92 lines
3.7 KiB
Java
92 lines
3.7 KiB
Java
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/*
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* Copyright (c) 2013, 2018, 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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package vm.share.gc;
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import java.util.ArrayList;
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import java.util.concurrent.Callable;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import metaspace.stressHierarchy.common.exceptions.GotWrongOOMEException;
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import nsk.share.gc.gp.classload.GeneratedClassProducer;
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import nsk.share.test.ExecutionController;
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public class TriggerUnloadingByFillingMetaspace implements
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TriggerUnloadingHelper {
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private static final int NUMBER_OF_THREADS = 30;
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private static class FillMetaspace {
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private volatile boolean gotOOME = false;
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private ExecutionController stresser;
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private GeneratedClassProducer generatedClassProducer = new GeneratedClassProducer("metaspace.stressHierarchy.common.HumongousClass");
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public FillMetaspace(ExecutionController stresser) { this.stresser = stresser; }
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private class FillMetaspaceTask implements Callable<Object> {
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@Override
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public Object call() throws Exception {
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while (stresser.continueExecution() && ! gotOOME) {
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try {
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generatedClassProducer.create(-100500); //argument is not used.
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} catch (OutOfMemoryError oome) {
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if (!isInMetaspace(oome)) {
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throw new GotWrongOOMEException("Got OOME in heap while gaining OOME in metaspace. Test result can't be valid.");
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}
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gotOOME = true;
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}
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}
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return null;
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}
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}
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}
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private static boolean isInMetaspace(OutOfMemoryError error) {
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return error.getMessage().trim().toLowerCase().contains("metadata");
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}
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@Override
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public void triggerUnloading(ExecutionController stresser) {
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try {
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FillMetaspace fillMetaspace = new FillMetaspace(stresser);
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ArrayList<Callable<Object>> tasks = new ArrayList<Callable<Object>>(NUMBER_OF_THREADS);
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for (int i = 0; i < NUMBER_OF_THREADS; i++) {
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tasks.add(fillMetaspace.new FillMetaspaceTask());
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}
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ExecutorService executorService = Executors.newCachedThreadPool();
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try {
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executorService.invokeAll(tasks);
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} catch (InterruptedException e) {
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System.out.println("Process of gaining OOME in metaspace was interrupted.");
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e.printStackTrace();
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}
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} catch (OutOfMemoryError e) {
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if (!isInMetaspace(e)) {
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throw new GotWrongOOMEException("Got OOME in heap while gaining OOME in metaspace. Test result can't be valid.");
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}
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return;
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}
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}
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}
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