129 lines
5.5 KiB
Java
129 lines
5.5 KiB
Java
/*
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* Copyright (c) 2013, 2022, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @summary Sanity check the output of NMT
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* @library /test/lib
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* @modules java.base/jdk.internal.misc
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* java.management
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* @build jdk.test.whitebox.WhiteBox
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* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
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* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:NativeMemoryTracking=summary -XX:+WhiteBoxAPI SummarySanityCheck
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*/
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import jdk.test.lib.process.ProcessTools;
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.JDKToolFinder;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import jdk.test.whitebox.WhiteBox;
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public class SummarySanityCheck {
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private static String jcmdout;
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public static void main(String args[]) throws Exception {
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// Grab my own PID
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String pid = Long.toString(ProcessTools.getProcessId());
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ProcessBuilder pb = new ProcessBuilder();
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// Run 'jcmd <pid> VM.native_memory summary scale=KB'
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pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary", "scale=KB"});
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OutputAnalyzer output = new OutputAnalyzer(pb.start());
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jcmdout = output.getOutput();
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// Split by '-' to get the 'groups'
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String[] lines = jcmdout.split("\n");
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if (lines.length == 0) {
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throwTestException("Failed to parse jcmd output");
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}
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long totalCommitted = 0, totalReserved = 0;
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long totalCommittedSum = 0, totalReservedSum = 0;
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// Match '- <mtType> (reserved=<reserved>KB, committed=<committed>KB) and some times readonly=<readonly>KB
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Pattern mtTypePattern = Pattern.compile("-\\s+(?<typename>[\\w\\s]+)\\(reserved=(?<reserved>\\d+)KB,\\scommitted=(?<committed>\\d+)KB((,\\sreadonly=(?<readonly>\\d+)KB)|)\\)");
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// Match 'Total: reserved=<reserved>KB, committed=<committed>KB'
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Pattern totalMemoryPattern = Pattern.compile("Total\\:\\sreserved=(?<reserved>\\d+)KB,\\scommitted=(?<committed>\\d+)KB");
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for (int i = 0; i < lines.length; i++) {
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if (lines[i].startsWith("Total")) {
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Matcher totalMemoryMatcher = totalMemoryPattern.matcher(lines[i]);
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if (totalMemoryMatcher.matches()) {
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totalCommitted = Long.parseLong(totalMemoryMatcher.group("committed"));
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totalReserved = Long.parseLong(totalMemoryMatcher.group("reserved"));
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} else {
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throwTestException("Failed to match the expected groups in 'Total' memory part");
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}
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} else if (lines[i].startsWith("-")) {
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Matcher typeMatcher = mtTypePattern.matcher(lines[i]);
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if (typeMatcher.matches()) {
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long typeCommitted = Long.parseLong(typeMatcher.group("committed"));
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long typeReserved = Long.parseLong(typeMatcher.group("reserved"));
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// Only Shared class space has readonly component
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if (lines[i].contains("Shared class space") && typeMatcher.group("readonly") != null) {
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long typeReadOnly = Long.parseLong(typeMatcher.group("readonly"));
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// Make sure readonly is always less or equal to committed
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if (typeReadOnly > typeCommitted) {
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throwTestException("Readonly (" + typeReadOnly + ") was more than Committed ("
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+ typeCommitted + ") for mtType: " + typeMatcher.group("typename"));
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}
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}
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// Make sure reserved is always less or equals
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if (typeCommitted > typeReserved) {
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throwTestException("Committed (" + typeCommitted + ") was more than Reserved ("
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+ typeReserved + ") for mtType: " + typeMatcher.group("typename"));
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}
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// Add to total and compare them in the end
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totalCommittedSum += typeCommitted;
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totalReservedSum += typeReserved;
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} else {
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throwTestException("Failed to match the group on line " + i);
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}
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}
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}
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// See if they add up correctly, rounding is a problem so make sure we're within +/- 8KB
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long committedDiff = totalCommitted - totalCommittedSum;
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if (committedDiff > 8 || committedDiff < -8) {
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throwTestException("Total committed (" + totalCommitted + ") did not match the summarized committed (" + totalCommittedSum + ")" );
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}
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long reservedDiff = totalReserved - totalReservedSum;
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if (reservedDiff > 8 || reservedDiff < -8) {
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throwTestException("Total reserved (" + totalReserved + ") did not match the summarized reserved (" + totalReservedSum + ")" );
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}
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}
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private static void throwTestException(String reason) throws Exception {
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throw new Exception(reason + " . Stdout is :\n" + jcmdout);
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}
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}
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