source: trunk/HeuristicLab.SequentialEngine/3.3/SequentialEngine.cs @ 17180

Last change on this file since 17180 was 17180, checked in by swagner, 3 years ago

#2875: Removed years in copyrights

File size: 2.6 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 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
22using System;
23using System.Threading;
24using HeuristicLab.Common;
25using HeuristicLab.Core;
26using HEAL.Attic;
27
28namespace HeuristicLab.SequentialEngine {
29  /// <summary>
30  /// Engine for sequential execution of algorithms.
31  /// </summary>
32  [StorableType("2100B28B-18B3-41F5-B8A2-1DD009ADF4A9")]
33  [Item("Sequential Engine", "Engine for sequential execution of algorithms.")]
34  public class SequentialEngine : Engine {
35    [StorableConstructor]
36    protected SequentialEngine(StorableConstructorFlag _) : base(_) { }
37    protected SequentialEngine(SequentialEngine original, Cloner cloner) : base(original, cloner) { }
38    public SequentialEngine() : base() { }
39
40    public override IDeepCloneable Clone(Cloner cloner) {
41      return new SequentialEngine(this, cloner);
42    }
43
44    protected override void Run(CancellationToken cancellationToken) {
45      IOperation next;
46      OperationCollection coll;
47      IAtomicOperation operation;
48
49      while (ExecutionStack.Count > 0) {
50        cancellationToken.ThrowIfCancellationRequested();
51
52        next = ExecutionStack.Pop();
53        if (next is OperationCollection) {
54          coll = (OperationCollection)next;
55          for (int i = coll.Count - 1; i >= 0; i--)
56            if (coll[i] != null) ExecutionStack.Push(coll[i]);
57        } else if (next is IAtomicOperation) {
58          operation = (IAtomicOperation)next;
59          try {
60            next = operation.Operator.Execute((IExecutionContext)operation, cancellationToken);
61          }
62          catch (Exception ex) {
63            ExecutionStack.Push(operation);
64            if (ex is OperationCanceledException) throw;
65            else throw new OperatorExecutionException(operation.Operator, ex);
66          }
67          if (next != null) ExecutionStack.Push(next);
68        }
69      }
70    }
71  }
72}
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