1  #region License Information


2  /* HeuristicLab


3  * Copyright (C) 20022011 Heuristic and Evolutionary Algorithms Laboratory (HEAL)


4  *


5  * This file is part of HeuristicLab.


6  *


7  * HeuristicLab is free software: you can redistribute it and/or modify


8  * it under the terms of the GNU General Public License as published by


9  * the Free Software Foundation, either version 3 of the License, or


10  * (at your option) any later version.


11  *


12  * HeuristicLab is distributed in the hope that it will be useful,


13  * but WITHOUT ANY WARRANTY; without even the implied warranty of


14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the


15  * GNU General Public License for more details.


16  *


17  * You should have received a copy of the GNU General Public License


18  * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.


19  */


20  #endregion


21 


22  using System;


23  using System.Threading;


24  using HeuristicLab.Core;


25  using HeuristicLab.Optimization;


26 


27  namespace HeuristicLab_33.Tests {


28  public static class AlgorithmExtensions {


29  public static void StartSync(this IAlgorithm algorithm, CancellationToken cancellationToken) {


30  var executor = new AlgorithmExecutor(algorithm, cancellationToken);


31  executor.StartSync();


32  }


33  }


34 


35  /// <summary>


36  /// Can execute an algorithm synchronously


37  /// </summary>


38  internal class AlgorithmExecutor {


39  private IAlgorithm algorithm;


40  private AutoResetEvent waitHandle = new AutoResetEvent(false);


41  private CancellationToken cancellationToken;


42 


43  public AlgorithmExecutor(IAlgorithm algorithm, CancellationToken cancellationToken) {


44  this.algorithm = algorithm;


45  this.cancellationToken = cancellationToken;


46  }


47 


48  public void StartSync() {


49  algorithm.Stopped += new EventHandler(algorithm_Stopped);


50  algorithm.Paused += new EventHandler(algorithm_Paused);


51 


52  using (CancellationTokenRegistration registration = cancellationToken.Register(new Action(cancellationToken_Canceled))) {


53  algorithm.Start();


54  waitHandle.WaitOne();


55  waitHandle.Dispose();


56  }


57 


58  algorithm.Stopped = new EventHandler(algorithm_Stopped);


59  algorithm.Paused = new EventHandler(algorithm_Paused);


60  if (algorithm.ExecutionState == ExecutionState.Started) {


61  algorithm.Pause();


62  }


63  cancellationToken.ThrowIfCancellationRequested();


64  }


65 


66  private void algorithm_Paused(object sender, EventArgs e) {


67  waitHandle.Set();


68  }


69 


70  private void algorithm_Stopped(object sender, EventArgs e) {


71  waitHandle.Set();


72  }


73 


74  private void cancellationToken_Canceled() {


75  waitHandle.Set();


76  }


77  }


78  }

