view test/gc/concurrentMarkSweep/DisableResizePLAB.java @ 21345:a818a6a57ef4

LIRTest: make LIRTestSpecification accessible.
author Josef Eisl <josef.eisl@jku.at>
date Tue, 12 May 2015 17:56:02 +0200
parents a28b7832203a
children
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/*
* Copyright (c) 2014, 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.
*/

/*
 * @test DisableResizePLAB
 * @key gc
 * @bug 8060467
 * @author filipp.zhinkin@oracle.com, john.coomes@oracle.com
 * @summary Run CMS with PLAB resizing disabled and a small OldPLABSize
 * @run main/othervm -XX:+UseConcMarkSweepGC -XX:-ResizePLAB -XX:OldPLABSize=1k -Xmx256m -XX:+PrintGCDetails DisableResizePLAB
 */

public class DisableResizePLAB {
    public static void main(String args[]) throws Exception {
        Object garbage[] = new Object[1_000];
        for (int i = 0; i < garbage.length; i++) {
            garbage[i] = new byte[0];
        }
        long startTime = System.currentTimeMillis();
        while (System.currentTimeMillis() - startTime < 10_000) {
            Object o = new byte[1024];
        }
    }
}