Struct driverkit::iomem::IOBuf

pub struct IOBuf { /* private fields */ }

Represents an IO buffer (data handed to/from device).

Implementations

impl IOBuf

pub fn new(layout: Layout) -> Result<IOBuf, IOMemError>

pub fn expand(&mut self)

Fill buffer with as many 0 as capacity allows.

pub fn truncate(&mut self, new_len: usize)

pub fn clear(&mut self)

Removes all buffer contents.

pub fn copy_in_at( &mut self, offset: usize, src: &[u8] ) -> Result<usize, IOMemError>

Copy data from src into a given offset of the IOBuf.

pub fn copy_in(&mut self, src: &[u8]) -> Result<usize, IOMemError>

Copy raw data of size len into the buffer.

pub fn copy_out_at( &self, offset: usize, dst: &mut [u8] ) -> Result<usize, IOMemError>

Copy data out of the IOBuf, starting at a given offset into dst.

pub fn copy_out(&self, dst: &mut [u8]) -> Result<usize, IOMemError>

Copy the data (starting at 0) to dst slice.

pub fn as_slice(&self) -> &[u8]

Get a IOBuf contents as slice.

pub fn as_mut_slice(&mut self) -> &mut [u8]

Get a IOBuf contents as mutable slice.

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

Trait Implementations

impl Debug for IOBuf

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl DmaObject for IOBuf

fn paddr(&self) -> PAddr

Address of the IOBuf in main memory.

fn vaddr(&self) -> VAddr

Virtual address this buffer can be access by software.

fn ioaddr(&self) -> IOAddr

impl Index<usize> for IOBuf

implementation for the index operator [] on IOBuf

type Output = u8

The returned type after indexing.

fn index(&self, index: usize) -> &Self::Output

Performs the indexing (container[index]) operation.