aoqi@0: /*
aoqi@0:  * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: /*
aoqi@0:  * @test
aoqi@0:  * @key nmt jcmd
aoqi@0:  * @summary Sanity check the output of NMT
aoqi@0:  * @library /testlibrary /testlibrary/whitebox
aoqi@0:  * @build SummarySanityCheck
aoqi@0:  * @run main ClassFileInstaller sun.hotspot.WhiteBox
aoqi@0:  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:NativeMemoryTracking=summary -XX:+WhiteBoxAPI SummarySanityCheck
aoqi@0:  */
aoqi@0: 
aoqi@0: import com.oracle.java.testlibrary.*;
aoqi@0: 
aoqi@0: import java.util.regex.Matcher;
aoqi@0: import java.util.regex.Pattern;
aoqi@0: import sun.hotspot.WhiteBox;
aoqi@0: 
aoqi@0: public class SummarySanityCheck {
aoqi@0: 
aoqi@0:   private static String jcmdout;
aoqi@0:   public static void main(String args[]) throws Exception {
aoqi@0:     // Grab my own PID
aoqi@0:     String pid = Integer.toString(ProcessTools.getProcessId());
aoqi@0: 
aoqi@0:     // Use WB API to ensure that all data has been merged before we continue
aoqi@0:     if (!WhiteBox.getWhiteBox().NMTWaitForDataMerge()) {
aoqi@0:       throw new Exception("Call to WB API NMTWaitForDataMerge() failed");
aoqi@0:     }
aoqi@0: 
aoqi@0:     ProcessBuilder pb = new ProcessBuilder();
aoqi@0: 
aoqi@0:     // Run  'jcmd <pid> VM.native_memory summary scale=KB'
aoqi@0:     pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary", "scale=KB"});
aoqi@0:     OutputAnalyzer output = new OutputAnalyzer(pb.start());
aoqi@0: 
aoqi@0:     jcmdout = output.getOutput();
aoqi@0:     // Split by '-' to get the 'groups'
aoqi@0:     String[] lines = jcmdout.split("\n");
aoqi@0: 
aoqi@0:     if (lines.length == 0) {
aoqi@0:       throwTestException("Failed to parse jcmd output");
aoqi@0:     }
aoqi@0: 
aoqi@0:     int totalCommitted = 0, totalReserved = 0;
aoqi@0:     int totalCommittedSum = 0, totalReservedSum = 0;
aoqi@0: 
aoqi@0:     // Match '- <mtType> (reserved=<reserved>KB, committed=<committed>KB)
aoqi@0:     Pattern mtTypePattern = Pattern.compile("-\\s+(?<typename>[\\w\\s]+)\\(reserved=(?<reserved>\\d+)KB,\\scommitted=(?<committed>\\d+)KB\\)");
aoqi@0:     // Match 'Total: reserved=<reserved>KB, committed=<committed>KB'
aoqi@0:     Pattern totalMemoryPattern = Pattern.compile("Total\\:\\s\\sreserved=(?<reserved>\\d+)KB,\\s\\scommitted=(?<committed>\\d+)KB");
aoqi@0: 
aoqi@0:     for (int i = 0; i < lines.length; i++) {
aoqi@0:       if (lines[i].startsWith("Total")) {
aoqi@0:         Matcher totalMemoryMatcher = totalMemoryPattern.matcher(lines[i]);
aoqi@0: 
aoqi@0:         if (totalMemoryMatcher.matches() && totalMemoryMatcher.groupCount() == 2) {
aoqi@0:           totalCommitted = Integer.parseInt(totalMemoryMatcher.group("committed"));
aoqi@0:           totalReserved = Integer.parseInt(totalMemoryMatcher.group("reserved"));
aoqi@0:         } else {
aoqi@0:           throwTestException("Failed to match the expected groups in 'Total' memory part");
aoqi@0:         }
aoqi@0:       } else if (lines[i].startsWith("-")) {
aoqi@0:         Matcher typeMatcher = mtTypePattern.matcher(lines[i]);
aoqi@0:         if (typeMatcher.matches()) {
aoqi@0:           int typeCommitted = Integer.parseInt(typeMatcher.group("committed"));
aoqi@0:           int typeReserved = Integer.parseInt(typeMatcher.group("reserved"));
aoqi@0: 
aoqi@0:           // Make sure reserved is always less or equals
aoqi@0:           if (typeCommitted > typeReserved) {
aoqi@0:             throwTestException("Committed (" + typeCommitted + ") was more than Reserved ("
aoqi@0:                 + typeReserved + ") for mtType: " + typeMatcher.group("typename"));
aoqi@0:           }
aoqi@0: 
aoqi@0:           // Add to total and compare them in the end
aoqi@0:           totalCommittedSum += typeCommitted;
aoqi@0:           totalReservedSum += typeReserved;
aoqi@0:         } else {
aoqi@0:           throwTestException("Failed to match the group on line " + i);
aoqi@0:         }
aoqi@0:       }
aoqi@0:     }
aoqi@0: 
aoqi@0:     // See if they add up correctly, rounding is a problem so make sure we're within +/- 8KB
aoqi@0:     int committedDiff = totalCommitted - totalCommittedSum;
aoqi@0:     if (committedDiff > 8 || committedDiff < -8) {
aoqi@0:       throwTestException("Total committed (" + totalCommitted + ") did not match the summarized committed (" + totalCommittedSum + ")" );
aoqi@0:     }
aoqi@0: 
aoqi@0:     int reservedDiff = totalReserved - totalReservedSum;
aoqi@0:     if (reservedDiff > 8 || reservedDiff < -8) {
aoqi@0:       throwTestException("Total reserved (" + totalReserved + ") did not match the summarized reserved (" + totalReservedSum + ")" );
aoqi@0:     }
aoqi@0:   }
aoqi@0: 
aoqi@0:   private static void throwTestException(String reason) throws Exception {
aoqi@0:       throw new Exception(reason + " . Stdout is :\n" + jcmdout);
aoqi@0:   }
aoqi@0: }