| /* |
| * Copyright (c) 2004, 2018, 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 gc |
| * |
| * @summary converted from VM Testbase gc/gctests/PhantomReference/PhantomReferenceTest. |
| * VM Testbase keywords: [gc, stress, stressopt, nonconcurrent, jrockit] |
| * VM Testbase readme: |
| * DESCRIPTION |
| * Test that verifies the PhantomReference handling in JRockit. |
| * |
| * COMMENTS |
| * This test was ported from JRockit test suite. |
| * |
| * @library /vmTestbase |
| * /test/lib |
| * @run driver jdk.test.lib.FileInstaller . . |
| * @run main/othervm |
| * -XX:-UseGCOverheadLimit |
| * gc.gctests.PhantomReference.PhantomReferenceTest.PhantomReferenceTest |
| */ |
| |
| package gc.gctests.PhantomReference.PhantomReferenceTest; |
| |
| import gc.gctests.PhantomReference.PRHelper; |
| import gc.gctests.PhantomReference.PhantomHelper; |
| import java.lang.ref.ReferenceQueue; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.Random; |
| import nsk.share.TestFailure; |
| import nsk.share.gc.GC; |
| import nsk.share.gc.GCTestBase; |
| import nsk.share.gc.gp.GarbageUtils; |
| import nsk.share.test.Stresser; |
| |
| /** |
| * Tests for the PhantomReference handling in JRockit. |
| */ |
| public class PhantomReferenceTest extends GCTestBase { |
| |
| /** |
| * Test that verifies the PhantomReference handling in JRockit. |
| * |
| * @return success if all phantom references were enqueued |
| */ |
| public final void run() { |
| long seed; |
| int minSize; |
| int maxSize; |
| int nrOfObjs; |
| int sleepTime; |
| long maxWaitTime; |
| |
| |
| seed = runParams.getSeed(); |
| minSize = 2048; |
| maxSize = 32768; |
| nrOfObjs = 1000; |
| sleepTime = 10000; |
| maxWaitTime = 30000; |
| |
| Random rndGenerator = new Random(seed); |
| long multiplier = maxSize - minSize; |
| ReferenceQueue rq = new ReferenceQueue(); |
| HashMap hmHelper = new HashMap(); |
| ArrayList alPhantomRefs = new ArrayList(); |
| |
| for (int i = 0; i < nrOfObjs; i++) { |
| int allocationSize = ((int) (rndGenerator.nextDouble() |
| * multiplier)) + minSize; |
| byte[] tmp = new byte[allocationSize]; |
| Integer ik = new Integer(tmp.hashCode()); |
| if (hmHelper.containsKey(ik)) { |
| PhantomHelper ph = (PhantomHelper) hmHelper.get(ik); |
| ph.increaseHashCounter(); |
| hmHelper.put(ik, ph); |
| } else { |
| hmHelper.put(ik, new PhantomHelper(tmp.hashCode())); |
| } |
| |
| PRHelper prh = new PRHelper(tmp, rq); |
| prh.setReferentHashCode(tmp.hashCode()); |
| alPhantomRefs.add(prh); |
| prh = null; |
| tmp = null; |
| } |
| |
| Stresser stresser = new Stresser(runParams.getStressOptions()); |
| stresser.start(0); |
| GarbageUtils.eatMemory(stresser); |
| if (!stresser.continueExecution()) { |
| return; //we couldn't be sure that FullGC is triggered |
| } |
| String retInfo = PhantomHelper.checkAllHashCodes( |
| rq, hmHelper, maxWaitTime); |
| if (retInfo != null) { |
| alPhantomRefs.clear(); |
| hmHelper.clear(); |
| throw new TestFailure(retInfo); |
| } |
| |
| // Make sure the ArrayList:s are live at the end of the test |
| // to make sure that the references gets enqueued. |
| alPhantomRefs.clear(); |
| hmHelper.clear(); |
| |
| alPhantomRefs = null; |
| hmHelper = null; |
| } |
| |
| public static void main(String[] args) { |
| GC.runTest(new PhantomReferenceTest(), args); |
| } |
| } |