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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 Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "prbit.h"
#include "prsystem.h"
#if defined(XP_MAC)
#include "prosdep.h"
#else
#include "md/prosdep.h"
#endif
#ifdef XP_UNIX
#include <unistd.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 RHAPSODY
_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_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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