[5617] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[11203] | 3 | * Copyright (C) 2002-2012 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[5617] | 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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[6466] | 23 | using System.Threading;
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| 24 | using System.Threading.Tasks;
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[5617] | 25 | using HeuristicLab.Common;
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| 26 | using HeuristicLab.Optimization;
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| 27 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 28 | using HeuristicLab.Problems.DataAnalysis;
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| 29 |
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| 30 | namespace HeuristicLab.Algorithms.DataAnalysis {
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| 31 | [StorableClass]
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| 32 | public abstract class FixedDataAnalysisAlgorithm<T> : Algorithm,
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| 33 | IDataAnalysisAlgorithm<T>,
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| 34 | IStorableContent
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| 35 | where T : class, IDataAnalysisProblem {
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| 36 | public string Filename { get; set; }
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| 37 |
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| 38 | #region Properties
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| 39 | public override Type ProblemType {
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| 40 | get { return typeof(T); }
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| 41 | }
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| 42 | public new T Problem {
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| 43 | get { return (T)base.Problem; }
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| 44 | set { base.Problem = value; }
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| 45 | }
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| 46 | [Storable]
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| 47 | private ResultCollection results;
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| 48 | public override ResultCollection Results {
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| 49 | get { return results; }
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| 50 | }
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| 51 | #endregion
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[6466] | 52 |
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[5661] | 53 | private DateTime lastUpdateTime;
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[5617] | 54 |
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| 55 | [StorableConstructor]
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| 56 | protected FixedDataAnalysisAlgorithm(bool deserializing) : base(deserializing) { }
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| 57 | protected FixedDataAnalysisAlgorithm(FixedDataAnalysisAlgorithm<T> original, Cloner cloner)
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| 58 | : base(original, cloner) {
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| 59 | results = cloner.Clone(original.Results);
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| 60 | }
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| 61 | public FixedDataAnalysisAlgorithm()
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| 62 | : base() {
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| 63 | results = new ResultCollection();
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| 64 | }
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| 65 |
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| 66 | public override void Prepare() {
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| 67 | if (Problem != null) base.Prepare();
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| 68 | results.Clear();
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| 69 | OnPrepared();
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| 70 | }
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| 71 |
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| 72 | public override void Start() {
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| 73 | base.Start();
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[5661] | 74 | var cancellationTokenSource = new CancellationTokenSource();
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| 75 |
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[5617] | 76 | OnStarted();
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[5661] | 77 | Task task = Task.Factory.StartNew(Run, cancellationTokenSource.Token, cancellationTokenSource.Token);
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| 78 | task.ContinueWith(t => {
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| 79 | try {
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| 80 | t.Wait();
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| 81 | }
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| 82 | catch (AggregateException ex) {
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| 83 | try {
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| 84 | ex.Flatten().Handle(x => x is OperationCanceledException);
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| 85 | }
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| 86 | catch (AggregateException remaining) {
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| 87 | if (remaining.InnerExceptions.Count == 1) OnExceptionOccurred(remaining.InnerExceptions[0]);
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| 88 | else OnExceptionOccurred(remaining);
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| 89 | }
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| 90 | }
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| 91 | cancellationTokenSource.Dispose();
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| 92 | cancellationTokenSource = null;
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| 93 | OnStopped();
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| 94 | });
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| 95 | }
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| 96 | private void Run(object state) {
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| 97 | CancellationToken cancellationToken = (CancellationToken)state;
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[9343] | 98 | lastUpdateTime = DateTime.UtcNow;
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[5661] | 99 | System.Timers.Timer timer = new System.Timers.Timer(250);
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| 100 | timer.AutoReset = true;
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| 101 | timer.Elapsed += new System.Timers.ElapsedEventHandler(timer_Elapsed);
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| 102 | timer.Start();
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[5649] | 103 | try {
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| 104 | Run();
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| 105 | }
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| 106 | finally {
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[5661] | 107 | timer.Elapsed -= new System.Timers.ElapsedEventHandler(timer_Elapsed);
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| 108 | timer.Stop();
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[9343] | 109 | ExecutionTime += DateTime.UtcNow - lastUpdateTime;
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[5649] | 110 | }
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[5661] | 111 |
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| 112 | cancellationToken.ThrowIfCancellationRequested();
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[5617] | 113 | }
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[5661] | 114 | protected abstract void Run();
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[5617] | 115 | #region Events
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| 116 | protected override void OnProblemChanged() {
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| 117 | Problem.Reset += new EventHandler(Problem_Reset);
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| 118 | base.OnProblemChanged();
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| 119 | }
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[5661] | 120 | private void timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e) {
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| 121 | System.Timers.Timer timer = (System.Timers.Timer)sender;
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| 122 | timer.Enabled = false;
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[9343] | 123 | DateTime now = DateTime.UtcNow;
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[5661] | 124 | ExecutionTime += now - lastUpdateTime;
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| 125 | lastUpdateTime = now;
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| 126 | timer.Enabled = true;
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| 127 | }
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[5617] | 128 | #endregion
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| 129 |
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| 130 | }
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| 131 | }
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