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/* Copyright (C) 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Bruno Haible <bruno@clisp.org>, 2002.
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 <sys/sysctl.h>
/* Return the system page size. */
int
__getpagesize (void)
{
static int cached_pagesize /* = 0 */;
if (cached_pagesize == 0)
{
/* Fetch sysctl value of "hw.pagesize". */
int request[2] = { CTL_HW, HW_PAGESIZE };
size_t result_len = sizeof (cached_pagesize);
if (__sysctl (request, 2, &cached_pagesize, &result_len, NULL, 0) < 0)
return -1;
}
return cached_pagesize;
}
libc_hidden_def (__getpagesize)
weak_alias (__getpagesize, getpagesize)
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