34 lines
1.1 KiB
C#
34 lines
1.1 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="DisposableAction.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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//------------------------------------------------------------------------------
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namespace System.Web.Util {
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using System;
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using System.Threading;
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// Helper class for wrapping a continuation inside an IDisposable.
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// This class is thread-safe.
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internal sealed class DisposableAction : IDisposable {
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public static readonly DisposableAction Empty = new DisposableAction(null);
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private Action _disposeAction;
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public DisposableAction(Action disposeAction) {
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_disposeAction = disposeAction;
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}
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public void Dispose() {
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// Interlocked allows the continuation to be executed only once
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Action continuation = Interlocked.Exchange(ref _disposeAction, null);
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if (continuation != null) {
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continuation();
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}
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}
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}
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}
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