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// -----------------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
// -----------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
namespace Microsoft.Internal
{
internal sealed class Lock : IDisposable
{
#if (!SILVERLIGHT)
private ReaderWriterLockSlim _thisLock = new ReaderWriterLockSlim(LockRecursionPolicy.NoRecursion);
private int _isDisposed = 0;
public void EnterReadLock()
{
this._thisLock.EnterReadLock();
}
public void EnterWriteLock()
{
this._thisLock.EnterWriteLock();
}
public void ExitReadLock()
{
this._thisLock.ExitReadLock();
}
public void ExitWriteLock()
{
this._thisLock.ExitWriteLock();
}
public void Dispose()
{
if (Interlocked.CompareExchange(ref this._isDisposed, 1, 0) == 0)
{
this._thisLock.Dispose();
}
}
#else
// ReaderWriterLockSlim is not yet implemented on SilverLight
// Satisfies our requirements until it is implemented
object _thisLock = new object();
public Lock()
{
}
public void EnterReadLock()
{
Monitor.Enter(this._thisLock);
}
public void EnterWriteLock()
{
Monitor.Enter(this._thisLock);
}
public void ExitReadLock()
{
Monitor.Exit(this._thisLock);
}
public void ExitWriteLock()
{
Monitor.Exit(this._thisLock);
}
public void Dispose()
{
}
#endif
}
}
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Weidong has been an information system professional since 1990. He has a Master's degree in Computer Science, and is currently a MCSD .NET