1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
/* Copyright (C) 1991,1992,1995-1997,2000,2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <unistd.h>
#include <features.h>
#include <sys/param.h>
extern size_t __pagesize;
libc_hidden_proto(__pagesize)
/* Return the system page size. */
/* couldn't make __getpagesize hidden, because shm.h uses it in a macro */
extern __typeof(getpagesize) __getpagesize;
int __getpagesize(void)
{
if (__pagesize != 0)
return __pagesize;
#ifdef EXEC_PAGESIZE
return EXEC_PAGESIZE;
#else /* No EXEC_PAGESIZE. */
#ifdef NBPG
#ifndef CLSIZE
#define CLSIZE 1
#endif /* No CLSIZE. */
return NBPG * CLSIZE;
#else /* No NBPG. */
return NBPC;
#endif /* NBPG. */
#endif /* EXEC_PAGESIZE. */
}
libc_hidden_proto(getpagesize)
strong_alias(__getpagesize,getpagesize)
libc_hidden_def(getpagesize)
|
