| /* |
| * 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 |
| * @requires vm.gc=="ConcMarkSweep" | vm.gc=="null" |
| * @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]; |
| } |
| } |
| } |
