072459a055
Reviewed-by: erikj, ihse, ehelin
151 lines
4.8 KiB
Java
151 lines
4.8 KiB
Java
/*
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* Copyright (c) 2004, 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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/*
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* @test
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* @key stress gc
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*
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* @summary converted from VM Testbase gc/gctests/SoftReference/SoftReferenceTest.
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* VM Testbase keywords: [gc, stress, stressopt, nonconcurrent, jrockit]
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* VM Testbase readme:
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* DESCRIPTION
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* Test that all SoftReferences has been cleared at time of OOM.
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*
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* COMMENTS
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* This test was ported from JRockit test suite.
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*
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* @library /vmTestbase
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* /test/lib
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* @run driver jdk.test.lib.FileInstaller . .
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* @run main/othervm gc.gctests.SoftReference.SoftReferenceTest.SoftReferenceTest -stressTime 600
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*/
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package gc.gctests.SoftReference.SoftReferenceTest;
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import java.lang.ref.SoftReference;
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import java.util.ArrayList;
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import java.util.Random;
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import nsk.share.TestFailure;
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import nsk.share.gc.GC;
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import nsk.share.gc.GCTestBase;
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import nsk.share.test.ExecutionController;
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import nsk.share.test.Stresser;
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/**
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* Tests for the SoftReference handling in JRockit.
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*/
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public final class SoftReferenceTest extends GCTestBase {
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private ExecutionController stresser;
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/**
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* Test that all SoftReferences has been cleared at
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* time of OOM.
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*
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* @return success if all SoftReferences are NULL at
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* time of OOM.
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*/
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public void run() {
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//prepare stresser
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stresser = new Stresser("Stresser to limit execution time", runParams.getStressOptions());
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stresser.start(1);
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long seed;
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int minSize;
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int maxSize;
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int keepEveryXthObject;
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long counter = 0;
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seed = runParams.getSeed();
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minSize = 2048;
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maxSize = 32768;
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keepEveryXthObject = 4;
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Random rndGenerator = new Random(seed);
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long multiplier = maxSize - minSize;
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ArrayList arrSoftRefs = new ArrayList();
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ArrayList arrObjects = new ArrayList();
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long numberOfNotNulledObjects = 0;
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long oomSoftArraySize = 0;
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try {
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while (true && stresser.continueExecution()) {
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int allocationSize = ((int) (rndGenerator.nextDouble()
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* multiplier)) + minSize;
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byte[] tmp = new byte[allocationSize];
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// Keep every Xth object to make sure we hit OOM pretty fast
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if (counter % keepEveryXthObject == 0) {
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arrObjects.add(tmp);
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} else {
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arrSoftRefs.add(new SoftReference(tmp));
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}
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// Make sure the temporary object is dereferenced
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tmp = null;
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counter++;
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if (counter == Long.MAX_VALUE) {
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counter = 0;
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}
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}
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} catch (OutOfMemoryError oome) {
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// Get the number of soft refs first, so we don't trigger
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// another OOM.
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oomSoftArraySize = arrSoftRefs.size();
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for (int i = 0; i < arrSoftRefs.size(); i++) {
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SoftReference sr = (SoftReference) arrSoftRefs.get(i);
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Object o = sr.get();
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if (o != null) {
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numberOfNotNulledObjects++;
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}
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}
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// Make sure we clear all refs before we return failure, since
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// coconut require some memory to complete, and since we're in
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// an OOM situation, that could cause trouble.
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arrSoftRefs = null;
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arrObjects = null;
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if (numberOfNotNulledObjects > 0) {
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throw new TestFailure(numberOfNotNulledObjects + " out of "
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+ oomSoftArraySize + " SoftReferences was not "
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+ "null at time of OutOfMemoryError");
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}
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} finally {
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arrSoftRefs = null;
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arrObjects = null;
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}
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}
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public static void main(String[] args) {
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GC.runTest(new SoftReferenceTest(), args);
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}
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}
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