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Reference Guide
RooSharedPropertiesList.cxx
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1 /*****************************************************************************
2  * Project: RooFit *
3  * Package: RooFitCore *
4  * @(#)root/roofitcore:$Id$
5  * Authors: *
6  * WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu *
7  * DK, David Kirkby, UC Irvine, dkirkby@uci.edu *
8  * *
9  * Copyright (c) 2000-2005, Regents of the University of California *
10  * and Stanford University. All rights reserved. *
11  * *
12  * Redistribution and use in source and binary forms, *
13  * with or without modification, are permitted according to the terms *
14  * listed in LICENSE (http://roofit.sourceforge.net/license.txt) *
15  *****************************************************************************/
16 
17 /**
18 \file RooSharedPropertiesList.cxx
19 \class RooSharedPropertiesList
20 \ingroup Roofitcore
21 
22 Class RooSharedPropertiesList maintains the properties of RooRealVars
23 and RooCategories that are clones of each other.
24 **/
25 
26 #include "RooFit.h"
28 #include "RooSharedProperties.h"
29 #include "RooLinkedListIter.h"
30 #include "TIterator.h"
31 #include "RooMsgService.h"
32 #include "Riostream.h"
33 using std::cout ;
34 using std::endl ;
35 
36 using namespace std;
37 
39 ;
40 
41 
42 
43 ////////////////////////////////////////////////////////////////////////////////
44 /// Constructor
45 
47 {
48  _propList.setHashTableSize(1000);
49 }
50 
51 
52 
53 ////////////////////////////////////////////////////////////////////////////////
54 /// Destructor
55 
57 {
58  // Delete all objects in property list
59  RooFIter iter = _propList.fwdIterator() ;
60  RooSharedProperties* prop ;
61  while((prop=(RooSharedProperties*)iter.next())) {
62  delete prop ;
63  }
64 }
65 
66 
67 
68 ////////////////////////////////////////////////////////////////////////////////
69 /// Register property into list and take ownership.
70 ///
71 /// If an existing entry has a UUID that identical to that of the argument prop,
72 /// the argument prop is deleted and a pointer to the already stored is returned to
73 /// eliminate the duplication of instances with a unique identity.
74 ///
75 /// The caller should therefore not refer anymore to the input argument pointer as
76 /// as the object cannot be assumed to be live.
77 
79 {
80  if (prop==0) {
81  oocoutE((TObject*)0,InputArguments) << "RooSharedPropertiesList::ERROR null pointer!:" << endl ;
82  return 0 ;
83  }
84 
85 
86  // If the reference count is non-zero, it is already in the list, so no need
87  // to look it up anymore
88  if (prop->inSharedList()) {
89  prop->increaseRefCount() ;
90  return prop ;
91  }
92 
93  //std::cout << "REGISTER properties " << prop->asString() << " - list size = " << _propList.GetSize() << std::endl;
94  RooSharedProperties* tmp ;
95 
96  std::map<std::string, RooSharedProperties *>::iterator it;
97 
98  it = _newPropList.find( std::string(prop->asString()) );
99  if (it != _newPropList.end() ) {
100  tmp = it->second;
101  if (tmp != prop) {
102  // found another instance with same UUID
103  if (canDeleteIncoming) delete prop;
104  }
105  tmp->increaseRefCount();
106  return tmp;
107  }
108  prop->setInSharedList() ;
109  prop->increaseRefCount() ;
110  _newPropList[ std::string(prop->asString()) ] = prop;
111 
112  return prop ;
113 }
114 
115 
116 
117 ////////////////////////////////////////////////////////////////////////////////
118 /// Decrease reference count of property. If reference count is at zero,
119 /// delete the propery
120 
122 {
123  prop->decreaseRefCount() ;
124 
125  if (prop->refCount()==0) {
126  _propList.Remove(prop) ;
127 
128  std::map<std::string, RooSharedProperties *>::iterator it;
129  it = _newPropList.find( std::string(prop->asString()) );
130  if (it != _newPropList.end() ) _newPropList.erase(it);
131 
132  // We own object if ref-counted list. If count drops to zero, delete object
133  delete prop ;
134  }
135 
136 }
137 
138 
bool Bool_t
Definition: RtypesCore.h:59
STL namespace.
#define oocoutE(o, a)
Definition: RooMsgService.h:47
RooSharedProperties * registerProperties(RooSharedProperties *, Bool_t canDeleteIncoming=kTRUE)
Register property into list and take ownership.
Class RooSharedProperties is the base class for shared properties that can be stored in RooSharedProp...
void unregisterProperties(RooSharedProperties *)
Decrease reference count of property.
virtual ~RooSharedPropertiesList()
Destructor.
RooAbsArg * next()
Bool_t inSharedList() const
#define ClassImp(name)
Definition: Rtypes.h:336
Class RooSharedPropertiesList maintains the properties of RooRealVars and RooCategories that are clon...
Mother of all ROOT objects.
Definition: TObject.h:37