A RooRefCountList is a RooLinkedList that keeps a reference counter with each added node.

Multiple Add()s of the same object will increase the counter instead of adding multiple copies. Remove() decrements the reference count until zero, when the object is actually removed.

Definition at line 21 of file RooRefCountList.h.

Public Member Functions
	RooRefCountList ()
	Default constructor construct lists with initial hash table size of 17.

virtual	~RooRefCountList ()

virtual void	Add (TObject *arg)

virtual void	Add (TObject *obj, Int_t count)
	Add object to list with given reference count increment List takes ownership of object.

Int_t	refCount (TObject *obj) const
	Return reference count associated with 'obj'.

virtual Bool_t	Remove (TObject *obj)
	Remove object from list and if reference count reaches zero delete object itself as well.

virtual Bool_t	RemoveAll (TObject *obj)
	Remove object from list and delete object itself regardless of reference count.

Public Member Functions inherited from RooLinkedList
	RooLinkedList (const RooLinkedList &other)
	Copy constructor.

	RooLinkedList (Int_t htsize=0)

virtual	~RooLinkedList ()
	Destructor.

TObject *	At (int index) const
	Return object stored in sequential position given by index.

RooLinkedListIterImpl	begin () const

void	Clear (Option_t *o=0)
	Remove all elements from collection.

virtual TObject *	Clone (const char *=0) const
	Make a clone of an object using the Streamer facility.

void	Delete (Option_t *o=0)
	Remove all elements in collection and delete all elements NB: Collection does not own elements, this function should be used judiciously by caller.

bool	empty () const

RooLinkedListIterImpl	end () const

TObject *	find (const char *name) const
	Return pointer to object with given name in collection.

RooAbsArg *	findArg (const RooAbsArg *) const
	Return pointer to object with given name in collection.

TObject *	FindObject (const char *name) const
	Return pointer to obejct with given name.

TObject *	FindObject (const TObject *obj) const
	Find object in list.

TObject *	First () const

RooFIter	fwdIterator () const
	Create a one-time-use forward iterator for this list.

Int_t	getHashTableSize () const

const char *	GetName () const
	Returns name of object.

Int_t	GetSize () const

ULong_t	Hash () const
	Return hash value for this object.

Int_t	IndexOf (const char *name) const
	Return position of given object in list.

Int_t	IndexOf (const TObject *arg) const
	Return position of given object in list.

RooLinkedListIter	iterator (Bool_t forward=kTRUE) const
	Create an iterator for this list.

TIterator *	MakeIterator (Bool_t forward=kTRUE) const
	Create a TIterator for this list.

RooLinkedList &	operator= (const RooLinkedList &other)
	Assignment operator, copy contents from 'other'.

void	Print (const char *opt) const
	Print contents of list, defers to Print() function of contained objects.

RooLinkedListIterImpl	rbegin () const

virtual void	RecursiveRemove (TObject *obj)
	If one of the TObject we have a referenced to is deleted, remove the reference.

RooLinkedListIterImpl	rend () const

Bool_t	Replace (const TObject oldArg, const TObject newArg)
	Replace object 'oldArg' in collection with new object 'newArg'.

void	setHashTableSize (Int_t size)
	Change the threshold for hash-table use to given size.

void	SetName (const char *name)

std::size_t	size () const

void	Sort (Bool_t ascend=kTRUE)

void	useNptr (Bool_t flag)

Public Member Functions inherited from TObject
	TObject ()
	TObject constructor.

	TObject (const TObject &object)
	TObject copy ctor.

virtual	~TObject ()
	TObject destructor.

void	AbstractMethod (const char *method) const
	Use this method to implement an "abstract" method that you don't want to leave purely abstract.

virtual void	AppendPad (Option_t *option="")
	Append graphics object to current pad.

virtual void	Browse (TBrowser *b)
	Browse object. May be overridden for another default action.

ULong_t	CheckedHash ()
	Check and record whether this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object.

virtual const char *	ClassName () const
	Returns name of class to which the object belongs.

virtual Int_t	Compare (const TObject *obj) const
	Compare abstract method.

virtual void	Copy (TObject &object) const
	Copy this to obj.

virtual Int_t	DistancetoPrimitive (Int_t px, Int_t py)
	Computes distance from point (px,py) to the object.

virtual void	Draw (Option_t *option="")
	Default Draw method for all objects.

virtual void	DrawClass () const
	Draw class inheritance tree of the class to which this object belongs.

virtual TObject *	DrawClone (Option_t *option="") const
	Draw a clone of this object in the current selected pad for instance with: `gROOT->SetSelectedPad(gPad)`.

virtual void	Dump () const
	Dump contents of object on stdout.

virtual void	Error (const char method, const char msgfmt,...) const
	Issue error message.

virtual void	Execute (const char method, const char params, Int_t *error=0)
	Execute method on this object with the given parameter string, e.g.

virtual void	Execute (TMethod method, TObjArray params, Int_t *error=0)
	Execute method on this object with parameters stored in the TObjArray.

virtual void	ExecuteEvent (Int_t event, Int_t px, Int_t py)
	Execute action corresponding to an event at (px,py).

virtual void	Fatal (const char method, const char msgfmt,...) const
	Issue fatal error message.

virtual Option_t *	GetDrawOption () const
	Get option used by the graphics system to draw this object.

virtual const char *	GetIconName () const
	Returns mime type name of object.

virtual char *	GetObjectInfo (Int_t px, Int_t py) const
	Returns string containing info about the object at position (px,py).

virtual Option_t *	GetOption () const

virtual const char *	GetTitle () const
	Returns title of object.

virtual UInt_t	GetUniqueID () const
	Return the unique object id.

virtual Bool_t	HandleTimer (TTimer *timer)
	Execute action in response of a timer timing out.

Bool_t	HasInconsistentHash () const
	Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e.

virtual void	Info (const char method, const char msgfmt,...) const
	Issue info message.

virtual Bool_t	InheritsFrom (const char *classname) const
	Returns kTRUE if object inherits from class "classname".

virtual Bool_t	InheritsFrom (const TClass *cl) const
	Returns kTRUE if object inherits from TClass cl.

virtual void	Inspect () const
	Dump contents of this object in a graphics canvas.

void	InvertBit (UInt_t f)

Bool_t	IsDestructed () const
	IsDestructed.

virtual Bool_t	IsEqual (const TObject *obj) const
	Default equal comparison (objects are equal if they have the same address in memory).

virtual Bool_t	IsFolder () const
	Returns kTRUE in case object contains browsable objects (like containers or lists of other objects).

R__ALWAYS_INLINE Bool_t	IsOnHeap () const

virtual Bool_t	IsSortable () const

R__ALWAYS_INLINE Bool_t	IsZombie () const

virtual void	ls (Option_t *option="") const
	The ls function lists the contents of a class on stdout.

void	MayNotUse (const char *method) const
	Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary).

virtual Bool_t	Notify ()
	This method must be overridden to handle object notification.

void	Obsolete (const char method, const char asOfVers, const char *removedFromVers) const
	Use this method to declare a method obsolete.

void	operator delete (void *ptr)
	Operator delete.

void	operator delete[] (void *ptr)
	Operator delete [].

void *	operator new (size_t sz)

void *	operator new (size_t sz, void *vp)

void *	operator new[] (size_t sz)

void *	operator new[] (size_t sz, void *vp)

TObject &	operator= (const TObject &rhs)
	TObject assignment operator.

virtual void	Paint (Option_t *option="")
	This method must be overridden if a class wants to paint itself.

virtual void	Pop ()
	Pop on object drawn in a pad to the top of the display list.

virtual Int_t	Read (const char *name)
	Read contents of object with specified name from the current directory.

void	ResetBit (UInt_t f)

virtual void	SaveAs (const char filename="", Option_t option="") const
	Save this object in the file specified by filename.

virtual void	SavePrimitive (std::ostream &out, Option_t *option="")
	Save a primitive as a C++ statement(s) on output stream "out".

void	SetBit (UInt_t f)

void	SetBit (UInt_t f, Bool_t set)
	Set or unset the user status bits as specified in f.

virtual void	SetDrawOption (Option_t *option="")
	Set drawing option for object.

virtual void	SetUniqueID (UInt_t uid)
	Set the unique object id.

virtual void	SysError (const char method, const char msgfmt,...) const
	Issue system error message.

R__ALWAYS_INLINE Bool_t	TestBit (UInt_t f) const

Int_t	TestBits (UInt_t f) const

virtual void	UseCurrentStyle ()
	Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked.

virtual void	Warning (const char method, const char msgfmt,...) const
	Issue warning message.

virtual Int_t	Write (const char *name=0, Int_t option=0, Int_t bufsize=0)
	Write this object to the current directory.

virtual Int_t	Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const
	Write this object to the current directory.

Additional Inherited Members
Public Types inherited from TObject
enum	{ kIsOnHeap = 0x01000000 , kNotDeleted = 0x02000000 , kZombie = 0x04000000 , kInconsistent = 0x08000000 , kBitMask = 0x00ffffff }

enum	{ kSingleKey = BIT(0) , kOverwrite = BIT(1) , kWriteDelete = BIT(2) }

enum	EDeprecatedStatusBits { kObjInCanvas = BIT(3) }

enum	EStatusBits { kCanDelete = BIT(0) , kMustCleanup = BIT(3) , kIsReferenced = BIT(4) , kHasUUID = BIT(5) , kCannotPick = BIT(6) , kNoContextMenu = BIT(8) , kInvalidObject = BIT(13) }

Static Public Member Functions inherited from TObject
static Longptr_t	GetDtorOnly ()
	Return destructor only flag.

static Bool_t	GetObjectStat ()
	Get status of object stat flag.

static void	SetDtorOnly (void *obj)
	Set destructor only flag.

static void	SetObjectStat (Bool_t stat)
	Turn on/off tracking of objects in the TObjectTable.

Protected Types inherited from RooLinkedList
using	HashTableByLink = std::unordered_map< TObject const , TObject const >

using	HashTableByName = std::unordered_map< std::string, TObject const * >
	Link to last element of list.

Protected Types inherited from TObject
enum	{ kOnlyPrepStep = BIT(3) }

Protected Member Functions inherited from RooLinkedList
RooLinkedListElem *	createElement (TObject obj, RooLinkedListElem elem=0)
	cout << "RooLinkedList::createElem(" << this << ") obj = " << obj << " elem = " << elem << endl ;

void	deleteElement (RooLinkedListElem *)

RooLinkedListElem *	findLink (const TObject *arg) const
	Find the element link containing the given object.

Protected Member Functions inherited from TObject
virtual void	DoError (int level, const char location, const char fmt, va_list va) const
	Interface to ErrorHandler (protected).

void	MakeZombie ()

Protected Attributes inherited from RooLinkedList
RooLinkedListElem *	_first

Int_t	_hashThresh

std::unique_ptr< HashTableByLink >	_htableLink
	Hash table by name.

std::unique_ptr< HashTableByName >	_htableName

RooLinkedListElem *	_last
	Link to first element of list.

TString	_name
	Hash table by link pointer.

Int_t	_size

Bool_t	_useNptr

#include <RooRefCountList.h>

Inheritance diagram for RooRefCountList:

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Constructor & Destructor Documentation

◆ RooRefCountList()

RooRefCountList::RooRefCountList ( )

Default constructor construct lists with initial hash table size of 17.

Definition at line 45 of file RooRefCountList.cxx.

◆ ~RooRefCountList()

virtual RooRefCountList::~RooRefCountList ( )

inlinevirtual

Definition at line 24 of file RooRefCountList.h.

Member Function Documentation

◆ Add() [1/2]

virtual void RooRefCountList::Add ( TObject * arg )

inlinevirtual

Reimplemented from RooLinkedList.

Definition at line 26 of file RooRefCountList.h.

◆ Add() [2/2]

void RooRefCountList::Add	(	TObject *	obj,
		Int_t	count
	)

virtual

Add object to list with given reference count increment List takes ownership of object.

Reimplemented from RooLinkedList.

Definition at line 56 of file RooRefCountList.cxx.

◆ refCount()

Int_t RooRefCountList::refCount ( TObject * obj ) const

Return reference count associated with 'obj'.

Definition at line 111 of file RooRefCountList.cxx.

◆ Remove()

Bool_t RooRefCountList::Remove ( TObject * obj )

virtual

Remove object from list and if reference count reaches zero delete object itself as well.

Reimplemented from RooLinkedList.

Definition at line 80 of file RooRefCountList.cxx.

◆ RemoveAll()

Bool_t RooRefCountList::RemoveAll ( TObject * obj )

virtual

Remove object from list and delete object itself regardless of reference count.

Definition at line 101 of file RooRefCountList.cxx.

Libraries for RooRefCountList:

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The documentation for this class was generated from the following files:

roofit/roofitcore/inc/RooRefCountList.h
roofit/roofitcore/src/RooRefCountList.cxx

Public Member Functions

Additional Inherited Members

Constructor & Destructor Documentation

◆ RooRefCountList()

◆ ~RooRefCountList()

Member Function Documentation

◆ Add() [1/2]

◆ Add() [2/2]

◆ refCount()

◆ Remove()

◆ RemoveAll()