reactive/Ix.NET/Source/System.Interactive.Async/System/Linq/Operators/Disposables.cs

// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT License.
// See the LICENSE file in the project root for more information. 

using System.Threading;

namespace System.Linq
{
    internal sealed class CancellationTokenDisposable : IDisposable
    {
        private readonly CancellationTokenSource _cts = new();

        public CancellationToken Token => _cts.Token;

        public void Dispose()
        {
            if (!_cts.IsCancellationRequested)
            {
                _cts.Cancel();
            }
        }
    }
}