Mercurial > jdk8-mips64-public > hotspot / file revision

 /*

  * Copyright (c) 2014, 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.

  *

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

  * or visit www.oracle.com if you need additional information or have any

  * questions.

  */

 /*

  * @test

  * @summary Test consistency of NMT by creating allocations of the Test type with various sizes and verifying visibility with jcmd

  * @key nmt jcmd

  * @library /testlibrary /testlibrary/whitebox

  * @build MallocRoundingReportTest

  * @run main ClassFileInstaller sun.hotspot.WhiteBox

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

  *

  */

 import com.oracle.java.testlibrary.*;

 import sun.hotspot.WhiteBox;

 public class MallocRoundingReportTest {

     private static long K = 1024;

     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();

         long[] additionalBytes = {0, 1, 512, 650};

         long[] kByteSize = {1024, 2048};

         long mallocd_total = 0;

         for ( int i = 0; i < kByteSize.length; i++)

         {

             for (int j = 0; j < (additionalBytes.length); j++) {

                 long curKB = kByteSize[i] + additionalBytes[j];

                 // round up/down to the nearest KB to match NMT reporting

                 long numKB = (curKB % kByteSize[i] >= 512) ? ((curKB / K) + 1) : curKB / K;

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

                 mallocd_total = wb.NMTMalloc(curKB);

                 // Run 'jcmd <pid> VM.native_memory summary', check for expected output

                 // NMT does not track memory allocations less than 1KB, and rounds to the nearest KB

                 String expectedOut = ("Test (reserved=" + numKB + "KB, committed=" + numKB + "KB)");

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

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

                 output.shouldContain(expectedOut);

                 wb.NMTFree(mallocd_total);

                 // Run 'jcmd <pid> VM.native_memory summary', check for expected output

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

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

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

             }

         }

     }

 }