1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2011 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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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.Linq;
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25 | using System.Text;
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26 | using System.Net;
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27 | using System.Net.Sockets;
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28 | using System.ServiceModel;
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29 | using System.ServiceModel.Description;
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30 | using HeuristicLab.Operators.MPISupport;
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31 | using HeuristicLab.Optimization;
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32 | using HeuristicLab.Core;
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33 | using System.Threading;
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34 |
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35 | namespace HeuristicLab.MPIAlgorithmRunner {
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36 | [ServiceBehavior(InstanceContextMode = InstanceContextMode.Single)]
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37 | class AlgorithmBroker: IAlgorithmBroker {
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38 | private static int FindFreeTcpPort() {
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39 | TcpListener l = new TcpListener(IPAddress.Parse("127.0.0.1"), 0);
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40 | l.Start();
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41 | int port = ((IPEndPoint)l.LocalEndpoint).Port;
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42 | l.Stop();
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43 | return port;
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44 | }
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45 |
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46 | private static ServiceHost CreateService(MPI.Communicator communicator) {
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47 | AlgorithmBroker broker = new AlgorithmBroker(communicator);
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48 | ServiceHost service = new ServiceHost(broker);
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49 |
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50 | ContractDescription contract = ContractDescription.GetContract(typeof(IAlgorithmBroker));
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51 | contract.ContractType = typeof(IAlgorithmBroker);
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52 | ServiceEndpoint endpoint = new ServiceEndpoint(contract);
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53 | endpoint.Name = "AlgorithmBrokerEndpoint";
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54 | NetTcpBinding netTCPBinding = new NetTcpBinding(SecurityMode.None);
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55 | endpoint.Binding = netTCPBinding;
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56 | int port = FindFreeTcpPort();
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57 | endpoint.Address = new EndpointAddress("net.tcp://localhost:" + port + "/AlgorithmBroker");
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58 | service.AddServiceEndpoint(endpoint);
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59 |
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60 | return service;
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61 | }
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62 |
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63 | public static ServiceHost StartService(MPI.Communicator communicator) {
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64 | try {
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65 | ServiceHost service = CreateService(communicator);
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66 |
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67 | service.Open();
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68 |
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69 | return service;
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70 | }
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71 | catch (AddressAlreadyInUseException) {
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72 | return StartService(communicator);
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73 | }
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74 | }
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75 |
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76 | private MPI.Communicator communicator;
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77 |
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78 | public AlgorithmBroker(MPI.Communicator communicator) {
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79 | this.communicator = communicator;
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80 | ExitWaitHandle = new EventWaitHandle(false, EventResetMode.ManualReset);
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81 | }
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82 |
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83 | #region IAlgorithmBroker Members
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84 |
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85 | public void TransmitAlgorithm(MPITransportWrapper<IAlgorithm> algorithm) {
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86 | Console.WriteLine("Transmitting Algorithm...");
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87 | int clients = MPI.Communicator.world.Group.Size;
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88 |
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89 | for(int i = 0; i < clients; i++) {
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90 | int client = i + 1;
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91 | communicator.Send<MPITransportWrapper<IAlgorithm>>(algorithm, client, 0);
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92 | }
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93 | }
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94 |
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95 | public ItemList<ResultCollection> Results { get; set; }
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96 |
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97 | public MPITransportWrapper<ItemList<ResultCollection>> GetResults() {
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98 | Console.WriteLine("Transmitting Results...");
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99 | return new MPITransportWrapper<ItemList<ResultCollection>>(Results);
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100 | }
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101 |
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102 | public EventWaitHandle ExitWaitHandle { get; private set; }
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103 |
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104 | public bool Terminated { get; set; }
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105 |
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106 | public bool IsAlgorithmTerminated() {
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107 | lock (ExitWaitHandle) {
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108 | if (Terminated)
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109 | ExitWaitHandle.Set();
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110 | return Terminated;
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111 | }
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112 | }
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113 | #endregion
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114 | }
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115 | }
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