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

 /*

  * 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.

  *

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

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

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  */

 /*

  * @test

  * @key nmt jcmd

  * @summary Sanity check the output of NMT

  * @library /testlibrary /testlibrary/whitebox

  * @build SummarySanityCheck

  * @run main ClassFileInstaller sun.hotspot.WhiteBox

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

  */

 import com.oracle.java.testlibrary.*;

 import java.util.regex.Matcher;

 import java.util.regex.Pattern;

 import sun.hotspot.WhiteBox;

 public class SummarySanityCheck {

   private static String jcmdout;

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

     // Grab my own PID

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

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

     if (!WhiteBox.getWhiteBox().NMTWaitForDataMerge()) {

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

     }

     ProcessBuilder pb = new ProcessBuilder();

     // Run  'jcmd <pid> VM.native_memory summary scale=KB'

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

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

     jcmdout = output.getOutput();

     // Split by '-' to get the 'groups'

     String[] lines = jcmdout.split("\n");

     if (lines.length == 0) {

       throwTestException("Failed to parse jcmd output");

     }

     int totalCommitted = 0, totalReserved = 0;

     int totalCommittedSum = 0, totalReservedSum = 0;

     // Match '- <mtType> (reserved=<reserved>KB, committed=<committed>KB)

     Pattern mtTypePattern = Pattern.compile("-\\s+(?<typename>[\\w\\s]+)\\(reserved=(?<reserved>\\d+)KB,\\scommitted=(?<committed>\\d+)KB\\)");

     // Match 'Total: reserved=<reserved>KB, committed=<committed>KB'

     Pattern totalMemoryPattern = Pattern.compile("Total\\:\\s\\sreserved=(?<reserved>\\d+)KB,\\s\\scommitted=(?<committed>\\d+)KB");

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

       if (lines[i].startsWith("Total")) {

         Matcher totalMemoryMatcher = totalMemoryPattern.matcher(lines[i]);

         if (totalMemoryMatcher.matches() && totalMemoryMatcher.groupCount() == 2) {

           totalCommitted = Integer.parseInt(totalMemoryMatcher.group("committed"));

           totalReserved = Integer.parseInt(totalMemoryMatcher.group("reserved"));

         } else {

           throwTestException("Failed to match the expected groups in 'Total' memory part");

         }

       } else if (lines[i].startsWith("-")) {

         Matcher typeMatcher = mtTypePattern.matcher(lines[i]);

         if (typeMatcher.matches()) {

           int typeCommitted = Integer.parseInt(typeMatcher.group("committed"));

           int typeReserved = Integer.parseInt(typeMatcher.group("reserved"));

           // Make sure reserved is always less or equals

           if (typeCommitted > typeReserved) {

             throwTestException("Committed (" + typeCommitted + ") was more than Reserved ("

                 + typeReserved + ") for mtType: " + typeMatcher.group("typename"));

           }

           // Add to total and compare them in the end

           totalCommittedSum += typeCommitted;

           totalReservedSum += typeReserved;

         } else {

           throwTestException("Failed to match the group on line " + i);

         }

       }

     }

     // See if they add up correctly, rounding is a problem so make sure we're within +/- 8KB

     int committedDiff = totalCommitted - totalCommittedSum;

     if (committedDiff > 8 || committedDiff < -8) {

       throwTestException("Total committed (" + totalCommitted + ") did not match the summarized committed (" + totalCommittedSum + ")" );

     }

     int reservedDiff = totalReserved - totalReservedSum;

     if (reservedDiff > 8 || reservedDiff < -8) {

       throwTestException("Total reserved (" + totalReserved + ") did not match the summarized reserved (" + totalReservedSum + ")" );

     }

   }

   private static void throwTestException(String reason) throws Exception {

       throw new Exception(reason + " . Stdout is :\n" + jcmdout);

   }

 }