RooHashTable implements a hash table for TObjects.

The hashing can be done on the object addresses, object names, or using the objects internal hash method. This is a utility class for RooLinkedList that uses RooHashTable to speed up direct access to large collections.

Definition at line 28 of file RooHashTable.h.

Public Types
enum	HashMethod { Pointer =0 , Name =1 , Intrinsic =2 }

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) }

Public Member Functions
	RooHashTable (const RooHashTable &other)
	Copy constructor.

	RooHashTable (Int_t initSize=17, HashMethod hashMethod=Name)
	Construct a hash table with given capacity and hash method.

virtual	~RooHashTable ()
	Destructor.

void	add (TObject arg, TObject hashArg=0)
	Add given object to table.

Double_t	avgCollisions () const
	Calculate the average number of collisions (table slots with >1 filled entry)

Int_t	entries () const

TObject *	find (const char *name) const
	Return the object with given name from the table.

TObject *	find (const TObject *arg) const
	Return object with the given pointer from the table.

RooAbsArg *	findArg (const RooAbsArg *arg) const

RooLinkedListElem *	findLinkTo (const TObject *arg) const
	Return RooLinkedList element link to object 'hashArg'.

RooSetPair *	findSetPair (const RooArgSet set1, const RooArgSet set2) const
	Return RooSetPair with given pointers in table.

Bool_t	remove (TObject arg, TObject hashArg=0)
	Remove given object from table.

Bool_t	replace (const TObject oldArg, const TObject newArg, const TObject *oldHashArg=0)
	Replace oldArg with newArg in the table.

Int_t	size () const

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 void	Clear (Option_t *="")

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

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

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

virtual void	Delete (Option_t *option="")
	Delete this object.

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 TObject *	FindObject (const char *name) const
	Must be redefined in derived classes.

virtual TObject *	FindObject (const TObject *obj) const
	Must be redefined in derived classes.

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 const char *	GetName () const
	Returns 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.

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

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)

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 void	Print (Option_t *option="") const
	This method must be overridden when a class wants to print itself.

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

virtual void	RecursiveRemove (TObject *obj)
	Recursively remove this object from a list.

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.

Protected Member Functions
ULong_t	hash (const TObject *arg) const

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
RooLinkedList **	_arr

Int_t	_entries

HashMethod	_hashMethod

Int_t	_size

Int_t	_usedSlots

Additional Inherited Members
Static Public Member Functions inherited from TObject
static Long_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 TObject
enum	{ kOnlyPrepStep = BIT(3) }

#include <RooHashTable.h>

Inheritance diagram for RooHashTable:

[legend]

Member Enumeration Documentation

◆ HashMethod

enum RooHashTable::HashMethod

Enumerator
Pointer
Name
Intrinsic

Definition at line 31 of file RooHashTable.h.

Constructor & Destructor Documentation

◆ RooHashTable() [1/2]

RooHashTable::RooHashTable	(	Int_t	initSize = `17`,
		HashMethod	hashMethod = `Name`
	)

Construct a hash table with given capacity and hash method.

Definition at line 45 of file RooHashTable.cxx.

◆ RooHashTable() [2/2]

RooHashTable::RooHashTable ( const RooHashTable & other )

Copy constructor.

Definition at line 64 of file RooHashTable.cxx.

◆ ~RooHashTable()

RooHashTable::~RooHashTable ( )

virtual

Destructor.

Definition at line 283 of file RooHashTable.cxx.

Member Function Documentation

◆ add()

void RooHashTable::add	(	TObject *	arg,
		TObject *	hashArg = `0`
	)

Add given object to table.

If hashArg is given, hash will be calculation on that rather than on 'arg'

Definition at line 87 of file RooHashTable.cxx.

◆ avgCollisions()

Double_t RooHashTable::avgCollisions ( ) const

Calculate the average number of collisions (table slots with >1 filled entry)

Definition at line 149 of file RooHashTable.cxx.

◆ entries()

Int_t RooHashTable::entries ( ) const

inline

Definition at line 49 of file RooHashTable.h.

◆ find() [1/2]

TObject * RooHashTable::find ( const char * name ) const

Return the object with given name from the table.

Definition at line 199 of file RooHashTable.cxx.

◆ find() [2/2]

TObject * RooHashTable::find ( const TObject * arg ) const

Return object with the given pointer from the table.

Definition at line 226 of file RooHashTable.cxx.

◆ findArg()

RooAbsArg * RooHashTable::findArg ( const RooAbsArg * arg ) const

Definition at line 212 of file RooHashTable.cxx.

◆ findLinkTo()

RooLinkedListElem * RooHashTable::findLinkTo ( const TObject * arg ) const

Return RooLinkedList element link to object 'hashArg'.

Definition at line 237 of file RooHashTable.cxx.

◆ findSetPair()

RooSetPair * RooHashTable::findSetPair	(	const RooArgSet *	set1,
		const RooArgSet *	set2
	)		const

Return RooSetPair with given pointers in table.

Definition at line 259 of file RooHashTable.cxx.

◆ hash()

ULong_t RooHashTable::hash ( const TObject * arg ) const

inlineprotected

Definition at line 53 of file RooHashTable.h.

◆ remove()

Bool_t RooHashTable::remove	(	TObject *	arg,
		TObject *	hashArg = `0`
	)

Remove given object from table.

If hashArg is given, hash will be calculation on that rather than on 'arg'

Definition at line 105 of file RooHashTable.cxx.

◆ replace()

Bool_t RooHashTable::replace	(	const TObject *	oldArg,
		const TObject *	newArg,
		const TObject *	oldHashArg = `0`
	)

Replace oldArg with newArg in the table.

If oldHashArg is given, use that to calculate the hash associated with oldArg

Definition at line 176 of file RooHashTable.cxx.

◆ size()

Int_t RooHashTable::size ( ) const

inline

Definition at line 48 of file RooHashTable.h.

Member Data Documentation

◆ _arr

RooLinkedList** RooHashTable::_arr

protected

Definition at line 67 of file RooHashTable.h.

◆ _entries

Int_t RooHashTable::_entries

protected

Definition at line 65 of file RooHashTable.h.

◆ _hashMethod

HashMethod RooHashTable::_hashMethod

protected

Definition at line 63 of file RooHashTable.h.

◆ _size

Int_t RooHashTable::_size

protected

Definition at line 66 of file RooHashTable.h.

◆ _usedSlots

Int_t RooHashTable::_usedSlots

protected

Definition at line 64 of file RooHashTable.h.

Libraries for RooHashTable:

[legend]

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

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

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Member Enumeration Documentation

◆ HashMethod

Constructor & Destructor Documentation

◆ RooHashTable() [1/2]

◆ RooHashTable() [2/2]

◆ ~RooHashTable()

Member Function Documentation

◆ add()

◆ avgCollisions()

◆ entries()

◆ find() [1/2]

◆ find() [2/2]

◆ findArg()

◆ findLinkTo()

◆ findSetPair()

◆ hash()

◆ remove()

◆ replace()

◆ size()

Member Data Documentation

◆ _arr

◆ _entries

◆ _hashMethod

◆ _size

◆ _usedSlots