46 lines
1.1 KiB
C#
46 lines
1.1 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading;
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namespace Umbraco.Core
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{
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/// <summary>
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/// Provides a convenience methodology for implementing locked access to resources.
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/// </summary>
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/// <remarks>
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/// Intended as an infrastructure class.
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/// </remarks>
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public class UpgradeableReadLock : IDisposable
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{
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private readonly ReaderWriterLockSlim _rwLock;
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private bool _upgraded = false;
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/// <summary>
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/// Initializes a new instance of the <see cref="ReadLock"/> class.
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/// </summary>
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/// <param name="rwLock">The rw lock.</param>
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public UpgradeableReadLock(ReaderWriterLockSlim rwLock)
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{
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_rwLock = rwLock;
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_rwLock.EnterUpgradeableReadLock();
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}
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public void UpgradeToWriteLock()
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{
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_rwLock.EnterWriteLock();
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_upgraded = true;
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}
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void IDisposable.Dispose()
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{
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if (_upgraded)
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{
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_rwLock.ExitWriteLock();
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}
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_rwLock.ExitUpgradeableReadLock();
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}
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}
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}
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