1 files changed, 97 insertions, 0 deletions

diff --git a/OpenSim/Region/ScriptEngine/YEngine/XMRScriptUThread.cs b/OpenSim/Region/ScriptEngine/YEngine/XMRScriptUThread.cs
new file mode 100644
index 0000000..5806d36
--- /dev/null
+++ b/OpenSim/Region/ScriptEngine/YEngine/XMRScriptUThread.cs
@@ -0,0 +1,97 @@
+/*
+ * 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.Generic;
+using System.Reflection;
+using System.Threading;
+
+namespace OpenSim.Region.ScriptEngine.Yengine
+{
+
+    public partial class XMRInstance
+    {
+        /**
+        * @brief Start script event handler from the beginning.
+        *        Return when either the script event handler completes
+        *        or the script calls Hiber().
+        * @returns null: script did not throw any exception so far
+        *          else: script threw an exception
+        */
+        public Exception StartEx()
+        {
+            // Start script event handler from very beginning.
+            callMode = XMRInstance.CallMode_NORMAL;
+            try
+            {
+                CallSEH();                 // run script event handler
+            }
+            catch(StackHibernateException)
+            {
+                if(callMode != XMRInstance.CallMode_SAVE)
+                    throw new Exception("callMode=" + callMode);
+            }
+            catch(Exception e)
+            {
+                return e;
+            }
+
+            return null;
+        }
+
+        /**
+         * @brief We now want to run some more script code from where it last hibernated
+         *        until it either finishes the script event handler or until the script
+         *        calls Hiber() again.
+         */
+        public Exception ResumeEx()
+        {
+            // Resume script from captured stack.
+            callMode = XMRInstance.CallMode_RESTORE;
+            suspendOnCheckRunTemp = true;
+            try
+            {
+                CallSEH();                 // run script event handler
+            }
+            catch(StackHibernateException)
+            {
+                if(callMode != XMRInstance.CallMode_SAVE)
+                    throw new Exception("callMode=" + callMode);
+            }
+            catch(Exception e)
+            {
+                return e;
+            }
+
+            return null;
+        }
+
+        public class StackHibernateException: Exception, IXMRUncatchable
+        {
+        }
+    }
+}