Daniel Grunwald
13 years ago
17 changed files with 211 additions and 12 deletions
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// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
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// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
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using System; |
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using System.Threading; |
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using System.Threading.Tasks; |
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namespace ICSharpCode.SharpDevelop |
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{ |
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/// <summary>
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/// Service that manages the IDE shutdown, and any questions.
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/// </summary>
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public interface IShutdownService |
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{ |
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/// <summary>
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/// Attemps to close the IDE.
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/// </summary>
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/// <remarks>
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/// This method will
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/// - Check if <see cref="PreventShutdown"/> was called and abort the shutdown if it was.
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/// - Prompt the user to save the open files. The user has the option to cancel the shutdown at that point.
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/// - Closes the solution.
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/// - Signals the <see cref="ShutdownToken"/>.
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/// - Disposes pads
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/// - Wait for background tasks (<see cref="AddBackgroundTask"/>) to finish.
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/// - Disposes services
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/// - Saves the PropertyService
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///
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/// This method must be called on the main thread.
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/// </remarks>
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bool Shutdown(); |
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/// <summary>
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/// Prevents shutdown with the following reason.
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/// Dispose the returned value to allow shutdown again.
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/// </summary>
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/// <param name="reason">The reason. This parameter will be passed through the StringParser when the reason is displayed to the user.</param>
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/// <exception cref="InvalidOperationException">Shutdown is already in progress</exception>
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/// <remarks>This method is thread-safe.</remarks>
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IDisposable PreventShutdown(string reason); |
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/// <summary>
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/// Gets the current reason that prevents shutdown.
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/// If there isn't any reason, returns null.
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/// If there are multiple reasons, this returns one of them.
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/// </summary>
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/// <remarks>This method is thread-safe.</remarks>
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string CurrentReasonPreventingShutdown { get; } |
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/// <summary>
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/// Gets a cancellation token that gets signalled when SharpDevelop is shutting down.
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/// </summary>
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CancellationToken ShutdownToken { get; } |
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/// <summary>
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/// Adds a background task on which SharpDevelop should wait on shutdown.
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///
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/// Use this method for tasks that asynchronously write state to disk and should not be
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/// interrupted by SharpDevelop closing down.
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/// </summary>
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void AddBackgroundTask(Task task); |
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} |
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} |
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// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
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// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
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using System; |
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using System.Collections.Generic; |
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using System.Threading.Tasks; |
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namespace ICSharpCode.SharpDevelop.Util |
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{ |
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/// <summary>
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/// Scheduler for IO-intensive tasks.
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/// </summary>
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public class IOTaskScheduler |
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{ |
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// TODO: use a limited-concurrency scheduler instead
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public static TaskFactory Factory { |
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get { return Task.Factory; } |
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} |
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} |
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} |
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// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
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// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
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using System; |
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using System.Collections.Generic; |
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using System.Linq; |
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using System.Threading; |
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using System.Threading.Tasks; |
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using ICSharpCode.NRefactory.Utils; |
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namespace ICSharpCode.SharpDevelop.Workbench |
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{ |
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sealed class ShutdownService : IShutdownService |
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{ |
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CancellationTokenSource cts = new CancellationTokenSource(); |
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public CancellationToken ShutdownToken { |
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get { return cts.Token; } |
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} |
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internal void SignalShutdownToken() |
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{ |
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cts.Cancel(); |
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} |
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public bool Shutdown() |
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{ |
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SD.Workbench.MainWindow.Close(); |
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return SD.Workbench.WorkbenchLayout == null; |
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} |
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#region PreventShutdown
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List<string> reasonsPreventingShutdown = new List<string>(); |
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public IDisposable PreventShutdown(string reason) |
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{ |
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lock (reasonsPreventingShutdown) { |
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reasonsPreventingShutdown.Add(reason); |
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} |
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return new CallbackOnDispose( |
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delegate { |
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lock (reasonsPreventingShutdown) { |
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reasonsPreventingShutdown.Remove(reason); |
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} |
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}); |
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} |
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public string CurrentReasonPreventingShutdown { |
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get { |
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lock (reasonsPreventingShutdown) { |
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return reasonsPreventingShutdown.FirstOrDefault(); |
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} |
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} |
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} |
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#endregion
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#region Background Tasks
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int outstandingBackgroundTasks; |
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ManualResetEventSlim backgroundTaskEvent = new ManualResetEventSlim(true); |
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public void AddBackgroundTask(Task task) |
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{ |
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backgroundTaskEvent.Reset(); |
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Interlocked.Increment(ref outstandingBackgroundTasks); |
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task.ContinueWith( |
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delegate { |
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if (Interlocked.Decrement(ref outstandingBackgroundTasks) == 0) { |
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backgroundTaskEvent.Set(); |
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} |
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}); |
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} |
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internal void WaitForBackgroundTasks() |
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{ |
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if (!backgroundTaskEvent.IsSet) { |
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SD.LoggingService.Info("Waiting for background tasks to finish..."); |
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backgroundTaskEvent.Wait(); |
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SD.LoggingService.Info("Background tasks have finished."); |
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} |
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} |
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#endregion
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} |
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} |
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