jdk8-mips64-public/hotspot: test/gc/metaspace/TestMetaspacePerfCounters.java@1a8fb39bdbc4 (annotated)

test/gc/metaspace/TestMetaspacePerfCounters.java@1a8fb39bdbc4 (annotated)

test/gc/metaspace/TestMetaspacePerfCounters.java

Wed, 07 Aug 2013 16:47:32 +0200

author: ehelin
date: Wed, 07 Aug 2013 16:47:32 +0200
changeset 5531: 1a8fb39bdbc4
child 5694: 7944aba7ba41
permissions: -rw-r--r--

8014659: NPG: performance counters for compressed klass space
Reviewed-by: mgerdin, coleenp, hseigel, jmasa, ctornqvi

 /*
  * 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");
     }
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

test/gc/metaspace/TestMetaspacePerfCounters.java@1a8fb39bdbc4 (annotated)

test/gc/metaspace/TestMetaspacePerfCounters.java