1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/gc/metaspace/TestMetaspacePerfCounters.java Wed Aug 07 16:47:32 2013 +0200
1.3 @@ -0,0 +1,104 @@
1.4 +/*
1.5 + * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + */
1.26 +
1.27 +import java.util.List;
1.28 +import java.util.ArrayList;
1.29 +
1.30 +import com.oracle.java.testlibrary.*;
1.31 +import static com.oracle.java.testlibrary.Asserts.*;
1.32 +
1.33 +/* @test TestMetaspacePerfCounters
1.34 + * @bug 8014659
1.35 + * @library /testlibrary
1.36 + * @summary Tests that performance counters for metaspace and compressed class
1.37 + * space exists and works.
1.38 + *
1.39 + * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:-UseCompressedKlassPointers -XX:+UsePerfData -XX:+UseSerialGC TestMetaspacePerfCounters
1.40 + * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:-UseCompressedKlassPointers -XX:+UsePerfData -XX:+UseParallelGC -XX:+UseParallelOldGC TestMetaspacePerfCounters
1.41 + * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:-UseCompressedKlassPointers -XX:+UsePerfData -XX:+UseG1GC TestMetaspacePerfCounters
1.42 + *
1.43 + * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedKlassPointers -XX:+UsePerfData -XX:+UseSerialGC TestMetaspacePerfCounters
1.44 + * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedKlassPointers -XX:+UsePerfData -XX:+UseParallelGC -XX:+UseParallelOldGC TestMetaspacePerfCounters
1.45 + * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedKlassPointers -XX:+UsePerfData -XX:+UseG1GC TestMetaspacePerfCounters
1.46 + */
1.47 +public class TestMetaspacePerfCounters {
1.48 + public static Class fooClass = null;
1.49 + private static final String[] counterNames = {"minCapacity", "maxCapacity", "capacity", "used"};
1.50 +
1.51 + public static void main(String[] args) throws Exception {
1.52 + String metaspace = "sun.gc.metaspace";
1.53 + String ccs = "sun.gc.compressedclassspace";
1.54 +
1.55 + checkPerfCounters(metaspace);
1.56 +
1.57 + if (isUsingCompressedClassPointers()) {
1.58 + checkPerfCounters(ccs);
1.59 + checkUsedIncreasesWhenLoadingClass(ccs);
1.60 + } else {
1.61 + checkEmptyPerfCounters(ccs);
1.62 + checkUsedIncreasesWhenLoadingClass(metaspace);
1.63 + }
1.64 + }
1.65 +
1.66 + private static void checkPerfCounters(String ns) throws Exception {
1.67 + for (PerfCounter counter : countersInNamespace(ns)) {
1.68 + String msg = "Expected " + counter.getName() + " to be larger than 0";
1.69 + assertGT(counter.longValue(), 0L, msg);
1.70 + }
1.71 + }
1.72 +
1.73 + private static void checkEmptyPerfCounters(String ns) throws Exception {
1.74 + for (PerfCounter counter : countersInNamespace(ns)) {
1.75 + String msg = "Expected " + counter.getName() + " to equal 0";
1.76 + assertEQ(counter.longValue(), 0L, msg);
1.77 + }
1.78 + }
1.79 +
1.80 + private static void checkUsedIncreasesWhenLoadingClass(String ns) throws Exception {
1.81 + PerfCounter used = PerfCounters.findByName(ns + ".used");
1.82 +
1.83 + long before = used.longValue();
1.84 + fooClass = compileAndLoad("Foo", "public class Foo { }");
1.85 + System.gc();
1.86 + long after = used.longValue();
1.87 +
1.88 + assertGT(after, before);
1.89 + }
1.90 +
1.91 + private static List<PerfCounter> countersInNamespace(String ns) throws Exception {
1.92 + List<PerfCounter> counters = new ArrayList<>();
1.93 + for (String name : counterNames) {
1.94 + counters.add(PerfCounters.findByName(ns + "." + name));
1.95 + }
1.96 + return counters;
1.97 + }
1.98 +
1.99 + private static Class<?> compileAndLoad(String name, String source) throws Exception {
1.100 + byte[] byteCode = InMemoryJavaCompiler.compile(name, source);
1.101 + return ByteCodeLoader.load(name, byteCode);
1.102 + }
1.103 +
1.104 + private static boolean isUsingCompressedClassPointers() {
1.105 + return Platform.is64bit() && InputArguments.contains("-XX:+UseCompressedKlassPointers");
1.106 + }
1.107 +}
