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ROOT
Reference Guide |
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ROOT
Reference Guide |
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A TTree is a list of TBranches.
A TBranch supports:
See TBranch structure in TTree.
See also specialized branches:
Public Member Functions | |
| TBranch () | |
| Default constructor. Used for I/O by default. | |
| TBranch (TBranch *parent, const char *name, void *address, const char *leaflist, Int_t basketsize=32000, Int_t compress=ROOT::RCompressionSetting::EAlgorithm::kInherit) | |
| Create a Branch as a child of another Branch. | |
| TBranch (TTree *tree, const char *name, void *address, const char *leaflist, Int_t basketsize=32000, Int_t compress=ROOT::RCompressionSetting::EAlgorithm::kInherit) | |
| Create a Branch as a child of a Tree. | |
| ~TBranch () override | |
| Destructor. | |
| virtual void | AddBasket (TBasket &b, bool ondisk, Long64_t startEntry) |
| Add the basket to this branch. | |
| virtual void | AddLastBasket (Long64_t startEntry) |
| Add the start entry of the write basket (not yet created) | |
| Int_t | BackFill () |
| Loop on all leaves of this branch to back fill Basket buffer. | |
| void | Browse (TBrowser *b) override |
| Browser interface. | |
| virtual void | DeleteBaskets (Option_t *option="") |
| Loop on all branch baskets. | |
| virtual void | DropBaskets (Option_t *option="") |
| Loop on all branch baskets. | |
| void | ExpandBasketArrays () |
| Increase BasketEntry buffer of a minimum of 10 locations and a maximum of 50 per cent of current size. | |
| Int_t | Fill () |
| virtual Int_t | FillImpl (ROOT::Internal::TBranchIMTHelper *) |
| Loop on all leaves of this branch to fill Basket buffer. | |
| virtual TBranch * | FindBranch (const char *name) |
| Find the immediate sub-branch with passed name. | |
| virtual TLeaf * | FindLeaf (const char *name) |
| Find the leaf corresponding to the name 'searchname'. | |
| Int_t | FlushBaskets () |
| Flush to disk all the baskets of this branch and any of subbranches. | |
| Int_t | FlushOneBasket (UInt_t which) |
| If we have a write basket in memory and it contains some entries and has not yet been written to disk, we write it and delete it from memory. | |
| virtual char * | GetAddress () const |
| TBasket * | GetBasket (Int_t basket) |
| Int_t * | GetBasketBytes () const |
| Long64_t * | GetBasketEntry () const |
| virtual Long64_t | GetBasketSeek (Int_t basket) const |
| Return address of basket in the file. | |
| virtual Int_t | GetBasketSize () const |
| virtual TList * | GetBrowsables () |
| Returns (and, if 0, creates) browsable objects for this branch See TVirtualBranchBrowsable::FillListOfBrowsables. | |
| ROOT::Experimental::Internal::TBulkBranchRead & | GetBulkRead () |
| virtual const char * | GetClassName () const |
| Return the name of the user class whose content is stored in this branch, if any. | |
| Int_t | GetCompressionAlgorithm () const |
| Int_t | GetCompressionLevel () const |
| Int_t | GetCompressionSettings () const |
| TDirectory * | GetDirectory () const |
| Long64_t | GetEntries () const |
| virtual Int_t | GetEntry (Long64_t entry=0, Int_t getall=0) |
| Read all leaves of entry and return total number of bytes read. | |
| virtual Int_t | GetEntryExport (Long64_t entry, Int_t getall, TClonesArray *list, Int_t n) |
| Read all leaves of an entry and export buffers to real objects in a TClonesArray list. | |
| Long64_t | GetEntryNumber () const |
| Int_t | GetEntryOffsetLen () const |
| Int_t | GetEvent (Long64_t entry=0) |
| virtual Int_t | GetExpectedType (TClass *&clptr, EDataType &type) |
| Fill expectedClass and expectedType with information on the data type of the object/values contained in this branch (and thus the type of pointers expected to be passed to Set[Branch]Address return 0 in case of success and > 0 in case of failure. | |
| virtual TFile * | GetFile (Int_t mode=0) |
| Return pointer to the file where branch buffers reside, returns 0 in case branch buffers reside in the same file as tree header. | |
| const char * | GetFileName () const |
| Long64_t | GetFirstEntry () const |
| virtual TString | GetFullName () const |
| Return the 'full' name of the branch. | |
| const char * | GetIconName () const override |
| Return icon name depending on type of branch. | |
| TIOFeatures | GetIOFeatures () const |
| Returns the IO settings currently in use for this branch. | |
| virtual TLeaf * | GetLeaf (const char *name) const |
| Return pointer to the 1st Leaf named name in thisBranch. | |
| TObjArray * | GetListOfBaskets () |
| TObjArray * | GetListOfBranches () |
| TObjArray * | GetListOfLeaves () |
| virtual bool | GetMakeClass () const |
| Return whether this branch is in a mode where the object are decomposed or not (Also known as MakeClass mode). | |
| Int_t | GetMaxBaskets () const |
| TBranch * | GetMother () const |
| Get our top-level parent branch in the tree. | |
| Int_t | GetNleaves () const |
| Int_t | GetOffset () const |
| Int_t | GetReadBasket () const |
| Long64_t | GetReadEntry () const |
| virtual Int_t | GetRow (Int_t row) |
| Return all elements of one row unpacked in internal array fValues [Actually just returns 1 (?)]. | |
| Int_t | GetSplitLevel () const |
| TBranch * | GetSubBranch (const TBranch *br) const |
| Find the parent branch of child. | |
| Long64_t | GetTotalSize (Option_t *option="") const |
| Return total number of bytes in the branch (including current buffer) | |
| Long64_t | GetTotBytes (Option_t *option="") const |
| Return total number of bytes in the branch (excluding current buffer) if option ="*" includes all sub-branches of this branch too. | |
| TBuffer * | GetTransientBuffer (Int_t size) |
| Returns the transient buffer currently used by this TBranch for reading/writing baskets. | |
| TTree * | GetTree () const |
| Int_t | GetWriteBasket () const |
| Long64_t | GetZipBytes (Option_t *option="") const |
| Return total number of zip bytes in the branch if option ="*" includes all sub-branches of this branch too. | |
| TClass * | IsA () const override |
| bool | IsAutoDelete () const |
| Return true if an existing object in a TBranchObject must be deleted. | |
| bool | IsFolder () const override |
| Return true if more than one leaf or browsables, false otherwise. | |
| virtual void | KeepCircular (Long64_t maxEntries) |
| keep a maximum of fMaxEntries in memory | |
| virtual Int_t | LoadBaskets () |
| Baskets associated to this branch are forced to be in memory. | |
| void | Print (Option_t *option="") const override |
| Print TBranch parameters. | |
| void | PrintCacheInfo () const |
| Print the information we have about which basket is currently cached and whether they have been 'used'/'read' from the cache. | |
| virtual void | ReadBasket (TBuffer &b) |
| Loop on all leaves of this branch to read Basket buffer. | |
| virtual void | Refresh (TBranch *b) |
| Refresh this branch using new information in b This function is called by TTree::Refresh. | |
| virtual void | Reset (Option_t *option="") |
| Reset a Branch. | |
| virtual void | ResetAddress () |
| Reset the address of the branch. | |
| virtual void | ResetAfterMerge (TFileMergeInfo *) |
| Reset a Branch. | |
| virtual void | ResetReadEntry () |
| virtual void | SetAddress (void *add) |
| Set address of this branch. | |
| virtual void | SetAutoDelete (bool autodel=true) |
| Set the automatic delete bit. | |
| virtual void | SetBasketSize (Int_t buffsize) |
| Set the basket size The function makes sure that the basket size is greater than fEntryOffsetlen. | |
| virtual void | SetBufferAddress (TBuffer *entryBuffer) |
| Set address of this branch directly from a TBuffer to avoid streaming. | |
| void | SetCompressionAlgorithm (Int_t algorithm=ROOT::RCompressionSetting::EAlgorithm::kUseGlobal) |
| Set compression algorithm. | |
| void | SetCompressionLevel (Int_t level=ROOT::RCompressionSetting::ELevel::kUseMin) |
| Set compression level. | |
| void | SetCompressionSettings (Int_t settings=ROOT::RCompressionSetting::EDefaults::kUseCompiledDefault) |
| Set compression settings. | |
| virtual void | SetEntries (Long64_t entries) |
| Set the number of entries in this branch. | |
| virtual void | SetEntryOffsetLen (Int_t len, bool updateSubBranches=false) |
| Update the default value for the branch's fEntryOffsetLen if and only if it was already non zero (and the new value is not zero) If updateExisting is true, also update all the existing branches. | |
| virtual void | SetFile (const char *filename) |
| Set file where this branch writes/reads its buffers. | |
| virtual void | SetFile (TFile *file=nullptr) |
| Set file where this branch writes/reads its buffers. | |
| virtual void | SetFirstEntry (Long64_t entry) |
| set the first entry number (case of TBranchSTL) | |
| void | SetIOFeatures (TIOFeatures &features) |
| virtual bool | SetMakeClass (bool decomposeObj=true) |
| Set the branch in a mode where the object are decomposed (Also known as MakeClass mode). | |
| virtual void | SetObject (void *objadd) |
| Set object this branch is pointing to. | |
| virtual void | SetOffset (Int_t offset=0) |
| virtual void | SetStatus (bool status=true) |
| Set branch status to Process or DoNotProcess. | |
| virtual void | SetTree (TTree *tree) |
| virtual void | SetupAddresses () |
| If the branch address is not set, we set all addresses starting with the top level parent branch. | |
| void | Streamer (TBuffer &) override |
| Stream a class object. | |
| void | StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b) |
| bool | SupportsBulkRead () const |
| Returns true if this branch supports bulk IO, false otherwise. | |
| virtual void | UpdateAddress () |
| virtual void | UpdateFile () |
| Refresh the value of fDirectory (i.e. | |
 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. | |
| void | Clear (Option_t *option="") override |
| Set name and title to empty strings (""). | |
| 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. | |
| TClass * | IsA () const override |
| 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 | Streamer (TBuffer &) override |
| Stream an object of class 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. | |
| 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 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). | |
| 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. | |
| 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. | |
| Public Member Functions inherited from TAttFill | |
| TAttFill () | |
| AttFill default constructor. | |
| TAttFill (Color_t fcolor, Style_t fstyle) | |
| AttFill normal constructor. | |
| virtual | ~TAttFill () |
| AttFill destructor. | |
| void | Copy (TAttFill &attfill) const |
| Copy this fill attributes to a new TAttFill. | |
| virtual Color_t | GetFillColor () const |
| Return the fill area color. | |
| virtual Style_t | GetFillStyle () const |
| Return the fill area style. | |
| virtual Bool_t | IsTransparent () const |
| virtual void | Modify () |
| Change current fill area attributes if necessary. | |
| virtual void | ResetAttFill (Option_t *option="") |
| Reset this fill attributes to default values. | |
| virtual void | SaveFillAttributes (std::ostream &out, const char *name, Int_t coldef=1, Int_t stydef=1001) |
| Save fill attributes as C++ statement(s) on output stream out. | |
| virtual void | SetFillAttributes () |
| Invoke the DialogCanvas Fill attributes. | |
| virtual void | SetFillColor (Color_t fcolor) |
| Set the fill area color. | |
| virtual void | SetFillColorAlpha (Color_t fcolor, Float_t falpha) |
| Set a transparent fill color. | |
| virtual void | SetFillStyle (Style_t fstyle) |
| Set the fill area style. | |
| void | StreamerNVirtual (TBuffer &ClassDef_StreamerNVirtual_b) |
Static Public Member Functions | |
| static TClass * | Class () |
| static const char * | Class_Name () |
| static constexpr Version_t | Class_Version () |
| static const char * | DeclFileName () |
| static void | ResetCount () |
| Static function resetting fgCount. | |
| 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. | |
| Static Public Member Functions inherited from TAttFill | |
| static TClass * | Class () |
| static const char * | Class_Name () |
| static constexpr Version_t | Class_Version () |
| static const char * | DeclFileName () |
Protected Types | |
| using | BulkObj = ROOT::Experimental::Internal::TBulkBranchRead |
| using | CacheInfo_t = ROOT::Internal::TBranchCacheInfo |
| enum | EStatusBits { kDoNotProcess = ::kDoNotProcess , kIsClone = ::kIsClone , kBranchObject = ::kBranchObject , kBranchAny = ::kBranchAny , kAutoDelete = (1ULL << ( 15 )) , kDoNotUseBufferMap = (1ULL << ( 22 )) } |
| TBranch status bits. More... | |
| typedef void(TBranch::* | FillLeaves_t) (TBuffer &b) |
| typedef void(TBranch::* | ReadLeaves_t) (TBuffer &b) |
| Protected Types inherited from TObject | |
| enum | { kOnlyPrepStep = (1ULL << ( 3 )) } |
Protected Member Functions | |
| void | FillLeavesImpl (TBuffer &b) |
| Loop on all leaves of this branch to fill Basket buffer. | |
| TBasket * | GetFreshBasket (Int_t basketnumber, TBuffer *user_buffer) |
| Return a fresh basket by either reusing an existing basket that needs to be drop (according to TTree::MemoryFull) or create a new one. | |
| TBasket * | GetFreshCluster (TBuffer *user_buffer) |
| Drops the cluster two behind the current cluster and returns a fresh basket by either reusing or creating a new one. | |
| TString | GetRealFileName () const |
| Get real file name. | |
| void | Init (const char *name, const char *leaflist, Int_t compress) |
| void | ReadLeaves0Impl (TBuffer &b) |
| Read zero leaves without the overhead of a loop. | |
| void | ReadLeaves1Impl (TBuffer &b) |
| Read one leaf without the overhead of a loop. | |
| void | ReadLeaves2Impl (TBuffer &b) |
| Read two leaves without the overhead of a loop. | |
| void | ReadLeavesImpl (TBuffer &b) |
| Loop on all leaves of this branch to read Basket buffer. | |
| virtual void | SetAddressImpl (void *addr, bool) |
| void | SetSkipZip (bool skip=true) |
| Int_t | WriteBasket (TBasket *basket, Int_t where) |
| 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 | |
| char * | fAddress |
| ! Address of 1st leaf (variable or object) | |
| Int_t * | fBasketBytes |
| [fMaxBaskets] Length of baskets on file | |
| Long64_t * | fBasketEntry |
| [fMaxBaskets] Table of first entry in each basket | |
| TObjArray | fBaskets |
| -> List of baskets of this branch | |
| Long64_t * | fBasketSeek |
| [fMaxBaskets] Addresses of baskets on file | |
| Int_t | fBasketSize |
| Initial Size of Basket Buffer. | |
| TObjArray | fBranches |
| -> List of Branches of this branch | |
| TList * | fBrowsables |
| ! List of TVirtualBranchBrowsables used for Browse() | |
| BulkObj | fBulk |
| ! Helper for performing bulk IO | |
| CacheInfo_t | fCacheInfo |
| ! Hold info about which basket are in the cache and if they have been retrieved from the cache. | |
| Int_t | fCompress |
| Compression level and algorithm. | |
| TBasket * | fCurrentBasket |
| ! Pointer to the current basket. | |
| TDirectory * | fDirectory |
| ! Pointer to directory where this branch buffers are stored | |
| Long64_t | fEntries |
| Number of entries. | |
| TBuffer * | fEntryBuffer |
| ! Buffer used to directly pass the content without streaming | |
| Long64_t | fEntryNumber |
| Current entry number (last one filled in this branch) | |
| Int_t | fEntryOffsetLen |
| Initial Length of fEntryOffset table in the basket buffers. | |
| TBasket * | fExtraBasket |
| ! Allocated basket not currently holding any data. | |
| TString | fFileName |
| Name of file where buffers are stored ("" if in same file as Tree header) | |
| FillLeaves_t | fFillLeaves |
| ! Pointer to the FillLeaves implementation to use. | |
| Long64_t | fFirstBasketEntry |
| ! First entry in the current basket. | |
| Long64_t | fFirstEntry |
| Number of the first entry in this branch. | |
| TIOFeatures | fIOFeatures |
| IO features for newly-created baskets. | |
| TObjArray | fLeaves |
| -> List of leaves of this branch | |
| Int_t | fMaxBaskets |
| Maximum number of Baskets so far. | |
| TBranch * | fMother |
| ! Pointer to top-level parent branch in the tree. | |
| Int_t | fNBaskets |
| ! Number of baskets in memory | |
| Long64_t | fNextBasketEntry |
| ! Next entry that will requires us to go to the next basket | |
| Int_t | fNleaves |
| ! Number of leaves | |
| Int_t | fOffset |
| Offset of this branch. | |
| TBranch * | fParent |
| ! Pointer to parent branch. | |
| Int_t | fReadBasket |
| ! Current basket number when reading | |
| Long64_t | fReadEntry |
| ! Current entry number when reading | |
| ReadLeaves_t | fReadLeaves |
| ! Pointer to the ReadLeaves implementation to use. | |
| bool | fSkipZip |
| ! After being read, the buffer will not be unzipped. | |
| Int_t | fSplitLevel |
| Branch split level. | |
| Long64_t | fTotBytes |
| Total number of bytes in all leaves before compression. | |
| TBuffer * | fTransientBuffer |
| ! Pointer to the current transient buffer. | |
| TTree * | fTree |
| ! Pointer to Tree header | |
| Int_t | fWriteBasket |
| Last basket number written. | |
| Long64_t | fZipBytes |
| Total number of bytes in all leaves after compression. | |
| Protected Attributes inherited from TNamed | |
| TString | fName |
| TString | fTitle |
| Protected Attributes inherited from TAttFill | |
| Color_t | fFillColor |
| Fill area color. | |
| Style_t | fFillStyle |
| Fill area style. | |
Static Protected Attributes | |
| static Int_t | fgCount = 0 |
| ! branch counter | |
Private Types | |
| using | TIOFeatures = ROOT::TIOFeatures |
Private Member Functions | |
| TBranch (const TBranch &)=delete | |
| Int_t | FillEntryBuffer (TBasket *basket, TBuffer *buf, Int_t &lnew) |
| Copy the data from fEntryBuffer into the current basket. | |
| Int_t | GetBasketAndFirst (TBasket *&basket, Long64_t &first, TBuffer *user_buffer) |
| A helper function to locate the correct basket - and its first entry. | |
| TBasket * | GetBasketImpl (Int_t basket, TBuffer *user_buffer) |
| Return pointer to basket basketnumber in this Branch. | |
| Int_t | GetBulkEntries (Long64_t, TBuffer &) |
| Read a basket of events into the given buffer with byte swapping. | |
| Int_t | GetEntriesSerialized (Long64_t N, TBuffer &user_buf) |
| Int_t | GetEntriesSerialized (Long64_t, TBuffer &, TBuffer *) |
| Read a basket of events into the given buffer without byte swapping. | |
| TBranch & | operator= (const TBranch &)=delete |
| Int_t | WriteBasketImpl (TBasket *basket, Int_t where, ROOT::Internal::TBranchIMTHelper *) |
| Write the current basket to disk and return the number of bytes written to the file. | |
Friends | |
| class | ROOT::Experimental::Internal::TBulkBranchRead |
| class | TBranchElement |
| class | TTree |
| class | TTreeCache |
| class | TTreeCloner |
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 )) } |
#include <TBranch.h>
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TBranch status bits.
| Enumerator | |
|---|---|
| kDoNotProcess | Active bit for branches. |
| kIsClone | To indicate a TBranchClones. |
| kBranchObject | Branch is a TObject*. |
| kBranchAny | Branch is an object*. |
| kAutoDelete | |
| kDoNotUseBufferMap | If set, at least one of the entry in the branch will use the buffer's map of classname and objects. |
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| TBranch::TBranch | ( | ) |
Default constructor. Used for I/O by default.
Definition at line 87 of file TBranch.cxx.
| TBranch::TBranch | ( | TTree * | tree, |
| const char * | name, | ||
| void * | address, | ||
| const char * | leaflist, | ||
| Int_t | basketsize = 32000, |
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| Int_t | compress = ROOT::RCompressionSetting::EAlgorithm::kInherit |
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Create a Branch as a child of a Tree.
leaflist is the concatenation of all the variable names and types separated by a colon character : The variable name and the variable type are separated by a slash (/). The variable type must be 1 character. (Characters after the first are legal and will be appended to the visible name of the leaf, but have no effect.) If no type is given, the type of the variable is assumed to be the same as the previous variable. If the first variable does not have a type, it is assumed of type F by default. The list of currently supported types is given below:
C : a character string terminated by the 0 characterB : an 8 bit signed integer (Char_t); Treated as a character when in an array.b : an 8 bit unsigned integer (UChar_t)S : a 16 bit signed integer (Short_t)s : a 16 bit unsigned integer (UShort_t)I : a 32 bit signed integer (Int_t)i : a 32 bit unsigned integer (UInt_t)F : a 32 bit floating point (Float_t)f : a 24 bit floating point with truncated mantissa (Float16_t)D : a 64 bit floating point (Double_t)d : a 24 bit truncated floating point (Double32_t)L : a 64 bit signed integer (Long64_t)l : a 64 bit unsigned integer (ULong64_t)G : a long signed integer (Long_t, which sizeof is platform dependent), stored as a 64 bit integer but usually held in memory as a 64 bit integer on 64 bit machines and 32 bit on 32 bit machines. Due to this difference, this data type is not cross-platform.g : a long unsigned integer (ULong_t, which sizeof is platform dependent), stored as a 64 bit unsigned integer but held in memory usually as a 64 bit integer on 64 bit machines and 32 bit on 32 bit machines. Due to this difference, this data type is not cross-platform.O : [the letter o, not a zero] a boolean (bool)Arrays of values are supported with the following syntax:
TStreamerElement::GetRange() for further information.Note that the TTree will assume that all the item are contiguous in memory. On some platform, this is not always true of the member of a struct or a class, due to padding and alignment. Sorting your data member in order of decreasing sizeof usually leads to their being contiguous in memory.
See an example of a Branch definition in the TTree constructor.
Note that in case the data type is an object, this branch can contain only this object.
Note that this function is invoked by TTree::Branch
Definition at line 199 of file TBranch.cxx.
| TBranch::TBranch | ( | TBranch * | parent, |
| const char * | name, | ||
| void * | address, | ||
| const char * | leaflist, | ||
| Int_t | basketsize = 32000, |
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| Int_t | compress = ROOT::RCompressionSetting::EAlgorithm::kInherit |
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| ) |
Create a Branch as a child of another Branch.
See documentation for TBranch::TBranch(TTree *, const char *, void *, const char *, Int_t, Int_t)
Definition at line 252 of file TBranch.cxx.
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Destructor.
Definition at line 450 of file TBranch.cxx.
Add the basket to this branch.
Warning: if the basket are not 'flushed/copied' in the same order as they were created, this will induce a slow down in the insert (since we'll need to move all the record that are entere 'too early'). Warning we also assume that the current write basket is not present (aka has been removed) or is empty (no entries).
Definition at line 545 of file TBranch.cxx.
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Add the start entry of the write basket (not yet created)
Definition at line 618 of file TBranch.cxx.
| Int_t TBranch::BackFill | ( | ) |
Loop on all leaves of this branch to back fill Basket buffer.
Use this routine instead of TBranch::Fill when filling a branch individually to catch up with the number of entries already in the TTree.
First it calls TBranch::Fill and then if the number of entries of the branch reach one of TTree cluster's boundary, the basket is flushed.
The function returns the number of bytes committed to the memory basket. If a write error occurs, the number of bytes returned is -1. If no data are written, because e.g. the branch is disabled, the number of bytes returned is 0.
To insure that the baskets of each cluster are located close by in the file, when back-filling multiple branches make sure to call BackFill for the same entry for all the branches consecutively
rather than doing all the entries of one branch at a time.
Definition at line 680 of file TBranch.cxx.
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Browser interface.
Reimplemented from TObject.
Reimplemented in THbookBranch, TBranchClones, TBranchElement, TBranchObject, and TBranchSTL.
Definition at line 699 of file TBranch.cxx.
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Loop on all branch baskets.
If the file where branch buffers reside is writable, free the disk space associated to the baskets of the branch, then call Reset(). If the option contains "all", delete also the baskets for the subbranches. The branch is reset.
NOTE that this function must be used with extreme care. Deleting branch baskets fragments the file and may introduce inefficiencies when adding new entries in the Tree or later on when reading the Tree.
Definition at line 726 of file TBranch.cxx.
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Loop on all branch baskets.
Drop all baskets from memory except readbasket. If the option contains "all", drop all baskets including read- and write-baskets (unless they are not stored individually on disk). The option "all" also lead to DropBaskets being called on the sub-branches.
Definition at line 757 of file TBranch.cxx.
| void TBranch::ExpandBasketArrays | ( | ) |
Increase BasketEntry buffer of a minimum of 10 locations and a maximum of 50 per cent of current size.
Definition at line 825 of file TBranch.cxx.
Copy the data from fEntryBuffer into the current basket.
Definition at line 935 of file TBranch.cxx.
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Loop on all leaves of this branch to fill Basket buffer.
If TBranchIMTHelper is non-null and it is time to WriteBasket, then we will use TBB to compress in parallel.
The function returns the number of bytes committed to the memory basket. If a write error occurs, the number of bytes returned is -1. If no data are written, because e.g. the branch is disabled, the number of bytes returned is 0.
Reimplemented in TBranchClones, TBranchElement, TBranchObject, TBranchRef, and TBranchSTL.
Definition at line 856 of file TBranch.cxx.
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Loop on all leaves of this branch to fill Basket buffer.
Definition at line 2496 of file TBranch.cxx.
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Find the immediate sub-branch with passed name.
Reimplemented in TBranchElement.
Definition at line 1035 of file TBranch.cxx.
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Find the leaf corresponding to the name 'searchname'.
Reimplemented in TBranchElement.
Definition at line 1081 of file TBranch.cxx.
| Int_t TBranch::FlushBaskets | ( | ) |
Flush to disk all the baskets of this branch and any of subbranches.
Return the number of bytes written or -1 in case of write error.
Definition at line 1136 of file TBranch.cxx.
If we have a write basket in memory and it contains some entries and has not yet been written to disk, we write it and delete it from memory.
Return the number of bytes written;
Definition at line 1182 of file TBranch.cxx.
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Reimplemented in TBranchElement.
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A helper function to locate the correct basket - and its first entry.
Extracted to a common private function because it is needed by both GetEntry and GetBulkEntries. It should not be called directly.
If a new basket must be constructed and the user_buffer is provided, then the user_buffer will back the memory of the newly-constructed basket.
Assumes that this branch is enabled.
Returns -1 if the entry does not exist Returns -2 in case of error Returns the index of the basket in case of success.
Definition at line 1353 of file TBranch.cxx.
Return pointer to basket basketnumber in this Branch.
If a new buffer must be created and the user_buffer argument is non-null, then the memory in the user_buffer will be shared with the returned TBasket.
Definition at line 1226 of file TBranch.cxx.
Return address of basket in the file.
Definition at line 1302 of file TBranch.cxx.
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Returns (and, if 0, creates) browsable objects for this branch See TVirtualBranchBrowsable::FillListOfBrowsables.
Definition at line 1312 of file TBranch.cxx.
Read a basket of events into the given buffer with byte swapping.
On success, the caller should be able to access the contents of buf as they are with:
where T is the type stored on this branch.
When count_buf points to a valid TBuffer and the branch has a branch count, count_buf will be filled (via a call to GetEntriesSerialized) with the data from the branchCount. After deserialization those value can be used to calculate the number of elements corresponding to each entries.
For each entry the number of elements is the multiplication of
and the value in the BranchCount corresponding to that entry (can be obtained from branch->GetBranchCount()).
Definition at line 1472 of file TBranch.cxx.
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Return the name of the user class whose content is stored in this branch, if any.
If this branch was created using the 'leaflist' technique, this function returns an empty string.
Reimplemented in TBranchClones, TBranchElement, TBranchObject, and TBranchSTL.
Definition at line 1324 of file TBranch.cxx.
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Read a basket of events into the given buffer without byte swapping.
On success, the caller still need to deserialize the content. For example for a scalar branch and N the return value (i.e. number of entries)
where target is a pointer or array to the type stored on this branch.
When count_buf points to a valid TBuffer and the branch has a branch count, count_buf will be filled (via a call to GetEntriesSerialized()) with the data from the branchCount. After deserialization those value can be used to calculate the number of elements corresponding to each entries.
For each entry the number of elements is the multiplication of
and the value in the BranchCount corresponding to that entry (can be obtained from branch->GetBranchCount()).
Definition at line 1586 of file TBranch.cxx.
Read all leaves of entry and return total number of bytes read.
The input argument "entry" is the entry number in the current tree. In case of a TChain, the entry number in the current Tree must be found before calling this function. For example:
The function returns the number of bytes read from the input buffer. If entry does not exist, the function returns 0. If an I/O error occurs, the function returns -1.
See IMPORTANT REMARKS in TTree::GetEntry.
Reimplemented in THbookBranch, TBranchClones, TBranchElement, TBranchObject, and TBranchSTL.
Definition at line 1706 of file TBranch.cxx.
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Read all leaves of an entry and export buffers to real objects in a TClonesArray list.
Returns total number of bytes read.
Definition at line 1762 of file TBranch.cxx.
Fill expectedClass and expectedType with information on the data type of the object/values contained in this branch (and thus the type of pointers expected to be passed to Set[Branch]Address return 0 in case of success and > 0 in case of failure.
Reimplemented in TBranchElement, TBranchObject, and TBranchSTL.
Definition at line 1834 of file TBranch.cxx.
Return pointer to the file where branch buffers reside, returns 0 in case branch buffers reside in the same file as tree header.
If mode is 1 the branch buffer file is recreated.
Definition at line 1853 of file TBranch.cxx.
Return a fresh basket by either reusing an existing basket that needs to be drop (according to TTree::MemoryFull) or create a new one.
If the user_buffer argument is non-null, then the memory in the user-provided buffer will be utilized by the underlying basket.
The basket number is used to estimate the required buffer size and try to optimize memory usage and number of memory allocation.
Definition at line 1894 of file TBranch.cxx.
Drops the cluster two behind the current cluster and returns a fresh basket by either reusing or creating a new one.
Definition at line 1953 of file TBranch.cxx.
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Return the 'full' name of the branch.
In particular prefix the mother's name when it does not end in a trailing dot and thus is not part of the branch name
Reimplemented in TBranchElement.
Definition at line 2031 of file TBranch.cxx.
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Return icon name depending on type of branch.
Reimplemented from TObject.
Reimplemented in TBranchElement.
Definition at line 1332 of file TBranch.cxx.
| ROOT::TIOFeatures TBranch::GetIOFeatures | ( | ) | const |
Returns the IO settings currently in use for this branch.
Definition at line 2255 of file TBranch.cxx.
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Return pointer to the 1st Leaf named name in thisBranch.
Definition at line 2055 of file TBranch.cxx.
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Return whether this branch is in a mode where the object are decomposed or not (Also known as MakeClass mode).
Reimplemented in TBranchElement.
Definition at line 2117 of file TBranch.cxx.
| TBranch * TBranch::GetMother | ( | ) | const |
Get our top-level parent branch in the tree.
Definition at line 2127 of file TBranch.cxx.
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Get real file name.
Definition at line 2068 of file TBranch.cxx.
Return all elements of one row unpacked in internal array fValues [Actually just returns 1 (?)].
Definition at line 2108 of file TBranch.cxx.
Find the parent branch of child.
Return 0 if child is not in this branch hierarchy.
Definition at line 2164 of file TBranch.cxx.
Return total number of bytes in the branch (including current buffer)
Definition at line 2201 of file TBranch.cxx.
Return total number of bytes in the branch (excluding current buffer) if option ="*" includes all sub-branches of this branch too.
Definition at line 2220 of file TBranch.cxx.
Returns the transient buffer currently used by this TBranch for reading/writing baskets.
Definition at line 523 of file TBranch.cxx.
Return total number of zip bytes in the branch if option ="*" includes all sub-branches of this branch too.
Definition at line 2238 of file TBranch.cxx.
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Definition at line 300 of file TBranch.cxx.
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Reimplemented from TObject.
Reimplemented in THbookBranch, TBranchClones, TBranchElement, TBranchObject, TBranchRef, and TBranchSTL.
| bool TBranch::IsAutoDelete | ( | ) | const |
Return true if an existing object in a TBranchObject must be deleted.
Definition at line 2263 of file TBranch.cxx.
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Return true if more than one leaf or browsables, false otherwise.
Reimplemented from TObject.
Reimplemented in TBranchClones, TBranchElement, TBranchObject, and TBranchSTL.
Definition at line 2271 of file TBranch.cxx.
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keep a maximum of fMaxEntries in memory
Definition at line 2283 of file TBranch.cxx.
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Baskets associated to this branch are forced to be in memory.
You can call TTree::SetMaxVirtualSize(maxmemory) to instruct the system that the total size of the imported baskets does not exceed maxmemory bytes.
The function returns the number of baskets that have been put in memory. This method may be called to force all baskets of one or more branches in memory when random access to entries in this branch is required. See also TTree::LoadBaskets to load all baskets of all branches in memory.
Definition at line 2309 of file TBranch.cxx.
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Print TBranch parameters.
If options contains "basketsInfo" print the entry number, location and size of each baskets.
Reimplemented from TObject.
Reimplemented in TBranchSTL, TBranchClones, TBranchElement, TBranchObject, and TBranchRef.
Definition at line 2341 of file TBranch.cxx.
| void TBranch::PrintCacheInfo | ( | ) | const |
Print the information we have about which basket is currently cached and whether they have been 'used'/'read' from the cache.
Definition at line 2445 of file TBranch.cxx.
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Loop on all leaves of this branch to read Basket buffer.
Definition at line 2453 of file TBranch.cxx.
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Read zero leaves without the overhead of a loop.
Definition at line 2472 of file TBranch.cxx.
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Read one leaf without the overhead of a loop.
Definition at line 2479 of file TBranch.cxx.
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Read two leaves without the overhead of a loop.
Definition at line 2487 of file TBranch.cxx.
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Loop on all leaves of this branch to read Basket buffer.
Definition at line 2461 of file TBranch.cxx.
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Refresh this branch using new information in b This function is called by TTree::Refresh.
Definition at line 2508 of file TBranch.cxx.
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Reset a Branch.
Reimplemented in TBranchClones, TBranchElement, TBranchObject, and TBranchRef.
Definition at line 2557 of file TBranch.cxx.
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Reset the address of the branch.
Reimplemented in TBranchElement.
Definition at line 2651 of file TBranch.cxx.
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Reset a Branch.
Reimplemented in TBranchClones, TBranchElement, TBranchObject, and TBranchRef.
Definition at line 2598 of file TBranch.cxx.
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Static function resetting fgCount.
Definition at line 2674 of file TBranch.cxx.
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Set address of this branch.
Reimplemented in TBranchClones, THbookBranch, TBranchElement, TBranchObject, and TBranchSTL.
Definition at line 2682 of file TBranch.cxx.
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Reimplemented in TBranchElement.
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Set the automatic delete bit.
This bit is used by TBranchObject::ReadBasket to decide if an object referenced by a TBranchObject must be deleted or not before reading a new entry.
If autodel is true, this existing object will be deleted, a new object created by the default constructor, then read from disk by the streamer.
If autodel is false, the existing object is not deleted. Root assumes that the user is taking care of deleting any internal object or array (this can be done in the streamer).
Reimplemented in TBranchObject.
Definition at line 2716 of file TBranch.cxx.
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Set the basket size The function makes sure that the basket size is greater than fEntryOffsetlen.
Reimplemented in TBranchClones, TBranchElement, and TBranchObject.
Definition at line 2729 of file TBranch.cxx.
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Set address of this branch directly from a TBuffer to avoid streaming.
Note: We do not take ownership of the buffer.
Definition at line 2745 of file TBranch.cxx.
| void TBranch::SetCompressionAlgorithm | ( | Int_t | algorithm = ROOT::RCompressionSetting::EAlgorithm::kUseGlobal | ) |
Set compression algorithm.
Definition at line 2763 of file TBranch.cxx.
| void TBranch::SetCompressionLevel | ( | Int_t | level = ROOT::RCompressionSetting::ELevel::kUseMin | ) |
Set compression level.
Definition at line 2783 of file TBranch.cxx.
| void TBranch::SetCompressionSettings | ( | Int_t | settings = ROOT::RCompressionSetting::EDefaults::kUseCompiledDefault | ) |
Set compression settings.
Definition at line 2805 of file TBranch.cxx.
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Set the number of entries in this branch.
Reimplemented in THbookBranch.
Definition at line 2838 of file TBranch.cxx.
Update the default value for the branch's fEntryOffsetLen if and only if it was already non zero (and the new value is not zero) If updateExisting is true, also update all the existing branches.
Definition at line 2821 of file TBranch.cxx.
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Set file where this branch writes/reads its buffers.
By default the branch buffers reside in the file where the Tree was created. If the file name where the tree was created is an absolute path name or an URL (e.g. root://host/...) and if the fname is not an absolute path name or an URL then the path of the tree file is prepended to fname to make the branch file relative to the tree file. In this case one can move the tree + all branch files to a different location in the file system and still access the branch files. The ROOT file will be connected only when necessary. If called by TBranch::Fill (via TBasket::WriteFile), the file will be created with the option "recreate". If called by TBranch::GetEntry (via TBranch::GetBasket), the file will be opened in read mode. To open a file in "update" mode or with a certain compression level, use TBranch::SetFile(TFile *file).
Definition at line 2908 of file TBranch.cxx.
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Set file where this branch writes/reads its buffers.
By default the branch buffers reside in the file where the Tree was created. If the file name where the tree was created is an absolute path name or an URL (e.g. or root://host/...) and if the fname is not an absolute path name or an URL then the path of the tree file is prepended to fname to make the branch file relative to the tree file. In this case one can move the tree + all branch files to a different location in the file system and still access the branch files. The ROOT file will be connected only when necessary. If called by TBranch::Fill (via TBasket::WriteFile), the file will be created with the option "recreate". If called by TBranch::GetEntry (via TBranch::GetBasket), the file will be opened in read mode. To open a file in "update" mode or with a certain compression level, use TBranch::SetFile(TFile *file).
Definition at line 2863 of file TBranch.cxx.
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set the first entry number (case of TBranchSTL)
Definition at line 3279 of file TBranch.cxx.
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Set the branch in a mode where the object are decomposed (Also known as MakeClass mode).
Return whether the setting was possible (it is not possible for TBranch and TBranchObject).
Reimplemented in TBranchElement.
Definition at line 2927 of file TBranch.cxx.
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Set object this branch is pointing to.
Reimplemented in TBranchElement.
Definition at line 2936 of file TBranch.cxx.
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Reimplemented in TBranchElement.
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Set branch status to Process or DoNotProcess.
Definition at line 2947 of file TBranch.cxx.
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Reimplemented in TBranchClones.
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If the branch address is not set, we set all addresses starting with the top level parent branch.
Reimplemented in TBranchElement, and TBranchObject.
Definition at line 3294 of file TBranch.cxx.
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Stream a class object.
Reimplemented from TObject.
Reimplemented in THbookBranch, TBranchClones, TBranchElement, TBranchObject, TBranchRef, and TBranchSTL.
Definition at line 2956 of file TBranch.cxx.
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| bool TBranch::SupportsBulkRead | ( | ) | const |
Returns true if this branch supports bulk IO, false otherwise.
This will return true if all the various preconditions necessary hold true to perform bulk IO (reasonable type, single TLeaf, etc); the bulk IO may still fail, depending on the contents of the individual TBaskets loaded.
Definition at line 1431 of file TBranch.cxx.
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Reimplemented in TBranchObject.
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Refresh the value of fDirectory (i.e.
where this branch writes/reads its buffers) with the current value of fTree->GetCurrentFile unless this branch has been redirected to a different file. Also update the sub-branches.
Reimplemented in TBranchClones, and TBranchElement.
Definition at line 3304 of file TBranch.cxx.
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Write the current basket to disk and return the number of bytes written to the file.
Definition at line 3202 of file TBranch.cxx.
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protected |
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protected |
|
protected |
|
protected |
