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1 | .\" Copyright (c) 1983, 1991, 1993 | |
2 | .\" The Regents of the University of California. All rights reserved. | |
3 | .\" | |
4 | .\" Redistribution and use in source and binary forms, with or without | |
5 | .\" modification, are permitted provided that the following conditions | |
6 | .\" are met: | |
7 | .\" 1. Redistributions of source code must retain the above copyright | |
8 | .\" notice, this list of conditions and the following disclaimer. | |
9 | .\" 2. Redistributions in binary form must reproduce the above copyright | |
10 | .\" notice, this list of conditions and the following disclaimer in the | |
11 | .\" documentation and/or other materials provided with the distribution. | |
12 | .\" 3. All advertising materials mentioning features or use of this software | |
13 | .\" must display the following acknowledgement: | |
14 | .\" This product includes software developed by the University of | |
15 | .\" California, Berkeley and its contributors. | |
16 | .\" 4. Neither the name of the University nor the names of its contributors | |
17 | .\" may be used to endorse or promote products derived from this software | |
18 | .\" without specific prior written permission. | |
19 | .\" | |
20 | .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
21 | .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
22 | .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
23 | .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
24 | .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
25 | .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
26 | .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
27 | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
28 | .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
29 | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
30 | .\" SUCH DAMAGE. | |
31 | .\" | |
32 | .\" @(#)getpagesize.3 8.1 (Berkeley) 6/4/93 | |
33 | .\" $FreeBSD: src/lib/libc/gen/getpagesize.3,v 1.11 2002/12/27 12:15:28 schweikh Exp $ | |
34 | .\" | |
35 | .Dd June 4, 1993 | |
36 | .Dt GETPAGESIZE 3 | |
37 | .Os | |
38 | .Sh NAME | |
39 | .Nm getpagesize | |
40 | .Nd get system page size | |
41 | .Sh LIBRARY | |
42 | .Lb libc | |
43 | .Sh SYNOPSIS | |
44 | .In unistd.h | |
45 | .Ft int | |
46 | .Fn getpagesize void | |
47 | .Sh DESCRIPTION | |
48 | The | |
49 | .Fn getpagesize | |
50 | function | |
51 | returns the number of bytes in a page. | |
52 | Page granularity is the granularity of many of the memory | |
53 | management calls. | |
54 | .Pp | |
55 | The page size is a system | |
56 | page size and may not be the same as the underlying | |
57 | hardware page size. | |
58 | .Sh SEE ALSO | |
59 | .Xr pagesize 1 , | |
60 | .Xr sbrk 2 | |
61 | .Sh HISTORY | |
62 | The | |
63 | .Fn getpagesize | |
64 | function appeared in | |
65 | .Bx 4.2 . |