Wed, 27 Aug 2014 08:35:03 -0400
8044140: Create NMT (Native Memory Tracking) tests for NMT2
Summary: Create new/modify existing tests for NMT2, which is an internal redesign to address scalability issues in the first implementation.
Reviewed-by: ctornqvi, zgu
Contributed-by: George Triantafillou <george.triantafillou@oracle.com>
1 /*
2 * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
24 /*
25 * @test
26 * @key nmt jcmd
27 * @summary Sanity check the output of NMT
28 * @library /testlibrary /testlibrary/whitebox
29 * @build SummarySanityCheck
30 * @ignore
31 * @run main ClassFileInstaller sun.hotspot.WhiteBox
32 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:NativeMemoryTracking=summary -XX:+WhiteBoxAPI SummarySanityCheck
33 */
35 import com.oracle.java.testlibrary.*;
37 import java.util.regex.Matcher;
38 import java.util.regex.Pattern;
39 import sun.hotspot.WhiteBox;
41 public class SummarySanityCheck {
43 private static String jcmdout;
44 public static void main(String args[]) throws Exception {
45 // Grab my own PID
46 String pid = Integer.toString(ProcessTools.getProcessId());
48 ProcessBuilder pb = new ProcessBuilder();
50 // Run 'jcmd <pid> VM.native_memory summary scale=KB'
51 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary", "scale=KB"});
52 OutputAnalyzer output = new OutputAnalyzer(pb.start());
54 jcmdout = output.getOutput();
55 // Split by '-' to get the 'groups'
56 String[] lines = jcmdout.split("\n");
58 if (lines.length == 0) {
59 throwTestException("Failed to parse jcmd output");
60 }
62 int totalCommitted = 0, totalReserved = 0;
63 int totalCommittedSum = 0, totalReservedSum = 0;
65 // Match '- <mtType> (reserved=<reserved>KB, committed=<committed>KB)
66 Pattern mtTypePattern = Pattern.compile("-\\s+(?<typename>[\\w\\s]+)\\(reserved=(?<reserved>\\d+)KB,\\scommitted=(?<committed>\\d+)KB\\)");
67 // Match 'Total: reserved=<reserved>KB, committed=<committed>KB'
68 Pattern totalMemoryPattern = Pattern.compile("Total\\:\\sreserved=(?<reserved>\\d+)KB,\\scommitted=(?<committed>\\d+)KB");
70 for (int i = 0; i < lines.length; i++) {
71 if (lines[i].startsWith("Total")) {
72 Matcher totalMemoryMatcher = totalMemoryPattern.matcher(lines[i]);
74 if (totalMemoryMatcher.matches()) {
75 totalCommitted = Integer.parseInt(totalMemoryMatcher.group("committed"));
76 totalReserved = Integer.parseInt(totalMemoryMatcher.group("reserved"));
77 } else {
78 throwTestException("Failed to match the expected groups in 'Total' memory part");
79 }
80 } else if (lines[i].startsWith("-")) {
81 Matcher typeMatcher = mtTypePattern.matcher(lines[i]);
82 if (typeMatcher.matches()) {
83 int typeCommitted = Integer.parseInt(typeMatcher.group("committed"));
84 int typeReserved = Integer.parseInt(typeMatcher.group("reserved"));
86 // Make sure reserved is always less or equals
87 if (typeCommitted > typeReserved) {
88 throwTestException("Committed (" + typeCommitted + ") was more than Reserved ("
89 + typeReserved + ") for mtType: " + typeMatcher.group("typename"));
90 }
92 // Add to total and compare them in the end
93 totalCommittedSum += typeCommitted;
94 totalReservedSum += typeReserved;
95 } else {
96 throwTestException("Failed to match the group on line " + i);
97 }
98 }
99 }
101 // See if they add up correctly, rounding is a problem so make sure we're within +/- 8KB
102 int committedDiff = totalCommitted - totalCommittedSum;
103 if (committedDiff > 8 || committedDiff < -8) {
104 throwTestException("Total committed (" + totalCommitted + ") did not match the summarized committed (" + totalCommittedSum + ")" );
105 }
107 int reservedDiff = totalReserved - totalReservedSum;
108 if (reservedDiff > 8 || reservedDiff < -8) {
109 throwTestException("Total reserved (" + totalReserved + ") did not match the summarized reserved (" + totalReservedSum + ")" );
110 }
111 }
113 private static void throwTestException(String reason) throws Exception {
114 throw new Exception(reason + " . Stdout is :\n" + jcmdout);
115 }
116 }