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// 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.
//
/*============================================================
**
**
**
** Purpose: Defines the lock that implements
** single-writer/multiple-reader semantics
**
**
===========================================================*/
namespace System.Threading {
using System;
[System.Runtime.InteropServices.ComVisible(true)]
public struct LockCookie
{
private int _dwFlags;
private int _dwWriterSeqNum;
private int _wReaderAndWriterLevel;
private int _dwThreadID;
public override int GetHashCode()
{
return _dwFlags + _dwWriterSeqNum + _wReaderAndWriterLevel + _dwThreadID;
}
public override bool Equals(Object obj)
{
if (obj is LockCookie)
return Equals((LockCookie)obj);
else
return false;
}
public bool Equals(LockCookie obj)
{
return obj._dwFlags == _dwFlags && obj._dwWriterSeqNum == _dwWriterSeqNum &&
obj._wReaderAndWriterLevel == _wReaderAndWriterLevel && obj._dwThreadID == _dwThreadID;
}
public static bool operator ==(LockCookie a, LockCookie b)
{
return a.Equals(b);
}
public static bool operator !=(LockCookie a, LockCookie b)
{
return !(a == b);
}
}
}
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