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.\" Copyright (C) 2001 Andries Brouwer <aeb@cwi.nl>
.\"
.\" 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.\" manual page may be incorrect or out-of-date.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.
.\"
.\" Japanese Version Copyright (c) 1997 HANATAKA Shinya
.\" all rights reserved.
.\" Translated 2002-04-14, HANATAKA Shinya <hanataka@abyss.rim.or.jp>
.\" Updated 2003-07-03, Akihiro Motoki <amotoki@dd.iij4u.or.jp>
.\" Updated 2007-01-07, Akihiro MOTOKI, catch up to LDP v2.43
.\"
.\"WORD: page ڡ
.\"WORD: legacy ΰʪ
.\"
.TH GETPAGESIZE 2 2007-07-26 "Linux" "Linux Programmer's Manual"
.SH ̾
getpagesize \- Υڡ
.SH
.B #include <unistd.h>
.sp
.B int getpagesize(void);
.sp
.in -4n
glibc εǽޥ
.RB ( feature_test_macros (7)
):
.in
.sp
.BR getpagesize ():
_BSD_SOURCE || _XOPEN_SOURCE\ >=\ 500
.SH
.BR getpagesize ()
ؿϥڡ礭Хȿ֤ǤΡ֥ڡפ
.BR mmap (2)
ǻѤƤΤǡ
.BR mmap ()
ϤΥڡñ̤ǥեޥåפ롣
.BR mmap (2)
ѤڡϰʲΤ褦ˤΤ뤳ȤǤ롣
.in +4n
.nf
#include <unistd.h>
long sz = sysconf(_SC_PAGESIZE);
.fi
.in
(ۤȤɤΥƥǤ
.B _SC_PAGESIZE
ƱȤ
.B _SC_PAGE_SIZE
Ѥ뤳ȤǤ)⤷ϰʲΤ褦ˤ:
.in +4n
.nf
#include <unistd.h>
int sz = getpagesize();
.fi
.in
.\" .SH
.\" Υƥॳ 4.2BSD ǽо줷
.SH
SVr4, 4.4BSD, SUSv2.
SUSv2 Ǥ
.BR getpagesize ()
ƥॳϡֲΰʪ (LEGACY)פȤƤꡢ
POSIX.1-2001 ϳƤ롣
HP-UX ˤϤΥƥॳ¸ߤʤ
ܿɬפʥץꥱǤϡΥƥॳ
.I sysconf(_SC_PAGESIZE)
Ѥ٤Ǥ롣
.SH
.BR getpagesize ()
Linux ΥƥॳȤ¸ߤ뤫ɤϡΥƥ
¸Ƥ롣
ƥॳȤ¸ߤˤϡͥ륷ܥ
.B PAGE_SIZE
֤
.B PAGE_SIZE
ͤϡƥȥޥǥ˰¸롣
̤ˡХʥϡƥ㤴Ȥ1ĤΥХʥۤǺѤޤ뤿ˡ
ƥˤϰ¸Ƥ뤬ޥǥˤϰ¸Ƥʤ
Ĥޤꡢ桼ץϥѥ˥إåե뤫
.B PAGE_SIZE
ĤƻѤ٤ǤϤʤ
ʤȤ⡢ޥǥˤĤƤ¸¸ߤ (sun4 Τ褦)
ƥˤƤʪΥƥॳѤɬפ롣
libc4, libc5, glibc 2.0 Ǥϡ
.BR getpagesize ()
ƥࡦѤ֤ͤˡˡ
Ԥ롣glibc 2.1 ǤפǤ롣
.SH Ϣ
.BR mmap (2),
.BR sysconf (3)
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