| /* |
| * Copyright (c) 2008, 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. |
| */ |
| |
| import java.lang.instrument.Instrumentation; |
| |
| public class StressGetObjectSizeApp |
| extends ASimpleInstrumentationTestCase |
| { |
| |
| /** |
| * Constructor for StressGetObjectSizeApp. |
| * @param name |
| */ |
| public StressGetObjectSizeApp(String name) |
| { |
| super(name); |
| } |
| |
| public static void |
| main (String[] args) |
| throws Throwable { |
| ATestCaseScaffold test = new StressGetObjectSizeApp(args[0]); |
| test.runTest(); |
| } |
| |
| protected final void |
| doRunTest() |
| throws Throwable { |
| stressGetObjectSize(); |
| } |
| |
| public void stressGetObjectSize() { |
| System.out.println("main: an object size=" + |
| fInst.getObjectSize(new Object())); |
| |
| RoundAndRound[] threads = new RoundAndRound[10]; |
| for (int i = 0; i < threads.length; ++i) { |
| threads[i] = new RoundAndRound(fInst); |
| threads[i].start(); |
| } |
| try { |
| Thread.sleep(500); // let all threads get going in their loops |
| } catch (InterruptedException ie) { |
| } |
| System.out.println("stressGetObjectSize: returning"); |
| return; |
| } |
| |
| private static class RoundAndRound extends Thread { |
| private final Instrumentation inst; |
| private final Object anObject; |
| |
| public RoundAndRound(Instrumentation inst) { |
| this.inst = inst; |
| this.anObject = new Object(); |
| setDaemon(true); |
| } |
| |
| public void run() { |
| long sum = 0; |
| while (true) { |
| sum += inst.getObjectSize(anObject); |
| } |
| } |
| } |
| } |