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.\" Hey Emacs! This file is -*- nroff -*- source.
.\"
.\" Copyright (c) 1996 Tom Bjorkholm <tomb@mydata.se>
.\"
.\" This is free documentation; you can redistribute it and/or
.\" modify it under the terms of the GNU General Public License as
.\" published by the Free Software Foundation; either version 2 of
.\" the License, or (at your option) any later version.
.\"

.\" and "executables" are to be interpreted as the output of any
.\" document formatting or typesetting system, including
.\" intermediate and printed output.
.\"
.\" This manual is distributed in the hope that it will be useful,
.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
.\" GNU General Public License for more details.
.\"
.\" You should have received a copy of the GNU General Public
.\" License along with this manual; if not, write to the Free
.\" Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111,
.\" USA.
.\"
.\" 1996-04-11 Tom Bjorkholm <tomb@mydata.se>
.\"            First version written (1.3.86)
.\" 1996-04-12 Tom Bjorkholm <tomb@mydata.se>
.\"            Update for Linux 1.3.87 and later
.\" 2005-10-11 mtk: Added NOTES for MREMAP_FIXED; revised EINVAL text.
.\"
.\" Japanese Version Copyright (c) 1997 HANATAKA Shinya
.\"         all rights reserved.
.\" Translated 1997-02-23, HANATAKA Shinya <hanataka@abyss.rim.or.jp>
.\" Updated 2002-11-26, Kentaro Shirakata <argrath@ub32.org>
.\" Updated 2005-10-09, Kentaro Shirakata <argrath@ub32.org>
.\" Updated 2006-04-16, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>, LDP v2.28
.\"
.\"WORD:        virtual memory          ²¾ÁÛ¥á¥â¥ê
.\"WORD:        remap                   ºÆ¥Þ¥Ã¥Ô¥ó¥°
.\"WORD:        argument                °ú¤­¿ô
.\"WORD:        address space           ¥¢¥É¥ì¥¹¶õ´Ö
.\"WORD:        page align              ¥Ú¡¼¥¸¶­³¦
.\"WORD:        linear                  ¥ê¥Ë¥¢
.\"WORD:        process                 ¥×¥í¥»¥¹
.\"WORD:        segment                 ¥»¥°¥á¥ó¥È
.\"WORD:        real memory             ¼Â¥á¥â¥ê
.\"WORD:        segmentation violation  ¥»¥°¥á¥ó¥Æ¡¼¥·¥ç¥ó¿¯³²
.\"WORD:        segmentation fault      ¥»¥°¥á¥ó¥Æ¡¼¥·¥ç¥ó°ãÈ¿
.\"WORD:        scheme                  Êý¼°
.\"WORD:        implement               ¼ÂÁõ
.\"WORD:        lock                    ¥í¥Ã¥¯
.\"
.TH MREMAP 2 2005-09-13 "Linux" "Linux Programmer's Manual"
.\"O .SH NAME
.\"O mremap \- remap a virtual memory address
.SH ̾Á°
mremap \- ²¾ÁÛ¥á¥â¥ê¡¦¥¢¥É¥ì¥¹¤òºÆ¥Þ¥Ã¥Ô¥ó¥°¤¹¤ë
.\"O .SH SYNOPSIS
.SH ½ñ¼°
.nf
.B #define _GNU_SOURCE
.br
.B #include <sys/mman.h>
.sp
.BI "void *mremap(void *" old_address ", size_t " old_size ,
.BI "             size_t " new_size ", int " flags );
.fi
.\"O .SH DESCRIPTION
.SH ÀâÌÀ
.\"O .BR mremap ()
.\"O expands (or shrinks) an existing memory mapping, potentially
.\"O moving it at the same time (controlled by the \fIflags\fP argument and
.\"O the available virtual address space).
.BR mremap ()
¤Ï´û¸¤Î¥á¥â¥ê¡¦¥Þ¥Ã¥Ô¥ó¥°¤Î³ÈÄ¥ (¤Þ¤¿¤Ï½Ì¾®) ¤ò¹Ô¤¦¡£
Ʊ»þ¤Ë°ÜÆ°¤µ¤ì¤ë¤³¤È¤â¤¢¤ë
(\fIflags\fP °ú¤­¿ô¤ÈÍøÍѲÄǽ¤Ê²¾ÁÛ¥¢¥É¥ì¥¹¶õ´Ö¤Ë¤è¤Ã¤Æ·è¤Þ¤ë)¡£

.\"O \fIold_address\fP is the old address of the virtual memory block that you
.\"O want to expand (or shrink).
.\"O Note that \fIold_address\fP has to be page
.\"O aligned.
.\"O \fIold_size\fP is the old size of the
.\"O virtual memory block.
.\"O \fInew_size\fP is the requested size of the
.\"O virtual memory block after the resize.
\fIold_address\fP ¤Ï³ÈÄ¥ (¤Þ¤¿¤Ï½Ì¾®) ¤·¤è¤¦¤È¤¹¤ë²¾ÁÛ¥á¥â¥ê¡¦¥Ö¥í¥Ã¥¯
¤Î¸µ¤Î¥¢¥É¥ì¥¹¤Ç¤¢¤ë¡£\fIold_address\fP ¤Ï¥Ú¡¼¥¸¶­³¦¤Ë¹ç¤Ã¤Æ¤¤¤Ê¤±¤ì¤Ð
¤Ê¤é¤Ê¤¤ÅÀ¤ËÃí°Õ¤¹¤ë¤³¤È¡£\fIold_size\fP ¤Ï¸µ¤Î²¾ÁÛ¥á¥â¥ê¡¦¥Ö¥í¥Ã¥¯¤Î
¥µ¥¤¥º¤Ç¤¢¤ë¡£
\fInew_size\fP ¤ÏÍ׵᤹¤ëÊѹ¹¸å¤Î²¾ÁÛ¥á¥â¥ê¡¦¥Ö¥í¥Ã¥¯¤Î¥µ¥¤¥º¤Ç¤¢¤ë¡£

.\"O In Linux the memory is divided into pages.
.\"O A user process has (one or)
.\"O several linear virtual memory segments.
.\"O Each virtual memory segment has one
.\"O or more mappings to real memory pages (in the page table).
.\"O Each virtual memory segment has its own
.\"O protection (access rights), which may cause
.\"O a segmentation violation if the memory is accessed incorrectly (e.g.,
.\"O writing to a read-only segment).
.\"O Accessing virtual memory outside of the
.\"O segments will also cause a segmentation violation.
Linux ¤Ç¤Ï¥á¥â¥ê¤Ï¥Ú¡¼¥¸¤Ëʬ³ä¤µ¤ì¤ë¡£¥æ¡¼¥¶¡¼¡¦¥×¥í¥»¥¹¤Ï (°ì¤Ä¤Þ¤¿¤Ï)
Ê£¿ô¤Î¥ê¥Ë¥¢¤Ê²¾ÁÛ¥á¥â¥ê¥»¥°¥á¥ó¥È¤ò»ý¤Ä¡£
¤½¤ì¤¾¤ì¤Î²¾ÁÛ¥á¥â¥ê¥»¥°¥á¥ó¥È¤Ï°ì¤Ä°Ê¾å¤Î¼Â¥á¥â¥ê¡¦¥Ú¡¼¥¸
¤Ë¥Þ¥Ã¥Ô¥ó¥°¤µ¤ì¤Æ¤¤¤ë (¥Þ¥Ã¥Ô¥ó¥°¾ðÊó¤Ï¥Ú¡¼¥¸¡¦¥Æ¡¼¥Ö¥ë¤Ç´ÉÍý¤µ¤ì¤ë)¡£
²¾ÁÛ¥á¥â¥ê¥»¥°¥á¥ó¥È¤Ë¤Ï¥»¥°¥á¥ó¥ÈËè¤ÎÊݸî (¥¢¥¯¥»¥¹¸¢) ¤¬ÀßÄꤵ¤ì¤Æ¤ª¤ê¡¢
¥á¥â¥ê¤¬ÉÔÀµ¤Ë¥¢¥¯¥»¥¹¤µ¤ì¤¿¾ì¹ç (Î㤨¤ÐÆɤ߹þ¤ßÀìÍѤΥ»¥°¥á¥ó¥È¤Ë
½ñ¤­¹þ¤ó¤À¾ì¹ç)¡¢¥»¥°¥á¥ó¥Æ¡¼¥·¥ç¥ó¿¯³² (segmentation violation) ¤ò
°ú¤­µ¯¤³¤¹¡£¤Þ¤¿¡¢¥»¥°¥á¥ó¥È³°¤Î²¾ÁÛ¥á¥â¥ê¤Ë¥¢¥¯¥»¥¹¤·¤¿¾ì¹ç¤Ë¤â
¥»¥°¥á¥ó¥Æ¡¼¥·¥ç¥ó¿¯³²¤¬È¯À¸¤¹¤ë¡£

.\"O .BR mremap ()
.\"O uses the Linux page table scheme.
.\"O .BR mremap ()
.\"O changes the
.\"O mapping between virtual addresses and memory pages.
.\"O This can be used to implement a very efficient
.\"O .BR realloc (3).
.BR mremap ()
¤Ï Linux ¤Î¥Ú¡¼¥¸¡¦¥Æ¡¼¥Ö¥ëÊý¼°¤ò»ÈÍѤ¹¤ë¡£
.BR mremap ()
¤Ï²¾ÁÛ¥¢¥É¥ì¥¹¤È¥á¥â¥ê¡¦¥Ú¡¼¥¸¤Î¥Þ¥Ã¥Ô¥ó¥°¤òÊѹ¹¤¹¤ë¡£¤³¤ì¤ÏÈó¾ï¤Ë¸úΨŪ¤Ê
.BR realloc (3)
¤ò¼ÂÁõ¤¹¤ë¤Î¤Ë»ÈÍѤµ¤ì¤Æ¤¤¤ë¡£

.\"O The \fIflags\fP bit-mask argument may be 0, or include the following flag:
\fIflags\fP ¥Ó¥Ã¥È¥Þ¥¹¥¯°ú¿ô¤Ï 0 ¤Þ¤¿¤Ï°Ê²¼¤Î¥Õ¥é¥°¤ò´Þ¤à:
.TP
.B MREMAP_MAYMOVE
.\"O By default, if there is not sufficient space to expand a mapping
.\"O at its current location, then
.\"O .BR mremap ()
.\"O fails.
¥Ç¥Õ¥©¥ë¥È¤Ç¤Ï¡¢¸½ºß¤Î°ÌÃ֤˥ޥåԥ󥰤ò³ÈÄ¥¤¹¤ë¤¿¤á¤Î
½½Ê¬¤Ê¶õ¤­¤¬¤Ê¤±¤ì¤Ð
.BR mremap ()
¤Ï¼ºÇÔ¤¹¤ë¡£
.\"O If this flag is specified, then the kernel is permitted to
.\"O relocate the mapping to a new virtual address, if necessary.
¤³¤Î¥Õ¥é¥°¤¬»ØÄꤵ¤ì¤ë¤È¡¢¥«¡¼¥Í¥ë¤ÏɬÍפ¬¤¢¤ì¤Ð¥Þ¥Ã¥Ô¥ó¥°¤ò
¿·¤·¤¤²¾ÁÛ¥¢¥É¥ì¥¹¤ËºÆÇÛÃÖ¤¹¤ë¤³¤È¤¬¤Ç¤­¤ë
.\"O If the mapping is relocated,
.\"O then absolute pointers into the old mapping location
.\"O become invalid (offsets relative to the starting address of
.\"O the mapping should be employed).
¥Þ¥Ã¥Ô¥ó¥°¤¬ºÆÇÛÃÖ¤µ¤ì¤ë¤È¡¢¸Å¤¤¥Þ¥Ã¥Ô¥ó¥°°ÌÃ֤ؤÎÀäÂХݥ¤¥ó¥¿¤Ï
̵¸ú¤Ë¤Ê¤ë (¥Þ¥Ã¥Ô¥ó¥°¤Î³«»Ï¥¢¥É¥ì¥¹¤«¤é¤ÎÁêÂÐ¥ª¥Õ¥»¥Ã¥È¤ÏÍ­¸ú¤Î¤Þ¤Þ¤Ç¤¢¤ë)¡£
.TP
.\"O .BR MREMAP_FIXED " (since Linux 2.3.31)"
.BR MREMAP_FIXED " (Linux 2.3.31 °Ê¹ß)"
.\"O This flag serves a similar purpose to the
.\"O .B MAP_FIXED
.\"O flag of
.\"O .BR mmap (2).
¤³¤Î¥Õ¥é¥°¤Ï
.BR mmap (2)
¤Î
.B MAP_FIXED
¥Õ¥é¥°¤È»÷¤¿¤è¤¦¤ÊÌÜŪ¤ÇÍѤ¤¤é¤ì¤ë¡£
.\"O If this flag is specified, then
.\"O .BR mremap ()
.\"O accepts a fifth argument,
.\"O .IR "void *new_address" ,
.\"O which specifies a page-aligned address to which the mapping must
.\"O be moved.
¤³¤Î¥Õ¥é¥°¤¬»ØÄꤵ¤ì¤ë¤È¡¢
.BR mremap ()
¤Ï 5 ÈÖÌܤΰú¤­¿ô
.I "void *new_address"
¤ò¼õ¤±¼è¤ê¡¢¤³¤Î°ú¿ô¤Ï¥Þ¥Ã¥Ô¥ó¥°¤¬°ÜÆ°¤µ¤ì¤ë¤Ù¤­¥¢¥É¥ì¥¹¤ò»ØÄꤹ¤ë¡£
¤³¤Î¥¢¥É¥ì¥¹¤Ï¥Ú¡¼¥¸¶­³¦¤Ë¹ç¤Ã¤Æ¤¤¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£
.\"O Any previous mapping at the address range specified by
.\"O .I new_address
.\"O and
.\"O .I new_size
.\"O is unmapped.
.I new_address
¤È
.I new_size
¤Ç»ØÄꤵ¤ì¤ë¥¢¥É¥ì¥¹ÈϰϤ˲áµî¤Î¥Þ¥Ã¥Ô¥ó¥°¤¬¤¢¤Ã¤¿¾ì¹ç¡¢
¤½¤Î¥Þ¥Ã¥Ô¥ó¥°¤Ï¥¢¥ó¥Þ¥Ã¥×¤µ¤ì¤ë (unmapped)¡£
.\"O If
.\"O .B MREMAP_FIXED
.\"O is specified, then
.\"O .B MREMAP_MAYMOVE
.\"O must also be specified.
.B MREMAP_FIXED
¤ò»ØÄꤷ¤¿¾ì¹ç¤Ï¡¢
.B MREMAP_MAYMOVE
¤â»ØÄꤷ¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£
.PP
.\"O If the memory segment specified by
.\"O .I old_address
.\"O and
.\"O .I old_size
.\"O is locked (using
.\"O .BR mlock (2)
.\"O or similar), then this lock is maintained when the segment is
.\"O resized and/or relocated.
.\"O As a consequence, the amount of memory locked by the process may change.
.I old_address
¤È
.I old_size
¤Ç»ØÄꤵ¤ì¤ë¥á¥â¥ê¥»¥°¥á¥ó¥È¤¬
.RB ( mlock (2)
¤äƱÍͤΤâ¤Î¤Ç) ¥í¥Ã¥¯¤µ¤ì¤Æ¤¤¤ë¾ì¹ç¡¢¥»¥°¥á¥ó¥È¤Î¥µ¥¤¥º¤¬ÊѤï¤Ã¤¿¤ê
ºÆÇÛÃÖ¤µ¤ì¤¿¤ê¤·¤¿»þ¤Ë¥í¥Ã¥¯¤â°Ý»ý¤µ¤ì¤ë¡£
¤½¤Î·ë²Ì¡¢¥×¥í¥»¥¹¤Ë¤è¤Ã¤Æ¥í¥Ã¥¯¤µ¤ì¤ë¥á¥â¥ê¤ÎÎ̤ÏÊѲ½¤¹¤ë¡£
.\"O .SH "RETURN VALUE"
.SH ÊÖ¤êÃÍ
.\"O On On success
.\"O .BR mremap ()
.\"O returns a pointer to the new virtual memory area.
.\"O On error, the value
.\"O .B MAP_FAILED
.\"O (that is, \fI(void\ *)\ \-1\fP) is returned,
.\"O and \fIerrno\fP is set appropriately.
À®¸ù¤·¤¿¾ì¹ç¤Ï
.BR mremap ()
¤Ï¿·¤·¤¤²¾ÁÛ¥á¥â¥êÎΰè¤Ø¤Î¥Ý¥¤¥ó¥¿¤òÊÖ¤¹¡£
¥¨¥é¡¼¤Î¾ì¹ç¤Ï
.B MAP_FAILED
(¤¹¤Ê¤ï¤Á \fI(void\ *)\ \-1\fP) ¤¬ÊÖ¤µ¤ì¡¢
\fIerrno\fP ¤¬Å¬ÀÚ¤ËÀßÄꤵ¤ì¤ë¡£
.\"O .SH ERRORS
.SH ¥¨¥é¡¼
.TP
.B EAGAIN
.\"O The caller tried to expand a memory segment that is locked,
.\"O but this was not possible without exceeding the
.\"O .B RLIMIT_MEMLOCK
.\"O resource limit.
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.B RLIMIT_MEMLOCK
¥ê¥½¡¼¥¹À©¸Â¤ò±Û¤¨¤º¤Ë¤³¤ì¤ò¹Ô¤¦¤³¤È¤¬¤Ç¤­¤Ê¤¤¡£
.TP
.B EFAULT
.\"O "Segmentation fault." Some address in the range
.\"O \fIold_address\fP to \fIold_address\fP+\fIold_size\fP is an invalid
.\"O virtual memory address for this process.
.\"O You can also get
.\"O .B EFAULT
.\"O even if there exist mappings that cover the
.\"O whole address space requested, but those mappings are of different types.
¡Ö¥»¥°¥á¥ó¥Æ¡¼¥·¥ç¥ó°ãÈ¿(segmentation fault)¡×
\fIold_address\fP ¤«¤é \fIold_address\fP+\fIold_size\fP ¤Î
ÈϰϤΥ¢¥É¥ì¥¹¤Î¤É¤ì¤«¤¬¤³¤Î¥×¥í¥»¥¹¤Ë¤ª¤¤¤ÆÉÔÀµ¤Ê²¾ÁÛ¥á¥â¥ê¡¦¥¢¥É¥ì¥¹¤Ç¤¢¤ë¡£
¤¿¤È¤¨Í׵ᤷ¤¿¥¢¥É¥ì¥¹¶õ´ÖÁ´ÂΤò´Þ¤à¤è¤¦¤Ê¥Þ¥Ã¥Ô¥ó¥°¤¬¤¢¤Ã¤¿¤È¤·¤Æ¤â¡¢
¤½¤ì¤é¤Î¥Þ¥Ã¥Ô¥ó¥°¤¬°Û¤Ê¤Ã¤¿·¿¤Ê¤é¤Ð
.B EFAULT
¤ò¼õ¤±¼è¤ë¤À¤í¤¦¡£
.TP
.B EINVAL
.\"O An invalid argument was given.
ÉÔÀµ¤Ê°ú¤­¿ô¤¬Í¿¤¨¤é¤ì¤¿¡£
.\"O Possible causes are: \fIold_address\fP was not
.\"O page aligned; a value other than
.\"O .B MREMAP_MAYMOVE
.\"O or
.\"O .B MREMAP_FIXED
.\"O was specified in
.\"O .IR flags ;
.\"O .I new_size
.\"O was zero;
.\"O .I new_size
.\"O or
.\"O .I new_address
.\"O was invalid;
.\"O or the new address range specified by
.\"O .I new_address
.\"O and
.\"O .I new_size
.\"O overlapped the old address range specified by
.\"O .I old_address
.\"O and
.\"O .IR old_size ;
.\"O or
.\"O .B MREMAP_FIXED
.\"O was specified without also specifying
.\"O .BR MREMAP_MAYMOVE .
²ÄǽÀ­¤Î¤¢¤ë¸¶°ø¤Ï°Ê²¼¤ÎÄ̤ê¤Ç¤¢¤ë:
¤¿¤¤¤Æ¤¤¤Ï \fIold_address\fP ¤¬¥Ú¡¼¥¸¶­³¦¤Ë
¹ç¤Ã¤Æ¤Ê¤¤;
.I flags
¤Ë
.B MREMAP_MAYMOVE
¤Þ¤¿¤Ï
.B MREMAP_FIXED
°Ê³°¤ÎÃͤ¬»ØÄꤵ¤ì¤Æ¤¤¤ë;
.I new_size
¤¬¥¼¥í;
.I new_size
¤Þ¤¿¤Ï
.I new_address
¤ÎÃͤ¬ÉÔÀµ;
.I new_address
¤È
.I new_size
¤Ç»ØÄꤵ¤ì¤ë¿·¤·¤¤¥¢¥É¥ì¥¹ÈϰϤ¬
.I old_address
¤È
.I old_size
¤Ç»ØÄꤵ¤ì¤ë¸Å¤¤¥¢¥É¥ì¥¹ÈϰϤȽŤʤäƤ¤¤ë;
.B MREMAP_FIXED
¤¬»ØÄꤵ¤ì¤Æ¤¤¤ë¤¬
.B MREMAP_MAYMOVE
¤¬»ØÄꤵ¤ì¤Æ¤¤¤Ê¤¤¡£
.TP
.B ENOMEM
.\"O The memory area cannot be expanded at the current virtual address, and the
.\"O .B MREMAP_MAYMOVE
.\"O flag is not set in \fIflags\fP.
.\"O Or, there is not enough (virtual) memory available.
¸½ºß¤Î²¾ÁÛ¥¢¥É¥ì¥¹¤Ç¤Ï¥á¥â¥êÎΰ褬³ÈÄ¥¤Ç¤­¤º¡¢
.B MREMAP_MAYMOVE
¥Õ¥é¥°¤¬ \fIflags\fP ¤ËÀßÄꤵ¤ì¤Æ¤¤¤Ê¤¤¡£
¤Þ¤¿¤Ï½½Ê¬¤Ê (²¾ÁÛ) ¥á¥â¥ê¤¬Â¸ºß¤·¤Ê¤¤¡£
.\"O .SH "CONFORMING TO"
.SH ½àµò
.\"O This call is Linux-specific, and should not be used in programs
.\"O intended to be portable.
.\"O .\" 4.2BSD had a (never actually implemented)
.\"O .\" .BR mremap (2)
.\"O .\" call with completely different semantics.
¤³¤Î¥³¡¼¥ë¤Ï Linux ÆÃÍ­¤Ç¤¢¤ê¡¢°Ü¿¢¤ò°Õ¿Þ¤·¤¿¥×¥í¥°¥é¥à¤Ç
»ÈÍѤ¹¤Ù¤­¤Ç¤Ï¤Ê¤¤¡£
.\" 4.2BSD ¤Ë¤Ï (¼ÂºÝ¤Ë¼ÂÁõ¤µ¤ì¤Æ¤¤¤¿¤ï¤±¤Ç¤Ï¤Ê¤¤¤¬)
.\" Á´¤¯°Û¤Ã¤¿Êý¼° (semantics) ¤Ë¤è¤ë
.\" .BR mremap (2)
.\" ¥³¡¼¥ë¤¬¤¢¤Ã¤¿¡£
.\" FIXME perhaps remove above statement about 4.2BSD.
.\"O .SH NOTES
.SH Ãí°Õ
.\"O Prior to version 2.4, glibc did not expose the definition of
.\"O .BR MREMAP_FIXED ,
.\"O and the prototype for
.\"O .BR mremap ()
.\"O did not allow for the
.\"O .I new_address
.\"O argument.
¥Ð¡¼¥¸¥ç¥ó 2.4 ¤è¤êÁ°¤Î glibc ¤Ç¤Ï¡¢
.B MREMAP_FIXED
¤ÎÄêµÁ¤Ï¸ø³«¤µ¤ì¤Æ¤ª¤é¤º¡¢
.BR mremap ()
¤Î¥×¥í¥È¥¿¥¤¥×¤Ï
.I new_address
°ú¤­¿ô¤ò¼è¤é¤Ê¤«¤Ã¤¿¡£
.\"O .SH "SEE ALSO"
.SH ´ØÏ¢¹àÌÜ
.BR brk (2),
.BR getpagesize (2),
.BR getrlimit (2),
.BR mlock (2),
.BR mmap (2),
.BR sbrk (2),
.BR realloc (3),
.BR malloc (3),
.BR feature_test_macros (7)
.P
.\"O Your favorite OS text book for more information on paged memory.
.\"O (\fIModern Operating Systems\fP by Andrew S. Tannenbaum,
.\"O \fIInside Linux\fP by Randolf Bentson,
.\"O \fIThe Design of the UNIX Operating System\fP by Maurice J. Bach.)
¥Ú¡¼¥¸Ê¬³ä¤µ¤ì¤¿¥á¥â¥ê¤Ë¤Ä¤¤¤Æ¤â¤Ã¤È¾Ü¤·¤¯ÃΤꤿ¤¤¤Ê¤é¤Ð
¤¢¤Ê¤¿¤Î¹¥¤ß¤Î OS ¤Î¶µ²Ê½ñ¤ò»²¾È¤¹¤ë¤³¤È¡£
(\fIModern Operating Systems\fP by Andrew S. Tannenbaum,
\fIInside Linux\fP by Randolf Bentson,
\fIThe Design of the UNIX Operating System\fP by Maurice J. Bach.)