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/*
* Copyright (c) 2007, 2022, 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
* @key stress randomness
*
* @summary converted from VM Testbase gc/gctests/LoadUnloadGC2.
* VM Testbase keywords: [gc, stress, stressopt, nonconcurrent, quick]
*
* @library /vmTestbase
* /test/lib
* @build jdk.test.whitebox.WhiteBox
* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI gc.gctests.LoadUnloadGC2.LoadUnloadGC2
*/
package gc.gctests.LoadUnloadGC2;
import jdk.test.whitebox.WhiteBox;
import nsk.share.*;
import nsk.share.test.*;
import nsk.share.gc.*;
import nsk.share.gc.gp.*;
import nsk.share.gc.gp.classload.*;
import java.lang.reflect.Array;
public class LoadUnloadGC2 extends GCTestBase {
private static int CYCLE = 1000;
public void run() {
Stresser stresser = new Stresser(runParams.getStressOptions());
stresser.start(500000);
int iteration = 0;
try {
GarbageProducer garbageProducer = new GeneratedClassProducer();
while (stresser.iteration()) {
garbageProducer.create(512L);
if(iteration++ > CYCLE) {
// Unload once every cycle.
iteration = 0;
garbageProducer = null;
// Perform GC so that
// class gets unloaded
WhiteBox.getWhiteBox().fullGC();
garbageProducer = new GeneratedClassProducer();
}
}
} finally {
stresser.finish();
}
}
public static void main(String[] args) {
Tests.runTest(new LoadUnloadGC2(), args);
}
}
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