Wed, 21 May 2014 10:56:41 -0700
Added tag jdk8u20-b15 for changeset 8c785f9bde6f
1 /*
2 * Copyright (c) 2013, 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 * @run main ClassFileInstaller sun.hotspot.WhiteBox
31 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:NativeMemoryTracking=summary -XX:+WhiteBoxAPI SummarySanityCheck
32 */
34 import com.oracle.java.testlibrary.*;
36 import java.util.regex.Matcher;
37 import java.util.regex.Pattern;
38 import sun.hotspot.WhiteBox;
40 public class SummarySanityCheck {
42 private static String jcmdout;
43 public static void main(String args[]) throws Exception {
44 // Grab my own PID
45 String pid = Integer.toString(ProcessTools.getProcessId());
47 // Use WB API to ensure that all data has been merged before we continue
48 if (!WhiteBox.getWhiteBox().NMTWaitForDataMerge()) {
49 throw new Exception("Call to WB API NMTWaitForDataMerge() failed");
50 }
52 ProcessBuilder pb = new ProcessBuilder();
54 // Run 'jcmd <pid> VM.native_memory summary scale=KB'
55 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary", "scale=KB"});
56 OutputAnalyzer output = new OutputAnalyzer(pb.start());
58 jcmdout = output.getOutput();
59 // Split by '-' to get the 'groups'
60 String[] lines = jcmdout.split("\n");
62 if (lines.length == 0) {
63 throwTestException("Failed to parse jcmd output");
64 }
66 int totalCommitted = 0, totalReserved = 0;
67 int totalCommittedSum = 0, totalReservedSum = 0;
69 // Match '- <mtType> (reserved=<reserved>KB, committed=<committed>KB)
70 Pattern mtTypePattern = Pattern.compile("-\\s+(?<typename>[\\w\\s]+)\\(reserved=(?<reserved>\\d+)KB,\\scommitted=(?<committed>\\d+)KB\\)");
71 // Match 'Total: reserved=<reserved>KB, committed=<committed>KB'
72 Pattern totalMemoryPattern = Pattern.compile("Total\\:\\s\\sreserved=(?<reserved>\\d+)KB,\\s\\scommitted=(?<committed>\\d+)KB");
74 for (int i = 0; i < lines.length; i++) {
75 if (lines[i].startsWith("Total")) {
76 Matcher totalMemoryMatcher = totalMemoryPattern.matcher(lines[i]);
78 if (totalMemoryMatcher.matches() && totalMemoryMatcher.groupCount() == 2) {
79 totalCommitted = Integer.parseInt(totalMemoryMatcher.group("committed"));
80 totalReserved = Integer.parseInt(totalMemoryMatcher.group("reserved"));
81 } else {
82 throwTestException("Failed to match the expected groups in 'Total' memory part");
83 }
84 } else if (lines[i].startsWith("-")) {
85 Matcher typeMatcher = mtTypePattern.matcher(lines[i]);
86 if (typeMatcher.matches()) {
87 int typeCommitted = Integer.parseInt(typeMatcher.group("committed"));
88 int typeReserved = Integer.parseInt(typeMatcher.group("reserved"));
90 // Make sure reserved is always less or equals
91 if (typeCommitted > typeReserved) {
92 throwTestException("Committed (" + typeCommitted + ") was more than Reserved ("
93 + typeReserved + ") for mtType: " + typeMatcher.group("typename"));
94 }
96 // Add to total and compare them in the end
97 totalCommittedSum += typeCommitted;
98 totalReservedSum += typeReserved;
99 } else {
100 throwTestException("Failed to match the group on line " + i);
101 }
102 }
103 }
105 // See if they add up correctly, rounding is a problem so make sure we're within +/- 8KB
106 int committedDiff = totalCommitted - totalCommittedSum;
107 if (committedDiff > 8 || committedDiff < -8) {
108 throwTestException("Total committed (" + totalCommitted + ") did not match the summarized committed (" + totalCommittedSum + ")" );
109 }
111 int reservedDiff = totalReserved - totalReservedSum;
112 if (reservedDiff > 8 || reservedDiff < -8) {
113 throwTestException("Total reserved (" + totalReserved + ") did not match the summarized reserved (" + totalReservedSum + ")" );
114 }
115 }
117 private static void throwTestException(String reason) throws Exception {
118 throw new Exception(reason + " . Stdout is :\n" + jcmdout);
119 }
120 }