Struct InlineTokenMap 

pub struct InlineTokenMap<V> { /* private fields */ }

A map keyed by Token that holds its lowest-token entry inline.

A session almost always has exactly one backend connection, so the two per-backend indexes a mux session keeps — Context::backend_streams and the backend half of MuxTimeouts — almost always hold one entry. A HashMap allocated its table on that first insert, once per session and so once per request on a one-request connection (#1613). Here the first entry costs nothing and only a second backend reaches the overflow map.

The shape is BackendConnections’s: first is None only when rest is empty, and its token is below every token in rest, so iteration runs in ascending Token order.

Implementations

impl<V> InlineTokenMap<V>

pub const fn new() -> Self

pub fn is_empty(&self) -> bool

pub fn contains_key(&self, token: &Token) -> bool

pub fn get(&self, token: &Token) -> Option<&V>

pub fn get_mut(&mut self, token: &Token) -> Option<&mut V>

pub fn get_or_insert_with( &mut self, token: Token, default: impl FnOnce() -> V, ) -> &mut V

The value under token, inserting default() first when there is none.

pub fn remove(&mut self, token: &Token) -> Option<V>

Remove and return the value under token.

pub fn retain(&mut self, keep: impl FnMut(&Token, &mut V) -> bool)

Keep only the entries keep answers true for.

pub fn clear(&mut self)

pub fn iter(&self) -> impl Iterator<Item = (&Token, &V)>

The entries in ascending Token order.

pub fn values(&self) -> impl Iterator<Item = &V>

Trait Implementations

impl<V: Debug> Debug for InlineTokenMap<V>

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

Formats the value using the given formatter.

impl<V> Default for InlineTokenMap<V>

fn default() -> Self

Returns the “default value” for a type.