1 /* 2 * Copyright (c) 2017, 2018, Red Hat, Inc. All rights reserved. 3 * 4 * This code is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License version 2 only, as 6 * published by the Free Software Foundation. 7 * 8 * This code is distributed in the hope that it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 11 * version 2 for more details (a copy is included in the LICENSE file that 12 * accompanied this code). 13 * 14 * You should have received a copy of the GNU General Public License version 15 * 2 along with this work; if not, write to the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 17 * 18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 19 * or visit www.oracle.com if you need additional information or have any 20 * questions. 21 * 22 */ 23 24 /** 25 * @test TestMemoryMXBeans 26 * @key gc 27 * @summary Test JMX memory beans 28 * 29 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g TestMemoryMXBeans -1 1024 30 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xms1g -Xmx1g TestMemoryMXBeans 1024 1024 31 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xms128m -Xmx1g TestMemoryMXBeans 128 1024 32 */ 33 34 import java.lang.management.*; 35 import java.util.*; 36 37 public class TestMemoryMXBeans { 38 39 public static void main(String[] args) throws Exception { 40 if (args.length < 2) { 41 throw new IllegalStateException("Should provide expected heap sizes"); 42 } 43 44 long initSize = 1L * Integer.parseInt(args[0]) * 1024 * 1024; 45 long maxSize = 1L * Integer.parseInt(args[1]) * 1024 * 1024; 46 47 testMemoryBean(initSize, maxSize); 48 } 49 50 public static void testMemoryBean(long initSize, long maxSize) { 51 MemoryMXBean memoryMXBean = ManagementFactory.getMemoryMXBean(); 52 long heapInit = memoryMXBean.getHeapMemoryUsage().getInit(); 53 long heapMax = memoryMXBean.getHeapMemoryUsage().getMax(); 54 long nonHeapInit = memoryMXBean.getNonHeapMemoryUsage().getInit(); 55 long nonHeapMax = memoryMXBean.getNonHeapMemoryUsage().getMax(); 56 57 if (initSize > 0 && heapInit != initSize) { 58 throw new IllegalStateException("Init heap size is wrong: " + heapInit + " vs " + initSize); 59 } 60 if (maxSize > 0 && heapMax != maxSize) { 61 throw new IllegalStateException("Max heap size is wrong: " + heapMax + " vs " + maxSize); 62 } 63 } 64 }