ROOT::Experimental::Internal::RNTupleFileWriter::RFileSimple Struct Reference

Definition at line 147 of file RMiniFile.hxx.

Public Member Functions
	RFileSimple ()=default
	RFileSimple (const RFileSimple &other)=delete
	RFileSimple (RFileSimple &&other)=delete
	~RFileSimple ()
	operator bool () const
RFileSimple &	operator= (const RFileSimple &other)=delete
RFileSimple &	operator= (RFileSimple &&other)=delete
void	Write (const void *buffer, size_t nbytes, std::int64_t offset=-1)
	Writes bytes in the open stream, either at fFilePos or at the given offset.
std::uint64_t	WriteKey (const void *buffer, std::size_t nbytes, std::size_t len, std::int64_t offset=-1, std::uint64_t directoryOffset=100, const std::string &className="", const std::string &objectName="", const std::string &title="")
	Writes a TKey including the data record, given by buffer, into fFile; returns the file offset to the payload.

Public Attributes
std::unique_ptr< ROOT::Experimental::Internal::RTFileControlBlock >	fControlBlock
	Keeps track of TFile control structures, which need to be updated on committing the data set.
FILE *	fFile = nullptr
	For the simplest cases, a C file stream can be used for writing.
std::uint64_t	fFilePos = 0
	Keeps track of the seek offset.

Constructor & Destructor Documentation

RFileSimple() [1/3]

ROOT::Experimental::Internal::RNTupleFileWriter::RFileSimple::RFileSimple ( )

default

RFileSimple() [2/3]

ROOT::Experimental::Internal::RNTupleFileWriter::RFileSimple::RFileSimple ( const RFileSimple &  other )

delete

RFileSimple() [3/3]

ROOT::Experimental::Internal::RNTupleFileWriter::RFileSimple::RFileSimple ( RFileSimple &&  other )

delete

~RFileSimple()

ROOT::Experimental::Internal::RNTupleFileWriter::RFileSimple::~RFileSimple

(

)

Definition at line 1090 of file RMiniFile.cxx.

Member Function Documentation

operator bool()

ROOT::Experimental::Internal::RNTupleFileWriter::RFileSimple::operator bool ( ) const

inline

Definition at line 171 of file RMiniFile.hxx.

operator=() [1/2]

RFileSimple & ROOT::Experimental::Internal::RNTupleFileWriter::RFileSimple::operator= ( const RFileSimple &  other )

delete

operator=() [2/2]

RFileSimple & ROOT::Experimental::Internal::RNTupleFileWriter::RFileSimple::operator= ( RFileSimple &&  other )

delete

Write()

void ROOT::Experimental::Internal::RNTupleFileWriter::RFileSimple::Write	(	const void *	buffer,
		size_t	nbytes,
		std::int64_t	offset = -1
	)

Writes bytes in the open stream, either at fFilePos or at the given offset.

Definition at line 1097 of file RMiniFile.cxx.

WriteKey()

std::uint64_t ROOT::Experimental::Internal::RNTupleFileWriter::RFileSimple::WriteKey	(	const void *	buffer,
		std::size_t	nbytes,
		std::size_t	len,
		std::int64_t	offset = -1,
		std::uint64_t	directoryOffset = 100,
		const std::string &	className = "",
		const std::string &	objectName = "",
		const std::string &	title = ""
	)

Writes a TKey including the data record, given by buffer, into fFile; returns the file offset to the payload.

The payload is already compressed

Definition at line 1117 of file RMiniFile.cxx.

Member Data Documentation

fControlBlock

std::unique_ptr<ROOT::Experimental::Internal::RTFileControlBlock> ROOT::Experimental::Internal::RNTupleFileWriter::RFileSimple::fControlBlock

Keeps track of TFile control structures, which need to be updated on committing the data set.

Definition at line 153 of file RMiniFile.hxx.

fFile

FILE* ROOT::Experimental::Internal::RNTupleFileWriter::RFileSimple::fFile = nullptr

For the simplest cases, a C file stream can be used for writing.

Definition at line 149 of file RMiniFile.hxx.

fFilePos

std::uint64_t ROOT::Experimental::Internal::RNTupleFileWriter::RFileSimple::fFilePos = 0

Keeps track of the seek offset.

Definition at line 151 of file RMiniFile.hxx.

Collaboration diagram for ROOT::Experimental::Internal::RNTupleFileWriter::RFileSimple:

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

• tree/ntuple/v7/inc/ROOT/RMiniFile.hxx
• tree/ntuple/v7/src/RMiniFile.cxx