From 97533e7c3d91b7c579616962106faa0ec3ff9258 Mon Sep 17 00:00:00 2001
From: Stephan <stephane@umbraco.dk>
Date: Wed, 8 Jul 2015 21:28:59 +0200
Subject: [PATCH] UmbracoApplication - log unhandled exceptions

---
 src/Umbraco.Core/UmbracoApplicationBase.cs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/Umbraco.Core/UmbracoApplicationBase.cs b/src/Umbraco.Core/UmbracoApplicationBase.cs
index b98e3935ee..33c3d58689 100644
--- a/src/Umbraco.Core/UmbracoApplicationBase.cs
+++ b/src/Umbraco.Core/UmbracoApplicationBase.cs
@@ -32,6 +32,19 @@ namespace Umbraco.Core
         /// </summary>
         internal void StartApplication(object sender, EventArgs e)
         {
+            //take care of unhandled exceptions - there is nothing we can do to 
+            // prevent the entire w3wp process to go down but at least we can try
+            // and log the exception
+            AppDomain.CurrentDomain.UnhandledException += (_, args) =>
+            {
+                var exception = (Exception) args.ExceptionObject;
+                var isTerminating = args.IsTerminating; // always true?
+
+                var msg = "Unhandled exception in AppDomain";
+                if (isTerminating) msg += " (terminating)";
+                Logger.Error(typeof(UmbracoApplicationBase), msg, exception);
+            };
+
             //boot up the application
             GetBootManager()
                 .Initialize()
@@ -150,6 +163,7 @@ namespace Umbraco.Core
         {
             get
             {
+                // LoggerResolver can resolve before resolution is frozen
                 if (LoggerResolver.HasCurrent && LoggerResolver.Current.HasValue)
                 {
                     return LoggerResolver.Current.Logger;