1 /* 2 * Copyright (c) 2013, 2016, Oracle and/or its affiliates. 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 import java.util.List; 25 import java.lang.management.*; 26 import jdk.test.lib.Platform; 27 import jdk.test.lib.process.ProcessTools; 28 import jdk.test.lib.process.OutputAnalyzer; 29 import static jdk.test.lib.Asserts.*; 30 31 /* @test TestMetaspaceMemoryPool 32 * @bug 8000754 33 * @summary Tests that a MemoryPoolMXBeans is created for metaspace and that a 34 * MemoryManagerMXBean is created. 35 * @library /test/lib 36 * @modules java.base/jdk.internal.misc 37 * java.management 38 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops TestMetaspaceMemoryPool 39 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:MaxMetaspaceSize=60m TestMetaspaceMemoryPool 40 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers TestMetaspaceMemoryPool 41 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers -XX:CompressedClassSpaceSize=60m TestMetaspaceMemoryPool 42 */ 43 public class TestMetaspaceMemoryPool { 44 public static void main(String[] args) { 45 verifyThatMetaspaceMemoryManagerExists(); 46 47 boolean isMetaspaceMaxDefined = InputArguments.containsPrefix("-XX:MaxMetaspaceSize"); 48 verifyMemoryPool(getMemoryPool("Metaspace"), isMetaspaceMaxDefined); 49 50 if (Platform.is64bit()) { 51 if (InputArguments.contains("-XX:+UseCompressedOops")) { 52 MemoryPoolMXBean cksPool = getMemoryPool("Compressed Class Space"); 53 verifyMemoryPool(cksPool, true); 54 } 55 } 56 } 57 58 private static void verifyThatMetaspaceMemoryManagerExists() { 59 List<MemoryManagerMXBean> managers = ManagementFactory.getMemoryManagerMXBeans(); 60 for (MemoryManagerMXBean manager : managers) { 61 if (manager.getName().equals("Metaspace Manager")) { 62 return; 63 } 64 } 65 66 throw new RuntimeException("Expected to find a metaspace memory manager"); 67 } 68 69 private static MemoryPoolMXBean getMemoryPool(String name) { 70 List<MemoryPoolMXBean> pools = ManagementFactory.getMemoryPoolMXBeans(); 71 for (MemoryPoolMXBean pool : pools) { 72 if (pool.getName().equals(name)) { 73 return pool; 74 } 75 } 76 77 throw new RuntimeException("Expected to find a memory pool with name " + name); 78 } 79 80 private static void verifyMemoryPool(MemoryPoolMXBean pool, boolean isMaxDefined) { 81 MemoryUsage mu = pool.getUsage(); 82 long init = mu.getInit(); 83 long used = mu.getUsed(); 84 long committed = mu.getCommitted(); 85 long max = mu.getMax(); 86 87 assertGTE(init, 0L); 88 assertGTE(used, init); 89 assertGTE(committed, used); 90 91 if (isMaxDefined) { 92 assertGTE(max, committed); 93 } else { 94 assertEQ(max, -1L); 95 } 96 } 97 }