Mercurial > hg > graal-compiler
diff test/gc/metaspace/TestMetaspacePerfCounters.java @ 12063:1a8fb39bdbc4
8014659: NPG: performance counters for compressed klass space
Reviewed-by: mgerdin, coleenp, hseigel, jmasa, ctornqvi
author | ehelin |
---|---|
date | Wed, 07 Aug 2013 16:47:32 +0200 |
parents | |
children | 7944aba7ba41 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/gc/metaspace/TestMetaspacePerfCounters.java Wed Aug 07 16:47:32 2013 +0200 @@ -0,0 +1,104 @@ +/* + * 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.util.ArrayList; + +import com.oracle.java.testlibrary.*; +import static com.oracle.java.testlibrary.Asserts.*; + +/* @test TestMetaspacePerfCounters + * @bug 8014659 + * @library /testlibrary + * @summary Tests that performance counters for metaspace and compressed class + * space exists and works. + * + * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:-UseCompressedKlassPointers -XX:+UsePerfData -XX:+UseSerialGC TestMetaspacePerfCounters + * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:-UseCompressedKlassPointers -XX:+UsePerfData -XX:+UseParallelGC -XX:+UseParallelOldGC TestMetaspacePerfCounters + * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseCompressedOops -XX:-UseCompressedKlassPointers -XX:+UsePerfData -XX:+UseG1GC TestMetaspacePerfCounters + * + * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedKlassPointers -XX:+UsePerfData -XX:+UseSerialGC TestMetaspacePerfCounters + * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedKlassPointers -XX:+UsePerfData -XX:+UseParallelGC -XX:+UseParallelOldGC TestMetaspacePerfCounters + * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+UseCompressedOops -XX:+UseCompressedKlassPointers -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 { + for (PerfCounter counter : countersInNamespace(ns)) { + String msg = "Expected " + counter.getName() + " to be larger than 0"; + assertGT(counter.longValue(), 0L, msg); + } + } + + 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 { + PerfCounter used = PerfCounters.findByName(ns + ".used"); + + long before = used.longValue(); + fooClass = compileAndLoad("Foo", "public class Foo { }"); + System.gc(); + long after = used.longValue(); + + 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:+UseCompressedKlassPointers"); + } +}