63 lines
1.4 KiB
C#
63 lines
1.4 KiB
C#
using System.Collections;
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using System.Collections.Generic;
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using System.Threading;
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namespace Sicentury.Core.Collections
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{
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public sealed class SafeEnumerator<T> : IEnumerator<T>
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{
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#region variables
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// this is the (thread-unsafe)
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// enumerator of the underlying collection
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private readonly IEnumerator<T> _enumeratorInner;
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// this is the object we shall lock on.
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private readonly SemaphoreSlim _semLocker;
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#endregion
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public SafeEnumerator(IEnumerator<T> inner, SemaphoreSlim semLocker)
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{
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// entering lock in constructor
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//semLocker.Wait();
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_semLocker = semLocker;
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_enumeratorInner = inner;
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}
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#region Implementation of IDisposable
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public void Dispose()
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{
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_semLocker.Release();
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}
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#endregion
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#region Implementation of IEnumerator
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// we just delegate actual implementation
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// to the inner enumerator, that actually iterates
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// over some collection
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public bool MoveNext()
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{
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return _enumeratorInner.MoveNext();
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}
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public void Reset()
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{
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_enumeratorInner.Reset();
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}
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public T Current => _enumeratorInner.Current;
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object IEnumerator.Current => Current;
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#endregion
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}
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}
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