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 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.

 * Copyright (c) 2018, SAP 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

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 * 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 jdk.test.lib.process.ProcessTools;

import jdk.test.lib.process.OutputAnalyzer;

import jdk.test.lib.JDKToolFinder;

/*

 * @test

 * @key metaspace jcmd

 * @summary Test the VM.metaspace command

 * @library /test/lib

 * @modules java.base/jdk.internal.misc

 *          java.management

 * @run main/othervm -XX:MaxMetaspaceSize=201M -Xmx100M -XX:+UseCompressedOops -XX:+UseCompressedClassPointers PrintMetaspaceDcmd with-compressed-class-space

 * @run main/othervm -XX:MaxMetaspaceSize=201M -Xmx100M -XX:-UseCompressedOops -XX:-UseCompressedClassPointers PrintMetaspaceDcmd without-compressed-class-space

 */

public class PrintMetaspaceDcmd {

    // Run jcmd VM.metaspace against a VM with CompressedClassPointers on.

    // The report should detail Non-Class and Class portions separately.

    private static void doTheTest(boolean usesCompressedClassSpace) throws Exception {

        ProcessBuilder pb = new ProcessBuilder();

        OutputAnalyzer output;

        // Grab my own PID

        String pid = Long.toString(ProcessTools.getProcessId());

        pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "basic"});

        output = new OutputAnalyzer(pb.start());

        output.shouldHaveExitValue(0);

        if (usesCompressedClassSpace) {

            output.shouldContain("Non-Class:");

            output.shouldContain("Class:");

        }

        output.shouldContain("Virtual space:");

        output.shouldContain("Chunk freelists:");

        pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace"});

        output = new OutputAnalyzer(pb.start());

        output.shouldHaveExitValue(0);

        if (usesCompressedClassSpace) {

            output.shouldContain("Non-Class:");

            output.shouldContain("Class:");

        }

        output.shouldContain("Virtual space:");

        output.shouldContain("Chunk freelist");

        output.shouldContain("Waste");

        output.shouldMatch("MaxMetaspaceSize:.*201.00.*MB");

        pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "show-loaders"});

        output = new OutputAnalyzer(pb.start());

        output.shouldHaveExitValue(0);

        output.shouldMatch("CLD.*<bootstrap>");

        pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "by-chunktype"});

        output = new OutputAnalyzer(pb.start());

        output.shouldHaveExitValue(0);

        output.shouldContain("specialized:");

        output.shouldContain("small:");

        output.shouldContain("medium:");

        output.shouldContain("humongous:");

        pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "vslist"});

        output = new OutputAnalyzer(pb.start());

        output.shouldHaveExitValue(0);

        output.shouldContain("Virtual space list");

        output.shouldMatch("node.*reserved.*committed.*used.*");

        pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "vsmap"});

        output = new OutputAnalyzer(pb.start());

        output.shouldHaveExitValue(0);

        output.shouldContain("Virtual space map:");

        output.shouldContain("HHHHHHHHHHH");

        // Test with different scales

        pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "scale=G"});

        output = new OutputAnalyzer(pb.start());

        output.shouldHaveExitValue(0);

        output.shouldMatch("MaxMetaspaceSize:.*0.2.*GB");

        pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "scale=K"});

        output = new OutputAnalyzer(pb.start());

        output.shouldHaveExitValue(0);

        output.shouldMatch("MaxMetaspaceSize:.*205824.00 KB");

        pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "scale=1"});

        output = new OutputAnalyzer(pb.start());

        output.shouldHaveExitValue(0);

        output.shouldMatch("MaxMetaspaceSize:.*210763776 bytes");

    }

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

        boolean testForCompressedClassSpace = false;

        if (args[0].equals("with-compressed-class-space")) {

            testForCompressedClassSpace = true;

        } else if (args[0].equals("without-compressed-class-space")) {

            testForCompressedClassSpace = false;

        } else {

            throw new IllegalArgumentException("Invalid argument: " + args[0]);

        }

        doTheTest(testForCompressedClassSpace);

    }

}