--- a/Implab/Diagnostics/TraceContext.cs	Wed Oct 22 18:37:56 2014 +0400
+++ b/Implab/Diagnostics/TraceContext.cs	Thu Oct 23 01:13:57 2014 +0400
@@ -41,35 +41,36 @@
         }
 
         public void EnterLogicalOperation(LogicalOperation operation, bool takeOwnership) {
-            // TODO Emit event
+            LogChannel<TraceEvent>.Default.LogEvent(new TraceEvent(TraceEventType.Attach, String.Format("{0} -> [{1}]", operation.Name, m_threadId)));
             m_stack.Push(m_current);
             m_current = new OperationContext(operation, takeOwnership);
         }
 
         public void StartLogicalOperation(string name) {
             m_current.BeginLogicalOperation(name);
+            LogChannel<TraceEvent>.Default.LogEvent(new TraceEvent(TraceEventType.OperationStarted, String.Format("+{0}",CurrentOperation.Name)));
         }
 
         public void StartLogicalOperation() {
-            // TODO Emit Event
-            m_current.BeginLogicalOperation(String.Empty);
+            StartLogicalOperation(String.Empty);
         }
 
         public void EndLogicalOperation() {
-            // TODO Emit event
+            LogChannel<TraceEvent>.Default.LogEvent(new TraceEvent(TraceEventType.OperationCompleted, String.Format("-{0} : {1}ms",CurrentOperation.Name, CurrentOperation.Duration)));
             m_current.EndLogicalOperation();
         }
 
         public LogicalOperation DetachLogicalOperation() {
-            // TODO Emit event
-            return m_current.DetachLogicalOperation();
+            var op = m_current.DetachLogicalOperation();
+            LogChannel<TraceEvent>.Default.LogEvent(new TraceEvent(TraceEventType.Detach, String.Format("[{0}] -> {1}", m_threadId, op.Name)));
+            return op;
         }
 
         public void Leave() {
-            // TODO Emit event
-            if (m_stack.Count > 0)
+            if (m_stack.Count > 0) {
+                m_current.Leave();
                 m_current = m_stack.Pop();
-            else {
+            } else {
                 TraceLog.TraceWarning("Attemtp to leave the last operation context");
                 m_current = OperationContext.EMPTY;
             }