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annotate test/gc/arguments/TestUseCompressedOopsErgoTools.java @ 18408:2c3666f44855

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Truffle: initial commit of object API implementation
author Andreas Woess <andreas.woess@jku.at>
date Tue, 18 Nov 2014 23:19:43 +0100
parents 2f426063daea
children
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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 import sun.management.ManagementFactoryHelper;
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25 import com.sun.management.HotSpotDiagnosticMXBean;
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26 import com.sun.management.VMOption;
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27
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28 import java.util.regex.Matcher;
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29 import java.util.regex.Pattern;
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30 import java.util.ArrayList;
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31 import java.util.Arrays;
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32
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33 import com.oracle.java.testlibrary.*;
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34 import sun.hotspot.WhiteBox;
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35
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36 class DetermineMaxHeapForCompressedOops {
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37 public static void main(String[] args) throws Exception {
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38 WhiteBox wb = WhiteBox.getWhiteBox();
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39 System.out.print(wb.getCompressedOopsMaxHeapSize());
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40 }
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41 }
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42
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43 class TestUseCompressedOopsErgoTools {
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44
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45 private static long getCompressedClassSpaceSize() {
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46 HotSpotDiagnosticMXBean diagnostic = ManagementFactoryHelper.getDiagnosticMXBean();
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47
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48 VMOption option = diagnostic.getVMOption("CompressedClassSpaceSize");
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49 return Long.parseLong(option.getValue());
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50 }
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51
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52
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53 public static long getMaxHeapForCompressedOops(String[] vmargs) throws Exception {
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54 OutputAnalyzer output = runWhiteBoxTest(vmargs, DetermineMaxHeapForCompressedOops.class.getName(), new String[] {}, false);
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55 return Long.parseLong(output.getStdout());
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56 }
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57
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58 public static boolean is64bitVM() {
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59 String val = System.getProperty("sun.arch.data.model");
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60 if (val == null) {
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61 throw new RuntimeException("Could not read sun.arch.data.model");
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62 }
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63 if (val.equals("64")) {
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64 return true;
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65 } else if (val.equals("32")) {
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66 return false;
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67 }
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68 throw new RuntimeException("Unexpected value " + val + " of sun.arch.data.model");
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69 }
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70
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71 /**
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72 * Executes a new VM process with the given class and parameters.
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73 * @param vmargs Arguments to the VM to run
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74 * @param classname Name of the class to run
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75 * @param arguments Arguments to the class
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76 * @param useTestDotJavaDotOpts Use test.java.opts as part of the VM argument string
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77 * @return The OutputAnalyzer with the results for the invocation.
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78 */
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79 public static OutputAnalyzer runWhiteBoxTest(String[] vmargs, String classname, String[] arguments, boolean useTestDotJavaDotOpts) throws Exception {
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80 ArrayList<String> finalargs = new ArrayList<String>();
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81
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82 String[] whiteboxOpts = new String[] {
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83 "-Xbootclasspath/a:.",
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84 "-XX:+UnlockDiagnosticVMOptions", "-XX:+WhiteBoxAPI",
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85 "-cp", System.getProperty("java.class.path"),
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86 };
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87
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88 if (useTestDotJavaDotOpts) {
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89 // System.getProperty("test.java.opts") is '' if no options is set,
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90 // we need to skip such a result
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91 String[] externalVMOpts = new String[0];
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92 if (System.getProperty("test.java.opts") != null && System.getProperty("test.java.opts").length() != 0) {
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93 externalVMOpts = System.getProperty("test.java.opts").split(" ");
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94 }
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95 finalargs.addAll(Arrays.asList(externalVMOpts));
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96 }
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97
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98 finalargs.addAll(Arrays.asList(vmargs));
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99 finalargs.addAll(Arrays.asList(whiteboxOpts));
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100 finalargs.add(classname);
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101 finalargs.addAll(Arrays.asList(arguments));
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102
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103 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(finalargs.toArray(new String[0]));
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104 OutputAnalyzer output = new OutputAnalyzer(pb.start());
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105 output.shouldHaveExitValue(0);
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106 return output;
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107 }
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108
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109 private static String[] join(String[] part1, String part2) {
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110 ArrayList<String> result = new ArrayList<String>();
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111 result.addAll(Arrays.asList(part1));
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112 result.add(part2);
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113 return result.toArray(new String[0]);
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114 }
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115
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116 public static void checkCompressedOopsErgo(String[] gcflags) throws Exception {
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117 long maxHeapForCompressedOops = getMaxHeapForCompressedOops(gcflags);
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118
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119 checkUseCompressedOops(gcflags, maxHeapForCompressedOops, true);
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120 checkUseCompressedOops(gcflags, maxHeapForCompressedOops - 1, true);
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121 checkUseCompressedOops(gcflags, maxHeapForCompressedOops + 1, false);
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122
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123 // the use of HeapBaseMinAddress should not change the outcome
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124 checkUseCompressedOops(join(gcflags, "-XX:HeapBaseMinAddress=32G"), maxHeapForCompressedOops, true);
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125 checkUseCompressedOops(join(gcflags, "-XX:HeapBaseMinAddress=32G"), maxHeapForCompressedOops - 1, true);
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126 checkUseCompressedOops(join(gcflags, "-XX:HeapBaseMinAddress=32G"), maxHeapForCompressedOops + 1, false);
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127
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128 // use a different object alignment
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129 maxHeapForCompressedOops = getMaxHeapForCompressedOops(join(gcflags, "-XX:ObjectAlignmentInBytes=16"));
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130
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131 checkUseCompressedOops(join(gcflags, "-XX:ObjectAlignmentInBytes=16"), maxHeapForCompressedOops, true);
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132 checkUseCompressedOops(join(gcflags, "-XX:ObjectAlignmentInBytes=16"), maxHeapForCompressedOops - 1, true);
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133 checkUseCompressedOops(join(gcflags, "-XX:ObjectAlignmentInBytes=16"), maxHeapForCompressedOops + 1, false);
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134
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135 // use a different CompressedClassSpaceSize
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136 String compressedClassSpaceSizeArg = "-XX:CompressedClassSpaceSize=" + 2 * getCompressedClassSpaceSize();
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137 maxHeapForCompressedOops = getMaxHeapForCompressedOops(join(gcflags, compressedClassSpaceSizeArg));
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138
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139 checkUseCompressedOops(join(gcflags, compressedClassSpaceSizeArg), maxHeapForCompressedOops, true);
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140 checkUseCompressedOops(join(gcflags, compressedClassSpaceSizeArg), maxHeapForCompressedOops - 1, true);
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141 checkUseCompressedOops(join(gcflags, compressedClassSpaceSizeArg), maxHeapForCompressedOops + 1, false);
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142 }
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143
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144 private static void checkUseCompressedOops(String[] args, long heapsize, boolean expectUseCompressedOops) throws Exception {
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145 ArrayList<String> finalargs = new ArrayList<String>();
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146 finalargs.addAll(Arrays.asList(args));
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147 finalargs.add("-Xmx" + heapsize);
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148 finalargs.add("-XX:+PrintFlagsFinal");
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149 finalargs.add("-version");
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150
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151 String output = expectValid(finalargs.toArray(new String[0]));
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152
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153 boolean actualUseCompressedOops = getFlagBoolValue(" UseCompressedOops", output);
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154
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155 Asserts.assertEQ(expectUseCompressedOops, actualUseCompressedOops);
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156 }
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157
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158 private static boolean getFlagBoolValue(String flag, String where) {
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159 Matcher m = Pattern.compile(flag + "\\s+:?= (true|false)").matcher(where);
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160 if (!m.find()) {
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161 throw new RuntimeException("Could not find value for flag " + flag + " in output string");
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162 }
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163 return m.group(1).equals("true");
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164 }
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165
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166 private static String expect(String[] flags, boolean hasWarning, boolean hasError, int errorcode) throws Exception {
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167 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(flags);
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168 OutputAnalyzer output = new OutputAnalyzer(pb.start());
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169 output.shouldHaveExitValue(errorcode);
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170 return output.getStdout();
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171 }
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172
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173 private static String expectValid(String[] flags) throws Exception {
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174 return expect(flags, false, false, 0);
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175 }
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176 }
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177