138 lines
3.9 KiB
Java
138 lines
3.9 KiB
Java
/*
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* Copyright (c) 2011, 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/GcPointerCheckTest.
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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 no pointers are broken.
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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 -XX:-UseGCOverheadLimit gc.gctests.GcPointerCheckTest.GcPointerCheckTest
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*/
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package gc.gctests.GcPointerCheckTest;
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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.ThreadedGCTest;
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import nsk.share.test.ExecutionController;
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/**
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* Test that no pointers are broken.
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*/
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public class GcPointerCheckTest extends ThreadedGCTest {
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@Override
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protected Runnable createRunnable(int i) {
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return new Test();
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}
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class Test implements Runnable {
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/**
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* Helper class for linking objects together.
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*/
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private class PointerHelper {
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public PointerHelper next;
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}
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private PointerHelper first;
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ExecutionController stresser;
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@Override
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public void run() {
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if (stresser == null) {
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stresser = getExecutionController();
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}
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while (stresser.continueExecution()) {
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testGcPointers();
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}
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}
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/**
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* Create a lot of objects and link them together, then verify
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* that the pointers are pointing to the correct type of objects.
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*
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* @return success if all references points to the correct type
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* of object.
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*/
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public void testGcPointers() {
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int innerIters = 1;
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int outerIters = 200;
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PointerHelper tmp1;
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PointerHelper tmp2;
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while (outerIters > 0) {
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int i = 0;
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tmp1 = new PointerHelper();
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this.first = tmp1;
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while (i != innerIters) {
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i++;
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tmp2 = new PointerHelper();
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tmp1.next = tmp2;
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tmp1 = tmp2;
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tmp2 = new PointerHelper();
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}
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outerIters--;
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if (!checkRefs()) {
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throw new TestFailure("Some references were bad");
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}
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}
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}
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private boolean checkRefs() {
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PointerHelper iter = this.first;
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for (int i = 0; iter != null; iter = iter.next) {
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i++;
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if (iter.getClass() != PointerHelper.class) {
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//("GC causer bad ref on " + i);
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return false;
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}
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}
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return true;
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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 GcPointerCheckTest(), args);
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}
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}
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