IOPosBuffer Struct Reference

#include <IOPosBuffer.h>

Public Member Functions
void *	data (void) const
	IOPosBuffer (void)
	IOPosBuffer (IOOffset offset, void *data, IOSize length)
	IOPosBuffer (IOOffset offset, const void *data, IOSize length)
IOOffset	offset (void) const
void	set_data (void *new_buffer)
void	set_offset (IOOffset new_offset)
void	set_size (IOSize new_size)
IOSize	size (void) const

Private Attributes
void *	m_data
IOSize	m_length
IOOffset	m_offset

Detailed Description

Buffer for I/O operations.

Definition at line 7 of file IOPosBuffer.h.

Constructor & Destructor Documentation

IOPosBuffer::IOPosBuffer ( void  )

inline

Construct a null I/O buffer.

Definition at line 30 of file IOPosBuffer.h.

  : m_offset (0),
    m_data (nullptr),
    m_length (0)
{}

IOPosBuffer::IOPosBuffer ( IOOffset  offset, void *  data, IOSize  length  )

inline

Construct a I/O buffer for reading.

Definition at line 38 of file IOPosBuffer.h.

  : m_offset (offset),
    m_data (data),
    m_length (length)
{}

IOPosBuffer::IOPosBuffer ( IOOffset  offset, const void *  data, IOSize  length  )

inline

Construct a I/O buffer for writing.

Definition at line 46 of file IOPosBuffer.h.

  : m_offset (offset),
    m_data (const_cast<void *> (data)),
    m_length (length)
{}

Member Function Documentation

void * IOPosBuffer::data ( void  ) const

inline

Return a pointer to the beginning of the buffer's data area.

Definition at line 59 of file IOPosBuffer.h.

References m_data.

Referenced by consumeChunkBack(), consumeChunkFront(), DavixFile::readv(), XrdFile::readv(), and ReadRepacker::unpack().

{ return m_data; }

IOOffset IOPosBuffer::offset ( void  ) const

inline

Return the file offset where I/O is expected to occur.

Definition at line 54 of file IOPosBuffer.h.

References m_offset.

Referenced by consumeChunkBack(), consumeChunkFront(), ReadRepacker::packInternal(), LocalCacheFile::prefetch(), File::prefetch(), LocalCacheFile::readv(), DavixFile::readv(), DCacheFile::readv(), XrdFile::readv(), and XrdAdaptor::RequestManager::splitClientRequest().

{ return m_offset; }

void IOPosBuffer::set_data ( void *  new_data )

inline

Update the buffer's data area

Definition at line 74 of file IOPosBuffer.h.

References m_data.

Referenced by consumeChunkBack(), consumeChunkFront(), ReadRepacker::packInternal(), and XrdFile::readv().

{ m_data = new_data; }

void IOPosBuffer::set_offset ( IOOffset  new_offset )

inline

Update the file offset

Definition at line 69 of file IOPosBuffer.h.

References m_offset.

Referenced by consumeChunkBack(), consumeChunkFront(), ReadRepacker::packInternal(), and XrdFile::readv().

{ m_offset = new_offset; }

void IOPosBuffer::set_size ( IOSize  new_length )

inline

Update the buffer's size

Definition at line 79 of file IOPosBuffer.h.

References m_length.

Referenced by consumeChunkBack(), consumeChunkFront(), ReadRepacker::packInternal(), and XrdFile::readv().

{ m_length = new_length; }

IOSize IOPosBuffer::size ( void  ) const

inline

Return the buffer's size.

Definition at line 64 of file IOPosBuffer.h.

References m_length.

Referenced by ntupleDataFormat._Collection::__iter__(), ntupleDataFormat._Collection::__len__(), consumeChunkBack(), consumeChunkFront(), ReadRepacker::packInternal(), LocalCacheFile::prefetch(), File::prefetch(), LocalCacheFile::readv(), DavixFile::readv(), DCacheFile::readv(), and XrdFile::readv().

{ return m_length; }

Member Data Documentation

void* IOPosBuffer::m_data

private

Definition at line 24 of file IOPosBuffer.h.

Referenced by data(), and set_data().

IOSize IOPosBuffer::m_length

private

Definition at line 25 of file IOPosBuffer.h.

Referenced by set_size(), and size().

IOOffset IOPosBuffer::m_offset

private

Definition at line 23 of file IOPosBuffer.h.

Referenced by offset(), and set_offset().