TMF: Check if state system is available before scheduling analysis

Adding tracing capabilities to analyses shows that an analysis is scheduled
a LOT of times just to get the state system. We should check the state system
is not null before scheduling.

Change-Id: Ic5b159566b0b84211e1b9506f4d0ecfa08df0dc6
Signed-off-by: Geneviève Bastien <gbastien+lttng@versatic.net>
Reviewed-on: https://git.eclipse.org/r/38271
Reviewed-by: Hudson CI
Reviewed-by: Bernd Hufmann <bernd.hufmann@ericsson.com>
Tested-by: Bernd Hufmann <bernd.hufmann@ericsson.com>

diff --git a/org.eclipse.tracecompass.tmf.core/src/org/eclipse/tracecompass/tmf/core/statesystem/TmfStateSystemAnalysisModule.java b/org.eclipse.tracecompass.tmf.core/src/org/eclipse/tracecompass/tmf/core/statesystem/TmfStateSystemAnalysisModule.java
index c9981a64ba72581866399de934fc5ec14bec21cb..d89a90af29fec18d4c9d6681120c206dde793dd0 100644 (file)
--- a/org.eclipse.tracecompass.tmf.core/src/org/eclipse/tracecompass/tmf/core/statesystem/TmfStateSystemAnalysisModule.java
+++ b/org.eclipse.tracecompass.tmf.core/src/org/eclipse/tracecompass/tmf/core/statesystem/TmfStateSystemAnalysisModule.java
@@ -108,6 +108,10 @@ public abstract class TmfStateSystemAnalysisModule extends TmfAbstractAnalysisMo
         TmfStateSystemAnalysisModule module =
                 TmfTraceUtils.getAnalysisModuleOfClass(trace, TmfStateSystemAnalysisModule.class, moduleId);
         if (module != null) {
+            ITmfStateSystem ss = module.getStateSystem();
+            if (ss != null) {
+                return ss;
+            }
             IStatus status = module.schedule();
             if (status.isOK()) {
                 module.waitForInitialization();