root / trunk / Pithos.Core / JobQueue.cs @ b9f5b594
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// ----------------------------------------------------------------------- |
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// <copyright file="JobQueue.cs" company="GRNet"> |
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// Copyright 2011 GRNET S.A. All rights reserved. |
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// |
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// Redistribution and use in source and binary forms, with or |
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// without modification, are permitted provided that the following |
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// conditions are met: |
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// |
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// 1. Redistributions of source code must retain the above |
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// copyright notice, this list of conditions and the following |
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// disclaimer. |
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// |
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// 2. Redistributions in binary form must reproduce the above |
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// copyright notice, this list of conditions and the following |
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// disclaimer in the documentation and/or other materials |
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// provided with the distribution. |
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// |
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// THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS |
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// OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR |
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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// USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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// POSSIBILITY OF SUCH DAMAGE. |
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// |
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// The views and conclusions contained in the software and |
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// documentation are those of the authors and should not be |
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// interpreted as representing official policies, either expressed |
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// or implied, of GRNET S.A. |
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// </copyright> |
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// ----------------------------------------------------------------------- |
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|
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using System.Collections.Concurrent; |
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using System.Threading; |
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using System.Threading.Tasks; |
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|
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namespace Pithos.Core |
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{ |
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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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|
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/// <summary> |
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/// TODO: Update summary. |
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/// </summary> |
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public class JobQueue |
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{ |
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private readonly BlockingCollection<Action> _statusUpdateQueue = new BlockingCollection<Action>(); |
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private CancellationToken _cancellationToken; |
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|
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|
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public void Start(CancellationToken token) |
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{ |
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_cancellationToken = token; |
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Task.Factory.StartNew(ProcessUpdates, _cancellationToken); |
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} |
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|
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private void ProcessUpdates() |
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{ |
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foreach (var action in _statusUpdateQueue.GetConsumingEnumerable()) |
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{ |
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action(); |
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} |
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} |
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|
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public void Add(Action action) |
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{ |
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_statusUpdateQueue.Add(action); |
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} |
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|
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public void Stop() |
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{ |
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_statusUpdateQueue.CompleteAdding(); |
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} |
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|
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} |
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|
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public class JobAgent:Agent<Action> |
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{ |
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protected JobAgent(Action<Agent<Action>> action) |
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:base(action) |
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{ |
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|
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} |
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|
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public static JobAgent Create() |
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{ |
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return (JobAgent)Start(queue => |
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{ |
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Action loop = null; |
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loop = () => |
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{ |
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var job = queue.Receive(); |
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job.ContinueWith(t => |
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{ |
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t.IgnoreExceptions(); |
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var action = job.Result; |
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action(); |
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queue.DoAsync(loop); |
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}); |
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}; |
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loop(); |
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}); |
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} |
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|
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} |
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} |