| /* |
| * Copyright (c) 2013, 2015, 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.util.ArrayList; |
| |
| import jdk.test.lib.*; |
| import static jdk.test.lib.Asserts.*; |
| |
| /* @test TestMetaspacePerfCounters |
| * @bug 8014659 |
| * @requires vm.gc=="null" |
| * @library /testlibrary |
| * @summary Tests that performance counters for metaspace and compressed class |
| * space exists and works. |
| * @modules java.base/jdk.internal.misc |
| * java.compiler |
| * java.management |
| * jdk.jvmstat/sun.jvmstat.monitor |
| * @ignore 8151460 |
| * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:-UseCompressedClassPointers -XX:+UsePerfData -XX:+UseSerialGC TestMetaspacePerfCounters |
| * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:-UseCompressedClassPointers -XX:+UsePerfData -XX:+UseParallelGC -XX:+UseParallelOldGC TestMetaspacePerfCounters |
| * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:-UseCompressedClassPointers -XX:+UsePerfData -XX:+UseG1GC TestMetaspacePerfCounters |
| * |
| * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers -XX:+UsePerfData -XX:+UseSerialGC TestMetaspacePerfCounters |
| * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers -XX:+UsePerfData -XX:+UseParallelGC -XX:+UseParallelOldGC TestMetaspacePerfCounters |
| * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedClassPointers -XX:+UsePerfData -XX:+UseG1GC TestMetaspacePerfCounters |
| */ |
| public class TestMetaspacePerfCounters { |
| public static Class fooClass = null; |
| private static final String[] counterNames = {"minCapacity", "maxCapacity", "capacity", "used"}; |
| |
| public static void main(String[] args) throws Exception { |
| String metaspace = "sun.gc.metaspace"; |
| String ccs = "sun.gc.compressedclassspace"; |
| |
| checkPerfCounters(metaspace); |
| |
| if (isUsingCompressedClassPointers()) { |
| checkPerfCounters(ccs); |
| checkUsedIncreasesWhenLoadingClass(ccs); |
| } else { |
| checkEmptyPerfCounters(ccs); |
| checkUsedIncreasesWhenLoadingClass(metaspace); |
| } |
| } |
| |
| private static void checkPerfCounters(String ns) throws Exception { |
| long minCapacity = getMinCapacity(ns); |
| long maxCapacity = getMaxCapacity(ns); |
| long capacity = getCapacity(ns); |
| long used = getUsed(ns); |
| |
| assertGTE(minCapacity, 0L); |
| assertGTE(used, minCapacity); |
| assertGTE(capacity, used); |
| assertGTE(maxCapacity, capacity); |
| } |
| |
| private static void checkEmptyPerfCounters(String ns) throws Exception { |
| for (PerfCounter counter : countersInNamespace(ns)) { |
| String msg = "Expected " + counter.getName() + " to equal 0"; |
| assertEQ(counter.longValue(), 0L, msg); |
| } |
| } |
| |
| private static void checkUsedIncreasesWhenLoadingClass(String ns) throws Exception { |
| long before = getUsed(ns); |
| fooClass = compileAndLoad("Foo", "public class Foo { }"); |
| System.gc(); |
| long after = getUsed(ns); |
| |
| assertGT(after, before); |
| } |
| |
| private static List<PerfCounter> countersInNamespace(String ns) throws Exception { |
| List<PerfCounter> counters = new ArrayList<>(); |
| for (String name : counterNames) { |
| counters.add(PerfCounters.findByName(ns + "." + name)); |
| } |
| return counters; |
| } |
| |
| private static Class<?> compileAndLoad(String name, String source) throws Exception { |
| byte[] byteCode = InMemoryJavaCompiler.compile(name, source); |
| return ByteCodeLoader.load(name, byteCode); |
| } |
| |
| private static boolean isUsingCompressedClassPointers() { |
| return Platform.is64bit() && InputArguments.contains("-XX:+UseCompressedClassPointers"); |
| } |
| |
| private static long getMinCapacity(String ns) throws Exception { |
| return PerfCounters.findByName(ns + ".minCapacity").longValue(); |
| } |
| |
| private static long getCapacity(String ns) throws Exception { |
| return PerfCounters.findByName(ns + ".capacity").longValue(); |
| } |
| |
| private static long getMaxCapacity(String ns) throws Exception { |
| return PerfCounters.findByName(ns + ".maxCapacity").longValue(); |
| } |
| |
| private static long getUsed(String ns) throws Exception { |
| return PerfCounters.findByName(ns + ".used").longValue(); |
| } |
| } |