This class stores a (key,value) pair using an external hash.

The (key,value) are Long64_t's and therefore can contain object pointers or any longs. The map uses an open addressing hashing method (linear probing).

Definition at line 33 of file TExMap.h.

Classes
struct	Assoc_t

Public Member Functions
	TExMap (const TExMap &map)
	Copy constructor.

	TExMap (Int_t mapSize=100)
	Create a TExMap.

	~TExMap ()
	Delete TExMap.

void	Add (Long64_t key, Long64_t value)

void	Add (ULong64_t hash, Long64_t key, Long64_t value)
	Add an (key,value) pair to the table. The key should be unique.

void	AddAt (UInt_t slot, ULong64_t hash, Long64_t key, Long64_t value)
	Add an (key,value) pair to the table.

Int_t	Capacity () const

void	Delete (Option_t *opt="") override
	Delete all entries stored in the TExMap.

void	Expand (Int_t newsize)
	Expand the TExMap.

Int_t	GetSize () const

Long64_t	GetValue (Long64_t key)

Long64_t	GetValue (ULong64_t hash, Long64_t key)
	Return the value belonging to specified key and hash value.

Long64_t	GetValue (ULong64_t hash, Long64_t key, UInt_t &slot)
	Return the value belonging to specified key and hash value.

TClass *	IsA () const override

Long64_t &	operator() (Long64_t key)

Long64_t &	operator() (ULong64_t hash, Long64_t key)
	Return a reference to the value belonging to the key with the specified hash value.

TExMap &	operator= (const TExMap &)
	Assignment operator.

void	Remove (Long64_t key)

void	Remove (ULong64_t hash, Long64_t key)
	Remove entry with specified key from the TExMap.

void	Streamer (TBuffer &) override
	Stream all objects in the collection to or from the I/O buffer.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

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 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 with: `gROOT->SetSelectedPad(c1)`.

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=nullptr)
	Execute method on this object with the given parameter string, e.g.

virtual void	Execute (TMethod method, TObjArray params, Int_t *error=nullptr)
	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)

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 (the base implementation is no-op).

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, void vp)
	Only called by placement new when throwing an exception.

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

void	operator delete[] (void ptr, void vp)
	Only called by placement new[] when throwing an exception.

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.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

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=nullptr, Int_t option=0, Int_t bufsize=0)
	Write this object to the current directory.

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

Static Public Member Functions
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

Static Public Member Functions inherited from TObject
static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static const char *	DeclFileName ()

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.

Private Member Functions
Int_t	FindElement (ULong64_t hash, Long64_t key)
	Find an entry with specified hash and key in the TExMap.

void	FixCollisions (Int_t index)
	Rehash the map in case an entry has been removed.

Bool_t	HighWaterMark ()

Private Attributes
Int_t	fSize

Assoc_t *	fTable

Int_t	fTally

Friends
class	TExMapIter

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

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

enum	EDeprecatedStatusBits { kObjInCanvas = (1ULL << ( 3 )) }

enum	EStatusBits { kCanDelete = (1ULL << ( 0 )) , kMustCleanup = (1ULL << ( 3 )) , kIsReferenced = (1ULL << ( 4 )) , kHasUUID = (1ULL << ( 5 )) , kCannotPick = (1ULL << ( 6 )) , kNoContextMenu = (1ULL << ( 8 )) , kInvalidObject = (1ULL << ( 13 )) }

Protected Types inherited from TObject
enum	{ kOnlyPrepStep = (1ULL << ( 3 )) }

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 ()

#include <TExMap.h>

Inheritance diagram for TExMap:

[legend]

Constructor & Destructor Documentation

◆ TExMap() [1/2]

TExMap::TExMap ( Int_t mapSize = 100 )

Create a TExMap.

Definition at line 32 of file TExMap.cxx.

◆ TExMap() [2/2]

TExMap::TExMap ( const TExMap & map )

Copy constructor.

Definition at line 53 of file TExMap.cxx.

◆ ~TExMap()

TExMap::~TExMap ( )

Delete TExMap.

Definition at line 80 of file TExMap.cxx.

Member Function Documentation

◆ Add() [1/2]

void TExMap::Add	(	Long64_t	key,
		Long64_t	value
	)

inline

Definition at line 66 of file TExMap.h.

◆ Add() [2/2]

void TExMap::Add	(	ULong64_t	hash,
		Long64_t	key,
		Long64_t	value
	)

Add an (key,value) pair to the table. The key should be unique.

Definition at line 88 of file TExMap.cxx.

◆ AddAt()

void TExMap::AddAt	(	UInt_t	slot,
		ULong64_t	hash,
		Long64_t	key,
		Long64_t	value
	)

Add an (key,value) pair to the table.

The key should be unique. If the 'slot' is open, use it to store the value, otherwise revert to Add(hash,key,value) This is usually used in conjunction with GetValue with 3 parameters:

if ((idx = (ULong64_t)fMap->GetValue(hash, key, slot)) != 0) {
   ...
} else {
   fMap->AddAt(slot,hash,key,value);
}

Definition at line 117 of file TExMap.cxx.

◆ Capacity()

Int_t TExMap::Capacity ( ) const

inline

Definition at line 69 of file TExMap.h.

◆ Class()

static TClass * TExMap::Class ( )

static

Returns: TClass describing this class

◆ Class_Name()

static const char * TExMap::Class_Name ( )

static

Returns: Name of this class

◆ Class_Version()

static constexpr Version_t TExMap::Class_Version ( )

inlinestaticconstexpr

Returns: Version of this class

Definition at line 81 of file TExMap.h.

◆ DeclFileName()

static const char * TExMap::DeclFileName ( )

inlinestatic

Returns: Name of the file containing the class declaration

Definition at line 81 of file TExMap.h.

◆ Delete()

void TExMap::Delete ( Option_t * opt = "" )

overridevirtual

Delete all entries stored in the TExMap.

Reimplemented from TObject.

Definition at line 164 of file TExMap.cxx.

◆ Expand()

void TExMap::Expand ( Int_t newsize )

Expand the TExMap.

Definition at line 279 of file TExMap.cxx.

◆ FindElement()

Int_t TExMap::FindElement	(	ULong64_t	hash,
		Long64_t	key
	)

private

Find an entry with specified hash and key in the TExMap.

Returns the slot of the key or the next empty slot.

Definition at line 237 of file TExMap.cxx.

◆ FixCollisions()

void TExMap::FixCollisions ( Int_t index )

private

Rehash the map in case an entry has been removed.

Definition at line 257 of file TExMap.cxx.

◆ GetSize()

Int_t TExMap::GetSize ( ) const

inline

Definition at line 71 of file TExMap.h.

◆ GetValue() [1/3]

Long64_t TExMap::GetValue ( Long64_t key )

inline

Definition at line 73 of file TExMap.h.

◆ GetValue() [2/3]

Long64_t TExMap::GetValue	(	ULong64_t	hash,
		Long64_t	key
	)

Return the value belonging to specified key and hash value.

If key not found return 0.

Definition at line 174 of file TExMap.cxx.

◆ GetValue() [3/3]

Long64_t TExMap::GetValue	(	ULong64_t	hash,
		Long64_t	key,
		UInt_t &	slot
	)

Return the value belonging to specified key and hash value.

If key not found return 0. In 'slot', return the index of the slot used or the first empty slot. (to be used with AddAt).

Definition at line 197 of file TExMap.cxx.

◆ HighWaterMark()

Bool_t TExMap::HighWaterMark ( )

inlineprivate

Definition at line 54 of file TExMap.h.

◆ IsA()

TClass * TExMap::IsA ( ) const

inlineoverridevirtual

Returns: TClass describing current object

Reimplemented from TObject.

Definition at line 81 of file TExMap.h.

◆ operator()() [1/2]

Long64_t & TExMap::operator() ( Long64_t key )

inline

Definition at line 79 of file TExMap.h.

◆ operator()() [2/2]

Long64_t & TExMap::operator()	(	ULong64_t	hash,
		Long64_t	key
	)

Return a reference to the value belonging to the key with the specified hash value.

If the key does not exist it will be added. NOTE: the reference will be invalidated an Expand() triggered by an Add() or another operator() call.

Definition at line 139 of file TExMap.cxx.

◆ operator=()

TExMap & TExMap::operator= ( const TExMap & map )

Assignment operator.

Definition at line 64 of file TExMap.cxx.

◆ Remove() [1/2]

void TExMap::Remove ( Long64_t key )

inline

Definition at line 76 of file TExMap.h.

◆ Remove() [2/2]

void TExMap::Remove	(	ULong64_t	hash,
		Long64_t	key
	)

Remove entry with specified key from the TExMap.

Definition at line 217 of file TExMap.cxx.

◆ Streamer()

void TExMap::Streamer ( TBuffer & b )

overridevirtual

Stream all objects in the collection to or from the I/O buffer.

Reimplemented from TObject.

Definition at line 306 of file TExMap.cxx.

◆ StreamerNVirtual()

void TExMap::StreamerNVirtual ( TBuffer & ClassDef_StreamerNVirtual_b )

inline

Definition at line 81 of file TExMap.h.

Friends And Related Symbol Documentation

◆ TExMapIter

friend class TExMapIter

friend

Definition at line 35 of file TExMap.h.

Member Data Documentation

◆ fSize

Int_t TExMap::fSize

private

Definition at line 51 of file TExMap.h.

◆ fTable

Assoc_t* TExMap::fTable

private

Definition at line 50 of file TExMap.h.

◆ fTally

Int_t TExMap::fTally

private

Definition at line 52 of file TExMap.h.

Libraries for TExMap:

[legend]

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

core/cont/inc/TExMap.h
core/cont/src/TExMap.cxx

Classes

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Friends

Additional Inherited Members

Constructor & Destructor Documentation

◆ TExMap() [1/2]

◆ TExMap() [2/2]

◆ ~TExMap()

Member Function Documentation

◆ Add() [1/2]

◆ Add() [2/2]

◆ AddAt()

◆ Capacity()

◆ Class()

◆ Class_Name()

◆ Class_Version()

◆ DeclFileName()

◆ Delete()

◆ Expand()

◆ FindElement()

◆ FixCollisions()

◆ GetSize()

◆ GetValue() [1/3]

◆ GetValue() [2/3]

◆ GetValue() [3/3]

◆ HighWaterMark()

◆ IsA()

◆ operator()() [1/2]

◆ operator()() [2/2]

◆ operator=()

◆ Remove() [1/2]

◆ Remove() [2/2]

◆ Streamer()

◆ StreamerNVirtual()

Friends And Related Symbol Documentation

◆ TExMapIter

Member Data Documentation

◆ fSize

◆ fTable

◆ fTally