/usr/include/root/RooLinkedListElem.h is in libroot-roofit-dev 5.34.00-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Project: RooFit *
* Package: RooFitCore *
* File: $Id: RooLinkedListElem.h,v 1.11 2007/05/11 09:11:30 verkerke Exp $
* Authors: *
* WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu *
* DK, David Kirkby, UC Irvine, dkirkby@uci.edu *
* *
* Copyright (c) 2000-2005, Regents of the University of California *
* and Stanford University. All rights reserved. *
* *
* Redistribution and use in source and binary forms, *
* with or without modification, are permitted according to the terms *
* listed in LICENSE (http://roofit.sourceforge.net/license.txt) *
*****************************************************************************/
#ifndef ROO_LINKED_LIST_ELEM
#define ROO_LINKED_LIST_ELEM
#include "Rtypes.h"
class TObject ;
class RooLinkedListElem ;
class TBuffer ;
class RooLinkedListElem {
public:
// Initial element ctor
RooLinkedListElem() :
_prev(0), _next(0), _arg(0), _refCount(0), _suc(0) {
}
void init(TObject* arg, RooLinkedListElem* after=0, Int_t* suc=0) {
_arg = arg ;
_refCount = 1 ;
if (after) {
_prev = after ;
_next = after->_next ;
after->_next = this ;
if (_next) {
_next->_prev = this ;
}
}
_suc = suc ;
(*_suc)++ ;
}
void release() {
if (_prev) _prev->_next = _next ;
if (_next) _next->_prev = _prev ;
_prev = 0 ;
_next = 0 ;
(*_suc)-- ;
}
RooLinkedListElem(TObject* arg) :
// Constructor with payload
_prev(0), _next(0), _arg(arg), _refCount(1), _suc(0) {
}
RooLinkedListElem(TObject* arg, RooLinkedListElem* after) :
// Constructor with payload and next chain element
_prev(after), _next(after->_next), _arg(arg), _refCount(1), _suc(0) {
// Insert self in link
after->_next = this ;
if (_next) _next->_prev = this ;
}
// Destructor
virtual ~RooLinkedListElem() {
// Remove self from link
if (_prev) _prev->_next = _next ;
if (_next) _next->_prev = _prev ;
}
Int_t refCount() const { return _refCount ; }
Int_t incRefCount() { return ++_refCount ; }
Int_t decRefCount() { return --_refCount ; }
protected:
friend class RooHashTable ;
friend class RooLinkedList ;
friend class RooLinkedListIter ;
friend class RooFIter ;
RooLinkedListElem* _prev ; // Link to previous element in list
RooLinkedListElem* _next ; // Link to next element in list
TObject* _arg ; // Link to contents
Int_t _refCount ; //! Reference count
Int_t* _suc ; //! Store use count
protected:
// Forbidden
RooLinkedListElem(const RooLinkedListElem&) ;
ClassDef(RooLinkedListElem,0) // Element of RooLinkedList container class
} ;
#endif
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