Merge pull request #133 from NLog/improve-performance

Improve performance with many threads
NLog · May 1, 2017 · 56ad4ef · 56ad4ef
2 parents 0fca141 + f967e29
commit 56ad4ef
Showing 1 changed file with 12 additions and 1 deletion.
diff --git a/NLog.Web.AspNetCore/LayoutRenderers/AspNetLayoutRendererBase.cs b/NLog.Web.AspNetCore/LayoutRenderers/AspNetLayoutRendererBase.cs
@@ -38,10 +38,21 @@ protected AspNetLayoutRendererBase()
         /// <returns>HttpContextAccessor or <c>null</c></returns>
         public IHttpContextAccessor HttpContextAccessor
         {
-            get { return _httpContextAccessor ?? ServiceLocator.ServiceProvider?.GetService<IHttpContextAccessor>(); }
+            get { return _httpContextAccessor ?? (_httpContextAccessor = ServiceLocator.ServiceProvider?.GetService<IHttpContextAccessor>()); }
             set { _httpContextAccessor = value; }
         }
 
+        /// <summary>
+        ///  Initialize
+        /// </summary>
+        protected override void InitializeLayoutRenderer()
+        {
+            if (HttpContextAccessor == null)
+            {
+                Common.InternalLogger.Warn("Missing IHttpContextAccessor. Has it been registered before loading NLog Configuration? Consider reloading NLog Configuration after having registered the IHttpContextAccessor.");
+            }
+        }
+
 #else
         /// <summary>
         /// Provides access to the current request HttpContext.