ola::io::IOQueue Class Reference

Detailed Description

IOQueue.

Inheritance diagram for ola::io::IOQueue:

Public Member Functions
	IOQueue ()
	IOQueue (class MemoryBlockPool *block_pool)
	~IOQueue ()
unsigned int	Size () const
bool	Empty () const
void	Write (const uint8_t *data, unsigned int length)
unsigned int	Read (uint8_t *data, unsigned int length)
unsigned int	Read (std::string *output, unsigned int length)
unsigned int	Peek (uint8_t *data, unsigned int length) const
struct iovec *	AsIOVec (int *io_count) const
void	Pop (unsigned int n)
void	AppendBlock (class MemoryBlock *block)
void	Clear ()
void	Purge ()
void	Dump (std::ostream *output)

Additional Inherited Members
Static Public Member Functions inherited from ola::io::IOVecInterface
static void	FreeIOVec (const struct iovec *iov)

Constructor & Destructor Documentation

ola::io::IOQueue::IOQueue

(

)

IOQueue.

Parameters

block_size

the size of blocks to use.

ola::io::IOQueue::~IOQueue

(

)

Clean up

Member Function Documentation

void ola::io::IOQueue::AppendBlock

(

class MemoryBlock *

block

)

Append an MemoryBlock to this queue. This may leave a hole in the last block before this method was called, but that's unavoidable without copying (which we don't want to do).

struct iovec * ola::io::IOQueue::AsIOVec ( int *  iocnt ) const

readvirtual

Return this IOQueue as an array of iovec structures. Note: The iovec array points at internal memory structures. This array is invalidated when any non-const methods are called (Append, Pop etc.)

Is the IOQueue is empty, this will return NULL and set iocnt to 0.

Use FreeIOVec() to release the iovec array.

Implements ola::io::IOVecInterface.

void ola::io::IOQueue::Clear

(

)

Remove all data from the IOQueue.

void ola::io::IOQueue::Dump

(

std::ostream *

output

)

Dump this IOQueue as a human readable string

unsigned int ola::io::IOQueue::Peek	(	uint8_t *	data,
		unsigned int	n
	)		const

Copy the first n bytes into the region pointed to by data

void ola::io::IOQueue::Pop ( unsigned int  n )

virtual

Remove the first n bytes from the buffer

Implements ola::io::IOVecInterface.

unsigned int ola::io::IOQueue::Read ( uint8_t *  data, unsigned int  n  )

virtual

Read up to n bytes into the memory location data and shrink the IOQueue by the amount read.

Implements ola::io::InputBufferInterface.

unsigned int ola::io::IOQueue::Read ( std::string *  output, unsigned int  n  )

virtual

Read up to n bytes into the string output.

Implements ola::io::InputBufferInterface.

unsigned int ola::io::IOQueue::Size ( ) const

virtual

Return the amount of data in the buffer

Implements ola::io::OutputBufferInterface.

void ola::io::IOQueue::Write ( const uint8_t *  data, unsigned int  length  )

virtual

Append (length) bytes of data to the buffer

Implements ola::io::OutputBufferInterface.

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

• include/ola/io/IOQueue.h
• common/io/IOQueue.cpp