87 lines
2.6 KiB
Java
87 lines
2.6 KiB
Java
/*
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* Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.lang.instrument.Instrumentation;
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public class StressGetObjectSizeApp
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extends ASimpleInstrumentationTestCase
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{
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/**
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* Constructor for StressGetObjectSizeApp.
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* @param name
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*/
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public StressGetObjectSizeApp(String name)
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{
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super(name);
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}
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public static void
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main (String[] args)
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throws Throwable {
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ATestCaseScaffold test = new StressGetObjectSizeApp(args[0]);
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test.runTest();
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}
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protected final void
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doRunTest()
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throws Throwable {
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stressGetObjectSize();
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}
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public void stressGetObjectSize() {
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System.out.println("main: an object size=" +
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fInst.getObjectSize(new Object()));
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RoundAndRound[] threads = new RoundAndRound[10];
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for (int i = 0; i < threads.length; ++i) {
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threads[i] = new RoundAndRound(fInst);
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threads[i].start();
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}
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try {
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Thread.sleep(500); // let all threads get going in their loops
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} catch (InterruptedException ie) {
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}
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System.out.println("stressGetObjectSize: returning");
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return;
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}
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private static class RoundAndRound extends Thread {
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private final Instrumentation inst;
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private final Object anObject;
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public RoundAndRound(Instrumentation inst) {
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this.inst = inst;
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this.anObject = new Object();
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setDaemon(true);
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}
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public void run() {
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long sum = 0;
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while (true) {
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sum += inst.getObjectSize(anObject);
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}
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}
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}
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}
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