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Reference Guide
TFPBlock Class Reference

This class represents the encapsulation of a block request. It contains the chunks to be prefetched and also serves as a container for the information read. These blocks are prefetch in a special reader thread by the TFilePrefetch class.

Definition at line 22 of file TFPBlock.h.

Public Member Functions

 TFPBlock (Long64_t *, Int_t *, Int_t)
 Constructor. More...
 
virtual ~TFPBlock ()
 Destructor. More...
 
char * GetBuffer () const
 Get block buffer. More...
 
Long64_t GetCapacity () const
 Return capacity of the block. More...
 
Long64_t GetDataSize () const
 Return size of the data in the block. More...
 
Int_tGetLen () const
 Get pointer to the array of lengths. More...
 
Int_t GetLen (Int_t) const
 Get length of the element at index i. More...
 
Int_t GetNoElem () const
 Return number of elements in the block. More...
 
Long64_tGetPos () const
 Get pointer to the array of postions. More...
 
Long64_t GetPos (Int_t) const
 Get position of the element at index i. More...
 
char * GetPtrToPiece (Int_t index) const
 Get block buffer. More...
 
void ReallocBlock (Long64_t *, Int_t *, Int_t)
 Reallocate the block's buffer based on the length of the elements it will contain. More...
 
void SetBuffer (char *)
 Set block buffer. More...
 
void SetPos (Int_t, Long64_t)
 Set pos value for index idx. More...
 
- Public Member Functions inherited from TObject
 TObject ()
 TObject constructor. More...
 
 TObject (const TObject &object)
 TObject copy ctor. More...
 
virtual ~TObject ()
 TObject destructor. More...
 
void AbstractMethod (const char *method) const
 Use this method to implement an "abstract" method that you don't want to leave purely abstract. More...
 
virtual void AppendPad (Option_t *option="")
 Append graphics object to current pad. More...
 
virtual void Browse (TBrowser *b)
 Browse object. May be overridden for another default action. More...
 
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. More...
 
virtual const char * ClassName () const
 Returns name of class to which the object belongs. More...
 
virtual void Clear (Option_t *="")
 
virtual TObjectClone (const char *newname="") const
 Make a clone of an object using the Streamer facility. More...
 
virtual Int_t Compare (const TObject *obj) const
 Compare abstract method. More...
 
virtual void Copy (TObject &object) const
 Copy this to obj. More...
 
virtual void Delete (Option_t *option="")
 Delete this object. More...
 
virtual Int_t DistancetoPrimitive (Int_t px, Int_t py)
 Computes distance from point (px,py) to the object. More...
 
virtual void Draw (Option_t *option="")
 Default Draw method for all objects. More...
 
virtual void DrawClass () const
 Draw class inheritance tree of the class to which this object belongs. More...
 
virtual TObjectDrawClone (Option_t *option="") const
 Draw a clone of this object in the current selected pad for instance with: gROOT->SetSelectedPad(gPad). More...
 
virtual void Dump () const
 Dump contents of object on stdout. More...
 
virtual void Error (const char *method, const char *msgfmt,...) const
 Issue error message. More...
 
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. More...
 
virtual void Execute (TMethod *method, TObjArray *params, Int_t *error=0)
 Execute method on this object with parameters stored in the TObjArray. More...
 
virtual void ExecuteEvent (Int_t event, Int_t px, Int_t py)
 Execute action corresponding to an event at (px,py). More...
 
virtual void Fatal (const char *method, const char *msgfmt,...) const
 Issue fatal error message. More...
 
virtual TObjectFindObject (const char *name) const
 Must be redefined in derived classes. More...
 
virtual TObjectFindObject (const TObject *obj) const
 Must be redefined in derived classes. More...
 
virtual Option_tGetDrawOption () const
 Get option used by the graphics system to draw this object. More...
 
virtual const char * GetIconName () const
 Returns mime type name of object. More...
 
virtual const char * GetName () const
 Returns name of object. More...
 
virtual char * GetObjectInfo (Int_t px, Int_t py) const
 Returns string containing info about the object at position (px,py). More...
 
virtual Option_tGetOption () const
 
virtual const char * GetTitle () const
 Returns title of object. More...
 
virtual UInt_t GetUniqueID () const
 Return the unique object id. More...
 
virtual Bool_t HandleTimer (TTimer *timer)
 Execute action in response of a timer timing out. More...
 
virtual ULong_t Hash () const
 Return hash value for this object. More...
 
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. More...
 
virtual void Info (const char *method, const char *msgfmt,...) const
 Issue info message. More...
 
virtual Bool_t InheritsFrom (const char *classname) const
 Returns kTRUE if object inherits from class "classname". More...
 
virtual Bool_t InheritsFrom (const TClass *cl) const
 Returns kTRUE if object inherits from TClass cl. More...
 
virtual void Inspect () const
 Dump contents of this object in a graphics canvas. More...
 
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). More...
 
virtual Bool_t IsFolder () const
 Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More...
 
R__ALWAYS_INLINE Bool_t IsOnHeap () const
 
virtual Bool_t IsSortable () const
 
R__ALWAYS_INLINE Bool_t IsZombie () const
 
virtual void ls (Option_t *option="") const
 The ls function lists the contents of a class on stdout. More...
 
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). More...
 
virtual Bool_t Notify ()
 This method must be overridden to handle object notification. More...
 
void Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const
 Use this method to declare a method obsolete. More...
 
void operator delete (void *ptr)
 Operator delete. More...
 
void operator delete[] (void *ptr)
 Operator delete []. More...
 
voidoperator new (size_t sz)
 
voidoperator new (size_t sz, void *vp)
 
voidoperator new[] (size_t sz)
 
voidoperator new[] (size_t sz, void *vp)
 
TObjectoperator= (const TObject &rhs)
 TObject assignment operator. More...
 
virtual void Paint (Option_t *option="")
 This method must be overridden if a class wants to paint itself. More...
 
virtual void Pop ()
 Pop on object drawn in a pad to the top of the display list. More...
 
virtual void Print (Option_t *option="") const
 This method must be overridden when a class wants to print itself. More...
 
virtual Int_t Read (const char *name)
 Read contents of object with specified name from the current directory. More...
 
virtual void RecursiveRemove (TObject *obj)
 Recursively remove this object from a list. More...
 
void ResetBit (UInt_t f)
 
virtual void SaveAs (const char *filename="", Option_t *option="") const
 Save this object in the file specified by filename. More...
 
virtual void SavePrimitive (std::ostream &out, Option_t *option="")
 Save a primitive as a C++ statement(s) on output stream "out". More...
 
void SetBit (UInt_t f)
 
void SetBit (UInt_t f, Bool_t set)
 Set or unset the user status bits as specified in f. More...
 
virtual void SetDrawOption (Option_t *option="")
 Set drawing option for object. More...
 
virtual void SetUniqueID (UInt_t uid)
 Set the unique object id. More...
 
virtual void SysError (const char *method, const char *msgfmt,...) const
 Issue system error message. More...
 
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. More...
 
virtual void Warning (const char *method, const char *msgfmt,...) const
 Issue warning message. More...
 
virtual Int_t Write (const char *name=0, Int_t option=0, Int_t bufsize=0)
 Write this object to the current directory. More...
 
virtual Int_t Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const
 Write this object to the current directory. More...
 

Private Member Functions

 TFPBlock (const TFPBlock &)=delete
 
TFPBlockoperator= (const TFPBlock &)=delete
 

Private Attributes

char * fBuffer
 Content of the block. More...
 
Long64_t fCapacity
 Capacity of the buffer. More...
 
Long64_t fDataSize
 Total size of useful data in the block. More...
 
Int_tfLen
 Array of lengths of each segment. More...
 
Int_t fNblock
 Number of segment in the block. More...
 
Long64_tfPos
 Array of positions of each segment. More...
 
Long64_tfRelOffset
 Relative offset of piece in the buffer. More...
 

Additional Inherited Members

- 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)
}
 
- Static Public Member Functions inherited from TObject
static Long_t GetDtorOnly ()
 Return destructor only flag. More...
 
static Bool_t GetObjectStat ()
 Get status of object stat flag. More...
 
static void SetDtorOnly (void *obj)
 Set destructor only flag. More...
 
static void SetObjectStat (Bool_t stat)
 Turn on/off tracking of objects in the TObjectTable. More...
 
- 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). More...
 
void MakeZombie ()
 

#include <TFPBlock.h>

Inheritance diagram for TFPBlock:
[legend]

Constructor & Destructor Documentation

◆ TFPBlock() [1/2]

TFPBlock::TFPBlock ( const TFPBlock )
privatedelete

◆ TFPBlock() [2/2]

TFPBlock::TFPBlock ( Long64_t offset,
Int_t length,
Int_t  nb 
)

Constructor.

Definition at line 36 of file TFPBlock.cxx.

◆ ~TFPBlock()

TFPBlock::~TFPBlock ( )
virtual

Destructor.

Definition at line 60 of file TFPBlock.cxx.

Member Function Documentation

◆ GetBuffer()

char * TFPBlock::GetBuffer ( ) const
inline

Get block buffer.

Definition at line 103 of file TFPBlock.h.

◆ GetCapacity()

Long64_t TFPBlock::GetCapacity ( ) const
inline

Return capacity of the block.

Definition at line 79 of file TFPBlock.h.

◆ GetDataSize()

Long64_t TFPBlock::GetDataSize ( ) const
inline

Return size of the data in the block.

Definition at line 73 of file TFPBlock.h.

◆ GetLen() [1/2]

Int_t * TFPBlock::GetLen ( ) const
inline

Get pointer to the array of lengths.

Definition at line 66 of file TFPBlock.h.

◆ GetLen() [2/2]

Int_t TFPBlock::GetLen ( Int_t  i) const
inline

Get length of the element at index i.

Definition at line 97 of file TFPBlock.h.

◆ GetNoElem()

Int_t TFPBlock::GetNoElem ( ) const
inline

Return number of elements in the block.

Definition at line 85 of file TFPBlock.h.

◆ GetPos() [1/2]

Long64_t * TFPBlock::GetPos ( ) const
inline

Get pointer to the array of postions.

Definition at line 60 of file TFPBlock.h.

◆ GetPos() [2/2]

Long64_t TFPBlock::GetPos ( Int_t  i) const
inline

Get position of the element at index i.

Definition at line 91 of file TFPBlock.h.

◆ GetPtrToPiece()

char * TFPBlock::GetPtrToPiece ( Int_t  index) const
inline

Get block buffer.

Definition at line 109 of file TFPBlock.h.

◆ operator=()

TFPBlock& TFPBlock::operator= ( const TFPBlock )
privatedelete

◆ ReallocBlock()

void TFPBlock::ReallocBlock ( Long64_t offset,
Int_t length,
Int_t  nb 
)

Reallocate the block's buffer based on the length of the elements it will contain.

Definition at line 94 of file TFPBlock.cxx.

◆ SetBuffer()

void TFPBlock::SetBuffer ( char *  buf)

Set block buffer.

Definition at line 81 of file TFPBlock.cxx.

◆ SetPos()

void TFPBlock::SetPos ( Int_t  idx,
Long64_t  value 
)

Set pos value for index idx.

Definition at line 72 of file TFPBlock.cxx.

Member Data Documentation

◆ fBuffer

char* TFPBlock::fBuffer
private

Content of the block.

Definition at line 25 of file TFPBlock.h.

◆ fCapacity

Long64_t TFPBlock::fCapacity
private

Capacity of the buffer.

Definition at line 28 of file TFPBlock.h.

◆ fDataSize

Long64_t TFPBlock::fDataSize
private

Total size of useful data in the block.

Definition at line 27 of file TFPBlock.h.

◆ fLen

Int_t* TFPBlock::fLen
private

Array of lengths of each segment.

Definition at line 29 of file TFPBlock.h.

◆ fNblock

Int_t TFPBlock::fNblock
private

Number of segment in the block.

Definition at line 26 of file TFPBlock.h.

◆ fPos

Long64_t* TFPBlock::fPos
private

Array of positions of each segment.

Definition at line 30 of file TFPBlock.h.

◆ fRelOffset

Long64_t* TFPBlock::fRelOffset
private

Relative offset of piece in the buffer.

Definition at line 31 of file TFPBlock.h.

Libraries for TFPBlock:
[legend]

The documentation for this class was generated from the following files: