Struct Buffer 

pub struct Buffer { /* private fields */ }

A byte buffer from a pool: a fixed capacity (its size class) and a filled length.

Examples

use net_io::{BufferPool, SizeClass};
let mut pool = BufferPool::standalone(1 << 20);
let mut buf = pool.take(SizeClass::SMALL).unwrap();
buf.spare()[..5].copy_from_slice(b"hello");
buf.set_len(5);
assert_eq!(buf.as_slice(), b"hello");
pool.put(buf);

Implementations

impl Buffer

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

The filled part.

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

The filled part, mutable.

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

The unfilled tail.

pub fn len(&self) -> usize

The filled length.

pub fn is_empty(&self) -> bool

Whether nothing is filled.

pub fn set_len(&mut self, n: usize)

Sets the filled length; saturates at the capacity.

pub fn capacity(&self) -> usize

The capacity in bytes.

pub fn class(&self) -> SizeClass

The size class.

pub fn clear(&mut self)

Empties the buffer (does not wipe; the pool wipes on release).

Trait Implementations

impl Debug for Buffer

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

Formats the value using the given formatter.