| /* |
| * Copyright (c) 2013, 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 |
| * @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()); |
| |
| 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\\:\\sreserved=(?<reserved>\\d+)KB,\\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()) { |
| 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); |
| } |
| } |