1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
17 // Author: Andrei Gheata, 31/05/2006
19 //==============================================================================
20 // AliAnalysisSelector - A transparent selector to be created by
21 // AliAnalysisManager to handle analysis.
22 //==============================================================================
24 #include <Riostream.h>
25 #include <TProcessID.h>
27 #include "AliAnalysisManager.h"
28 #include "AliAnalysisTask.h"
29 #include "AliAnalysisDataContainer.h"
30 #include "AliAnalysisSelector.h"
32 ClassImp(AliAnalysisSelector)
34 //______________________________________________________________________________
35 AliAnalysisSelector::AliAnalysisSelector()
41 fAnalysis = AliAnalysisManager::GetAnalysisManager();
42 if (fAnalysis) fAnalysis->SetSelector(this);
45 //______________________________________________________________________________
46 AliAnalysisSelector::AliAnalysisSelector(AliAnalysisManager *mgr)
51 // Constructor. Called by AliAnalysisManager which registers itself on the
52 // selector running on the master.
53 mgr->SetSelector(this);
56 //______________________________________________________________________________
57 AliAnalysisSelector::~AliAnalysisSelector()
59 // Dtor. The analysis manager object is sent in the input list and duplicated
60 // on the workers - it needs to be deleted (?)
61 // if (fAnalysis) delete fAnalysis;
64 //______________________________________________________________________________
65 void AliAnalysisSelector::Init(TTree *tree)
67 // Called after Begin/SlaveBegin, assumes that fAnalysis is already initialized.
68 // Is Init called on workers in case of PROOF.
70 Error("Init", "Analysis manager NULL !");
71 Abort("Cannot initialize without analysis manager. Aborting.");
75 if (fAnalysis->GetDebugLevel()>1) {
76 cout << "->AliAnalysisSelector->Init()" << endl;
79 Error("Init", "Input tree is NULL !");
80 Abort("Cannot initialize without tree. Aborting.");
84 fInitialized = fAnalysis->Init(tree);
86 Error("Init", "Some error occured during analysis manager initialization. Aborting.");
87 Abort("Error during AliAnalysisManager::Init()");
91 if (fAnalysis->GetDebugLevel()>1) {
92 cout << "<-AliAnalysisSelector->Init()" << endl;
96 //______________________________________________________________________________
97 void AliAnalysisSelector::Begin(TTree *)
99 // Assembly the input list.
100 RestoreAnalysisManager();
101 if (fAnalysis && fAnalysis->GetDebugLevel()>1) {
102 cout << "->AliAnalysisSelector->Begin: Analysis manager restored" << endl;
106 //______________________________________________________________________________
107 void AliAnalysisSelector::SlaveBegin(TTree *tree)
109 // Called on each worker. We "unpack" analysis manager here and call InitAnalysis.
110 TObject::SetObjectStat(kFALSE);
111 RestoreAnalysisManager();
113 if (fAnalysis->GetDebugLevel()>1) {
114 cout << "->AliAnalysisSelector->SlaveBegin() after Restore" << endl;
116 fAnalysis->SlaveBegin(tree);
117 if (fAnalysis->GetDebugLevel()>1) {
118 cout << "<-AliAnalysisSelector->SlaveBegin()" << endl;
123 //______________________________________________________________________________
124 Bool_t AliAnalysisSelector::Notify()
126 // The Notify() function is called when a new file is opened. This
127 // can be either for a new TTree in a TChain or when when a new TTree
128 // is started when using PROOF. It is normaly not necessary to make changes
129 // to the generated code, but the routine can be extended by the
130 // user if needed. The return value is currently not used.
131 if (fAnalysis) return fAnalysis->Notify();
135 //______________________________________________________________________________
136 Bool_t AliAnalysisSelector::Process(Long64_t entry)
139 if (fAnalysis->GetDebugLevel() > 1) {
140 cout << "->AliAnalysisSelector::Process()" << endl;
142 Int_t nobjCount = TProcessID::GetObjectCount();
143 Int_t returnCode = fAnalysis->GetEntry(entry);
145 cout << "Error retrieving event. Skipping this event." << endl;
147 fAnalysis->ExecAnalysis();
148 TProcessID::SetObjectCount(nobjCount);
149 if (fAnalysis->GetDebugLevel() > 1) {
150 cout << "<-AliAnalysisSelector::Process()" << endl;
155 //______________________________________________________________________________
156 void AliAnalysisSelector::RestoreAnalysisManager()
158 // Restores analysis manager from the input list.
162 while ((obj=next())) {
163 if (obj->IsA() == AliAnalysisManager::Class()) {
164 fAnalysis = (AliAnalysisManager*)obj;
165 fAnalysis->SetSelector(this);
166 if (fAnalysis->GetDebugLevel()>1) {
167 cout << "->AliAnalysisSelector->RestoreAnalysisManager: Analysis manager restored" << endl;
173 Error("SlaveBegin", "Analysis manager not found in the input list");
179 //______________________________________________________________________________
180 void AliAnalysisSelector::SlaveTerminate()
182 // The SlaveTerminate() function is called after all entries or objects
183 // have been processed. When running with PROOF SlaveTerminate() is called
184 // on each slave server.
185 if (fStatus == -1) return; // TSelector won't abort...
186 if (fAnalysis->GetAnalysisType() == AliAnalysisManager::kMixingAnalysis) return;
187 if (fAnalysis->GetDebugLevel() > 1) {
188 cout << "->AliAnalysisSelector::SlaveTerminate()" << endl;
190 fAnalysis->PackOutput(fOutput);
191 if (fAnalysis->GetDebugLevel() > 1) {
192 cout << "<-AliAnalysisSelector::SlaveTerminate()" << endl;
196 //______________________________________________________________________________
197 void AliAnalysisSelector::Terminate()
199 // The Terminate() function is the last function to be called during
200 // a query. It always runs on the client, it can be used to present
201 // the results graphically or save the results to file.
202 if (fStatus == -1) return; // TSelector won't abort...
204 Error("Terminate","AliAnalysisSelector::Terminate: No analysis manager!!!");
207 // No Terminate() in case of event mixing
208 if (fAnalysis->GetAnalysisType() == AliAnalysisManager::kMixingAnalysis) return;
209 if (fAnalysis->GetDebugLevel() > 1) {
210 cout << "->AliAnalysisSelector::Terminate()" << endl;
212 fAnalysis->UnpackOutput(fOutput);
213 fAnalysis->Terminate();
214 if (fAnalysis->GetDebugLevel() > 1) {
215 cout << "<-AliAnalysisSelector::Terminate()" << endl;