This class is a specialized TProcessID managing the list of UUIDs.

In addition to TProcessID, this object has the following members:

fUUIDs : a THashList of TUUIDs in string format (using a TObjString)
fActive : a TBits table with one bit per TUUID in the table

When a new TUUID is entered into the list fUUIDs, it is assigned the first free slot in the list of bits and the TUUID UUIDNumber is set to this slot number.

When a TUUID is removed from the list, the corresponding bit is reset in fActive.

The object corresponding to a TUUID at slot I can be found via fObjects->At(I).

One can use two mechanisms to find the object corresponding to a TUUID:

the input is the TUUID.AsString. One can find the corresponding TObjString object objs in fUUIDs via THashList::FindObject(name). The slot number is then objs->GetUniqueID().
The input is the UUIDNumber. The slot number is UIUIDNumber

When a TRef points to an object having a TUUID, both the TRef and the referenced object have their bit kHasUUID set. In this case, the pointer TProcessID *fPID in TRef points to the unique object TProcessUUID. The TRef uniqueID is directly the UUIDNumber=slot number.

Definition at line 32 of file TProcessUUID.h.

Public Member Functions
	TProcessUUID ()
	Default constructor.

virtual	~TProcessUUID ()
	Destructor.

UInt_t	AddUUID (const char *uuids)
	Add uuid with name uuids to the table of UUIDs return entry number in the table.

UInt_t	AddUUID (TUUID &uuid, TObject *obj)
	Add uuid to the table of UUIDs The TObject *obj has its uniqueID set to the UUID number return entry number in the table.

TObjString *	FindUUID (UInt_t number) const
	Find the TObjString by slot number.

TBits *	GetActive () const

TList *	GetUUIDs () const

TClass *	IsA () const override

void	RemoveUUID (UInt_t number)
	Remove entry number in the list of uuids.

void	Streamer (TBuffer &) override
	Stream an object of class TObject.

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Public Member Functions inherited from TProcessID
	TProcessID ()
	Default constructor.

virtual	~TProcessID ()
	Destructor.

void	CheckInit ()
	Initialize fObjects.

void	Clear (Option_t *option="") override
	delete the TObjArray pointing to referenced objects this function is called by TFile::Close("R")

Int_t	DecrementCount ()
	The reference fCount is used to delete the TProcessID in the TFile destructor when fCount = 0.

Int_t	GetCount () const

TObjArray *	GetObjects () const

TObject *	GetObjectWithID (UInt_t uid)
	returns the TObject with unique identifier uid in the table of objects

Int_t	IncrementCount ()
	Increase the reference count to this object.

void	PutObjectWithID (TObject *obj, UInt_t uid=0)
	stores the object at the uid th slot in the table of objects The object uniqued is set as well as its kMustCleanup bit

void	RecursiveRemove (TObject *obj) override
	called by the object destructor remove reference to obj from the current table if it is referenced

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Public Member Functions inherited from TNamed
	TNamed ()

	TNamed (const char name, const char title)

	TNamed (const TNamed &named)
	TNamed copy ctor.

	TNamed (const TString &name, const TString &title)

virtual	~TNamed ()
	TNamed destructor.

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

Int_t	Compare (const TObject *obj) const override
	Compare two TNamed objects.

void	Copy (TObject &named) const override
	Copy this to obj.

virtual void	FillBuffer (char *&buffer)
	Encode TNamed into output buffer.

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

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

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

Bool_t	IsSortable () const override

void	ls (Option_t *option="") const override
	List TNamed name and title.

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

void	Print (Option_t *option="") const override
	Print TNamed name and title.

virtual void	SetName (const char *name)
	Set the name of the TNamed.

virtual void	SetNameTitle (const char name, const char title)
	Set all the TNamed parameters (name and title).

virtual void	SetTitle (const char *title="")
	Set the title of the TNamed.

virtual Int_t	Sizeof () const
	Return size of the TNamed part of the TObject.

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	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 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 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 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

R__ALWAYS_INLINE Bool_t	IsZombie () const

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 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.

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 TProcessID
static TProcessID *	AddProcessID ()
	Static function to add a new TProcessID to the list of PIDs.

static UInt_t	AssignID (TObject *obj)
	static function returning the ID assigned to obj If the object is not yet referenced, its kIsReferenced bit is set and its fUniqueID set to the current number of referenced objects so far.

static TClass *	Class ()

static const char *	Class_Name ()

static constexpr Version_t	Class_Version ()

static void	Cleanup ()
	static function (called by TROOT destructor) to delete all TProcessIDs

static const char *	DeclFileName ()

static UInt_t	GetNProcessIDs ()
	Return the (static) number of process IDs.

static UInt_t	GetObjectCount ()
	Return the current referenced object count fgNumber is incremented every time a new object is referenced.

static TProcessID *	GetPID ()
	static: returns pointer to current TProcessID

static TObjArray *	GetPIDs ()
	static: returns array of TProcessIDs

static TProcessID *	GetProcessID (UShort_t pid)
	static function returning a pointer to TProcessID number pid in fgPIDs

static TProcessID *	GetProcessWithUID (const TObject *obj)
	static function returning a pointer to TProcessID with its pid encoded in the highest byte of obj->GetUniqueID()

static TProcessID *	GetProcessWithUID (UInt_t uid, const void *obj)
	static function returning a pointer to TProcessID with its pid encoded in the highest byte of uid

static TProcessID *	GetSessionProcessID ()
	static function returning the pointer to the session TProcessID

static Bool_t	IsValid (TProcessID *pid)
	static function. return kTRUE if pid is a valid TProcessID

static void	SetObjectCount (UInt_t number)
	static function to set the current referenced object count fgNumber is incremented every time a new object is referenced

Static Public Member Functions inherited from TNamed
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.

Protected Attributes
TBits *	fActive

TList *	fUUIDs

Protected Attributes inherited from TProcessID
std::atomic_int	fCount

std::atomic_flag	fLock
	Array pointing to the referenced objects.

ROOT::Internal::TAtomicPointer< TObjArray * >	fObjects
	Reference count to this object (from TFile)

Protected Attributes inherited from TNamed
TString	fName

TString	fTitle

Private Member Functions
	TProcessUUID (const TProcessID &)=delete

TProcessUUID &	operator= (const TProcessUUID &)=delete

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 ()

Static Protected Attributes inherited from TProcessID
static std::atomic_uint	fgNumber

static TExMap *	fgObjPIDs = nullptr

static TProcessID *	fgPID = nullptr
	Spin lock for initialization of fObjects.

static TObjArray *	fgPIDs = nullptr

#include <TProcessUUID.h>

Inheritance diagram for TProcessUUID:

[legend]

Constructor & Destructor Documentation

◆ TProcessUUID() [1/2]

TProcessUUID::TProcessUUID ( const TProcessID & )

privatedelete

◆ TProcessUUID() [2/2]

TProcessUUID::TProcessUUID ( )

Default constructor.

Definition at line 56 of file TProcessUUID.cxx.

◆ ~TProcessUUID()

TProcessUUID::~TProcessUUID ( )

virtual

Destructor.

Definition at line 66 of file TProcessUUID.cxx.

Member Function Documentation

◆ AddUUID() [1/2]

UInt_t TProcessUUID::AddUUID ( const char * uuids )

Add uuid with name uuids to the table of UUIDs return entry number in the table.

Definition at line 110 of file TProcessUUID.cxx.

◆ AddUUID() [2/2]

UInt_t TProcessUUID::AddUUID	(	TUUID &	uuid,
		TObject *	obj
	)

Add uuid to the table of UUIDs The TObject *obj has its uniqueID set to the UUID number return entry number in the table.

Definition at line 78 of file TProcessUUID.cxx.

◆ Class()

static TClass * TProcessUUID::Class ( )

static

Returns: TClass describing this class

◆ Class_Name()

static const char * TProcessUUID::Class_Name ( )

static

Returns: Name of this class

◆ Class_Version()

static constexpr Version_t TProcessUUID::Class_Version ( )

inlinestaticconstexpr

Returns: Version of this class

Definition at line 53 of file TProcessUUID.h.

◆ DeclFileName()

static const char * TProcessUUID::DeclFileName ( )

inlinestatic

Returns: Name of the file containing the class declaration

Definition at line 53 of file TProcessUUID.h.

◆ FindUUID()

TObjString * TProcessUUID::FindUUID ( UInt_t number ) const

Find the TObjString by slot number.

Definition at line 128 of file TProcessUUID.cxx.

◆ GetActive()

TBits * TProcessUUID::GetActive ( ) const

inline

Definition at line 49 of file TProcessUUID.h.

◆ GetUUIDs()

TList * TProcessUUID::GetUUIDs ( ) const

inline

Definition at line 50 of file TProcessUUID.h.

◆ IsA()

TClass * TProcessUUID::IsA ( ) const

inlineoverridevirtual

Returns: TClass describing current object

Reimplemented from TProcessID.

Definition at line 53 of file TProcessUUID.h.

◆ operator=()

TProcessUUID & TProcessUUID::operator= ( const TProcessUUID & )

privatedelete

◆ RemoveUUID()

void TProcessUUID::RemoveUUID ( UInt_t number )

Remove entry number in the list of uuids.

Definition at line 142 of file TProcessUUID.cxx.

◆ Streamer()

void TProcessUUID::Streamer ( TBuffer & R__b )

overridevirtual

Stream an object of class TObject.

Reimplemented from TProcessID.

◆ StreamerNVirtual()

void TProcessUUID::StreamerNVirtual ( TBuffer & ClassDef_StreamerNVirtual_b )

inline

Definition at line 53 of file TProcessUUID.h.

Member Data Documentation

◆ fActive

TBits* TProcessUUID::fActive

protected

Definition at line 40 of file TProcessUUID.h.

◆ fUUIDs

TList* TProcessUUID::fUUIDs

protected

Definition at line 39 of file TProcessUUID.h.

core/base/inc/TProcessUUID.h

core/base/src/TProcessUUID.cxx

Public Member Functions

Static Public Member Functions

Protected Attributes

Private Member Functions

Additional Inherited Members

Constructor & Destructor Documentation

◆ TProcessUUID() [1/2]

◆ TProcessUUID() [2/2]

◆ ~TProcessUUID()

Member Function Documentation

◆ AddUUID() [1/2]

◆ AddUUID() [2/2]

◆ Class()

◆ Class_Name()

◆ Class_Version()

◆ DeclFileName()

◆ FindUUID()

◆ GetActive()

◆ GetUUIDs()

◆ IsA()

◆ operator=()

◆ RemoveUUID()

◆ Streamer()

◆ StreamerNVirtual()

Member Data Documentation

◆ fActive

◆ fUUIDs