8086053: Address inconsistencies regarding ZeroTLAB
Summary: Add zero-initialization to C1 for fast TLAB refills; strenghten C2 conditions for skipping zero-initialization.
Reviewed-by: kvn, thartmann
#// Usage: jjs -fx showenv.js
/*
* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of Oracle nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
if (!$OPTIONS._fx) {
print("Usage: jjs -fx showenv.js");
exit(1);
}
// This script displays environment entries as a HTML table.
// Demonstrates heredoc to generate HTML content and display
// using JavaFX WebView.
// JavaFX classes used
var Scene = Java.type("javafx.scene.Scene");
var WebView = Java.type("javafx.scene.web.WebView");
// JavaFX start method
function start(stage) {
stage.title = "Your Environment";
var wv = new WebView();
var envrows = "";
for (var i in $ENV) {
envrows += <<TBL
<tr>
<td>
${i}
</td>
<td>
${$ENV[i]}
</td>
</tr>
TBL
}
wv.engine.loadContent(<<EOF
<html>
<head>
<title>
Your Environment
</title>
</head>
<body>
<h1>Your Environment</h1>
<table border="1">
${envrows}
</table>
</body>
</html>
EOF, "text/html");
stage.scene = new Scene(wv, 750, 500);
stage.show();
}