[8955] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[16956] | 3 | * Copyright (C) 2002-2019 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[8955] | 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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[15330] | 27 | using System.Threading;
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[8956] | 28 | using System.Threading.Tasks;
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[16956] | 29 | using HEAL.Attic;
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[8955] | 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 |
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| 35 | namespace HeuristicLab.Optimization {
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| 36 | /// <summary>
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| 37 | /// A run in which an algorithm is executed for a certain maximum time only.
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| 38 | /// </summary>
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[12625] | 39 | [Item("Timelimit Run", "A run in which an optimizer is executed a certain maximum time.")]
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| 40 | [Creatable(CreatableAttribute.Categories.TestingAndAnalysis, Priority = 115)]
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[16956] | 41 | [StorableType("85A1AB82-689F-4925-B888-B3886707BE88")]
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[8955] | 42 | public sealed class TimeLimitRun : NamedItem, IOptimizer, IStorableContent, INotifyPropertyChanged {
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| 43 | public string Filename { get; set; }
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| 44 |
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| 45 | #region ItemImage
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| 46 | public static new Image StaticItemImage {
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| 47 | get { return VSImageLibrary.Event; }
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| 48 | }
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| 49 | public override Image ItemImage {
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| 50 | get { return (Algorithm != null) ? Algorithm.ItemImage : VSImageLibrary.ExecutableStopped; }
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| 51 | }
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| 52 | #endregion
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| 53 |
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[8975] | 54 | private bool pausedForSnapshot = false;
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| 55 | private bool pausedForTermination = false;
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[8955] | 56 |
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| 57 | [Storable]
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| 58 | private TimeSpan maximumExecutionTime;
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| 59 | public TimeSpan MaximumExecutionTime {
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| 60 | get { return maximumExecutionTime; }
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| 61 | set {
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| 62 | if (maximumExecutionTime == value) return;
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| 63 | maximumExecutionTime = value;
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[16956] | 64 | OnPropertyChanged(nameof(MaximumExecutionTime));
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[8955] | 65 | }
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| 66 | }
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| 67 |
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| 68 | [Storable]
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| 69 | private int snapshotTimesIndex;
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| 70 | [Storable]
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[8961] | 71 | private ObservableList<TimeSpan> snapshotTimes;
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| 72 | public ObservableList<TimeSpan> SnapshotTimes {
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[8955] | 73 | get { return snapshotTimes; }
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| 74 | set {
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| 75 | if (snapshotTimes == value) return;
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| 76 | snapshotTimes = value;
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[8975] | 77 | snapshotTimes.Sort();
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| 78 | FindNextSnapshotTimeIndex(ExecutionTime);
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[16956] | 79 | OnPropertyChanged(nameof(SnapshotTimes));
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[8955] | 80 | }
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| 81 | }
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| 82 |
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| 83 | [Storable]
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| 84 | private bool storeAlgorithmInEachSnapshot;
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| 85 | [Storable]
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| 86 | public bool StoreAlgorithmInEachSnapshot {
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| 87 | get { return storeAlgorithmInEachSnapshot; }
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| 88 | set {
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| 89 | if (storeAlgorithmInEachSnapshot == value) return;
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| 90 | storeAlgorithmInEachSnapshot = value;
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[16956] | 91 | OnPropertyChanged(nameof(StoreAlgorithmInEachSnapshot));
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[8955] | 92 | }
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| 93 | }
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| 94 |
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| 95 | [Storable]
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| 96 | private RunCollection snapshots;
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| 97 | public RunCollection Snapshots {
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| 98 | get { return snapshots; }
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| 99 | set {
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| 100 | if (snapshots == value) return;
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| 101 | snapshots = value;
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[16956] | 102 | OnPropertyChanged(nameof(Snapshots));
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[8955] | 103 | }
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| 104 | }
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| 105 |
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| 106 | #region Inherited Properties
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[16956] | 107 | [Storable]
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| 108 | private ExecutionState executionState;
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[8955] | 109 | public ExecutionState ExecutionState {
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[16956] | 110 | get { return executionState; }
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| 111 | private set {
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| 112 | if (executionState == value) return;
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| 113 | executionState = value;
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| 114 | OnExecutionStateChanged();
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| 115 | OnPropertyChanged(nameof(ExecutionState));
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| 116 | }
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[8955] | 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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[16956] | 129 | if (ExecutionState == ExecutionState.Started || ExecutionState == ExecutionState.Paused)
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| 130 | throw new InvalidOperationException("Cannot change algorithm while the TimeLimitRun is running or paused.");
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[8956] | 131 | if (algorithm != null) DeregisterAlgorithmEvents();
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[8955] | 132 | algorithm = value;
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[16956] | 133 | if (algorithm != null) RegisterAlgorithmEvents();
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| 134 | OnPropertyChanged(nameof(Algorithm));
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| 135 | OnPropertyChanged(nameof(NestedOptimizers));
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[8955] | 136 | if (algorithm != null) {
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[16956] | 137 | if (algorithm.ExecutionState == ExecutionState.Started || algorithm.ExecutionState == ExecutionState.Paused)
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| 138 | throw new InvalidOperationException("Cannot assign a running or paused algorithm to a TimeLimitRun.");
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| 139 | Prepare();
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| 140 | if (algorithm.ExecutionState == ExecutionState.Stopped) OnStopped();
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| 141 | } else OnStopped();
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[8955] | 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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[16956] | 153 | OnPropertyChanged(nameof(Runs));
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[8955] | 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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[16956] | 168 | private TimeLimitRun(StorableConstructorFlag _) : base(_) { }
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[8955] | 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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[8961] | 172 | snapshotTimes = new ObservableList<TimeSpan>(original.snapshotTimes);
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[8955] | 173 | snapshotTimesIndex = original.snapshotTimesIndex;
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[8956] | 174 | snapshots = cloner.Clone(original.snapshots);
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| 175 | storeAlgorithmInEachSnapshot = original.storeAlgorithmInEachSnapshot;
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[16956] | 176 | executionState = original.executionState;
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[8956] | 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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[8955] | 180 | Initialize();
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| 181 | }
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| 182 | public TimeLimitRun()
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| 183 | : base() {
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| 184 | name = ItemName;
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| 185 | description = ItemDescription;
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[16956] | 186 | executionState = ExecutionState.Stopped;
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[8975] | 187 | maximumExecutionTime = TimeSpan.FromMinutes(.5);
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[8961] | 188 | snapshotTimes = new ObservableList<TimeSpan>(new[] {
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| 189 | TimeSpan.FromSeconds(5),
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| 190 | TimeSpan.FromSeconds(10),
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[8975] | 191 | TimeSpan.FromSeconds(15) });
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[8955] | 192 | snapshotTimesIndex = 0;
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| 193 | snapshots = new RunCollection();
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[8975] | 194 | Runs = new RunCollection { OptimizerName = Name };
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[8956] | 195 | Initialize();
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[8955] | 196 | }
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| 197 | public TimeLimitRun(string name)
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| 198 | : base(name) {
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| 199 | description = ItemDescription;
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[16956] | 200 | executionState = ExecutionState.Stopped;
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[8975] | 201 | maximumExecutionTime = TimeSpan.FromMinutes(.5);
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[8961] | 202 | snapshotTimes = new ObservableList<TimeSpan>(new[] {
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| 203 | TimeSpan.FromSeconds(5),
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| 204 | TimeSpan.FromSeconds(10),
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[8975] | 205 | TimeSpan.FromSeconds(15) });
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[8955] | 206 | snapshotTimesIndex = 0;
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[16956] | 207 | snapshots = new RunCollection();
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[8975] | 208 | Runs = new RunCollection { OptimizerName = Name };
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[8956] | 209 | Initialize();
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[8955] | 210 | }
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| 211 | public TimeLimitRun(string name, string description)
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| 212 | : base(name, description) {
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[16956] | 213 | executionState = ExecutionState.Stopped;
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[8975] | 214 | maximumExecutionTime = TimeSpan.FromMinutes(.5);
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[8961] | 215 | snapshotTimes = new ObservableList<TimeSpan>(new[] {
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| 216 | TimeSpan.FromSeconds(5),
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| 217 | TimeSpan.FromSeconds(10),
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[8975] | 218 | TimeSpan.FromSeconds(15) });
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[8955] | 219 | snapshotTimesIndex = 0;
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[16956] | 220 | snapshots = new RunCollection();
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[8975] | 221 | Runs = new RunCollection { OptimizerName = Name };
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[8956] | 222 | Initialize();
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[8955] | 223 | }
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| 224 |
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| 225 | public override IDeepCloneable Clone(Cloner cloner) {
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| 226 | if (ExecutionState == ExecutionState.Started) throw new InvalidOperationException(string.Format("Clone not allowed in execution state \"{0}\".", ExecutionState));
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| 227 | return new TimeLimitRun(this, cloner);
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| 228 | }
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| 229 |
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| 230 | [StorableHook(HookType.AfterDeserialization)]
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| 231 | private void AfterDeserialization() {
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| 232 | Initialize();
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[16956] | 233 | // BackwardsCompatibility3.3
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| 234 | #region Backwards compatible code, remove with 3.4
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| 235 | if (Algorithm != null && executionState != Algorithm.ExecutionState) {
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| 236 | executionState = Algorithm.ExecutionState;
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| 237 | } else if (Algorithm == null) executionState = ExecutionState.Stopped;
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| 238 | #endregion
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[8955] | 239 | }
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| 240 |
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| 241 | private void Initialize() {
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| 242 | if (algorithm != null) RegisterAlgorithmEvents();
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[8956] | 243 | snapshotTimes.ItemsAdded += snapshotTimes_Changed;
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| 244 | snapshotTimes.ItemsMoved += snapshotTimes_Changed;
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| 245 | snapshotTimes.ItemsRemoved += snapshotTimes_Changed;
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| 246 | snapshotTimes.ItemsReplaced += snapshotTimes_Changed;
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| 247 | snapshotTimes.CollectionReset += snapshotTimes_Changed;
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[8955] | 248 | }
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| 249 |
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[8975] | 250 | private void snapshotTimes_Changed(object sender, CollectionItemsChangedEventArgs<IndexedItem<TimeSpan>> e) {
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| 251 | if (e.Items.Any()) snapshotTimes.Sort();
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| 252 | FindNextSnapshotTimeIndex(ExecutionTime);
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[8956] | 253 | }
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| 254 |
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| 255 | public void Snapshot() {
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[8975] | 256 | if (Algorithm == null || Algorithm.ExecutionState != ExecutionState.Paused) throw new InvalidOperationException("Snapshot not allowed in execution states other than Paused");
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| 257 | Task.Factory.StartNew(MakeSnapshot);
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[8956] | 258 | }
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| 259 |
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[8955] | 260 | public void Prepare() {
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| 261 | Prepare(false);
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| 262 | }
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| 263 | public void Prepare(bool clearRuns) {
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[16956] | 264 | if (Algorithm == null) return;
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[8955] | 265 | Algorithm.Prepare(clearRuns);
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| 266 | }
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| 267 | public void Start() {
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[15330] | 268 | Start(CancellationToken.None);
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[8955] | 269 | }
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[15330] | 270 | public void Start(CancellationToken cancellationToken) {
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| 271 | Algorithm.Start(cancellationToken);
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| 272 | }
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| 273 | public async Task StartAsync() { await StartAsync(CancellationToken.None); }
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| 274 | public async Task StartAsync(CancellationToken cancellationToken) {
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| 275 | await AsyncHelper.DoAsync(Start, cancellationToken);
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| 276 | }
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[8955] | 277 | public void Pause() {
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| 278 | Algorithm.Pause();
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| 279 | }
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| 280 | public void Stop() {
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| 281 | Algorithm.Stop();
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| 282 | }
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| 283 |
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| 284 | #region Events
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| 285 | protected override void OnNameChanged() {
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| 286 | base.OnNameChanged();
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[8975] | 287 | runs.OptimizerName = Name;
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[8955] | 288 | }
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| 289 |
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| 290 | public event PropertyChangedEventHandler PropertyChanged;
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| 291 | private void OnPropertyChanged(string property) {
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| 292 | var handler = PropertyChanged;
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| 293 | if (handler != null) handler(this, new PropertyChangedEventArgs(property));
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| 294 | }
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| 295 |
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| 296 | #region IExecutable Events
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| 297 | public event EventHandler ExecutionStateChanged;
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| 298 | private void OnExecutionStateChanged() {
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| 299 | var handler = ExecutionStateChanged;
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| 300 | if (handler != null) handler(this, EventArgs.Empty);
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| 301 | }
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| 302 | public event EventHandler ExecutionTimeChanged;
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| 303 | private void OnExecutionTimeChanged() {
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| 304 | var handler = ExecutionTimeChanged;
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| 305 | if (handler != null) handler(this, EventArgs.Empty);
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| 306 | }
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| 307 | public event EventHandler Prepared;
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| 308 | private void OnPrepared() {
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[16956] | 309 | ExecutionState = ExecutionState.Prepared;
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[8955] | 310 | var handler = Prepared;
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| 311 | if (handler != null) handler(this, EventArgs.Empty);
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| 312 | }
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| 313 | public event EventHandler Started;
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| 314 | private void OnStarted() {
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[16956] | 315 | ExecutionState = ExecutionState.Started;
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[8955] | 316 | var handler = Started;
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| 317 | if (handler != null) handler(this, EventArgs.Empty);
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| 318 | }
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| 319 | public event EventHandler Paused;
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| 320 | private void OnPaused() {
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[16956] | 321 | ExecutionState = ExecutionState.Paused;
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[8955] | 322 | var handler = Paused;
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| 323 | if (handler != null) handler(this, EventArgs.Empty);
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| 324 | }
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| 325 | public event EventHandler Stopped;
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| 326 | private void OnStopped() {
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[16956] | 327 | ExecutionState = ExecutionState.Stopped;
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[8955] | 328 | var handler = Stopped;
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| 329 | if (handler != null) handler(this, EventArgs.Empty);
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| 330 | }
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| 331 | public event EventHandler<EventArgs<Exception>> ExceptionOccurred;
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| 332 | private void OnExceptionOccurred(Exception exception) {
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[16956] | 333 | ExecutionState = ExecutionState.Paused;
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[8955] | 334 | var handler = ExceptionOccurred;
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| 335 | if (handler != null) handler(this, new EventArgs<Exception>(exception));
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| 336 | }
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| 337 | #endregion
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| 338 |
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| 339 | #region Algorithm Events
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| 340 | private void RegisterAlgorithmEvents() {
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| 341 | algorithm.ExceptionOccurred += Algorithm_ExceptionOccurred;
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| 342 | algorithm.ExecutionTimeChanged += Algorithm_ExecutionTimeChanged;
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| 343 | algorithm.Paused += Algorithm_Paused;
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| 344 | algorithm.Prepared += Algorithm_Prepared;
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| 345 | algorithm.Started += Algorithm_Started;
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| 346 | algorithm.Stopped += Algorithm_Stopped;
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| 347 | }
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| 348 | private void DeregisterAlgorithmEvents() {
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| 349 | algorithm.ExceptionOccurred -= Algorithm_ExceptionOccurred;
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| 350 | algorithm.ExecutionTimeChanged -= Algorithm_ExecutionTimeChanged;
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| 351 | algorithm.Paused -= Algorithm_Paused;
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| 352 | algorithm.Prepared -= Algorithm_Prepared;
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| 353 | algorithm.Started -= Algorithm_Started;
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| 354 | algorithm.Stopped -= Algorithm_Stopped;
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| 355 | }
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| 356 | private void Algorithm_ExceptionOccurred(object sender, EventArgs<Exception> e) {
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| 357 | OnExceptionOccurred(e.Value);
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| 358 | }
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| 359 | private void Algorithm_ExecutionTimeChanged(object sender, EventArgs e) {
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[8975] | 360 | if (snapshotTimesIndex < SnapshotTimes.Count && ExecutionTime >= SnapshotTimes[snapshotTimesIndex]
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| 361 | && !pausedForSnapshot) {
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| 362 | pausedForSnapshot = true;
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| 363 | Algorithm.Pause();
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| 364 | }
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| 365 | if (ExecutionTime >= MaximumExecutionTime && !pausedForTermination) {
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| 366 | pausedForTermination = true;
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| 367 | if (!pausedForSnapshot) Algorithm.Pause();
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| 368 | }
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[8955] | 369 | OnExecutionTimeChanged();
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| 370 | }
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| 371 | private void Algorithm_Paused(object sender, EventArgs e) {
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[8975] | 372 | var action = pausedForTermination ? ExecutionState.Stopped : (pausedForSnapshot ? ExecutionState.Started : ExecutionState.Paused);
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| 373 | if (pausedForSnapshot || pausedForTermination) {
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| 374 | pausedForSnapshot = pausedForTermination = false;
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| 375 | MakeSnapshot();
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[8977] | 376 | FindNextSnapshotTimeIndex(ExecutionTime);
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[16956] | 377 | } else OnPaused();
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[8975] | 378 | if (action == ExecutionState.Started) Algorithm.Start();
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| 379 | else if (action == ExecutionState.Stopped) Algorithm.Stop();
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[8955] | 380 | }
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| 381 | private void Algorithm_Prepared(object sender, EventArgs e) {
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| 382 | snapshotTimesIndex = 0;
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| 383 | snapshots.Clear();
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| 384 | OnPrepared();
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| 385 | }
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| 386 | private void Algorithm_Started(object sender, EventArgs e) {
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[16956] | 387 | if (ExecutionState == ExecutionState.Prepared || ExecutionState == ExecutionState.Paused)
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| 388 | OnStarted();
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| 389 | if (ExecutionState == ExecutionState.Stopped)
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| 390 | throw new InvalidOperationException("Algorithm was started although TimeLimitRun was in state Stopped.");
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| 391 | // otherwise the algorithm was just started after being snapshotted
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[8955] | 392 | }
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| 393 | private void Algorithm_Stopped(object sender, EventArgs e) {
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[16956] | 394 | try {
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| 395 | var cloner = new Cloner();
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| 396 | var algRun = cloner.Clone(Algorithm.Runs.Last());
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| 397 | var clonedSnapshots = cloner.Clone(snapshots);
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| 398 | algRun.Results.Add("TimeLimitRunSnapshots", clonedSnapshots);
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| 399 | Runs.Add(algRun);
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| 400 | Algorithm.Runs.Clear();
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| 401 | } finally { OnStopped(); }
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[8955] | 402 | }
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| 403 | #endregion
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| 404 | #endregion
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[8975] | 405 |
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| 406 | private void FindNextSnapshotTimeIndex(TimeSpan reference) {
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| 407 | var index = 0;
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| 408 | while (index < snapshotTimes.Count && snapshotTimes[index] <= reference) {
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| 409 | index++;
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[16956] | 410 | }
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[8975] | 411 | snapshotTimesIndex = index;
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| 412 | }
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| 413 |
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| 414 | private void MakeSnapshot() {
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| 415 | string time = Math.Round(ExecutionTime.TotalSeconds, 1).ToString("0.0");
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| 416 | string runName = "Snapshot " + time + "s " + algorithm.Name;
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[12128] | 417 | var changed = false;
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| 418 | if (StoreAlgorithmInEachSnapshot && !Algorithm.StoreAlgorithmInEachRun) {
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| 419 | Algorithm.StoreAlgorithmInEachRun = true;
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| 420 | changed = true;
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| 421 | } else if (!StoreAlgorithmInEachSnapshot && Algorithm.StoreAlgorithmInEachRun) {
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| 422 | Algorithm.StoreAlgorithmInEachRun = false;
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| 423 | changed = true;
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[8975] | 424 | }
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[12128] | 425 | var run = new Run(runName, Algorithm);
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| 426 | if (changed)
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| 427 | Algorithm.StoreAlgorithmInEachRun = !Algorithm.StoreAlgorithmInEachRun;
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| 428 |
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[8975] | 429 | snapshots.Add(run);
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| 430 | }
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[8955] | 431 | }
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| 432 | }
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