1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2012 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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4 | *
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5 | * This file is part of HeuristicLab.
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6 | *
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7 | * HeuristicLab is free software: you can redistribute it and/or modify
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8 | * it under the terms of the GNU General Public License as published by
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9 | * the Free Software Foundation, either version 3 of the License, or
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10 | * (at your option) any later version.
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11 | *
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12 | * HeuristicLab is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | * GNU General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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19 | */
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20 | #endregion
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21 |
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22 | using System;
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23 | using System.Collections.Generic;
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24 | using System.ComponentModel;
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25 | using System.Drawing;
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26 | using System.Linq;
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27 | using System.Threading;
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28 | using System.Threading.Tasks;
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29 | using System.Timers;
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30 | using HeuristicLab.Collections;
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31 | using HeuristicLab.Common;
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32 | using HeuristicLab.Common.Resources;
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33 | using HeuristicLab.Core;
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34 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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35 | using Timer = System.Timers.Timer;
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36 |
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37 | namespace HeuristicLab.Optimization {
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38 | internal enum TimeLimitedRunAction { None, Prepare, Start, Pause, Stop };
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39 |
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40 | /// <summary>
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41 | /// A run in which an algorithm is executed for a certain maximum time only.
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42 | /// </summary>
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43 | [Item("TimeLimitRun", "A run in which an optimizer is executed a certain maximum time.")]
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44 | [Creatable("Testing & Analysis")]
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45 | [StorableClass]
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46 | public sealed class TimeLimitRun : NamedItem, IOptimizer, IStorableContent, INotifyPropertyChanged {
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47 | public string Filename { get; set; }
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48 |
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49 | #region ItemImage
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50 | public static new Image StaticItemImage {
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51 | get { return VSImageLibrary.Event; }
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52 | }
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53 | public override Image ItemImage {
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54 | get { return (Algorithm != null) ? Algorithm.ItemImage : VSImageLibrary.ExecutableStopped; }
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55 | }
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56 | #endregion
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57 |
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58 | private Timer snapTimer, runTimer;
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59 | private readonly ManualResetEvent algorithmStarted = new ManualResetEvent(false);
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60 | private readonly ManualResetEvent algorithmPaused = new ManualResetEvent(false);
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61 | private readonly ManualResetEvent algorithmStopped = new ManualResetEvent(false);
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62 | [Storable]
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63 | private bool snapshotTimesDirty;
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64 |
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65 | [Storable]
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66 | private TimeSpan maximumExecutionTime;
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67 | public TimeSpan MaximumExecutionTime {
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68 | get { return maximumExecutionTime; }
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69 | set {
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70 | if (maximumExecutionTime == value) return;
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71 | maximumExecutionTime = value;
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72 | runTimer.Interval = (maximumExecutionTime - ExecutionTime).TotalMilliseconds;
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73 | OnPropertyChanged("MaximumExecutionTime");
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74 | }
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75 | }
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76 |
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77 | [Storable]
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78 | private int snapshotTimesIndex;
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79 | [Storable]
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80 | private ObservableList<double> snapshotTimes;
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81 | public ObservableList<double> SnapshotTimes {
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82 | get { return snapshotTimes; }
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83 | set {
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84 | if (snapshotTimes == value) return;
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85 | snapshotTimes = value;
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86 | snapshotTimesDirty = true;
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87 | OnPropertyChanged("SnapshotTimes");
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88 | }
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89 | }
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90 |
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91 | [Storable]
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92 | private bool storeAlgorithmInEachSnapshot;
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93 | [Storable]
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94 | public bool StoreAlgorithmInEachSnapshot {
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95 | get { return storeAlgorithmInEachSnapshot; }
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96 | set {
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97 | if (storeAlgorithmInEachSnapshot == value) return;
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98 | storeAlgorithmInEachSnapshot = value;
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99 | OnPropertyChanged("StoreAlgorithmInEachSnapshot");
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100 | }
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101 | }
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102 |
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103 | [Storable]
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104 | private RunCollection snapshots;
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105 | public RunCollection Snapshots {
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106 | get { return snapshots; }
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107 | set {
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108 | if (snapshots == value) return;
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109 | snapshots = value;
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110 | OnPropertyChanged("Snapshots");
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111 | }
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112 | }
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113 |
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114 | #region Inherited Properties
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115 | public ExecutionState ExecutionState {
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116 | get { return (Algorithm != null) ? Algorithm.ExecutionState : ExecutionState.Stopped; }
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117 | }
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118 |
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119 | public TimeSpan ExecutionTime {
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120 | get { return (Algorithm != null) ? Algorithm.ExecutionTime : TimeSpan.FromSeconds(0); }
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121 | }
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122 |
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123 | [Storable]
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124 | private IAlgorithm algorithm;
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125 | public IAlgorithm Algorithm {
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126 | get { return algorithm; }
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127 | set {
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128 | if (algorithm == value) return;
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129 | if (algorithm != null) DeregisterAlgorithmEvents();
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130 | algorithm = value;
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131 | if (algorithm != null) {
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132 | RegisterAlgorithmEvents();
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133 | if (algorithm.ExecutionState == ExecutionState.Started) algorithmStarted.Set();
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134 | else algorithmStarted.Reset();
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135 | if (algorithm.ExecutionState == ExecutionState.Paused) algorithmPaused.Set();
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136 | else algorithmPaused.Reset();
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137 | if (algorithm.ExecutionState == ExecutionState.Stopped) algorithmStopped.Set();
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138 | else algorithmStopped.Reset();
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139 | }
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140 | OnPropertyChanged("Algorithm");
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141 | Prepare();
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142 | }
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143 | }
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144 |
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145 | [Storable]
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146 | private RunCollection runs;
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147 | public RunCollection Runs {
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148 | get { return runs; }
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149 | private set {
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150 | if (value == null) throw new ArgumentNullException();
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151 | if (runs == value) return;
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152 | runs = value;
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153 | OnPropertyChanged("Runs");
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154 | }
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155 | }
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156 |
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157 | public IEnumerable<IOptimizer> NestedOptimizers {
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158 | get {
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159 | if (Algorithm == null) yield break;
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160 | yield return Algorithm;
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161 | foreach (var opt in Algorithm.NestedOptimizers)
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162 | yield return opt;
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163 | }
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164 | }
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165 | #endregion
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166 |
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167 | [StorableConstructor]
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168 | private TimeLimitRun(bool deserializing) : base(deserializing) { }
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169 | private TimeLimitRun(TimeLimitRun original, Cloner cloner)
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170 | : base(original, cloner) {
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171 | maximumExecutionTime = original.maximumExecutionTime;
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172 | snapshotTimes = new ObservableList<double>(original.snapshotTimes);
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173 | snapshotTimesIndex = original.snapshotTimesIndex;
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174 | snapshots = cloner.Clone(original.snapshots);
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175 | snapshotTimesDirty = original.snapshotTimesDirty;
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176 | storeAlgorithmInEachSnapshot = original.storeAlgorithmInEachSnapshot;
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177 | algorithm = cloner.Clone(original.algorithm);
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178 | runs = cloner.Clone(original.runs);
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179 |
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180 | snapTimer = new Timer() {
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181 | AutoReset = original.snapTimer.AutoReset,
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182 | Interval = original.snapTimer.Interval
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183 | };
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184 | runTimer = new Timer() {
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185 | AutoReset = original.runTimer.AutoReset,
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186 | Interval = original.runTimer.Interval
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187 | };
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188 | if (original.algorithm != null && original.algorithm.ExecutionState == ExecutionState.Started)
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189 | algorithmStarted.Set();
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190 | if (original.algorithm != null && original.algorithm.ExecutionState == ExecutionState.Paused)
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191 | algorithmPaused.Set();
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192 | if (original.algorithm != null && original.algorithm.ExecutionState == ExecutionState.Stopped)
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193 | algorithmStopped.Set();
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194 |
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195 | Initialize();
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196 | }
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197 | public TimeLimitRun()
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198 | : base() {
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199 | name = ItemName;
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200 | description = ItemDescription;
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201 | maximumExecutionTime = TimeSpan.FromMinutes(1);
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202 | snapshotTimes = new ObservableList<double>(new[] {
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203 | TimeSpan.FromSeconds(5).TotalMilliseconds,
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204 | TimeSpan.FromSeconds(10).TotalMilliseconds,
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205 | TimeSpan.FromSeconds(30).TotalMilliseconds });
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206 | snapshotTimesIndex = 0;
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207 | snapTimer = new Timer() {
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208 | AutoReset = false,
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209 | Enabled = false,
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210 | Interval = 100
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211 | };
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212 | runTimer = new Timer() {
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213 | AutoReset = false,
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214 | Enabled = false,
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215 | Interval = MaximumExecutionTime.TotalMilliseconds
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216 | };
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217 | snapshots = new RunCollection();
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218 | Runs = new RunCollection { AlgorithmName = Name };
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219 | Initialize();
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220 | }
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221 | public TimeLimitRun(string name)
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222 | : base(name) {
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223 | description = ItemDescription;
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224 | maximumExecutionTime = TimeSpan.FromMinutes(1);
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225 | snapshotTimes = new ObservableList<double>(new[] {
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226 | TimeSpan.FromSeconds(5).TotalMilliseconds,
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227 | TimeSpan.FromSeconds(10).TotalMilliseconds,
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228 | TimeSpan.FromSeconds(30).TotalMilliseconds });
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229 | snapshotTimesIndex = 0;
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230 | snapTimer = new Timer() {
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231 | AutoReset = false,
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232 | Enabled = false,
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233 | Interval = 100
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234 | };
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235 | snapshots = new RunCollection();
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236 | runTimer = new Timer() {
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237 | AutoReset = false,
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238 | Enabled = false,
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239 | Interval = MaximumExecutionTime.TotalMilliseconds
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240 | };
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241 | Runs = new RunCollection { AlgorithmName = Name };
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242 | Initialize();
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243 | }
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244 | public TimeLimitRun(string name, string description)
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245 | : base(name, description) {
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246 | maximumExecutionTime = TimeSpan.FromMinutes(1);
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247 | snapshotTimes = new ObservableList<double>(new[] {
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248 | TimeSpan.FromSeconds(5).TotalMilliseconds,
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249 | TimeSpan.FromSeconds(10).TotalMilliseconds,
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250 | TimeSpan.FromSeconds(30).TotalMilliseconds });
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251 | snapshotTimesIndex = 0;
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252 | snapTimer = new Timer() {
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253 | AutoReset = false,
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254 | Enabled = false,
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255 | Interval = 100
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256 | };
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257 | snapshots = new RunCollection();
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258 | runTimer = new Timer() {
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259 | AutoReset = false,
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260 | Enabled = false,
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261 | Interval = MaximumExecutionTime.TotalMilliseconds
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262 | };
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263 | Runs = new RunCollection { AlgorithmName = Name };
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264 | Initialize();
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265 | }
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266 |
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267 | public override IDeepCloneable Clone(Cloner cloner) {
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268 | if (ExecutionState == ExecutionState.Started) throw new InvalidOperationException(string.Format("Clone not allowed in execution state \"{0}\".", ExecutionState));
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269 | return new TimeLimitRun(this, cloner);
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270 | }
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271 |
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272 | [StorableHook(HookType.AfterDeserialization)]
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273 | private void AfterDeserialization() {
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274 | // the timers will not be serialized
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275 | snapTimer = new Timer() {
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276 | AutoReset = false,
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277 | Enabled = false,
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278 | Interval = 100
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279 | };
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280 | runTimer = new Timer() {
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281 | AutoReset = false,
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282 | Enabled = false,
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283 | Interval = double.MaxValue
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284 | };
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285 | if (Algorithm != null && Algorithm.ExecutionState == ExecutionState.Started)
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286 | algorithmStarted.Set();
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287 | else algorithmStarted.Reset();
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288 | if (Algorithm != null && Algorithm.ExecutionState == ExecutionState.Paused)
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289 | algorithmPaused.Set();
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290 | else algorithmPaused.Reset();
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291 | if (Algorithm != null && Algorithm.ExecutionState == ExecutionState.Stopped)
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292 | algorithmStopped.Set();
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293 | else algorithmStopped.Reset();
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294 | Initialize();
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295 | }
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296 |
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297 | private void Initialize() {
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298 | if (algorithm != null) RegisterAlgorithmEvents();
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299 | snapshotTimes.ItemsAdded += snapshotTimes_Changed;
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300 | snapshotTimes.ItemsMoved += snapshotTimes_Changed;
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301 | snapshotTimes.ItemsRemoved += snapshotTimes_Changed;
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302 | snapshotTimes.ItemsReplaced += snapshotTimes_Changed;
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303 | snapshotTimes.CollectionReset += snapshotTimes_Changed;
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304 | snapTimer.Elapsed += snapshotTimer_Elapsed;
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305 | runTimer.Elapsed += runTimer_Elapsed;
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306 | }
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307 |
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308 | private void snapshotTimes_Changed(object sender, EventArgs e) {
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309 | snapshotTimesDirty = true;
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310 | }
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311 |
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312 | private readonly object snapshotLock = new object();
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313 | private void snapshotTimer_Elapsed(object sender, ElapsedEventArgs e) {
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314 | snapTimer.Stop();
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315 | lock (snapshotLock) {
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316 | try {
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317 | if (Algorithm == null) return;
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318 | if (ExecutionState != ExecutionState.Started) return;
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319 |
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320 | var execTime = ExecutionTime;
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321 | if (snapshotTimesIndex < SnapshotTimes.Count &&
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322 | SnapshotTimes[snapshotTimesIndex] <= execTime.TotalMilliseconds) {
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323 | DoSnapshot();
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324 | snapshotTimesIndex++;
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325 | try {
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326 | Algorithm.Start();
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327 | algorithmStarted.WaitOne();
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328 | } catch (InvalidOperationException) { }
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329 | }
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330 | } catch { }
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331 | snapTimer.Start();
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332 | }
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333 | }
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334 |
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335 | private void runTimer_Elapsed(object sender, ElapsedEventArgs e) {
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336 | snapTimer.Stop();
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337 | lock (snapshotLock) {
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338 | try {
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339 | Algorithm.Stop();
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340 | algorithmStopped.WaitOne();
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341 | } catch (InvalidOperationException) { }
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342 | }
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343 | }
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344 |
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345 | private void FindNextSnapshotTimeIndex(TimeSpan reference) {
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346 | var index = 0;
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347 | while (index < snapshotTimes.Count && (snapshotTimes[index] - reference.TotalMilliseconds) <= 0) {
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348 | index++;
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349 | };
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350 | snapshotTimesIndex = index;
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351 | }
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352 |
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353 | private void DoSnapshot() {
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354 | lock (snapshotLock) {
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355 | var wasPaused = Algorithm.ExecutionState == ExecutionState.Paused;
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356 | var error = false;
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357 | try {
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358 | Algorithm.Pause();
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359 | algorithmPaused.WaitOne();
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360 | } catch (InvalidOperationException) {
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361 | error = true;
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362 | }
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363 | if (error && ExecutionState != ExecutionState.Paused) return; // Algorithm is either stopped or prepared
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364 |
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365 | MakeSnapshot();
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366 | if (!wasPaused) {
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367 | try {
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368 | Algorithm.Start();
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369 | algorithmStarted.WaitOne();
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370 | } catch (InvalidOperationException) { }
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371 | }
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372 | }
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373 | }
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374 |
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375 | private void MakeSnapshot() {
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376 | string time = Math.Round(ExecutionTime.TotalSeconds, 1).ToString("0.0");
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377 | string runName = "Snapshot " + time + "s " + algorithm.Name;
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378 | Run run;
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379 | if (StoreAlgorithmInEachSnapshot) {
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380 | var temporarilySetStoreFlag = !Algorithm.StoreAlgorithmInEachRun;
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381 | if (temporarilySetStoreFlag) Algorithm.StoreAlgorithmInEachRun = true;
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382 | run = new Run(runName, Algorithm);
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383 | if (temporarilySetStoreFlag) Algorithm.StoreAlgorithmInEachRun = false;
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384 | } else {
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385 | // duplicate code of Run.Initialize - necessary, because Algorithm property doesn't have a setter
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386 | run = new Run() { Name = runName };
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387 | var parameters = new Dictionary<string, IItem>();
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388 | var results = new Dictionary<string, IItem>();
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389 | algorithm.CollectParameterValues(parameters);
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390 | algorithm.CollectResultValues(results);
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391 | var cloner = new Cloner();
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392 | foreach (var kvp in parameters.Select(x => new KeyValuePair<string, IItem>(x.Key, cloner.Clone(x.Value))).ToDictionary(x => x.Key, x => x.Value))
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393 | run.Parameters.Add(kvp);
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394 | foreach (var kvp in results.Select(x => new KeyValuePair<string, IItem>(x.Key, cloner.Clone(x.Value))).ToDictionary(x => x.Key, x => x.Value))
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395 | run.Results.Add(kvp);
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396 | }
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397 | snapshots.Add(run);
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398 | }
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399 |
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400 | public void Snapshot() {
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401 | Task.Factory.StartNew(DoSnapshot);
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402 | }
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403 |
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404 | public void Prepare() {
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405 | Prepare(false);
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406 | }
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407 | public void Prepare(bool clearRuns) {
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408 | Algorithm.Prepare(clearRuns);
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409 | }
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410 | public void Start() {
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411 | Algorithm.Start();
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412 | }
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413 | public void Pause() {
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414 | Algorithm.Pause();
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415 | }
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416 | public void Stop() {
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417 | Algorithm.Stop();
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418 | }
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419 |
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420 | #region Events
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421 | protected override void OnNameChanged() {
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422 | base.OnNameChanged();
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423 | runs.AlgorithmName = Name;
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424 | }
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425 |
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426 | public event PropertyChangedEventHandler PropertyChanged;
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427 | private void OnPropertyChanged(string property) {
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428 | var handler = PropertyChanged;
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429 | if (handler != null) handler(this, new PropertyChangedEventArgs(property));
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430 | }
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431 |
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432 | #region IExecutable Events
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433 | public event EventHandler ExecutionStateChanged;
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434 | private void OnExecutionStateChanged() {
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435 | var handler = ExecutionStateChanged;
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436 | if (handler != null) handler(this, EventArgs.Empty);
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437 | }
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438 | public event EventHandler ExecutionTimeChanged;
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439 | private void OnExecutionTimeChanged() {
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440 | var handler = ExecutionTimeChanged;
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441 | if (handler != null) handler(this, EventArgs.Empty);
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442 | }
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443 | public event EventHandler Prepared;
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444 | private void OnPrepared() {
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445 | var handler = Prepared;
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446 | if (handler != null) handler(this, EventArgs.Empty);
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447 | }
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448 | public event EventHandler Started;
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449 | private void OnStarted() {
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450 | var handler = Started;
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451 | if (handler != null) handler(this, EventArgs.Empty);
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452 | }
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453 | public event EventHandler Paused;
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454 | private void OnPaused() {
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455 | var handler = Paused;
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456 | if (handler != null) handler(this, EventArgs.Empty);
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457 | }
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458 | public event EventHandler Stopped;
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459 | private void OnStopped() {
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460 | var handler = Stopped;
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461 | if (handler != null) handler(this, EventArgs.Empty);
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462 | }
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463 | public event EventHandler<EventArgs<Exception>> ExceptionOccurred;
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464 | private void OnExceptionOccurred(Exception exception) {
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465 | var handler = ExceptionOccurred;
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466 | if (handler != null) handler(this, new EventArgs<Exception>(exception));
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467 | }
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468 | #endregion
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469 |
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470 | #region Algorithm Events
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471 | private void RegisterAlgorithmEvents() {
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472 | algorithm.ExceptionOccurred += Algorithm_ExceptionOccurred;
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473 | algorithm.ExecutionTimeChanged += Algorithm_ExecutionTimeChanged;
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474 | algorithm.ExecutionStateChanged += Algorithm_ExecutionStateChanged;
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475 | algorithm.Paused += Algorithm_Paused;
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476 | algorithm.Prepared += Algorithm_Prepared;
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477 | algorithm.Started += Algorithm_Started;
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478 | algorithm.Stopped += Algorithm_Stopped;
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479 | }
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480 | private void DeregisterAlgorithmEvents() {
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481 | algorithm.ExceptionOccurred -= Algorithm_ExceptionOccurred;
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482 | algorithm.ExecutionTimeChanged -= Algorithm_ExecutionTimeChanged;
|
---|
483 | algorithm.ExecutionStateChanged -= Algorithm_ExecutionStateChanged;
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484 | algorithm.Paused -= Algorithm_Paused;
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485 | algorithm.Prepared -= Algorithm_Prepared;
|
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486 | algorithm.Started -= Algorithm_Started;
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487 | algorithm.Stopped -= Algorithm_Stopped;
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488 | }
|
---|
489 | private void Algorithm_ExceptionOccurred(object sender, EventArgs<Exception> e) {
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490 | OnExceptionOccurred(e.Value);
|
---|
491 | }
|
---|
492 | private void Algorithm_ExecutionTimeChanged(object sender, EventArgs e) {
|
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493 | OnExecutionTimeChanged();
|
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494 | }
|
---|
495 | private void Algorithm_ExecutionStateChanged(object sender, EventArgs e) {
|
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496 | OnExecutionStateChanged();
|
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497 | }
|
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498 | private void Algorithm_Paused(object sender, EventArgs e) {
|
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499 | algorithmStarted.Reset();
|
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500 | algorithmPaused.Set();
|
---|
501 | algorithmStopped.Reset();
|
---|
502 | OnPaused();
|
---|
503 | }
|
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504 | private void Algorithm_Prepared(object sender, EventArgs e) {
|
---|
505 | algorithmStarted.Reset();
|
---|
506 | algorithmPaused.Reset();
|
---|
507 | algorithmStopped.Reset();
|
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508 | snapTimer.Stop();
|
---|
509 | runTimer.Stop();
|
---|
510 | snapshotTimesIndex = 0;
|
---|
511 | snapshots.Clear();
|
---|
512 | OnPrepared();
|
---|
513 | }
|
---|
514 | private void Algorithm_Started(object sender, EventArgs e) {
|
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515 | algorithmStarted.Set();
|
---|
516 | algorithmPaused.Reset();
|
---|
517 | algorithmStopped.Reset();
|
---|
518 | var execTime = ExecutionTime;
|
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519 | if (snapshotTimesDirty) {
|
---|
520 | SnapshotTimes.Sort();
|
---|
521 | snapshotTimesDirty = false; // sort will mark it dirty again
|
---|
522 | FindNextSnapshotTimeIndex(execTime);
|
---|
523 | }
|
---|
524 | runTimer.Interval = (MaximumExecutionTime - execTime).TotalMilliseconds;
|
---|
525 | snapTimer.Start();
|
---|
526 | runTimer.Start();
|
---|
527 | OnStarted();
|
---|
528 | }
|
---|
529 | private void Algorithm_Stopped(object sender, EventArgs e) {
|
---|
530 | algorithmStarted.Reset();
|
---|
531 | algorithmPaused.Reset();
|
---|
532 | algorithmStopped.Set();
|
---|
533 | lock (snapshotLock) {
|
---|
534 | snapTimer.Stop();
|
---|
535 | runTimer.Stop();
|
---|
536 | MakeSnapshot();
|
---|
537 | }
|
---|
538 | var cloner = new Cloner();
|
---|
539 | var algRun = cloner.Clone(Algorithm.Runs.Last());
|
---|
540 | var clonedSnapshots = cloner.Clone(snapshots);
|
---|
541 | try {
|
---|
542 | algRun.Results.Add("Snapshots", clonedSnapshots);
|
---|
543 | } catch (ArgumentException ex) {
|
---|
544 | // TODO strategy?
|
---|
545 | }
|
---|
546 | Runs.Add(algRun);
|
---|
547 | Algorithm.Runs.Clear();
|
---|
548 | OnStopped();
|
---|
549 | }
|
---|
550 | #endregion
|
---|
551 | #endregion
|
---|
552 | }
|
---|
553 | }
|
---|