/usr/include/root/TFPBlock.h is in libroot-io-dev 5.34.14-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Author: Elvin Sindrilaru 19/05/2011
/*************************************************************************
* Copyright (C) 1995-2011, Rene Brun and Fons Rademakers. *
* All rights reserved. *
* *
* For the licensing terms see $ROOTSYS/LICENSE. *
* For the list of contributors see $ROOTSYS/README/CREDITS. *
*************************************************************************/
#ifndef ROOT_TFPBlock
#define ROOT_TFPBlock
//////////////////////////////////////////////////////////////////////////
// //
// TFPBlock //
// //
// 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. //
// //
//////////////////////////////////////////////////////////////////////////
#ifndef ROOT_TObject
#include "TObject.h"
#endif
class TFPBlock : public TObject{
private:
char *fBuffer; // content of the block
Int_t fNblock; // number of segment in the block
Long64_t fDataSize; // total size of useful data in the block
Long64_t fCapacity; // capacity of the buffer
Int_t *fLen; // array of lengths of each segment
Long64_t *fPos; // array of positions of each segment
Long64_t *fRelOffset; // relative offset of piece in the buffer
TFPBlock(const TFPBlock&); // Not implemented.
TFPBlock &operator=(const TFPBlock&); // Not implemented.
public:
TFPBlock(Long64_t*, Int_t*, Int_t);
virtual ~TFPBlock();
Long64_t GetPos(Int_t) const;
Int_t GetLen(Int_t) const;
Long64_t *GetPos() const;
Int_t *GetLen() const;
Long64_t GetDataSize() const;
Long64_t GetCapacity() const;
Int_t GetNoElem() const;
char *GetBuffer() const;
char *GetPtrToPiece(Int_t index) const;
void SetBuffer(char*);
void SetPos(Int_t, Long64_t);
void ReallocBlock(Long64_t*, Int_t*, Int_t);
ClassDef(TFPBlock, 0); // File prefetch block
};
//__________________________________________________________________
inline Long64_t* TFPBlock::GetPos() const
{
// Get pointer to the array of postions.
return fPos;
}
//__________________________________________________________________
inline Int_t* TFPBlock::GetLen() const
{
// Get pointer to the array of lengths.
return fLen;
}
//__________________________________________________________________
inline Long64_t TFPBlock::GetDataSize() const
{
// Return size of the data in the block.
return fDataSize;
}
//__________________________________________________________________
inline Long64_t TFPBlock::GetCapacity() const
{
// Return capacity of the block.
return fCapacity;
}
//__________________________________________________________________
inline Int_t TFPBlock::GetNoElem() const
{
// Return number of elements in the block.
return fNblock;
}
//__________________________________________________________________
inline Long64_t TFPBlock::GetPos(Int_t i) const
{
// Get position of the element at index i.
return fPos[i];
}
//__________________________________________________________________
inline Int_t TFPBlock::GetLen(Int_t i) const
{
// Get length of the element at index i.
return fLen[i];
}
//__________________________________________________________________
inline char* TFPBlock::GetBuffer() const
{
// Get block buffer.
return fBuffer;
}
//__________________________________________________________________
inline char* TFPBlock::GetPtrToPiece(Int_t index) const
{
// Get block buffer.
return (fBuffer + fRelOffset[index]);
}
#endif
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