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/*
* 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;
using System.Collections;
using System.Threading;
using HttpServer;
namespace OpenSim.Framework.Servers.HttpServer
{
public class PollServiceRequestManager
{
private readonly BaseHttpServer m_server;
private static Queue m_requests = Queue.Synchronized(new Queue());
private uint m_WorkerThreadCount = 0;
private Thread[] m_workerThreads;
private PollServiceWorkerThread[] m_PollServiceWorkerThreads;
private Thread m_watcherThread;
private bool m_running = true;
public PollServiceRequestManager(BaseHttpServer pSrv, uint pWorkerThreadCount, int pTimeout)
{
m_server = pSrv;
m_WorkerThreadCount = pWorkerThreadCount;
m_workerThreads = new Thread[m_WorkerThreadCount];
m_PollServiceWorkerThreads = new PollServiceWorkerThread[m_WorkerThreadCount];
m_watcherThread = new Thread(ThreadStart);
//startup worker threads
for (uint i=0;i<m_WorkerThreadCount;i++)
{
m_PollServiceWorkerThreads[i] = new PollServiceWorkerThread(m_server, pTimeout);
m_PollServiceWorkerThreads[i].ReQueue += ReQueueEvent;
m_workerThreads[i] = new Thread( m_PollServiceWorkerThreads[i].ThreadStart);
m_workerThreads[i].Name = String.Format("PollServiceWorkerThread{0}",i);
//Can't add to thread Tracker here Referencing OpenSim.Framework creates circular reference
m_workerThreads[i].Start();
}
//start watcher threads
m_watcherThread.Name = "PollServiceWatcherThread";
m_watcherThread.Start();
}
internal void ReQueueEvent(PollServiceHttpRequest req)
{
// Do accounting stuff here
Enqueue(req);
}
public void Enqueue(PollServiceHttpRequest req)
{
lock (m_requests)
m_requests.Enqueue(req);
}
public void ThreadStart(object o)
{
while (m_running)
{
ProcessQueuedRequests();
Thread.Sleep(1000);
}
}
private void ProcessQueuedRequests()
{
lock (m_requests)
{
if (m_requests.Count == 0)
return;
int reqperthread = (int) (m_requests.Count/m_WorkerThreadCount) + 1;
// For Each WorkerThread
for (int tc = 0; tc < m_WorkerThreadCount && m_requests.Count > 0; tc++)
{
//Loop over number of requests each thread handles.
for (int i=0;i<reqperthread && m_requests.Count > 0;i++)
{
try
{
m_PollServiceWorkerThreads[tc].Enqueue((PollServiceHttpRequest)m_requests.Dequeue());
}
catch (InvalidOperationException)
{
// The queue is empty, we did our calculations wrong!
return;
}
}
}
}
}
~PollServiceRequestManager()
{
foreach (object o in m_requests)
{
PollServiceHttpRequest req = (PollServiceHttpRequest) o;
m_server.DoHTTPGruntWork(req.PollServiceArgs.NoEvents(), new OSHttpResponse(new HttpResponse(req.HttpContext, req.Request), req.HttpContext));
}
m_requests.Clear();
foreach (Thread t in m_workerThreads)
{
t.Abort();
}
m_running = false;
}
}
}
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