/*

 * 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.

 *

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 */

/*

 * @test

 * @key nmt jcmd

 * @library /testlibrary /testlibrary/whitebox

 * @build ThreadedMallocTestType

 * @run main ClassFileInstaller sun.hotspot.WhiteBox

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

 */

import com.oracle.java.testlibrary.*;

import sun.hotspot.WhiteBox;

public class ThreadedMallocTestType {

  public static long memAlloc1;

  public static long memAlloc2;

  public static long memAlloc3;

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

    OutputAnalyzer output;

    final WhiteBox wb = WhiteBox.getWhiteBox();

    // Grab my own PID

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

    ProcessBuilder pb = new ProcessBuilder();

    Thread allocThread = new Thread() {

      public void run() {

        // Alloc memory using the WB api

        memAlloc1 = wb.NMTMalloc(128 * 1024);

        memAlloc2 = wb.NMTMalloc(256 * 1024);

        memAlloc3 = wb.NMTMalloc(512 * 1024);

      }

    };

    allocThread.start();

    allocThread.join();

    // Use WB API to ensure that all data has been merged before we continue

    if (!wb.NMTWaitForDataMerge()) {

      throw new Exception("Call to WB API NMTWaitForDataMerge() failed");

    }

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

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

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

    output.shouldContain("Test (reserved=896KB, committed=896KB)");

    Thread freeThread = new Thread() {

      public void run() {

        // Free the memory allocated by NMTMalloc

        wb.NMTFree(memAlloc1);

        wb.NMTFree(memAlloc2);

        wb.NMTFree(memAlloc3);

      }

    };

    freeThread.start();

    freeThread.join();

    // Use WB API to ensure that all data has been merged before we continue

    if (!wb.NMTWaitForDataMerge()) {

      throw new Exception("Call to WB API NMTWaitForDataMerge() failed");

    }

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

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

  }

}