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1 | /************************************************************************** | |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
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 | **************************************************************************/ | |
15 | ||
16 | /* $Id$ */ | |
17 | // Author: Andrei Gheata, 31/05/2006 | |
18 | ||
19 | //============================================================================== | |
20 | // AliAnalysisSelector - A transparent selector to be created by | |
21 | // AliAnalysisManager to handle analysis. | |
22 | //============================================================================== | |
23 | ||
24 | #include <Riostream.h> | |
25 | #include <TProcessID.h> | |
26 | #include <TROOT.h> | |
27 | ||
28 | #include "AliAnalysisManager.h" | |
29 | #include "AliAnalysisTask.h" | |
30 | #include "AliAnalysisDataContainer.h" | |
31 | #include "AliAnalysisSelector.h" | |
32 | ||
33 | using std::cout; | |
34 | using std::endl; | |
35 | ClassImp(AliAnalysisSelector) | |
36 | ||
37 | //______________________________________________________________________________ | |
38 | AliAnalysisSelector::AliAnalysisSelector() | |
39 | :TSelector(), | |
40 | fInitialized(kFALSE), | |
41 | fAnalysis(NULL) | |
42 | { | |
43 | // Dummy ctor. | |
44 | fAnalysis = AliAnalysisManager::GetAnalysisManager(); | |
45 | if (fAnalysis) fAnalysis->SetSelector(this); | |
46 | } | |
47 | ||
48 | //______________________________________________________________________________ | |
49 | AliAnalysisSelector::AliAnalysisSelector(AliAnalysisManager *mgr) | |
50 | :TSelector(), | |
51 | fInitialized(kFALSE), | |
52 | fAnalysis(mgr) | |
53 | { | |
54 | // Constructor. Called by AliAnalysisManager which registers itself on the | |
55 | // selector running on the master. | |
56 | mgr->SetSelector(this); | |
57 | } | |
58 | ||
59 | //______________________________________________________________________________ | |
60 | AliAnalysisSelector::~AliAnalysisSelector() | |
61 | { | |
62 | // Dtor. The analysis manager object is sent in the input list and duplicated | |
63 | // on the workers - it needs to be deleted (?) | |
64 | // if (fAnalysis) delete fAnalysis; | |
65 | } | |
66 | ||
67 | //______________________________________________________________________________ | |
68 | void AliAnalysisSelector::Init(TTree *tree) | |
69 | { | |
70 | // Called after Begin/SlaveBegin, assumes that fAnalysis is already initialized. | |
71 | // Is Init called on workers in case of PROOF. | |
72 | if (!fAnalysis) { | |
73 | Error("Init", "Analysis manager NULL !"); | |
74 | Abort("Cannot initialize without analysis manager. Aborting."); | |
75 | SetStatus(-1); | |
76 | return; | |
77 | } | |
78 | if (fAnalysis->GetDebugLevel()>1) { | |
79 | cout << "->AliAnalysisSelector->Init()" << endl; | |
80 | } | |
81 | if (!tree) { | |
82 | Error("Init", "Input tree is NULL !"); | |
83 | Abort("Cannot initialize without tree. Aborting."); | |
84 | SetStatus(-1); | |
85 | return; | |
86 | } | |
87 | fInitialized = fAnalysis->Init(tree); | |
88 | if (!fInitialized) { | |
89 | Error("Init", "Some error occured during analysis manager initialization. Aborting."); | |
90 | Abort("Error during AliAnalysisManager::Init()"); | |
91 | SetStatus(-1); | |
92 | return; | |
93 | } | |
94 | if (fAnalysis->GetDebugLevel()>1) { | |
95 | cout << "<-AliAnalysisSelector->Init()" << endl; | |
96 | } | |
97 | } | |
98 | ||
99 | //______________________________________________________________________________ | |
100 | void AliAnalysisSelector::Begin(TTree *) | |
101 | { | |
102 | // Assembly the input list. | |
103 | RestoreAnalysisManager(); | |
104 | if (fAnalysis && fAnalysis->GetDebugLevel()>1) { | |
105 | cout << "->AliAnalysisSelector->Begin: Analysis manager restored" << endl; | |
106 | gROOT->SetMustClean(fAnalysis->MustClean()); | |
107 | } | |
108 | } | |
109 | ||
110 | //______________________________________________________________________________ | |
111 | void AliAnalysisSelector::SlaveBegin(TTree *tree) | |
112 | { | |
113 | // Called on each worker. We "unpack" analysis manager here and call InitAnalysis. | |
114 | RestoreAnalysisManager(); | |
115 | if (fAnalysis) { | |
116 | gROOT->SetMustClean(fAnalysis->MustClean()); | |
117 | if (fAnalysis->GetDebugLevel()>1) { | |
118 | cout << "->AliAnalysisSelector->SlaveBegin() after Restore" << endl; | |
119 | } | |
120 | fAnalysis->SlaveBegin(tree); | |
121 | if (fAnalysis->GetDebugLevel()>1) { | |
122 | cout << "<-AliAnalysisSelector->SlaveBegin()" << endl; | |
123 | } | |
124 | } | |
125 | } | |
126 | ||
127 | //______________________________________________________________________________ | |
128 | Bool_t AliAnalysisSelector::Notify() | |
129 | { | |
130 | // The Notify() function is called when a new file is opened. This | |
131 | // can be either for a new TTree in a TChain or when when a new TTree | |
132 | // is started when using PROOF. It is normaly not necessary to make changes | |
133 | // to the generated code, but the routine can be extended by the | |
134 | // user if needed. The return value is currently not used. | |
135 | if (fAnalysis) return fAnalysis->Notify(); | |
136 | return kFALSE; | |
137 | } | |
138 | ||
139 | //______________________________________________________________________________ | |
140 | Bool_t AliAnalysisSelector::Process(Long64_t entry) | |
141 | { | |
142 | // Event loop. | |
143 | static Int_t count = 0; | |
144 | count++; | |
145 | if (fAnalysis->GetDebugLevel() > 1) { | |
146 | cout << "->AliAnalysisSelector::Process()" << endl; | |
147 | } | |
148 | static Bool_t init=kTRUE; | |
149 | static Int_t nobjCount = 0; | |
150 | if(init) { | |
151 | nobjCount = TProcessID::GetObjectCount(); | |
152 | init=kFALSE; | |
153 | } | |
154 | TProcessID::SetObjectCount(nobjCount); | |
155 | Int_t returnCode = fAnalysis->GetEntry(entry); | |
156 | if (returnCode <= 0) { | |
157 | cout << "Error retrieving event:" << entry << " Skipping ..." << endl; | |
158 | fAnalysis->CountEvent(1,0,1,0); | |
159 | // Try to skip file | |
160 | Abort("Bad stream to file. Trying next image.", kAbortFile); | |
161 | return kFALSE; | |
162 | } else { | |
163 | fAnalysis->ExecAnalysis(); | |
164 | fAnalysis->CountEvent(1,1,0,0); | |
165 | } | |
166 | if (fAnalysis->GetDebugLevel() > 1) { | |
167 | cout << "<-AliAnalysisSelector::Process()" << endl; | |
168 | } | |
169 | return kTRUE; | |
170 | } | |
171 | ||
172 | //______________________________________________________________________________ | |
173 | void AliAnalysisSelector::RestoreAnalysisManager() | |
174 | { | |
175 | // Restores analysis manager from the input list. | |
176 | if (!fAnalysis) { | |
177 | TIter next(fInput); | |
178 | TObject *obj; | |
179 | while ((obj=next())) { | |
180 | if (obj->IsA() == AliAnalysisManager::Class()) { | |
181 | fAnalysis = (AliAnalysisManager*)obj; | |
182 | fAnalysis->SetSelector(this); | |
183 | if (fAnalysis->GetDebugLevel()>1) { | |
184 | cout << "->AliAnalysisSelector->RestoreAnalysisManager: Analysis manager restored" << endl; | |
185 | } | |
186 | break; | |
187 | } | |
188 | } | |
189 | if (!fAnalysis) { | |
190 | Error("SlaveBegin", "Analysis manager not found in the input list"); | |
191 | return; | |
192 | } | |
193 | } | |
194 | } | |
195 | ||
196 | //______________________________________________________________________________ | |
197 | void AliAnalysisSelector::SlaveTerminate() | |
198 | { | |
199 | // The SlaveTerminate() function is called after all entries or objects | |
200 | // have been processed. When running with PROOF SlaveTerminate() is called | |
201 | // on each slave server. | |
202 | gROOT->SetMustClean(kTRUE); | |
203 | if (fStatus == -1) return; // TSelector won't abort... | |
204 | if (fAnalysis->GetAnalysisType() == AliAnalysisManager::kMixingAnalysis) return; | |
205 | if (fAnalysis->GetDebugLevel() > 1) { | |
206 | cout << "->AliAnalysisSelector::SlaveTerminate()" << endl; | |
207 | } | |
208 | fAnalysis->PackOutput(fOutput); | |
209 | if (fAnalysis->GetDebugLevel() > 1) { | |
210 | cout << "<-AliAnalysisSelector::SlaveTerminate()" << endl; | |
211 | } | |
212 | } | |
213 | ||
214 | //______________________________________________________________________________ | |
215 | void AliAnalysisSelector::Terminate() | |
216 | { | |
217 | // The Terminate() function is the last function to be called during | |
218 | // a query. It always runs on the client, it can be used to present | |
219 | // the results graphically or save the results to file. | |
220 | gROOT->SetMustClean(kTRUE); | |
221 | if (fStatus == -1) return; // TSelector won't abort... | |
222 | if (!fAnalysis) { | |
223 | Error("Terminate","AliAnalysisSelector::Terminate: No analysis manager!!!"); | |
224 | return; | |
225 | } | |
226 | // No Terminate() in case of event mixing | |
227 | if (fAnalysis->GetAnalysisType() == AliAnalysisManager::kMixingAnalysis) return; | |
228 | if (fAnalysis->GetDebugLevel() > 1) { | |
229 | cout << "->AliAnalysisSelector::Terminate()" << endl; | |
230 | } | |
231 | fAnalysis->UnpackOutput(fOutput); | |
232 | fAnalysis->Terminate(); | |
233 | if (fAnalysis->GetDebugLevel() > 1) { | |
234 | cout << "<-AliAnalysisSelector::Terminate()" << endl; | |
235 | } | |
236 | } |