tmf: Do not broadcast signal if request is cancelled

The state system builder should not send the StateSystemBuildCompleted
signal if the request was cancelled, since the history was never
really built.

refs bug #384637

Change-Id: Ie6f872b5149e4c022ad65c99e68202f8ef74f808

1 files changed, 7 insertions, 4 deletions

diff --git a/lttng/org.eclipse.linuxtools.tmf.core/src/org/eclipse/linuxtools/internal/tmf/core/statesystem/HistoryBuilder.java b/lttng/org.eclipse.linuxtools.tmf.core/src/org/eclipse/linuxtools/internal/tmf/core/statesystem/HistoryBuilder.java
index b819e3cb48..da2e4e2d48 100644
--- a/lttng/org.eclipse.linuxtools.tmf.core/src/org/eclipse/linuxtools/internal/tmf/core/statesystem/HistoryBuilder.java
+++ b/lttng/org.eclipse.linuxtools.tmf.core/src/org/eclipse/linuxtools/internal/tmf/core/statesystem/HistoryBuilder.java
@@ -183,15 +183,18 @@ public class HistoryBuilder extends TmfComponent {
     }
 
     void close(boolean deleteFiles) {
+        TmfSignal doneSig;
+
         sci.dispose();
         if (deleteFiles) {
             hb.removeFiles();
+            /* We won't broadcast the signal if the request was cancelled */
+        } else {
+            /* Broadcast the signal saying the history is done building */
+            doneSig = new TmfStateSystemBuildCompleted(this, sci.getTrace());
+            TmfSignalManager.dispatchSignal(doneSig);
         }
 
-        /* Broadcast the signal saying the history is done building */
-        TmfSignal doneSig = new TmfStateSystemBuildCompleted(this, sci.getTrace());
-        TmfSignalManager.dispatchSignal(doneSig);
-
         TmfSignalManager.deregister(this);
     }
 }