--- /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");
+    }
+}