| /* |
| * Copyright (c) 2007, 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/SoftReference/soft003. |
| * VM Testbase keywords: [gc, stress, stressopt, nonconcurrent] |
| * |
| * @library /vmTestbase |
| * /test/lib |
| * @run driver jdk.test.lib.FileInstaller . . |
| * @run main/othervm -XX:-UseGCOverheadLimit gc.gctests.SoftReference.soft003.soft003 -t 1 |
| */ |
| |
| package gc.gctests.SoftReference.soft003; |
| |
| import java.lang.ref.Reference; |
| import nsk.share.test.*; |
| import nsk.share.gc.*; |
| import nsk.share.TestFailure; |
| import java.lang.ref.SoftReference; |
| |
| /** |
| * Test that GC clears soft references before throwing OOM. |
| * |
| * This test creates a number of soft references, then provokes |
| * GC with Algorithms.eatMemory() and checks that all references |
| * have been cleared. |
| */ |
| public class soft003 extends ThreadedGCTest { |
| |
| class Worker implements Runnable { |
| |
| private int arrayLength; |
| private int objectSize = 100; |
| private Reference[] references; |
| |
| public void run() { |
| for (int i = 0; i < arrayLength; ++i) { |
| references[i] = new SoftReference<MemoryObject>(new MemoryObject(LocalRandom.nextInt(objectSize))); |
| } |
| Algorithms.eatMemory(getExecutionController()); |
| if (!getExecutionController().continueExecution()) { |
| return; |
| } |
| // Check that all references have been cleared |
| int n = 0; |
| for (int i = 0; i < arrayLength; ++i) { |
| if (references[i].get() != null) { |
| ++n; |
| } |
| } |
| if (n != 0) { |
| references = null; |
| throw new TestFailure("Some of the references have been not cleared: " + n); |
| } |
| } |
| |
| public void Worker() { |
| arrayLength = Memory.getArrayLength(runParams.getTestMemory(), Memory.getReferenceSize() + objectSize); |
| System.out.println("Array size: " + arrayLength); |
| references = new Reference[arrayLength]; |
| } |
| } |
| |
| @Override |
| protected Runnable createRunnable(int i) { |
| return new Worker(); |
| } |
| |
| public static void main(String[] args) { |
| GC.runTest(new soft003(), args); |
| } |
| } |