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xAODBranchAddress.cxx
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1 
3 /*
4  Copyright (C) 2002-2022 CERN for the benefit of the ATLAS collaboration
5 */
6 
7 // xAODBranchAddress.cxx
8 // Implementation file for class Athena::xAODBranchAddress
9 // Author: Johannes ELmsheuser, Will Buttinger
11 
12 // AthenaRootComps includes
13 #include "xAODBranchAddress.h"
14 #include "xAODTEvent.h"
15 
16 // fwk includes
17 #include "GaudiKernel/System.h"
20 
21 // ROOT includes
22 #include "TBranch.h"
23 #include "TTree.h"
24 #include "TLeaf.h"
25 
26 #include "xAODRootAccess/TEvent.h"
27 #include "TClass.h"
28 #include <typeinfo>
29 
30 
31 namespace Athena {
32 
34 // Public methods:
36 
37 // Constructors
39 
42  GenericAddress(),
43  m_ptr ()
44 {}
45 
48  GenericAddress(rhs),
49  m_ptr (rhs.m_ptr)
50 {}
51 
55 {
56  if (this != &rhs) {
57  GenericAddress::operator=(rhs);
58  m_ptr = rhs.m_ptr;
59  }
60  return *this;
61 }
62 
65  const CLID& clid,
66  const std::string& p1,
67  const std::string& p2,
68  unsigned long ip1,
69  unsigned long ip2) :
70  GenericAddress(svc, clid, p1, p2, ip1, ip2),
71  m_ptr(0) //the actual data object that is retrieved
72 {
73  // std::cerr << "::RBA::+RBA... (this=" << this << ") br=["
74  // << this->par()[1] << "]\n";
75 }
76 
79 {
80  // std::cerr << "::RBA::~RBA... (this=" << this << ") br=["
81  // << this->par()[1] << "]\n";
82 }
83 
84 
87 {
88  //std::cout << "xAODBranchAddress::tevent ..." << std::endl;
89  return reinterpret_cast<xAOD::xAODTEvent*>(reinterpret_cast<unsigned long*>(this->ipar()[0]));
90 }
91 
92 void
94 {
95 
96  //std::cout << "xAODBranchAddress::setTEvent ..." << std::endl;
97 
98 
99 
100  const std::string& br_name = this->par()[1];
101  xAOD::xAODTEvent* tevent = this->tevent();
102  //xAOD::TEvent* tevent = this->tevent();
103  //std::cout << "xAODBranchAddress::setTEventAddress br_name=" << br_name << std::endl;
104  //std::cout << "xAODBranchAddress::setTEventAddress tevent=" << tevent << " entries = " << tevent->getEntries() << std::endl;
105  //std::cout << "xAODBranchAddress::setTEventAddress tlID()=" << this->clID() << std::endl;
106 
107  const std::type_info* ti = CLIDRegistry::CLIDToTypeinfo(this->clID());
108  //std::cout << "xAODBranchAddress::setTEventAddress ti=" << ti << std::endl;
109 
110  // void* addr = *(char**)&tevent;
111 
112 
113  //we use the ipar()[1] to flag if we retrieve main event info (0) or metadata (1) (see xAODEventSelector where it creates BranchAddress)
114  switch( (this->ipar()[1]) ) {
115  case 0:
116  {//reading event level info
117  tevent->setActive(); //ensure we are active tevent
118  void* addr ATLAS_THREAD_SAFE = const_cast<void*>(tevent->getInputObject(br_name, *ti));
119  m_ptr = addr;
120  }
121  break;
122  case 1:
123  {//reading metadata
124  //FIXME: NEEED TO ACCESS METADATA
125  //std::cout << "xAODBranchAddress::setTEventAddress metadata " << br_name << std::endl;
126  tevent->setActive(); //ensure we are active tevent
127  void* addr ATLAS_THREAD_SAFE = const_cast<void*>(tevent->getInputObject(br_name, *ti, false, true));
128  m_ptr = addr;
129  }
130  break;
131  }
132 
133  //std::cout << "xAODBranchAddress::setTEventAddress m_ptr=" << m_ptr << std::endl;
134 
135 
136 }
137 
139 // Protected methods:
141 
142 } //> end namespace Athena
Athena::xAODBranchAddress
Definition: xAODBranchAddress.h:31
xAOD::xAODTEvent::getInputObject
const void * getInputObject(SG::sgkey_t key, const std::type_info &ti, bool silent=false) override
Function for retrieving an input object in a non-template way.
Definition: Control/xAODRootAccess/Root/TEvent.cxx:1939
TRTCalib_cfilter.p1
p1
Definition: TRTCalib_cfilter.py:130
CLIDRegistry::CLIDToTypeinfo
static const std::type_info * CLIDToTypeinfo(CLID clid)
Translate between CLID and type_info.
Definition: CLIDRegistry.cxx:136
Athena::xAODBranchAddress::setTEventAddress
void setTEventAddress()
Definition: xAODBranchAddress.cxx:93
TRTCalib_cfilter.p2
p2
Definition: TRTCalib_cfilter.py:131
Athena::xAODBranchAddress::~xAODBranchAddress
virtual ~xAODBranchAddress()
Destructor:
Definition: xAODBranchAddress.cxx:78
Athena
Some weak symbol referencing magic...
Definition: AthLegacySequence.h:21
TEvent.h
xAODTEvent.h
xAOD::xAODTEvent
Definition: xAODTEvent.h:23
Handler::svc
AthROOTErrorHandlerSvc * svc
Definition: AthROOTErrorHandlerSvc.cxx:10
Athena::xAODBranchAddress::tevent
xAOD::xAODTEvent * tevent()
Definition: xAODBranchAddress.cxx:86
CLID
uint32_t CLID
The Class ID type.
Definition: Event/xAOD/xAODCore/xAODCore/ClassID_traits.h:47
xAODBranchAddress.h
createCoolChannelIdFile.par
par
Definition: createCoolChannelIdFile.py:29
Athena::xAODBranchAddress::operator=
xAODBranchAddress & operator=(const xAODBranchAddress &rhs)
Assignment operator:
Definition: xAODBranchAddress.cxx:54
Athena::xAODBranchAddress::xAODBranchAddress
xAODBranchAddress()
Default constructor:
Definition: xAODBranchAddress.cxx:41
CLIDRegistry.h
a static registry of CLID->typeName entries. NOT for general use. Use ClassIDSvc instead.
Athena::xAODBranchAddress::m_ptr
void * m_ptr
Definition: xAODBranchAddress.h:65
ATLAS_THREAD_SAFE
#define ATLAS_THREAD_SAFE
Definition: checker_macros.h:211
checker_macros.h
Define macros for attributes used to control the static checker.
xAOD::TEvent::setActive
void setActive() const
Set this event object as the currently active one.
Definition: Control/xAODRootAccess/Root/TEvent.cxx:861