--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Implab/Diagnostics/Log.cs	Mon Apr 14 18:25:26 2014 +0400
@@ -0,0 +1,50 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Implab.Diagnostics {
+    public static class Log {
+        [Conditional("TRACE")]
+        public static void Transfer(LogContext from) {
+            LogContext.Transfer(from);
+        }
+
+        [Conditional("TRACE")]
+        public static void StartLogicalOperation() {
+            LogContext.Current.StartLogicalOperation();
+        }
+
+        [Conditional("TRACE")]
+        public static void StartLogicalOperation(string name) {
+            LogContext.Current.StartLogicalOperation(name);
+        }
+
+        [Conditional("TRACE")]
+        public static void EndLogicalOperation() {
+            LogContext.Current.EndLogicalOperation();
+        }
+
+        [Conditional("TRACE")]
+        public static void TraceInformation(string format, params object[] arguments) {
+            LogContext.Current.TraceEvent(TraceEventType.Information, format, arguments);
+        }
+
+        [Conditional("TRACE")]
+        public static void TraceWarning(string format, params object[] arguments) {
+            LogContext.Current.TraceEvent(TraceEventType.Warning, format, arguments);
+        }
+
+        [Conditional("TRACE")]
+        public static void TraceError(string format, params object[] arguments) {
+            LogContext.Current.TraceEvent(TraceEventType.Error, format, arguments);
+        }
+
+        [Conditional("TRACE")]
+        public static void TraceError(Exception err) {
+            TraceError("{0}", err);
+        }
+    }
+}