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source: branches/3.1/sources/HeuristicLab.Grid/EngineRunner.cs @ 15160

Last change on this file since 15160 was 440, checked in by gkronber, 16 years ago
  • split the GridForm class into two classes GridForm and GridClient
  • added class EngineRunner to act as the bridge between the AppDomain where engines are executed and the main AppDomain of the client.
  • GridClient creates a new AppDomain for each engine and unloads it again when the engine is finished.

(ticket #230)

File size: 2.2 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2008 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
21using System;
22using System.Collections.Generic;
23using System.Linq;
24using System.Text;
25using HeuristicLab.Core;
26using System.Threading;
27
28namespace HeuristicLab.Grid {
29  internal class EngineRunner: MarshalByRefObject {
30    private ManualResetEvent engineFinished = new ManualResetEvent(false);
31
32    internal byte[] Execute(byte[] engine) {
33      ProcessingEngine currentEngine = (ProcessingEngine)PersistenceManager.RestoreFromGZip(engine);
34      engineFinished.Reset();
35      currentEngine.Finished += new EventHandler(currentEngine_Finished);
36      currentEngine.Execute();
37     
38      engineFinished.WaitOne();
39           
40      // if the engine was stopped because of an error (not suspended because of a breakpoint)
41      // it's not necessary to return the whole engine
42      // instead just return an empty engine that has the aborted flag set
43      if(currentEngine.Canceled && !currentEngine.Suspended) {
44        currentEngine.Reset();
45        currentEngine.OperatorGraph.Clear();
46        currentEngine.Abort();
47      }
48
49      if(!currentEngine.Canceled && !currentEngine.Suspended) {
50        currentEngine.OperatorGraph.Clear();
51        currentEngine.GlobalScope.Clear();
52      }
53
54      return PersistenceManager.SaveToGZip(currentEngine);
55    }
56
57    void currentEngine_Finished(object sender, EventArgs e) {
58      engineFinished.Set();
59    }
60  }
61}
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