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[linuxjm/jm.git] / manual / LDP_man-pages / release / man2 / mincore.2

.\" Hey Emacs! This file is -*- nroff -*- source.
.\"
.\" Copyright (C) 2001 Bert Hubert <ahu@ds9a.nl>
.\" and Copyright (C) 2007 Michael Kerrisk <mtk.manpages@gmail.com>
.\"
.\" Permission is granted to make and distribute verbatim copies of this
.\" manual provided the copyright notice and this permission notice are
.\" preserved on all copies.
.\"
.\" Permission is granted to copy and distribute modified versions of this
.\" manual under the conditions for verbatim copying, provided that the
.\" entire resulting derived work is distributed under the terms of a
.\" permission notice identical to this one.
.\"
.\" Since the Linux kernel and libraries are constantly changing, this
.\" manual page may be incorrect or out-of-date.  The author(s) assume no
.\" responsibility for errors or omissions, or for damages resulting from
.\" the use of the information contained herein.  The author(s) may not
.\" have taken the same level of care in the production of this manual,
.\" which is licensed free of charge, as they might when working
.\" professionally.
.\"
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
.\"
.\" Created Sun Jun 3 17:23:32 2001 by bert hubert <ahu@ds9a.nl>
.\" Slightly adapted, following comments by Hugh Dickins, aeb, 2001-06-04.
.\" Modified, 20 May 2003, Michael Kerrisk <mtk.manpages@gmail.com>
.\" Modified, 30 Apr 2004, Michael Kerrisk <mtk.manpages@gmail.com>
.\" 2005-04-05 mtk, Fixed error descriptions
.\"     after message from <gordon.jin@intel.com>
.\" 2007-01-08 mtk, rewrote various parts
.\"
.\" Japanese Version Copyright (c) 2001-2005 Yuichi SATO
.\"         all rights reserved.
.\" Translated Sun Jul  8 21:09:35 JST 2001
.\"         by Yuichi SATO <ysato@h4.dion.ne.jp>
.\" Updated & Modified Sat Jul 26 13:54:03 JST 2003
.\"         by Yuichi SATO <ysato444@yahoo.co.jp>
.\" Updated & Modified Fri Dec 31 05:59:40 JST 2004 by Yuichi SATO
.\" Updated & Modified Fri Apr 22 02:35:03 JST 2005 by Yuichi SATO
.\" Updated 2007-05-04, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>, LDP v2.44
.\"
.\"WORD:        least significant bit   ºÇ²¼°Ì¥Ó¥Ã¥È
.\"
.TH MINCORE 2 2008-04-22 "Linux" "Linux Programmer's Manual"
.SH ̾Á°
mincore \- ¥Ú¡¼¥¸¤¬¥á¥â¥êÆâ¤Ë¤¢¤ë¤«¤É¤¦¤«¤òȽÄꤹ¤ë
.SH ½ñ¼°
.B #include <unistd.h>
.br
.B #include <sys/mman.h>
.sp
.BI "int mincore(void *" addr ", size_t " length ", unsigned char *" vec );
.sp
.in -4n
glibc ¸þ¤±¤Îµ¡Ç½¸¡ºº¥Þ¥¯¥í¤ÎÍ×·ï
.RB ( feature_test_macros (7)
»²¾È):
.in
.sp
.BR mincore ():
_BSD_SOURCE || _SVID_SOURCE
.SH ÀâÌÀ
.BR mincore ()
¤Ï¡¢¸Æ¤Ó½Ð¤·¸µ¥×¥í¥»¥¹¤Î²¾ÁÛ¥á¥â¥ê¤Î¥Ú¡¼¥¸¤¬¥³¥¢ (RAM) Æâ¤Ë¸ºß¤·¡¢
¥Ú¡¼¥¸»²¾È»þ¤Ë¥Ç¥£¥¹¥¯¥¢¥¯¥»¥¹ (¥Ú¡¼¥¸¡¦¥Õ¥©¡¼¥ë¥È) ¤òµ¯¤³¤µ¤Ê¤¤¤«
¤É¤¦¤«¤ò¼¨¤¹¥Ù¥¯¥È¥ë¤òÊÖ¤¹¡£¥«¡¼¥Í¥ë¤Ï¡¢¥¢¥É¥ì¥¹
.I addr
¤«¤é»Ï¤Þ¤ë
.I length
¥Ð¥¤¥È¤ÎÈϰϤΥڡ¼¥¸¤Ë´Ø¤¹¤ë¸ºß¾ðÊó¤òÊÖ¤¹¡£

.I addr
°ú¤­¿ô¤Ï¥·¥¹¥Æ¥à¤Î¥Ú¡¼¥¸¥µ¥¤¥º¤ÎÇÜ¿ô¤Ç¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£
.I length
°ú¤­¿ô¤Ï¥Ú¡¼¥¸¥µ¥¤¥º¤ÎÇÜ¿ô¤Ç¤¢¤ëɬÍפϤʤ¤¤¬¡¢
¥Ú¡¼¥¸Á´ÂΤ˴ؤ¹¤ë¸ºß¾ðÊó¤¬ÊÖ¤µ¤ì¤ë¤Î¤Ç¡¢»ö¼Â¾å
.I length
¤Ï¥Ú¡¼¥¸¥µ¥¤¥º¤ÎÇÜ¿ô¤ËÀÚ¤ê¾å¤²¤é¤ì¤ë¤³¤È¤Ë¤Ê¤ë¡£
¥Ú¡¼¥¸¥µ¥¤¥º
.RB ( PAGE_SIZE )
¤Ï
.I sysconf(_SC_PAGESIZE)
¤ò»È¤Ã¤ÆÆþ¼ê¤Ç¤­¤ë¡£

.I vec
°ú¤­¿ô¤Ï¡¢¾¯¤Ê¤¯¤È¤â
.I "(length+PAGE_SIZE\-1) / PAGE_SIZE"
¥Ð¥¤¥È¤¬³ÊǼ¤Ç¤­¤ëÇÛÎó¤ò»Ø¤·¤Æ¤¤¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£
¤³¤Î¸Æ¤Ó½Ð¤·¤¬ÊÖ¤ë¤È¤­¡¢
³Æ¥Ð¥¤¥È¤ÎºÇ²¼°Ì¥Ó¥Ã¥È¤Ï¡¢Âбþ¤¹¤ë¥Ú¡¼¥¸¤¬¥á¥â¥êÆâ¤Ë¤½¤Î¤È¤­Â¸ºß¤¹¤ì¤Ð
¥»¥Ã¥È¤µ¤ì¡¢¤½¤¦¤Ç¤Ê¤¤¾ì¹ç¤Ï¥¯¥ê¥¢¤µ¤ì¤ë
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¤½¤Ê¤¨¤ÆͽÌ󤵤ì¤Æ¤¤¤ë)¡£
¤â¤Á¤í¤ó¡¢
.I vec
¤ÇÊÖ¤µ¤ì¤¿¾ðÊó¤Ï¥¹¥Ê¥Ã¥×¥·¥ç¥Ã¥È¤Ç¤·¤«¤Ê¤¤¡£
¥á¥â¥êÆâ¤Ë¥í¥Ã¥¯¤µ¤ì¤Æ¤¤¤Ê¤¤¥Ú¡¼¥¸¤Ï¡¢Ç¤°Õ¤Î»þÅÀ¤Ç¥á¥â¥êÆâ¤Ë
Æþ¤Ã¤¿¤ê½Ð¤¿¤ê¤Ç¤­¡¢¤³¤Î¸Æ¤Ó½Ð¤·¤¬ÊÖ¤ë¤È¤­¤Ë¤Ï
.I vec
¤ÎÆâÍƤϤ¹¤Ç¤Ë¸Å¤¯¤Ê¤Ã¤Æ¤¤¤ë¤«¤â¤·¤ì¤Ê¤¤¡£
.SH ÊÖ¤êÃÍ
À®¸ù¤·¤¿¾ì¹ç¡¢
.BR mincore ()
¤Ï 0 ¤òÊÖ¤¹¡£
¥¨¥é¡¼¤Î¾ì¹ç¤Ï \-1 ¤òÊÖ¤·¤Æ¡¢
.I errno
¤òŬÀÚ¤ÊÃͤËÀßÄꤹ¤ë¡£
.SH ¥¨¥é¡¼
.B EAGAIN
¥«¡¼¥Í¥ë¤¬°ì»þŪ¤Ë¥ê¥½¡¼¥¹¤ò»È¤¤²Ì¤¿¤·¤Æ¤¤¤ë¡£
.TP
.B EFAULT
.I vec
¤¬Ìµ¸ú¤Ê¥¢¥É¥ì¥¹¤ò»Ø¤·¤Æ¤¤¤ë¡£
.TP
.B EINVAL
.I addr
¤¬¥Ú¡¼¥¸¥µ¥¤¥º¤ÎÇÜ¿ô¤Ç¤Ê¤¤¡£
.TP
.B ENOMEM
.I length
¤¬
.RI ( TASK_SIZE " \- " addr )
¤è¤êÂ礭¤¤¡£
.RI ( length
¤ËÉé¤ÎÃͤ¬»ØÄꤵ¤ì¤¿¾ì¹ç¡¢
¤½¤ÎÃͤ¬Â礭¤ÊÉä¹æ¤Ê¤·À°¿ô¤È¤·¤Æ²ò¼á¤µ¤ì¤ë¤¿¤á¤Ëµ¯¤³¤ë¤³¤È¤¬¤¢¤ë¡£)
Linux 2.6.11 °ÊÁ°¤Ç¤Ï¡¢¤³¤Î¾ò·ï¤Î¾ì¹ç¤Ï¥¨¥é¡¼
.B EINVAL
¤¬ÊÖ¤µ¤ì¤Æ¤¤¤¿¡£
.TP
.B ENOMEM
.I addr
¤«¤é
.I addr
+
.I length
¤Î´Ö¤Ë¥Þ¥Ã¥×¤µ¤ì¤Æ¤¤¤Ê¤¤¥á¥â¥ê¤¬¤¢¤Ã¤¿¡£
.SH ¥Ð¡¼¥¸¥ç¥ó
Linux 2.3.99pre1 ¤È glibc 2.2 ¤«¤éÍøÍѲÄǽ¤Ç¤¢¤ë¡£
.SH ½àµò
.BR mincore ()
¤Ï POSIX.1-2001 ¤Ëµ­½Ò¤µ¤ì¤Æ¤ª¤é¤º¡¢
Á´¤Æ¤Î Unix ¼ÂÁõ¤ÇÍøÍѲÄǽ¤Ç¤¢¤ë¤ï¤±¤Ç¤Ï¤Ê¤¤¡£
.\" It is on at least NetBSD, FreeBSD, OpenBSD, Solaris 8,
.\" AIX 5.1, SunOS 4.1
.\" .SH Îò»Ë
.\" .BR mincore ()
.\" ´Ø¿ô¤Ï 4.4BSD ¤Ç½é¤á¤ÆÅо줷¤¿¡£
.SH ¥Ð¥°
¥«¡¼¥Í¥ë 2.6.21 ¤è¤êÁ°¤Ï¡¢
.BR mincore ()
¤Ï¡¢
.B MAP_PRIVATE
¥Þ¥Ã¥Ô¥ó¥°¤äÈóÀþ·Á¥Þ¥Ã¥Ô¥ó¥°
.RB ( remap_file_pages (2)
¤ò»È¤Ã¤ÆºîÀ®¤µ¤ì¤ë) ¤Ë¤Ä¤¤¤ÆÀµ¤·¤¤¾ðÊó¤òÊÖ¤µ¤Ê¤«¤Ã¤¿¡£
.\" Linux ¤Ç¤Ï (2.6.5 ¤Î¸½ºß¤Ë»ê¤ë¤Þ¤Ç)¡¢
.\" .B mincore
.\" ¤Ï MAP_PRIVATE ¥Þ¥Ã¥Ô¥ó¥°¤Ë¤Ä¤¤¤Æ¤ÎÀµ¤·¤¤¾ðÊó¤òÊÖ¤µ¤Ê¤¤¡£
.\" MAP_PRIVATE ¥Õ¥¡¥¤¥ë¥Þ¥Ã¥Ô¥ó¥°¤Ë¤Ä¤¤¤Æ¡¢
.\" .B mincore
.\" ¤Ï½ñ¤­¹þ¤ß»þ¥³¥Ô¡¼ (copy on write) ¤µ¤ì¤Æ¤¤¤Æ
.\" ½¤Àµ¤µ¤ì¤¿¥×¥í¥»¥¹¤Î¥×¥é¥¤¥Ù¡¼¥È¥Ú¡¼¥¸¤òÊÖ¤¹¤Î¤Ç¤Ï¤Ê¤¯¡¢
.\" ¥Õ¥¡¥¤¥ë¥Ú¡¼¥¸¤¬Â¸ºß¤¹¤ë¤«Èݤ«¤òÊÖ¤¹¡£
.\" .I /dev/zero
.\" ¤Î MAP_PRIVATE ¥Þ¥Ã¥Ô¥ó¥°¤Ë¤Ä¤¤¤Æ¡¢
.\" .B mincore
.\" ¤Ï¾ï¤Ë¥Ú¡¼¥¸¤¬Â¸ºß¤·¤Ê¤¤¤È¤¤¤¦Åú¤¨¤òÊÖ¤¹¡£
.\" MAP_PRIVATE, MAP_ANONYMOUS ¥Þ¥Ã¥Ô¥ó¥°¤Ë¤Ä¤¤¤Æ¡¢
.\" .B mincore
.\" ¤Ï¾ï¤Ë
.\" .B ENOMEM
.\" ¤Ç¼ºÇÔ¤¹¤ë¡£
.SH ´ØÏ¢¹àÌÜ
.BR mlock (2),
.BR mmap (2)