Describe Streamer information for one class version.

Describes a persistent version of a class.

A ROOT file contains the list of TStreamerInfo objects for all the class versions written to this file. When reading a file, all the TStreamerInfo objects are read back in memory and registered to the TClass list of TStreamerInfo. One can see the list and contents of the TStreamerInfo on a file with, e.g.,

TFile f("myfile.root");

f.ShowStreamerInfo();

f

#define f(i)

Definition RSha256.hxx:104

TFile

A ROOT file is a suite of consecutive data records (TKey instances) with a well defined format.

Definition TFile.h:54

A TStreamerInfo is a list of TStreamerElement objects (one per data member or base class). When streaming an object, the system (TClass) loops on all the TStreamerElement objects and calls the appropriate function for each element type.

Definition at line 44 of file TStreamerInfo.h.

Classes
class	TCompInfo

class	TPointerCollectionAdapter

Public Types
enum	EReadWrite { kBase = 0 , kOffsetL = 20 , kOffsetP = 40 , kCounter = 6 , kCharStar = 7 , kChar = 1 , kShort = 2 , kInt = 3 , kLong = 4 , kFloat = 5 , kDouble = 8 , kDouble32 = 9 , kLegacyChar = 10 , kUChar = 11 , kUShort = 12 , kUInt = 13 , kULong = 14 , kBits = 15 , kLong64 = 16 , kULong64 = 17 , kBool = 18 , kFloat16 = 19 , kObject = 61 , kAny = 62 , kObjectp = 63 , kObjectP = 64 , kTString = 65 , kTObject = 66 , kTNamed = 67 , kAnyp = 68 , kAnyP = 69 , kAnyPnoVT = 70 , kSTLp = 71 , kSkip = 100 , kSkipL = 120 , kSkipP = 140 , kConv = 200 , kConvL = 220 , kConvP = 240 , kSTL = 300 , kSTLstring = 365 , kStreamer = 500 , kStreamLoop = 501 , kCache = 600 , kArtificial = 1000 , kCacheNew = 1001 , kCacheDelete = 1002 , kNeedObjectForVirtualBaseClass = 99997 , kMissing = 99999 }
	Status bits See TVirtualStreamerInfo::EStatusBits for the values. More...

typedef TCompInfo	TCompInfo_t

Public Types inherited from TVirtualStreamerInfo
enum	EReadWrite { kBase = 0 , kOffsetL = 20 , kOffsetP = 40 , kCounter = 6 , kCharStar = 7 , kChar = 1 , kShort = 2 , kInt = 3 , kLong = 4 , kFloat = 5 , kDouble = 8 , kDouble32 = 9 , kUChar = 11 , kUShort = 12 , kUInt = 13 , kULong = 14 , kBits = 15 , kLong64 = 16 , kULong64 = 17 , kBool = 18 , kFloat16 = 19 , kObject = 61 , kAny = 62 , kObjectp = 63 , kObjectP = 64 , kTString = 65 , kTObject = 66 , kTNamed = 67 , kAnyp = 68 , kAnyP = 69 , kAnyPnoVT = 70 , kSTLp = 71 , kSkip = 100 , kSkipL = 120 , kSkipP = 140 , kConv = 200 , kConvL = 220 , kConvP = 240 , kSTL = ROOT::kSTLany , kSTLstring = ROOT::kSTLstring , kStreamer = 500 , kStreamLoop = 501 , kCache = 600 , kArtificial = 1000 , kCacheNew = 1001 , kCacheDelete = 1002 , kNeedObjectForVirtualBaseClass = 99997 , kMissing = 99999 }

enum	EStatusBits { kCannotOptimize = BIT(12) , kIgnoreTObjectStreamer = BIT(13) , kRecovered = BIT(14) , kNeedCheck = BIT(15) , kIsCompiled = BIT(16) , kBuildOldUsed = BIT(17) , kBuildRunning = BIT(18) }

enum class	EStatusBitsDupExceptions { kIgnoreTObjectStreamer = TVirtualStreamerInfo::kIgnoreTObjectStreamer }

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
	TStreamerInfo ()
	Default ctor.

	TStreamerInfo (TClass *cl)
	Create a TStreamerInfo object.

virtual	~TStreamerInfo ()
	TStreamerInfo dtor.

void	Build (Bool_t isTransient=kFALSE)
	Build the I/O data structure for the current class version.

void	BuildCheck (TFile *file=0, Bool_t load=kTRUE)
	Check if built and consistent with the class dictionary.

void	BuildEmulated (TFile *file)
	Create an Emulation TStreamerInfo object.

virtual Bool_t	BuildFor (const TClass *cl)
	Check if we can build this for foreign class - do we have some rules to do that.

void	BuildOld ()
	rebuild the TStreamerInfo structure

void	CallShowMembers (const void *obj, TMemberInspector &insp, Bool_t isTransient) const
	Emulated a call ShowMembers() on the obj of this class type, passing insp and parent.

void	Clear (Option_t *)
	If opt contains 'built', reset this StreamerInfo as if Build or BuildOld was never called on it (useful to force their re-running).

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

Bool_t	CompareContent (TClass cl, TVirtualStreamerInfo info, Bool_t warn, Bool_t complete, TFile *file)
	Return True if the current StreamerInfo in cl or info is equivalent to this TStreamerInfo.

void	Compile ()
	loop on the TStreamerElement list regroup members with same type Store predigested information into local arrays.

void	ComputeSize ()
	Compute total size of all persistent elements of the class.

void	DeleteArray (void *p, Bool_t dtorOnly=kFALSE)
	Destroy an array of emulated objects, with optional delete.

void	Destructor (void *p, Bool_t dtorOnly=kFALSE)
	Emulated destructor for this class.

void	ForceWriteInfo (TFile *file, Bool_t force=kFALSE)
	Recursively mark streamer infos for writing to a file.

virtual TClassStreamer *	GenEmulatedClassStreamer (const char *class_name, Bool_t silent)
	Generate emulated class streamer for a given collection class.

virtual TVirtualCollectionProxy *	GenEmulatedProxy (const char *class_name, Bool_t silent)
	Generate emulated collection proxy for a given class.

Int_t	GenerateHeaderFile (const char dirname, const TList subClasses=0, const TList *extrainfos=0)
	Generate header file for the class described by this TStreamerInfo the function is called by TFile::MakeProject for each class in the file.

virtual TVirtualStreamerInfo *	GenerateInfoForPair (const std::string &firstname, const std::string &secondname, bool silent, size_t hint_pair_offset, size_t hint_pair_size)

virtual TVirtualStreamerInfo *	GenerateInfoForPair (const std::string &pairclassname, bool silent, size_t hint_pair_offset, size_t hint_pair_size)

virtual TClassStreamer *	GenExplicitClassStreamer (const ::ROOT::Detail::TCollectionProxyInfo &info, TClass *cl)
	Generate class streamer from static functions.

virtual TVirtualCollectionProxy *	GenExplicitProxy (const ::ROOT::Detail::TCollectionProxyInfo &info, TClass *cl)
	Generate proxy from static functions.

TClass *	GetActualClass (const void *obj) const
	Assuming that obj points to (the part of) an object that is of the type described by this streamerInfo, return the actual type of the object (i.e.

UInt_t	GetCheckSum () const

UInt_t	GetCheckSum (TClass::ECheckSum code) const
	Recalculate the checksum of this TStreamerInfo based on its code.

TClass *	GetClass () const

Int_t	GetClassVersion () const

Int_t	GetDataMemberOffset (TDataMember dm, TMemberStreamer &streamer) const
	Compute data member offset.

TStreamerElement *	GetElem (Int_t id) const

TStreamerElement *	GetElement (Int_t id) const

Int_t	GetElementOffset (Int_t id) const

TObjArray *	GetElements () const

Int_t	GetLength (Int_t id) const

ULong_t	GetMethod (Int_t id) const

Int_t	GetNdata () const

Int_t	GetNelement () const

Int_t	GetNewType (Int_t id) const

Int_t	GetNumber () const

Int_t	GetOffset (const char *) const
	Return the offset of the data member as indicated by this StreamerInfo.

Int_t	GetOffset (Int_t id) const

Version_t	GetOldVersion () const

Int_t	GetOnFileClassVersion () const

TStreamerInfoActions::TActionSequence *	GetReadMemberWiseActions (Bool_t forCollection)

TStreamerInfoActions::TActionSequence *	GetReadObjectWiseActions ()

TStreamerInfoActions::TActionSequence *	GetReadTextActions ()

Int_t	GetSize () const
	Return total size of all persistent elements of the class (with offsets).

Int_t	GetSizeElements () const
	Return total size of all persistent elements of the class use GetSize if you want to get the real size in memory.

TStreamerElement *	GetStreamerElement (const char *datamember, Int_t &offset) const
	Return the StreamerElement of "datamember" inside our class or any of its base classes.

TStreamerElement *	GetStreamerElementReal (Int_t i, Int_t j) const
	Obsolete: this routine is obsolete and should not longer be used.

Int_t	GetType (Int_t id) const

template<typename T >
T	GetTypedValue (char *pointer, Int_t i, Int_t j, Int_t len) const
	Return value of element i in object at pointer.

template<typename T >
T	GetTypedValueClones (TClonesArray *clones, Int_t i, Int_t j, Int_t k, Int_t eoffset) const

template<typename T >
T	GetTypedValueSTL (TVirtualCollectionProxy *cont, Int_t i, Int_t j, Int_t k, Int_t eoffset) const
	Return value of element i in object number j in a TClonesArray and eventually element k in a sub-array.

template<typename T >
T	GetTypedValueSTLP (TVirtualCollectionProxy *cont, Int_t i, Int_t j, Int_t k, Int_t eoffset) const
	Return value of element i in object number j in a TClonesArray and eventually element k in a sub-array.

Double_t	GetValue (char *pointer, Int_t i, Int_t j, Int_t len) const

Double_t	GetValueClones (TClonesArray *clones, Int_t i, Int_t j, Int_t k, Int_t eoffset) const

Double_t	GetValueSTL (TVirtualCollectionProxy *cont, Int_t i, Int_t j, Int_t k, Int_t eoffset) const

Double_t	GetValueSTLP (TVirtualCollectionProxy *cont, Int_t i, Int_t j, Int_t k, Int_t eoffset) const

TStreamerInfoActions::TActionSequence *	GetWriteMemberWiseActions (Bool_t forCollection)

TStreamerInfoActions::TActionSequence *	GetWriteObjectWiseActions ()

TStreamerInfoActions::TActionSequence *	GetWriteTextActions ()

void	ls (Option_t *option="") const
	List the TStreamerElement list and also the precomputed tables if option contains the string "incOrig", also prints the original (non-optimized elements in the list of compiled elements.

Bool_t	MatchLegacyCheckSum (UInt_t checksum) const
	Return true if the checksum passed as argument is one of the checksum value produced by the older checksum calculation algorithm.

void *	New (void *obj=0)
	An emulated object is created at address obj, if obj is null we allocate memory for the object.

void *	NewArray (Long_t nElements, void *ary=0)
	An array of emulated objects is created at address ary, if ary is null, we allocate memory for the array.

TVirtualStreamerInfo *	NewInfo (TClass *cl)

void	PrintValue (const char name, char pointer, Int_t i, Int_t len, Int_t lenmax=1000) const
	print value of element i in object at pointer The function may be called in two ways: -method1 len < 0 i is assumed to be the TStreamerElement number i in StreamerInfo -method2 len >= 0 i is the type address of variable is directly pointer.

void	PrintValueClones (const char name, TClonesArray clones, Int_t i, Int_t eoffset, Int_t lenmax=1000) const
	Print value of element i in a TClonesArray.

void	PrintValueSTL (const char name, TVirtualCollectionProxy cont, Int_t i, Int_t eoffset, Int_t lenmax=1000) const
	Print value of element i in a TClonesArray.

template<class T >
Int_t	ReadBuffer (TBuffer &b, const T &arrptr, TCompInfo const const compinfo, Int_t first, Int_t last, Int_t narr=1, Int_t eoffset=0, Int_t mode=0)
	Deserialize information from buffer b into object at pointer if (arrayMode & 1) ptr is a pointer to array of pointers to the objects otherwise it is a pointer to a pointer to a single object.

template<class T >
Int_t	ReadBufferArtificial (TBuffer &b, const T &arrptr, TStreamerElement *aElement, Int_t narr, Int_t eoffset)
	Handle Artificial StreamerElement.

Int_t	ReadBufferClones (TBuffer &b, TClonesArray *clones, Int_t nc, Int_t first, Int_t eoffset)
	Read for TClonesArray.

template<class T >
Int_t	ReadBufferConv (TBuffer &b, const T &arrptr, const TCompInfo compinfo, Int_t kase, TStreamerElement aElement, Int_t narr, Int_t eoffset)
	Convert elements of a TClonesArray.

template<class T >
Int_t	ReadBufferSkip (TBuffer &b, const T &arrptr, const TCompInfo compinfo, Int_t kase, TStreamerElement aElement, Int_t narr, Int_t eoffset)
	Skip an element.

Int_t	ReadBufferSTL (TBuffer &b, TVirtualCollectionProxy *cont, Int_t nc, Int_t eoffset, Bool_t v7=kTRUE)
	The STL vector/list is deserialized from the buffer b.

void	SetCheckSum (UInt_t checksum)

void	SetClass (TClass *cl)
	Replace the TClass this streamerInfo is pointing to (belongs to)

void	SetClassVersion (Int_t vers)

void	SetOnFileClassVersion (Int_t vers)

void	TagFile (TFile *fFile)
	Mark the classindex of the current file as using this TStreamerInfo.

virtual void	Update (const TClass oldClass, TClass newClass)
	function called by the TClass constructor when replacing an emulated class by the real class

template<class T >
Int_t	WriteBufferAux (TBuffer &b, const T &arr, TCompInfo const const compinfo, Int_t first, Int_t last, Int_t narr, Int_t eoffset, Int_t mode)
	The object at pointer is serialized to the buffer b if (arrayMode & 1) ptr is a pointer to array of pointers to the objects otherwise it is a pointer to a pointer to a single object.

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

	TVirtualStreamerInfo (TClass *)
	Default constructor.

virtual	~TVirtualStreamerInfo ()
	Destructor.

Bool_t	IsBuilt () const

Bool_t	IsCompiled () const

Bool_t	IsOptimized () const

Int_t	IsRecovered () const

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.

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

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

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

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

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

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

virtual Bool_t	IsSortable () const

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

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

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 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 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)

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.

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 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.

Static Public Member Functions
static TStreamerElement *	GetCurrentElement ()
	static function returning a pointer to the current TStreamerElement fgElement points to the current TStreamerElement being read in ReadBuffer

Static Public Member Functions inherited from TVirtualStreamerInfo
static Bool_t	CanDelete ()
	static function returning true if ReadBuffer can delete object

static Bool_t	CanOptimize ()
	static function returning true if optimization can be on

static TVirtualStreamerInfo *	Factory ()
	Static function returning a pointer to a new TVirtualStreamerInfo object.

static TStreamerBasicType *	GetElementCounter (const char countName, TClass cl)
	Get pointer to a TStreamerBasicType in TClass *cl static function.

static const char *	GetElementCounterStart (const char *dmTitle)
	Given a comment/title declaring an array counter, for example:

static Bool_t	GetStreamMemberWise ()
	Return whether the TStreamerInfos will save the collections in "member-wise" order whenever possible.

static void	Optimize (Bool_t opt=kTRUE)
	This is a static function.

static void	SetCanDelete (Bool_t opt=kTRUE)
	This is a static function.

static void	SetFactory (TVirtualStreamerInfo *factory)
	static function: Set the StreamerInfo factory

static Bool_t	SetStreamMemberWise (Bool_t enable=kTRUE)
	Set whether the TStreamerInfos will save the collections in "member-wise" order whenever possible.

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.

Private Member Functions
	TStreamerInfo (const TStreamerInfo &)=delete

void	AddReadAction (TStreamerInfoActions::TActionSequence readSequence, Int_t index, TCompInfo compinfo)
	Add a read action for the given element.

void	AddReadMemberWiseVecPtrAction (TStreamerInfoActions::TActionSequence readSequence, Int_t index, TCompInfo compinfo)
	Add a read action for the given element.

void	AddReadTextAction (TStreamerInfoActions::TActionSequence readSequence, Int_t index, TCompInfo compinfo)
	Add a read text action for the given element.

void	AddWriteAction (TStreamerInfoActions::TActionSequence writeSequence, Int_t index, TCompInfo compinfo)

void	AddWriteMemberWiseVecPtrAction (TStreamerInfoActions::TActionSequence writeSequence, Int_t index, TCompInfo compinfo)
	This is for streaming via a TClonesArray (or a vector of pointers of this type).

void	AddWriteTextAction (TStreamerInfoActions::TActionSequence writeSequence, Int_t index, TCompInfo compinfo)

void	DestructorImpl (void *p, Bool_t dtorOnly)
	Internal part of the destructor.

void	GenerateDeclaration (FILE fp, FILE sfp, const TList *subClasses, Bool_t top=kTRUE)
	Write the Declaration of class.

UInt_t	GenerateIncludes (FILE fp, char inclist, const TList *extrainfos)
	Add to the header file, the #include need for this class.

void	InsertArtificialElements (std::vector< const ROOT::TSchemaRule * > &rules)
	Insert new members as expressed in the array of TSchemaRule(s).

TStreamerInfo &	operator= (const TStreamerInfo &)=delete

Int_t	WriteBuffer (TBuffer &b, char *pointer, Int_t first)
	General Write.

Int_t	WriteBufferClones (TBuffer &b, TClonesArray *clones, Int_t nc, Int_t first, Int_t eoffset)
	Write for ClonesArray ('first' is an id between -1 and fNfulldata).

Int_t	WriteBufferSTL (TBuffer &b, TVirtualCollectionProxy *cont, Int_t nc)
	Write for STL container. ('first' is an id between -1 and fNfulldata).

Int_t	WriteBufferSTLPtrs (TBuffer &b, TVirtualCollectionProxy *cont, Int_t nc, Int_t first, Int_t eoffset)
	Write for STL container.

Static Private Member Functions
template<typename T >
static T	GetTypedValueAux (Int_t type, void *ladd, int k, Int_t len)
	Get the value from inside a collection.

static void	PrintValueAux (char ladd, Int_t atype, TStreamerElement aElement, Int_t aleng, Int_t *count)
	print value of element in object at pointer, type atype, leng aleng or *count The function may be called in two ways: -method1 len < 0 i is assumed to be the TStreamerElement number i in StreamerInfo -method2 len >= 0 i is the type address of variable is directly pointer.

Private Attributes
UInt_t	fCheckSum
	Checksum of original class.

TClass *	fClass
	!pointer to class

Int_t	fClassVersion
	Class version identifier.

TCompInfo *	fComp
	![fNslots with less than fElements->GetEntries()*1.5 used] Compiled info

TCompInfo **	fCompFull
	![fElements->GetEntries()]

TCompInfo **	fCompOpt
	![fNdata]

TObjArray *	fElements
	Array of TStreamerElements.

Int_t	fNdata
	!number of optimized elements

Int_t	fNfulldata
	!number of elements

Int_t	fNslots
	!total numbrer of slots in fComp.

Int_t	fNumber
	!Unique identifier

Int_t	fNVirtualInfoLoc
	! Number of virtual info location to update.

Version_t	fOldVersion
	! Version of the TStreamerInfo object read from the file

Int_t	fOnFileClassVersion
	!Class version identifier as stored on file.

TStreamerInfoActions::TActionSequence *	fReadMemberWise
	! List of read action resulting from the compilation for use in member wise streaming.

TStreamerInfoActions::TActionSequence *	fReadMemberWiseVecPtr
	! List of read action resulting from the compilation for use in member wise streaming.

TStreamerInfoActions::TActionSequence *	fReadObjectWise
	! List of read action resulting from the compilation.

TStreamerInfoActions::TActionSequence *	fReadText
	! List of text read action resulting from the compilation, used for JSON.

Int_t	fSize
	!size of the persistent class

ULong_t *	fVirtualInfoLoc
	![fNVirtualInfoLoc] Location of the pointer to the TStreamerInfo inside the object (when emulated)

TStreamerInfoActions::TActionSequence *	fWriteMemberWise
	! List of write action resulting from the compilation for use in member wise streaming.

TStreamerInfoActions::TActionSequence *	fWriteMemberWiseVecPtr
	! List of write action resulting from the compilation for use in member wise streaming.

TStreamerInfoActions::TActionSequence *	fWriteObjectWise
	! List of write action resulting from the compilation.

TStreamerInfoActions::TActionSequence *	fWriteText
	! List of text write action resulting for the compilation, used for JSON.

Static Private Attributes
static std::atomic< Int_t >	fgCount {0}
	Number of TStreamerInfo instances.

Friends
class	TStreamerInfoActions::TActionSequence

Additional Inherited Members
Protected Types inherited from TObject
enum	{ kOnlyPrepStep = BIT(3) }

Protected Member Functions inherited from TVirtualStreamerInfo
	TVirtualStreamerInfo (const TVirtualStreamerInfo &info)
	copy constructor

TVirtualStreamerInfo &	operator= (const TVirtualStreamerInfo &)
	assignment operator

void	ResetIsCompiled ()

void	SetIsCompiled ()

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 inherited from TVirtualStreamerInfo
Bool_t	fIsBuilt: 1
	true if the StreamerInfo has been optimized

std::atomic< Bool_t >	fIsCompiled
	true if the StreamerInfo has been 'built' (i.e. has all the StreamerElements it should have)

Bool_t	fOptimized: 1

Protected Attributes inherited from TNamed
TString	fName

TString	fTitle

Static Protected Attributes inherited from TVirtualStreamerInfo
static Bool_t	fgCanDelete = kTRUE
	true if the StreamerInfo has been compiled (i.e. fully built, ready to use for streaming).

static TVirtualStreamerInfo *	fgInfoFactory = 0

static Bool_t	fgOptimize = kTRUE

static Bool_t	fgStreamMemberWise = kTRUE

#include <TStreamerInfo.h>

Inheritance diagram for TStreamerInfo:

[legend]

Member Typedef Documentation

◆ TCompInfo_t

typedef TCompInfo TStreamerInfo::TCompInfo_t

Definition at line 71 of file TStreamerInfo.h.

Member Enumeration Documentation

◆ EReadWrite

enum TStreamerInfo::EReadWrite

Status bits See TVirtualStreamerInfo::EStatusBits for the values.

EReadWrite Enumerator

Enum Constant	Description
kBase	Base class element
kOffsetL	Fixed size array
kOffsetP	Pointer to object
kCounter	Counter for array size
kCharStar	Pointer to array of char
kLegacyChar	Equal to TDataType's kchar
kBits	TObject::fBits in case of a referenced object
kObject	Class derived from TObject, or for TStreamerSTL::fCtype non-pointer elements
kObjectp	Class* derived from TObject and with comment field //->Class, or for TStreamerSTL::fCtype: pointer elements
kObjectP	Class* derived from TObject and with NO comment field //->Class
kAny	Class not derived from TObject
kAnyp	Class* not derived from TObject with comment field //->Class
kAnyP	Class* not derived from TObject with NO comment field //->Class
kAnyPnoVT	Class* not derived from TObject with NO comment field //->Class and Class has NO virtual table
kSTLp	Pointer to STL container
kTString	TString, special case
kTObject	TObject, special case
kTNamed	TNamed , special case
kCache	Cache the value in memory than is not part of the object but is accessible via a SchemaRule

Enumerator
kBase
kOffsetL
kOffsetP
kCounter
kCharStar
kChar
kShort
kInt
kLong
kFloat
kDouble
kDouble32
kLegacyChar
kUChar	Equal to TDataType's kchar.
kUShort
kUInt
kULong
kBits
kLong64
kULong64
kBool
kFloat16
kObject
kAny
kObjectp
kObjectP
kTString
kTObject
kTNamed
kAnyp
kAnyP
kAnyPnoVT
kSTLp
kSkip
kSkipL
kSkipP
kConv
kConvL
kConvP
kSTL
kSTLstring
kStreamer
kStreamLoop
kCache
kArtificial	Cache the value in memory than is not part of the object but is accessible via a SchemaRule.
kCacheNew
kCacheDelete
kNeedObjectForVirtualBaseClass
kMissing

Definition at line 165 of file TStreamerInfo.h.

Constructor & Destructor Documentation

◆ TStreamerInfo() [1/3]

TStreamerInfo::TStreamerInfo ( const TStreamerInfo & )

privatedelete

◆ TStreamerInfo() [2/3]

TStreamerInfo::TStreamerInfo ( )

Default ctor.

Definition at line 146 of file TStreamerInfo.cxx.

◆ TStreamerInfo() [3/3]

TStreamerInfo::TStreamerInfo ( TClass * cl )

Create a TStreamerInfo object.

Definition at line 178 of file TStreamerInfo.cxx.

◆ ~TStreamerInfo()

TStreamerInfo::~TStreamerInfo ( )

virtual

TStreamerInfo dtor.

Definition at line 212 of file TStreamerInfo.cxx.

Member Function Documentation

◆ AddReadAction()

void TStreamerInfo::AddReadAction	(	TStreamerInfoActions::TActionSequence *	readSequence,
		Int_t	index,
		TStreamerInfo::TCompInfo *	compinfo
	)

private

Add a read action for the given element.

Definition at line 3267 of file TStreamerInfoActions.cxx.

◆ AddReadMemberWiseVecPtrAction()

void TStreamerInfo::AddReadMemberWiseVecPtrAction	(	TStreamerInfoActions::TActionSequence *	readSequence,
		Int_t	i,
		TStreamerInfo::TCompInfo *	compinfo
	)

private

Add a read action for the given element.

This is for streaming via a TClonesArray (or a vector of pointers of this type).

Definition at line 3566 of file TStreamerInfoActions.cxx.

◆ AddReadTextAction()

void TStreamerInfo::AddReadTextAction	(	TStreamerInfoActions::TActionSequence *	readSequence,
		Int_t	index,
		TStreamerInfo::TCompInfo *	compinfo
	)

private

Add a read text action for the given element.

Definition at line 3499 of file TStreamerInfoActions.cxx.

◆ AddWriteAction()

void TStreamerInfo::AddWriteAction	(	TStreamerInfoActions::TActionSequence *	writeSequence,
		Int_t	index,
		TStreamerInfo::TCompInfo *	compinfo
	)

private

Definition at line 3582 of file TStreamerInfoActions.cxx.

◆ AddWriteMemberWiseVecPtrAction()

void TStreamerInfo::AddWriteMemberWiseVecPtrAction	(	TStreamerInfoActions::TActionSequence *	writeSequence,
		Int_t	index,
		TStreamerInfo::TCompInfo *	compinfo
	)

private

This is for streaming via a TClonesArray (or a vector of pointers of this type).

Definition at line 3886 of file TStreamerInfoActions.cxx.

◆ AddWriteTextAction()

void TStreamerInfo::AddWriteTextAction	(	TStreamerInfoActions::TActionSequence *	writeSequence,
		Int_t	index,
		TStreamerInfo::TCompInfo *	compinfo
	)

private

Definition at line 3688 of file TStreamerInfoActions.cxx.

◆ Build()

void TStreamerInfo::Build ( Bool_t isTransient = kFALSE )

virtual

Build the I/O data structure for the current class version.

A list of TStreamerElement derived classes is built by scanning one by one the list of data members of the analyzed class.

Int_t TStreamerInfo::GetDataMemberOffset	(	TDataMember *	dm,
		TMemberStreamer *&	streamer
	)		const

TStreamerElement * TStreamerInfo::GetStreamerElementReal	(	Int_t	i,
		Int_t	j
	)		const

T TStreamerInfo::GetTypedValue	(	char *	pointer,
		Int_t	i,
		Int_t	j,
		Int_t	len
	)		const

T TStreamerInfo::GetTypedValueClones	(	TClonesArray *	clones,
		Int_t	i,
		Int_t	j,
		Int_t	k,
		Int_t	eoffset
	)		const

T TStreamerInfo::GetTypedValueSTL	(	TVirtualCollectionProxy *	cont,
		Int_t	i,
		Int_t	j,
		Int_t	k,
		Int_t	eoffset
	)		const

T TStreamerInfo::GetTypedValueSTLP	(	TVirtualCollectionProxy *	cont,
		Int_t	i,
		Int_t	j,
		Int_t	k,
		Int_t	eoffset
	)		const

void TStreamerInfo::PrintValue	(	const char *	name,
		char *	pointer,
		Int_t	i,
		Int_t	len,
		Int_t	lenmax = `1000`
	)		const

void TStreamerInfo::PrintValueClones	(	const char *	name,
		TClonesArray *	clones,
		Int_t	i,
		Int_t	eoffset,
		Int_t	lenmax = `1000`
	)		const

void TStreamerInfo::PrintValueSTL	(	const char *	name,
		TVirtualCollectionProxy *	cont,
		Int_t	i,
		Int_t	eoffset,
		Int_t	lenmax = `1000`
	)		const

template Int_t TStreamerInfo::ReadBuffer< TVirtualArray >	(	TBuffer &	b,
		const T &	arrptr,
		TCompInfo const const	compinfo,
		Int_t	first,
		Int_t	last,
		Int_t	narr = `1`,
		Int_t	eoffset = `0`,
		Int_t	mode = `0`
	)

Int_t TStreamerInfo::ReadBufferClones	(	TBuffer &	b,
		TClonesArray *	clones,
		Int_t	nc,
		Int_t	first,
		Int_t	eoffset
	)

Int_t TStreamerInfo::ReadBufferSTL	(	TBuffer &	b,
		TVirtualCollectionProxy *	cont,
		Int_t	nc,
		Int_t	eoffset,
		Bool_t	v7 = `kTRUE`
	)

template Int_t TStreamerInfo::WriteBufferAux< char ** >	(	TBuffer &	b,
		const T &	arr,
		TCompInfo const const	compinfo,
		Int_t	first,
		Int_t	last,
		Int_t	narr,
		Int_t	eoffset,
		Int_t	mode
	)

Classes

Public Types

Public Member Functions

Static Public Member Functions

Private Member Functions

Static Private Member Functions

Private Attributes

Static Private Attributes

Friends

Additional Inherited Members

Member Typedef Documentation

◆ TCompInfo_t

Member Enumeration Documentation

◆ EReadWrite

Constructor & Destructor Documentation

◆ TStreamerInfo() [1/3]

◆ TStreamerInfo() [2/3]

◆ TStreamerInfo() [3/3]

◆ ~TStreamerInfo()

Member Function Documentation

◆ AddReadAction()

◆ AddReadMemberWiseVecPtrAction()

◆ AddReadTextAction()

◆ AddWriteAction()

◆ AddWriteMemberWiseVecPtrAction()

◆ AddWriteTextAction()

◆ Build()

◆ BuildCheck()

◆ BuildEmulated()

◆ BuildFor()

◆ BuildOld()

◆ CallShowMembers()

◆ Clear()

◆ Clone()

◆ CompareContent()

◆ Compile()

◆ ComputeSize()

◆ DeleteArray()

◆ Destructor()

◆ DestructorImpl()

◆ ForceWriteInfo()

◆ GenEmulatedClassStreamer()

◆ GenEmulatedProxy()

◆ GenerateDeclaration()

◆ GenerateHeaderFile()

◆ GenerateIncludes()

◆ GenerateInfoForPair() [1/2]

◆ GenerateInfoForPair() [2/2]

◆ GenExplicitClassStreamer()

◆ GenExplicitProxy()

◆ GetActualClass()

◆ GetCheckSum() [1/2]

◆ GetCheckSum() [2/2]

WARNING

◆ GetClass()

◆ GetClassVersion()

◆ GetCurrentElement()

◆ GetDataMemberOffset()

◆ GetElem()

◆ GetElement()

◆ GetElementOffset()

◆ GetElements()

◆ GetLength()

◆ GetMethod()

◆ GetNdata()

◆ GetNelement()

◆ GetNewType()

◆ GetNumber()

◆ GetOffset() [1/2]

◆ GetOffset() [2/2]

◆ GetOldVersion()

◆ GetOnFileClassVersion()

◆ GetReadMemberWiseActions()

◆ GetReadObjectWiseActions()

◆ GetReadTextActions()

◆ GetSize()

◆ GetSizeElements()

◆ GetStreamerElement()

◆ GetStreamerElementReal()

◆ GetType()