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Viewing changes to contrib/Sharpen/Sharpen/ReferenceQueue.cs

  • Committer: Bazaar Package Importer
  • Author(s): Jo Shields
  • Date: 2011-06-27 17:03:13 UTC
  • mto: (1.8.1 upstream)
  • mto: This revision was merged to the branch mainline in revision 54.
  • Revision ID: james.westby@ubuntu.com-20110627170313-6cvz3s19x6e9hqe9
Import upstream version 2.5.92+dfsg

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contrib/Sharpen/Sharpen/ReferenceQueue.cs
 
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namespace Sharpen
 
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{
 
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        using System;
 
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        using System.Collections.Generic;
 
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        internal class ReferenceQueue<T>
 
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        {
 
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                private Queue<Reference<T>> queue;
 
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                public ReferenceQueue ()
 
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                {
 
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                        this.queue = new Queue<Reference<T>> ();
 
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                }
 
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                internal bool Add (Reference<T> t)
 
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                {
 
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                        Queue<Reference<T>> queue = this.queue;
 
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                        lock (queue) {
 
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                                if (this.queue.Contains (t)) {
 
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                                        return false;
 
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                                }
 
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                                this.queue.Enqueue (t);
 
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                                return true;
 
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                        }
 
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                }
 
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                public Reference<T> Poll ()
 
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                {
 
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                        Queue<Reference<T>> queue = this.queue;
 
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                        lock (queue) {
 
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                                if (this.queue.Count > 0) {
 
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                                        return this.queue.Dequeue ();
 
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                                }
 
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                                return null;
 
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                        }
 
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                }
 
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        }
 
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}