| /* |
| * Copyright (c) 2013, 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. |
| */ |
| |
| import java.util.List; |
| import java.lang.management.*; |
| import com.oracle.java.testlibrary.*; |
| import static com.oracle.java.testlibrary.Asserts.*; |
| |
| /* @test TestMetaspaceMemoryPool |
| * @bug 8000754 |
| * @summary Tests that a MemoryPoolMXBeans is created for metaspace and that a |
| * MemoryManagerMXBean is created. |
| * @library /testlibrary |
| * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops TestMetaspaceMemoryPool |
| * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:MaxMetaspaceSize=60m TestMetaspaceMemoryPool |
| * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers TestMetaspaceMemoryPool |
| * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers -XX:CompressedClassSpaceSize=60m TestMetaspaceMemoryPool |
| */ |
| public class TestMetaspaceMemoryPool { |
| public static void main(String[] args) { |
| verifyThatMetaspaceMemoryManagerExists(); |
| |
| boolean isMetaspaceMaxDefined = InputArguments.containsPrefix("-XX:MaxMetaspaceSize"); |
| verifyMemoryPool(getMemoryPool("Metaspace"), isMetaspaceMaxDefined); |
| |
| if (Platform.is64bit()) { |
| if (InputArguments.contains("-XX:+UseCompressedOops")) { |
| MemoryPoolMXBean cksPool = getMemoryPool("Compressed Class Space"); |
| verifyMemoryPool(cksPool, true); |
| } |
| } |
| } |
| |
| private static void verifyThatMetaspaceMemoryManagerExists() { |
| List<MemoryManagerMXBean> managers = ManagementFactory.getMemoryManagerMXBeans(); |
| for (MemoryManagerMXBean manager : managers) { |
| if (manager.getName().equals("Metaspace Manager")) { |
| return; |
| } |
| } |
| |
| throw new RuntimeException("Expected to find a metaspace memory manager"); |
| } |
| |
| private static MemoryPoolMXBean getMemoryPool(String name) { |
| List<MemoryPoolMXBean> pools = ManagementFactory.getMemoryPoolMXBeans(); |
| for (MemoryPoolMXBean pool : pools) { |
| if (pool.getName().equals(name)) { |
| return pool; |
| } |
| } |
| |
| throw new RuntimeException("Expected to find a memory pool with name " + name); |
| } |
| |
| private static void verifyMemoryPool(MemoryPoolMXBean pool, boolean isMaxDefined) { |
| MemoryUsage mu = pool.getUsage(); |
| long init = mu.getInit(); |
| long used = mu.getUsed(); |
| long committed = mu.getCommitted(); |
| long max = mu.getMax(); |
| |
| assertGTE(init, 0L); |
| assertGTE(used, init); |
| assertGTE(committed, used); |
| |
| if (isMaxDefined) { |
| assertGTE(max, committed); |
| } else { |
| assertEQ(max, -1L); |
| } |
| } |
| } |