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change clientCircuits_reverse to a synchronized hash table. This 

removes a lock on every SendPacketTo call, which was shown to have 
good performance benefits by the IBM China Research Lab.
0.6.0-stable
Sean Dague 2008-06-04 17:43:07 +00:00
parent 6e2f3bd3fb
commit 0cacdd370c
1 changed files with 45 additions and 35 deletions
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80
OpenSim/Region/ClientStack/LindenUDP/LLUDPServer.cs
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@ -26,6 +26,7 @@
*/
using System;
using System.Collections;
using System.Collections.Generic;
using System.Net;
using System.Net.Sockets;
@ -44,7 +45,10 @@ namespace OpenSim.Region.ClientStack.LindenUDP
private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
protected Dictionary<EndPoint, uint> clientCircuits = new Dictionary<EndPoint, uint>();
public Dictionary<uint, EndPoint> clientCircuits_reverse = new Dictionary<uint, EndPoint>();
//public Dictionary<uint, EndPoint> clientCircuits_reverse = new Dictionary<uint, EndPoint>();
public Hashtable clientCircuits_reverse = Hashtable.Synchronized(new Hashtable());
protected Dictionary<uint, EndPoint> proxyCircuits = new Dictionary<uint, EndPoint>();
private Socket m_socket;
protected IPEndPoint ServerIncoming;
@ -379,13 +383,13 @@ namespace OpenSim.Region.ClientStack.LindenUDP
else
m_log.Error("[UDPSERVER]: clientCircuits already contans entry for user " + useCircuit.CircuitCode.Code.ToString() + ". NOT adding.");
}
lock (clientCircuits_reverse)
{
if (!clientCircuits_reverse.ContainsKey(useCircuit.CircuitCode.Code))
clientCircuits_reverse.Add(useCircuit.CircuitCode.Code, epSender);
else
m_log.Error("[UDPSERVER]: clientCurcuits_reverse already contains entry for user " + useCircuit.CircuitCode.Code.ToString() + ". NOT adding.");
}
// This doesn't need locking as it's synchronized data
if (!clientCircuits_reverse.ContainsKey(useCircuit.CircuitCode.Code))
clientCircuits_reverse.Add(useCircuit.CircuitCode.Code, epSender);
else
m_log.Error("[UDPSERVER]: clientCurcuits_reverse already contains entry for user " + useCircuit.CircuitCode.Code.ToString() + ". NOT adding.");
lock (proxyCircuits)
{
@ -437,22 +441,27 @@ namespace OpenSim.Region.ClientStack.LindenUDP
{
// find the endpoint for this circuit
EndPoint sendto = null;
lock (clientCircuits_reverse)
try {
sendto = (EndPoint)clientCircuits_reverse[circuitcode];
} catch {
// Exceptions here mean there is no circuit
m_log.Warn("Circuit not found, not sending packet");
return;
}
if (sendto != null)
{
if (clientCircuits_reverse.TryGetValue(circuitcode, out sendto))
//we found the endpoint so send the packet to it
if (proxyPortOffset != 0)
{
//we found the endpoint so send the packet to it
if (proxyPortOffset != 0)
{
//MainLog.Instance.Verbose("UDPSERVER", "SendPacketTo proxy " + proxyCircuits[circuitcode].ToString() + ": client " + sendto.ToString());
PacketPool.EncodeProxyMessage(buffer, ref size, sendto);
m_socket.SendTo(buffer, size, flags, proxyCircuits[circuitcode]);
}
else
{
//MainLog.Instance.Verbose("UDPSERVER", "SendPacketTo : client " + sendto.ToString());
m_socket.SendTo(buffer, size, flags, sendto);
}
//MainLog.Instance.Verbose("UDPSERVER", "SendPacketTo proxy " + proxyCircuits[circuitcode].ToString() + ": client " + sendto.ToString());
PacketPool.EncodeProxyMessage(buffer, ref size, sendto);
m_socket.SendTo(buffer, size, flags, proxyCircuits[circuitcode]);
}
else
{
//MainLog.Instance.Verbose("UDPSERVER", "SendPacketTo : client " + sendto.ToString());
m_socket.SendTo(buffer, size, flags, sendto);
}
}
}
@ -460,13 +469,15 @@ namespace OpenSim.Region.ClientStack.LindenUDP
public virtual void RemoveClientCircuit(uint circuitcode)
{
EndPoint sendto = null;
lock (clientCircuits_reverse)
{
if (clientCircuits_reverse.TryGetValue(circuitcode, out sendto))
{
clientCircuits.Remove(sendto);
if (clientCircuits_reverse.Contains(circuitcode)) {
sendto = (EndPoint)clientCircuits_reverse[circuitcode];
clientCircuits_reverse.Remove(circuitcode);
clientCircuits_reverse.Remove(circuitcode);
lock(clientCircuits) {
clientCircuits.Remove(sendto);
}
lock(proxyCircuits) {
proxyCircuits.Remove(circuitcode);
}
}
@ -488,13 +499,12 @@ namespace OpenSim.Region.ClientStack.LindenUDP
else
m_log.Error("[UDPSERVER]: clientCircuits already contans entry for user " + useCircuit.CircuitCode.Code.ToString() + ". NOT adding.");
}
lock (clientCircuits_reverse)
{
if (!clientCircuits_reverse.ContainsKey(useCircuit.CircuitCode.Code))
clientCircuits_reverse.Add(useCircuit.CircuitCode.Code, userEP);
else
m_log.Error("[UDPSERVER]: clientCurcuits_reverse already contains entry for user " + useCircuit.CircuitCode.Code.ToString() + ". NOT adding.");
}
// This data structure is synchronized, so we don't need the lock
if (!clientCircuits_reverse.ContainsKey(useCircuit.CircuitCode.Code))
clientCircuits_reverse.Add(useCircuit.CircuitCode.Code, userEP);
else
m_log.Error("[UDPSERVER]: clientCurcuits_reverse already contains entry for user " + useCircuit.CircuitCode.Code.ToString() + ". NOT adding.");
lock (proxyCircuits)
{