6912521: System.arraycopy works slower than the simple loop for little lengths
Summary: convert small array copies to series of loads and stores
Reviewed-by: kvn, vlivanov
/*
* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* Generate HTML documentation for shell tool. Re-run this tool to regenerate
* html doc when you change options.
*
* Usage:
*
* jjs -scripting genshelldoc.js > shell.html
*/
var Options = Packages.jdk.nashorn.internal.runtime.options.Options;
var title = "Nashorn command line shell tool";
print(<<PREFIX
<html>
<head>
<title>
${title}
</title>
</head>
<body>
<h1>Usage</h1>
<p>
<code>
<b>jjs <options> <script-files> [ -- <script-arguments> ]</b>
</code>
</p>
<h1>${title} options</h1>
<table border="0">
<tr>
<th>name</th>
<th>type</th>
<th>default</th>
<th>description</th>
</tr>
PREFIX);
for each (opt in Options.validOptions) {
var isTimezone = (opt.type == "timezone");
var defValue = opt.defaultValue;
if (defValue == null) {
defValue = "<none>";
}
if (isTimezone) {
// don't output current user's timezone
defValue = "<default-timezone>"
}
print(<<ROW
<tr>
<td><b>${opt.name} ${opt.shortName == null? "" : opt.shortName}</b></td>
<td>${opt.type}</td>
<td>${defValue}</td>
<td>${opt.description}</td>
</tr>
ROW);
}
print(<<SUFFIX
</table>
</body>
</html>
SUFFIX);