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Comparing libev/ev.c (file contents):
Revision 1.349 by sf-exg, Fri Oct 15 22:59:59 2010 UTC vs.
Revision 1.380 by root, Mon Jun 27 19:20:01 2011 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009,2010,2011 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	*
10	* 1. Redistributions of source code must retain the above copyright notice,	10	* 1. Redistributions of source code must retain the above copyright notice,
11	* this list of conditions and the following disclaimer.	11	* this list of conditions and the following disclaimer.
12	*	12	*
13	* 2. Redistributions in binary form must reproduce the above copyright	13	* 2. Redistributions in binary form must reproduce the above copyright
14	* notice, this list of conditions and the following disclaimer in the	14	* notice, this list of conditions and the following disclaimer in the
15	* documentation and/or other materials provided with the distribution.	15	* documentation and/or other materials provided with the distribution.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-	18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO	19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-	20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,	21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
…		…
35	* and other provisions required by the GPL. If you do not delete the	35	* and other provisions required by the GPL. If you do not delete the
36	* provisions above, a recipient may use your version of this file under	36	* provisions above, a recipient may use your version of this file under
37	* either the BSD or the GPL.	37	* either the BSD or the GPL.
38	*/	38	*/
39		39
40	#ifdef __cplusplus
41	extern "C" {
42	#endif
43
44	/* this big block deduces configuration from config.h */	40	/* this big block deduces configuration from config.h */
45	#ifndef EV_STANDALONE	41	#ifndef EV_STANDALONE
46	# ifdef EV_CONFIG_H	42	# ifdef EV_CONFIG_H
47	# include EV_CONFIG_H	43	# include EV_CONFIG_H
48	# else	44	# else
49	# include "config.h"	45	# include "config.h"
50	# endif	46	# endif
		47
		48	#if HAVE_FLOOR
		49	# ifndef EV_USE_FLOOR
		50	# define EV_USE_FLOOR 1
		51	# endif
		52	#endif
51		53
52	# if HAVE_CLOCK_SYSCALL	54	# if HAVE_CLOCK_SYSCALL
53	# ifndef EV_USE_CLOCK_SYSCALL	55	# ifndef EV_USE_CLOCK_SYSCALL
54	# define EV_USE_CLOCK_SYSCALL 1	56	# define EV_USE_CLOCK_SYSCALL 1
55	# ifndef EV_USE_REALTIME	57	# ifndef EV_USE_REALTIME
…		…
160	# define EV_USE_EVENTFD 0	162	# define EV_USE_EVENTFD 0
161	# endif	163	# endif
162		164
163	#endif	165	#endif
164		166
165	#include <math.h>
166	#include <stdlib.h>	167	#include <stdlib.h>
167	#include <string.h>	168	#include <string.h>
168	#include <fcntl.h>	169	#include <fcntl.h>
169	#include <stddef.h>	170	#include <stddef.h>
170		171
…		…
181	#ifdef EV_H	182	#ifdef EV_H
182	# include EV_H	183	# include EV_H
183	#else	184	#else
184	# include "ev.h"	185	# include "ev.h"
185	#endif	186	#endif
		187
		188	EV_CPP(extern "C" {)
186		189
187	#ifndef _WIN32	190	#ifndef _WIN32
188	# include <sys/time.h>	191	# include <sys/time.h>
189	# include <sys/wait.h>	192	# include <sys/wait.h>
190	# include <unistd.h>	193	# include <unistd.h>
…		…
234	/* to make it compile regardless, just remove the above line, */	237	/* to make it compile regardless, just remove the above line, */
235	/* but consider reporting it, too! :) */	238	/* but consider reporting it, too! :) */
236	# define EV_NSIG 65	239	# define EV_NSIG 65
237	#endif	240	#endif
238		241
		242	#ifndef EV_USE_FLOOR
		243	# define EV_USE_FLOOR 0
		244	#endif
		245
239	#ifndef EV_USE_CLOCK_SYSCALL	246	#ifndef EV_USE_CLOCK_SYSCALL
240	# if __linux && __GLIBC__ >= 2	247	# if __linux && __GLIBC__ >= 2
241	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS	248	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242	# else	249	# else
243	# define EV_USE_CLOCK_SYSCALL 0	250	# define EV_USE_CLOCK_SYSCALL 0
…		…
378	# undef EV_USE_INOTIFY	385	# undef EV_USE_INOTIFY
379	# define EV_USE_INOTIFY 0	386	# define EV_USE_INOTIFY 0
380	#endif	387	#endif
381		388
382	#if !EV_USE_NANOSLEEP	389	#if !EV_USE_NANOSLEEP
383	# ifndef _WIN32	390	/* hp-ux has it in sys/time.h, which we unconditionally include above */
		391	# if !defined(_WIN32) && !defined(__hpux)
384	# include <sys/select.h>	392	# include <sys/select.h>
385	# endif	393	# endif
386	#endif	394	#endif
387		395
388	#if EV_USE_INOTIFY	396	#if EV_USE_INOTIFY
389	# include <sys/utsname.h>
390	# include <sys/statfs.h>	397	# include <sys/statfs.h>
391	# include <sys/inotify.h>	398	# include <sys/inotify.h>
392	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */	399	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393	# ifndef IN_DONT_FOLLOW	400	# ifndef IN_DONT_FOLLOW
394	# undef EV_USE_INOTIFY	401	# undef EV_USE_INOTIFY
…		…
411	# define EFD_CLOEXEC O_CLOEXEC	418	# define EFD_CLOEXEC O_CLOEXEC
412	# else	419	# else
413	# define EFD_CLOEXEC 02000000	420	# define EFD_CLOEXEC 02000000
414	# endif	421	# endif
415	# endif	422	# endif
416	# ifdef __cplusplus
417	extern "C" {
418	# endif
419	int (eventfd) (unsigned int initval, int flags);	423	EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420	# ifdef __cplusplus
421	}
422	# endif
423	#endif	424	#endif
424		425
425	#if EV_USE_SIGNALFD	426	#if EV_USE_SIGNALFD
426	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	427	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427	# include <stdint.h>	428	# include <stdint.h>
…		…
433	# define SFD_CLOEXEC O_CLOEXEC	434	# define SFD_CLOEXEC O_CLOEXEC
434	# else	435	# else
435	# define SFD_CLOEXEC 02000000	436	# define SFD_CLOEXEC 02000000
436	# endif	437	# endif
437	# endif	438	# endif
438	# ifdef __cplusplus
439	extern "C" {
440	# endif
441	int signalfd (int fd, const sigset_t *mask, int flags);	439	EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
442		440
443	struct signalfd_siginfo	441	struct signalfd_siginfo
444	{	442	{
445	uint32_t ssi_signo;	443	uint32_t ssi_signo;
446	char pad[128 - sizeof (uint32_t)];	444	char pad[128 - sizeof (uint32_t)];
447	};	445	};
448	# ifdef __cplusplus
449	}
450	# endif
451	#endif	446	#endif
452		447
453	/**/	448	/**/
454		449
455	#if EV_VERIFY >= 3	450	#if EV_VERIFY >= 3
…		…
457	#else	452	#else
458	# define EV_FREQUENT_CHECK do { } while (0)	453	# define EV_FREQUENT_CHECK do { } while (0)
459	#endif	454	#endif
460		455
461	/*	456	/*
462	* This is used to avoid floating point rounding problems.	457	* This is used to work around floating point rounding problems.
463	* It is added to ev_rt_now when scheduling periodics
464	* to ensure progress, time-wise, even when rounding
465	* errors are against us.
466	* This value is good at least till the year 4000.	458	* This value is good at least till the year 4000.
467	* Better solutions welcome.
468	*/	459	*/
469	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	460	#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
		461	/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
470		462
471	#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) */
472	#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) */
473		465
474	#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)	466	#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
475	#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)	467	#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
476		468
477	#if __GNUC__ >= 4	469	/* the following are taken from libecb */
478	# define expect(expr,value) __builtin_expect ((expr),(value))	470	/* ecb.h start */
479	# define noinline __attribute__ ((noinline))	471
		472	/* many compilers define _GNUC_ to some versions but then only implement
		473	* what their idiot authors think are the "more important" extensions,
		474	* causing enourmous grief in return for some better fake benchmark numbers.
		475	* or so.
		476	* we try to detect these and simply assume they are not gcc - if they have
		477	* an issue with that they should have done it right in the first place.
		478	*/
		479	#ifndef ECB_GCC_VERSION
		480	#if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
		481	#define ECB_GCC_VERSION(major,minor) 0
		482	#else
		483	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
		484	#endif
		485	#endif
		486
		487	#if __cplusplus
		488	#define ecb_inline static inline
		489	#elif ECB_GCC_VERSION(2,5)
		490	#define ecb_inline static __inline__
		491	#elif ECB_C99
		492	#define ecb_inline static inline
480	#else	493	#else
481	# define expect(expr,value) (expr)	494	#define ecb_inline static
482	# define noinline
483	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
484	# define inline
485	# endif	495	#endif
486	#endif
487		496
		497	#if ECB_GCC_VERSION(3,1)
		498	#define ecb_attribute(attrlist) __attribute__(attrlist)
		499	#define ecb_is_constant(expr) __builtin_constant_p (expr)
		500	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
		501	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
		502	#else
		503	#define ecb_attribute(attrlist)
		504	#define ecb_is_constant(expr) 0
		505	#define ecb_expect(expr,value) (expr)
		506	#define ecb_prefetch(addr,rw,locality)
		507	#endif
		508
		509	#define ecb_noinline ecb_attribute ((__noinline__))
		510	#define ecb_noreturn ecb_attribute ((__noreturn__))
		511	#define ecb_unused ecb_attribute ((__unused__))
		512	#define ecb_const ecb_attribute ((__const__))
		513	#define ecb_pure ecb_attribute ((__pure__))
		514
		515	#if ECB_GCC_VERSION(4,3)
		516	#define ecb_artificial ecb_attribute ((__artificial__))
		517	#define ecb_hot ecb_attribute ((__hot__))
		518	#define ecb_cold ecb_attribute ((__cold__))
		519	#else
		520	#define ecb_artificial
		521	#define ecb_hot
		522	#define ecb_cold
		523	#endif
		524
		525	/* put around conditional expressions if you are very sure that the */
		526	/* expression is mostly true or mostly false. note that these return */
		527	/* booleans, not the expression. */
488	#define expect_false(expr) expect ((expr) != 0, 0)	528	#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
489	#define expect_true(expr) expect ((expr) != 0, 1)	529	#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
		530	/* ecb.h end */
		531
		532	#define expect_false(cond) ecb_expect_false (cond)
		533	#define expect_true(cond) ecb_expect_true (cond)
		534	#define noinline ecb_noinline
		535
490	#define inline_size static inline	536	#define inline_size ecb_inline
491		537
492	#if EV_FEATURE_CODE	538	#if EV_FEATURE_CODE
493	# define inline_speed static inline	539	# define inline_speed ecb_inline
494	#else	540	#else
495	# define inline_speed static noinline	541	# define inline_speed static noinline
496	#endif	542	#endif
497		543
498	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	544	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
…		…
537	# include "ev_win32.c"	583	# include "ev_win32.c"
538	#endif	584	#endif
539		585
540	/*****************************************************************************/	586	/*****************************************************************************/
541		587
		588	/* define a suitable floor function (only used by periodics atm) */
		589
		590	#if EV_USE_FLOOR
		591	# include <math.h>
		592	# define ev_floor(v) floor (v)
		593	#else
		594
		595	#include <float.h>
		596
		597	/* a floor() replacement function, should be independent of ev_tstamp type */
		598	static ev_tstamp noinline
		599	ev_floor (ev_tstamp v)
		600	{
		601	/* the choice of shift factor is not terribly important */
		602	#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
		603	const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
		604	#else
		605	const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
		606	#endif
		607
		608	/* argument too large for an unsigned long? */
		609	if (expect_false (v >= shift))
		610	{
		611	ev_tstamp f;
		612
		613	if (v == v - 1.)
		614	return v; /* very large number */
		615
		616	f = shift * ev_floor (v * (1. / shift));
		617	return f + ev_floor (v - f);
		618	}
		619
		620	/* special treatment for negative args? */
		621	if (expect_false (v < 0.))
		622	{
		623	ev_tstamp f = -ev_floor (-v);
		624
		625	return f - (f == v ? 0 : 1);
		626	}
		627
		628	/* fits into an unsigned long */
		629	return (unsigned long)v;
		630	}
		631
		632	#endif
		633
		634	/*****************************************************************************/
		635
		636	#ifdef __linux
		637	# include <sys/utsname.h>
		638	#endif
		639
		640	static unsigned int noinline ecb_cold
		641	ev_linux_version (void)
		642	{
		643	#ifdef __linux
		644	unsigned int v = 0;
		645	struct utsname buf;
		646	int i;
		647	char *p = buf.release;
		648
		649	if (uname (&buf))
		650	return 0;
		651
		652	for (i = 3+1; --i; )
		653	{
		654	unsigned int c = 0;
		655
		656	for (;;)
		657	{
		658	if (*p >= '0' && *p <= '9')
		659	c = c * 10 + *p++ - '0';
		660	else
		661	{
		662	p += *p == '.';
		663	break;
		664	}
		665	}
		666
		667	v = (v << 8) | c;
		668	}
		669
		670	return v;
		671	#else
		672	return 0;
		673	#endif
		674	}
		675
		676	/*****************************************************************************/
		677
542	#if EV_AVOID_STDIO	678	#if EV_AVOID_STDIO
543	static void noinline	679	static void noinline ecb_cold
544	ev_printerr (const char *msg)	680	ev_printerr (const char *msg)
545	{	681	{
546	write (STDERR_FILENO, msg, strlen (msg));	682	write (STDERR_FILENO, msg, strlen (msg));
547	}	683	}
548	#endif	684	#endif
549		685
550	static void (*syserr_cb)(const char *msg);	686	static void (*syserr_cb)(const char *msg);
551		687
552	void	688	void ecb_cold
553	ev_set_syserr_cb (void (*cb)(const char *msg))	689	ev_set_syserr_cb (void (*cb)(const char *msg))
554	{	690	{
555	syserr_cb = cb;	691	syserr_cb = cb;
556	}	692	}
557		693
558	static void noinline	694	static void noinline ecb_cold
559	ev_syserr (const char *msg)	695	ev_syserr (const char *msg)
560	{	696	{
561	if (!msg)	697	if (!msg)
562	msg = "(libev) system error";	698	msg = "(libev) system error";
563		699
564	if (syserr_cb)	700	if (syserr_cb)
565	syserr_cb (msg);	701	syserr_cb (msg);
566	else	702	else
567	{	703	{
568	#if EV_AVOID_STDIO	704	#if EV_AVOID_STDIO
569	const char *err = strerror (errno);
570
571	ev_printerr (msg);	705	ev_printerr (msg);
572	ev_printerr (": ");	706	ev_printerr (": ");
573	ev_printerr (err);	707	ev_printerr (strerror (errno));
574	ev_printerr ("\n");	708	ev_printerr ("\n");
575	#else	709	#else
576	perror (msg);	710	perror (msg);
577	#endif	711	#endif
578	abort ();	712	abort ();
…		…
598	#endif	732	#endif
599	}	733	}
600		734
601	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;	735	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
602		736
603	void	737	void ecb_cold
604	ev_set_allocator (void *(*cb)(void *ptr, long size))	738	ev_set_allocator (void *(*cb)(void *ptr, long size))
605	{	739	{
606	alloc = cb;	740	alloc = cb;
607	}	741	}
608		742
…		…
612	ptr = alloc (ptr, size);	746	ptr = alloc (ptr, size);
613		747
614	if (!ptr && size)	748	if (!ptr && size)
615	{	749	{
616	#if EV_AVOID_STDIO	750	#if EV_AVOID_STDIO
617	ev_printerr ("libev: memory allocation failed, aborting.\n");	751	ev_printerr ("(libev) memory allocation failed, aborting.\n");
618	#else	752	#else
619	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	753	fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
620	#endif	754	#endif
621	abort ();	755	abort ();
622	}	756	}
623		757
624	return ptr;	758	return ptr;
…		…
641	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */	775	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
642	unsigned char unused;	776	unsigned char unused;
643	#if EV_USE_EPOLL	777	#if EV_USE_EPOLL
644	unsigned int egen; /* generation counter to counter epoll bugs */	778	unsigned int egen; /* generation counter to counter epoll bugs */
645	#endif	779	#endif
646	#if EV_SELECT_IS_WINSOCKET	780	#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
647	SOCKET handle;	781	SOCKET handle;
		782	#endif
		783	#if EV_USE_IOCP
		784	OVERLAPPED or, ow;
648	#endif	785	#endif
649	} ANFD;	786	} ANFD;
650		787
651	/* stores the pending event set for a given watcher */	788	/* stores the pending event set for a given watcher */
652	typedef struct	789	typedef struct
…		…
717	# define EV_RELEASE_CB (void)0	854	# define EV_RELEASE_CB (void)0
718	# define EV_ACQUIRE_CB (void)0	855	# define EV_ACQUIRE_CB (void)0
719	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)	856	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
720	#endif	857	#endif
721		858
722	#define EVUNLOOP_RECURSE 0x80	859	#define EVBREAK_RECURSE 0x80
723		860
724	/*****************************************************************************/	861	/*****************************************************************************/
725		862
726	#ifndef EV_HAVE_EV_TIME	863	#ifndef EV_HAVE_EV_TIME
727	ev_tstamp	864	ev_tstamp
…		…
814	}	951	}
815		952
816	return ncur;	953	return ncur;
817	}	954	}
818		955
819	static noinline void *	956	static void * noinline ecb_cold
820	array_realloc (int elem, void *base, int *cur, int cnt)	957	array_realloc (int elem, void *base, int *cur, int cnt)
821	{	958	{
822	*cur = array_nextsize (elem, *cur, cnt);	959	*cur = array_nextsize (elem, *cur, cnt);
823	return ev_realloc (base, elem * *cur);	960	return ev_realloc (base, elem * *cur);
824	}	961	}
…		…
937	inline_size void	1074	inline_size void
938	fd_reify (EV_P)	1075	fd_reify (EV_P)
939	{	1076	{
940	int i;	1077	int i;
941		1078
		1079	#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
		1080	for (i = 0; i < fdchangecnt; ++i)
		1081	{
		1082	int fd = fdchanges [i];
		1083	ANFD *anfd = anfds + fd;
		1084
		1085	if (anfd->reify & EV__IOFDSET && anfd->head)
		1086	{
		1087	SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
		1088
		1089	if (handle != anfd->handle)
		1090	{
		1091	unsigned long arg;
		1092
		1093	assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
		1094
		1095	/* handle changed, but fd didn't - we need to do it in two steps */
		1096	backend_modify (EV_A_ fd, anfd->events, 0);
		1097	anfd->events = 0;
		1098	anfd->handle = handle;
		1099	}
		1100	}
		1101	}
		1102	#endif
		1103
942	for (i = 0; i < fdchangecnt; ++i)	1104	for (i = 0; i < fdchangecnt; ++i)
943	{	1105	{
944	int fd = fdchanges [i];	1106	int fd = fdchanges [i];
945	ANFD *anfd = anfds + fd;	1107	ANFD *anfd = anfds + fd;
946	ev_io *w;	1108	ev_io *w;
947		1109
948	unsigned char events = 0;	1110	unsigned char o_events = anfd->events;
		1111	unsigned char o_reify = anfd->reify;
949		1112
950	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	1113	anfd->reify = 0;
951	events |= (unsigned char)w->events;
952		1114
953	#if EV_SELECT_IS_WINSOCKET	1115	/*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
954	if (events)
955	{	1116	{
956	unsigned long arg;	1117	anfd->events = 0;
957	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	1118
958	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	1119	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
		1120	anfd->events |= (unsigned char)w->events;
		1121
		1122	if (o_events != anfd->events)
		1123	o_reify = EV__IOFDSET; /* actually |= */
959	}	1124	}
960	#endif
961		1125
962	{	1126	if (o_reify & EV__IOFDSET)
963	unsigned char o_events = anfd->events;
964	unsigned char o_reify = anfd->reify;
965
966	anfd->reify = 0;
967	anfd->events = events;
968
969	if (o_events != events || o_reify & EV__IOFDSET)
970	backend_modify (EV_A_ fd, o_events, events);	1127	backend_modify (EV_A_ fd, o_events, anfd->events);
971	}
972	}	1128	}
973		1129
974	fdchangecnt = 0;	1130	fdchangecnt = 0;
975	}	1131	}
976		1132
…		…
988	fdchanges [fdchangecnt - 1] = fd;	1144	fdchanges [fdchangecnt - 1] = fd;
989	}	1145	}
990	}	1146	}
991		1147
992	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */	1148	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
993	inline_speed void	1149	inline_speed void ecb_cold
994	fd_kill (EV_P_ int fd)	1150	fd_kill (EV_P_ int fd)
995	{	1151	{
996	ev_io *w;	1152	ev_io *w;
997		1153
998	while ((w = (ev_io *)anfds [fd].head))	1154	while ((w = (ev_io *)anfds [fd].head))
…		…
1001	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	1157	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1002	}	1158	}
1003	}	1159	}
1004		1160
1005	/* check whether the given fd is actually valid, for error recovery */	1161	/* check whether the given fd is actually valid, for error recovery */
1006	inline_size int	1162	inline_size int ecb_cold
1007	fd_valid (int fd)	1163	fd_valid (int fd)
1008	{	1164	{
1009	#ifdef _WIN32	1165	#ifdef _WIN32
1010	return EV_FD_TO_WIN32_HANDLE (fd) != -1;	1166	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1011	#else	1167	#else
1012	return fcntl (fd, F_GETFD) != -1;	1168	return fcntl (fd, F_GETFD) != -1;
1013	#endif	1169	#endif
1014	}	1170	}
1015		1171
1016	/* called on EBADF to verify fds */	1172	/* called on EBADF to verify fds */
1017	static void noinline	1173	static void noinline ecb_cold
1018	fd_ebadf (EV_P)	1174	fd_ebadf (EV_P)
1019	{	1175	{
1020	int fd;	1176	int fd;
1021		1177
1022	for (fd = 0; fd < anfdmax; ++fd)	1178	for (fd = 0; fd < anfdmax; ++fd)
…		…
1024	if (!fd_valid (fd) && errno == EBADF)	1180	if (!fd_valid (fd) && errno == EBADF)
1025	fd_kill (EV_A_ fd);	1181	fd_kill (EV_A_ fd);
1026	}	1182	}
1027		1183
1028	/* called on ENOMEM in select/poll to kill some fds and retry */	1184	/* called on ENOMEM in select/poll to kill some fds and retry */
1029	static void noinline	1185	static void noinline ecb_cold
1030	fd_enomem (EV_P)	1186	fd_enomem (EV_P)
1031	{	1187	{
1032	int fd;	1188	int fd;
1033		1189
1034	for (fd = anfdmax; fd--; )	1190	for (fd = anfdmax; fd--; )
…		…
1229		1385
1230	/*****************************************************************************/	1386	/*****************************************************************************/
1231		1387
1232	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE	1388	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1233		1389
1234	static void noinline	1390	static void noinline ecb_cold
1235	evpipe_init (EV_P)	1391	evpipe_init (EV_P)
1236	{	1392	{
1237	if (!ev_is_active (&pipe_w))	1393	if (!ev_is_active (&pipe_w))
1238	{	1394	{
1239	# if EV_USE_EVENTFD	1395	# if EV_USE_EVENTFD
…		…
1261	ev_io_start (EV_A_ &pipe_w);	1417	ev_io_start (EV_A_ &pipe_w);
1262	ev_unref (EV_A); /* watcher should not keep loop alive */	1418	ev_unref (EV_A); /* watcher should not keep loop alive */
1263	}	1419	}
1264	}	1420	}
1265		1421
1266	inline_size void	1422	inline_speed void
1267	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1423	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1268	{	1424	{
1269	if (!*flag)	1425	if (!*flag)
1270	{	1426	{
1271	int old_errno = errno; /* save errno because write might clobber it */
1272	char dummy;
1273
1274	*flag = 1;	1427	*flag = 1;
1275		1428
		1429	pipe_write_skipped = 1;
		1430
		1431	if (pipe_write_wanted)
		1432	{
		1433	int old_errno;
		1434
		1435	pipe_write_skipped = 0;
		1436
		1437	old_errno = errno; /* save errno because write will clobber it */
		1438
1276	#if EV_USE_EVENTFD	1439	#if EV_USE_EVENTFD
1277	if (evfd >= 0)	1440	if (evfd >= 0)
1278	{	1441	{
1279	uint64_t counter = 1;	1442	uint64_t counter = 1;
1280	write (evfd, &counter, sizeof (uint64_t));	1443	write (evfd, &counter, sizeof (uint64_t));
		1444	}
		1445	else
		1446	#endif
		1447	{
		1448	/* win32 people keep sending patches that change this write() to send() */
		1449	/* and then run away. but send() is wrong, it wants a socket handle on win32 */
		1450	/* so when you think this write should be a send instead, please find out */
		1451	/* where your send() is from - it's definitely not the microsoft send, and */
		1452	/* tell me. thank you. */
		1453	write (evpipe [1], &(evpipe [1]), 1);
		1454	}
		1455
		1456	errno = old_errno;
1281	}	1457	}
1282	else
1283	#endif
1284	/* win32 people keep sending patches that change this write() to send() */
1285	/* and then run away. but send() is wrong, it wants a socket handle on win32 */
1286	/* so when you think this write should be a send instead, please find out */
1287	/* where your send() is from - it's definitely not the microsoft send, and */
1288	/* tell me. thank you. */
1289	write (evpipe [1], &dummy, 1);
1290
1291	errno = old_errno;
1292	}	1458	}
1293	}	1459	}
1294		1460
1295	/* called whenever the libev signal pipe */	1461	/* called whenever the libev signal pipe */
1296	/* got some events (signal, async) */	1462	/* got some events (signal, async) */
1297	static void	1463	static void
1298	pipecb (EV_P_ ev_io *iow, int revents)	1464	pipecb (EV_P_ ev_io *iow, int revents)
1299	{	1465	{
1300	int i;	1466	int i;
1301		1467
		1468	if (revents & EV_READ)
		1469	{
1302	#if EV_USE_EVENTFD	1470	#if EV_USE_EVENTFD
1303	if (evfd >= 0)	1471	if (evfd >= 0)
1304	{	1472	{
1305	uint64_t counter;	1473	uint64_t counter;
1306	read (evfd, &counter, sizeof (uint64_t));	1474	read (evfd, &counter, sizeof (uint64_t));
1307	}	1475	}
1308	else	1476	else
1309	#endif	1477	#endif
1310	{	1478	{
1311	char dummy;	1479	char dummy;
1312	/* see discussion in evpipe_write when you think this read should be recv in win32 */	1480	/* see discussion in evpipe_write when you think this read should be recv in win32 */
1313	read (evpipe [0], &dummy, 1);	1481	read (evpipe [0], &dummy, 1);
		1482	}
1314	}	1483	}
1315		1484
		1485	pipe_write_skipped = 0;
		1486
		1487	#if EV_SIGNAL_ENABLE
1316	if (sig_pending)	1488	if (sig_pending)
1317	{	1489	{
1318	sig_pending = 0;	1490	sig_pending = 0;
1319		1491
1320	for (i = EV_NSIG - 1; i--; )	1492	for (i = EV_NSIG - 1; i--; )
1321	if (expect_false (signals [i].pending))	1493	if (expect_false (signals [i].pending))
1322	ev_feed_signal_event (EV_A_ i + 1);	1494	ev_feed_signal_event (EV_A_ i + 1);
1323	}	1495	}
		1496	#endif
1324		1497
1325	#if EV_ASYNC_ENABLE	1498	#if EV_ASYNC_ENABLE
1326	if (async_pending)	1499	if (async_pending)
1327	{	1500	{
1328	async_pending = 0;	1501	async_pending = 0;
…		…
1337	#endif	1510	#endif
1338	}	1511	}
1339		1512
1340	/*****************************************************************************/	1513	/*****************************************************************************/
1341		1514
		1515	void
		1516	ev_feed_signal (int signum)
		1517	{
		1518	#if EV_MULTIPLICITY
		1519	EV_P = signals [signum - 1].loop;
		1520
		1521	if (!EV_A)
		1522	return;
		1523	#endif
		1524
		1525	evpipe_init (EV_A);
		1526
		1527	signals [signum - 1].pending = 1;
		1528	evpipe_write (EV_A_ &sig_pending);
		1529	}
		1530
1342	static void	1531	static void
1343	ev_sighandler (int signum)	1532	ev_sighandler (int signum)
1344	{	1533	{
1345	#if EV_MULTIPLICITY
1346	EV_P = signals [signum - 1].loop;
1347	#endif
1348
1349	#ifdef _WIN32	1534	#ifdef _WIN32
1350	signal (signum, ev_sighandler);	1535	signal (signum, ev_sighandler);
1351	#endif	1536	#endif
1352		1537
1353	signals [signum - 1].pending = 1;	1538	ev_feed_signal (signum);
1354	evpipe_write (EV_A_ &sig_pending);
1355	}	1539	}
1356		1540
1357	void noinline	1541	void noinline
1358	ev_feed_signal_event (EV_P_ int signum)	1542	ev_feed_signal_event (EV_P_ int signum)
1359	{	1543	{
…		…
1459		1643
1460	#endif	1644	#endif
1461		1645
1462	/*****************************************************************************/	1646	/*****************************************************************************/
1463		1647
		1648	#if EV_USE_IOCP
		1649	# include "ev_iocp.c"
		1650	#endif
1464	#if EV_USE_PORT	1651	#if EV_USE_PORT
1465	# include "ev_port.c"	1652	# include "ev_port.c"
1466	#endif	1653	#endif
1467	#if EV_USE_KQUEUE	1654	#if EV_USE_KQUEUE
1468	# include "ev_kqueue.c"	1655	# include "ev_kqueue.c"
…		…
1475	#endif	1662	#endif
1476	#if EV_USE_SELECT	1663	#if EV_USE_SELECT
1477	# include "ev_select.c"	1664	# include "ev_select.c"
1478	#endif	1665	#endif
1479		1666
1480	int	1667	int ecb_cold
1481	ev_version_major (void)	1668	ev_version_major (void)
1482	{	1669	{
1483	return EV_VERSION_MAJOR;	1670	return EV_VERSION_MAJOR;
1484	}	1671	}
1485		1672
1486	int	1673	int ecb_cold
1487	ev_version_minor (void)	1674	ev_version_minor (void)
1488	{	1675	{
1489	return EV_VERSION_MINOR;	1676	return EV_VERSION_MINOR;
1490	}	1677	}
1491		1678
1492	/* return true if we are running with elevated privileges and should ignore env variables */	1679	/* return true if we are running with elevated privileges and should ignore env variables */
1493	int inline_size	1680	int inline_size ecb_cold
1494	enable_secure (void)	1681	enable_secure (void)
1495	{	1682	{
1496	#ifdef _WIN32	1683	#ifdef _WIN32
1497	return 0;	1684	return 0;
1498	#else	1685	#else
1499	return getuid () != geteuid ()	1686	return getuid () != geteuid ()
1500	|| getgid () != getegid ();	1687	|| getgid () != getegid ();
1501	#endif	1688	#endif
1502	}	1689	}
1503		1690
1504	unsigned int	1691	unsigned int ecb_cold
1505	ev_supported_backends (void)	1692	ev_supported_backends (void)
1506	{	1693	{
1507	unsigned int flags = 0;	1694	unsigned int flags = 0;
1508		1695
1509	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;	1696	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
…		…
1513	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;	1700	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1514		1701
1515	return flags;	1702	return flags;
1516	}	1703	}
1517		1704
1518	unsigned int	1705	unsigned int ecb_cold
1519	ev_recommended_backends (void)	1706	ev_recommended_backends (void)
1520	{	1707	{
1521	unsigned int flags = ev_supported_backends ();	1708	unsigned int flags = ev_supported_backends ();
1522		1709
1523	#ifndef __NetBSD__	1710	#ifndef __NetBSD__
…		…
1535	#endif	1722	#endif
1536		1723
1537	return flags;	1724	return flags;
1538	}	1725	}
1539		1726
1540	unsigned int	1727	unsigned int ecb_cold
1541	ev_embeddable_backends (void)	1728	ev_embeddable_backends (void)
1542	{	1729	{
1543	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;	1730	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1544		1731
1545	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */	1732	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1546	/* please fix it and tell me how to detect the fix */	1733	if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1547	flags &= ~EVBACKEND_EPOLL;	1734	flags &= ~EVBACKEND_EPOLL;
1548		1735
1549	return flags;	1736	return flags;
1550	}	1737	}
1551		1738
1552	unsigned int	1739	unsigned int
…		…
1590	ev_userdata (EV_P)	1777	ev_userdata (EV_P)
1591	{	1778	{
1592	return userdata;	1779	return userdata;
1593	}	1780	}
1594		1781
		1782	void
1595	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))	1783	ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1596	{	1784	{
1597	invoke_cb = invoke_pending_cb;	1785	invoke_cb = invoke_pending_cb;
1598	}	1786	}
1599		1787
		1788	void
1600	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))	1789	ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1601	{	1790	{
1602	release_cb = release;	1791	release_cb = release;
1603	acquire_cb = acquire;	1792	acquire_cb = acquire;
1604	}	1793	}
1605	#endif	1794	#endif
1606		1795
1607	/* initialise a loop structure, must be zero-initialised */	1796	/* initialise a loop structure, must be zero-initialised */
1608	static void noinline	1797	static void noinline ecb_cold
1609	loop_init (EV_P_ unsigned int flags)	1798	loop_init (EV_P_ unsigned int flags)
1610	{	1799	{
1611	if (!backend)	1800	if (!backend)
1612	{	1801	{
		1802	origflags = flags;
		1803
1613	#if EV_USE_REALTIME	1804	#if EV_USE_REALTIME
1614	if (!have_realtime)	1805	if (!have_realtime)
1615	{	1806	{
1616	struct timespec ts;	1807	struct timespec ts;
1617		1808
…		…
1639	if (!(flags & EVFLAG_NOENV)	1830	if (!(flags & EVFLAG_NOENV)
1640	&& !enable_secure ()	1831	&& !enable_secure ()
1641	&& getenv ("LIBEV_FLAGS"))	1832	&& getenv ("LIBEV_FLAGS"))
1642	flags = atoi (getenv ("LIBEV_FLAGS"));	1833	flags = atoi (getenv ("LIBEV_FLAGS"));
1643		1834
1644	ev_rt_now = ev_time ();	1835	ev_rt_now = ev_time ();
1645	mn_now = get_clock ();	1836	mn_now = get_clock ();
1646	now_floor = mn_now;	1837	now_floor = mn_now;
1647	rtmn_diff = ev_rt_now - mn_now;	1838	rtmn_diff = ev_rt_now - mn_now;
1648	#if EV_FEATURE_API	1839	#if EV_FEATURE_API
1649	invoke_cb = ev_invoke_pending;	1840	invoke_cb = ev_invoke_pending;
1650	#endif	1841	#endif
1651		1842
1652	io_blocktime = 0.;	1843	io_blocktime = 0.;
1653	timeout_blocktime = 0.;	1844	timeout_blocktime = 0.;
1654	backend = 0;	1845	backend = 0;
1655	backend_fd = -1;	1846	backend_fd = -1;
1656	sig_pending = 0;	1847	sig_pending = 0;
1657	#if EV_ASYNC_ENABLE	1848	#if EV_ASYNC_ENABLE
1658	async_pending = 0;	1849	async_pending = 0;
1659	#endif	1850	#endif
		1851	pipe_write_skipped = 0;
		1852	pipe_write_wanted = 0;
1660	#if EV_USE_INOTIFY	1853	#if EV_USE_INOTIFY
1661	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;	1854	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1662	#endif	1855	#endif
1663	#if EV_USE_SIGNALFD	1856	#if EV_USE_SIGNALFD
1664	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;	1857	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1665	#endif	1858	#endif
1666		1859
1667	if (!(flags & 0x0000ffffU))	1860	if (!(flags & EVBACKEND_MASK))
1668	flags |= ev_recommended_backends ();	1861	flags |= ev_recommended_backends ();
1669		1862
		1863	#if EV_USE_IOCP
		1864	if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
		1865	#endif
1670	#if EV_USE_PORT	1866	#if EV_USE_PORT
1671	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1867	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1672	#endif	1868	#endif
1673	#if EV_USE_KQUEUE	1869	#if EV_USE_KQUEUE
1674	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1870	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
1691	#endif	1887	#endif
1692	}	1888	}
1693	}	1889	}
1694		1890
1695	/* free up a loop structure */	1891	/* free up a loop structure */
1696	static void noinline	1892	void ecb_cold
1697	loop_destroy (EV_P)	1893	ev_loop_destroy (EV_P)
1698	{	1894	{
1699	int i;	1895	int i;
		1896
		1897	#if EV_MULTIPLICITY
		1898	/* mimic free (0) */
		1899	if (!EV_A)
		1900	return;
		1901	#endif
		1902
		1903	#if EV_CLEANUP_ENABLE
		1904	/* queue cleanup watchers (and execute them) */
		1905	if (expect_false (cleanupcnt))
		1906	{
		1907	queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
		1908	EV_INVOKE_PENDING;
		1909	}
		1910	#endif
		1911
		1912	#if EV_CHILD_ENABLE
		1913	if (ev_is_active (&childev))
		1914	{
		1915	ev_ref (EV_A); /* child watcher */
		1916	ev_signal_stop (EV_A_ &childev);
		1917	}
		1918	#endif
1700		1919
1701	if (ev_is_active (&pipe_w))	1920	if (ev_is_active (&pipe_w))
1702	{	1921	{
1703	/*ev_ref (EV_A);*/	1922	/*ev_ref (EV_A);*/
1704	/*ev_io_stop (EV_A_ &pipe_w);*/	1923	/*ev_io_stop (EV_A_ &pipe_w);*/
…		…
1726	#endif	1945	#endif
1727		1946
1728	if (backend_fd >= 0)	1947	if (backend_fd >= 0)
1729	close (backend_fd);	1948	close (backend_fd);
1730		1949
		1950	#if EV_USE_IOCP
		1951	if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
		1952	#endif
1731	#if EV_USE_PORT	1953	#if EV_USE_PORT
1732	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1954	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1733	#endif	1955	#endif
1734	#if EV_USE_KQUEUE	1956	#if EV_USE_KQUEUE
1735	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);	1957	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
…		…
1762	array_free (periodic, EMPTY);	1984	array_free (periodic, EMPTY);
1763	#endif	1985	#endif
1764	#if EV_FORK_ENABLE	1986	#if EV_FORK_ENABLE
1765	array_free (fork, EMPTY);	1987	array_free (fork, EMPTY);
1766	#endif	1988	#endif
		1989	#if EV_CLEANUP_ENABLE
		1990	array_free (cleanup, EMPTY);
		1991	#endif
1767	array_free (prepare, EMPTY);	1992	array_free (prepare, EMPTY);
1768	array_free (check, EMPTY);	1993	array_free (check, EMPTY);
1769	#if EV_ASYNC_ENABLE	1994	#if EV_ASYNC_ENABLE
1770	array_free (async, EMPTY);	1995	array_free (async, EMPTY);
1771	#endif	1996	#endif
1772		1997
1773	backend = 0;	1998	backend = 0;
		1999
		2000	#if EV_MULTIPLICITY
		2001	if (ev_is_default_loop (EV_A))
		2002	#endif
		2003	ev_default_loop_ptr = 0;
		2004	#if EV_MULTIPLICITY
		2005	else
		2006	ev_free (EV_A);
		2007	#endif
1774	}	2008	}
1775		2009
1776	#if EV_USE_INOTIFY	2010	#if EV_USE_INOTIFY
1777	inline_size void infy_fork (EV_P);	2011	inline_size void infy_fork (EV_P);
1778	#endif	2012	#endif
…		…
1793	infy_fork (EV_A);	2027	infy_fork (EV_A);
1794	#endif	2028	#endif
1795		2029
1796	if (ev_is_active (&pipe_w))	2030	if (ev_is_active (&pipe_w))
1797	{	2031	{
1798	/* this "locks" the handlers against writing to the pipe */	2032	/* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1799	/* while we modify the fd vars */
1800	sig_pending = 1;
1801	#if EV_ASYNC_ENABLE
1802	async_pending = 1;
1803	#endif
1804		2033
1805	ev_ref (EV_A);	2034	ev_ref (EV_A);
1806	ev_io_stop (EV_A_ &pipe_w);	2035	ev_io_stop (EV_A_ &pipe_w);
1807		2036
1808	#if EV_USE_EVENTFD	2037	#if EV_USE_EVENTFD
…		…
1826	postfork = 0;	2055	postfork = 0;
1827	}	2056	}
1828		2057
1829	#if EV_MULTIPLICITY	2058	#if EV_MULTIPLICITY
1830		2059
1831	struct ev_loop *	2060	struct ev_loop * ecb_cold
1832	ev_loop_new (unsigned int flags)	2061	ev_loop_new (unsigned int flags)
1833	{	2062	{
1834	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	2063	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1835		2064
1836	memset (EV_A, 0, sizeof (struct ev_loop));	2065	memset (EV_A, 0, sizeof (struct ev_loop));
1837	loop_init (EV_A_ flags);	2066	loop_init (EV_A_ flags);
1838		2067
1839	if (ev_backend (EV_A))	2068	if (ev_backend (EV_A))
1840	return EV_A;	2069	return EV_A;
1841		2070
		2071	ev_free (EV_A);
1842	return 0;	2072	return 0;
1843	}	2073	}
1844		2074
1845	void
1846	ev_loop_destroy (EV_P)
1847	{
1848	loop_destroy (EV_A);
1849	ev_free (loop);
1850	}
1851
1852	void
1853	ev_loop_fork (EV_P)
1854	{
1855	postfork = 1; /* must be in line with ev_default_fork */
1856	}
1857	#endif /* multiplicity */	2075	#endif /* multiplicity */
1858		2076
1859	#if EV_VERIFY	2077	#if EV_VERIFY
1860	static void noinline	2078	static void noinline ecb_cold
1861	verify_watcher (EV_P_ W w)	2079	verify_watcher (EV_P_ W w)
1862	{	2080	{
1863	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	2081	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1864		2082
1865	if (w->pending)	2083	if (w->pending)
1866	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	2084	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1867	}	2085	}
1868		2086
1869	static void noinline	2087	static void noinline ecb_cold
1870	verify_heap (EV_P_ ANHE *heap, int N)	2088	verify_heap (EV_P_ ANHE *heap, int N)
1871	{	2089	{
1872	int i;	2090	int i;
1873		2091
1874	for (i = HEAP0; i < N + HEAP0; ++i)	2092	for (i = HEAP0; i < N + HEAP0; ++i)
…		…
1879		2097
1880	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	2098	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1881	}	2099	}
1882	}	2100	}
1883		2101
1884	static void noinline	2102	static void noinline ecb_cold
1885	array_verify (EV_P_ W *ws, int cnt)	2103	array_verify (EV_P_ W *ws, int cnt)
1886	{	2104	{
1887	while (cnt--)	2105	while (cnt--)
1888	{	2106	{
1889	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));	2107	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
…		…
1891	}	2109	}
1892	}	2110	}
1893	#endif	2111	#endif
1894		2112
1895	#if EV_FEATURE_API	2113	#if EV_FEATURE_API
1896	void	2114	void ecb_cold
1897	ev_verify (EV_P)	2115	ev_verify (EV_P)
1898	{	2116	{
1899	#if EV_VERIFY	2117	#if EV_VERIFY
1900	int i;	2118	int i;
1901	WL w;	2119	WL w;
…		…
1936	#if EV_FORK_ENABLE	2154	#if EV_FORK_ENABLE
1937	assert (forkmax >= forkcnt);	2155	assert (forkmax >= forkcnt);
1938	array_verify (EV_A_ (W *)forks, forkcnt);	2156	array_verify (EV_A_ (W *)forks, forkcnt);
1939	#endif	2157	#endif
1940		2158
		2159	#if EV_CLEANUP_ENABLE
		2160	assert (cleanupmax >= cleanupcnt);
		2161	array_verify (EV_A_ (W *)cleanups, cleanupcnt);
		2162	#endif
		2163
1941	#if EV_ASYNC_ENABLE	2164	#if EV_ASYNC_ENABLE
1942	assert (asyncmax >= asynccnt);	2165	assert (asyncmax >= asynccnt);
1943	array_verify (EV_A_ (W *)asyncs, asynccnt);	2166	array_verify (EV_A_ (W *)asyncs, asynccnt);
1944	#endif	2167	#endif
1945		2168
…		…
1962	#endif	2185	#endif
1963	}	2186	}
1964	#endif	2187	#endif
1965		2188
1966	#if EV_MULTIPLICITY	2189	#if EV_MULTIPLICITY
1967	struct ev_loop *	2190	struct ev_loop * ecb_cold
1968	ev_default_loop_init (unsigned int flags)
1969	#else	2191	#else
1970	int	2192	int
		2193	#endif
1971	ev_default_loop (unsigned int flags)	2194	ev_default_loop (unsigned int flags)
1972	#endif
1973	{	2195	{
1974	if (!ev_default_loop_ptr)	2196	if (!ev_default_loop_ptr)
1975	{	2197	{
1976	#if EV_MULTIPLICITY	2198	#if EV_MULTIPLICITY
1977	EV_P = ev_default_loop_ptr = &default_loop_struct;	2199	EV_P = ev_default_loop_ptr = &default_loop_struct;
…		…
1996		2218
1997	return ev_default_loop_ptr;	2219	return ev_default_loop_ptr;
1998	}	2220	}
1999		2221
2000	void	2222	void
2001	ev_default_destroy (void)	2223	ev_loop_fork (EV_P)
2002	{	2224	{
2003	#if EV_MULTIPLICITY
2004	EV_P = ev_default_loop_ptr;
2005	#endif
2006
2007	ev_default_loop_ptr = 0;
2008
2009	#if EV_CHILD_ENABLE
2010	ev_ref (EV_A); /* child watcher */
2011	ev_signal_stop (EV_A_ &childev);
2012	#endif
2013
2014	loop_destroy (EV_A);
2015	}
2016
2017	void
2018	ev_default_fork (void)
2019	{
2020	#if EV_MULTIPLICITY
2021	EV_P = ev_default_loop_ptr;
2022	#endif
2023
2024	postfork = 1; /* must be in line with ev_loop_fork */	2225	postfork = 1; /* must be in line with ev_default_fork */
2025	}	2226	}
2026		2227
2027	/*****************************************************************************/	2228	/*****************************************************************************/
2028		2229
2029	void	2230	void
…		…
2051		2252
2052	for (pri = NUMPRI; pri--; )	2253	for (pri = NUMPRI; pri--; )
2053	while (pendingcnt [pri])	2254	while (pendingcnt [pri])
2054	{	2255	{
2055	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	2256	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
2056
2057	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2058	/* ^ this is no longer true, as pending_w could be here */
2059		2257
2060	p->w->pending = 0;	2258	p->w->pending = 0;
2061	EV_CB_INVOKE (p->w, p->events);	2259	EV_CB_INVOKE (p->w, p->events);
2062	EV_FREQUENT_CHECK;	2260	EV_FREQUENT_CHECK;
2063	}	2261	}
…		…
2125	feed_reverse_done (EV_A_ EV_TIMER);	2323	feed_reverse_done (EV_A_ EV_TIMER);
2126	}	2324	}
2127	}	2325	}
2128		2326
2129	#if EV_PERIODIC_ENABLE	2327	#if EV_PERIODIC_ENABLE
		2328
		2329	static void noinline
		2330	periodic_recalc (EV_P_ ev_periodic *w)
		2331	{
		2332	ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
		2333	ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
		2334
		2335	/* the above almost always errs on the low side */
		2336	while (at <= ev_rt_now)
		2337	{
		2338	ev_tstamp nat = at + w->interval;
		2339
		2340	/* when resolution fails us, we use ev_rt_now */
		2341	if (expect_false (nat == at))
		2342	{
		2343	at = ev_rt_now;
		2344	break;
		2345	}
		2346
		2347	at = nat;
		2348	}
		2349
		2350	ev_at (w) = at;
		2351	}
		2352
2130	/* make periodics pending */	2353	/* make periodics pending */
2131	inline_size void	2354	inline_size void
2132	periodics_reify (EV_P)	2355	periodics_reify (EV_P)
2133	{	2356	{
2134	EV_FREQUENT_CHECK;	2357	EV_FREQUENT_CHECK;
…		…
2153	ANHE_at_cache (periodics [HEAP0]);	2376	ANHE_at_cache (periodics [HEAP0]);
2154	downheap (periodics, periodiccnt, HEAP0);	2377	downheap (periodics, periodiccnt, HEAP0);
2155	}	2378	}
2156	else if (w->interval)	2379	else if (w->interval)
2157	{	2380	{
2158	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2381	periodic_recalc (EV_A_ w);
2159	/* if next trigger time is not sufficiently in the future, put it there */
2160	/* this might happen because of floating point inexactness */
2161	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2162	{
2163	ev_at (w) += w->interval;
2164
2165	/* if interval is unreasonably low we might still have a time in the past */
2166	/* so correct this. this will make the periodic very inexact, but the user */
2167	/* has effectively asked to get triggered more often than possible */
2168	if (ev_at (w) < ev_rt_now)
2169	ev_at (w) = ev_rt_now;
2170	}
2171
2172	ANHE_at_cache (periodics [HEAP0]);	2382	ANHE_at_cache (periodics [HEAP0]);
2173	downheap (periodics, periodiccnt, HEAP0);	2383	downheap (periodics, periodiccnt, HEAP0);
2174	}	2384	}
2175	else	2385	else
2176	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	2386	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
…		…
2184	}	2394	}
2185	}	2395	}
2186		2396
2187	/* simply recalculate all periodics */	2397	/* simply recalculate all periodics */
2188	/* TODO: maybe ensure that at least one event happens when jumping forward? */	2398	/* TODO: maybe ensure that at least one event happens when jumping forward? */
2189	static void noinline	2399	static void noinline ecb_cold
2190	periodics_reschedule (EV_P)	2400	periodics_reschedule (EV_P)
2191	{	2401	{
2192	int i;	2402	int i;
2193		2403
2194	/* adjust periodics after time jump */	2404	/* adjust periodics after time jump */
…		…
2197	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);	2407	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2198		2408
2199	if (w->reschedule_cb)	2409	if (w->reschedule_cb)
2200	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2410	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2201	else if (w->interval)	2411	else if (w->interval)
2202	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2412	periodic_recalc (EV_A_ w);
2203		2413
2204	ANHE_at_cache (periodics [i]);	2414	ANHE_at_cache (periodics [i]);
2205	}	2415	}
2206		2416
2207	reheap (periodics, periodiccnt);	2417	reheap (periodics, periodiccnt);
2208	}	2418	}
2209	#endif	2419	#endif
2210		2420
2211	/* adjust all timers by a given offset */	2421	/* adjust all timers by a given offset */
2212	static void noinline	2422	static void noinline ecb_cold
2213	timers_reschedule (EV_P_ ev_tstamp adjust)	2423	timers_reschedule (EV_P_ ev_tstamp adjust)
2214	{	2424	{
2215	int i;	2425	int i;
2216		2426
2217	for (i = 0; i < timercnt; ++i)	2427	for (i = 0; i < timercnt; ++i)
…		…
2254	* doesn't hurt either as we only do this on time-jumps or	2464	* doesn't hurt either as we only do this on time-jumps or
2255	* in the unlikely event of having been preempted here.	2465	* in the unlikely event of having been preempted here.
2256	*/	2466	*/
2257	for (i = 4; --i; )	2467	for (i = 4; --i; )
2258	{	2468	{
		2469	ev_tstamp diff;
2259	rtmn_diff = ev_rt_now - mn_now;	2470	rtmn_diff = ev_rt_now - mn_now;
2260		2471
		2472	diff = odiff - rtmn_diff;
		2473
2261	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))	2474	if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2262	return; /* all is well */	2475	return; /* all is well */
2263		2476
2264	ev_rt_now = ev_time ();	2477	ev_rt_now = ev_time ();
2265	mn_now = get_clock ();	2478	mn_now = get_clock ();
2266	now_floor = mn_now;	2479	now_floor = mn_now;
…		…
2289	mn_now = ev_rt_now;	2502	mn_now = ev_rt_now;
2290	}	2503	}
2291	}	2504	}
2292		2505
2293	void	2506	void
2294	ev_loop (EV_P_ int flags)	2507	ev_run (EV_P_ int flags)
2295	{	2508	{
2296	#if EV_FEATURE_API	2509	#if EV_FEATURE_API
2297	++loop_depth;	2510	++loop_depth;
2298	#endif	2511	#endif
2299		2512
2300	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));	2513	assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2301		2514
2302	loop_done = EVUNLOOP_CANCEL;	2515	loop_done = EVBREAK_CANCEL;
2303		2516
2304	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */	2517	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2305		2518
2306	do	2519	do
2307	{	2520	{
…		…
2350	/* calculate blocking time */	2563	/* calculate blocking time */
2351	{	2564	{
2352	ev_tstamp waittime = 0.;	2565	ev_tstamp waittime = 0.;
2353	ev_tstamp sleeptime = 0.;	2566	ev_tstamp sleeptime = 0.;
2354		2567
		2568	/* remember old timestamp for io_blocktime calculation */
		2569	ev_tstamp prev_mn_now = mn_now;
		2570
		2571	/* update time to cancel out callback processing overhead */
		2572	time_update (EV_A_ 1e100);
		2573
		2574	/* from now on, we want a pipe-wake-up */
		2575	pipe_write_wanted = 1;
		2576
2355	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2577	if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2356	{	2578	{
2357	/* remember old timestamp for io_blocktime calculation */
2358	ev_tstamp prev_mn_now = mn_now;
2359
2360	/* update time to cancel out callback processing overhead */
2361	time_update (EV_A_ 1e100);
2362
2363	waittime = MAX_BLOCKTIME;	2579	waittime = MAX_BLOCKTIME;
2364		2580
2365	if (timercnt)	2581	if (timercnt)
2366	{	2582	{
2367	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;	2583	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2368	if (waittime > to) waittime = to;	2584	if (waittime > to) waittime = to;
2369	}	2585	}
2370		2586
2371	#if EV_PERIODIC_ENABLE	2587	#if EV_PERIODIC_ENABLE
2372	if (periodiccnt)	2588	if (periodiccnt)
2373	{	2589	{
2374	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2590	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2375	if (waittime > to) waittime = to;	2591	if (waittime > to) waittime = to;
2376	}	2592	}
2377	#endif	2593	#endif
2378		2594
2379	/* don't let timeouts decrease the waittime below timeout_blocktime */	2595	/* don't let timeouts decrease the waittime below timeout_blocktime */
2380	if (expect_false (waittime < timeout_blocktime))	2596	if (expect_false (waittime < timeout_blocktime))
2381	waittime = timeout_blocktime;	2597	waittime = timeout_blocktime;
		2598
		2599	/* at this point, we NEED to wait, so we have to ensure */
		2600	/* to pass a minimum nonzero value to the backend */
		2601	if (expect_false (waittime < backend_mintime))
		2602	waittime = backend_mintime;
2382		2603
2383	/* extra check because io_blocktime is commonly 0 */	2604	/* extra check because io_blocktime is commonly 0 */
2384	if (expect_false (io_blocktime))	2605	if (expect_false (io_blocktime))
2385	{	2606	{
2386	sleeptime = io_blocktime - (mn_now - prev_mn_now);	2607	sleeptime = io_blocktime - (mn_now - prev_mn_now);
2387		2608
2388	if (sleeptime > waittime - backend_fudge)	2609	if (sleeptime > waittime - backend_mintime)
2389	sleeptime = waittime - backend_fudge;	2610	sleeptime = waittime - backend_mintime;
2390		2611
2391	if (expect_true (sleeptime > 0.))	2612	if (expect_true (sleeptime > 0.))
2392	{	2613	{
2393	ev_sleep (sleeptime);	2614	ev_sleep (sleeptime);
2394	waittime -= sleeptime;	2615	waittime -= sleeptime;
…		…
2397	}	2618	}
2398		2619
2399	#if EV_FEATURE_API	2620	#if EV_FEATURE_API
2400	++loop_count;	2621	++loop_count;
2401	#endif	2622	#endif
2402	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */	2623	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2403	backend_poll (EV_A_ waittime);	2624	backend_poll (EV_A_ waittime);
2404	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */	2625	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
		2626
		2627	pipe_write_wanted = 0;
		2628
		2629	if (pipe_write_skipped)
		2630	{
		2631	assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
		2632	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
		2633	}
		2634
2405		2635
2406	/* update ev_rt_now, do magic */	2636	/* update ev_rt_now, do magic */
2407	time_update (EV_A_ waittime + sleeptime);	2637	time_update (EV_A_ waittime + sleeptime);
2408	}	2638	}
2409		2639
…		…
2427	EV_INVOKE_PENDING;	2657	EV_INVOKE_PENDING;
2428	}	2658	}
2429	while (expect_true (	2659	while (expect_true (
2430	activecnt	2660	activecnt
2431	&& !loop_done	2661	&& !loop_done
2432	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2662	&& !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2433	));	2663	));
2434		2664
2435	if (loop_done == EVUNLOOP_ONE)	2665	if (loop_done == EVBREAK_ONE)
2436	loop_done = EVUNLOOP_CANCEL;	2666	loop_done = EVBREAK_CANCEL;
2437		2667
2438	#if EV_FEATURE_API	2668	#if EV_FEATURE_API
2439	--loop_depth;	2669	--loop_depth;
2440	#endif	2670	#endif
2441	}	2671	}
2442		2672
2443	void	2673	void
2444	ev_unloop (EV_P_ int how)	2674	ev_break (EV_P_ int how)
2445	{	2675	{
2446	loop_done = how;	2676	loop_done = how;
2447	}	2677	}
2448		2678
2449	void	2679	void
…		…
2597	EV_FREQUENT_CHECK;	2827	EV_FREQUENT_CHECK;
2598		2828
2599	wlist_del (&anfds[w->fd].head, (WL)w);	2829	wlist_del (&anfds[w->fd].head, (WL)w);
2600	ev_stop (EV_A_ (W)w);	2830	ev_stop (EV_A_ (W)w);
2601		2831
2602	fd_change (EV_A_ w->fd, 1);	2832	fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2603		2833
2604	EV_FREQUENT_CHECK;	2834	EV_FREQUENT_CHECK;
2605	}	2835	}
2606		2836
2607	void noinline	2837	void noinline
…		…
2699	if (w->reschedule_cb)	2929	if (w->reschedule_cb)
2700	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2930	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2701	else if (w->interval)	2931	else if (w->interval)
2702	{	2932	{
2703	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));	2933	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2704	/* this formula differs from the one in periodic_reify because we do not always round up */	2934	periodic_recalc (EV_A_ w);
2705	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2706	}	2935	}
2707	else	2936	else
2708	ev_at (w) = w->offset;	2937	ev_at (w) = w->offset;
2709		2938
2710	EV_FREQUENT_CHECK;	2939	EV_FREQUENT_CHECK;
…		…
2831	sa.sa_handler = ev_sighandler;	3060	sa.sa_handler = ev_sighandler;
2832	sigfillset (&sa.sa_mask);	3061	sigfillset (&sa.sa_mask);
2833	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	3062	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2834	sigaction (w->signum, &sa, 0);	3063	sigaction (w->signum, &sa, 0);
2835		3064
		3065	if (origflags & EVFLAG_NOSIGMASK)
		3066	{
2836	sigemptyset (&sa.sa_mask);	3067	sigemptyset (&sa.sa_mask);
2837	sigaddset (&sa.sa_mask, w->signum);	3068	sigaddset (&sa.sa_mask, w->signum);
2838	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);	3069	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
		3070	}
2839	#endif	3071	#endif
2840	}	3072	}
2841		3073
2842	EV_FREQUENT_CHECK;	3074	EV_FREQUENT_CHECK;
2843	}	3075	}
…		…
2984	if (!pend || pend == path)	3216	if (!pend || pend == path)
2985	break;	3217	break;
2986		3218
2987	*pend = 0;	3219	*pend = 0;
2988	w->wd = inotify_add_watch (fs_fd, path, mask);	3220	w->wd = inotify_add_watch (fs_fd, path, mask);
2989	}	3221	}
2990	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	3222	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2991	}	3223	}
2992	}	3224	}
2993		3225
2994	if (w->wd >= 0)	3226	if (w->wd >= 0)
…		…
3061	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3293	infy_wd (EV_A_ ev->wd, ev->wd, ev);
3062	ofs += sizeof (struct inotify_event) + ev->len;	3294	ofs += sizeof (struct inotify_event) + ev->len;
3063	}	3295	}
3064	}	3296	}
3065		3297
3066	inline_size unsigned int
3067	ev_linux_version (void)
3068	{
3069	struct utsname buf;
3070	unsigned int v;
3071	int i;
3072	char *p = buf.release;
3073
3074	if (uname (&buf))
3075	return 0;
3076
3077	for (i = 3+1; --i; )
3078	{
3079	unsigned int c = 0;
3080
3081	for (;;)
3082	{
3083	if (*p >= '0' && *p <= '9')
3084	c = c * 10 + *p++ - '0';
3085	else
3086	{
3087	p += *p == '.';
3088	break;
3089	}
3090	}
3091
3092	v = (v << 8) | c;
3093	}
3094
3095	return v;
3096	}
3097
3098	inline_size void	3298	inline_size void ecb_cold
3099	ev_check_2625 (EV_P)	3299	ev_check_2625 (EV_P)
3100	{	3300	{
3101	/* kernels < 2.6.25 are borked	3301	/* kernels < 2.6.25 are borked
3102	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	3302	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3103	*/	3303	*/
…		…
3424		3624
3425	#if EV_EMBED_ENABLE	3625	#if EV_EMBED_ENABLE
3426	void noinline	3626	void noinline
3427	ev_embed_sweep (EV_P_ ev_embed *w)	3627	ev_embed_sweep (EV_P_ ev_embed *w)
3428	{	3628	{
3429	ev_loop (w->other, EVLOOP_NONBLOCK);	3629	ev_run (w->other, EVRUN_NOWAIT);
3430	}	3630	}
3431		3631
3432	static void	3632	static void
3433	embed_io_cb (EV_P_ ev_io *io, int revents)	3633	embed_io_cb (EV_P_ ev_io *io, int revents)
3434	{	3634	{
3435	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	3635	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3436		3636
3437	if (ev_cb (w))	3637	if (ev_cb (w))
3438	ev_feed_event (EV_A_ (W)w, EV_EMBED);	3638	ev_feed_event (EV_A_ (W)w, EV_EMBED);
3439	else	3639	else
3440	ev_loop (w->other, EVLOOP_NONBLOCK);	3640	ev_run (w->other, EVRUN_NOWAIT);
3441	}	3641	}
3442		3642
3443	static void	3643	static void
3444	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3644	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3445	{	3645	{
…		…
3449	EV_P = w->other;	3649	EV_P = w->other;
3450		3650
3451	while (fdchangecnt)	3651	while (fdchangecnt)
3452	{	3652	{
3453	fd_reify (EV_A);	3653	fd_reify (EV_A);
3454	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3654	ev_run (EV_A_ EVRUN_NOWAIT);
3455	}	3655	}
3456	}	3656	}
3457	}	3657	}
3458		3658
3459	static void	3659	static void
…		…
3465		3665
3466	{	3666	{
3467	EV_P = w->other;	3667	EV_P = w->other;
3468		3668
3469	ev_loop_fork (EV_A);	3669	ev_loop_fork (EV_A);
3470	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3670	ev_run (EV_A_ EVRUN_NOWAIT);
3471	}	3671	}
3472		3672
3473	ev_embed_start (EV_A_ w);	3673	ev_embed_start (EV_A_ w);
3474	}	3674	}
3475		3675
…		…
3567		3767
3568	EV_FREQUENT_CHECK;	3768	EV_FREQUENT_CHECK;
3569	}	3769	}
3570	#endif	3770	#endif
3571		3771
		3772	#if EV_CLEANUP_ENABLE
		3773	void
		3774	ev_cleanup_start (EV_P_ ev_cleanup *w)
		3775	{
		3776	if (expect_false (ev_is_active (w)))
		3777	return;
		3778
		3779	EV_FREQUENT_CHECK;
		3780
		3781	ev_start (EV_A_ (W)w, ++cleanupcnt);
		3782	array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
		3783	cleanups [cleanupcnt - 1] = w;
		3784
		3785	/* cleanup watchers should never keep a refcount on the loop */
		3786	ev_unref (EV_A);
		3787	EV_FREQUENT_CHECK;
		3788	}
		3789
		3790	void
		3791	ev_cleanup_stop (EV_P_ ev_cleanup *w)
		3792	{
		3793	clear_pending (EV_A_ (W)w);
		3794	if (expect_false (!ev_is_active (w)))
		3795	return;
		3796
		3797	EV_FREQUENT_CHECK;
		3798	ev_ref (EV_A);
		3799
		3800	{
		3801	int active = ev_active (w);
		3802
		3803	cleanups [active - 1] = cleanups [--cleanupcnt];
		3804	ev_active (cleanups [active - 1]) = active;
		3805	}
		3806
		3807	ev_stop (EV_A_ (W)w);
		3808
		3809	EV_FREQUENT_CHECK;
		3810	}
		3811	#endif
		3812
3572	#if EV_ASYNC_ENABLE	3813	#if EV_ASYNC_ENABLE
3573	void	3814	void
3574	ev_async_start (EV_P_ ev_async *w)	3815	ev_async_start (EV_P_ ev_async *w)
3575	{	3816	{
3576	if (expect_false (ev_is_active (w)))	3817	if (expect_false (ev_is_active (w)))
3577	return;	3818	return;
		3819
		3820	w->sent = 0;
3578		3821
3579	evpipe_init (EV_A);	3822	evpipe_init (EV_A);
3580		3823
3581	EV_FREQUENT_CHECK;	3824	EV_FREQUENT_CHECK;
3582		3825
…		…
3685	}	3928	}
3686		3929
3687	/*****************************************************************************/	3930	/*****************************************************************************/
3688		3931
3689	#if EV_WALK_ENABLE	3932	#if EV_WALK_ENABLE
3690	void	3933	void ecb_cold
3691	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))	3934	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3692	{	3935	{
3693	int i, j;	3936	int i, j;
3694	ev_watcher_list *wl, *wn;	3937	ev_watcher_list *wl, *wn;
3695		3938
…		…
3802		4045
3803	#if EV_MULTIPLICITY	4046	#if EV_MULTIPLICITY
3804	#include "ev_wrap.h"	4047	#include "ev_wrap.h"
3805	#endif	4048	#endif
3806		4049
3807	#ifdef __cplusplus	4050	EV_CPP(})
3808	}
3809	#endif
3810		4051

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