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fab17817 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-2007, 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 | ||
18 | //------------------------------------------------------------------------- | |
19 | // Event handler for multiple VEvent input. | |
20 | // This class handles multiple inputs for event mixing. | |
21 | // Author: Andreas Morsch, CERN | |
22 | //------------------------------------------------------------------------- | |
23 | ||
24 | #include "AliMultiEventInputHandler.h" | |
25 | #include "AliVEvent.h" | |
26 | #include "AliAODEvent.h" | |
27 | #include "AliESDEvent.h" | |
28 | #include "AliVEventPool.h" | |
29 | #include "AliLog.h" | |
30 | #include <TObjArray.h> | |
31 | #include <TTree.h> | |
28a79204 | 32 | #include <TList.h> |
33 | #include <TEntryList.h> | |
fab17817 | 34 | |
35 | ||
36 | ClassImp(AliMultiEventInputHandler) | |
37 | ||
38 | AliMultiEventInputHandler::AliMultiEventInputHandler() : | |
39 | AliInputEventHandler(), | |
40 | fBufferSize(0), | |
41 | fFormat(1), | |
42 | fNBuffered(0), | |
43 | fIndex(0), | |
44 | fCurrentBin(0), | |
28a79204 | 45 | fCurrentEvt(0), |
46 | fInit(0), | |
fab17817 | 47 | fEventPool(0), |
48 | fEventBuffer(0) | |
49 | { | |
50 | // Default constructor | |
51 | } | |
52 | ||
53 | //______________________________________________________________________________ | |
54 | AliMultiEventInputHandler::AliMultiEventInputHandler(Int_t size, Int_t format) : | |
55 | AliInputEventHandler(), | |
56 | fBufferSize(size), | |
57 | fFormat(format), | |
58 | fNBuffered(0), | |
59 | fIndex(0), | |
60 | fCurrentBin(0), | |
28a79204 | 61 | fCurrentEvt(0), |
62 | fInit(0), | |
fab17817 | 63 | fEventPool(0), |
67b28e0a | 64 | fEventBuffer(0) |
fab17817 | 65 | { |
67b28e0a | 66 | // constructor |
fab17817 | 67 | } |
68 | ||
69 | //______________________________________________________________________________ | |
70 | AliMultiEventInputHandler::AliMultiEventInputHandler(const char* name, const char* title, Int_t size, Int_t format): | |
71 | AliInputEventHandler(name, title), | |
72 | fBufferSize(size), | |
73 | fFormat(format), | |
74 | fNBuffered(0), | |
75 | fIndex(0), | |
76 | fCurrentBin(0), | |
28a79204 | 77 | fCurrentEvt(0), |
78 | fInit(0), | |
fab17817 | 79 | fEventPool(0), |
67b28e0a | 80 | fEventBuffer(0) |
fab17817 | 81 | { |
82 | // Constructor | |
67b28e0a | 83 | |
fab17817 | 84 | } |
85 | ||
86 | //______________________________________________________________________________ | |
87 | AliMultiEventInputHandler::~AliMultiEventInputHandler() | |
88 | { | |
89 | // Destructor | |
90 | } | |
91 | ||
92 | Bool_t AliMultiEventInputHandler::Init(TTree* tree, Option_t* /*opt*/) | |
93 | { | |
94 | // Initialisation necessary for each new tree | |
67b28e0a | 95 | if (!fEventBuffer) { |
96 | fEventBuffer = new AliVEvent*[fBufferSize]; | |
97 | ||
98 | for (Int_t i = 0; i < fBufferSize; i++) | |
99 | if (fFormat == 1) { | |
100 | fEventBuffer[i] = new AliAODEvent(); | |
101 | } else if (fFormat == 0) { | |
102 | fEventBuffer[i] = new AliESDEvent(); | |
103 | } else{ | |
104 | AliWarning(Form("Unknown Format %5d", fFormat)); | |
105 | } | |
106 | } | |
107 | ||
108 | ||
fab17817 | 109 | fTree = tree; |
28a79204 | 110 | fInit = 1; |
111 | ||
fab17817 | 112 | if (!fTree) return kFALSE; |
47482059 | 113 | for (Int_t i = 0; i < fBufferSize; i++) |
114 | fEventBuffer[i]->Clear(); | |
fab17817 | 115 | fIndex = 0; |
116 | fNBuffered = 1; | |
117 | return kTRUE; | |
118 | } | |
119 | ||
47482059 | 120 | |
121 | Bool_t AliMultiEventInputHandler::Notify(const char */*path*/) | |
122 | { | |
67b28e0a | 123 | // Connect to new tree |
28a79204 | 124 | |
125 | TList* connectedList = (TList*) (fTree->GetUserInfo()->FindObject("AODObjectsConnectedToTree")); | |
126 | if (connectedList && !fInit) { | |
67b28e0a | 127 | fEventBuffer[0]->ReadFromTree(fTree, "reconnect"); |
28a79204 | 128 | } else { |
129 | if (fInit) fEventBuffer[0]->ReadFromTree(fTree, ""); | |
588195ca | 130 | } |
131 | ||
28a79204 | 132 | fCurrentEvt = 0; |
133 | fInit = 0; | |
67b28e0a | 134 | |
47482059 | 135 | return (kTRUE); |
136 | } | |
137 | ||
fab17817 | 138 | Bool_t AliMultiEventInputHandler::BeginEvent(Long64_t /*entry*/) |
139 | { | |
140 | // Actions before analysis of each event | |
141 | // | |
142 | // Reset the number of events buffered for this bin to 0 | |
143 | if (fCurrentBin != (fEventPool->BinNumber())) { | |
144 | fCurrentBin = fEventPool->BinNumber(); | |
145 | fNBuffered = 0; | |
146 | } | |
147 | return kTRUE; | |
148 | } | |
149 | ||
150 | Bool_t AliMultiEventInputHandler::FinishEvent() | |
151 | { | |
152 | // | |
153 | // Connect the next event in the buffer to the tree | |
154 | fIndex++; | |
155 | ||
156 | fIndex %= fBufferSize; | |
157 | AliInfo(Form("Connecting buffer entry %5d", fIndex)); | |
47482059 | 158 | fEventBuffer[fIndex]->Clear(); |
28a79204 | 159 | fCurrentEvt++; |
160 | if (fEventBuffer[fIndex]->GetList() && fCurrentEvt > (fBufferSize - 1)) | |
161 | fEventBuffer[fIndex]->GetList()->Delete(); | |
162 | ||
fab17817 | 163 | fEventBuffer[fIndex]->ReadFromTree(fTree, "reconnect"); |
164 | ||
165 | fNBuffered++; | |
166 | if (fNBuffered > fBufferSize) fNBuffered = fBufferSize; | |
167 | ||
28a79204 | 168 | Int_t nmax = fTree->GetEntries(); |
169 | if (fTree->GetEntryList()) { | |
170 | nmax = (fTree->GetEntryList()->GetN()); | |
171 | } else { | |
172 | if (fTree->GetTree()) nmax = fTree->GetTree()->GetEntries(); | |
173 | } | |
174 | ||
175 | if (fCurrentEvt == nmax) | |
176 | { | |
177 | for (Int_t i = 0; i < fBufferSize; i++) { | |
178 | fEventBuffer[i]->Clear(); | |
179 | } | |
180 | } | |
181 | ||
fab17817 | 182 | return (kTRUE); |
183 | } | |
184 | ||
fab17817 | 185 | AliVEvent* AliMultiEventInputHandler::GetEvent(Int_t iev) const |
186 | { | |
187 | // Get event number iev from buffer | |
188 | if ((iev < 0) || (iev >= fBufferSize)) | |
189 | { | |
190 | AliWarning(Form("Event number out of range: %10d", iev)); | |
191 | return 0; | |
192 | } | |
193 | ||
194 | iev = fIndex - (fBufferSize - 1 - iev); | |
195 | if (iev < 0) iev += fBufferSize; | |
196 | AliInfo(Form("Event index in buffer is %5d", iev)); | |
197 | return (fEventBuffer[iev]); | |
198 | } | |
199 |