1 /* 2 * Copyright (c) 2004, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @key stress gc 27 * 28 * @summary converted from VM Testbase gc/gctests/PhantomReference/PhantomReferenceTest. 29 * VM Testbase keywords: [gc, stress, stressopt, nonconcurrent, jrockit] 30 * VM Testbase readme: 31 * DESCRIPTION 32 * Test that verifies the PhantomReference handling in JRockit. 33 * 34 * COMMENTS 35 * This test was ported from JRockit test suite. 36 * 37 * @library /vmTestbase 38 * /test/lib 39 * @run driver jdk.test.lib.FileInstaller . . 40 * @run main/othervm 41 * -XX:-UseGCOverheadLimit 42 * gc.gctests.PhantomReference.PhantomReferenceTest.PhantomReferenceTest 43 */ 44 45 package gc.gctests.PhantomReference.PhantomReferenceTest; 46 47 import gc.gctests.PhantomReference.PRHelper; 48 import gc.gctests.PhantomReference.PhantomHelper; 49 import java.lang.ref.ReferenceQueue; 50 import java.util.ArrayList; 51 import java.util.HashMap; 52 import java.util.Random; 53 import nsk.share.TestFailure; 54 import nsk.share.gc.GC; 55 import nsk.share.gc.GCTestBase; 56 import nsk.share.gc.gp.GarbageUtils; 57 import nsk.share.test.Stresser; 58 59 /** 60 * Tests for the PhantomReference handling in JRockit. 61 */ 62 public class PhantomReferenceTest extends GCTestBase { 63 64 /** 65 * Test that verifies the PhantomReference handling in JRockit. 66 * 67 * @return success if all phantom references were enqueued 68 */ 69 public final void run() { 70 long seed; 71 int minSize; 72 int maxSize; 73 int nrOfObjs; 74 int sleepTime; 75 long maxWaitTime; 76 77 78 seed = runParams.getSeed(); 79 minSize = 2048; 80 maxSize = 32768; 81 nrOfObjs = 1000; 82 sleepTime = 10000; 83 maxWaitTime = 30000; 84 85 Random rndGenerator = new Random(seed); 86 long multiplier = maxSize - minSize; 87 ReferenceQueue rq = new ReferenceQueue(); 88 HashMap hmHelper = new HashMap(); 89 ArrayList alPhantomRefs = new ArrayList(); 90 91 for (int i = 0; i < nrOfObjs; i++) { 92 int allocationSize = ((int) (rndGenerator.nextDouble() 93 * multiplier)) + minSize; 94 byte[] tmp = new byte[allocationSize]; 95 Integer ik = new Integer(tmp.hashCode()); 96 if (hmHelper.containsKey(ik)) { 97 PhantomHelper ph = (PhantomHelper) hmHelper.get(ik); 98 ph.increaseHashCounter(); 99 hmHelper.put(ik, ph); 100 } else { 101 hmHelper.put(ik, new PhantomHelper(tmp.hashCode())); 102 } 103 104 PRHelper prh = new PRHelper(tmp, rq); 105 prh.setReferentHashCode(tmp.hashCode()); 106 alPhantomRefs.add(prh); 107 prh = null; 108 tmp = null; 109 } 110 111 Stresser stresser = new Stresser(runParams.getStressOptions()); 112 stresser.start(0); 113 GarbageUtils.eatMemory(stresser); 114 if (!stresser.continueExecution()) { 115 return; //we couldn't be sure that FullGC is triggered 116 } 117 String retInfo = PhantomHelper.checkAllHashCodes( 118 rq, hmHelper, maxWaitTime); 119 if (retInfo != null) { 120 alPhantomRefs.clear(); 121 hmHelper.clear(); 122 throw new TestFailure(retInfo); 123 } 124 125 // Make sure the ArrayList:s are live at the end of the test 126 // to make sure that the references gets enqueued. 127 alPhantomRefs.clear(); 128 hmHelper.clear(); 129 130 alPhantomRefs = null; 131 hmHelper = null; 132 } 133 134 public static void main(String[] args) { 135 GC.runTest(new PhantomReferenceTest(), args); 136 } 137 }