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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

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 *

 * 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

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 *

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 * 2 along with this work; if not, write to the Free Software Foundation,

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/*

 * @test

 * @summary Test consistency of NMT by leaking a few select allocations of the Test type and then verify visibility with jcmd

 * @key nmt jcmd

 * @library /testlibrary /testlibrary/whitebox

 * @build MallocTestType

 * @run main ClassFileInstaller sun.hotspot.WhiteBox

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

 */

import com.oracle.java.testlibrary.*;

import sun.hotspot.WhiteBox;

public class MallocTestType {

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

    OutputAnalyzer output;

    WhiteBox wb = WhiteBox.getWhiteBox();

    // Grab my own PID

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

    ProcessBuilder pb = new ProcessBuilder();

    // Use WB API to alloc and free with the mtTest type

    long memAlloc3 = wb.NMTMalloc(128 * 1024);

    long memAlloc2 = wb.NMTMalloc(256 * 1024);

    wb.NMTFree(memAlloc3);

    long memAlloc1 = wb.NMTMalloc(512 * 1024);

    wb.NMTFree(memAlloc2);

    // 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=512KB, committed=512KB)");

    // Free the memory allocated by NMTAllocTest

    wb.NMTFree(memAlloc1);

    // 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=");

  }

}