125 lines
4.9 KiB
Java
125 lines
4.9 KiB
Java
/*
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* Copyright (c) 2013, 2022, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package gc.metaspace;
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import java.util.List;
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import java.lang.management.*;
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import jdk.test.lib.Platform;
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import static jdk.test.lib.Asserts.*;
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import gc.testlibrary.PerfCounters;
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/* @test TestPerfCountersAndMemoryPools
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* @bug 8023476
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* @library /test/lib /
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* @requires vm.gc.Serial
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* @requires vm.bits == "64"
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* @summary Tests that a MemoryPoolMXBeans and PerfCounters for metaspace
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* report the same data.
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* @modules java.base/jdk.internal.misc
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* java.management
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* jdk.internal.jvmstat/sun.jvmstat.monitor
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* @run main/othervm -Xlog:class+load,class+unload=trace -XX:-UseCompressedOops -XX:-UseCompressedClassPointers -XX:+UseSerialGC -XX:+UsePerfData -Xint gc.metaspace.TestPerfCountersAndMemoryPools
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* @run main/othervm -Xlog:class+load,class+unload=trace -XX:+UseCompressedOops -XX:+UseCompressedClassPointers -XX:+UseSerialGC -XX:+UsePerfData -Xint gc.metaspace.TestPerfCountersAndMemoryPools
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*/
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/* @test TestPerfCountersAndMemoryPools
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* @bug 8023476
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* @library /test/lib /
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* @requires vm.gc.Serial
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* @requires vm.bits == "32"
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* @summary Tests that a MemoryPoolMXBeans and PerfCounters for metaspace
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* report the same data.
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* @modules java.base/jdk.internal.misc
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* java.management
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* jdk.internal.jvmstat/sun.jvmstat.monitor
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* @run main/othervm -Xlog:class+load,class+unload=trace -XX:+UseSerialGC -XX:+UsePerfData -Xint gc.metaspace.TestPerfCountersAndMemoryPools
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*/
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public class TestPerfCountersAndMemoryPools {
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public static void main(String[] args) throws Exception {
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checkMemoryUsage("Metaspace", "sun.gc.metaspace");
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if (InputArguments.contains("-XX:+UseCompressedClassPointers") && Platform.is64bit()) {
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checkMemoryUsage("Compressed Class Space", "sun.gc.compressedclassspace");
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}
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}
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private static MemoryPoolMXBean getMemoryPool(String memoryPoolName) {
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List<MemoryPoolMXBean> pools = ManagementFactory.getMemoryPoolMXBeans();
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for (MemoryPoolMXBean pool : pools) {
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if (pool.getName().equals(memoryPoolName)) {
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return pool;
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}
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}
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throw new RuntimeException("Excpted to find a memory pool with name " +
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memoryPoolName);
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}
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private static void checkMemoryUsage(String memoryPoolName, String perfNS)
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throws Exception {
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MemoryPoolMXBean pool = getMemoryPool(memoryPoolName);
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// First, call all the methods to let them allocate their own slab of metadata
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getMinCapacity(perfNS);
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getCapacity(perfNS);
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getUsed(perfNS);
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pool.getUsage().getInit();
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pool.getUsage().getUsed();
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pool.getUsage().getCommitted();
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assertEQ(1L, 1L, "Make assert load");
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// Must do a GC to update performance counters
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System.gc();
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assertEQ(getMinCapacity(perfNS), pool.getUsage().getInit(), "MinCapacity out of sync");
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long usedPerfCounters;
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long usedMXBean;
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// the pool.getUsage().getUsed() might load additional classes intermittently
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// so first verify that perfCounters are not changed, call System.gc() to reset them
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do {
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System.gc();
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usedPerfCounters = getUsed(perfNS);
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usedMXBean = pool.getUsage().getUsed();
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System.gc();
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} while (usedPerfCounters != getUsed(perfNS));
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assertEQ(usedPerfCounters, usedMXBean, "Used out of sync");
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assertEQ(getCapacity(perfNS), pool.getUsage().getCommitted(), "Committed out of sync");
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}
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private static long getMinCapacity(String ns) throws Exception {
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return PerfCounters.findByName(ns + ".minCapacity").longValue();
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}
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private static long getCapacity(String ns) throws Exception {
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return PerfCounters.findByName(ns + ".capacity").longValue();
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}
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private static long getUsed(String ns) throws Exception {
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return PerfCounters.findByName(ns + ".used").longValue();
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}
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}
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