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annotate test/gc/arguments/TestUseCompressedOopsErgoTools.java @ 12986:1b422ef5288a

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8025728: Missing volatile specifier for field G1AllocRegion::_alloc_region Summary: The field G1AllocRegion::_alloc_region needs to be declared volatile as it is used with that intention. Otherwise the compiler may generate the code that reloads the value which might have changed in the meantime, leading to spurious crashes. Reviewed-by: iveresov, simonis, tschatzl Contributed-by: Axel Siebenborn <axel.siebenborn@sap.com>
author tschatzl
date Wed, 23 Oct 2013 10:23:06 +0200
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