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class TObjectTable: public TObject


This class registers all instances of TObject and its derived
classes in a hash table. The Add() and Remove() members are called
from the TObject ctor and dtor, repectively. Using the Print()
member one can see all currently active objects in the system.
Using the resource (in .rootrc): Root.ObjectStat one can toggle this
feature on or off.
Using the compile option R__NOSTATS one can de-active this feature
for the entire system (for maximum performance in highly time
critical applications).

 The following output has been produced in a ROOT interactive session
 via the command gObjectTable->Print()
   class                     cnt    on heap     size    total size    heap size

   TKey                        4          4       72           288          288
   TClass                     84         84       80          6720         6720
   TDataMember               276        276       24          6624         6624
   TObject                    11         11       12           132          132
   TMethod                  1974       1974       64        126336       126336
   TDataType                  34         34       56          1904         1904
   TList                    2328       2328       36         83808        83808
   TH1F                        1          1      448           448          448
   TText                    2688       2688       56        150528       150528
   TGaxis                      1          0      120           120            0
   TAxis                       6          3       88           528          264
   TBox                       57         57       52          2964         2964
   TLine                     118        118       40          4720         4720
   TWbox                       1          1       56            56           56
   TArrow                      1          1       64            64           64
   TPaveText                  59         59      124          7316         7316
   TPave                       1          1       92            92           92
   TFile                       1          1      136           136          136
   TCanvas                     3          3      444          1332         1332
   TPad                        1          1      312           312          312
   TContextMenu                3          3       48           144          144
   TMethodArg               2166       2166       44         95304        95304
   TPaveLabel                  1          1      120           120          120
   THtml                       1          1       32            32           32
   TROOT                       1          0      208           208            0
   TApplication                1          1       28            28           28
   TFileHandler                1          1       20            20           20
   TColor                    163        163       40          6520         6520
   TStyle                      1          1      364           364          364
   TRealData                 117        117       28          3276         3276
   TBaseClass                 88         88       36          3168         3168
   THashList                   5          5       40           200          200
   THashTable                  5          5       36           180          180
   TGeometry                   1          1       64            64           64
   TLink                       7          7       60           420          420
   TPostScript                 1          1      764           764          764
   TMinuit                     1          1      792           792          792
   TStopwatch                  1          0       56            56            0
   TRootGuiFactory             1          1       28            28           28
   TGX11                       1          1      172           172          172
   TUnixSystem                 1          1      252           252          252
   TSignalHandler              1          1       20            20           20
   TOrdCollection              3          3       40           120          120
   TEnv                        1          1       24            24           24
   TCint                       1          1      208           208          208
   TBenchmark                  1          1       52            52           52
   TClassTable                 1          1       12            12           12
   TObjectTable                1          1       12            12           12

   Total:                  10225      10219     5976        506988       506340

Function Members (Methods)

public:

	TObjectTable(Int_t tableSize = 100)
virtual	~TObjectTable()
void	TObject::AbstractMethod(const char* method) const
void	Add(TObject* obj)
static void	AddObj(TObject* obj)
virtual void	TObject::AppendPad(Option_t* option = "")
virtual void	TObject::Browse(TBrowser* b)
void*	CheckPtrAndWarn(const char* msg, void* vp)
static TClass*	Class()
virtual const char*	TObject::ClassName() const
virtual void	TObject::Clear(Option_t* = "")
virtual TObject*	TObject::Clone(const char* newname = "") const
virtual Int_t	TObject::Compare(const TObject* obj) const
virtual void	TObject::Copy(TObject& object) const
virtual void	Delete(Option_t* opt = "")
virtual Int_t	TObject::DistancetoPrimitive(Int_t px, Int_t py)
virtual void	TObject::Draw(Option_t* option = "")
virtual void	TObject::DrawClass() constMENU
virtual TObject*	TObject::DrawClone(Option_t* option = "") constMENU
virtual void	TObject::Dump() constMENU
virtual void	TObject::Error(const char* method, const char* msgfmt) const
virtual void	TObject::Execute(const char* method, const char* params, Int_t* error = 0)
virtual void	TObject::Execute(TMethod* method, TObjArray* params, Int_t* error = 0)
virtual void	TObject::ExecuteEvent(Int_t event, Int_t px, Int_t py)
virtual void	TObject::Fatal(const char* method, const char* msgfmt) const
virtual TObject*	TObject::FindObject(const char* name) const
virtual TObject*	TObject::FindObject(const TObject* obj) const
virtual Option_t*	TObject::GetDrawOption() const
static Long_t	TObject::GetDtorOnly()
virtual const char*	TObject::GetIconName() const
virtual const char*	TObject::GetName() const
virtual char*	TObject::GetObjectInfo(Int_t px, Int_t py) const
static Bool_t	TObject::GetObjectStat()
virtual Option_t*	TObject::GetOption() const
Int_t	GetSize() const
virtual const char*	TObject::GetTitle() const
virtual UInt_t	TObject::GetUniqueID() const
virtual Bool_t	TObject::HandleTimer(TTimer* timer)
virtual ULong_t	TObject::Hash() const
virtual void	TObject::Info(const char* method, const char* msgfmt) const
virtual Bool_t	TObject::InheritsFrom(const char* classname) const
virtual Bool_t	TObject::InheritsFrom(const TClass* cl) const
virtual void	TObject::Inspect() constMENU
Int_t	Instances() const
void	InstanceStatistics() const
void	TObject::InvertBit(UInt_t f)
virtual TClass*	IsA() const
virtual Bool_t	TObject::IsEqual(const TObject* obj) const
virtual Bool_t	TObject::IsFolder() const
Bool_t	TObject::IsOnHeap() const
virtual Bool_t	TObject::IsSortable() const
Bool_t	TObject::IsZombie() const
virtual void	TObject::ls(Option_t* option = "") const
void	TObject::MayNotUse(const char* method) const
virtual Bool_t	TObject::Notify()
void	TObject::Obsolete(const char* method, const char* asOfVers, const char* removedFromVers) const
static void	TObject::operator delete(void* ptr)
static void	TObject::operator delete(void* ptr, void* vp)
static void	TObject::operator delete[](void* ptr)
static void	TObject::operator delete[](void* ptr, void* vp)
void*	TObject::operator new(size_t sz)
void*	TObject::operator new(size_t sz, void* vp)
void*	TObject::operator new[](size_t sz)
void*	TObject::operator new[](size_t sz, void* vp)
virtual void	TObject::Paint(Option_t* option = "")
virtual void	TObject::Pop()
virtual void	Print(Option_t* option = "") const
Bool_t	PtrIsValid(TObject* op)
virtual Int_t	TObject::Read(const char* name)
virtual void	TObject::RecursiveRemove(TObject* obj)
void	Remove(TObject* obj)
void	RemoveQuietly(TObject* obj)
void	TObject::ResetBit(UInt_t f)
virtual void	TObject::SaveAs(const char* filename = "", Option_t* option = "") constMENU
virtual void	TObject::SavePrimitive(ostream& out, Option_t* option = "")
void	TObject::SetBit(UInt_t f)
void	TObject::SetBit(UInt_t f, Bool_t set)
virtual void	TObject::SetDrawOption(Option_t* option = "")MENU
static void	TObject::SetDtorOnly(void* obj)
static void	TObject::SetObjectStat(Bool_t stat)
virtual void	TObject::SetUniqueID(UInt_t uid)
virtual void	ShowMembers(TMemberInspector&)
void	Statistics()
virtual void	Streamer(TBuffer&)
void	StreamerNVirtual(TBuffer& ClassDef_StreamerNVirtual_b)
virtual void	TObject::SysError(const char* method, const char* msgfmt) const
void	Terminate()
Bool_t	TObject::TestBit(UInt_t f) const
Int_t	TObject::TestBits(UInt_t f) const
void	UpdateInstCount() const
virtual void	TObject::UseCurrentStyle()
virtual void	TObject::Warning(const char* method, const char* msgfmt) const
virtual Int_t	TObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0)
virtual Int_t	TObject::Write(const char* name = 0, Int_t option = 0, Int_t bufsize = 0) const

protected:

virtual void	TObject::DoError(int level, const char* location, const char* fmt, va_list va) const
void	TObject::MakeZombie()

private:

	TObjectTable(const TObjectTable&)
void	Expand(Int_t newsize)
Int_t	FindElement(TObject* obj)
void	FixCollisions(Int_t index)
Bool_t	HighWaterMark()
TObjectTable&	operator=(const TObjectTable&)

Data Members

public:

enum TObject::EStatusBits {	kCanDelete
	kMustCleanup
	kObjInCanvas
	kIsReferenced
	kHasUUID
	kCannotPick
	kNoContextMenu
	kInvalidObject
};
enum TObject::[unnamed] {	kIsOnHeap
	kNotDeleted
	kZombie
	kBitMask
	kSingleKey
	kOverwrite
	kWriteDelete
};

private:

Int_t	fSize
TObject**	fTable
Int_t	fTally

Class Charts

Inheritance Inherited Members Includes Libraries

Function documentation

TObjectTable(Int_t tableSize = 100)

 Create an object table.

~TObjectTable()

 Delete TObjectTable.

void Print(Option_t* option = "") const

 Print the object table.
 If option ="all" prints the list of all objects with the format
 object number, pointer, class name, object name

void Add(TObject* obj)

 Add an object to the object table.

void AddObj(TObject* obj)

 Add an object to the global object table gObjectTable. If the global
 table does not exist create it first. This member function may only
 be used by TObject::TObject. Use Add() to add objects to any other
 TObjectTable object. This is a static function.

void Delete(Option_t* opt = "")

 Delete all objects stored in the TObjectTable.

void Remove(TObject* obj)

 Remove an object from the object table.

void RemoveQuietly(TObject* obj)

 Remove an object from the object table. If op is 0 or not in the table
 don't complain. Currently only used by the TClonesArray dtor. Should not
 be used anywhere else, except in places where "special" allocation and
 de-allocation tricks are performed.

void Terminate()

 Deletes the object table (this static class function calls the dtor).

Int_t FindElement(TObject* obj)

 Find an object in the object table. Returns the slot where to put
 the object. To test if the object is actually already in the table
 use PtrIsValid().

void FixCollisions(Int_t index)

 Rehash the object table in case an object has been removed.

void Expand(Int_t newsize)

 Expand the object table.

void InstanceStatistics() const

 Print the object table.

void UpdateInstCount() const

 Histogram all objects according to their classes.

void * CheckPtrAndWarn(const char* msg, void* vp)

 Issue a warning in case an object still appears in the table
 while it should not.

Bool_t HighWaterMark()

{ return (Bool_t) (fTally >= ((3*fSize)/4)); }

Bool_t PtrIsValid(TObject* op)

{ return fTable[FindElement(op)] != 0; }

TObjectTable(const TObjectTable& )

TObjectTable& operator=(const TObjectTable& )

Int_t GetSize() const

{ return fSize; }

Int_t Instances() const

{ return fTally; }

void Statistics()

{ Print(); }