Struct PipeReader 

pub struct PipeReader { /* private fields */ }

The read end of a kernel pipe.

Implementations

impl PipeReader

pub fn read(&self, buf: &mut [u8]) -> Result<usize, KernelError>

Read up to buf.len() bytes from the pipe.

Returns the number of bytes read. Returns 0 when the write end is closed and the buffer is empty (EOF). Spins briefly if the buffer is empty but the write end is still open.

pub fn try_read(&self, buf: &mut [u8]) -> Result<usize, KernelError>

Non-blocking read: return immediately if no data available.

pub fn close(&self)

Close the read end.

pub fn has_data(&self) -> bool

Check if there is data available to read.

Trait Implementations

impl Drop for PipeReader

fn drop(&mut self)

Executes the destructor for this type.