Changed debug of CTORs/DTOR

[u/mrichter/AliRoot.git] / PWGLF / FORWARD / analysis2 / AliMCTruthdNdetaTask.cxx

diff --git a/PWGLF/FORWARD/analysis2/AliMCTruthdNdetaTask.cxx b/PWGLF/FORWARD/analysis2/AliMCTruthdNdetaTask.cxx
index fe545e8c9e2e81b36214e3d58d0354d0d766f7bb..f45ffde0e6a7445475a8ad38a0df86ec1873c7ec 100644 (file)
--- a/PWGLF/FORWARD/analysis2/AliMCTruthdNdetaTask.cxx
+++ b/PWGLF/FORWARD/analysis2/AliMCTruthdNdetaTask.cxx
@@ -15,7 +15,8 @@
 
 //____________________________________________________________________
 AliMCTruthdNdetaTask::AliMCTruthdNdetaTask()
-  : AliBasedNdetaTask()
+  : AliBasedNdetaTask(),
+    fHasData(true)
 {
   //
   // Constructor 
@@ -24,7 +25,8 @@ AliMCTruthdNdetaTask::AliMCTruthdNdetaTask()
 
 //____________________________________________________________________
 AliMCTruthdNdetaTask::AliMCTruthdNdetaTask(const char* /* name */)
-  : AliBasedNdetaTask("MCTruth")
+  : AliBasedNdetaTask("MCTruth"), 
+    fHasData(true)
 {
   // 
   // Constructor
@@ -35,7 +37,8 @@ AliMCTruthdNdetaTask::AliMCTruthdNdetaTask(const char* /* name */)
 
 //____________________________________________________________________
 AliMCTruthdNdetaTask::AliMCTruthdNdetaTask(const AliMCTruthdNdetaTask& o)
-  : AliBasedNdetaTask(o)
+  : AliBasedNdetaTask(o), 
+    fHasData(o.fHasData)
 {
   // 
   // Copy constructor
@@ -75,10 +78,14 @@ AliMCTruthdNdetaTask::GetHistogram(const AliAODEvent* aod, Bool_t mc)
   // Return:
   //    Retrieved histogram or null
   //
+  if (!fHasData) return 0;
   if (mc) return 0;
   TObject* obj = aod->FindListObject("primary");
   // We should have a forward object at least 
-  if (!obj) return 0;
+  if (!obj) {
+    fHasData = false;
+    return 0;
+  }
   TH2D* ret = static_cast<TH2D*>(obj);
   // Need to fill underflow bin with 1's 
   for (Int_t i = 1; i <= ret->GetNbinsX(); i++)  
@@ -97,6 +104,10 @@ AliMCTruthdNdetaTask::Terminate(Option_t *option)
   // 
   // Parameters:
   //    option Not used 
+  if (!fHasData) {
+    AliInfo("The MC truth dN/deta task didn't get any data");
+    return;
+  }
   AliBasedNdetaTask::Terminate(option);
 
   THStack* truth      = new THStack("dndetaTruth", "dN/d#eta MC Truth");