[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.343 by root, Fri Apr 2 21:03:46 2010 UTC vs.
Revision 1.379 by root, Sun Jun 19 17:55:13 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>
…		…
195	# ifndef EV_SELECT_IS_WINSOCKET	198	# ifndef EV_SELECT_IS_WINSOCKET
196	# define EV_SELECT_IS_WINSOCKET 1	199	# define EV_SELECT_IS_WINSOCKET 1
197	# endif	200	# endif
198	# undef EV_AVOID_STDIO	201	# undef EV_AVOID_STDIO
199	#endif	202	#endif
		203
		204	/* OS X, in its infinite idiocy, actually HARDCODES
		205	* a limit of 1024 into their select. Where people have brains,
		206	* OS X engineers apparently have a vacuum. Or maybe they were
		207	* ordered to have a vacuum, or they do anything for money.
		208	* This might help. Or not.
		209	*/
		210	#define _DARWIN_UNLIMITED_SELECT 1
200		211
201	/* this block tries to deduce configuration from header-defined symbols and defaults */	212	/* this block tries to deduce configuration from header-defined symbols and defaults */
202		213
203	/* try to deduce the maximum number of signals on this platform */	214	/* try to deduce the maximum number of signals on this platform */
204	#if defined (EV_NSIG)	215	#if defined (EV_NSIG)
…		…
226	/* to make it compile regardless, just remove the above line, */	237	/* to make it compile regardless, just remove the above line, */
227	/* but consider reporting it, too! :) */	238	/* but consider reporting it, too! :) */
228	# define EV_NSIG 65	239	# define EV_NSIG 65
229	#endif	240	#endif
230		241
		242	#ifndef EV_USE_FLOOR
		243	# define EV_USE_FLOOR 0
		244	#endif
		245
231	#ifndef EV_USE_CLOCK_SYSCALL	246	#ifndef EV_USE_CLOCK_SYSCALL
232	# if __linux && __GLIBC__ >= 2	247	# if __linux && __GLIBC__ >= 2
233	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS	248	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
234	# else	249	# else
235	# define EV_USE_CLOCK_SYSCALL 0	250	# define EV_USE_CLOCK_SYSCALL 0
…		…
370	# undef EV_USE_INOTIFY	385	# undef EV_USE_INOTIFY
371	# define EV_USE_INOTIFY 0	386	# define EV_USE_INOTIFY 0
372	#endif	387	#endif
373		388
374	#if !EV_USE_NANOSLEEP	389	#if !EV_USE_NANOSLEEP
375	# ifndef _WIN32	390	/* hp-ux has it in sys/time.h, which we unconditionally include above */
		391	# if !defined(_WIN32) && !defined(__hpux)
376	# include <sys/select.h>	392	# include <sys/select.h>
377	# endif	393	# endif
378	#endif	394	#endif
379		395
380	#if EV_USE_INOTIFY	396	#if EV_USE_INOTIFY
381	# include <sys/utsname.h>
382	# include <sys/statfs.h>	397	# include <sys/statfs.h>
383	# include <sys/inotify.h>	398	# include <sys/inotify.h>
384	/* 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 */
385	# ifndef IN_DONT_FOLLOW	400	# ifndef IN_DONT_FOLLOW
386	# undef EV_USE_INOTIFY	401	# undef EV_USE_INOTIFY
…		…
403	# define EFD_CLOEXEC O_CLOEXEC	418	# define EFD_CLOEXEC O_CLOEXEC
404	# else	419	# else
405	# define EFD_CLOEXEC 02000000	420	# define EFD_CLOEXEC 02000000
406	# endif	421	# endif
407	# endif	422	# endif
408	# ifdef __cplusplus
409	extern "C" {
410	# endif
411	int (eventfd) (unsigned int initval, int flags);	423	EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
412	# ifdef __cplusplus
413	}
414	# endif
415	#endif	424	#endif
416		425
417	#if EV_USE_SIGNALFD	426	#if EV_USE_SIGNALFD
418	/* 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 */
419	# include <stdint.h>	428	# include <stdint.h>
…		…
425	# define SFD_CLOEXEC O_CLOEXEC	434	# define SFD_CLOEXEC O_CLOEXEC
426	# else	435	# else
427	# define SFD_CLOEXEC 02000000	436	# define SFD_CLOEXEC 02000000
428	# endif	437	# endif
429	# endif	438	# endif
430	# ifdef __cplusplus
431	extern "C" {
432	# endif
433	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);
434		440
435	struct signalfd_siginfo	441	struct signalfd_siginfo
436	{	442	{
437	uint32_t ssi_signo;	443	uint32_t ssi_signo;
438	char pad[128 - sizeof (uint32_t)];	444	char pad[128 - sizeof (uint32_t)];
439	};	445	};
440	# ifdef __cplusplus
441	}
442	# endif	446	#endif
443	#endif
444
445		447
446	/**/	448	/**/
447		449
448	#if EV_VERIFY >= 3	450	#if EV_VERIFY >= 3
449	# define EV_FREQUENT_CHECK ev_verify (EV_A)	451	# define EV_FREQUENT_CHECK ev_verify (EV_A)
450	#else	452	#else
451	# define EV_FREQUENT_CHECK do { } while (0)	453	# define EV_FREQUENT_CHECK do { } while (0)
452	#endif	454	#endif
453		455
454	/*	456	/*
455	* This is used to avoid floating point rounding problems.	457	* This is used to work around floating point rounding problems.
456	* It is added to ev_rt_now when scheduling periodics
457	* to ensure progress, time-wise, even when rounding
458	* errors are against us.
459	* This value is good at least till the year 4000.	458	* This value is good at least till the year 4000.
460	* Better solutions welcome.
461	*/	459	*/
462	#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 /
463		462
464	#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) */
465	#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) */
466		465
467	#if __GNUC__ >= 4	466	#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
468	# define expect(expr,value) __builtin_expect ((expr),(value))	467	#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
469	# define noinline __attribute__ ((noinline))	468
		469	/* the following are taken from libecb */
		470	/* ecb.h start */
		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
470	#else	493	#else
471	# define expect(expr,value) (expr)	494	#define ecb_inline static
472	# define noinline
473	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
474	# define inline
475	# endif	495	#endif
476	#endif
477		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. */
478	#define expect_false(expr) expect ((expr) != 0, 0)	528	#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
479	#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
480	#define inline_size static inline	536	#define inline_size ecb_inline
481		537
482	#if EV_FEATURE_CODE	538	#if EV_FEATURE_CODE
483	# define inline_speed static inline	539	# define inline_speed ecb_inline
484	#else	540	#else
485	# define inline_speed static noinline	541	# define inline_speed static noinline
486	#endif	542	#endif
487		543
488	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	544	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
…		…
503	#define ev_active(w) ((W)(w))->active	559	#define ev_active(w) ((W)(w))->active
504	#define ev_at(w) ((WT)(w))->at	560	#define ev_at(w) ((WT)(w))->at
505		561
506	#if EV_USE_REALTIME	562	#if EV_USE_REALTIME
507	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	563	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
508	/* giving it a reasonably high chance of working on typical architetcures */	564	/* giving it a reasonably high chance of working on typical architectures */
509	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */	565	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
510	#endif	566	#endif
511		567
512	#if EV_USE_MONOTONIC	568	#if EV_USE_MONOTONIC
513	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	569	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
…		…
527	# include "ev_win32.c"	583	# include "ev_win32.c"
528	#endif	584	#endif
529		585
530	/*****************************************************************************/	586	/*****************************************************************************/
531		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
532	#if EV_AVOID_STDIO	678	#if EV_AVOID_STDIO
533	static void noinline	679	static void noinline ecb_cold
534	ev_printerr (const char *msg)	680	ev_printerr (const char *msg)
535	{	681	{
536	write (STDERR_FILENO, msg, strlen (msg));	682	write (STDERR_FILENO, msg, strlen (msg));
537	}	683	}
538	#endif	684	#endif
539		685
540	static void (syserr_cb)(const char msg);	686	static void (syserr_cb)(const char msg);
541		687
542	void	688	void ecb_cold
543	ev_set_syserr_cb (void (cb)(const char msg))	689	ev_set_syserr_cb (void (cb)(const char msg))
544	{	690	{
545	syserr_cb = cb;	691	syserr_cb = cb;
546	}	692	}
547		693
548	static void noinline	694	static void noinline ecb_cold
549	ev_syserr (const char *msg)	695	ev_syserr (const char *msg)
550	{	696	{
551	if (!msg)	697	if (!msg)
552	msg = "(libev) system error";	698	msg = "(libev) system error";
553		699
554	if (syserr_cb)	700	if (syserr_cb)
555	syserr_cb (msg);	701	syserr_cb (msg);
556	else	702	else
557	{	703	{
558	#if EV_AVOID_STDIO	704	#if EV_AVOID_STDIO
559	const char *err = strerror (errno);
560
561	ev_printerr (msg);	705	ev_printerr (msg);
562	ev_printerr (": ");	706	ev_printerr (": ");
563	ev_printerr (err);	707	ev_printerr (strerror (errno));
564	ev_printerr ("\n");	708	ev_printerr ("\n");
565	#else	709	#else
566	perror (msg);	710	perror (msg);
567	#endif	711	#endif
568	abort ();	712	abort ();
…		…
588	#endif	732	#endif
589	}	733	}
590		734
591	static void (alloc)(void *ptr, long size) = ev_realloc_emul;	735	static void (alloc)(void *ptr, long size) = ev_realloc_emul;
592		736
593	void	737	void ecb_cold
594	ev_set_allocator (void (cb)(void *ptr, long size))	738	ev_set_allocator (void (cb)(void *ptr, long size))
595	{	739	{
596	alloc = cb;	740	alloc = cb;
597	}	741	}
598		742
…		…
602	ptr = alloc (ptr, size);	746	ptr = alloc (ptr, size);
603		747
604	if (!ptr && size)	748	if (!ptr && size)
605	{	749	{
606	#if EV_AVOID_STDIO	750	#if EV_AVOID_STDIO
607	ev_printerr ("libev: memory allocation failed, aborting.\n");	751	ev_printerr ("(libev) memory allocation failed, aborting.\n");
608	#else	752	#else
609	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	753	fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
610	#endif	754	#endif
611	abort ();	755	abort ();
612	}	756	}
613		757
614	return ptr;	758	return ptr;
…		…
631	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 */
632	unsigned char unused;	776	unsigned char unused;
633	#if EV_USE_EPOLL	777	#if EV_USE_EPOLL
634	unsigned int egen; /* generation counter to counter epoll bugs */	778	unsigned int egen; /* generation counter to counter epoll bugs */
635	#endif	779	#endif
636	#if EV_SELECT_IS_WINSOCKET	780	#if EV_SELECT_IS_WINSOCKET \|\| EV_USE_IOCP
637	SOCKET handle;	781	SOCKET handle;
		782	#endif
		783	#if EV_USE_IOCP
		784	OVERLAPPED or, ow;
638	#endif	785	#endif
639	} ANFD;	786	} ANFD;
640		787
641	/* stores the pending event set for a given watcher */	788	/* stores the pending event set for a given watcher */
642	typedef struct	789	typedef struct
…		…
707	# define EV_RELEASE_CB (void)0	854	# define EV_RELEASE_CB (void)0
708	# define EV_ACQUIRE_CB (void)0	855	# define EV_ACQUIRE_CB (void)0
709	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)	856	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
710	#endif	857	#endif
711		858
712	#define EVUNLOOP_RECURSE 0x80	859	#define EVBREAK_RECURSE 0x80
713		860
714	/*****************************************************************************/	861	/*****************************************************************************/
715		862
716	#ifndef EV_HAVE_EV_TIME	863	#ifndef EV_HAVE_EV_TIME
717	ev_tstamp	864	ev_tstamp
…		…
761	if (delay > 0.)	908	if (delay > 0.)
762	{	909	{
763	#if EV_USE_NANOSLEEP	910	#if EV_USE_NANOSLEEP
764	struct timespec ts;	911	struct timespec ts;
765		912
766	ts.tv_sec = (time_t)delay;	913	EV_TS_SET (ts, delay);
767	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
768
769	nanosleep (&ts, 0);	914	nanosleep (&ts, 0);
770	#elif defined(_WIN32)	915	#elif defined(_WIN32)
771	Sleep ((unsigned long)(delay * 1e3));	916	Sleep ((unsigned long)(delay * 1e3));
772	#else	917	#else
773	struct timeval tv;	918	struct timeval tv;
774		919
775	tv.tv_sec = (time_t)delay;
776	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
777
778	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	920	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
779	/* something not guaranteed by newer posix versions, but guaranteed */	921	/* something not guaranteed by newer posix versions, but guaranteed */
780	/* by older ones */	922	/* by older ones */
		923	EV_TV_SET (tv, delay);
781	select (0, 0, 0, 0, &tv);	924	select (0, 0, 0, 0, &tv);
782	#endif	925	#endif
783	}	926	}
784	}	927	}
785		928
786	/*****************************************************************************/	929	/*****************************************************************************/
787		930
788	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2*n and >> 4 longs /	931	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2*n and >> 4 longs /
789		932
790	/* find a suitable new size for the given array, */	933	/* find a suitable new size for the given array, */
791	/* hopefully by rounding to a ncie-to-malloc size */	934	/* hopefully by rounding to a nice-to-malloc size */
792	inline_size int	935	inline_size int
793	array_nextsize (int elem, int cur, int cnt)	936	array_nextsize (int elem, int cur, int cnt)
794	{	937	{
795	int ncur = cur + 1;	938	int ncur = cur + 1;
796		939
…		…
808	}	951	}
809		952
810	return ncur;	953	return ncur;
811	}	954	}
812		955
813	static noinline void *	956	static void * noinline ecb_cold
814	array_realloc (int elem, void base, int cur, int cnt)	957	array_realloc (int elem, void base, int cur, int cnt)
815	{	958	{
816	cur = array_nextsize (elem, cur, cnt);	959	cur = array_nextsize (elem, cur, cnt);
817	return ev_realloc (base, elem * *cur);	960	return ev_realloc (base, elem * *cur);
818	}	961	}
…		…
931	inline_size void	1074	inline_size void
932	fd_reify (EV_P)	1075	fd_reify (EV_P)
933	{	1076	{
934	int i;	1077	int i;
935		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
936	for (i = 0; i < fdchangecnt; ++i)	1104	for (i = 0; i < fdchangecnt; ++i)
937	{	1105	{
938	int fd = fdchanges [i];	1106	int fd = fdchanges [i];
939	ANFD *anfd = anfds + fd;	1107	ANFD *anfd = anfds + fd;
940	ev_io *w;	1108	ev_io *w;
941		1109
942	unsigned char events = 0;	1110	unsigned char o_events = anfd->events;
		1111	unsigned char o_reify = anfd->reify;
943		1112
944	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	1113	anfd->reify = 0;
945	events \|= (unsigned char)w->events;
946		1114
947	#if EV_SELECT_IS_WINSOCKET	1115	/if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation /
948	if (events)
949	{	1116	{
950	unsigned long arg;	1117	anfd->events = 0;
951	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	1118
952	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 \|= */
953	}	1124	}
954	#endif
955		1125
956	{	1126	if (o_reify & EV__IOFDSET)
957	unsigned char o_events = anfd->events;
958	unsigned char o_reify = anfd->reify;
959
960	anfd->reify = 0;
961	anfd->events = events;
962
963	if (o_events != events \|\| o_reify & EV__IOFDSET)
964	backend_modify (EV_A_ fd, o_events, events);	1127	backend_modify (EV_A_ fd, o_events, anfd->events);
965	}
966	}	1128	}
967		1129
968	fdchangecnt = 0;	1130	fdchangecnt = 0;
969	}	1131	}
970		1132
…		…
982	fdchanges [fdchangecnt - 1] = fd;	1144	fdchanges [fdchangecnt - 1] = fd;
983	}	1145	}
984	}	1146	}
985		1147
986	/* 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 */
987	inline_speed void	1149	inline_speed void ecb_cold
988	fd_kill (EV_P_ int fd)	1150	fd_kill (EV_P_ int fd)
989	{	1151	{
990	ev_io *w;	1152	ev_io *w;
991		1153
992	while ((w = (ev_io *)anfds [fd].head))	1154	while ((w = (ev_io *)anfds [fd].head))
…		…
995	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);
996	}	1158	}
997	}	1159	}
998		1160
999	/* check whether the given fd is actually valid, for error recovery */	1161	/* check whether the given fd is actually valid, for error recovery */
1000	inline_size int	1162	inline_size int ecb_cold
1001	fd_valid (int fd)	1163	fd_valid (int fd)
1002	{	1164	{
1003	#ifdef _WIN32	1165	#ifdef _WIN32
1004	return EV_FD_TO_WIN32_HANDLE (fd) != -1;	1166	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1005	#else	1167	#else
1006	return fcntl (fd, F_GETFD) != -1;	1168	return fcntl (fd, F_GETFD) != -1;
1007	#endif	1169	#endif
1008	}	1170	}
1009		1171
1010	/* called on EBADF to verify fds */	1172	/* called on EBADF to verify fds */
1011	static void noinline	1173	static void noinline ecb_cold
1012	fd_ebadf (EV_P)	1174	fd_ebadf (EV_P)
1013	{	1175	{
1014	int fd;	1176	int fd;
1015		1177
1016	for (fd = 0; fd < anfdmax; ++fd)	1178	for (fd = 0; fd < anfdmax; ++fd)
…		…
1018	if (!fd_valid (fd) && errno == EBADF)	1180	if (!fd_valid (fd) && errno == EBADF)
1019	fd_kill (EV_A_ fd);	1181	fd_kill (EV_A_ fd);
1020	}	1182	}
1021		1183
1022	/* 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 */
1023	static void noinline	1185	static void noinline ecb_cold
1024	fd_enomem (EV_P)	1186	fd_enomem (EV_P)
1025	{	1187	{
1026	int fd;	1188	int fd;
1027		1189
1028	for (fd = anfdmax; fd--; )	1190	for (fd = anfdmax; fd--; )
…		…
1063	}	1225	}
1064		1226
1065	/*****************************************************************************/	1227	/*****************************************************************************/
1066		1228
1067	/*	1229	/*
1068	* the heap functions want a real array index. array index 0 uis guaranteed to not	1230	* the heap functions want a real array index. array index 0 is guaranteed to not
1069	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives	1231	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1070	* the branching factor of the d-tree.	1232	* the branching factor of the d-tree.
1071	*/	1233	*/
1072		1234
1073	/*	1235	/*
…		…
1223		1385
1224	/*****************************************************************************/	1386	/*****************************************************************************/
1225		1387
1226	#if EV_SIGNAL_ENABLE \|\| EV_ASYNC_ENABLE	1388	#if EV_SIGNAL_ENABLE \|\| EV_ASYNC_ENABLE
1227		1389
1228	static void noinline	1390	static void noinline ecb_cold
1229	evpipe_init (EV_P)	1391	evpipe_init (EV_P)
1230	{	1392	{
1231	if (!ev_is_active (&pipe_w))	1393	if (!ev_is_active (&pipe_w))
1232	{	1394	{
1233	# if EV_USE_EVENTFD	1395	# if EV_USE_EVENTFD
…		…
1260	inline_size void	1422	inline_size void
1261	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1423	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1262	{	1424	{
1263	if (!*flag)	1425	if (!*flag)
1264	{	1426	{
1265	int old_errno = errno; /* save errno because write might clobber it */
1266	char dummy;
1267
1268	*flag = 1;	1427	*flag = 1;
1269		1428
		1429	pipe_write_skipped = 1;
		1430
		1431	if (pipe_write_wanted)
		1432	{
		1433	int old_errno = errno; /* save errno because write will clobber it */
		1434	char dummy;
		1435
		1436	pipe_write_skipped = 0;
		1437
1270	#if EV_USE_EVENTFD	1438	#if EV_USE_EVENTFD
1271	if (evfd >= 0)	1439	if (evfd >= 0)
1272	{	1440	{
1273	uint64_t counter = 1;	1441	uint64_t counter = 1;
1274	write (evfd, &counter, sizeof (uint64_t));	1442	write (evfd, &counter, sizeof (uint64_t));
		1443	}
		1444	else
		1445	#endif
		1446	{
		1447	/* win32 people keep sending patches that change this write() to send() */
		1448	/* and then run away. but send() is wrong, it wants a socket handle on win32 */
		1449	/* so when you think this write should be a send instead, please find out */
		1450	/* where your send() is from - it's definitely not the microsoft send, and */
		1451	/* tell me. thank you. */
		1452	write (evpipe [1], &dummy, 1);
		1453	}
		1454
		1455	errno = old_errno;
1275	}	1456	}
1276	else
1277	#endif
1278	write (evpipe [1], &dummy, 1);
1279
1280	errno = old_errno;
1281	}	1457	}
1282	}	1458	}
1283		1459
1284	/* called whenever the libev signal pipe */	1460	/* called whenever the libev signal pipe */
1285	/* got some events (signal, async) */	1461	/* got some events (signal, async) */
1286	static void	1462	static void
1287	pipecb (EV_P_ ev_io *iow, int revents)	1463	pipecb (EV_P_ ev_io *iow, int revents)
1288	{	1464	{
1289	int i;	1465	int i;
1290		1466
		1467	if (revents & EV_READ)
		1468	{
1291	#if EV_USE_EVENTFD	1469	#if EV_USE_EVENTFD
1292	if (evfd >= 0)	1470	if (evfd >= 0)
1293	{	1471	{
1294	uint64_t counter;	1472	uint64_t counter;
1295	read (evfd, &counter, sizeof (uint64_t));	1473	read (evfd, &counter, sizeof (uint64_t));
1296	}	1474	}
1297	else	1475	else
1298	#endif	1476	#endif
1299	{	1477	{
1300	char dummy;	1478	char dummy;
		1479	/* see discussion in evpipe_write when you think this read should be recv in win32 */
1301	read (evpipe [0], &dummy, 1);	1480	read (evpipe [0], &dummy, 1);
		1481	}
1302	}	1482	}
1303		1483
		1484	pipe_write_skipped = 0;
		1485
		1486	#if EV_SIGNAL_ENABLE
1304	if (sig_pending)	1487	if (sig_pending)
1305	{	1488	{
1306	sig_pending = 0;	1489	sig_pending = 0;
1307		1490
1308	for (i = EV_NSIG - 1; i--; )	1491	for (i = EV_NSIG - 1; i--; )
1309	if (expect_false (signals [i].pending))	1492	if (expect_false (signals [i].pending))
1310	ev_feed_signal_event (EV_A_ i + 1);	1493	ev_feed_signal_event (EV_A_ i + 1);
1311	}	1494	}
		1495	#endif
1312		1496
1313	#if EV_ASYNC_ENABLE	1497	#if EV_ASYNC_ENABLE
1314	if (async_pending)	1498	if (async_pending)
1315	{	1499	{
1316	async_pending = 0;	1500	async_pending = 0;
…		…
1325	#endif	1509	#endif
1326	}	1510	}
1327		1511
1328	/*****************************************************************************/	1512	/*****************************************************************************/
1329		1513
		1514	void
		1515	ev_feed_signal (int signum)
		1516	{
		1517	#if EV_MULTIPLICITY
		1518	EV_P = signals [signum - 1].loop;
		1519
		1520	if (!EV_A)
		1521	return;
		1522	#endif
		1523
		1524	evpipe_init (EV_A);
		1525
		1526	signals [signum - 1].pending = 1;
		1527	evpipe_write (EV_A_ &sig_pending);
		1528	}
		1529
1330	static void	1530	static void
1331	ev_sighandler (int signum)	1531	ev_sighandler (int signum)
1332	{	1532	{
1333	#if EV_MULTIPLICITY
1334	EV_P = signals [signum - 1].loop;
1335	#endif
1336
1337	#ifdef _WIN32	1533	#ifdef _WIN32
1338	signal (signum, ev_sighandler);	1534	signal (signum, ev_sighandler);
1339	#endif	1535	#endif
1340		1536
1341	signals [signum - 1].pending = 1;	1537	ev_feed_signal (signum);
1342	evpipe_write (EV_A_ &sig_pending);
1343	}	1538	}
1344		1539
1345	void noinline	1540	void noinline
1346	ev_feed_signal_event (EV_P_ int signum)	1541	ev_feed_signal_event (EV_P_ int signum)
1347	{	1542	{
…		…
1447		1642
1448	#endif	1643	#endif
1449		1644
1450	/*****************************************************************************/	1645	/*****************************************************************************/
1451		1646
		1647	#if EV_USE_IOCP
		1648	# include "ev_iocp.c"
		1649	#endif
1452	#if EV_USE_PORT	1650	#if EV_USE_PORT
1453	# include "ev_port.c"	1651	# include "ev_port.c"
1454	#endif	1652	#endif
1455	#if EV_USE_KQUEUE	1653	#if EV_USE_KQUEUE
1456	# include "ev_kqueue.c"	1654	# include "ev_kqueue.c"
…		…
1463	#endif	1661	#endif
1464	#if EV_USE_SELECT	1662	#if EV_USE_SELECT
1465	# include "ev_select.c"	1663	# include "ev_select.c"
1466	#endif	1664	#endif
1467		1665
1468	int	1666	int ecb_cold
1469	ev_version_major (void)	1667	ev_version_major (void)
1470	{	1668	{
1471	return EV_VERSION_MAJOR;	1669	return EV_VERSION_MAJOR;
1472	}	1670	}
1473		1671
1474	int	1672	int ecb_cold
1475	ev_version_minor (void)	1673	ev_version_minor (void)
1476	{	1674	{
1477	return EV_VERSION_MINOR;	1675	return EV_VERSION_MINOR;
1478	}	1676	}
1479		1677
1480	/* return true if we are running with elevated privileges and should ignore env variables */	1678	/* return true if we are running with elevated privileges and should ignore env variables */
1481	int inline_size	1679	int inline_size ecb_cold
1482	enable_secure (void)	1680	enable_secure (void)
1483	{	1681	{
1484	#ifdef _WIN32	1682	#ifdef _WIN32
1485	return 0;	1683	return 0;
1486	#else	1684	#else
1487	return getuid () != geteuid ()	1685	return getuid () != geteuid ()
1488	\|\| getgid () != getegid ();	1686	\|\| getgid () != getegid ();
1489	#endif	1687	#endif
1490	}	1688	}
1491		1689
1492	unsigned int	1690	unsigned int ecb_cold
1493	ev_supported_backends (void)	1691	ev_supported_backends (void)
1494	{	1692	{
1495	unsigned int flags = 0;	1693	unsigned int flags = 0;
1496		1694
1497	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;	1695	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
…		…
1501	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;	1699	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
1502		1700
1503	return flags;	1701	return flags;
1504	}	1702	}
1505		1703
1506	unsigned int	1704	unsigned int ecb_cold
1507	ev_recommended_backends (void)	1705	ev_recommended_backends (void)
1508	{	1706	{
1509	unsigned int flags = ev_supported_backends ();	1707	unsigned int flags = ev_supported_backends ();
1510		1708
1511	#ifndef __NetBSD__	1709	#ifndef __NetBSD__
…		…
1523	#endif	1721	#endif
1524		1722
1525	return flags;	1723	return flags;
1526	}	1724	}
1527		1725
1528	unsigned int	1726	unsigned int ecb_cold
1529	ev_embeddable_backends (void)	1727	ev_embeddable_backends (void)
1530	{	1728	{
1531	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;	1729	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
1532		1730
1533	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */	1731	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1534	/* please fix it and tell me how to detect the fix */	1732	if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1535	flags &= ~EVBACKEND_EPOLL;	1733	flags &= ~EVBACKEND_EPOLL;
1536		1734
1537	return flags;	1735	return flags;
1538	}	1736	}
1539		1737
1540	unsigned int	1738	unsigned int
…		…
1578	ev_userdata (EV_P)	1776	ev_userdata (EV_P)
1579	{	1777	{
1580	return userdata;	1778	return userdata;
1581	}	1779	}
1582		1780
		1781	void
1583	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))	1782	ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1584	{	1783	{
1585	invoke_cb = invoke_pending_cb;	1784	invoke_cb = invoke_pending_cb;
1586	}	1785	}
1587		1786
		1787	void
1588	void ev_set_loop_release_cb (EV_P_ void (release)(EV_P), void (acquire)(EV_P))	1788	ev_set_loop_release_cb (EV_P_ void (release)(EV_P), void (acquire)(EV_P))
1589	{	1789	{
1590	release_cb = release;	1790	release_cb = release;
1591	acquire_cb = acquire;	1791	acquire_cb = acquire;
1592	}	1792	}
1593	#endif	1793	#endif
1594		1794
1595	/* initialise a loop structure, must be zero-initialised */	1795	/* initialise a loop structure, must be zero-initialised */
1596	static void noinline	1796	static void noinline ecb_cold
1597	loop_init (EV_P_ unsigned int flags)	1797	loop_init (EV_P_ unsigned int flags)
1598	{	1798	{
1599	if (!backend)	1799	if (!backend)
1600	{	1800	{
		1801	origflags = flags;
		1802
1601	#if EV_USE_REALTIME	1803	#if EV_USE_REALTIME
1602	if (!have_realtime)	1804	if (!have_realtime)
1603	{	1805	{
1604	struct timespec ts;	1806	struct timespec ts;
1605		1807
…		…
1627	if (!(flags & EVFLAG_NOENV)	1829	if (!(flags & EVFLAG_NOENV)
1628	&& !enable_secure ()	1830	&& !enable_secure ()
1629	&& getenv ("LIBEV_FLAGS"))	1831	&& getenv ("LIBEV_FLAGS"))
1630	flags = atoi (getenv ("LIBEV_FLAGS"));	1832	flags = atoi (getenv ("LIBEV_FLAGS"));
1631		1833
1632	ev_rt_now = ev_time ();	1834	ev_rt_now = ev_time ();
1633	mn_now = get_clock ();	1835	mn_now = get_clock ();
1634	now_floor = mn_now;	1836	now_floor = mn_now;
1635	rtmn_diff = ev_rt_now - mn_now;	1837	rtmn_diff = ev_rt_now - mn_now;
1636	#if EV_FEATURE_API	1838	#if EV_FEATURE_API
1637	invoke_cb = ev_invoke_pending;	1839	invoke_cb = ev_invoke_pending;
1638	#endif	1840	#endif
1639		1841
1640	io_blocktime = 0.;	1842	io_blocktime = 0.;
1641	timeout_blocktime = 0.;	1843	timeout_blocktime = 0.;
1642	backend = 0;	1844	backend = 0;
1643	backend_fd = -1;	1845	backend_fd = -1;
1644	sig_pending = 0;	1846	sig_pending = 0;
1645	#if EV_ASYNC_ENABLE	1847	#if EV_ASYNC_ENABLE
1646	async_pending = 0;	1848	async_pending = 0;
1647	#endif	1849	#endif
		1850	pipe_write_skipped = 0;
		1851	pipe_write_wanted = 0;
1648	#if EV_USE_INOTIFY	1852	#if EV_USE_INOTIFY
1649	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;	1853	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1650	#endif	1854	#endif
1651	#if EV_USE_SIGNALFD	1855	#if EV_USE_SIGNALFD
1652	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;	1856	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1653	#endif	1857	#endif
1654		1858
1655	if (!(flags & 0x0000ffffU))	1859	if (!(flags & EVBACKEND_MASK))
1656	flags \|= ev_recommended_backends ();	1860	flags \|= ev_recommended_backends ();
1657		1861
		1862	#if EV_USE_IOCP
		1863	if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
		1864	#endif
1658	#if EV_USE_PORT	1865	#if EV_USE_PORT
1659	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1866	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1660	#endif	1867	#endif
1661	#if EV_USE_KQUEUE	1868	#if EV_USE_KQUEUE
1662	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1869	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
1679	#endif	1886	#endif
1680	}	1887	}
1681	}	1888	}
1682		1889
1683	/* free up a loop structure */	1890	/* free up a loop structure */
1684	static void noinline	1891	void ecb_cold
1685	loop_destroy (EV_P)	1892	ev_loop_destroy (EV_P)
1686	{	1893	{
1687	int i;	1894	int i;
		1895
		1896	#if EV_MULTIPLICITY
		1897	/* mimic free (0) */
		1898	if (!EV_A)
		1899	return;
		1900	#endif
		1901
		1902	#if EV_CLEANUP_ENABLE
		1903	/* queue cleanup watchers (and execute them) */
		1904	if (expect_false (cleanupcnt))
		1905	{
		1906	queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
		1907	EV_INVOKE_PENDING;
		1908	}
		1909	#endif
		1910
		1911	#if EV_CHILD_ENABLE
		1912	if (ev_is_active (&childev))
		1913	{
		1914	ev_ref (EV_A); /* child watcher */
		1915	ev_signal_stop (EV_A_ &childev);
		1916	}
		1917	#endif
1688		1918
1689	if (ev_is_active (&pipe_w))	1919	if (ev_is_active (&pipe_w))
1690	{	1920	{
1691	/ev_ref (EV_A);/	1921	/ev_ref (EV_A);/
1692	/ev_io_stop (EV_A_ &pipe_w);/	1922	/ev_io_stop (EV_A_ &pipe_w);/
…		…
1714	#endif	1944	#endif
1715		1945
1716	if (backend_fd >= 0)	1946	if (backend_fd >= 0)
1717	close (backend_fd);	1947	close (backend_fd);
1718		1948
		1949	#if EV_USE_IOCP
		1950	if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
		1951	#endif
1719	#if EV_USE_PORT	1952	#if EV_USE_PORT
1720	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1953	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1721	#endif	1954	#endif
1722	#if EV_USE_KQUEUE	1955	#if EV_USE_KQUEUE
1723	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);	1956	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
…		…
1750	array_free (periodic, EMPTY);	1983	array_free (periodic, EMPTY);
1751	#endif	1984	#endif
1752	#if EV_FORK_ENABLE	1985	#if EV_FORK_ENABLE
1753	array_free (fork, EMPTY);	1986	array_free (fork, EMPTY);
1754	#endif	1987	#endif
		1988	#if EV_CLEANUP_ENABLE
		1989	array_free (cleanup, EMPTY);
		1990	#endif
1755	array_free (prepare, EMPTY);	1991	array_free (prepare, EMPTY);
1756	array_free (check, EMPTY);	1992	array_free (check, EMPTY);
1757	#if EV_ASYNC_ENABLE	1993	#if EV_ASYNC_ENABLE
1758	array_free (async, EMPTY);	1994	array_free (async, EMPTY);
1759	#endif	1995	#endif
1760		1996
1761	backend = 0;	1997	backend = 0;
		1998
		1999	#if EV_MULTIPLICITY
		2000	if (ev_is_default_loop (EV_A))
		2001	#endif
		2002	ev_default_loop_ptr = 0;
		2003	#if EV_MULTIPLICITY
		2004	else
		2005	ev_free (EV_A);
		2006	#endif
1762	}	2007	}
1763		2008
1764	#if EV_USE_INOTIFY	2009	#if EV_USE_INOTIFY
1765	inline_size void infy_fork (EV_P);	2010	inline_size void infy_fork (EV_P);
1766	#endif	2011	#endif
…		…
1781	infy_fork (EV_A);	2026	infy_fork (EV_A);
1782	#endif	2027	#endif
1783		2028
1784	if (ev_is_active (&pipe_w))	2029	if (ev_is_active (&pipe_w))
1785	{	2030	{
1786	/* this "locks" the handlers against writing to the pipe */	2031	/* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1787	/* while we modify the fd vars */
1788	sig_pending = 1;
1789	#if EV_ASYNC_ENABLE
1790	async_pending = 1;
1791	#endif
1792		2032
1793	ev_ref (EV_A);	2033	ev_ref (EV_A);
1794	ev_io_stop (EV_A_ &pipe_w);	2034	ev_io_stop (EV_A_ &pipe_w);
1795		2035
1796	#if EV_USE_EVENTFD	2036	#if EV_USE_EVENTFD
…		…
1814	postfork = 0;	2054	postfork = 0;
1815	}	2055	}
1816		2056
1817	#if EV_MULTIPLICITY	2057	#if EV_MULTIPLICITY
1818		2058
1819	struct ev_loop *	2059	struct ev_loop * ecb_cold
1820	ev_loop_new (unsigned int flags)	2060	ev_loop_new (unsigned int flags)
1821	{	2061	{
1822	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	2062	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1823		2063
1824	memset (EV_A, 0, sizeof (struct ev_loop));	2064	memset (EV_A, 0, sizeof (struct ev_loop));
1825	loop_init (EV_A_ flags);	2065	loop_init (EV_A_ flags);
1826		2066
1827	if (ev_backend (EV_A))	2067	if (ev_backend (EV_A))
1828	return EV_A;	2068	return EV_A;
1829		2069
		2070	ev_free (EV_A);
1830	return 0;	2071	return 0;
1831	}	2072	}
1832		2073
1833	void
1834	ev_loop_destroy (EV_P)
1835	{
1836	loop_destroy (EV_A);
1837	ev_free (loop);
1838	}
1839
1840	void
1841	ev_loop_fork (EV_P)
1842	{
1843	postfork = 1; /* must be in line with ev_default_fork */
1844	}
1845	#endif /* multiplicity */	2074	#endif /* multiplicity */
1846		2075
1847	#if EV_VERIFY	2076	#if EV_VERIFY
1848	static void noinline	2077	static void noinline ecb_cold
1849	verify_watcher (EV_P_ W w)	2078	verify_watcher (EV_P_ W w)
1850	{	2079	{
1851	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	2080	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1852		2081
1853	if (w->pending)	2082	if (w->pending)
1854	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	2083	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1855	}	2084	}
1856		2085
1857	static void noinline	2086	static void noinline ecb_cold
1858	verify_heap (EV_P_ ANHE *heap, int N)	2087	verify_heap (EV_P_ ANHE *heap, int N)
1859	{	2088	{
1860	int i;	2089	int i;
1861		2090
1862	for (i = HEAP0; i < N + HEAP0; ++i)	2091	for (i = HEAP0; i < N + HEAP0; ++i)
…		…
1867		2096
1868	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	2097	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1869	}	2098	}
1870	}	2099	}
1871		2100
1872	static void noinline	2101	static void noinline ecb_cold
1873	array_verify (EV_P_ W *ws, int cnt)	2102	array_verify (EV_P_ W *ws, int cnt)
1874	{	2103	{
1875	while (cnt--)	2104	while (cnt--)
1876	{	2105	{
1877	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));	2106	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
…		…
1879	}	2108	}
1880	}	2109	}
1881	#endif	2110	#endif
1882		2111
1883	#if EV_FEATURE_API	2112	#if EV_FEATURE_API
1884	void	2113	void ecb_cold
1885	ev_verify (EV_P)	2114	ev_verify (EV_P)
1886	{	2115	{
1887	#if EV_VERIFY	2116	#if EV_VERIFY
1888	int i;	2117	int i;
1889	WL w;	2118	WL w;
…		…
1924	#if EV_FORK_ENABLE	2153	#if EV_FORK_ENABLE
1925	assert (forkmax >= forkcnt);	2154	assert (forkmax >= forkcnt);
1926	array_verify (EV_A_ (W *)forks, forkcnt);	2155	array_verify (EV_A_ (W *)forks, forkcnt);
1927	#endif	2156	#endif
1928		2157
		2158	#if EV_CLEANUP_ENABLE
		2159	assert (cleanupmax >= cleanupcnt);
		2160	array_verify (EV_A_ (W *)cleanups, cleanupcnt);
		2161	#endif
		2162
1929	#if EV_ASYNC_ENABLE	2163	#if EV_ASYNC_ENABLE
1930	assert (asyncmax >= asynccnt);	2164	assert (asyncmax >= asynccnt);
1931	array_verify (EV_A_ (W *)asyncs, asynccnt);	2165	array_verify (EV_A_ (W *)asyncs, asynccnt);
1932	#endif	2166	#endif
1933		2167
…		…
1950	#endif	2184	#endif
1951	}	2185	}
1952	#endif	2186	#endif
1953		2187
1954	#if EV_MULTIPLICITY	2188	#if EV_MULTIPLICITY
1955	struct ev_loop *	2189	struct ev_loop * ecb_cold
1956	ev_default_loop_init (unsigned int flags)
1957	#else	2190	#else
1958	int	2191	int
		2192	#endif
1959	ev_default_loop (unsigned int flags)	2193	ev_default_loop (unsigned int flags)
1960	#endif
1961	{	2194	{
1962	if (!ev_default_loop_ptr)	2195	if (!ev_default_loop_ptr)
1963	{	2196	{
1964	#if EV_MULTIPLICITY	2197	#if EV_MULTIPLICITY
1965	EV_P = ev_default_loop_ptr = &default_loop_struct;	2198	EV_P = ev_default_loop_ptr = &default_loop_struct;
…		…
1984		2217
1985	return ev_default_loop_ptr;	2218	return ev_default_loop_ptr;
1986	}	2219	}
1987		2220
1988	void	2221	void
1989	ev_default_destroy (void)	2222	ev_loop_fork (EV_P)
1990	{	2223	{
1991	#if EV_MULTIPLICITY
1992	EV_P = ev_default_loop_ptr;
1993	#endif
1994
1995	ev_default_loop_ptr = 0;
1996
1997	#if EV_CHILD_ENABLE
1998	ev_ref (EV_A); /* child watcher */
1999	ev_signal_stop (EV_A_ &childev);
2000	#endif
2001
2002	loop_destroy (EV_A);
2003	}
2004
2005	void
2006	ev_default_fork (void)
2007	{
2008	#if EV_MULTIPLICITY
2009	EV_P = ev_default_loop_ptr;
2010	#endif
2011
2012	postfork = 1; /* must be in line with ev_loop_fork */	2224	postfork = 1; /* must be in line with ev_default_fork */
2013	}	2225	}
2014		2226
2015	/*****************************************************************************/	2227	/*****************************************************************************/
2016		2228
2017	void	2229	void
…		…
2039		2251
2040	for (pri = NUMPRI; pri--; )	2252	for (pri = NUMPRI; pri--; )
2041	while (pendingcnt [pri])	2253	while (pendingcnt [pri])
2042	{	2254	{
2043	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	2255	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
2044
2045	/assert (("libev: non-pending watcher on pending list", p->w->pending));/
2046	/* ^ this is no longer true, as pending_w could be here */
2047		2256
2048	p->w->pending = 0;	2257	p->w->pending = 0;
2049	EV_CB_INVOKE (p->w, p->events);	2258	EV_CB_INVOKE (p->w, p->events);
2050	EV_FREQUENT_CHECK;	2259	EV_FREQUENT_CHECK;
2051	}	2260	}
…		…
2113	feed_reverse_done (EV_A_ EV_TIMER);	2322	feed_reverse_done (EV_A_ EV_TIMER);
2114	}	2323	}
2115	}	2324	}
2116		2325
2117	#if EV_PERIODIC_ENABLE	2326	#if EV_PERIODIC_ENABLE
		2327
		2328	static void noinline
		2329	periodic_recalc (EV_P_ ev_periodic *w)
		2330	{
		2331	ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
		2332	ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
		2333
		2334	/* the above almost always errs on the low side */
		2335	while (at <= ev_rt_now)
		2336	{
		2337	ev_tstamp nat = at + w->interval;
		2338
		2339	/* when resolution fails us, we use ev_rt_now */
		2340	if (expect_false (nat == at))
		2341	{
		2342	at = ev_rt_now;
		2343	break;
		2344	}
		2345
		2346	at = nat;
		2347	}
		2348
		2349	ev_at (w) = at;
		2350	}
		2351
2118	/* make periodics pending */	2352	/* make periodics pending */
2119	inline_size void	2353	inline_size void
2120	periodics_reify (EV_P)	2354	periodics_reify (EV_P)
2121	{	2355	{
2122	EV_FREQUENT_CHECK;	2356	EV_FREQUENT_CHECK;
…		…
2141	ANHE_at_cache (periodics [HEAP0]);	2375	ANHE_at_cache (periodics [HEAP0]);
2142	downheap (periodics, periodiccnt, HEAP0);	2376	downheap (periodics, periodiccnt, HEAP0);
2143	}	2377	}
2144	else if (w->interval)	2378	else if (w->interval)
2145	{	2379	{
2146	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2380	periodic_recalc (EV_A_ w);
2147	/* if next trigger time is not sufficiently in the future, put it there */
2148	/* this might happen because of floating point inexactness */
2149	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2150	{
2151	ev_at (w) += w->interval;
2152
2153	/* if interval is unreasonably low we might still have a time in the past */
2154	/* so correct this. this will make the periodic very inexact, but the user */
2155	/* has effectively asked to get triggered more often than possible */
2156	if (ev_at (w) < ev_rt_now)
2157	ev_at (w) = ev_rt_now;
2158	}
2159
2160	ANHE_at_cache (periodics [HEAP0]);	2381	ANHE_at_cache (periodics [HEAP0]);
2161	downheap (periodics, periodiccnt, HEAP0);	2382	downheap (periodics, periodiccnt, HEAP0);
2162	}	2383	}
2163	else	2384	else
2164	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	2385	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
…		…
2171	feed_reverse_done (EV_A_ EV_PERIODIC);	2392	feed_reverse_done (EV_A_ EV_PERIODIC);
2172	}	2393	}
2173	}	2394	}
2174		2395
2175	/* simply recalculate all periodics */	2396	/* simply recalculate all periodics */
2176	/* TODO: maybe ensure that at leats one event happens when jumping forward? */	2397	/* TODO: maybe ensure that at least one event happens when jumping forward? */
2177	static void noinline	2398	static void noinline ecb_cold
2178	periodics_reschedule (EV_P)	2399	periodics_reschedule (EV_P)
2179	{	2400	{
2180	int i;	2401	int i;
2181		2402
2182	/* adjust periodics after time jump */	2403	/* adjust periodics after time jump */
…		…
2185	ev_periodic w = (ev_periodic )ANHE_w (periodics [i]);	2406	ev_periodic w = (ev_periodic )ANHE_w (periodics [i]);
2186		2407
2187	if (w->reschedule_cb)	2408	if (w->reschedule_cb)
2188	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2409	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2189	else if (w->interval)	2410	else if (w->interval)
2190	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2411	periodic_recalc (EV_A_ w);
2191		2412
2192	ANHE_at_cache (periodics [i]);	2413	ANHE_at_cache (periodics [i]);
2193	}	2414	}
2194		2415
2195	reheap (periodics, periodiccnt);	2416	reheap (periodics, periodiccnt);
2196	}	2417	}
2197	#endif	2418	#endif
2198		2419
2199	/* adjust all timers by a given offset */	2420	/* adjust all timers by a given offset */
2200	static void noinline	2421	static void noinline ecb_cold
2201	timers_reschedule (EV_P_ ev_tstamp adjust)	2422	timers_reschedule (EV_P_ ev_tstamp adjust)
2202	{	2423	{
2203	int i;	2424	int i;
2204		2425
2205	for (i = 0; i < timercnt; ++i)	2426	for (i = 0; i < timercnt; ++i)
…		…
2242	* doesn't hurt either as we only do this on time-jumps or	2463	* doesn't hurt either as we only do this on time-jumps or
2243	* in the unlikely event of having been preempted here.	2464	* in the unlikely event of having been preempted here.
2244	*/	2465	*/
2245	for (i = 4; --i; )	2466	for (i = 4; --i; )
2246	{	2467	{
		2468	ev_tstamp diff;
2247	rtmn_diff = ev_rt_now - mn_now;	2469	rtmn_diff = ev_rt_now - mn_now;
2248		2470
		2471	diff = odiff - rtmn_diff;
		2472
2249	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))	2473	if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2250	return; /* all is well */	2474	return; /* all is well */
2251		2475
2252	ev_rt_now = ev_time ();	2476	ev_rt_now = ev_time ();
2253	mn_now = get_clock ();	2477	mn_now = get_clock ();
2254	now_floor = mn_now;	2478	now_floor = mn_now;
…		…
2277	mn_now = ev_rt_now;	2501	mn_now = ev_rt_now;
2278	}	2502	}
2279	}	2503	}
2280		2504
2281	void	2505	void
2282	ev_loop (EV_P_ int flags)	2506	ev_run (EV_P_ int flags)
2283	{	2507	{
2284	#if EV_FEATURE_API	2508	#if EV_FEATURE_API
2285	++loop_depth;	2509	++loop_depth;
2286	#endif	2510	#endif
2287		2511
2288	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));	2512	assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2289		2513
2290	loop_done = EVUNLOOP_CANCEL;	2514	loop_done = EVBREAK_CANCEL;
2291		2515
2292	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */	2516	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2293		2517
2294	do	2518	do
2295	{	2519	{
…		…
2338	/* calculate blocking time */	2562	/* calculate blocking time */
2339	{	2563	{
2340	ev_tstamp waittime = 0.;	2564	ev_tstamp waittime = 0.;
2341	ev_tstamp sleeptime = 0.;	2565	ev_tstamp sleeptime = 0.;
2342		2566
		2567	/* remember old timestamp for io_blocktime calculation */
		2568	ev_tstamp prev_mn_now = mn_now;
		2569
		2570	/* update time to cancel out callback processing overhead */
		2571	time_update (EV_A_ 1e100);
		2572
		2573	/* from now on, we want a pipe-wake-up */
		2574	pipe_write_wanted = 1;
		2575
2343	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))	2576	if (expect_true (!(flags & EVRUN_NOWAIT \|\| idleall \|\| !activecnt \|\| pipe_write_skipped)))
2344	{	2577	{
2345	/* remember old timestamp for io_blocktime calculation */
2346	ev_tstamp prev_mn_now = mn_now;
2347
2348	/* update time to cancel out callback processing overhead */
2349	time_update (EV_A_ 1e100);
2350
2351	waittime = MAX_BLOCKTIME;	2578	waittime = MAX_BLOCKTIME;
2352		2579
2353	if (timercnt)	2580	if (timercnt)
2354	{	2581	{
2355	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;	2582	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2356	if (waittime > to) waittime = to;	2583	if (waittime > to) waittime = to;
2357	}	2584	}
2358		2585
2359	#if EV_PERIODIC_ENABLE	2586	#if EV_PERIODIC_ENABLE
2360	if (periodiccnt)	2587	if (periodiccnt)
2361	{	2588	{
2362	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2589	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2363	if (waittime > to) waittime = to;	2590	if (waittime > to) waittime = to;
2364	}	2591	}
2365	#endif	2592	#endif
2366		2593
2367	/* don't let timeouts decrease the waittime below timeout_blocktime */	2594	/* don't let timeouts decrease the waittime below timeout_blocktime */
2368	if (expect_false (waittime < timeout_blocktime))	2595	if (expect_false (waittime < timeout_blocktime))
2369	waittime = timeout_blocktime;	2596	waittime = timeout_blocktime;
		2597
		2598	/* at this point, we NEED to wait, so we have to ensure */
		2599	/* to pass a minimum nonzero value to the backend */
		2600	if (expect_false (waittime < backend_mintime))
		2601	waittime = backend_mintime;
2370		2602
2371	/* extra check because io_blocktime is commonly 0 */	2603	/* extra check because io_blocktime is commonly 0 */
2372	if (expect_false (io_blocktime))	2604	if (expect_false (io_blocktime))
2373	{	2605	{
2374	sleeptime = io_blocktime - (mn_now - prev_mn_now);	2606	sleeptime = io_blocktime - (mn_now - prev_mn_now);
2375		2607
2376	if (sleeptime > waittime - backend_fudge)	2608	if (sleeptime > waittime - backend_mintime)
2377	sleeptime = waittime - backend_fudge;	2609	sleeptime = waittime - backend_mintime;
2378		2610
2379	if (expect_true (sleeptime > 0.))	2611	if (expect_true (sleeptime > 0.))
2380	{	2612	{
2381	ev_sleep (sleeptime);	2613	ev_sleep (sleeptime);
2382	waittime -= sleeptime;	2614	waittime -= sleeptime;
…		…
2385	}	2617	}
2386		2618
2387	#if EV_FEATURE_API	2619	#if EV_FEATURE_API
2388	++loop_count;	2620	++loop_count;
2389	#endif	2621	#endif
2390	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */	2622	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2391	backend_poll (EV_A_ waittime);	2623	backend_poll (EV_A_ waittime);
2392	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */	2624	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
		2625
		2626	pipe_write_wanted = 0;
		2627
		2628	if (pipe_write_skipped)
		2629	{
		2630	assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
		2631	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
		2632	}
		2633
2393		2634
2394	/* update ev_rt_now, do magic */	2635	/* update ev_rt_now, do magic */
2395	time_update (EV_A_ waittime + sleeptime);	2636	time_update (EV_A_ waittime + sleeptime);
2396	}	2637	}
2397		2638
…		…
2415	EV_INVOKE_PENDING;	2656	EV_INVOKE_PENDING;
2416	}	2657	}
2417	while (expect_true (	2658	while (expect_true (
2418	activecnt	2659	activecnt
2419	&& !loop_done	2660	&& !loop_done
2420	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))	2661	&& !(flags & (EVRUN_ONCE \| EVRUN_NOWAIT))
2421	));	2662	));
2422		2663
2423	if (loop_done == EVUNLOOP_ONE)	2664	if (loop_done == EVBREAK_ONE)
2424	loop_done = EVUNLOOP_CANCEL;	2665	loop_done = EVBREAK_CANCEL;
2425		2666
2426	#if EV_FEATURE_API	2667	#if EV_FEATURE_API
2427	--loop_depth;	2668	--loop_depth;
2428	#endif	2669	#endif
2429	}	2670	}
2430		2671
2431	void	2672	void
2432	ev_unloop (EV_P_ int how)	2673	ev_break (EV_P_ int how)
2433	{	2674	{
2434	loop_done = how;	2675	loop_done = how;
2435	}	2676	}
2436		2677
2437	void	2678	void
…		…
2585	EV_FREQUENT_CHECK;	2826	EV_FREQUENT_CHECK;
2586		2827
2587	wlist_del (&anfds[w->fd].head, (WL)w);	2828	wlist_del (&anfds[w->fd].head, (WL)w);
2588	ev_stop (EV_A_ (W)w);	2829	ev_stop (EV_A_ (W)w);
2589		2830
2590	fd_change (EV_A_ w->fd, 1);	2831	fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2591		2832
2592	EV_FREQUENT_CHECK;	2833	EV_FREQUENT_CHECK;
2593	}	2834	}
2594		2835
2595	void noinline	2836	void noinline
…		…
2687	if (w->reschedule_cb)	2928	if (w->reschedule_cb)
2688	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2929	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2689	else if (w->interval)	2930	else if (w->interval)
2690	{	2931	{
2691	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));	2932	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2692	/* this formula differs from the one in periodic_reify because we do not always round up */	2933	periodic_recalc (EV_A_ w);
2693	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2694	}	2934	}
2695	else	2935	else
2696	ev_at (w) = w->offset;	2936	ev_at (w) = w->offset;
2697		2937
2698	EV_FREQUENT_CHECK;	2938	EV_FREQUENT_CHECK;
…		…
2819	sa.sa_handler = ev_sighandler;	3059	sa.sa_handler = ev_sighandler;
2820	sigfillset (&sa.sa_mask);	3060	sigfillset (&sa.sa_mask);
2821	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	3061	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2822	sigaction (w->signum, &sa, 0);	3062	sigaction (w->signum, &sa, 0);
2823		3063
		3064	if (origflags & EVFLAG_NOSIGMASK)
		3065	{
2824	sigemptyset (&sa.sa_mask);	3066	sigemptyset (&sa.sa_mask);
2825	sigaddset (&sa.sa_mask, w->signum);	3067	sigaddset (&sa.sa_mask, w->signum);
2826	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);	3068	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
		3069	}
2827	#endif	3070	#endif
2828	}	3071	}
2829		3072
2830	EV_FREQUENT_CHECK;	3073	EV_FREQUENT_CHECK;
2831	}	3074	}
…		…
2972	if (!pend \|\| pend == path)	3215	if (!pend \|\| pend == path)
2973	break;	3216	break;
2974		3217
2975	*pend = 0;	3218	*pend = 0;
2976	w->wd = inotify_add_watch (fs_fd, path, mask);	3219	w->wd = inotify_add_watch (fs_fd, path, mask);
2977	}	3220	}
2978	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	3221	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
2979	}	3222	}
2980	}	3223	}
2981		3224
2982	if (w->wd >= 0)	3225	if (w->wd >= 0)
…		…
3049	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3292	infy_wd (EV_A_ ev->wd, ev->wd, ev);
3050	ofs += sizeof (struct inotify_event) + ev->len;	3293	ofs += sizeof (struct inotify_event) + ev->len;
3051	}	3294	}
3052	}	3295	}
3053		3296
3054	inline_size unsigned int
3055	ev_linux_version (void)
3056	{
3057	struct utsname buf;
3058	unsigned int v;
3059	int i;
3060	char *p = buf.release;
3061
3062	if (uname (&buf))
3063	return 0;
3064
3065	for (i = 3+1; --i; )
3066	{
3067	unsigned int c = 0;
3068
3069	for (;;)
3070	{
3071	if (p >= '0' && p <= '9')
3072	c = c * 10 + *p++ - '0';
3073	else
3074	{
3075	p += *p == '.';
3076	break;
3077	}
3078	}
3079
3080	v = (v << 8) \| c;
3081	}
3082
3083	return v;
3084	}
3085
3086	inline_size void	3297	inline_size void ecb_cold
3087	ev_check_2625 (EV_P)	3298	ev_check_2625 (EV_P)
3088	{	3299	{
3089	/* kernels < 2.6.25 are borked	3300	/* kernels < 2.6.25 are borked
3090	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	3301	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3091	*/	3302	*/
…		…
3412		3623
3413	#if EV_EMBED_ENABLE	3624	#if EV_EMBED_ENABLE
3414	void noinline	3625	void noinline
3415	ev_embed_sweep (EV_P_ ev_embed *w)	3626	ev_embed_sweep (EV_P_ ev_embed *w)
3416	{	3627	{
3417	ev_loop (w->other, EVLOOP_NONBLOCK);	3628	ev_run (w->other, EVRUN_NOWAIT);
3418	}	3629	}
3419		3630
3420	static void	3631	static void
3421	embed_io_cb (EV_P_ ev_io *io, int revents)	3632	embed_io_cb (EV_P_ ev_io *io, int revents)
3422	{	3633	{
3423	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	3634	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
3424		3635
3425	if (ev_cb (w))	3636	if (ev_cb (w))
3426	ev_feed_event (EV_A_ (W)w, EV_EMBED);	3637	ev_feed_event (EV_A_ (W)w, EV_EMBED);
3427	else	3638	else
3428	ev_loop (w->other, EVLOOP_NONBLOCK);	3639	ev_run (w->other, EVRUN_NOWAIT);
3429	}	3640	}
3430		3641
3431	static void	3642	static void
3432	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3643	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3433	{	3644	{
…		…
3437	EV_P = w->other;	3648	EV_P = w->other;
3438		3649
3439	while (fdchangecnt)	3650	while (fdchangecnt)
3440	{	3651	{
3441	fd_reify (EV_A);	3652	fd_reify (EV_A);
3442	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3653	ev_run (EV_A_ EVRUN_NOWAIT);
3443	}	3654	}
3444	}	3655	}
3445	}	3656	}
3446		3657
3447	static void	3658	static void
…		…
3453		3664
3454	{	3665	{
3455	EV_P = w->other;	3666	EV_P = w->other;
3456		3667
3457	ev_loop_fork (EV_A);	3668	ev_loop_fork (EV_A);
3458	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3669	ev_run (EV_A_ EVRUN_NOWAIT);
3459	}	3670	}
3460		3671
3461	ev_embed_start (EV_A_ w);	3672	ev_embed_start (EV_A_ w);
3462	}	3673	}
3463		3674
…		…
3555		3766
3556	EV_FREQUENT_CHECK;	3767	EV_FREQUENT_CHECK;
3557	}	3768	}
3558	#endif	3769	#endif
3559		3770
		3771	#if EV_CLEANUP_ENABLE
		3772	void
		3773	ev_cleanup_start (EV_P_ ev_cleanup *w)
		3774	{
		3775	if (expect_false (ev_is_active (w)))
		3776	return;
		3777
		3778	EV_FREQUENT_CHECK;
		3779
		3780	ev_start (EV_A_ (W)w, ++cleanupcnt);
		3781	array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
		3782	cleanups [cleanupcnt - 1] = w;
		3783
		3784	/* cleanup watchers should never keep a refcount on the loop */
		3785	ev_unref (EV_A);
		3786	EV_FREQUENT_CHECK;
		3787	}
		3788
		3789	void
		3790	ev_cleanup_stop (EV_P_ ev_cleanup *w)
		3791	{
		3792	clear_pending (EV_A_ (W)w);
		3793	if (expect_false (!ev_is_active (w)))
		3794	return;
		3795
		3796	EV_FREQUENT_CHECK;
		3797	ev_ref (EV_A);
		3798
		3799	{
		3800	int active = ev_active (w);
		3801
		3802	cleanups [active - 1] = cleanups [--cleanupcnt];
		3803	ev_active (cleanups [active - 1]) = active;
		3804	}
		3805
		3806	ev_stop (EV_A_ (W)w);
		3807
		3808	EV_FREQUENT_CHECK;
		3809	}
		3810	#endif
		3811
3560	#if EV_ASYNC_ENABLE	3812	#if EV_ASYNC_ENABLE
3561	void	3813	void
3562	ev_async_start (EV_P_ ev_async *w)	3814	ev_async_start (EV_P_ ev_async *w)
3563	{	3815	{
3564	if (expect_false (ev_is_active (w)))	3816	if (expect_false (ev_is_active (w)))
3565	return;	3817	return;
		3818
		3819	w->sent = 0;
3566		3820
3567	evpipe_init (EV_A);	3821	evpipe_init (EV_A);
3568		3822
3569	EV_FREQUENT_CHECK;	3823	EV_FREQUENT_CHECK;
3570		3824
…		…
3673	}	3927	}
3674		3928
3675	/*****************************************************************************/	3929	/*****************************************************************************/
3676		3930
3677	#if EV_WALK_ENABLE	3931	#if EV_WALK_ENABLE
3678	void	3932	void ecb_cold
3679	ev_walk (EV_P_ int types, void (cb)(EV_P_ int type, void w))	3933	ev_walk (EV_P_ int types, void (cb)(EV_P_ int type, void w))
3680	{	3934	{
3681	int i, j;	3935	int i, j;
3682	ev_watcher_list wl, wn;	3936	ev_watcher_list wl, wn;
3683		3937
…		…
3790		4044
3791	#if EV_MULTIPLICITY	4045	#if EV_MULTIPLICITY
3792	#include "ev_wrap.h"	4046	#include "ev_wrap.h"
3793	#endif	4047	#endif
3794		4048
3795	#ifdef __cplusplus	4049	EV_CPP(})
3796	}
3797	#endif
3798		4050

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Comparing libev/ev.c (file contents): Revision 1.343 by root, Fri Apr 2 21:03:46 2010 UTC vs. Revision 1.379 by root, Sun Jun 19 17:55:13 2011 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.343 by root, Fri Apr 2 21:03:46 2010 UTC vs.
Revision 1.379 by root, Sun Jun 19 17:55:13 2011 UTC