Struct tokio::io::util::vec_with_initialized::VecWithInitialized

pub(crate) struct VecWithInitialized<V> {
    vec: V,
    num_initialized: usize,
    starting_capacity: usize,
}

This struct wraps a Vec<u8> or &mut Vec<u8>, combining it with a num_initialized, which keeps track of the number of initialized bytes in the unused capacity.

The purpose of this struct is to remember how many bytes were initialized through a ReadBuf from call to call.

This struct has the safety invariant that the first num_initialized of the vector’s allocation must be initialized at any time.

Fields

vec: V

num_initialized: usize

starting_capacity: usize

Implementations

impl VecWithInitialized<Vec<u8>>

pub(crate) fn take(&mut self) -> Vec<u8>

impl<V> VecWithInitialized<V>

where V: VecU8,

pub(crate) fn new(vec: V) -> Self

pub(crate) fn reserve(&mut self, num_bytes: usize)

pub(crate) fn is_empty(&self) -> bool

pub(crate) fn get_read_buf<'a>(&'a mut self) -> ReadBuf<'a>

pub(crate) fn apply_read_buf(&mut self, parts: ReadBufParts)

pub(crate) fn try_small_read_first(&self, num_bytes: usize) -> bool

Trait Implementations

impl<V: Debug> Debug for VecWithInitialized<V>

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

Formats the value using the given formatter.