--- a/Implab/Diagnostics/Extensions.cs	Thu Oct 23 01:13:57 2014 +0400
+++ b/Implab/Diagnostics/Extensions.cs	Thu Oct 23 17:50:09 2014 +0400
@@ -10,6 +10,17 @@
                 TraceContext.Instance.Leave();
             });
         }
+
+        public static IPromise EndLogicalOperation(this IPromise promise) {
+            Safe.ArgumentNotNull(promise, "promise");
+            var op = TraceContext.Instance.DetachLogicalOperation();
+
+            return promise.Anyway(() => {
+                TraceContext.Instance.EnterLogicalOperation(op,true);
+                TraceLog.EndLogicalOperation();
+                TraceContext.Instance.Leave();
+            });
+        }
     }
 }