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1 /* |
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2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 |
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24 /* |
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25 * @test |
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26 * @key nmt jcmd |
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27 * @summary Sanity check the output of NMT |
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28 * @library /testlibrary |
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29 * @run compile -J-XX:+UnlockDiagnosticVMOptions -J-XX:+WhiteBoxAPI SummarySanityCheck.java |
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30 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:NativeMemoryTracking=summary -XX:+WhiteBoxAPI SummarySanityCheck |
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31 */ |
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32 |
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33 import com.oracle.java.testlibrary.*; |
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34 |
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35 import java.util.regex.Matcher; |
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36 import java.util.regex.Pattern; |
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37 import sun.hotspot.WhiteBox; |
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38 |
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39 public class SummarySanityCheck { |
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40 |
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41 private static String jcmdout; |
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42 public static void main(String args[]) throws Exception { |
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43 // Grab my own PID |
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44 String pid = Integer.toString(ProcessTools.getProcessId()); |
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45 |
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46 // Use WB API to ensure that all data has been merged before we continue |
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47 if (!WhiteBox.getWhiteBox().NMTWaitForDataMerge()) { |
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48 throw new Exception("Call to WB API NMTWaitForDataMerge() failed"); |
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49 } |
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50 |
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51 ProcessBuilder pb = new ProcessBuilder(); |
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52 |
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53 // Run 'jcmd <pid> VM.native_memory summary scale=KB' |
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54 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary", "scale=KB"}); |
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55 OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
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56 |
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57 jcmdout = output.getOutput(); |
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58 // Split by '-' to get the 'groups' |
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59 String[] lines = jcmdout.split("\n"); |
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60 |
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61 if (lines.length == 0) { |
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62 throwTestException("Failed to parse jcmd output"); |
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63 } |
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64 |
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65 int totalCommitted = 0, totalReserved = 0; |
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66 int totalCommittedSum = 0, totalReservedSum = 0; |
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67 |
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68 // Match '- <mtType> (reserved=<reserved>KB, committed=<committed>KB) |
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69 Pattern mtTypePattern = Pattern.compile("-\\s+(?<typename>[\\w\\s]+)\\(reserved=(?<reserved>\\d+)KB,\\scommitted=(?<committed>\\d+)KB\\)"); |
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70 // Match 'Total: reserved=<reserved>KB, committed=<committed>KB' |
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71 Pattern totalMemoryPattern = Pattern.compile("Total\\:\\s\\sreserved=(?<reserved>\\d+)KB,\\s\\scommitted=(?<committed>\\d+)KB"); |
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72 |
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73 for (int i = 0; i < lines.length; i++) { |
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74 if (lines[i].startsWith("Total")) { |
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75 Matcher totalMemoryMatcher = totalMemoryPattern.matcher(lines[i]); |
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76 |
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77 if (totalMemoryMatcher.matches() && totalMemoryMatcher.groupCount() == 2) { |
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78 totalCommitted = Integer.parseInt(totalMemoryMatcher.group("committed")); |
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79 totalReserved = Integer.parseInt(totalMemoryMatcher.group("reserved")); |
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80 } else { |
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81 throwTestException("Failed to match the expected groups in 'Total' memory part"); |
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82 } |
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83 } else if (lines[i].startsWith("-")) { |
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84 Matcher typeMatcher = mtTypePattern.matcher(lines[i]); |
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85 if (typeMatcher.matches()) { |
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86 int typeCommitted = Integer.parseInt(typeMatcher.group("committed")); |
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87 int typeReserved = Integer.parseInt(typeMatcher.group("reserved")); |
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88 |
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89 // Make sure reserved is always less or equals |
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90 if (typeCommitted > typeReserved) { |
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91 throwTestException("Committed (" + typeCommitted + ") was more than Reserved (" |
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92 + typeReserved + ") for mtType: " + typeMatcher.group("typename")); |
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93 } |
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94 |
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95 // Add to total and compare them in the end |
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96 totalCommittedSum += typeCommitted; |
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97 totalReservedSum += typeReserved; |
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98 } else { |
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99 throwTestException("Failed to match the group on line " + i); |
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100 } |
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101 } |
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102 } |
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103 |
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104 // See if they add up correctly, rounding is a problem so make sure we're within +/- 8KB |
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105 int committedDiff = totalCommitted - totalCommittedSum; |
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106 if (committedDiff > 8 || committedDiff < -8) { |
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107 throwTestException("Total committed (" + totalCommitted + ") did not match the summarized committed (" + totalCommittedSum + ")" ); |
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108 } |
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109 |
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110 int reservedDiff = totalReserved - totalReservedSum; |
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111 if (reservedDiff > 8 || reservedDiff < -8) { |
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112 throwTestException("Total reserved (" + totalReserved + ") did not match the summarized reserved (" + totalReservedSum + ")" ); |
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113 } |
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114 } |
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115 |
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116 private static void throwTestException(String reason) throws Exception { |
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117 throw new Exception(reason + " . Stdout is :\n" + jcmdout); |
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118 } |
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119 } |