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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Mozilla Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is the Netscape Portable Runtime (NSPR).
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998-2000 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU General Public License Version 2 or later (the
* "GPL"), in which case the provisions of the GPL are applicable
* instead of those above. If you wish to allow use of your
* version of this file only under the terms of the GPL and not to
* allow others to use your version of this file under the MPL,
* indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by
* the GPL. If you do not delete the provisions above, a recipient
* may use your version of this file under either the MPL or the
* GPL.
*/
#include "prbit.h"
#include "prsystem.h"
#ifdef XP_UNIX
#include <unistd.h>
#endif
#ifdef SUNOS4
#include "md/sunos4.h"
#endif
#ifdef _WIN32
#include <windows.h>
#endif
#ifdef XP_BEOS
#include <OS.h>
#endif
PRInt32 _pr_pageShift;
PRInt32 _pr_pageSize;
/*
** Get system page size
*/
static void GetPageSize(void)
{
PRInt32 pageSize;
/* Get page size */
#ifdef XP_UNIX
#if defined SUNOS4 || defined LINUX || defined BSDI || defined AIX \
|| defined FREEBSD || defined NETBSD || defined OPENBSD \
|| defined RHAPSODY || defined NEXTSTEP
_pr_pageSize = getpagesize();
#elif defined(HPUX)
/* I have no idea. Don't get me started. --Rob */
_pr_pageSize = sysconf(_SC_PAGE_SIZE);
#else
_pr_pageSize = sysconf(_SC_PAGESIZE);
#endif
#endif /* XP_UNIX */
#ifdef XP_MAC
_pr_pageSize = 4096;
#endif /* XP_MAC */
#ifdef XP_BEOS
_pr_pageSize = B_PAGE_SIZE;
#endif
#ifdef XP_PC
#ifdef _WIN32
SYSTEM_INFO info;
GetSystemInfo(&info);
_pr_pageSize = info.dwPageSize;
#else
_pr_pageSize = 4096;
#endif
#endif /* XP_PC */
pageSize = _pr_pageSize;
PR_CEILING_LOG2(_pr_pageShift, pageSize);
}
PR_IMPLEMENT(PRInt32) PR_GetPageShift(void)
{
if (!_pr_pageSize) {
GetPageSize();
}
return _pr_pageShift;
}
PR_IMPLEMENT(PRInt32) PR_GetPageSize(void)
{
if (!_pr_pageSize) {
GetPageSize();
}
return _pr_pageSize;
}
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