Mercurial > hg > graal-compiler
diff test/gc/metaspace/TestMetaspaceMemoryPool.java @ 11039:71963b3f802a
8013590: NPG: Add a memory pool MXBean for Metaspace
Reviewed-by: jmasa, mgerdin
author | ehelin |
---|---|
date | Wed, 26 Jun 2013 16:58:37 +0200 |
parents | |
children | 7944aba7ba41 |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/gc/metaspace/TestMetaspaceMemoryPool.java Wed Jun 26 16:58:37 2013 +0200 @@ -0,0 +1,126 @@ +/* + * 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.ManagementFactory; +import java.lang.management.MemoryManagerMXBean; +import java.lang.management.MemoryPoolMXBean; +import java.lang.management.MemoryUsage; + +import java.lang.management.RuntimeMXBean; +import java.lang.management.ManagementFactory; + +/* @test TestMetaspaceMemoryPool + * @bug 8000754 + * @summary Tests that a MemoryPoolMXBeans is created for metaspace and that a + * MemoryManagerMXBean is created. + * @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:+UseCompressedKlassPointers TestMetaspaceMemoryPool + * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedKlassPointers -XX:ClassMetaspaceSize=60m TestMetaspaceMemoryPool + */ +public class TestMetaspaceMemoryPool { + public static void main(String[] args) { + verifyThatMetaspaceMemoryManagerExists(); + verifyMemoryPool(getMemoryPool("Metaspace"), isFlagDefined("MaxMetaspaceSize")); + + if (runsOn64bit()) { + if (usesCompressedOops()) { + MemoryPoolMXBean cksPool = getMemoryPool("Compressed Class Space"); + verifyMemoryPool(cksPool, true); + } + } + } + + private static boolean runsOn64bit() { + return !System.getProperty("sun.arch.data.model").equals("32"); + } + + private static boolean usesCompressedOops() { + return isFlagDefined("+UseCompressedOops"); + } + + private static boolean isFlagDefined(String name) { + RuntimeMXBean runtimeMxBean = ManagementFactory.getRuntimeMXBean(); + List<String> args = runtimeMxBean.getInputArguments(); + for (String arg : args) { + if (arg.startsWith("-XX:" + name)) { + return true; + } + } + return false; + } + + 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(); + assertDefined(mu.getInit(), "init"); + assertDefined(mu.getUsed(), "used"); + assertDefined(mu.getCommitted(), "committed"); + + if (isMaxDefined) { + assertDefined(mu.getMax(), "max"); + } else { + assertUndefined(mu.getMax(), "max"); + } + } + + private static void assertDefined(long value, String name) { + assertTrue(value != -1, "Expected " + name + " to be defined"); + } + + private static void assertUndefined(long value, String name) { + assertEquals(value, -1, "Expected " + name + " to be undefined"); + } + + private static void assertEquals(long actual, long expected, String msg) { + assertTrue(actual == expected, msg); + } + + private static void assertTrue(boolean condition, String msg) { + if (!condition) { + throw new RuntimeException(msg); + } + } +}