| Geant4 Cross Reference |
1 //
2 // ********************************************************************
3 // * License and Disclaimer *
4 // * *
5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided under the terms and *
7 // * conditions of the Geant4 Software License, included in the file *
8 // * LICENSE and available at http://cern.ch/geant4/license . These *
9 // * include a list of copyright holders. *
10 // * *
11 // * Neither the authors of this software system, nor their employing *
12 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file LICENSE and URL above *
16 // * for the full disclaimer and the limitation of liability. *
17 // * *
18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboration. *
20 // * By using, copying, modifying or distributing the software (or *
21 // * any work based on the software) you agree to acknowledge its *
22 // * use in resulting scientific publications, and indicate your *
23 // * acceptance of all terms of the Geant4 Software license. *
24 // ********************************************************************
25 //
26 //
27 // Author: Ivana Hrivnacova, 26/08/2021 (ivana@ipno.in2p3.fr)
28
29 #include "G4AnalysisUtilities.hh"
30 #include "G4RootRFileDef.hh"
31
32 #include "tools/rroot/file"
33 #include "tools/rroot/rall"
34 #include "tools/rroot/streamers"
35
36 //_____________________________________________________________________________
37 template <typename HT>
38 inline
39 tools::rroot::buffer* G4RootHnRFileManager<HT>::GetBuffer(
40 const G4String& fileName, const G4String& dirName, const G4String& objectName)
41 {
42 // Get buffer for reading histogram or profile specified by objectNmae
43 // for a file specified by fileName;
44 // Open the file if it was not yet open
45
46 // Histograms and profiles are not saved per thread
47 G4bool isPerThread = false;
48
49 // Get or open a file
50 auto rfileTuple = fRFileManager->GetRFile(fileName, isPerThread);
51 if (rfileTuple == nullptr) {
52 if ( ! fRFileManager->OpenRFile(fileName, isPerThread) ) {
53 return nullptr;
54 }
55 rfileTuple = fRFileManager->GetRFile(fileName, isPerThread);
56 }
57 auto rfile = std::get<0>(*rfileTuple);
58
59 // Get or open a directory if dirName is defined
60 tools::rroot::TDirectory* histoDirectory = nullptr;
61 if ( histoDirectory == nullptr ) {
62 // Retrieve directory only once as analysis manager supports only
63 // 1 histo directory par file)
64 if ( ! dirName.empty() ) {
65 histoDirectory = tools::rroot::find_dir(rfile->dir(), dirName);
66 if ( histoDirectory != nullptr ) {
67 std::get<1>(*rfileTuple) = histoDirectory;
68 }
69 else {
70 G4Analysis::Warn(
71 "Directory " + dirName + " not found in file " + fileName + ".",
72 fkClass, "ReadNtupleImpl");
73 return nullptr;
74 }
75 }
76 }
77
78 // Get key
79 tools::rroot::key* key = nullptr;
80 if ( histoDirectory != nullptr ) {
81 key = histoDirectory->find_key(objectName);
82 }
83 else {
84 key = rfile->dir().find_key(objectName);
85 }
86 if (key == nullptr) {
87 G4Analysis::Warn(
88 "Key " + objectName + " for Histogram/Profile not found in file " +
89 fileName + ", directory " + dirName, fkClass, "GetBuffer");
90 return nullptr;
91 }
92
93 unsigned int size;
94 char* charBuffer = key->get_object_buffer(*rfile, size);
95
96 if (charBuffer == nullptr) {
97 G4Analysis::Warn(
98 "Cannot get " + objectName + " in file " + fileName,
99 fkClass, "GetBuffer");
100 return nullptr;
101 }
102
103 auto verbose = false;
104 return new tools::rroot::buffer(G4cout, rfile->byte_swap(), size, charBuffer,
105 key->key_length(), verbose);
106 }
107
108 //_____________________________________________________________________________
109 template <>
110 inline
111 tools::histo::h1d* G4RootHnRFileManager<tools::histo::h1d>::ReadT(
112 tools::rroot::buffer* buffer)
113 {
114 return tools::rroot::TH1D_stream(*buffer);
115 }
116
117 //_____________________________________________________________________________
118 template <>
119 inline
120 tools::histo::h2d* G4RootHnRFileManager<tools::histo::h2d>::ReadT(
121 tools::rroot::buffer* buffer)
122 {
123 return tools::rroot::TH2D_stream(*buffer);
124 }
125
126 //_____________________________________________________________________________
127 template <>
128 inline
129 tools::histo::h3d* G4RootHnRFileManager<tools::histo::h3d>::ReadT(
130 tools::rroot::buffer* buffer)
131 {
132 return tools::rroot::TH3D_stream(*buffer);
133 }
134
135 //_____________________________________________________________________________
136 template <>
137 inline
138 tools::histo::p1d* G4RootHnRFileManager<tools::histo::p1d>::ReadT(
139 tools::rroot::buffer* buffer)
140 {
141 return tools::rroot::TProfile_stream(*buffer);
142 }
143
144 //_____________________________________________________________________________
145 template <>
146 inline
147 tools::histo::p2d* G4RootHnRFileManager<tools::histo::p2d>::ReadT(
148 tools::rroot::buffer* buffer)
149 {
150 return tools::rroot::TProfile2D_stream(*buffer);
151 }
152
153 //_____________________________________________________________________________
154 template <typename HT>
155 inline
156 HT* G4RootHnRFileManager<HT>::Read(
157 const G4String& htName, const G4String& fileName, const G4String& dirName,
158 G4bool /*isUserFileName*/)
159 {
160 auto buffer = GetBuffer(fileName, dirName, htName);
161 if ( ! buffer ) {
162 return nullptr;
163 }
164
165 auto ht = ReadT(buffer);
166 delete buffer;
167
168 if ( ! ht ) {
169 G4Analysis::Warn(
170 "Streaming " + htName + " in file " + fileName + " failed.",
171 fkClass, "Read");
172 return nullptr;
173 }
174
175 return ht;
176 }
177