| /* |
| * 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/LargeObjects/large002. |
| * VM Testbase keywords: [gc, stress, stressopt, nonconcurrent] |
| * VM Testbase readme: |
| * DESCRIPTION |
| * The test checks that Garbage Collector correctly does not throw any |
| * unexpected exceptions/errors while allocating large objects (classes |
| * that have more than 65535 fields and classes that have less than 65535 |
| * fields). 65535 of fields is a limitation for JVM (see JVM specification |
| * Second edition 4.10). |
| * Since it is impossible to create one class with about 65535 of fields |
| * (javac cannot compile it), a child class extends a parent class, so the |
| * fields are devided into two subsets. However, the child class still has |
| * about 65535 of fields. |
| * The test starts a number of threads. This number is either set in *.cfg |
| * file or is calculated by the test itself based on the machine (see |
| * nsk.share.gc.Algorithms.getThreadsCount() method). As soon as all threads |
| * are started, each thread begins its checking. |
| * There are 13 classes to be loaded by each thread. These classes are |
| * generated by nsk.share.gc.Generator (see its javadoc for more details). |
| * Each class has a huge number of fields, and the number of fields is more than |
| * the JVM limitation. |
| * The test loads the classes with nsk.share.gc.GCClassUnloader class that |
| * extends nsk.share.ClassUnloader and has a bit different algorith of eating |
| * heap. As soon as a class is loaded, the test creates an instance of |
| * it - allocates an object of that type. Then it drops references to the |
| * class and to the instance and tries to unload the class. The test does not |
| * expect any exceptions to be thrown. |
| * |
| * @library /vmTestbase |
| * /test/lib |
| * @run driver jdk.test.lib.FileInstaller . . |
| * |
| * @comment generate and compile nsk.share.gc.newclass.* classes |
| * @run driver nsk.share.gc.GenClassesBuilder |
| * |
| * @run main/othervm |
| * -XX:-UseGCOverheadLimit |
| * gc.gctests.LargeObjects.large001.large001 |
| * -largeClassesPath classes |
| * -isOverLimitFields true |
| * -aggregationDepth 0 |
| * -t 1 |
| */ |
| |
