Compression service using the 'LZ4' library. More...

Inheritance diagram for Arcane::LZ4DataCompressor:

Collaboration diagram for Arcane::LZ4DataCompressor:

Public Member Functions
	LZ4DataCompressor (const ServiceBuildInfo &sbi)
void	build () override
	Build-level construction of the service.
String	name () const override
	Algorithm name.
Int64	minCompressSize () const override
	Minimum array size below which compression is not useful.
void	compress (Span< const std::byte > values, Array< std::byte > &compressed_values) override
	Compresses the data values and stores it in compressed_values.
void	decompress (Span< const std::byte > compressed_values, Span< std::byte > values) override
	Decompresses the data compressed_values and stores it in values.
Public Member Functions inherited from Arcane::AbstractService
	~AbstractService () override
	Destructor.
IServiceInfo *	serviceInfo () const override
	Access to service information. See IServiceInfo for details.
IBase *	serviceParent () const override
	Access to the base interface of main Arcane objects.
IService *	serviceInterface () override
	Returns the low-level IService interface of the service.
Public Member Functions inherited from Arcane::TraceAccessor
	TraceAccessor (ITraceMng *m)
	Constructs an accessor via the trace manager m.
	TraceAccessor (const TraceAccessor &rhs)
	Copy constructor.
TraceAccessor &	operator= (const TraceAccessor &rhs)
	Copy assignment operator.
virtual	~TraceAccessor ()
	Frees resources.
ITraceMng *	traceMng () const
	Trace manager.
TraceMessage	info () const
	Flow for an information message.
TraceMessage	pinfo () const
	Flow for a parallel information message.
TraceMessage	info (char category) const
	Flow for an information message of a given category.
TraceMessage	pinfo (char category) const
	Flow for a parallel information message of a given category.
TraceMessage	info (bool v) const
	Flow for an information message.
TraceMessage	warning () const
	Flow for a warning message.
TraceMessage	pwarning () const
TraceMessage	error () const
	Flow for an error message.
TraceMessage	perror () const
TraceMessage	log () const
	Flow for a log message.
TraceMessage	plog () const
	Flow for a log message.
TraceMessage	logdate () const
	Flow for a log message preceded by the date.
TraceMessage	fatal () const
	Flow for a fatal error message.
TraceMessage	pfatal () const
	Flow for a parallel fatal error message.
TraceMessageDbg	debug (Trace::eDebugLevel=Trace::Medium) const
	Flow for a debug message.
Trace::eDebugLevel	configDbgLevel () const
	Debug level of the configuration file.
TraceMessage	info (Int32 verbose_level) const
	Flow for an information message of a given level.
TraceMessage	linfo () const
	Flow for an information message with the local information level of this instance.
TraceMessage	linfo (Int32 relative_level) const
	Flow for an information message with the local information level of this instance.
void	fatalMessage (const StandaloneTraceMessage &o) const
Public Member Functions inherited from Arcane::IService
virtual	~IService ()
	Releases resources.

Private Member Functions
int	_toInt (Int64 vsize)

Private Attributes
String	m_name

Additional Inherited Members
Protected Member Functions inherited from Arcane::AbstractService
	AbstractService (const ServiceBuildInfo &)
	Constructor from a ServiceBuildInfo.
Protected Member Functions inherited from Arcane::TraceAccessor
void	_setLocalVerboseLevel (Int32 v)
Int32	_localVerboseLevel () const
Protected Member Functions inherited from Arcane::IService
	IService ()
	Constructor.

Detailed Description

Compression service using the 'LZ4' library.

Definition at line 106 of file LZ4DeflateService.cc.

Constructor & Destructor Documentation

◆ LZ4DataCompressor()

Arcane::LZ4DataCompressor::LZ4DataCompressor ( const ServiceBuildInfo & sbi )

inlineexplicit

Definition at line 112 of file LZ4DeflateService.cc.

Member Function Documentation

◆ _toInt()

int Arcane::LZ4DataCompressor::_toInt ( Int64 vsize )

inlineprivate

Definition at line 171 of file LZ4DeflateService.cc.

◆ build()

void Arcane::LZ4DataCompressor::build ( void )

inlineoverridevirtual

Build-level construction of the service.

This method is called right after the constructor.

Reimplemented from Arcane::AbstractService.

Definition at line 120 of file LZ4DeflateService.cc.

◆ compress()

void Arcane::LZ4DataCompressor::compress	(	Span< const std::byte >	values,
		Array< std::byte > &	compressed_values )

inlineoverridevirtual

Compresses the data values and stores it in compressed_values.

This operation may throw an IOException exception in case of an error.

Implements Arcane::IDataCompressor.

Definition at line 123 of file LZ4DeflateService.cc.

References ARCANE_THROW, Arcane::Array< T >::data(), Arcane::SpanImpl< T, SizeType, Extent >::data(), Arcane::TraceAccessor::info(), Arcane::Array< T >::resize(), and Arcane::SpanImpl< T, SizeType, Extent >::size().

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◆ decompress()

void Arcane::LZ4DataCompressor::decompress	(	Span< const std::byte >	compressed_values,
		Span< std::byte >	values )

inlineoverridevirtual

Decompresses the data compressed_values and stores it in values.

values must already have been allocated to the necessary size to contain the decompressed data. This operation may throw an IOException exception in case of an error.

Implements Arcane::IDataCompressor.

Definition at line 151 of file LZ4DeflateService.cc.

References ARCANE_THROW, Arcane::SpanImpl< T, SizeType, Extent >::data(), Arcane::TraceAccessor::info(), and Arcane::SpanImpl< T, SizeType, Extent >::size().

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◆ minCompressSize()

Int64 Arcane::LZ4DataCompressor::minCompressSize ( ) const

inlineoverridevirtual

Minimum array size below which compression is not useful.

This can be used by the caller to avoid compressing/decompressing certain arrays. This value is not used internally by this instance.

If the caller uses this value, consistency must be guaranteed both during compression and decompression (i.e.: do not call decompression for arrays whose decompressed size is less than minCompressSize() if the compress() method was not called for that array).

Implements Arcane::IDataCompressor.

Definition at line 122 of file LZ4DeflateService.cc.

◆ name()

String Arcane::LZ4DataCompressor::name ( ) const

inlineoverridevirtual

Algorithm name.

Implements Arcane::IDataCompressor.

Definition at line 121 of file LZ4DeflateService.cc.

Member Data Documentation

◆ m_name

String Arcane::LZ4DataCompressor::m_name

private

Definition at line 167 of file LZ4DeflateService.cc.

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

LZ4DeflateService.cc

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ LZ4DataCompressor()

Member Function Documentation

◆ _toInt()

◆ build()

◆ compress()

◆ decompress()

◆ minCompressSize()

◆ name()

Member Data Documentation

◆ m_name