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/*
* 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);
}
}
}
}
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