Detailed Description

Simple tool to track which classes instance count increases over time.

Created by KVClassFactory on Thu Jun 17 14:19:50 2010 Author: John Frankland,,,

Every time the Check() method is called we compare the instance count of every class derived from TObject to the previous Check(). We print a warning message for every class whose instance count has increased.

YOU MUST ACTIVATE ROOT OBJECT TRACKING FOR THIS TO WORK!

In your .rootrc file, add/change this variable:

Root.ObjectStat: 1

Root

const char * Root

Note that, as the instance counts are stored in a TEnv, any time new classes are instanciated, some class instances increase due to the TEnv itself changing.

Typical output in this case is:

Info in <KVClassMonitor::Check>: Checking class instance statistics
Warning in <KVClassMonitor::Check>: TList increase from 4060 --> 4065
Warning in <KVClassMonitor::Check>: TEnvRec increase from 3032 --> 3038
Warning in <KVClassMonitor::Check>: TClass increase from 70 --> 71
Warning in <KVClassMonitor::Check>: TObjArray increase from 90 --> 92

Usage

This is a singleton class: only one instance can exist at a time. A pointer to the current instance can be retrieved with static method KVClassMonitor::GetInstance().

Typical use:

KVClassMonitor* cmon = KVClassMonitor::GetInstance();
 
while( [some treatment loop] ){
 
   [lots of memory-leaking activity]
 
   cmon->Check();-//- print infos on memory usage
}

Definition at line 56 of file KVClassMonitor.h.

#include <KVClassMonitor.h>

Inheritance diagram for KVClassMonitor:

[legend]

Public Member Functions
virtual	~KVClassMonitor ()
	Destructor. More...

void	Check ()

void	CompareToInit ()

std::map< std::string, int > &	GetListOfChanges () const

void	SetInitStatistics ()

Public Member Functions inherited from KVBase
	KVBase ()
	Default constructor. More...

	KVBase (const Char_t name, const Char_t title="")
	Ctor for object with given name and type. More...

	KVBase (const KVBase &)
	copy ctor More...

virtual	~ KVBase ()

virtual void	Clear (Option_t *opt="")
	Clear object properties : name, type/title, number, label. More...

virtual void	Copy (TObject &) const
	Make a copy of this object. More...

const Char_t *	GetLabel () const

UInt_t	GetNumber () const

UInt_t	GetNumberOfObjects () const

virtual TObject *	GetObject () const

virtual const Char_t *	GetType () const

Bool_t	HasLabel () const

virtual Bool_t	IsCalled (const Char_t *name) const

Bool_t	IsLabelled (const Char_t *l) const

virtual Bool_t	IsType (const Char_t *typ) const

virtual void	List ()

KVBase &	operator= (const KVBase &)
	copy assignment operator More...

virtual void	Print (Option_t *option="") const

Double_t	ProtectedGetX (const TF1 *func, Double_t val, int &status, Double_t xmin=0.0, Double_t xmax=0.0) const

void	SetLabel (const Char_t *lab)

virtual void	SetNumber (UInt_t num)

virtual void	SetType (const Char_t *str)

Public Member Functions inherited from TNamed
	TNamed ()

	TNamed (const char name, const char title)

	TNamed (const TNamed &named)

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

virtual	~TNamed ()

TObject *	Clone (const char *newname="") const override

Int_t	Compare (const TObject *obj) const override

virtual void	FillBuffer (char *&buffer)

const char *	GetName () const override

const char *	GetTitle () const override

ULong_t	Hash () const override

TClass *	IsA () const override

Bool_t	IsSortable () const override

void	ls (Option_t *option="") const override

TNamed &	operator= (const TNamed &rhs)

virtual void	SetName (const char *name)

virtual void	SetNameTitle (const char name, const char title)

virtual void	SetTitle (const char *title="")

virtual Int_t	Sizeof () const

void	Streamer (TBuffer &) override

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

Public Member Functions inherited from TObject
	TObject ()

	TObject (const TObject &object)

virtual	~TObject ()

void	AbstractMethod (const char *method) const

virtual void	AppendPad (Option_t *option="")

virtual void	Browse (TBrowser *b)

ULong_t	CheckedHash ()

virtual const char *	ClassName () const

virtual void	Delete (Option_t *option="")

virtual Int_t	DistancetoPrimitive (Int_t px, Int_t py)

virtual void	Draw (Option_t *option="")

virtual void	DrawClass () const

virtual TObject *	DrawClone (Option_t *option="") const

virtual void	Dump () const

virtual void	Error (const char method, const char msgfmt,...) const

virtual void	Execute (const char method, const char params, Int_t *error=nullptr)

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

virtual void	ExecuteEvent (Int_t event, Int_t px, Int_t py)

virtual void	Fatal (const char method, const char msgfmt,...) const

virtual TObject *	FindObject (const char *name) const

virtual TObject *	FindObject (const TObject *obj) const

virtual Option_t *	GetDrawOption () const

virtual const char *	GetIconName () const

virtual char *	GetObjectInfo (Int_t px, Int_t py) const

virtual Option_t *	GetOption () const

virtual UInt_t	GetUniqueID () const

virtual Bool_t	HandleTimer (TTimer *timer)

Bool_t	HasInconsistentHash () const

virtual void	Info (const char method, const char msgfmt,...) const

virtual Bool_t	InheritsFrom (const char *classname) const

virtual Bool_t	InheritsFrom (const TClass *cl) const

virtual void	Inspect () const

void	InvertBit (UInt_t f)

Bool_t	IsDestructed () const

virtual Bool_t	IsEqual (const TObject *obj) const

virtual Bool_t	IsFolder () const

R__ALWAYS_INLINE Bool_t	IsOnHeap () const

R__ALWAYS_INLINE Bool_t	IsZombie () const

void	MayNotUse (const char *method) const

virtual Bool_t	Notify ()

void	Obsolete (const char method, const char asOfVers, const char *removedFromVers) const

void	operator delete (void *ptr)

void	operator delete (void ptr, void vp)

void	operator delete[] (void *ptr)

void	operator delete[] (void ptr, void vp)

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)

virtual void	Paint (Option_t *option="")

virtual void	Pop ()

virtual Int_t	Read (const char *name)

virtual void	RecursiveRemove (TObject *obj)

void	ResetBit (UInt_t f)

virtual void	SaveAs (const char filename="", Option_t option="") const

virtual void	SavePrimitive (std::ostream &out, Option_t *option="")

void	SetBit (UInt_t f)

void	SetBit (UInt_t f, Bool_t set)

virtual void	SetDrawOption (Option_t *option="")

virtual void	SetUniqueID (UInt_t uid)

void	StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b)

virtual void	SysError (const char method, const char msgfmt,...) const

R__ALWAYS_INLINE Bool_t	TestBit (UInt_t f) const

Int_t	TestBits (UInt_t f) const

virtual void	UseCurrentStyle ()

virtual void	Warning (const char method, const char msgfmt,...) const

virtual Int_t	Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0)

virtual Int_t	Write (const char *name=nullptr, Int_t option=0, Int_t bufsize=0) const

Static Public Member Functions
static void	DisableChecking ()
	Disable static DoCheck method. More...

static void	DoCheck (const TString &method, const TString &message)
	Print statistics of global singleton if it exists. More...

static void	EnableChecking ()
	Re-enable static DoCheck method. More...

static KVClassMonitor *	GetInstance ()
	Return pointer to unique instance of class monitor class. More...

Static Public Member Functions inherited from KVBase
static Bool_t	AreEqual (Double_t x, Double_t y, Long64_t maxdif=1)
	Comparison between two 64-bit floating-point values. More...

static void	BackupFileWithDate (const Char_t *path)

static void	CombineFiles (const Char_t file1, const Char_t file2, const Char_t *newfilename, Bool_t keep=kTRUE)

static void	Deprecated (const char method, const char advice)

static Bool_t	FindClassSourceFiles (const Char_t class_name, KVString &imp_file, KVString &dec_file, const Char_t dir_name=".")

static Bool_t	FindExecutable (TString &exec, const Char_t *path="$(PATH)")

static const Char_t *	FindFile (const Char_t *search, TString &wfil)

static const Char_t *	GetBINDIRFilePath (const Char_t *namefile="")

static const Char_t *	GetDATABASEFilePath ()

static const Char_t *	GetDATADIRFilePath (const Char_t *namefile="")

static Bool_t	GetDataSetEnv (const Char_t dataset, const Char_t type, Bool_t defval)

static const Char_t *	GetDataSetEnv (const Char_t dataset, const Char_t type, const Char_t *defval)

static Double_t	GetDataSetEnv (const Char_t dataset, const Char_t type, Double_t defval)

static const Char_t *	GetETCDIRFilePath (const Char_t *namefile="")

static const Char_t *	GetExampleFilePath (const Char_t library, const Char_t namefile)
	Return full path to example file for given library (="KVMultiDet", "BackTrack", etc.) More...

static const Char_t *	GetINCDIRFilePath (const Char_t *namefile="")

static const Char_t *	GetKVBuildDate ()
	Returns KaliVeda build date. More...

static const Char_t *	GetKVBuildDir ()
	Returns top-level directory used for build. More...

static const Char_t *	GetKVBuildTime ()
	Returns KaliVeda build time. More...

static const Char_t *	GetKVBuildType ()
	Returns KaliVeda build type (cmake build: Release, Debug, RelWithDebInfo, ...) More...

static const Char_t *	GetKVBuildUser ()
	Returns username of person who performed build. More...

static const Char_t *	GetKVSourceDir ()
	Returns top-level directory of source tree used for build. More...

static const Char_t *	GetKVVersion ()
	Returns KaliVeda version string. More...

static const Char_t *	GetLIBDIRFilePath (const Char_t *namefile="")

static const Char_t *	GetListOfPlugins (const Char_t *base)

static const Char_t *	GetListOfPluginURIs (const Char_t *base)

static const Char_t *	GetPluginURI (const Char_t base, const Char_t plugin)

static void	GetTempFileName (TString &base)

static const Char_t *	GetTEMPLATEDIRFilePath (const Char_t *namefile="")

static const Char_t *	GetWORKDIRFilePath (const Char_t *namefile="")

static const Char_t *	gitBranch ()
	Returns git branch of sources. More...

static const Char_t *	gitCommit ()
	Returns last git commit of sources. More...

static void	InitEnvironment ()

static bool	is_gnuinstall ()

static Bool_t	IsThisAPlugin (const TString &uri, TString &base)

static TPluginHandler *	LoadPlugin (const Char_t base, const Char_t uri="0")

static Bool_t	OpenContextMenu (const char method, TObject obj, const char *alt_method_name="")

static void	OpenTempFile (TString &base, std::ofstream &fp)

static void	PrintSplashScreen ()
	Prints welcome message and infos on version etc. More...

static Bool_t	SearchAndOpenKVFile (const Char_t name, KVSQLite::database &dbfile, const Char_t kvsubdir="")

static Bool_t	SearchAndOpenKVFile (const Char_t name, std::ifstream &file, const Char_t kvsubdir="", KVLockfile *locks=0)

static Bool_t	SearchAndOpenKVFile (const Char_t name, std::ofstream &file, const Char_t kvsubdir="", KVLockfile *locks=0)

static Bool_t	SearchKVFile (const Char_t name, TString &fullpath, const Char_t kvsubdir="")

static const Char_t *	WorkingDirectory ()

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 ()

static Bool_t	GetObjectStat ()

static void	SetDtorOnly (void *obj)

static void	SetObjectStat (Bool_t stat)

Private Member Functions
	KVClassMonitor ()

Private Attributes
std::map< std::string, int >	fChanges
	list of classes whose number changed in last Check() More...

TEnv	fClassStats
	store class instance statistics More...

TEnv	fClassStatsInit
	intitial class instance statistics More...

Static Private Attributes
static Bool_t	fDisableCheck = kFALSE
	disable static DoCheck() method More...

static KVClassMonitor *	fgClassMonitor = nullptr
	singleton More...

Additional Inherited Members
Public Types inherited from KVBase
enum	EKaliVedaBits { kIsKaliVedaObject = BIT(23) }

Public Types inherited from TObject
enum	EDeprecatedStatusBits

enum	EStatusBits

Public Attributes inherited from TObject
	kBitMask

	kCanDelete

	kCannotPick

	kHasUUID

	kInconsistent

	kInvalidObject

	kIsOnHeap

	kIsReferenced

	kMustCleanup

	kNoContextMenu

	kNotDeleted

	kObjInCanvas

	kOverwrite

	kSingleKey

	kWriteDelete

	kZombie

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

void	MakeZombie ()

Protected Attributes inherited from TNamed
TString	fName

TString	fTitle

Protected Attributes inherited from TObject
	kOnlyPrepStep

Constructor & Destructor Documentation

◆ KVClassMonitor()

KVClassMonitor::KVClassMonitor ( )

private

Default constructor fill fClassStats with all current instance counts Store current class instance statistics as 'initial' values used for global comparison by CompareToInit()

Definition at line 22 of file KVClassMonitor.cpp.

◆ ~KVClassMonitor()

KVClassMonitor::~KVClassMonitor ( )

virtual

Destructor.

Definition at line 90 of file KVClassMonitor.cpp.

Member Function Documentation

◆ Check()

void KVClassMonitor::Check ( )

update class instance statistics print warning for every class whose number has increased

Definition at line 102 of file KVClassMonitor.cpp.

◆ CompareToInit()

void KVClassMonitor::CompareToInit ( )

compare class instance statistics to initial values print warning for every class whose number has increased

Definition at line 129 of file KVClassMonitor.cpp.

◆ DisableChecking()

static void KVClassMonitor::DisableChecking ( )

inlinestatic

Disable static DoCheck method.

Definition at line 85 of file KVClassMonitor.h.

◆ DoCheck()

static void KVClassMonitor::DoCheck	(	const TString &	method,
		const TString &	message
	)

inlinestatic

Print statistics of global singleton if it exists.

Definition at line 76 of file KVClassMonitor.h.

◆ EnableChecking()

static void KVClassMonitor::EnableChecking ( )

inlinestatic

Re-enable static DoCheck method.

Definition at line 90 of file KVClassMonitor.h.

◆ GetInstance()

KVClassMonitor * KVClassMonitor::GetInstance ( )

static

Return pointer to unique instance of class monitor class.

Definition at line 78 of file KVClassMonitor.cpp.

◆ GetListOfChanges()

std::map< std::string, int > & KVClassMonitor::GetListOfChanges ( ) const

Return list of classes whose count changed in last call to Check() Each parameter (classname) has a value corresponding to the change (+ or -)

Definition at line 65 of file KVClassMonitor.cpp.

◆ SetInitStatistics()

void KVClassMonitor::SetInitStatistics ( )

Store current class instance statistics as 'initial' values used for global comparison by CompareToInit()

Definition at line 45 of file KVClassMonitor.cpp.

Member Data Documentation

◆ fChanges

std::map<std::string, int> KVClassMonitor::fChanges

mutableprivate

list of classes whose number changed in last Check()

Definition at line 62 of file KVClassMonitor.h.

◆ fClassStats

TEnv KVClassMonitor::fClassStats

private

store class instance statistics

Definition at line 59 of file KVClassMonitor.h.

◆ fClassStatsInit

TEnv KVClassMonitor::fClassStatsInit

private

intitial class instance statistics

Definition at line 60 of file KVClassMonitor.h.

◆ fDisableCheck

Bool_t KVClassMonitor::fDisableCheck = kFALSE

staticprivate

disable static DoCheck() method

Definition at line 61 of file KVClassMonitor.h.

◆ fgClassMonitor

KVClassMonitor * KVClassMonitor::fgClassMonitor = nullptr

staticprivate

singleton

Definition at line 58 of file KVClassMonitor.h.

Detailed Description

Usage

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Static Private Attributes

Additional Inherited Members

Constructor & Destructor Documentation

◆ KVClassMonitor()

◆ ~KVClassMonitor()

Member Function Documentation

◆ Check()

◆ CompareToInit()

◆ DisableChecking()

◆ DoCheck()

◆ EnableChecking()

◆ GetInstance()

◆ GetListOfChanges()

◆ SetInitStatistics()

Member Data Documentation

◆ fChanges

◆ fClassStats

◆ fClassStatsInit

◆ fDisableCheck

◆ fgClassMonitor