1 | // Copyright 2012 Georg-August-Universität Göttingen, Germany |
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2 | // |
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3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
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4 | // you may not use this file except in compliance with the License. |
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5 | // You may obtain a copy of the License at |
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6 | // |
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7 | // http://www.apache.org/licenses/LICENSE-2.0 |
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8 | // |
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9 | // Unless required by applicable law or agreed to in writing, software |
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10 | // distributed under the License is distributed on an "AS IS" BASIS, |
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11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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12 | // See the License for the specific language governing permissions and |
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13 | // limitations under the License. |
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14 | |
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15 | package de.ugoe.cs.autoquest.tasktrees.temporalrelation; |
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16 | |
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17 | import java.io.PrintStream; |
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18 | import java.text.DecimalFormat; |
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19 | import java.util.HashMap; |
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20 | import java.util.LinkedList; |
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21 | import java.util.List; |
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22 | import java.util.Map; |
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23 | |
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24 | /** |
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25 | * <p> |
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26 | * TODO comment |
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27 | * </p> |
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28 | * |
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29 | * @author Patrick Harms |
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30 | */ |
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31 | public class StopWatch { |
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32 | |
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33 | /** |
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34 | * |
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35 | */ |
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36 | private Map<String, List<Long>> mWatches = new HashMap<String, List<Long>>(); |
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37 | |
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38 | /** |
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39 | * |
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40 | * |
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41 | * @param id |
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42 | */ |
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43 | public void start(String id) { |
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44 | List<Long> timeStamps = mWatches.get(id); |
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45 | |
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46 | if (timeStamps == null) { |
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47 | timeStamps = new LinkedList<Long>(); |
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48 | mWatches.put(id, timeStamps); |
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49 | } |
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50 | |
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51 | if (timeStamps.size() % 2 == 0) { |
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52 | timeStamps.add(System.currentTimeMillis()); |
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53 | } |
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54 | else { |
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55 | throw new IllegalStateException("watch with id " + id + " already running"); |
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56 | } |
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57 | } |
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58 | |
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59 | /** |
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60 | * |
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61 | * |
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62 | * @param id |
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63 | */ |
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64 | public void stop(String id) { |
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65 | List<Long> timeStamps = mWatches.get(id); |
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66 | |
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67 | if (timeStamps == null) { |
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68 | throw new IllegalArgumentException("watch with id " + id + " does not exist"); |
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69 | } |
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70 | |
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71 | if (timeStamps.size() % 2 == 0) { |
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72 | throw new IllegalStateException("watch with id " + id + " already stopped"); |
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73 | } |
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74 | else { |
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75 | timeStamps.add(System.currentTimeMillis()); |
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76 | } |
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77 | } |
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78 | |
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79 | /** |
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80 | * |
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81 | * |
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82 | * @param id |
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83 | */ |
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84 | public long getDuration(String id) { |
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85 | List<Long> timeStamps = mWatches.get(id); |
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86 | |
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87 | if (timeStamps == null) { |
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88 | throw new IllegalArgumentException("watch with id " + id + " does not exist"); |
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89 | } |
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90 | |
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91 | if (timeStamps.size() % 2 != 0) { |
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92 | stop(id); |
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93 | } |
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94 | |
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95 | long result = 0; |
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96 | for (long timeStamp : timeStamps) { |
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97 | if (result >= 0) { |
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98 | result -= timeStamp; |
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99 | } |
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100 | else { |
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101 | result += timeStamp; |
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102 | } |
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103 | } |
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104 | |
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105 | return result; |
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106 | } |
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107 | |
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108 | /** |
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109 | * |
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110 | * @param out |
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111 | */ |
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112 | public void dumpStatistics(PrintStream out) { |
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113 | if (mWatches.size() <= 0) { |
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114 | throw new IllegalStateException("no watches registered that could be dumped"); |
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115 | } |
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116 | |
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117 | Map<String, Long> durations = new HashMap<String, Long>(); |
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118 | |
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119 | // get durations |
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120 | for (String id : mWatches.keySet()) { |
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121 | durations.put(id, getDuration(id)); |
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122 | } |
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123 | |
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124 | // sort by duration |
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125 | List<String> sortedIds = new LinkedList<String>(); |
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126 | int maxIdLength = 0; |
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127 | |
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128 | for (Map.Entry<String, Long> entry : durations.entrySet()) { |
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129 | boolean added = false; |
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130 | for (int i = 0; i < sortedIds.size(); i++) { |
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131 | if (durations.get(sortedIds.get(i)) >= entry.getValue()) { |
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132 | sortedIds.add(i, entry.getKey()); |
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133 | added = true; |
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134 | break; |
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135 | } |
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136 | } |
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137 | |
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138 | if (!added) { |
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139 | sortedIds.add(entry.getKey()); |
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140 | } |
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141 | |
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142 | maxIdLength = Math.max(maxIdLength, entry.getKey().length()); |
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143 | } |
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144 | |
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145 | // get longest duration and check whether it spans all other entries |
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146 | String id = sortedIds.get(sortedIds.size() - 1); |
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147 | List<Long> timeStamps = mWatches.get(id); |
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148 | long firstTimeStamp = timeStamps.get(0); |
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149 | long lastTimeStamp = timeStamps.get(timeStamps.size() - 1); |
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150 | long longestDuration = durations.get(id); |
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151 | boolean longestDurationCoversOthers = true; |
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152 | |
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153 | for (Map.Entry<String, List<Long>> watch : mWatches.entrySet()) { |
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154 | if ((watch.getValue().get(0) < firstTimeStamp) || |
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155 | (watch.getValue().get(watch.getValue().size() - 1) > lastTimeStamp)) |
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156 | { |
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157 | longestDurationCoversOthers = false; |
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158 | break; |
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159 | } |
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160 | } |
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161 | |
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162 | // no finally start the dumping |
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163 | out.println(); |
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164 | out.println("Watch Statistics"); |
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165 | out.println("================"); |
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166 | |
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167 | for (String sortedId : sortedIds) { |
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168 | out.print(sortedId); |
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169 | |
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170 | for (int i = sortedId.length(); i <= maxIdLength; i++) { |
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171 | out.print(' '); |
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172 | } |
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173 | |
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174 | out.print(':'); |
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175 | out.print(' '); |
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176 | |
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177 | out.print(durations.get(sortedId)); |
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178 | out.print(" ms"); |
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179 | |
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180 | if (longestDurationCoversOthers) { |
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181 | out.print(" ("); |
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182 | out.print(DecimalFormat.getPercentInstance().format |
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183 | ((double) durations.get(sortedId) / longestDuration)); |
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184 | out.print(" of overall duration)"); |
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185 | } |
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186 | out.println(); |
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187 | } |
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188 | |
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189 | out.println(); |
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190 | } |
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191 | } |
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