141 lines
4.6 KiB
Java
141 lines
4.6 KiB
Java
/*
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* Copyright (c) 2004, 2022, 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 randomness
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*
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* @summary converted from VM Testbase gc/gctests/PhantomReference/PhantomReferenceTest.
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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 verifies the PhantomReference handling in JRockit.
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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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* @build jdk.test.whitebox.WhiteBox
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* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
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* @run main/othervm
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* -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
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* gc.gctests.PhantomReference.PhantomReferenceTest.PhantomReferenceTest
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*/
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package gc.gctests.PhantomReference.PhantomReferenceTest;
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import gc.gctests.PhantomReference.PRHelper;
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import gc.gctests.PhantomReference.PhantomHelper;
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import java.lang.ref.ReferenceQueue;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.Random;
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import jdk.test.whitebox.WhiteBox;
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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.gc.gp.GarbageUtils;
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import nsk.share.test.Stresser;
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/**
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* Tests for the PhantomReference handling in JRockit.
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*/
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public class PhantomReferenceTest extends GCTestBase {
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/**
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* Test that verifies the PhantomReference handling in JRockit.
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*
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* @return success if all phantom references were enqueued
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*/
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public final void run() {
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long seed;
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int minSize;
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int maxSize;
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int nrOfObjs;
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int sleepTime;
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long maxWaitTime;
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seed = runParams.getSeed();
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minSize = 2048;
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maxSize = 32768;
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nrOfObjs = 1000;
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sleepTime = 10000;
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maxWaitTime = 30000;
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Random rndGenerator = new Random(seed);
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long multiplier = maxSize - minSize;
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ReferenceQueue rq = new ReferenceQueue();
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HashMap hmHelper = new HashMap();
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ArrayList alPhantomRefs = new ArrayList();
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for (int i = 0; i < nrOfObjs; i++) {
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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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Integer ik = Integer.valueOf(tmp.hashCode());
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if (hmHelper.containsKey(ik)) {
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PhantomHelper ph = (PhantomHelper) hmHelper.get(ik);
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ph.increaseHashCounter();
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hmHelper.put(ik, ph);
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} else {
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hmHelper.put(ik, new PhantomHelper(tmp.hashCode()));
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}
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PRHelper prh = new PRHelper(tmp, rq);
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prh.setReferentHashCode(tmp.hashCode());
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alPhantomRefs.add(prh);
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prh = null;
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tmp = null;
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}
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Stresser stresser = new Stresser(runParams.getStressOptions());
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stresser.start(0);
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WhiteBox.getWhiteBox().fullGC();
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if (!stresser.continueExecution()) {
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return; //we couldn't be sure that FullGC is triggered
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}
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String retInfo = PhantomHelper.checkAllHashCodes(
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rq, hmHelper, maxWaitTime);
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if (retInfo != null) {
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alPhantomRefs.clear();
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hmHelper.clear();
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throw new TestFailure(retInfo);
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}
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// Make sure the ArrayList:s are live at the end of the test
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// to make sure that the references gets enqueued.
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alPhantomRefs.clear();
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hmHelper.clear();
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alPhantomRefs = null;
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hmHelper = null;
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}
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public static void main(String[] args) {
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GC.runTest(new PhantomReferenceTest(), args);
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}
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}
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