fix: trace server does not notify the client when the state system is empty and the analysis is completed, resulting in infinite polling

Signed-off-by: Anh Hoang Nguyen <[email protected]>

Author: aaanh

analysis/org.eclipse.tracecompass.analysis.profiling.core/src/org/eclipse/tracecompass/internal/analysis/profiling/core/instrumented/FlameChartDataProvider.java

@@ -345,6 +345,10 @@ public TmfModelResponse<TmfTreeModel<FlameChartEntryModel>> fetchTree(Map<String
             boolean complete = fcProvider.isComplete();
             CallStackSeries callstack = fcProvider.getCallStackSeries();
             if (callstack == null) {
+                // Explicitly tell the client that the analysis is completed to prevent further polling
+                if (complete) {
+                    return new TmfModelResponse<>(new TmfTreeModel<>(Collections.emptyList(), Collections.emptyList()), ITmfResponse.Status.COMPLETED, CommonStatusMessage.COMPLETED);
+                }
                 return new TmfModelResponse<>(new TmfTreeModel<>(Collections.emptyList(), Collections.emptyList()), ITmfResponse.Status.RUNNING, CommonStatusMessage.RUNNING);
             }
             long start = getTrace().getStartTime().getValue();