1 /* 2 * Copyright (c) 2017, 2018, Red Hat, Inc. 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 package gc.epsilon; 26 27 /** 28 * @test TestMemoryPools 29 * @requires vm.gc.Epsilon & !vm.graal.enabled 30 * @summary Test JMX memory pools 31 * @modules java.base/jdk.internal.misc 32 * java.management 33 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC -Xmx1g -Xms1g gc.epsilon.TestMemoryPools 34 */ 35 36 import java.lang.management.*; 37 import java.util.*; 38 39 public class TestMemoryPools { 40 41 public static void main(String[] args) throws Exception { 42 List<MemoryManagerMXBean> mms = ManagementFactory.getMemoryManagerMXBeans(); 43 if (mms == null) { 44 throw new RuntimeException("getMemoryManagerMXBeans is null"); 45 } 46 if (mms.isEmpty()) { 47 throw new RuntimeException("getMemoryManagerMXBeans is empty"); 48 } 49 for (MemoryManagerMXBean mmBean : mms) { 50 String[] names = mmBean.getMemoryPoolNames(); 51 if (names == null) { 52 throw new RuntimeException("getMemoryPoolNames() is null"); 53 } 54 if (names.length == 0) { 55 throw new RuntimeException("getMemoryPoolNames() is empty"); 56 } 57 for (String name : names) { 58 if (name == null) { 59 throw new RuntimeException("pool name is null"); 60 } 61 if (name.length() == 0) { 62 throw new RuntimeException("pool name is empty"); 63 } 64 } 65 } 66 } 67 }