Mercurial > hg > truffle

annotate test/compiler/testlibrary/rtm/RTMLockingStatistics.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 665bbe93823f
children
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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 package rtm;
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26
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27 import java.util.EnumMap;
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28 import java.util.LinkedList;
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29 import java.util.List;
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30 import java.util.Map;
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31 import java.util.regex.Pattern;
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32 import java.util.regex.Matcher;
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33
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34 /**
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35 * Wrapper for +UsePreciseRTMLockingStatistics output.
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36 *
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37 * Example of locking statistics:
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38 *
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39 * java/lang/ClassLoader.loadClass@7
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40 * # rtm locks total (estimated): 0
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41 * # rtm lock aborts : 13
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42 * # rtm lock aborts 0: 12
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43 * # rtm lock aborts 1: 0
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44 * # rtm lock aborts 2: 0
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45 * # rtm lock aborts 3: 0
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46 * # rtm lock aborts 4: 0
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47 * # rtm lock aborts 5: 0
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48 */
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49 public class RTMLockingStatistics {
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50 /**
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51 * Pattern for aborts per abort type entries.
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52 */
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53 private static final Pattern ABORT_PATTERN;
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54
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55 /**
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56 * Pattern for whole statistics.
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57 */
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58 private static final Pattern RTM_LOCKING_STATISTICS_PATTERN;
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59
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60 static {
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61 String abortRe
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62 = "# rtm lock aborts\\s+(?<type>[0-9]+):\\s(?<count>[0-9]+)";
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63
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64 ABORT_PATTERN = Pattern.compile(abortRe);
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65 RTM_LOCKING_STATISTICS_PATTERN = Pattern.compile(
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66 "(?<className>[^.\n]+)\\." +
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67 "(?<methodName>[^@\n]+)@(?<bci>[0-9]+)\n" +
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68 "# rtm locks total \\(estimated\\):\\s*" +
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69 "(?<totalLocks>[0-9]+)\n" +
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70 "# rtm lock aborts\\s+:\\s*(?<totalAborts>[0-9]+)\n" +
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71 "(?<abortStats>(" + abortRe + "\n)+)");
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72 }
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73
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74 private final long totalLocks;
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75 private final long totalAborts;
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76 private final String className;
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77 private final String methodName;
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78 private final int bci;
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79 private final Map<AbortType, Long> aborts = new EnumMap<>(AbortType.class);
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80
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81 /**
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82 * Constructs RTMLockingStatistics from matcher captured statistics entry.
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83 * @param matcher Matcher captured statistics entry.
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84 */
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85 private RTMLockingStatistics(Matcher matcher) {
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86 className = matcher.group("className");
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87 methodName = matcher.group("methodName");
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88 bci = Integer.valueOf(matcher.group("bci"));
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89 totalLocks = Long.valueOf(matcher.group("totalLocks"));
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90 totalAborts = Long.valueOf(matcher.group("totalAborts"));
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91
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92 Matcher abortMatcher = ABORT_PATTERN.matcher(matcher.
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93 group("abortStats"));
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94
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95 while (abortMatcher.find()) {
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96 int type = Integer.valueOf(abortMatcher.group("type"));
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97 long count = Long.valueOf(abortMatcher.group("count"));
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98 setAborts(AbortType.lookup(type), count);
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99 }
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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 * Parses string and return all founded RTM locking statistics entries.
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105 *
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106 * @param str the string to be parsed.
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107 * @return list with all founded RTM locking statistics entries or
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108 * empty list if nothing was found.
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109 */
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110 public static List<RTMLockingStatistics> fromString(String str) {
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111 List<RTMLockingStatistics> statistics = new LinkedList<>();
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112 Matcher matcher = RTM_LOCKING_STATISTICS_PATTERN.matcher(str);
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113
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114 while (matcher.find()) {
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115 RTMLockingStatistics lock = new RTMLockingStatistics(matcher);
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116 statistics.add(lock);
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117 }
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118
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119 return statistics;
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120 }
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121
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122 /**
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123 * Parses string and return all founded RTM locking statistics entries
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124 * for locks in method {@code methodName}.
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125 *
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126 * @param methodName a name of the method for locks from which statistics
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127 * should be gathered.
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128 * @param str the string to be parsed.
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129 * @return list with all founded RTM locking statistics entries or
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130 * empty list if nothing was found.
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131 */
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132 public static List<RTMLockingStatistics> fromString(String methodName,
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133 String str) {
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134 String formattedMethodName = formatMethodName(methodName);
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135
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136 List<RTMLockingStatistics> statisticsForMethod = new LinkedList<>();
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137 for (RTMLockingStatistics statistics : fromString(str)) {
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138 if (statistics.getLockName().startsWith(formattedMethodName)) {
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139 statisticsForMethod.add(statistics);
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140 }
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141 }
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142 return statisticsForMethod;
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143 }
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144
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145 /**
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146 * Formats method's name so it will have the same format as
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147 * in rtm locking statistics.
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148 *
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149 * <pre>
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150 * Example:
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151 * com/example/Klass::method =&gt; com/example/Klass.method
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152 * com/example/Klass.method =&gt; com/example/Klass.method
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153 * com.example.Klass::method =&gt; com/example/Klass.method
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154 * com.example.Klass.method =&gt; com/example/Klass.method
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155 * </pre>
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156 *
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157 * @param methodName method's name that should be formatted.
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158 * @return formatted method's name.
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159 */
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160 private static String formatMethodName(String methodName) {
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161 String m[];
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162 if (methodName.contains("::")) {
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163 m = methodName.split("::");
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164 } else {
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165 int splitAt = methodName.lastIndexOf('.');
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166 m = new String[2];
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167 m[0] = methodName.substring(0, splitAt);
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168 m[1] = methodName.substring(splitAt + 1);
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169 }
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170 return String.format("%s.%s", m[0].replaceAll("\\.", "/"), m[1]);
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171 }
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172
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173 /**
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174 * Returns name of lock for which this statistics was collected.
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175 * Lock name has following format:
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176 * &lt;class name&gt;.&lt;method name&gt;@&lt;bci&gt;
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177 *
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178 * @return name of lock.
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179 */
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180 public String getLockName() {
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181 return String.format("%s.%s@%d", className, methodName, bci);
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182 }
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183
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184 /**
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185 * Returns aborts count for specified abort type.
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186 *
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187 * @param type an abort type.
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188 * @return count of aborts.
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189 */
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190 public long getAborts(AbortType type) {
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191 return aborts.getOrDefault(type, 0L);
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192 }
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193
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194 /**
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195 * Sets aborts count for specified abort type.
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196 *
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197 * @param type an abort type.
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198 * @param count count of aborts.
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199 */
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200 public void setAborts(AbortType type, long count) {
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201 aborts.put(type, count);
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202 }
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203
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204 public long getTotalLocks() {
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205 return totalLocks;
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206 }
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207
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208 public long getTotalAborts() {
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209 return totalAborts;
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210 }
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211
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212 @Override
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213 public String toString() {
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214 StringBuilder builder = new StringBuilder();
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215 builder.append(getLockName()).append('\n');
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216 builder.append(String.format("# rtm locks total (estimated): %d\n",
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217 getTotalLocks()));
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218 builder.append(String.format("# rtm lock aborts: %d\n",
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219 getTotalLocks()));
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220
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221 for (AbortType type : AbortType.values()) {
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222 builder.append(String.format("# rtm lock aborts %s %d\n",
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223 type.toString(), getAborts(type)));
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224 }
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225 return builder.toString();
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226 }
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227 }