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diff --git a/mozilla/nsprpub/pr/src/md/prosdep.c b/mozilla/nsprpub/pr/src/md/prosdep.c
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * 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 the Initial Developer are Copyright (C) 1998-2000
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#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 BSDI || defined AIX \
+ || defined LINUX || defined __GNU__ || defined __GLIBC__ \
+ || defined FREEBSD || defined NETBSD || defined OPENBSD \
+ || defined DARWIN || defined NEXTSTEP || defined SYMBIAN
+ _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_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;
+}