[13080] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[14185] | 3 | * Copyright (C) 2002-2016 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[13080] | 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.Threading;
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| 24 | using HeuristicLab.Common;
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| 25 | using HeuristicLab.Core;
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[14927] | 26 | using HeuristicLab.Persistence;
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[13080] | 27 |
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| 28 | namespace HeuristicLab.Scripting {
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| 29 | [Item("Executable Script", "An executable script.")]
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[14927] | 30 | [StorableType("46e454f3-3adb-418c-9376-be96667e1d64")]
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[13080] | 31 | public abstract class ExecutableScript : Script {
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| 32 | private Thread scriptThread;
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| 33 | private DateTime lastUpdateTime;
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| 34 |
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| 35 | [Storable]
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| 36 | private TimeSpan executionTime;
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| 37 | public TimeSpan ExecutionTime {
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| 38 | get { return executionTime; }
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| 39 | protected set {
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| 40 | executionTime = value;
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| 41 | OnExecutionTimeChanged();
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| 42 | }
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| 43 | }
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| 44 |
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| 45 | public bool Running { get; protected set; }
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| 46 |
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| 47 | #region Construction & Cloning
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| 48 | [StorableConstructor]
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[15018] | 49 | protected ExecutableScript(StorableConstructorFlag deserializing) : base(deserializing) { }
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[13080] | 50 | protected ExecutableScript(ExecutableScript original, Cloner cloner)
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| 51 | : base(original, cloner) {
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| 52 | executionTime = original.executionTime;
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| 53 | }
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[13218] | 54 | protected ExecutableScript()
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[13080] | 55 | : base() {
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| 56 | executionTime = TimeSpan.Zero;
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| 57 | }
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[13218] | 58 | protected ExecutableScript(string code)
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[13080] | 59 | : base(code) {
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| 60 | executionTime = TimeSpan.Zero;
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| 61 | }
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| 62 | #endregion
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| 63 |
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| 64 | #region Execution
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| 65 | protected abstract void ExecuteCode();
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| 66 |
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| 67 | public virtual void Execute() {
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| 68 | if (Running)
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| 69 | throw new InvalidOperationException("Script is already running");
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| 70 |
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| 71 | ExecutionTime = TimeSpan.Zero;
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| 72 | Exception ex = null;
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| 73 | var timer = new System.Timers.Timer(250) { AutoReset = true };
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| 74 | timer.Elapsed += timer_Elapsed;
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| 75 | try {
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| 76 | Running = true;
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| 77 | OnScriptExecutionStarted();
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| 78 | lastUpdateTime = DateTime.UtcNow;
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| 79 | timer.Start();
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| 80 | ExecuteCode();
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| 81 | } catch (Exception e) {
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| 82 | ex = e;
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| 83 | } finally {
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| 84 | timer.Elapsed -= timer_Elapsed;
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| 85 | timer.Stop();
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[13218] | 86 | timer.Dispose();
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[13080] | 87 | ExecutionTime += DateTime.UtcNow - lastUpdateTime;
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| 88 | Running = false;
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| 89 | OnScriptExecutionFinished(ex);
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| 90 | }
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| 91 | }
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| 92 |
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| 93 | public virtual void ExecuteAsync() {
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| 94 | scriptThread = new Thread(() => {
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| 95 | try {
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| 96 | Execute();
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| 97 | } finally {
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| 98 | scriptThread = null;
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| 99 | }
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| 100 | });
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| 101 | scriptThread.SetApartmentState(ApartmentState.STA);
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| 102 | scriptThread.Start();
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| 103 | }
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| 104 |
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| 105 | public virtual void Kill() {
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| 106 | if (!Running) return;
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| 107 |
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| 108 | scriptThread.Abort();
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| 109 | }
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| 110 | #endregion
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| 111 |
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| 112 | private void timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e) {
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| 113 | var timer = (System.Timers.Timer)sender;
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| 114 | timer.Enabled = false;
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| 115 | DateTime now = DateTime.UtcNow;
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| 116 | ExecutionTime += now - lastUpdateTime;
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| 117 | lastUpdateTime = now;
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| 118 | timer.Enabled = true;
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| 119 | }
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| 120 |
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| 121 | public event EventHandler ScriptExecutionStarted;
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| 122 | protected virtual void OnScriptExecutionStarted() {
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| 123 | var handler = ScriptExecutionStarted;
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| 124 | if (handler != null) handler(this, EventArgs.Empty);
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| 125 | }
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| 126 |
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| 127 | public event EventHandler<EventArgs<Exception>> ScriptExecutionFinished;
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| 128 | protected virtual void OnScriptExecutionFinished(Exception e) {
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| 129 | var handler = ScriptExecutionFinished;
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| 130 | if (handler != null) handler(this, new EventArgs<Exception>(e));
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| 131 | }
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| 132 |
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| 133 | public event EventHandler ExecutionTimeChanged;
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| 134 | protected virtual void OnExecutionTimeChanged() {
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| 135 | var handler = ExecutionTimeChanged;
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| 136 | if (handler != null) handler(this, EventArgs.Empty);
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| 137 | }
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| 138 | }
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| 139 | }
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