/source/library/Interlace/Threads/ThreadedSlot.cs

#region Using Directives and Copyright Notice



// Copyright (c) 2007-2010, Computer Consultancy Pty Ltd

// All rights reserved.

// 

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// modification, are permitted provided that the following conditions are met:

//     * Redistributions of source code must retain the above copyright

//       notice, this list of conditions and the following disclaimer.

//     * Redistributions in binary form must reproduce the above copyright

//       notice, this list of conditions and the following disclaimer in the

//       documentation and/or other materials provided with the distribution.

//     * Neither the name of the Computer Consultancy Pty Ltd nor the

//       names of its contributors may be used to endorse or promote products

//       derived from this software without specific prior written permission.

// 

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 

// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 

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using System;

using System.Collections.Generic;

using System.Text;

using System.Threading;



#endregion



namespace Interlace.Threads

{

    public class ThreadedSlot

    {

        private object _slot;



        private AutoResetEvent _elementPresent = new AutoResetEvent(false);

        private AutoResetEvent _spacePresent = new AutoResetEvent(true);



        public void PutInToSlot(object obj)

        {

            _spacePresent.WaitOne();

            _slot = obj;

            _elementPresent.Set();

        }



        public object GetFromSlot()

        {

            _elementPresent.WaitOne();

            object obj = _slot;



            // Avoid keeping a reference that may prevent garbage collection:

            _slot = null;



            _spacePresent.Set();



            return obj;

        }

    }

}