[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 1.381 by root, Mon Jun 27 21:29:35 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
…		…
1255	ev_io_start (EV_A_ &pipe_w);	1417	ev_io_start (EV_A_ &pipe_w);
1256	ev_unref (EV_A); /* watcher should not keep loop alive */	1418	ev_unref (EV_A); /* watcher should not keep loop alive */
1257	}	1419	}
1258	}	1420	}
1259		1421
1260	inline_size void	1422	inline_speed 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;
		1434
		1435	pipe_write_skipped = 0;
		1436
		1437	old_errno = errno; /* save errno because write will clobber it */
		1438
1270	#if EV_USE_EVENTFD	1439	#if EV_USE_EVENTFD
1271	if (evfd >= 0)	1440	if (evfd >= 0)
1272	{	1441	{
1273	uint64_t counter = 1;	1442	uint64_t counter = 1;
1274	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;
1275	}	1457	}
1276	else
1277	#endif
1278	write (evpipe [1], &dummy, 1);
1279
1280	errno = old_errno;
1281	}	1458	}
1282	}	1459	}
1283		1460
1284	/* called whenever the libev signal pipe */	1461	/* called whenever the libev signal pipe */
1285	/* got some events (signal, async) */	1462	/* got some events (signal, async) */
1286	static void	1463	static void
1287	pipecb (EV_P_ ev_io *iow, int revents)	1464	pipecb (EV_P_ ev_io *iow, int revents)
1288	{	1465	{
1289	int i;	1466	int i;
1290		1467
		1468	if (revents & EV_READ)
		1469	{
1291	#if EV_USE_EVENTFD	1470	#if EV_USE_EVENTFD
1292	if (evfd >= 0)	1471	if (evfd >= 0)
1293	{	1472	{
1294	uint64_t counter;	1473	uint64_t counter;
1295	read (evfd, &counter, sizeof (uint64_t));	1474	read (evfd, &counter, sizeof (uint64_t));
1296	}	1475	}
1297	else	1476	else
1298	#endif	1477	#endif
1299	{	1478	{
1300	char dummy;	1479	char dummy;
		1480	/* see discussion in evpipe_write when you think this read should be recv in win32 */
1301	read (evpipe [0], &dummy, 1);	1481	read (evpipe [0], &dummy, 1);
		1482	}
1302	}	1483	}
1303		1484
		1485	pipe_write_skipped = 0;
		1486
		1487	#if EV_SIGNAL_ENABLE
1304	if (sig_pending)	1488	if (sig_pending)
1305	{	1489	{
1306	sig_pending = 0;	1490	sig_pending = 0;
1307		1491
1308	for (i = EV_NSIG - 1; i--; )	1492	for (i = EV_NSIG - 1; i--; )
1309	if (expect_false (signals [i].pending))	1493	if (expect_false (signals [i].pending))
1310	ev_feed_signal_event (EV_A_ i + 1);	1494	ev_feed_signal_event (EV_A_ i + 1);
1311	}	1495	}
		1496	#endif
1312		1497
1313	#if EV_ASYNC_ENABLE	1498	#if EV_ASYNC_ENABLE
1314	if (async_pending)	1499	if (async_pending)
1315	{	1500	{
1316	async_pending = 0;	1501	async_pending = 0;
…		…
1325	#endif	1510	#endif
1326	}	1511	}
1327		1512
1328	/*****************************************************************************/	1513	/*****************************************************************************/
1329		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	if (!ev_active (&pipe_w))
		1526	return;
		1527
		1528	signals [signum - 1].pending = 1;
		1529	evpipe_write (EV_A_ &sig_pending);
		1530	}
		1531
1330	static void	1532	static void
1331	ev_sighandler (int signum)	1533	ev_sighandler (int signum)
1332	{	1534	{
1333	#if EV_MULTIPLICITY
1334	EV_P = signals [signum - 1].loop;
1335	#endif
1336
1337	#ifdef _WIN32	1535	#ifdef _WIN32
1338	signal (signum, ev_sighandler);	1536	signal (signum, ev_sighandler);
1339	#endif	1537	#endif
1340		1538
1341	signals [signum - 1].pending = 1;	1539	ev_feed_signal (signum);
1342	evpipe_write (EV_A_ &sig_pending);
1343	}	1540	}
1344		1541
1345	void noinline	1542	void noinline
1346	ev_feed_signal_event (EV_P_ int signum)	1543	ev_feed_signal_event (EV_P_ int signum)
1347	{	1544	{
…		…
1447		1644
1448	#endif	1645	#endif
1449		1646
1450	/*****************************************************************************/	1647	/*****************************************************************************/
1451		1648
		1649	#if EV_USE_IOCP
		1650	# include "ev_iocp.c"
		1651	#endif
1452	#if EV_USE_PORT	1652	#if EV_USE_PORT
1453	# include "ev_port.c"	1653	# include "ev_port.c"
1454	#endif	1654	#endif
1455	#if EV_USE_KQUEUE	1655	#if EV_USE_KQUEUE
1456	# include "ev_kqueue.c"	1656	# include "ev_kqueue.c"
…		…
1463	#endif	1663	#endif
1464	#if EV_USE_SELECT	1664	#if EV_USE_SELECT
1465	# include "ev_select.c"	1665	# include "ev_select.c"
1466	#endif	1666	#endif
1467		1667
1468	int	1668	int ecb_cold
1469	ev_version_major (void)	1669	ev_version_major (void)
1470	{	1670	{
1471	return EV_VERSION_MAJOR;	1671	return EV_VERSION_MAJOR;
1472	}	1672	}
1473		1673
1474	int	1674	int ecb_cold
1475	ev_version_minor (void)	1675	ev_version_minor (void)
1476	{	1676	{
1477	return EV_VERSION_MINOR;	1677	return EV_VERSION_MINOR;
1478	}	1678	}
1479		1679
1480	/* return true if we are running with elevated privileges and should ignore env variables */	1680	/* return true if we are running with elevated privileges and should ignore env variables */
1481	int inline_size	1681	int inline_size ecb_cold
1482	enable_secure (void)	1682	enable_secure (void)
1483	{	1683	{
1484	#ifdef _WIN32	1684	#ifdef _WIN32
1485	return 0;	1685	return 0;
1486	#else	1686	#else
1487	return getuid () != geteuid ()	1687	return getuid () != geteuid ()
1488	\|\| getgid () != getegid ();	1688	\|\| getgid () != getegid ();
1489	#endif	1689	#endif
1490	}	1690	}
1491		1691
1492	unsigned int	1692	unsigned int ecb_cold
1493	ev_supported_backends (void)	1693	ev_supported_backends (void)
1494	{	1694	{
1495	unsigned int flags = 0;	1695	unsigned int flags = 0;
1496		1696
1497	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;	1697	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
…		…
1501	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;	1701	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
1502		1702
1503	return flags;	1703	return flags;
1504	}	1704	}
1505		1705
1506	unsigned int	1706	unsigned int ecb_cold
1507	ev_recommended_backends (void)	1707	ev_recommended_backends (void)
1508	{	1708	{
1509	unsigned int flags = ev_supported_backends ();	1709	unsigned int flags = ev_supported_backends ();
1510		1710
1511	#ifndef __NetBSD__	1711	#ifndef __NetBSD__
…		…
1523	#endif	1723	#endif
1524		1724
1525	return flags;	1725	return flags;
1526	}	1726	}
1527		1727
1528	unsigned int	1728	unsigned int ecb_cold
1529	ev_embeddable_backends (void)	1729	ev_embeddable_backends (void)
1530	{	1730	{
1531	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;	1731	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
1532		1732
1533	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */	1733	/* 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 */	1734	if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1535	flags &= ~EVBACKEND_EPOLL;	1735	flags &= ~EVBACKEND_EPOLL;
1536		1736
1537	return flags;	1737	return flags;
1538	}	1738	}
1539		1739
1540	unsigned int	1740	unsigned int
…		…
1578	ev_userdata (EV_P)	1778	ev_userdata (EV_P)
1579	{	1779	{
1580	return userdata;	1780	return userdata;
1581	}	1781	}
1582		1782
		1783	void
1583	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))	1784	ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1584	{	1785	{
1585	invoke_cb = invoke_pending_cb;	1786	invoke_cb = invoke_pending_cb;
1586	}	1787	}
1587		1788
		1789	void
1588	void ev_set_loop_release_cb (EV_P_ void (release)(EV_P), void (acquire)(EV_P))	1790	ev_set_loop_release_cb (EV_P_ void (release)(EV_P), void (acquire)(EV_P))
1589	{	1791	{
1590	release_cb = release;	1792	release_cb = release;
1591	acquire_cb = acquire;	1793	acquire_cb = acquire;
1592	}	1794	}
1593	#endif	1795	#endif
1594		1796
1595	/* initialise a loop structure, must be zero-initialised */	1797	/* initialise a loop structure, must be zero-initialised */
1596	static void noinline	1798	static void noinline ecb_cold
1597	loop_init (EV_P_ unsigned int flags)	1799	loop_init (EV_P_ unsigned int flags)
1598	{	1800	{
1599	if (!backend)	1801	if (!backend)
1600	{	1802	{
		1803	origflags = flags;
		1804
1601	#if EV_USE_REALTIME	1805	#if EV_USE_REALTIME
1602	if (!have_realtime)	1806	if (!have_realtime)
1603	{	1807	{
1604	struct timespec ts;	1808	struct timespec ts;
1605		1809
…		…
1627	if (!(flags & EVFLAG_NOENV)	1831	if (!(flags & EVFLAG_NOENV)
1628	&& !enable_secure ()	1832	&& !enable_secure ()
1629	&& getenv ("LIBEV_FLAGS"))	1833	&& getenv ("LIBEV_FLAGS"))
1630	flags = atoi (getenv ("LIBEV_FLAGS"));	1834	flags = atoi (getenv ("LIBEV_FLAGS"));
1631		1835
1632	ev_rt_now = ev_time ();	1836	ev_rt_now = ev_time ();
1633	mn_now = get_clock ();	1837	mn_now = get_clock ();
1634	now_floor = mn_now;	1838	now_floor = mn_now;
1635	rtmn_diff = ev_rt_now - mn_now;	1839	rtmn_diff = ev_rt_now - mn_now;
1636	#if EV_FEATURE_API	1840	#if EV_FEATURE_API
1637	invoke_cb = ev_invoke_pending;	1841	invoke_cb = ev_invoke_pending;
1638	#endif	1842	#endif
1639		1843
1640	io_blocktime = 0.;	1844	io_blocktime = 0.;
1641	timeout_blocktime = 0.;	1845	timeout_blocktime = 0.;
1642	backend = 0;	1846	backend = 0;
1643	backend_fd = -1;	1847	backend_fd = -1;
1644	sig_pending = 0;	1848	sig_pending = 0;
1645	#if EV_ASYNC_ENABLE	1849	#if EV_ASYNC_ENABLE
1646	async_pending = 0;	1850	async_pending = 0;
1647	#endif	1851	#endif
		1852	pipe_write_skipped = 0;
		1853	pipe_write_wanted = 0;
1648	#if EV_USE_INOTIFY	1854	#if EV_USE_INOTIFY
1649	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;	1855	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1650	#endif	1856	#endif
1651	#if EV_USE_SIGNALFD	1857	#if EV_USE_SIGNALFD
1652	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;	1858	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1653	#endif	1859	#endif
1654		1860
1655	if (!(flags & 0x0000ffffU))	1861	if (!(flags & EVBACKEND_MASK))
1656	flags \|= ev_recommended_backends ();	1862	flags \|= ev_recommended_backends ();
1657		1863
		1864	#if EV_USE_IOCP
		1865	if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
		1866	#endif
1658	#if EV_USE_PORT	1867	#if EV_USE_PORT
1659	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1868	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1660	#endif	1869	#endif
1661	#if EV_USE_KQUEUE	1870	#if EV_USE_KQUEUE
1662	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1871	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
1679	#endif	1888	#endif
1680	}	1889	}
1681	}	1890	}
1682		1891
1683	/* free up a loop structure */	1892	/* free up a loop structure */
1684	static void noinline	1893	void ecb_cold
1685	loop_destroy (EV_P)	1894	ev_loop_destroy (EV_P)
1686	{	1895	{
1687	int i;	1896	int i;
		1897
		1898	#if EV_MULTIPLICITY
		1899	/* mimic free (0) */
		1900	if (!EV_A)
		1901	return;
		1902	#endif
		1903
		1904	#if EV_CLEANUP_ENABLE
		1905	/* queue cleanup watchers (and execute them) */
		1906	if (expect_false (cleanupcnt))
		1907	{
		1908	queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
		1909	EV_INVOKE_PENDING;
		1910	}
		1911	#endif
		1912
		1913	#if EV_CHILD_ENABLE
		1914	if (ev_is_active (&childev))
		1915	{
		1916	ev_ref (EV_A); /* child watcher */
		1917	ev_signal_stop (EV_A_ &childev);
		1918	}
		1919	#endif
1688		1920
1689	if (ev_is_active (&pipe_w))	1921	if (ev_is_active (&pipe_w))
1690	{	1922	{
1691	/ev_ref (EV_A);/	1923	/ev_ref (EV_A);/
1692	/ev_io_stop (EV_A_ &pipe_w);/	1924	/ev_io_stop (EV_A_ &pipe_w);/
…		…
1714	#endif	1946	#endif
1715		1947
1716	if (backend_fd >= 0)	1948	if (backend_fd >= 0)
1717	close (backend_fd);	1949	close (backend_fd);
1718		1950
		1951	#if EV_USE_IOCP
		1952	if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
		1953	#endif
1719	#if EV_USE_PORT	1954	#if EV_USE_PORT
1720	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1955	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1721	#endif	1956	#endif
1722	#if EV_USE_KQUEUE	1957	#if EV_USE_KQUEUE
1723	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);	1958	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
…		…
1750	array_free (periodic, EMPTY);	1985	array_free (periodic, EMPTY);
1751	#endif	1986	#endif
1752	#if EV_FORK_ENABLE	1987	#if EV_FORK_ENABLE
1753	array_free (fork, EMPTY);	1988	array_free (fork, EMPTY);
1754	#endif	1989	#endif
		1990	#if EV_CLEANUP_ENABLE
		1991	array_free (cleanup, EMPTY);
		1992	#endif
1755	array_free (prepare, EMPTY);	1993	array_free (prepare, EMPTY);
1756	array_free (check, EMPTY);	1994	array_free (check, EMPTY);
1757	#if EV_ASYNC_ENABLE	1995	#if EV_ASYNC_ENABLE
1758	array_free (async, EMPTY);	1996	array_free (async, EMPTY);
1759	#endif	1997	#endif
1760		1998
1761	backend = 0;	1999	backend = 0;
		2000
		2001	#if EV_MULTIPLICITY
		2002	if (ev_is_default_loop (EV_A))
		2003	#endif
		2004	ev_default_loop_ptr = 0;
		2005	#if EV_MULTIPLICITY
		2006	else
		2007	ev_free (EV_A);
		2008	#endif
1762	}	2009	}
1763		2010
1764	#if EV_USE_INOTIFY	2011	#if EV_USE_INOTIFY
1765	inline_size void infy_fork (EV_P);	2012	inline_size void infy_fork (EV_P);
1766	#endif	2013	#endif
…		…
1781	infy_fork (EV_A);	2028	infy_fork (EV_A);
1782	#endif	2029	#endif
1783		2030
1784	if (ev_is_active (&pipe_w))	2031	if (ev_is_active (&pipe_w))
1785	{	2032	{
1786	/* this "locks" the handlers against writing to the pipe */	2033	/* 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		2034
1793	ev_ref (EV_A);	2035	ev_ref (EV_A);
1794	ev_io_stop (EV_A_ &pipe_w);	2036	ev_io_stop (EV_A_ &pipe_w);
1795		2037
1796	#if EV_USE_EVENTFD	2038	#if EV_USE_EVENTFD
…		…
1814	postfork = 0;	2056	postfork = 0;
1815	}	2057	}
1816		2058
1817	#if EV_MULTIPLICITY	2059	#if EV_MULTIPLICITY
1818		2060
1819	struct ev_loop *	2061	struct ev_loop * ecb_cold
1820	ev_loop_new (unsigned int flags)	2062	ev_loop_new (unsigned int flags)
1821	{	2063	{
1822	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	2064	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1823		2065
1824	memset (EV_A, 0, sizeof (struct ev_loop));	2066	memset (EV_A, 0, sizeof (struct ev_loop));
1825	loop_init (EV_A_ flags);	2067	loop_init (EV_A_ flags);
1826		2068
1827	if (ev_backend (EV_A))	2069	if (ev_backend (EV_A))
1828	return EV_A;	2070	return EV_A;
1829		2071
		2072	ev_free (EV_A);
1830	return 0;	2073	return 0;
1831	}	2074	}
1832		2075
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 */	2076	#endif /* multiplicity */
1846		2077
1847	#if EV_VERIFY	2078	#if EV_VERIFY
1848	static void noinline	2079	static void noinline ecb_cold
1849	verify_watcher (EV_P_ W w)	2080	verify_watcher (EV_P_ W w)
1850	{	2081	{
1851	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	2082	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1852		2083
1853	if (w->pending)	2084	if (w->pending)
1854	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	2085	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1855	}	2086	}
1856		2087
1857	static void noinline	2088	static void noinline ecb_cold
1858	verify_heap (EV_P_ ANHE *heap, int N)	2089	verify_heap (EV_P_ ANHE *heap, int N)
1859	{	2090	{
1860	int i;	2091	int i;
1861		2092
1862	for (i = HEAP0; i < N + HEAP0; ++i)	2093	for (i = HEAP0; i < N + HEAP0; ++i)
…		…
1867		2098
1868	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	2099	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1869	}	2100	}
1870	}	2101	}
1871		2102
1872	static void noinline	2103	static void noinline ecb_cold
1873	array_verify (EV_P_ W *ws, int cnt)	2104	array_verify (EV_P_ W *ws, int cnt)
1874	{	2105	{
1875	while (cnt--)	2106	while (cnt--)
1876	{	2107	{
1877	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));	2108	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
…		…
1879	}	2110	}
1880	}	2111	}
1881	#endif	2112	#endif
1882		2113
1883	#if EV_FEATURE_API	2114	#if EV_FEATURE_API
1884	void	2115	void ecb_cold
1885	ev_verify (EV_P)	2116	ev_verify (EV_P)
1886	{	2117	{
1887	#if EV_VERIFY	2118	#if EV_VERIFY
1888	int i;	2119	int i;
1889	WL w;	2120	WL w;
…		…
1924	#if EV_FORK_ENABLE	2155	#if EV_FORK_ENABLE
1925	assert (forkmax >= forkcnt);	2156	assert (forkmax >= forkcnt);
1926	array_verify (EV_A_ (W *)forks, forkcnt);	2157	array_verify (EV_A_ (W *)forks, forkcnt);
1927	#endif	2158	#endif
1928		2159
		2160	#if EV_CLEANUP_ENABLE
		2161	assert (cleanupmax >= cleanupcnt);
		2162	array_verify (EV_A_ (W *)cleanups, cleanupcnt);
		2163	#endif
		2164
1929	#if EV_ASYNC_ENABLE	2165	#if EV_ASYNC_ENABLE
1930	assert (asyncmax >= asynccnt);	2166	assert (asyncmax >= asynccnt);
1931	array_verify (EV_A_ (W *)asyncs, asynccnt);	2167	array_verify (EV_A_ (W *)asyncs, asynccnt);
1932	#endif	2168	#endif
1933		2169
…		…
1950	#endif	2186	#endif
1951	}	2187	}
1952	#endif	2188	#endif
1953		2189
1954	#if EV_MULTIPLICITY	2190	#if EV_MULTIPLICITY
1955	struct ev_loop *	2191	struct ev_loop * ecb_cold
1956	ev_default_loop_init (unsigned int flags)
1957	#else	2192	#else
1958	int	2193	int
		2194	#endif
1959	ev_default_loop (unsigned int flags)	2195	ev_default_loop (unsigned int flags)
1960	#endif
1961	{	2196	{
1962	if (!ev_default_loop_ptr)	2197	if (!ev_default_loop_ptr)
1963	{	2198	{
1964	#if EV_MULTIPLICITY	2199	#if EV_MULTIPLICITY
1965	EV_P = ev_default_loop_ptr = &default_loop_struct;	2200	EV_P = ev_default_loop_ptr = &default_loop_struct;
…		…
1984		2219
1985	return ev_default_loop_ptr;	2220	return ev_default_loop_ptr;
1986	}	2221	}
1987		2222
1988	void	2223	void
1989	ev_default_destroy (void)	2224	ev_loop_fork (EV_P)
1990	{	2225	{
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 */	2226	postfork = 1; /* must be in line with ev_default_fork */
2013	}	2227	}
2014		2228
2015	/*****************************************************************************/	2229	/*****************************************************************************/
2016		2230
2017	void	2231	void
…		…
2039		2253
2040	for (pri = NUMPRI; pri--; )	2254	for (pri = NUMPRI; pri--; )
2041	while (pendingcnt [pri])	2255	while (pendingcnt [pri])
2042	{	2256	{
2043	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	2257	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		2258
2048	p->w->pending = 0;	2259	p->w->pending = 0;
2049	EV_CB_INVOKE (p->w, p->events);	2260	EV_CB_INVOKE (p->w, p->events);
2050	EV_FREQUENT_CHECK;	2261	EV_FREQUENT_CHECK;
2051	}	2262	}
…		…
2113	feed_reverse_done (EV_A_ EV_TIMER);	2324	feed_reverse_done (EV_A_ EV_TIMER);
2114	}	2325	}
2115	}	2326	}
2116		2327
2117	#if EV_PERIODIC_ENABLE	2328	#if EV_PERIODIC_ENABLE
		2329
		2330	static void noinline
		2331	periodic_recalc (EV_P_ ev_periodic *w)
		2332	{
		2333	ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
		2334	ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
		2335
		2336	/* the above almost always errs on the low side */
		2337	while (at <= ev_rt_now)
		2338	{
		2339	ev_tstamp nat = at + w->interval;
		2340
		2341	/* when resolution fails us, we use ev_rt_now */
		2342	if (expect_false (nat == at))
		2343	{
		2344	at = ev_rt_now;
		2345	break;
		2346	}
		2347
		2348	at = nat;
		2349	}
		2350
		2351	ev_at (w) = at;
		2352	}
		2353
2118	/* make periodics pending */	2354	/* make periodics pending */
2119	inline_size void	2355	inline_size void
2120	periodics_reify (EV_P)	2356	periodics_reify (EV_P)
2121	{	2357	{
2122	EV_FREQUENT_CHECK;	2358	EV_FREQUENT_CHECK;
…		…
2141	ANHE_at_cache (periodics [HEAP0]);	2377	ANHE_at_cache (periodics [HEAP0]);
2142	downheap (periodics, periodiccnt, HEAP0);	2378	downheap (periodics, periodiccnt, HEAP0);
2143	}	2379	}
2144	else if (w->interval)	2380	else if (w->interval)
2145	{	2381	{
2146	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2382	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]);	2383	ANHE_at_cache (periodics [HEAP0]);
2161	downheap (periodics, periodiccnt, HEAP0);	2384	downheap (periodics, periodiccnt, HEAP0);
2162	}	2385	}
2163	else	2386	else
2164	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	2387	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
…		…
2171	feed_reverse_done (EV_A_ EV_PERIODIC);	2394	feed_reverse_done (EV_A_ EV_PERIODIC);
2172	}	2395	}
2173	}	2396	}
2174		2397
2175	/* simply recalculate all periodics */	2398	/* simply recalculate all periodics */
2176	/* TODO: maybe ensure that at leats one event happens when jumping forward? */	2399	/* TODO: maybe ensure that at least one event happens when jumping forward? */
2177	static void noinline	2400	static void noinline ecb_cold
2178	periodics_reschedule (EV_P)	2401	periodics_reschedule (EV_P)
2179	{	2402	{
2180	int i;	2403	int i;
2181		2404
2182	/* adjust periodics after time jump */	2405	/* adjust periodics after time jump */
…		…
2185	ev_periodic w = (ev_periodic )ANHE_w (periodics [i]);	2408	ev_periodic w = (ev_periodic )ANHE_w (periodics [i]);
2186		2409
2187	if (w->reschedule_cb)	2410	if (w->reschedule_cb)
2188	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2411	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2189	else if (w->interval)	2412	else if (w->interval)
2190	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2413	periodic_recalc (EV_A_ w);
2191		2414
2192	ANHE_at_cache (periodics [i]);	2415	ANHE_at_cache (periodics [i]);
2193	}	2416	}
2194		2417
2195	reheap (periodics, periodiccnt);	2418	reheap (periodics, periodiccnt);
2196	}	2419	}
2197	#endif	2420	#endif
2198		2421
2199	/* adjust all timers by a given offset */	2422	/* adjust all timers by a given offset */
2200	static void noinline	2423	static void noinline ecb_cold
2201	timers_reschedule (EV_P_ ev_tstamp adjust)	2424	timers_reschedule (EV_P_ ev_tstamp adjust)
2202	{	2425	{
2203	int i;	2426	int i;
2204		2427
2205	for (i = 0; i < timercnt; ++i)	2428	for (i = 0; i < timercnt; ++i)
…		…
2242	* doesn't hurt either as we only do this on time-jumps or	2465	* doesn't hurt either as we only do this on time-jumps or
2243	* in the unlikely event of having been preempted here.	2466	* in the unlikely event of having been preempted here.
2244	*/	2467	*/
2245	for (i = 4; --i; )	2468	for (i = 4; --i; )
2246	{	2469	{
		2470	ev_tstamp diff;
2247	rtmn_diff = ev_rt_now - mn_now;	2471	rtmn_diff = ev_rt_now - mn_now;
2248		2472
		2473	diff = odiff - rtmn_diff;
		2474
2249	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))	2475	if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2250	return; /* all is well */	2476	return; /* all is well */
2251		2477
2252	ev_rt_now = ev_time ();	2478	ev_rt_now = ev_time ();
2253	mn_now = get_clock ();	2479	mn_now = get_clock ();
2254	now_floor = mn_now;	2480	now_floor = mn_now;
…		…
2277	mn_now = ev_rt_now;	2503	mn_now = ev_rt_now;
2278	}	2504	}
2279	}	2505	}
2280		2506
2281	void	2507	void
2282	ev_loop (EV_P_ int flags)	2508	ev_run (EV_P_ int flags)
2283	{	2509	{
2284	#if EV_FEATURE_API	2510	#if EV_FEATURE_API
2285	++loop_depth;	2511	++loop_depth;
2286	#endif	2512	#endif
2287		2513
2288	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));	2514	assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2289		2515
2290	loop_done = EVUNLOOP_CANCEL;	2516	loop_done = EVBREAK_CANCEL;
2291		2517
2292	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */	2518	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2293		2519
2294	do	2520	do
2295	{	2521	{
…		…
2338	/* calculate blocking time */	2564	/* calculate blocking time */
2339	{	2565	{
2340	ev_tstamp waittime = 0.;	2566	ev_tstamp waittime = 0.;
2341	ev_tstamp sleeptime = 0.;	2567	ev_tstamp sleeptime = 0.;
2342		2568
		2569	/* remember old timestamp for io_blocktime calculation */
		2570	ev_tstamp prev_mn_now = mn_now;
		2571
		2572	/* update time to cancel out callback processing overhead */
		2573	time_update (EV_A_ 1e100);
		2574
		2575	/* from now on, we want a pipe-wake-up */
		2576	pipe_write_wanted = 1;
		2577
2343	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))	2578	if (expect_true (!(flags & EVRUN_NOWAIT \|\| idleall \|\| !activecnt \|\| pipe_write_skipped)))
2344	{	2579	{
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;	2580	waittime = MAX_BLOCKTIME;
2352		2581
2353	if (timercnt)	2582	if (timercnt)
2354	{	2583	{
2355	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;	2584	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2356	if (waittime > to) waittime = to;	2585	if (waittime > to) waittime = to;
2357	}	2586	}
2358		2587
2359	#if EV_PERIODIC_ENABLE	2588	#if EV_PERIODIC_ENABLE
2360	if (periodiccnt)	2589	if (periodiccnt)
2361	{	2590	{
2362	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2591	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2363	if (waittime > to) waittime = to;	2592	if (waittime > to) waittime = to;
2364	}	2593	}
2365	#endif	2594	#endif
2366		2595
2367	/* don't let timeouts decrease the waittime below timeout_blocktime */	2596	/* don't let timeouts decrease the waittime below timeout_blocktime */
2368	if (expect_false (waittime < timeout_blocktime))	2597	if (expect_false (waittime < timeout_blocktime))
2369	waittime = timeout_blocktime;	2598	waittime = timeout_blocktime;
		2599
		2600	/* at this point, we NEED to wait, so we have to ensure */
		2601	/* to pass a minimum nonzero value to the backend */
		2602	if (expect_false (waittime < backend_mintime))
		2603	waittime = backend_mintime;
2370		2604
2371	/* extra check because io_blocktime is commonly 0 */	2605	/* extra check because io_blocktime is commonly 0 */
2372	if (expect_false (io_blocktime))	2606	if (expect_false (io_blocktime))
2373	{	2607	{
2374	sleeptime = io_blocktime - (mn_now - prev_mn_now);	2608	sleeptime = io_blocktime - (mn_now - prev_mn_now);
2375		2609
2376	if (sleeptime > waittime - backend_fudge)	2610	if (sleeptime > waittime - backend_mintime)
2377	sleeptime = waittime - backend_fudge;	2611	sleeptime = waittime - backend_mintime;
2378		2612
2379	if (expect_true (sleeptime > 0.))	2613	if (expect_true (sleeptime > 0.))
2380	{	2614	{
2381	ev_sleep (sleeptime);	2615	ev_sleep (sleeptime);
2382	waittime -= sleeptime;	2616	waittime -= sleeptime;
…		…
2385	}	2619	}
2386		2620
2387	#if EV_FEATURE_API	2621	#if EV_FEATURE_API
2388	++loop_count;	2622	++loop_count;
2389	#endif	2623	#endif
2390	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */	2624	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2391	backend_poll (EV_A_ waittime);	2625	backend_poll (EV_A_ waittime);
2392	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */	2626	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
		2627
		2628	pipe_write_wanted = 0;
		2629
		2630	if (pipe_write_skipped)
		2631	{
		2632	assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
		2633	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
		2634	}
		2635
2393		2636
2394	/* update ev_rt_now, do magic */	2637	/* update ev_rt_now, do magic */
2395	time_update (EV_A_ waittime + sleeptime);	2638	time_update (EV_A_ waittime + sleeptime);
2396	}	2639	}
2397		2640
…		…
2415	EV_INVOKE_PENDING;	2658	EV_INVOKE_PENDING;
2416	}	2659	}
2417	while (expect_true (	2660	while (expect_true (
2418	activecnt	2661	activecnt
2419	&& !loop_done	2662	&& !loop_done
2420	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))	2663	&& !(flags & (EVRUN_ONCE \| EVRUN_NOWAIT))
2421	));	2664	));
2422		2665
2423	if (loop_done == EVUNLOOP_ONE)	2666	if (loop_done == EVBREAK_ONE)
2424	loop_done = EVUNLOOP_CANCEL;	2667	loop_done = EVBREAK_CANCEL;
2425		2668
2426	#if EV_FEATURE_API	2669	#if EV_FEATURE_API
2427	--loop_depth;	2670	--loop_depth;
2428	#endif	2671	#endif
2429	}	2672	}
2430		2673
2431	void	2674	void
2432	ev_unloop (EV_P_ int how)	2675	ev_break (EV_P_ int how)
2433	{	2676	{
2434	loop_done = how;	2677	loop_done = how;
2435	}	2678	}
2436		2679
2437	void	2680	void
…		…
2585	EV_FREQUENT_CHECK;	2828	EV_FREQUENT_CHECK;
2586		2829
2587	wlist_del (&anfds[w->fd].head, (WL)w);	2830	wlist_del (&anfds[w->fd].head, (WL)w);
2588	ev_stop (EV_A_ (W)w);	2831	ev_stop (EV_A_ (W)w);
2589		2832
2590	fd_change (EV_A_ w->fd, 1);	2833	fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2591		2834
2592	EV_FREQUENT_CHECK;	2835	EV_FREQUENT_CHECK;
2593	}	2836	}
2594		2837
2595	void noinline	2838	void noinline
…		…
2687	if (w->reschedule_cb)	2930	if (w->reschedule_cb)
2688	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2931	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2689	else if (w->interval)	2932	else if (w->interval)
2690	{	2933	{
2691	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));	2934	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 */	2935	periodic_recalc (EV_A_ w);
2693	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2694	}	2936	}
2695	else	2937	else
2696	ev_at (w) = w->offset;	2938	ev_at (w) = w->offset;
2697		2939
2698	EV_FREQUENT_CHECK;	2940	EV_FREQUENT_CHECK;
…		…
2819	sa.sa_handler = ev_sighandler;	3061	sa.sa_handler = ev_sighandler;
2820	sigfillset (&sa.sa_mask);	3062	sigfillset (&sa.sa_mask);
2821	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	3063	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2822	sigaction (w->signum, &sa, 0);	3064	sigaction (w->signum, &sa, 0);
2823		3065
		3066	if (origflags & EVFLAG_NOSIGMASK)
		3067	{
2824	sigemptyset (&sa.sa_mask);	3068	sigemptyset (&sa.sa_mask);
2825	sigaddset (&sa.sa_mask, w->signum);	3069	sigaddset (&sa.sa_mask, w->signum);
2826	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);	3070	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
		3071	}
2827	#endif	3072	#endif
2828	}	3073	}
2829		3074
2830	EV_FREQUENT_CHECK;	3075	EV_FREQUENT_CHECK;
2831	}	3076	}
…		…
2972	if (!pend \|\| pend == path)	3217	if (!pend \|\| pend == path)
2973	break;	3218	break;
2974		3219
2975	*pend = 0;	3220	*pend = 0;
2976	w->wd = inotify_add_watch (fs_fd, path, mask);	3221	w->wd = inotify_add_watch (fs_fd, path, mask);
2977	}	3222	}
2978	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	3223	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
2979	}	3224	}
2980	}	3225	}
2981		3226
2982	if (w->wd >= 0)	3227	if (w->wd >= 0)
…		…
3049	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3294	infy_wd (EV_A_ ev->wd, ev->wd, ev);
3050	ofs += sizeof (struct inotify_event) + ev->len;	3295	ofs += sizeof (struct inotify_event) + ev->len;
3051	}	3296	}
3052	}	3297	}
3053		3298
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	3299	inline_size void ecb_cold
3087	ev_check_2625 (EV_P)	3300	ev_check_2625 (EV_P)
3088	{	3301	{
3089	/* kernels < 2.6.25 are borked	3302	/* kernels < 2.6.25 are borked
3090	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	3303	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3091	*/	3304	*/
…		…
3412		3625
3413	#if EV_EMBED_ENABLE	3626	#if EV_EMBED_ENABLE
3414	void noinline	3627	void noinline
3415	ev_embed_sweep (EV_P_ ev_embed *w)	3628	ev_embed_sweep (EV_P_ ev_embed *w)
3416	{	3629	{
3417	ev_loop (w->other, EVLOOP_NONBLOCK);	3630	ev_run (w->other, EVRUN_NOWAIT);
3418	}	3631	}
3419		3632
3420	static void	3633	static void
3421	embed_io_cb (EV_P_ ev_io *io, int revents)	3634	embed_io_cb (EV_P_ ev_io *io, int revents)
3422	{	3635	{
3423	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	3636	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
3424		3637
3425	if (ev_cb (w))	3638	if (ev_cb (w))
3426	ev_feed_event (EV_A_ (W)w, EV_EMBED);	3639	ev_feed_event (EV_A_ (W)w, EV_EMBED);
3427	else	3640	else
3428	ev_loop (w->other, EVLOOP_NONBLOCK);	3641	ev_run (w->other, EVRUN_NOWAIT);
3429	}	3642	}
3430		3643
3431	static void	3644	static void
3432	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3645	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3433	{	3646	{
…		…
3437	EV_P = w->other;	3650	EV_P = w->other;
3438		3651
3439	while (fdchangecnt)	3652	while (fdchangecnt)
3440	{	3653	{
3441	fd_reify (EV_A);	3654	fd_reify (EV_A);
3442	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3655	ev_run (EV_A_ EVRUN_NOWAIT);
3443	}	3656	}
3444	}	3657	}
3445	}	3658	}
3446		3659
3447	static void	3660	static void
…		…
3453		3666
3454	{	3667	{
3455	EV_P = w->other;	3668	EV_P = w->other;
3456		3669
3457	ev_loop_fork (EV_A);	3670	ev_loop_fork (EV_A);
3458	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3671	ev_run (EV_A_ EVRUN_NOWAIT);
3459	}	3672	}
3460		3673
3461	ev_embed_start (EV_A_ w);	3674	ev_embed_start (EV_A_ w);
3462	}	3675	}
3463		3676
…		…
3555		3768
3556	EV_FREQUENT_CHECK;	3769	EV_FREQUENT_CHECK;
3557	}	3770	}
3558	#endif	3771	#endif
3559		3772
		3773	#if EV_CLEANUP_ENABLE
		3774	void
		3775	ev_cleanup_start (EV_P_ ev_cleanup *w)
		3776	{
		3777	if (expect_false (ev_is_active (w)))
		3778	return;
		3779
		3780	EV_FREQUENT_CHECK;
		3781
		3782	ev_start (EV_A_ (W)w, ++cleanupcnt);
		3783	array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
		3784	cleanups [cleanupcnt - 1] = w;
		3785
		3786	/* cleanup watchers should never keep a refcount on the loop */
		3787	ev_unref (EV_A);
		3788	EV_FREQUENT_CHECK;
		3789	}
		3790
		3791	void
		3792	ev_cleanup_stop (EV_P_ ev_cleanup *w)
		3793	{
		3794	clear_pending (EV_A_ (W)w);
		3795	if (expect_false (!ev_is_active (w)))
		3796	return;
		3797
		3798	EV_FREQUENT_CHECK;
		3799	ev_ref (EV_A);
		3800
		3801	{
		3802	int active = ev_active (w);
		3803
		3804	cleanups [active - 1] = cleanups [--cleanupcnt];
		3805	ev_active (cleanups [active - 1]) = active;
		3806	}
		3807
		3808	ev_stop (EV_A_ (W)w);
		3809
		3810	EV_FREQUENT_CHECK;
		3811	}
		3812	#endif
		3813
3560	#if EV_ASYNC_ENABLE	3814	#if EV_ASYNC_ENABLE
3561	void	3815	void
3562	ev_async_start (EV_P_ ev_async *w)	3816	ev_async_start (EV_P_ ev_async *w)
3563	{	3817	{
3564	if (expect_false (ev_is_active (w)))	3818	if (expect_false (ev_is_active (w)))
3565	return;	3819	return;
		3820
		3821	w->sent = 0;
3566		3822
3567	evpipe_init (EV_A);	3823	evpipe_init (EV_A);
3568		3824
3569	EV_FREQUENT_CHECK;	3825	EV_FREQUENT_CHECK;
3570		3826
…		…
3673	}	3929	}
3674		3930
3675	/*****************************************************************************/	3931	/*****************************************************************************/
3676		3932
3677	#if EV_WALK_ENABLE	3933	#if EV_WALK_ENABLE
3678	void	3934	void ecb_cold
3679	ev_walk (EV_P_ int types, void (cb)(EV_P_ int type, void w))	3935	ev_walk (EV_P_ int types, void (cb)(EV_P_ int type, void w))
3680	{	3936	{
3681	int i, j;	3937	int i, j;
3682	ev_watcher_list wl, wn;	3938	ev_watcher_list wl, wn;
3683		3939
…		…
3790		4046
3791	#if EV_MULTIPLICITY	4047	#if EV_MULTIPLICITY
3792	#include "ev_wrap.h"	4048	#include "ev_wrap.h"
3793	#endif	4049	#endif
3794		4050
3795	#ifdef __cplusplus	4051	EV_CPP(})
3796	}
3797	#endif
3798		4052

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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 1.381 by root, Mon Jun 27 21:29:35 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 1.381 by root, Mon Jun 27 21:29:35 2011 UTC