From 2a0e157985d790e6cbd83d61690da2709dfab9dd Mon Sep 17 00:00:00 2001
From: Tedd Hansen
Date: Wed, 8 Aug 2007 14:05:13 +0000
Subject: Added ScriptEngine.DotNetEngine

---
 .../ScriptEngine/DotNetEngine/EventQueueManager.cs | 136 +++++++++++++++++++++
 1 file changed, 136 insertions(+)
 create mode 100644 OpenSim/Region/ScriptEngine/DotNetEngine/EventQueueManager.cs

(limited to 'OpenSim/Region/ScriptEngine/DotNetEngine/EventQueueManager.cs')

diff --git a/OpenSim/Region/ScriptEngine/DotNetEngine/EventQueueManager.cs b/OpenSim/Region/ScriptEngine/DotNetEngine/EventQueueManager.cs
new file mode 100644
index 0000000..59f669b
--- /dev/null
+++ b/OpenSim/Region/ScriptEngine/DotNetEngine/EventQueueManager.cs
@@ -0,0 +1,136 @@
+/*
+* Copyright (c) Contributors, http://www.openmetaverse.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 OpenSim 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.
+* 
+*/
+/* Original code: Tedd Hansen */
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Threading;
+using System.Reflection;
+
+namespace OpenSim.Region.ScriptEngine.DotNetEngine
+{
+    class EventQueueManager
+    {
+        private Thread EventQueueThread;
+        private int NothingToDoSleepms = 200;
+        private Queue<QueueItemStruct> EventQueue = new Queue<QueueItemStruct>();
+        private struct QueueItemStruct
+        {
+            public string ObjectID;
+            public string ScriptID;
+            public string FunctionName;
+            public object[] param;
+        }
+
+        private ScriptEngine myScriptEngine;
+        public EventQueueManager(ScriptEngine _ScriptEngine)
+        {
+            myScriptEngine = _ScriptEngine;
+            Common.SendToDebug("EventQueueManager Start");
+            // Start worker thread
+            EventQueueThread = new Thread(EventQueueThreadLoop);
+            EventQueueThread.IsBackground = true;
+            EventQueueThread.Name = "EventQueueManagerThread";
+            EventQueueThread.Start();
+        }
+        ~EventQueueManager()
+        {
+            // Kill worker thread
+            if (EventQueueThread != null && EventQueueThread.IsAlive == true)
+            {
+                try
+                {
+                    EventQueueThread.Abort();
+                    EventQueueThread.Join();
+                }
+                catch (Exception e)
+                {
+                    Common.SendToDebug("EventQueueManager Exception killing worker thread: " + e.ToString());
+                }
+            }
+            // Todo: Clean up our queues
+
+        }
+
+        private void EventQueueThreadLoop()
+        {
+            Common.SendToDebug("EventQueueManager Worker thread spawned");
+            try
+            {
+                while (true)
+                {
+                    if (EventQueue.Count == 0)
+                    {
+                        // Nothing to do? Sleep a bit waiting for something to do
+                        Thread.Sleep(NothingToDoSleepms);
+                    }
+                    else
+                    {
+                        // Something in queue, process
+                        QueueItemStruct QIS = EventQueue.Dequeue();
+                        Common.SendToDebug("Processing event for ObjectID: " + QIS.ObjectID + ", ScriptID: " + QIS.ScriptID + ", FunctionName: " + QIS.FunctionName);
+                        // TODO: Execute function
+                        myScriptEngine.myScriptManager.ExecuteFunction(QIS.ObjectID, QIS.ScriptID, QIS.FunctionName, QIS.param);
+                    }
+                }
+            }
+            catch (ThreadAbortException tae)
+            {
+                Common.SendToDebug("EventQueueManager Worker thread killed: " + tae.Message);
+            }
+        }
+
+        public void AddToObjectQueue(string ObjectID, string FunctionName, object[] param)
+        {
+            // Determine all scripts in Object and add to their queue
+            Common.SendToDebug("EventQueueManager Adding ObjectID: " + ObjectID + ", FunctionName: " + FunctionName);
+
+            foreach (string ScriptID in myScriptEngine.myScriptManager.GetScriptKeys(ObjectID))
+            {
+                // Add to each script in that object
+                // TODO: Some scripts may not subscribe to this event. Should we NOT add it? Does it matter?
+
+                // Create a structure and add data
+                QueueItemStruct QIS = new QueueItemStruct();
+                QIS.ObjectID = ObjectID;
+                QIS.ScriptID = ScriptID;
+                QIS.FunctionName = FunctionName;
+                QIS.param = param;
+
+                // Add it to queue
+                EventQueue.Enqueue(QIS);
+                
+            }
+        }
+        //public void AddToScriptQueue(string ObjectID, string FunctionName, object[] param)
+        //{
+        //    // Add to script queue
+        //}
+
+    }
+}
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