yarp::os::ManagedBytes Class Reference

An abstraction for a block of bytes, with optional responsibility for allocating/destroying that block. More...

#include <yarp/os/ManagedBytes.h>

Inheritance diagram for yarp::os::ManagedBytes:

Detailed Description

An abstraction for a block of bytes, with optional responsibility for allocating/destroying that block.

Definition at line 27 of file ManagedBytes.h.

Public Member Functions
	ManagedBytes ()
	Constructor. More...
	ManagedBytes (size_t len)
	Constructor. More...
	ManagedBytes (const Bytes &ext, bool owned=false)
	Constructor. More...
	ManagedBytes (const ManagedBytes &alt)
	Copy constructor. More...
const ManagedBytes &	operator= (const ManagedBytes &alt)
	Assignment operator. More...
virtual	~ManagedBytes ()
	Destructor. More...
void	allocate (size_t len)
	Makes a data block of the specified length that will be deleted if this object is destroyed. More...
bool	allocateOnNeed (size_t neededLen, size_t allocateLen)
void	copy ()
	Makes sure data block is owned, making a copy if necessary. More...
size_t	length () const
size_t	used () const
const char *	get () const
char *	get ()
void	clear ()
	Disassociate object with any data block (deleting block if appropriate). More...
const Bytes &	bytes () const
Bytes &	bytes ()
Bytes	usedBytes ()
size_t	setUsed (size_t used)
	explicitly declare how many of the bytes are in use. More...
size_t	resetUsed ()
bool	read (ConnectionReader &reader) override
	Read this object from a network connection. More...
bool	write (ConnectionWriter &writer) const override
	Write this object to a network connection. More...
bool	isOwner () const
Public Member Functions inherited from yarp::os::Portable
virtual Type	getType () const
Public Member Functions inherited from yarp::os::PortReader
virtual	~PortReader ()
	Destructor. More...
virtual Type	getReadType () const
Public Member Functions inherited from yarp::os::PortWriter
virtual	~PortWriter ()
	Destructor. More...
virtual void	onCompletion () const
	This is called when the port has finished all writing operations. More...
virtual void	onCommencement () const
	This is called when the port is about to begin writing operations. More...
virtual yarp::os::Type	getWriteType () const

Private Attributes
Bytes	b
bool	owned
size_t	use
bool	use_set

Additional Inherited Members
Static Public Member Functions inherited from yarp::os::Portable
static bool	copyPortable (PortWriter &writer, PortReader &reader)
	Copy one portable to another, via writing and reading. More...

Constructor & Destructor Documentation

ManagedBytes() [1/4]

ManagedBytes::ManagedBytes ( )

explicit

Constructor.

No data present.

Definition at line 19 of file ManagedBytes.cpp.

ManagedBytes() [2/4]

ManagedBytes::ManagedBytes ( size_t  len )

explicit

Constructor.

Makes a data block of the specified length that will be deleted if this object is destroyed.

Parameters

len	length of data block

Definition at line 27 of file ManagedBytes.cpp.

ManagedBytes() [3/4]

ManagedBytes::ManagedBytes	(	const Bytes &	ext,
		bool	owned = false
	)

Constructor.

Represent external data.

Parameters

ext	address and length of data
owned	true if data should be deleted if this object is destroyed

Definition at line 35 of file ManagedBytes.cpp.

ManagedBytes() [4/4]

ManagedBytes::ManagedBytes

(

const ManagedBytes &

alt

)

Copy constructor.

Parameters

alt	the data to copy. If it is "owned" an independent copy is made.

Definition at line 43 of file ManagedBytes.cpp.

~ManagedBytes()

ManagedBytes::~ManagedBytes ( )

virtual

Destructor.

Definition at line 68 of file ManagedBytes.cpp.

Member Function Documentation

allocate()

void ManagedBytes::allocate

(

size_t

len

)

Makes a data block of the specified length that will be deleted if this object is destroyed.

Parameters

len	length of data block

Definition at line 73 of file ManagedBytes.cpp.

allocateOnNeed()

bool ManagedBytes::allocateOnNeed	(	size_t	neededLen,
		size_t	allocateLen
	)

Definition at line 82 of file ManagedBytes.cpp.

bytes() [1/2]

const Bytes & ManagedBytes::bytes

(

)

const

Returns

description of data block associated with this object (const version)

Definition at line 137 of file ManagedBytes.cpp.

bytes() [2/2]

Bytes & ManagedBytes::bytes

(

)

Returns

description of data block associated with this object

Definition at line 141 of file ManagedBytes.cpp.

clear()

void ManagedBytes::clear

(

)

Disassociate object with any data block (deleting block if appropriate).

Definition at line 125 of file ManagedBytes.cpp.

copy()

void ManagedBytes::copy

(

)

Makes sure data block is owned, making a copy if necessary.

Definition at line 98 of file ManagedBytes.cpp.

get() [1/2]

const char * ManagedBytes::get

(

)

const

Returns

address of data block (const version)

Definition at line 117 of file ManagedBytes.cpp.

get() [2/2]

char * ManagedBytes::get

(

)

Returns

address of data block

Definition at line 121 of file ManagedBytes.cpp.

isOwner()

bool yarp::os::ManagedBytes::isOwner ( ) const

inline

Returns

true iff the managed data block is owned by this object

Definition at line 148 of file ManagedBytes.h.

length()

size_t ManagedBytes::length

(

)

const

Returns

length of data block

Definition at line 109 of file ManagedBytes.cpp.

operator=()

const ManagedBytes & ManagedBytes::operator=

(

const ManagedBytes &

alt

)

Assignment operator.

Parameters

alt	the data to copy. If it is "owned" an independent copy is made.

Returns

this object

Definition at line 54 of file ManagedBytes.cpp.

read()

bool ManagedBytes::read ( ConnectionReader &  reader )

overridevirtual

Read this object from a network connection.

Override this for your particular class.

Parameters

reader

an interface to the network connection for reading

Returns

true iff the object is successfully read

Implements yarp::os::Portable.

Definition at line 162 of file ManagedBytes.cpp.

resetUsed()

size_t ManagedBytes::resetUsed

(

)

Definition at line 155 of file ManagedBytes.cpp.

setUsed()

size_t ManagedBytes::setUsed

(

size_t

used

)

explicitly declare how many of the bytes are in use.

Parameters

used	byte count

Returns

a confirmation of the number of bytes declared to be in use.

Definition at line 149 of file ManagedBytes.cpp.

used()

size_t ManagedBytes::used

(

)

const

Returns

length of used portion of data block - by default, this is the same as length(), unless setUsed() is called

Definition at line 113 of file ManagedBytes.cpp.

usedBytes()

Bytes ManagedBytes::usedBytes

(

)

Returns

description of used portion of data block associated with this object

Definition at line 145 of file ManagedBytes.cpp.

write()

bool ManagedBytes::write ( ConnectionWriter &  writer ) const

overridevirtual

Write this object to a network connection.

Override this for your particular class. Be aware that depending on the nature of the connections a port has, and what protocol they use, and how efficient the YARP implementation is, this method may be called once, twice, or many times, as the result of a single call to Port::write

Parameters

writer

an interface to the network connection for writing

Returns

true iff the object is successfully written

Implements yarp::os::Portable.

Definition at line 183 of file ManagedBytes.cpp.

Member Data Documentation

b

Bytes yarp::os::ManagedBytes::b

private

Definition at line 153 of file ManagedBytes.h.

owned

bool yarp::os::ManagedBytes::owned

private

Definition at line 154 of file ManagedBytes.h.

use

size_t yarp::os::ManagedBytes::use

private

Definition at line 155 of file ManagedBytes.h.

use_set

bool yarp::os::ManagedBytes::use_set

private

Definition at line 156 of file ManagedBytes.h.

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

• src/libYARP_OS/include/yarp/os/ManagedBytes.h
• src/libYARP_OS/src/ManagedBytes.cpp