/*

 * Copyright (c) 2014, 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

 * @summary run NMT baseline, allocate memory and verify output from summary.diff

 * @key nmt jcmd

 * @library /testlibrary /test/lib

 * @modules java.base/sun.misc

 *          java.management

 * @build JcmdSummaryDiff

 * @run main ClassFileInstaller sun.hotspot.WhiteBox

 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=summary JcmdSummaryDiff

 */

import jdk.test.lib.*;

import sun.hotspot.WhiteBox;

public class JcmdSummaryDiff {

    public static WhiteBox wb = WhiteBox.getWhiteBox();

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

        ProcessBuilder pb = new ProcessBuilder();

        OutputAnalyzer output;

        // Grab my own PID

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

        long commitSize = 128 * 1024;

        long reserveSize = 256 * 1024;

        long addr;

        // Run 'jcmd <pid> VM.native_memory baseline=true'

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

        pb.start().waitFor();

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

        output.shouldContain("Baseline succeeded");

        addr = wb.NMTReserveMemory(reserveSize);

        pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary.diff", "scale=KB"});

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

        output.shouldContain("Test (reserved=256KB +256KB, committed=0KB)");

        wb.NMTCommitMemory(addr, commitSize);

        pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary.diff", "scale=KB"});

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

        output.shouldContain("Test (reserved=256KB +256KB, committed=128KB +128KB)");

        wb.NMTUncommitMemory(addr, commitSize);

        pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary.diff", "scale=KB"});

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

        output.shouldContain("Test (reserved=256KB +256KB, committed=0KB)");

        wb.NMTReleaseMemory(addr, reserveSize);

        pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary.diff", "scale=KB"});

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

        output.shouldNotContain("Test (reserved=");

    }

}