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* Adds the ability to have a thread efficient long poll service (such as the eventqueue)

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* If this doesn't melt the Http Server, this will significantly reduce the number of threads in use on regions with many users.
* Adds AddPollServiceHTTPHandler, and RemovePollServiceHTTPHandler to BaseHttpServer
* Generic enough to be used for many long poll services, not only the EventQueue.
This commit is contained in:
Teravus Ovares
2009-07-29 02:15:45 +00:00
parent f94985a939
commit 032aeb8b5d
11 changed files with 527 additions and 18 deletions
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100
OpenSim/Framework/Servers/HttpServer/PollServiceWorkerThread.cs Normal file
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using System;
using System.Collections;
using System.Collections.Generic;
/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* 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 OpenSimulator Project 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 DEVELOPERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
using System.IO;
using System.Text;
using HttpServer;
using OpenMetaverse;
namespace OpenSim.Framework.Servers.HttpServer
{
public delegate void ReQueuePollServiceItem(PollServiceHttpRequest req);
public class PollServiceWorkerThread
{
public event ReQueuePollServiceItem ReQueue;
private readonly BaseHttpServer m_server;
private BlockingQueue<PollServiceHttpRequest> m_request;
private bool m_running = true;
private int m_timeout = 25000;
public PollServiceWorkerThread(BaseHttpServer pSrv, int pTimeout)
{
m_request = new BlockingQueue<PollServiceHttpRequest>();
m_server = pSrv;
m_timeout = pTimeout;
}
public void ThreadStart(object o)
{
Run();
}
public void Run()
{
while (m_running)
{
PollServiceHttpRequest req = m_request.Dequeue();
if (req.PollServiceArgs.HasEvents(req.PollServiceArgs.Id))
{
StreamReader str = new StreamReader(req.Request.Body);
Hashtable responsedata = req.PollServiceArgs.GetEvents(req.PollServiceArgs.Id, str.ReadToEnd());
m_server.DoHTTPGruntWork(responsedata,
new OSHttpResponse(new HttpResponse(req.HttpContext, req.Request)));
}
else
{
if ((Environment.TickCount - req.RequestTime) > m_timeout)
{
m_server.DoHTTPGruntWork(req.PollServiceArgs.NoEvents(),
new OSHttpResponse(new HttpResponse(req.HttpContext, req.Request)));
}
else
{
ReQueuePollServiceItem reQueueItem = ReQueue;
if (reQueueItem != null)
reQueueItem(req);
}
}
}
}
internal void Enqueue(PollServiceHttpRequest pPollServiceHttpRequest)
{
m_request.Enqueue(pPollServiceHttpRequest);
}
}
}