69 lines
1.9 KiB
C#
69 lines
1.9 KiB
C#
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using System;
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using System.Threading;
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namespace Swan.Threading
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{
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/// <summary>
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/// Acts as a <see cref="CancellationTokenSource"/> but with reusable tokens.
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/// </summary>
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public sealed class CancellationTokenOwner : IDisposable
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{
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private readonly object _syncLock = new object();
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private bool _isDisposed;
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private CancellationTokenSource _tokenSource = new CancellationTokenSource();
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/// <summary>
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/// Gets the token of the current.
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/// </summary>
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public CancellationToken Token
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{
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get
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{
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lock (_syncLock)
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{
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return _isDisposed
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? CancellationToken.None
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: _tokenSource.Token;
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}
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}
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}
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/// <summary>
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/// Cancels the last referenced token and creates a new token source.
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/// </summary>
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public void Cancel()
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{
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lock (_syncLock)
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{
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if (_isDisposed) return;
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_tokenSource.Cancel();
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_tokenSource.Dispose();
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_tokenSource = new CancellationTokenSource();
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}
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}
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/// <inheritdoc />
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public void Dispose() => Dispose(true);
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/// <summary>
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/// Releases unmanaged and - optionally - managed resources.
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/// </summary>
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/// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
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private void Dispose(bool disposing)
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{
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lock (_syncLock)
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{
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if (_isDisposed) return;
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if (disposing)
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{
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_tokenSource.Cancel();
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_tokenSource.Dispose();
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}
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_isDisposed = true;
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}
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}
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}
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}
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