| /* |
| * Copyright (c) 2017, 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/soft002. |
| * VM Testbase keywords: [gc, stress, stressopt, nonconcurrent] |
| * VM Testbase readme: |
| * DESCRIPTION |
| * The test checks that Garbage Collector correctly works with |
| * SoftReferences. It also checks that no unexpected exceptions and errors |
| * are thrown or the JVM is not crashed. |
| * The test starts a number of threads. Each thread run tests for some time |
| * or serveral iterations. See javadoc StressOptions for configuration. |
| * First of all each thread defines what type to check (there are 10 types |
| * totally). As soon as the type is defined, a SoftRefence is created that |
| * refers to an array of tested type and is registered with in a queue. A |
| * SoftRefence for NonbranchyTree class does not refer to an array, but to |
| * instances of the class. |
| * After that a thread performs next checks for the reference: |
| * 1. The reference is in queue after GC is provoked with |
| * Algorithms.eatMemory() method (a single thread eats the memory). |
| * 2. queue.remove() returns reference from the queue. |
| * 3. queue.poll() returns null. |
| * 4. reference.clear() does not throw any exception. |
| * The test extends ThreadedGCTest and implements GarbageProducerAware and |
| * MemoryStrategyAware interfaces. The corresponding javadoc documentation |
| * for additional test configuration. |
| * |
| * @library /vmTestbase |
| * /test/lib |
| * @run driver jdk.test.lib.FileInstaller . . |
| * @run main/othervm gc.gctests.SoftReference.soft001.soft001 -ms high |
| */ |
| |
