1 /* |
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2 * Copyright (c) 2014, 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 CodeCacheTest |
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26 * @bug 8054889 |
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27 * @build DcmdUtil CodeCacheTest |
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28 * @run main/othervm -XX:+SegmentedCodeCache CodeCacheTest |
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29 * @run main/othervm -XX:-SegmentedCodeCache CodeCacheTest |
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30 * @summary Test of diagnostic command Compiler.codecache |
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31 */ |
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32 |
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33 import java.io.BufferedReader; |
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34 import java.io.StringReader; |
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35 import java.lang.reflect.Method; |
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36 import java.util.regex.Matcher; |
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37 import java.util.regex.Pattern; |
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38 |
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39 public class CodeCacheTest { |
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40 |
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41 /** |
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42 * This test calls Jcmd (diagnostic command tool) Compiler.codecache and then parses the output, |
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43 * making sure that all numbers look ok |
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44 * |
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45 * |
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46 * Expected output without code cache segmentation: |
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47 * |
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48 * CodeCache: size=245760Kb used=4680Kb max_used=4680Kb free=241079Kb |
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49 * bounds [0x00007f5bd9000000, 0x00007f5bd94a0000, 0x00007f5be8000000] |
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50 * total_blobs=575 nmethods=69 adapters=423 |
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51 * compilation: enabled |
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52 * |
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53 * Expected output with code cache segmentation (number of segments may change): |
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54 * |
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55 * CodeHeap 'non-methods': size=5696Kb used=2236Kb max_used=2238Kb free=3459Kb |
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56 * bounds [0x00007fa0f0ffe000, 0x00007fa0f126e000, 0x00007fa0f158e000] |
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57 * CodeHeap 'profiled nmethods': size=120036Kb used=8Kb max_used=8Kb free=120027Kb |
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58 * bounds [0x00007fa0f158e000, 0x00007fa0f17fe000, 0x00007fa0f8ac7000] |
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59 * CodeHeap 'non-profiled nmethods': size=120036Kb used=2Kb max_used=2Kb free=120034Kb |
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60 * bounds [0x00007fa0f8ac7000, 0x00007fa0f8d37000, 0x00007fa100000000] |
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61 * total_blobs=486 nmethods=8 adapters=399 |
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62 * compilation: enabled |
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63 */ |
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64 |
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65 static Pattern line1 = Pattern.compile("(CodeCache|CodeHeap.*): size=(\\p{Digit}*)Kb used=(\\p{Digit}*)Kb max_used=(\\p{Digit}*)Kb free=(\\p{Digit}*)Kb"); |
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66 static Pattern line2 = Pattern.compile(" bounds \\[0x(\\p{XDigit}*), 0x(\\p{XDigit}*), 0x(\\p{XDigit}*)\\]"); |
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67 static Pattern line3 = Pattern.compile(" total_blobs=(\\p{Digit}*) nmethods=(\\p{Digit}*) adapters=(\\p{Digit}*)"); |
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68 static Pattern line4 = Pattern.compile(" compilation: (.*)"); |
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69 |
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70 private static boolean getFlagBool(String flag, String where) { |
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71 Matcher m = Pattern.compile(flag + "\\s+:?= (true|false)").matcher(where); |
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72 if (!m.find()) { |
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73 throw new RuntimeException("Could not find value for flag " + flag + " in output string"); |
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74 } |
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75 return m.group(1).equals("true"); |
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76 } |
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77 |
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78 private static int getFlagInt(String flag, String where) { |
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79 Matcher m = Pattern.compile(flag + "\\s+:?=\\s+\\d+").matcher(where); |
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80 if (!m.find()) { |
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81 throw new RuntimeException("Could not find value for flag " + flag + " in output string"); |
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82 } |
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83 String match = m.group(); |
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84 return Integer.parseInt(match.substring(match.lastIndexOf(" ") + 1, match.length())); |
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85 } |
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86 |
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87 public static void main(String arg[]) throws Exception { |
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88 // Get number of code cache segments |
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89 int segmentsCount = 0; |
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90 String flags = DcmdUtil.executeDcmd("VM.flags", "-all"); |
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91 if (!getFlagBool("SegmentedCodeCache", flags) || !getFlagBool("UseCompiler", flags)) { |
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92 // No segmentation |
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93 segmentsCount = 1; |
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94 } else if (getFlagBool("TieredCompilation", flags) && getFlagInt("TieredStopAtLevel", flags) > 1) { |
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95 // Tiered compilation: use all segments |
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96 segmentsCount = 3; |
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97 } else { |
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98 // No TieredCompilation: only non-method and non-profiled segment |
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99 segmentsCount = 2; |
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100 } |
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101 |
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102 // Get output from dcmd (diagnostic command) |
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103 String result = DcmdUtil.executeDcmd("Compiler.codecache"); |
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104 BufferedReader r = new BufferedReader(new StringReader(result)); |
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105 |
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106 // Validate code cache segments |
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107 String line; |
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108 Matcher m; |
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109 for (int s = 0; s < segmentsCount; ++s) { |
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110 // Validate first line |
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111 line = r.readLine(); |
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112 m = line1.matcher(line); |
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113 if (m.matches()) { |
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114 for (int i = 2; i <= 5; i++) { |
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115 int val = Integer.parseInt(m.group(i)); |
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116 if (val < 0) { |
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117 throw new Exception("Failed parsing dcmd codecache output"); |
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118 } |
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119 } |
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120 } else { |
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121 throw new Exception("Regexp 1 failed"); |
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122 } |
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123 |
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124 // Validate second line |
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125 line = r.readLine(); |
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126 m = line2.matcher(line); |
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127 if (m.matches()) { |
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128 String start = m.group(1); |
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129 String mark = m.group(2); |
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130 String top = m.group(3); |
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131 |
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132 // Lexical compare of hex numbers to check that they look sane. |
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133 if (start.compareTo(mark) > 1) { |
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134 throw new Exception("Failed parsing dcmd codecache output"); |
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135 } |
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136 if (mark.compareTo(top) > 1) { |
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137 throw new Exception("Failed parsing dcmd codecache output"); |
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138 } |
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139 } else { |
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140 throw new Exception("Regexp 2 failed line: " + line); |
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141 } |
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142 } |
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143 |
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144 // Validate third line |
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145 line = r.readLine(); |
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146 m = line3.matcher(line); |
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147 if (m.matches()) { |
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148 int blobs = Integer.parseInt(m.group(1)); |
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149 if (blobs <= 0) { |
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150 throw new Exception("Failed parsing dcmd codecache output"); |
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151 } |
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152 int nmethods = Integer.parseInt(m.group(2)); |
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153 if (nmethods < 0) { |
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154 throw new Exception("Failed parsing dcmd codecache output"); |
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155 } |
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156 int adapters = Integer.parseInt(m.group(3)); |
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157 if (adapters <= 0) { |
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158 throw new Exception("Failed parsing dcmd codecache output"); |
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159 } |
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160 if (blobs < (nmethods + adapters)) { |
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161 throw new Exception("Failed parsing dcmd codecache output"); |
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162 } |
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163 } else { |
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164 throw new Exception("Regexp 3 failed"); |
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165 } |
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166 |
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167 // Validate fourth line |
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168 line = r.readLine(); |
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169 m = line4.matcher(line); |
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170 if (!m.matches()) { |
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171 throw new Exception("Regexp 4 failed"); |
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172 } |
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173 } |
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174 } |
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