/*

 * 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

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 */

import java.util.List;

import java.lang.management.*;

import com.oracle.java.testlibrary.*;

import static com.oracle.java.testlibrary.Asserts.*;

/* @test TestPerfCountersAndMemoryPools

 * @bug 8023476

 * @summary Tests that a MemoryPoolMXBeans and PerfCounters for metaspace

 *          report the same data.

 */

public class TestPerfCountersAndMemoryPools {

    public static void main(String[] args) throws Exception {

        checkMemoryUsage("Metaspace", "sun.gc.metaspace");

        if (InputArguments.contains("-XX:+UseCompressedKlassPointers") && Platform.is64bit()) {

            checkMemoryUsage("Compressed Class Space", "sun.gc.compressedclassspace");

        }

    }

        List<MemoryPoolMXBean> pools = ManagementFactory.getMemoryPoolMXBeans();

        for (MemoryPoolMXBean pool : pools) {

            if (pool.getName().equals(memoryPoolName)) {

            }

        }

        throw new RuntimeException("Excpted to find a memory pool with name " +

                                   memoryPoolName);

    }

    private static void checkMemoryUsage(String memoryPoolName, String perfNS)

        throws Exception {

        System.gc();

        System.gc();

    }

    private static long getMinCapacity(String ns) throws Exception {

        return PerfCounters.findByName(ns + ".minCapacity").longValue();

    }

    private static long getCapacity(String ns) throws Exception {

        return PerfCounters.findByName(ns + ".capacity").longValue();

    }

    private static long getUsed(String ns) throws Exception {

        return PerfCounters.findByName(ns + ".used").longValue();

    }

}