Struct MailboxCapacity 

pub struct MailboxCapacity(/* private fields */);

Logical hop bound for one flow’s inbox.

Why not usize

A raw capacity: usize lets a 64-bit host pass an absurd value and pretend it is a memory contract. An embeddable M:N runtime must pick deliberate bounds: enough hops for request/reply bursts, not enough to grow RSS until OOM when a slow consumer sits under a fast producer.

MIN = 1 (a mailbox that cannot hold a hop is not a mailbox). MAX = 1 << 20 (~1M hops) is a hard ceiling, not a recommendation — the default is MailboxCapacity::DEFAULT (256).

Implementations

impl MailboxCapacity

pub const MIN: u32 = 1

pub const MAX: u32

pub const DEFAULT: MailboxCapacity

Default logical bound used by super::MailboxConfig::DEFAULT.

pub const fn new(value: u32) -> Option<Self>

Some iff value is in MIN..=MAX.

pub const fn get(self) -> usize

pub const fn get_u32(self) -> u32

Trait Implementations

impl Clone for MailboxCapacity

fn clone(&self) -> MailboxCapacity

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for MailboxCapacity

impl Debug for MailboxCapacity

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

Formats the value using the given formatter.

impl Default for MailboxCapacity

fn default() -> Self

Returns the “default value” for a type.

impl Eq for MailboxCapacity

impl Hash for MailboxCapacity

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for MailboxCapacity

fn cmp(&self, other: &MailboxCapacity) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for MailboxCapacity

fn eq(&self, other: &MailboxCapacity) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl PartialOrd for MailboxCapacity

fn partial_cmp(&self, other: &MailboxCapacity) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for MailboxCapacity