/*

 * Copyright (c) 2013, 2015, 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.

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 */

/*

 * @test

 * @key nmt jcmd

 * @summary Run shutdown twice

 * @library /testlibrary

 * @modules java.base/sun.misc

 *          java.management

 * @run main/othervm -XX:NativeMemoryTracking=detail ShutdownTwice

 */

import jdk.test.lib.*;

public class ShutdownTwice {

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

    // Grab my own PID

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

    OutputAnalyzer output;

    ProcessBuilder pb = new ProcessBuilder();

    // Run 'jcmd <pid> VM.native_memory shutdown'

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

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

    // Verify that jcmd reports that NMT is shutting down

    output.shouldContain("Native memory tracking has been turned off");

    // Run shutdown again

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

    // Verify that jcmd reports that NMT has been shutdown already

    output.shouldContain("Native memory tracking has been shutdown");

  }

}