[unix-history] / usr / src / lib / libc / gen / getpagesize.3

.\" Copyright (c) 1983, 1991 The Regents of the University of California.
.\" All rights reserved.
.\"
.\" %sccs.include.redist.man%
.\"
.\"     @(#)getpagesize.3	6.4 (Berkeley) %G%
.\"
.Dd 
.Dt GETPAGESIZE 2
.Os BSD 4.2
.Sh NAME
.Nm getpagesize
.Nd get system page size
.Sh SYNOPSIS
.Fd #include <unistd.h>
.Ft int
.Fn getpagesize void
.Sh DESCRIPTION
.Fn Getpagesize
returns the number of bytes in a page.
Page granularity is the granularity of many of the memory
management calls.
.Pp
The page size is a 
.Xr system
page size and may not be the same as the underlying
hardware page size.
.Sh SEE ALSO
.Xr sbrk 2 ,
.Xr pagesize 1
.Sh HISTORY
The
.Nm
function call appeared in
.Bx 4.2 .
Commit	Line	Data
931b8415	1	.\" Copyright (c) 1983, 1991 The Regents of the University of California.
88b3ccf2	2	.\" All rights reserved.
38ff2b5a	3	.\"
91cff1e1	4	.\" %sccs.include.redist.man%
88b3ccf2	5	.\"
931b8415	6	.\" @(#)getpagesize.3 6.4 (Berkeley) %G%
38ff2b5a	7	.\"
931b8415 CL	8	.Dd
	9	.Dt GETPAGESIZE 2
	10	.Os BSD 4.2
	11	.Sh NAME
	12	.Nm getpagesize
	13	.Nd get system page size
	14	.Sh SYNOPSIS
	15	.Fd #include <unistd.h>
	16	.Ft int
	17	.Fn getpagesize void
	18	.Sh DESCRIPTION
	19	.Fn Getpagesize
38ff2b5a KM	20	returns the number of bytes in a page.
	21	Page granularity is the granularity of many of the memory
	22	management calls.
931b8415	23	.Pp
38ff2b5a	24	The page size is a
931b8415	25	.Xr system
38ff2b5a KM	26	page size and may not be the same as the underlying
38ff2b5a KM	27	hardware page size.
931b8415 CL	28	.Sh SEE ALSO
	29	.Xr sbrk 2 ,
	30	.Xr pagesize 1
	31	.Sh HISTORY
	32	The
	33	.Nm
	34	function call appeared in
	35	.Bx 4.2 .