Mantis#2183. Thank you kindly, Ewe Loon for a patch that addresses:

after using llTakeControls my sim receives about 200 messages per second, 
l of which get queued , this could be because there is no lag as the viewer 
and sim are on the same computer. The patch I have included checks to see if 
the "Changed" param is 0 then searches the EventQueue for Control messages 
being sent to the same localid, if it finds a message already in the Queue 
and Changed==0 then the new message is only notifing you the key is being held, 
since there is already a message the new one isnt needed so it isnt added 
to the queue.

2 files changed, 26 insertions, 0 deletions

diff --git a/OpenSim/Region/ScriptEngine/Common/ScriptEngineBase/EventManager.cs b/OpenSim/Region/ScriptEngine/Common/ScriptEngineBase/EventManager.cs
index 89d7045..5a9385f 100644
--- a/OpenSim/Region/ScriptEngine/Common/ScriptEngineBase/EventManager.cs
+++ b/OpenSim/Region/ScriptEngine/Common/ScriptEngineBase/EventManager.cs
@@ -357,6 +357,7 @@ namespace OpenSim.Region.ScriptEngine.Common.ScriptEngineBase
 
         public void control(uint localID, UUID itemID, UUID agentID, uint held, uint change)
         {
+            if ((change == 0) && (myScriptEngine.m_EventQueueManager.CheckEeventQueueForEvent(localID,"control"))) return;
             myScriptEngine.m_EventQueueManager.AddToScriptQueue(localID, itemID, "control", EventQueueManager.llDetectNull, new object[] { new LSL_Types.LSLString(agentID.ToString()), new LSL_Types.LSLInteger(held), new LSL_Types.LSLInteger(change)});
         }
 
diff --git a/OpenSim/Region/ScriptEngine/Common/ScriptEngineBase/EventQueueManager.cs b/OpenSim/Region/ScriptEngine/Common/ScriptEngineBase/EventQueueManager.cs
index 1a08795..af7fca3 100644
--- a/OpenSim/Region/ScriptEngine/Common/ScriptEngineBase/EventQueueManager.cs
+++ b/OpenSim/Region/ScriptEngine/Common/ScriptEngineBase/EventQueueManager.cs
@@ -288,6 +288,31 @@ namespace OpenSim.Region.ScriptEngine.Common.ScriptEngineBase
             }
         }
         #endregion
+        
+        #region " Check execution queue for a specified Event"
+        /// <summary>
+        /// checks to see if a specified event type is already in the queue
+        /// </summary>
+        /// <param name="localID">Region object ID</param>
+        /// <param name="FunctionName">Name of the function, will be state + "_event_" + FunctionName</param>
+        /// <returns>true if event is found , false if not found</returns>
+        /// 
+        public bool CheckEeventQueueForEvent(uint localID, string FunctionName)
+        {
+            if (eventQueue.Count > 0)
+            {
+                lock (eventQueue)
+                {
+                    foreach (EventQueueManager.QueueItemStruct QIS in eventQueue)
+                    {
+                        if ((QIS.functionName == FunctionName) && (QIS.localID == localID))
+                            return true;
+                    }
+                }
+            }
+            return false;
+        }
+        #endregion
 
         #region " Add events to execution queue "
         /// <summary>