1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2016 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.Drawing;
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25 | using System.Linq;
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26 | using System.Threading;
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27 | using System.Threading.Tasks;
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28 | using HeuristicLab.Collections;
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29 | using HeuristicLab.Common;
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30 | using HeuristicLab.Core;
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31 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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32 |
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33 | namespace HeuristicLab.Optimization {
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34 | /// <summary>
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35 | /// An experiment which contains multiple algorithms, batch runs or other experiments.
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36 | /// </summary>
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37 | [Item("Experiment", "An experiment which contains multiple algorithms, batch runs or other experiments.")]
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38 | [Creatable(CreatableAttribute.Categories.TestingAndAnalysis, Priority = 100)]
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39 | [StorableClass]
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40 | public sealed class Experiment : NamedItem, IOptimizer, IStorableContent {
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41 | public string Filename { get; set; }
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42 |
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43 | public static new Image StaticItemImage {
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44 | get { return HeuristicLab.Common.Resources.VSImageLibrary.Event; }
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45 | }
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46 | public override Image ItemImage {
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47 | get {
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48 | if (ExecutionState == ExecutionState.Prepared) return HeuristicLab.Common.Resources.VSImageLibrary.ExperimentPrepared;
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49 | else if (ExecutionState == ExecutionState.Started) return HeuristicLab.Common.Resources.VSImageLibrary.ExperimentStarted;
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50 | else if (ExecutionState == ExecutionState.Paused) return HeuristicLab.Common.Resources.VSImageLibrary.ExperimentPaused;
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51 | else if (ExecutionState == ExecutionState.Stopped) return HeuristicLab.Common.Resources.VSImageLibrary.ExperimentStopped;
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52 | else return base.ItemImage;
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53 | }
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54 | }
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55 |
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56 | [Storable]
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57 | private ExecutionState executionState;
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58 | public ExecutionState ExecutionState {
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59 | get { return executionState; }
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60 | private set {
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61 | if (executionState != value) {
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62 | executionState = value;
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63 | OnExecutionStateChanged();
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64 | OnItemImageChanged();
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65 | }
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66 | }
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67 | }
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68 |
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69 | [Storable]
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70 | private TimeSpan executionTime;
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71 | public TimeSpan ExecutionTime {
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72 | get { return executionTime; }
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73 | private set {
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74 | executionTime = value;
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75 | OnExecutionTimeChanged();
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76 | }
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77 | }
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78 |
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79 | [Storable]
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80 | private OptimizerList optimizers;
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81 | public OptimizerList Optimizers {
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82 | get { return optimizers; }
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83 | }
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84 |
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85 | [Storable]
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86 | private RunCollection runs;
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87 | public RunCollection Runs {
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88 | get { return runs; }
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89 | private set {
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90 | if (value == null) throw new ArgumentNullException();
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91 | if (runs != value) {
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92 | if (runs != null) DeregisterRunsEvents();
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93 | runs = value;
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94 | if (runs != null) RegisterRunsEvents();
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95 | }
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96 | }
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97 | }
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98 |
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99 | public IEnumerable<IOptimizer> NestedOptimizers {
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100 | get {
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101 | if (Optimizers == null) yield break;
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102 |
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103 | foreach (IOptimizer opt in Optimizers) {
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104 | yield return opt;
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105 | foreach (IOptimizer nestedOpt in opt.NestedOptimizers)
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106 | yield return nestedOpt;
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107 | }
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108 | }
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109 | }
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110 |
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111 | private bool experimentStarted = false;
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112 | private bool experimentStopped = false;
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113 |
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114 | public Experiment()
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115 | : base() {
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116 | name = ItemName;
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117 | description = ItemDescription;
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118 | executionState = ExecutionState.Stopped;
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119 | executionTime = TimeSpan.Zero;
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120 | optimizers = new OptimizerList();
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121 | Runs = new RunCollection { OptimizerName = Name };
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122 | Initialize();
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123 | }
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124 | public Experiment(string name)
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125 | : base(name) {
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126 | description = ItemDescription;
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127 | executionState = ExecutionState.Stopped;
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128 | executionTime = TimeSpan.Zero;
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129 | optimizers = new OptimizerList();
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130 | Runs = new RunCollection { OptimizerName = Name };
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131 | Initialize();
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132 | }
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133 | public Experiment(string name, string description)
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134 | : base(name, description) {
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135 | executionState = ExecutionState.Stopped;
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136 | executionTime = TimeSpan.Zero;
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137 | optimizers = new OptimizerList();
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138 | Runs = new RunCollection { OptimizerName = Name };
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139 | Initialize();
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140 | }
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141 | [StorableConstructor]
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142 | private Experiment(bool deserializing) : base(deserializing) { }
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143 | [StorableHook(HookType.AfterDeserialization)]
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144 | private void AfterDeserialization() {
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145 | Initialize();
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146 | }
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147 | private Experiment(Experiment original, Cloner cloner)
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148 | : base(original, cloner) {
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149 | executionState = original.executionState;
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150 | executionTime = original.executionTime;
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151 | optimizers = cloner.Clone(original.optimizers);
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152 | runs = cloner.Clone(original.runs);
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153 |
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154 | experimentStarted = original.experimentStarted;
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155 | experimentStopped = original.experimentStopped;
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156 | Initialize();
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157 | }
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158 | public override IDeepCloneable Clone(Cloner cloner) {
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159 | if (ExecutionState == ExecutionState.Started) throw new InvalidOperationException(string.Format("Clone not allowed in execution state \"{0}\".", ExecutionState));
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160 | return new Experiment(this, cloner);
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161 | }
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162 |
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163 | private void Initialize() {
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164 | RegisterOptimizersEvents();
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165 | foreach (IOptimizer optimizer in optimizers)
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166 | RegisterOptimizerEvents(optimizer);
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167 | if (runs != null) RegisterRunsEvents();
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168 | }
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169 |
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170 | public void Prepare() {
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171 | Prepare(false);
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172 | }
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173 | public void Prepare(bool clearRuns) {
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174 | if ((ExecutionState != ExecutionState.Prepared) && (ExecutionState != ExecutionState.Paused) && (ExecutionState != ExecutionState.Stopped))
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175 | throw new InvalidOperationException(string.Format("Prepare not allowed in execution state \"{0}\".", ExecutionState));
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176 | if (Optimizers.Count == 0) return;
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177 |
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178 | if (clearRuns) runs.Clear();
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179 |
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180 | experimentStarted = false;
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181 | experimentStopped = false;
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182 | foreach (IOptimizer optimizer in Optimizers.Where(x => x.ExecutionState != ExecutionState.Started)) {
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183 | // a race-condition may occur when the optimizer has changed the state by itself in the meantime
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184 | try { optimizer.Prepare(clearRuns); } catch (InvalidOperationException) { }
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185 | }
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186 | }
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187 | public void Start() {
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188 | Start(CancellationToken.None);
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189 | }
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190 | public void Start(CancellationToken cancellationToken) {
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191 | if ((ExecutionState != ExecutionState.Prepared) && (ExecutionState != ExecutionState.Paused))
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192 | throw new InvalidOperationException(string.Format("Start not allowed in execution state \"{0}\".", ExecutionState));
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193 | if (Optimizers.Count == 0) return;
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194 |
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195 | experimentStarted = true;
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196 | experimentStopped = false;
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197 | IOptimizer optimizer;
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198 | while ((optimizer = Optimizers.FirstOrDefault(x => (x.ExecutionState == ExecutionState.Prepared) || (x.ExecutionState == ExecutionState.Paused))) != null) {
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199 | // a race-condition may occur when the optimizer has changed the state by itself in the meantime
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200 | try { optimizer.Start(cancellationToken); } catch (InvalidOperationException) { }
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201 | if (ExecutionState == ExecutionState.Paused || ExecutionState == ExecutionState.Stopped) break;
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202 | }
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203 | }
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204 | public async Task StartAsync() { await StartAsync(CancellationToken.None); }
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205 | public async Task StartAsync(CancellationToken cancellationToken) {
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206 | await AsyncHelper.DoAsync(Start, cancellationToken);
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207 | }
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208 | public void Pause() {
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209 | if (ExecutionState != ExecutionState.Started)
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210 | throw new InvalidOperationException(string.Format("Pause not allowed in execution state \"{0}\".", ExecutionState));
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211 | if (Optimizers.Count == 0) return;
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212 |
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213 | experimentStarted = false;
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214 | experimentStopped = false;
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215 | foreach (IOptimizer optimizer in Optimizers.Where(x => x.ExecutionState == ExecutionState.Started)) {
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216 | // a race-condition may occur when the optimizer has changed the state by itself in the meantime
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217 | try { optimizer.Pause(); } catch (InvalidOperationException) { }
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218 | }
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219 | }
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220 | public void Stop() {
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221 | if ((ExecutionState != ExecutionState.Started) && (ExecutionState != ExecutionState.Paused))
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222 | throw new InvalidOperationException(string.Format("Stop not allowed in execution state \"{0}\".", ExecutionState));
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223 | if (Optimizers.Count == 0) return;
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224 |
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225 | experimentStarted = false;
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226 | experimentStopped = true;
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227 | if (Optimizers.Any(x => (x.ExecutionState == ExecutionState.Started) || (x.ExecutionState == ExecutionState.Paused))) {
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228 | foreach (var optimizer in Optimizers.Where(x => (x.ExecutionState == ExecutionState.Started) || (x.ExecutionState == ExecutionState.Paused))) {
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229 | // a race-condition may occur when the optimizer has changed the state by itself in the meantime
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230 | try { optimizer.Stop(); } catch (InvalidOperationException) { }
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231 | }
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232 | } else {
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233 | OnStopped();
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234 | }
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235 | }
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236 |
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237 | #region Events
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238 | protected override void OnNameChanged() {
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239 | base.OnNameChanged();
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240 | Runs.OptimizerName = Name;
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241 | }
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242 |
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243 | public event EventHandler ExecutionStateChanged;
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244 | private void OnExecutionStateChanged() {
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245 | EventHandler handler = ExecutionStateChanged;
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246 | if (handler != null) handler(this, EventArgs.Empty);
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247 | }
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248 | public event EventHandler ExecutionTimeChanged;
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249 | private void OnExecutionTimeChanged() {
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250 | EventHandler handler = ExecutionTimeChanged;
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251 | if (handler != null) handler(this, EventArgs.Empty);
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252 | }
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253 | public event EventHandler Prepared;
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254 | private void OnPrepared() {
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255 | ExecutionState = ExecutionState.Prepared;
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256 | EventHandler handler = Prepared;
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257 | if (handler != null) handler(this, EventArgs.Empty);
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258 | }
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259 | public event EventHandler Started;
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260 | private void OnStarted() {
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261 | ExecutionState = ExecutionState.Started;
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262 | EventHandler handler = Started;
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263 | if (handler != null) handler(this, EventArgs.Empty);
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264 | }
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265 | public event EventHandler Paused;
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266 | private void OnPaused() {
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267 | ExecutionState = ExecutionState.Paused;
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268 | EventHandler handler = Paused;
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269 | if (handler != null) handler(this, EventArgs.Empty);
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270 | }
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271 | public event EventHandler Stopped;
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272 | private void OnStopped() {
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273 | ExecutionState = ExecutionState.Stopped;
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274 | EventHandler handler = Stopped;
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275 | if (handler != null) handler(this, EventArgs.Empty);
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276 | }
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277 | public event EventHandler<EventArgs<Exception>> ExceptionOccurred;
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278 | private void OnExceptionOccurred(Exception exception) {
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279 | EventHandler<EventArgs<Exception>> handler = ExceptionOccurred;
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280 | if (handler != null) handler(this, new EventArgs<Exception>(exception));
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281 | }
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282 |
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283 | private void RegisterOptimizersEvents() {
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284 | Optimizers.CollectionReset += new CollectionItemsChangedEventHandler<IndexedItem<IOptimizer>>(Optimizers_CollectionReset);
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285 | Optimizers.ItemsAdded += new CollectionItemsChangedEventHandler<IndexedItem<IOptimizer>>(Optimizers_ItemsAdded);
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286 | Optimizers.ItemsRemoved += new CollectionItemsChangedEventHandler<IndexedItem<IOptimizer>>(Optimizers_ItemsRemoved);
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287 | Optimizers.ItemsReplaced += new CollectionItemsChangedEventHandler<IndexedItem<IOptimizer>>(Optimizers_ItemsReplaced);
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288 | }
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289 | private void DeregisterOptimizersEvents() {
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290 | Optimizers.CollectionReset -= new CollectionItemsChangedEventHandler<IndexedItem<IOptimizer>>(Optimizers_CollectionReset);
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291 | Optimizers.ItemsAdded -= new CollectionItemsChangedEventHandler<IndexedItem<IOptimizer>>(Optimizers_ItemsAdded);
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292 | Optimizers.ItemsRemoved -= new CollectionItemsChangedEventHandler<IndexedItem<IOptimizer>>(Optimizers_ItemsRemoved);
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293 | Optimizers.ItemsReplaced -= new CollectionItemsChangedEventHandler<IndexedItem<IOptimizer>>(Optimizers_ItemsReplaced);
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294 | }
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295 | private void Optimizers_CollectionReset(object sender, CollectionItemsChangedEventArgs<IndexedItem<IOptimizer>> e) {
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296 | foreach (IndexedItem<IOptimizer> item in e.OldItems)
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297 | RemoveOptimizer(item.Value);
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298 | foreach (IndexedItem<IOptimizer> item in e.Items)
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299 | AddOptimizer(item.Value);
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300 | }
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301 | private void Optimizers_ItemsAdded(object sender, CollectionItemsChangedEventArgs<IndexedItem<IOptimizer>> e) {
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302 | foreach (IndexedItem<IOptimizer> item in e.Items)
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303 | AddOptimizer(item.Value);
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304 | }
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305 | private void Optimizers_ItemsRemoved(object sender, CollectionItemsChangedEventArgs<IndexedItem<IOptimizer>> e) {
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306 | foreach (IndexedItem<IOptimizer> item in e.Items)
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307 | RemoveOptimizer(item.Value);
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308 | }
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309 | private void Optimizers_ItemsReplaced(object sender, CollectionItemsChangedEventArgs<IndexedItem<IOptimizer>> e) {
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310 | foreach (IndexedItem<IOptimizer> item in e.OldItems)
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311 | RemoveOptimizer(item.Value);
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312 | foreach (IndexedItem<IOptimizer> item in e.Items)
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313 | AddOptimizer(item.Value);
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314 | }
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315 | private void AddOptimizer(IOptimizer optimizer) {
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316 | RegisterOptimizerEvents(optimizer);
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317 | Runs.AddRange(optimizer.Runs);
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318 | optimizer.Prepare();
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319 | if (ExecutionState == ExecutionState.Stopped && optimizer.ExecutionState == ExecutionState.Prepared)
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320 | OnPrepared();
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321 | }
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322 | private void RemoveOptimizer(IOptimizer optimizer) {
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323 | DeregisterOptimizerEvents(optimizer);
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324 | Runs.RemoveRange(optimizer.Runs);
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325 | if (ExecutionState == ExecutionState.Prepared && !optimizers.Any(opt => opt.ExecutionState == ExecutionState.Prepared))
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326 | OnStopped();
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327 | }
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328 |
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329 | private void RegisterOptimizerEvents(IOptimizer optimizer) {
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330 | optimizer.ExceptionOccurred += new EventHandler<EventArgs<Exception>>(optimizer_ExceptionOccurred);
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331 | optimizer.ExecutionTimeChanged += new EventHandler(optimizer_ExecutionTimeChanged);
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332 | optimizer.Paused += new EventHandler(optimizer_Paused);
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333 | optimizer.Prepared += new EventHandler(optimizer_Prepared);
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334 | optimizer.Started += new EventHandler(optimizer_Started);
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335 | optimizer.Stopped += new EventHandler(optimizer_Stopped);
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336 | optimizer.Runs.CollectionReset += new CollectionItemsChangedEventHandler<IRun>(optimizer_Runs_CollectionReset);
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337 | optimizer.Runs.ItemsAdded += new CollectionItemsChangedEventHandler<IRun>(optimizer_Runs_ItemsAdded);
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338 | optimizer.Runs.ItemsRemoved += new CollectionItemsChangedEventHandler<IRun>(optimizer_Runs_ItemsRemoved);
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339 | }
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340 | private void DeregisterOptimizerEvents(IOptimizer optimizer) {
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341 | optimizer.ExceptionOccurred -= new EventHandler<EventArgs<Exception>>(optimizer_ExceptionOccurred);
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342 | optimizer.ExecutionTimeChanged -= new EventHandler(optimizer_ExecutionTimeChanged);
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343 | optimizer.Paused -= new EventHandler(optimizer_Paused);
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344 | optimizer.Prepared -= new EventHandler(optimizer_Prepared);
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345 | optimizer.Started -= new EventHandler(optimizer_Started);
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346 | optimizer.Stopped -= new EventHandler(optimizer_Stopped);
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347 | optimizer.Runs.CollectionReset -= new CollectionItemsChangedEventHandler<IRun>(optimizer_Runs_CollectionReset);
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348 | optimizer.Runs.ItemsAdded -= new CollectionItemsChangedEventHandler<IRun>(optimizer_Runs_ItemsAdded);
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349 | optimizer.Runs.ItemsRemoved -= new CollectionItemsChangedEventHandler<IRun>(optimizer_Runs_ItemsRemoved);
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350 | }
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351 |
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352 | private readonly object locker = new object();
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353 | private readonly object runsLocker = new object();
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354 | private void optimizer_ExceptionOccurred(object sender, EventArgs<Exception> e) {
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355 | lock (locker)
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356 | OnExceptionOccurred(e.Value);
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357 | }
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358 | private void optimizer_ExecutionTimeChanged(object sender, EventArgs e) {
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359 | // only wait for maximally 100ms to acquire lock, otherwise return and don't update the execution time
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360 | var success = Monitor.TryEnter(locker, 100);
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361 | if (!success) return;
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362 | try {
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363 | ExecutionTime = Optimizers.Aggregate(TimeSpan.Zero, (t, o) => t + o.ExecutionTime);
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364 | } finally {
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365 | Monitor.Exit(locker);
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366 | }
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367 | }
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368 | private void optimizer_Paused(object sender, EventArgs e) {
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369 | lock (locker)
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370 | if (Optimizers.All(x => x.ExecutionState != ExecutionState.Started)) OnPaused();
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371 | }
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372 | private void optimizer_Prepared(object sender, EventArgs e) {
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373 | lock (locker)
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374 | if (Optimizers.All(x => x.ExecutionState == ExecutionState.Prepared)) OnPrepared();
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375 | }
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376 | private void optimizer_Started(object sender, EventArgs e) {
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377 | lock (locker)
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378 | if (ExecutionState != ExecutionState.Started) OnStarted();
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379 | }
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380 | private void optimizer_Stopped(object sender, EventArgs e) {
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381 | lock (locker) {
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382 | if (experimentStopped) {
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383 | if (Optimizers.All(x => (x.ExecutionState == ExecutionState.Stopped) || (x.ExecutionState == ExecutionState.Prepared))) OnStopped();
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384 | } else {
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385 | if (experimentStarted && Optimizers.Any(x => (x.ExecutionState == ExecutionState.Prepared) || (x.ExecutionState == ExecutionState.Paused))) return;
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386 | else if (Optimizers.All(x => x.ExecutionState == ExecutionState.Stopped)) OnStopped();
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387 | else if (Optimizers.Any(x => (x.ExecutionState == ExecutionState.Prepared) || (x.ExecutionState == ExecutionState.Paused)) && Optimizers.All(o => o.ExecutionState != ExecutionState.Started)) OnPaused();
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388 | }
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389 | }
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390 | }
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391 | private void optimizer_Runs_CollectionReset(object sender, CollectionItemsChangedEventArgs<IRun> e) {
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392 | lock (runsLocker) {
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393 | Runs.RemoveRange(e.OldItems);
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394 | Runs.AddRange(e.Items);
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395 | }
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396 | }
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397 | private void optimizer_Runs_ItemsAdded(object sender, CollectionItemsChangedEventArgs<IRun> e) {
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398 | lock (runsLocker)
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399 | Runs.AddRange(e.Items);
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400 | }
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401 | private void optimizer_Runs_ItemsRemoved(object sender, CollectionItemsChangedEventArgs<IRun> e) {
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402 | lock (runsLocker)
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403 | Runs.RemoveRange(e.Items);
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404 | }
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405 |
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406 | private void RegisterRunsEvents() {
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407 | runs.CollectionReset += new CollectionItemsChangedEventHandler<IRun>(Runs_CollectionReset);
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408 | runs.ItemsRemoved += new CollectionItemsChangedEventHandler<IRun>(Runs_ItemsRemoved);
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409 | }
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410 | private void DeregisterRunsEvents() {
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411 | runs.CollectionReset -= new CollectionItemsChangedEventHandler<IRun>(Runs_CollectionReset);
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412 | runs.ItemsRemoved -= new CollectionItemsChangedEventHandler<IRun>(Runs_ItemsRemoved);
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413 | }
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414 | private void Runs_CollectionReset(object sender, CollectionItemsChangedEventArgs<IRun> e) {
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415 | foreach (IOptimizer optimizer in Optimizers)
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416 | optimizer.Runs.RemoveRange(e.OldItems);
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417 | }
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418 | private void Runs_ItemsRemoved(object sender, CollectionItemsChangedEventArgs<IRun> e) {
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419 | foreach (IOptimizer optimizer in Optimizers)
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420 | optimizer.Runs.RemoveRange(e.Items);
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421 | }
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422 | #endregion
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423 | }
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424 | }
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