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 /** 26 * @test 27 * @summary Test JMX memory beans 28 * @requires vm.gc.Shenandoah 29 * @modules java.base/jdk.internal.misc 30 * java.management 31 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g TestMemoryMXBeans -1 1024 32 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xms1g -Xmx1g TestMemoryMXBeans 1024 1024 33 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xms128m -Xmx1g TestMemoryMXBeans 128 1024 34 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xms1g -Xmx1g -XX:ShenandoahUncommitDelay=0 TestMemoryMXBeans 1024 1024 35 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xms128m -Xmx1g -XX:ShenandoahUncommitDelay=0 TestMemoryMXBeans 128 1024 36 */ 37 38 import java.lang.management.*; 39 import java.util.*; 40 41 public class TestMemoryMXBeans { 42 main(String[] args)43 public static void main(String[] args) throws Exception { 44 if (args.length < 2) { 45 throw new IllegalStateException("Should provide expected heap sizes"); 46 } 47 48 long initSize = 1L * Integer.parseInt(args[0]) * 1024 * 1024; 49 long maxSize = 1L * Integer.parseInt(args[1]) * 1024 * 1024; 50 51 // wait for GC to uncommit 52 Thread.sleep(1000); 53 54 testMemoryBean(initSize, maxSize); 55 } 56 testMemoryBean(long initSize, long maxSize)57 public static void testMemoryBean(long initSize, long maxSize) { 58 MemoryMXBean memoryMXBean = ManagementFactory.getMemoryMXBean(); 59 long heapInit = memoryMXBean.getHeapMemoryUsage().getInit(); 60 long heapCommitted = memoryMXBean.getHeapMemoryUsage().getCommitted(); 61 long heapMax = memoryMXBean.getHeapMemoryUsage().getMax(); 62 long nonHeapInit = memoryMXBean.getNonHeapMemoryUsage().getInit(); 63 long nonHeapCommitted = memoryMXBean.getNonHeapMemoryUsage().getCommitted(); 64 long nonHeapMax = memoryMXBean.getNonHeapMemoryUsage().getMax(); 65 66 if (initSize > 0 && heapInit != initSize) { 67 throw new IllegalStateException("Init heap size is wrong: " + heapInit + " vs " + initSize); 68 } 69 if (maxSize > 0 && heapMax != maxSize) { 70 throw new IllegalStateException("Max heap size is wrong: " + heapMax + " vs " + maxSize); 71 } 72 if (initSize > 0 && maxSize > 0 && initSize != maxSize && heapCommitted == heapMax) { 73 throw new IllegalStateException("Committed heap size is max: " + heapCommitted + 74 " (init: " + initSize + ", max: " + maxSize + ")"); 75 } 76 if (initSize > 0 && maxSize > 0 && initSize == maxSize && heapCommitted != heapMax) { 77 throw new IllegalStateException("Committed heap size is not max: " + heapCommitted + 78 " (init: " + initSize + ", max: " + maxSize + ")"); 79 } 80 if (initSize > 0 && heapCommitted < initSize) { 81 throw new IllegalStateException("Committed heap size is below min: " + heapCommitted + 82 " (init: " + initSize + ", max: " + maxSize + ")"); 83 } 84 } 85 } 86