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4338f373 | 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 AOD input. | |
20 | // This class handles multiple inputs for event mixing. | |
21 | // Author: Andreas Morsch, CERN | |
22 | //------------------------------------------------------------------------- | |
23 | ||
24 | #include "AliMultiAODInputHandler.h" | |
25 | //#include "AliEventPool.h" | |
26 | #include "AliAODEvent.h" | |
27 | #include "AliLog.h" | |
28 | #include <TObjArray.h> | |
29 | #include <TTree.h> | |
30 | ||
31 | ||
32 | ClassImp(AliMultiAODInputHandler) | |
33 | ||
34 | //______________________________________________________________________________ | |
35 | AliMultiAODInputHandler::AliMultiAODInputHandler(Int_t size) : | |
36 | AliInputEventHandler(), | |
37 | fBufferSize(size), | |
38 | fNBuffered(0), | |
39 | fIndex(0), | |
40 | fTree(0), | |
41 | fEventPool(0), | |
42 | fEventBuffer(new AliAODEvent*[size]) | |
43 | { | |
44 | // Default constructor | |
45 | for (Int_t i = 0; i < size; i++) | |
46 | fEventBuffer[i] = new AliAODEvent(); | |
47 | } | |
48 | ||
49 | //______________________________________________________________________________ | |
50 | AliMultiAODInputHandler::AliMultiAODInputHandler(const char* name, const char* title, Int_t size): | |
51 | AliInputEventHandler(name, title), | |
52 | fBufferSize(size), | |
53 | fNBuffered(0), | |
54 | fIndex(0), | |
55 | fTree(0), | |
56 | fEventPool(0), | |
57 | fEventBuffer(new AliAODEvent*[size]) | |
58 | { | |
59 | // Constructor | |
60 | for (Int_t i = 0; i < size; i++) | |
61 | fEventBuffer[i] = new AliAODEvent(); | |
62 | } | |
63 | ||
64 | //______________________________________________________________________________ | |
65 | AliMultiAODInputHandler::~AliMultiAODInputHandler() | |
66 | { | |
67 | // Destructor | |
68 | } | |
69 | ||
70 | Bool_t AliMultiAODInputHandler::Init(TTree* tree, Option_t* /*opt*/) | |
71 | { | |
72 | // Initialisation necessary for each new tree | |
73 | fTree = tree; | |
74 | if (!fTree) return kFALSE; | |
75 | // Get pointer to AOD event | |
76 | fEventBuffer[0]->ReadFromTree(fTree); | |
77 | fIndex = 0; | |
78 | fNBuffered = 1; | |
79 | return kTRUE; | |
80 | } | |
81 | ||
82 | Bool_t AliMultiAODInputHandler::FinishEvent() | |
83 | { | |
84 | // | |
85 | // Connect the next event in the buffer to the tree | |
86 | fIndex++; | |
87 | fNBuffered++; | |
88 | if (fNBuffered > fBufferSize) fNBuffered = fBufferSize; | |
89 | ||
90 | fIndex %= fBufferSize; | |
91 | AliInfo(Form("Connecting buffer entry %5d", fIndex)); | |
92 | fEventBuffer[fIndex]->Clear(); | |
93 | fEventBuffer[fIndex]->ReadFromTree(fTree, "reconnect"); | |
94 | return (kTRUE); | |
95 | } | |
96 | ||
97 | ||
c9f05157 | 98 | AliAODEvent* AliMultiAODInputHandler::GetEvent(Int_t iev) const |
4338f373 | 99 | { |
100 | // Get event number iev from buffer | |
101 | if ((iev < 0) || (iev >= fBufferSize)) | |
102 | { | |
103 | AliWarning(Form("Event number out of range: %10d", iev)); | |
104 | return 0; | |
105 | } | |
106 | ||
107 | iev = fIndex - (fBufferSize - 1 - iev); | |
108 | if (iev < 0) iev += fBufferSize; | |
109 | AliInfo(Form("Event index in buffer is %5d", iev)); | |
110 | return (fEventBuffer[iev]); | |
111 | } | |
112 |