2863	EV_FREQUENT_CHECK;
2478	}	2864	}
		2865
		2866	#endif
		2867
		2868	#if EV_CHILD_ENABLE
2479		2869
2480	void	2870	void
2481	ev_child_start (EV_P_ ev_child *w)	2871	ev_child_start (EV_P_ ev_child *w)
2482	{	2872	{
2483	#if EV_MULTIPLICITY	2873	#if EV_MULTIPLICITY
…		…
2507	ev_stop (EV_A_ (W)w);	2897	ev_stop (EV_A_ (W)w);
2508		2898
2509	EV_FREQUENT_CHECK;	2899	EV_FREQUENT_CHECK;
2510	}	2900	}
2511		2901
		2902	#endif
		2903
2512	#if EV_STAT_ENABLE	2904	#if EV_STAT_ENABLE
2513		2905
2514	# ifdef _WIN32	2906	# ifdef _WIN32
2515	# undef lstat	2907	# undef lstat
2516	# define lstat(a,b) _stati64 (a,b)	2908	# define lstat(a,b) _stati64 (a,b)
…		…
2521	#define MIN_STAT_INTERVAL 0.1074891	2913	#define MIN_STAT_INTERVAL 0.1074891
2522		2914
2523	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2915	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2524		2916
2525	#if EV_USE_INOTIFY	2917	#if EV_USE_INOTIFY
2526	# define EV_INOTIFY_BUFSIZE 8192	2918
		2919	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		2920	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2527		2921
2528	static void noinline	2922	static void noinline
2529	infy_add (EV_P_ ev_stat *w)	2923	infy_add (EV_P_ ev_stat *w)
2530	{	2924	{
2531	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);	2925	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);
2532		2926
2533	if (w->wd < 0)	2927	if (w->wd >= 0)
		2928	{
		2929	struct statfs sfs;
		2930
		2931	/* now local changes will be tracked by inotify, but remote changes won't */
		2932	/* unless the filesystem is known to be local, we therefore still poll */
		2933	/* also do poll on <2.6.25, but with normal frequency */
		2934
		2935	if (!fs_2625)
		2936	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2937	else if (!statfs (w->path, &sfs)
		2938	&& (sfs.f_type == 0x1373 /* devfs */
		2939	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2940	|| sfs.f_type == 0x3153464a /* jfs */
		2941	|| sfs.f_type == 0x52654973 /* reiser3 */
		2942	|| sfs.f_type == 0x01021994 /* tempfs */
		2943	|| sfs.f_type == 0x58465342 /* xfs */))
		2944	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2945	else
		2946	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2534	{	2947	}
		2948	else
		2949	{
		2950	/* can't use inotify, continue to stat */
2535	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	2951	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2536	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2537		2952
2538	/* monitor some parent directory for speedup hints */	2953	/* if path is not there, monitor some parent directory for speedup hints */
2539	/* note that exceeding the hardcoded path limit is not a correctness issue, */	2954	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2540	/* but an efficiency issue only */	2955	/* but an efficiency issue only */
2541	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2956	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2542	{	2957	{
2543	char path [4096];	2958	char path [4096];
…		…
2559	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2974	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2560	}	2975	}
2561	}	2976	}
2562		2977
2563	if (w->wd >= 0)	2978	if (w->wd >= 0)
2564	{
2565	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2979	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2566		2980
2567	/* now local changes will be tracked by inotify, but remote changes won't */	2981	/* now re-arm timer, if required */
2568	/* unless the filesystem it known to be local, we therefore still poll */	2982	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2569	/* also do poll on <2.6.25, but with normal frequency */
2570	struct statfs sfs;
2571
2572	if (fs_2625 && !statfs (w->path, &sfs))
2573	if (sfs.f_type == 0x1373 /* devfs */
2574	|| sfs.f_type == 0xEF53 /* ext2/3 */
2575	|| sfs.f_type == 0x3153464a /* jfs */
2576	|| sfs.f_type == 0x52654973 /* reiser3 */
2577	|| sfs.f_type == 0x01021994 /* tempfs */
2578	|| sfs.f_type == 0x58465342 /* xfs */)
2579	return;
2580
2581	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2582	ev_timer_again (EV_A_ &w->timer);	2983	ev_timer_again (EV_A_ &w->timer);
2583	}	2984	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2584	}	2985	}
2585		2986
2586	static void noinline	2987	static void noinline
2587	infy_del (EV_P_ ev_stat *w)	2988	infy_del (EV_P_ ev_stat *w)
2588	{	2989	{
…		…
2633		3034
2634	static void	3035	static void
2635	infy_cb (EV_P_ ev_io *w, int revents)	3036	infy_cb (EV_P_ ev_io *w, int revents)
2636	{	3037	{
2637	char buf [EV_INOTIFY_BUFSIZE];	3038	char buf [EV_INOTIFY_BUFSIZE];
2638	struct inotify_event *ev = (struct inotify_event *)buf;
2639	int ofs;	3039	int ofs;
2640	int len = read (fs_fd, buf, sizeof (buf));	3040	int len = read (fs_fd, buf, sizeof (buf));
2641		3041
2642	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	3042	for (ofs = 0; ofs < len; )
		3043	{
		3044	struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2643	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3045	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		3046	ofs += sizeof (struct inotify_event) + ev->len;
		3047	}
		3048	}
		3049
		3050	inline_size unsigned int
		3051	ev_linux_version (void)
		3052	{
		3053	struct utsname buf;
		3054	unsigned int v;
		3055	int i;
		3056	char *p = buf.release;
		3057
		3058	if (uname (&buf))
		3059	return 0;
		3060
		3061	for (i = 3+1; --i; )
		3062	{
		3063	unsigned int c = 0;
		3064
		3065	for (;;)
		3066	{
		3067	if (*p >= '0' && *p <= '9')
		3068	c = c * 10 + *p++ - '0';
		3069	else
		3070	{
		3071	p += *p == '.';
		3072	break;
		3073	}
		3074	}
		3075
		3076	v = (v << 8) | c;
		3077	}
		3078
		3079	return v;
2644	}	3080	}
2645		3081
2646	inline_size void	3082	inline_size void
2647	check_2625 (EV_P)	3083	ev_check_2625 (EV_P)
2648	{	3084	{
2649	/* kernels < 2.6.25 are borked	3085	/* kernels < 2.6.25 are borked
2650	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	3086	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2651	*/	3087	*/
2652	struct utsname buf;	3088	if (ev_linux_version () < 0x020619)
2653	int major, minor, micro;
2654
2655	if (uname (&buf))
2656	return;	3089	return;
2657		3090
2658	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2659	return;
2660
2661	if (major < 2
2662	|| (major == 2 && minor < 6)
2663	|| (major == 2 && minor == 6 && micro < 25))
2664	return;
2665
2666	fs_2625 = 1;	3091	fs_2625 = 1;
		3092	}
		3093
		3094	inline_size int
		3095	infy_newfd (void)
		3096	{
		3097	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3098	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3099	if (fd >= 0)
		3100	return fd;
		3101	#endif
		3102	return inotify_init ();
2667	}	3103	}
2668		3104
2669	inline_size void	3105	inline_size void
2670	infy_init (EV_P)	3106	infy_init (EV_P)
2671	{	3107	{
2672	if (fs_fd != -2)	3108	if (fs_fd != -2)
2673	return;	3109	return;
2674		3110
2675	fs_fd = -1;	3111	fs_fd = -1;
2676		3112
2677	check_2625 (EV_A);	3113	ev_check_2625 (EV_A);
2678		3114
2679	fs_fd = inotify_init ();	3115	fs_fd = infy_newfd ();
2680		3116
2681	if (fs_fd >= 0)	3117	if (fs_fd >= 0)
2682	{	3118	{
		3119	fd_intern (fs_fd);
2683	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3120	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2684	ev_set_priority (&fs_w, EV_MAXPRI);	3121	ev_set_priority (&fs_w, EV_MAXPRI);
2685	ev_io_start (EV_A_ &fs_w);	3122	ev_io_start (EV_A_ &fs_w);
		3123	ev_unref (EV_A);
2686	}	3124	}
2687	}	3125	}
2688		3126
2689	inline_size void	3127	inline_size void
2690	infy_fork (EV_P)	3128	infy_fork (EV_P)
…		…
2692	int slot;	3130	int slot;
2693		3131
2694	if (fs_fd < 0)	3132	if (fs_fd < 0)
2695	return;	3133	return;
2696		3134
		3135	ev_ref (EV_A);
		3136	ev_io_stop (EV_A_ &fs_w);
2697	close (fs_fd);	3137	close (fs_fd);
2698	fs_fd = inotify_init ();	3138	fs_fd = infy_newfd ();
		3139
		3140	if (fs_fd >= 0)
		3141	{
		3142	fd_intern (fs_fd);
		3143	ev_io_set (&fs_w, fs_fd, EV_READ);
		3144	ev_io_start (EV_A_ &fs_w);
		3145	ev_unref (EV_A);
		3146	}
2699		3147
2700	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3148	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2701	{	3149	{
2702	WL w_ = fs_hash [slot].head;	3150	WL w_ = fs_hash [slot].head;
2703	fs_hash [slot].head = 0;	3151	fs_hash [slot].head = 0;
…		…
2710	w->wd = -1;	3158	w->wd = -1;
2711		3159
2712	if (fs_fd >= 0)	3160	if (fs_fd >= 0)
2713	infy_add (EV_A_ w); /* re-add, no matter what */	3161	infy_add (EV_A_ w); /* re-add, no matter what */
2714	else	3162	else
		3163	{
		3164	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3165	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2715	ev_timer_again (EV_A_ &w->timer);	3166	ev_timer_again (EV_A_ &w->timer);
		3167	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3168	}
2716	}	3169	}
2717	}	3170	}
2718	}	3171	}
2719		3172
2720	#endif	3173	#endif
…		…
2737	static void noinline	3190	static void noinline
2738	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3191	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2739	{	3192	{
2740	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	3193	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2741		3194
2742	/* we copy this here each the time so that */	3195	ev_statdata prev = w->attr;
2743	/* prev has the old value when the callback gets invoked */
2744	w->prev = w->attr;
2745	ev_stat_stat (EV_A_ w);	3196	ev_stat_stat (EV_A_ w);
2746		3197
2747	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3198	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2748	if (	3199	if (
2749	w->prev.st_dev != w->attr.st_dev	3200	prev.st_dev != w->attr.st_dev
2750	|| w->prev.st_ino != w->attr.st_ino	3201	|| prev.st_ino != w->attr.st_ino
2751	|| w->prev.st_mode != w->attr.st_mode	3202	|| prev.st_mode != w->attr.st_mode
2752	|| w->prev.st_nlink != w->attr.st_nlink	3203	|| prev.st_nlink != w->attr.st_nlink
2753	|| w->prev.st_uid != w->attr.st_uid	3204	|| prev.st_uid != w->attr.st_uid
2754	|| w->prev.st_gid != w->attr.st_gid	3205	|| prev.st_gid != w->attr.st_gid
2755	|| w->prev.st_rdev != w->attr.st_rdev	3206	|| prev.st_rdev != w->attr.st_rdev
2756	|| w->prev.st_size != w->attr.st_size	3207	|| prev.st_size != w->attr.st_size
2757	|| w->prev.st_atime != w->attr.st_atime	3208	|| prev.st_atime != w->attr.st_atime
2758	|| w->prev.st_mtime != w->attr.st_mtime	3209	|| prev.st_mtime != w->attr.st_mtime
2759	|| w->prev.st_ctime != w->attr.st_ctime	3210	|| prev.st_ctime != w->attr.st_ctime
2760	) {	3211	) {
		3212	/* we only update w->prev on actual differences */
		3213	/* in case we test more often than invoke the callback, */
		3214	/* to ensure that prev is always different to attr */
		3215	w->prev = prev;
		3216
2761	#if EV_USE_INOTIFY	3217	#if EV_USE_INOTIFY
2762	if (fs_fd >= 0)	3218	if (fs_fd >= 0)
2763	{	3219	{
2764	infy_del (EV_A_ w);	3220	infy_del (EV_A_ w);
2765	infy_add (EV_A_ w);	3221	infy_add (EV_A_ w);
…		…
2790		3246
2791	if (fs_fd >= 0)	3247	if (fs_fd >= 0)
2792	infy_add (EV_A_ w);	3248	infy_add (EV_A_ w);
2793	else	3249	else
2794	#endif	3250	#endif
		3251	{
2795	ev_timer_again (EV_A_ &w->timer);	3252	ev_timer_again (EV_A_ &w->timer);
		3253	ev_unref (EV_A);
		3254	}
2796		3255
2797	ev_start (EV_A_ (W)w, 1);	3256	ev_start (EV_A_ (W)w, 1);
2798		3257
2799	EV_FREQUENT_CHECK;	3258	EV_FREQUENT_CHECK;
2800	}	3259	}
…		…
2809	EV_FREQUENT_CHECK;	3268	EV_FREQUENT_CHECK;
2810		3269
2811	#if EV_USE_INOTIFY	3270	#if EV_USE_INOTIFY
2812	infy_del (EV_A_ w);	3271	infy_del (EV_A_ w);
2813	#endif	3272	#endif
		3273
		3274	if (ev_is_active (&w->timer))
		3275	{
		3276	ev_ref (EV_A);
2814	ev_timer_stop (EV_A_ &w->timer);	3277	ev_timer_stop (EV_A_ &w->timer);
		3278	}
2815		3279
2816	ev_stop (EV_A_ (W)w);	3280	ev_stop (EV_A_ (W)w);
2817		3281
2818	EV_FREQUENT_CHECK;	3282	EV_FREQUENT_CHECK;
2819	}	3283	}
…		…
2864		3328
2865	EV_FREQUENT_CHECK;	3329	EV_FREQUENT_CHECK;
2866	}	3330	}
2867	#endif	3331	#endif
2868		3332
		3333	#if EV_PREPARE_ENABLE
2869	void	3334	void
2870	ev_prepare_start (EV_P_ ev_prepare *w)	3335	ev_prepare_start (EV_P_ ev_prepare *w)
2871	{	3336	{
2872	if (expect_false (ev_is_active (w)))	3337	if (expect_false (ev_is_active (w)))
2873	return;	3338	return;
…		…
2899		3364
2900	ev_stop (EV_A_ (W)w);	3365	ev_stop (EV_A_ (W)w);
2901		3366
2902	EV_FREQUENT_CHECK;	3367	EV_FREQUENT_CHECK;
2903	}	3368	}
		3369	#endif
2904		3370
		3371	#if EV_CHECK_ENABLE
2905	void	3372	void
2906	ev_check_start (EV_P_ ev_check *w)	3373	ev_check_start (EV_P_ ev_check *w)
2907	{	3374	{
2908	if (expect_false (ev_is_active (w)))	3375	if (expect_false (ev_is_active (w)))
2909	return;	3376	return;
…		…
2935		3402
2936	ev_stop (EV_A_ (W)w);	3403	ev_stop (EV_A_ (W)w);
2937		3404
2938	EV_FREQUENT_CHECK;	3405	EV_FREQUENT_CHECK;
2939	}	3406	}
		3407	#endif
2940		3408
2941	#if EV_EMBED_ENABLE	3409	#if EV_EMBED_ENABLE
2942	void noinline	3410	void noinline
2943	ev_embed_sweep (EV_P_ ev_embed *w)	3411	ev_embed_sweep (EV_P_ ev_embed *w)
2944	{	3412	{
…		…
2960	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3428	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2961	{	3429	{
2962	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3430	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2963		3431
2964	{	3432	{
2965	struct ev_loop *loop = w->other;	3433	EV_P = w->other;
2966		3434
2967	while (fdchangecnt)	3435	while (fdchangecnt)
2968	{	3436	{
2969	fd_reify (EV_A);	3437	fd_reify (EV_A);
2970	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3438	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
2978	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));	3446	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2979		3447
2980	ev_embed_stop (EV_A_ w);	3448	ev_embed_stop (EV_A_ w);
2981		3449
2982	{	3450	{
2983	struct ev_loop *loop = w->other;	3451	EV_P = w->other;
2984		3452
2985	ev_loop_fork (EV_A);	3453	ev_loop_fork (EV_A);
2986	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3454	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2987	}	3455	}
2988		3456
…		…
3002	{	3470	{
3003	if (expect_false (ev_is_active (w)))	3471	if (expect_false (ev_is_active (w)))
3004	return;	3472	return;
3005		3473
3006	{	3474	{
3007	struct ev_loop *loop = w->other;	3475	EV_P = w->other;
3008	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3476	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3009	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3477	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3010	}	3478	}
3011		3479
3012	EV_FREQUENT_CHECK;	3480	EV_FREQUENT_CHECK;
…		…
3039		3507
3040	ev_io_stop (EV_A_ &w->io);	3508	ev_io_stop (EV_A_ &w->io);
3041	ev_prepare_stop (EV_A_ &w->prepare);	3509	ev_prepare_stop (EV_A_ &w->prepare);
3042	ev_fork_stop (EV_A_ &w->fork);	3510	ev_fork_stop (EV_A_ &w->fork);
3043		3511
		3512	ev_stop (EV_A_ (W)w);
		3513
3044	EV_FREQUENT_CHECK;	3514	EV_FREQUENT_CHECK;
3045	}	3515	}
3046	#endif	3516	#endif
3047		3517
3048	#if EV_FORK_ENABLE	3518	#if EV_FORK_ENABLE
…		…
3124		3594
3125	void	3595	void
3126	ev_async_send (EV_P_ ev_async *w)	3596	ev_async_send (EV_P_ ev_async *w)
3127	{	3597	{
3128	w->sent = 1;	3598	w->sent = 1;
3129	evpipe_write (EV_A_ &gotasync);	3599	evpipe_write (EV_A_ &async_pending);
3130	}	3600	}
3131	#endif	3601	#endif
3132		3602
3133	/*****************************************************************************/	3603	/*****************************************************************************/
3134		3604
…		…
3198	}	3668	}
3199	}	3669	}
3200		3670
3201	/*****************************************************************************/	3671	/*****************************************************************************/
3202		3672
3203	#if 0	3673	#if EV_WALK_ENABLE
3204	void	3674	void
3205	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))	3675	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3206	{	3676	{
3207	int i, j;	3677	int i, j;
3208	ev_watcher_list *wl, *wn;	3678	ev_watcher_list *wl, *wn;
…		…
3224	#if EV_USE_INOTIFY	3694	#if EV_USE_INOTIFY
3225	if (ev_cb ((ev_io *)wl) == infy_cb)	3695	if (ev_cb ((ev_io *)wl) == infy_cb)
3226	;	3696	;
3227	else	3697	else
3228	#endif	3698	#endif
3229	if ((ev_io *)wl != &pipeev)	3699	if ((ev_io *)wl != &pipe_w)
3230	if (types & EV_IO)	3700	if (types & EV_IO)
3231	cb (EV_A_ EV_IO, wl);	3701	cb (EV_A_ EV_IO, wl);
3232		3702
3233	wl = wn;	3703	wl = wn;
3234	}	3704	}
…		…
3271	if (types & EV_ASYNC)	3741	if (types & EV_ASYNC)
3272	for (i = asynccnt; i--; )	3742	for (i = asynccnt; i--; )
3273	cb (EV_A_ EV_ASYNC, asyncs [i]);	3743	cb (EV_A_ EV_ASYNC, asyncs [i]);
3274	#endif	3744	#endif
3275		3745
		3746	#if EV_PREPARE_ENABLE
3276	if (types & EV_PREPARE)	3747	if (types & EV_PREPARE)
3277	for (i = preparecnt; i--; )	3748	for (i = preparecnt; i--; )
3278	#if EV_EMBED_ENABLE	3749	# if EV_EMBED_ENABLE
3279	if (ev_cb (prepares [i]) != embed_prepare_cb)	3750	if (ev_cb (prepares [i]) != embed_prepare_cb)
3280	#endif	3751	# endif
3281	cb (EV_A_ EV_PREPARE, prepares [i]);	3752	cb (EV_A_ EV_PREPARE, prepares [i]);
		3753	#endif
3282		3754
		3755	#if EV_CHECK_ENABLE
3283	if (types & EV_CHECK)	3756	if (types & EV_CHECK)
3284	for (i = checkcnt; i--; )	3757	for (i = checkcnt; i--; )
3285	cb (EV_A_ EV_CHECK, checks [i]);	3758	cb (EV_A_ EV_CHECK, checks [i]);
		3759	#endif
3286		3760
		3761	#if EV_SIGNAL_ENABLE
3287	if (types & EV_SIGNAL)	3762	if (types & EV_SIGNAL)
3288	for (i = 0; i < signalmax; ++i)	3763	for (i = 0; i < EV_NSIG - 1; ++i)
3289	for (wl = signals [i].head; wl; )	3764	for (wl = signals [i].head; wl; )
3290	{	3765	{
3291	wn = wl->next;	3766	wn = wl->next;
3292	cb (EV_A_ EV_SIGNAL, wl);	3767	cb (EV_A_ EV_SIGNAL, wl);
3293	wl = wn;	3768	wl = wn;
3294	}	3769	}
		3770	#endif
3295		3771
		3772	#if EV_CHILD_ENABLE
3296	if (types & EV_CHILD)	3773	if (types & EV_CHILD)
3297	for (i = EV_PID_HASHSIZE; i--; )	3774	for (i = EV_PID_HASHSIZE; i--; )
3298	for (wl = childs [i]; wl; )	3775	for (wl = childs [i]; wl; )
3299	{	3776	{
3300	wn = wl->next;	3777	wn = wl->next;
3301	cb (EV_A_ EV_CHILD, wl);	3778	cb (EV_A_ EV_CHILD, wl);
3302	wl = wn;	3779	wl = wn;
3303	}	3780	}
		3781	#endif
3304	/* EV_STAT 0x00001000 /* stat data changed */	3782	/* EV_STAT 0x00001000 /* stat data changed */
3305	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */	3783	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3306	}	3784	}
3307	#endif	3785	#endif
3308		3786

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