Struct CreditAccount 

pub struct CreditAccount {
    pub max_credits: i64,
    /* private fields */
}

Credit-based flow control for a single producer-consumer pair.

The consumer grants credits to the producer; the producer sends one unit of work per credit and decrements the credit balance.

Fields

max_credits: i64

Maximum credits the consumer will grant at once.

Implementations

impl CreditAccount

pub fn new(max_credits: i64) -> Self

Create a new credit account with zero balance.

pub fn grant(&mut self, n: i64)

Consumer grants n credits (clamped so balance never exceeds max_credits).

pub fn consume(&mut self) -> bool

Producer consumes one credit to send one unit of work.

Returns true if a credit was available, false if the producer should pause.

pub fn balance(&self) -> i64

Current credit balance.

pub fn may_send(&self) -> bool

Returns true if the producer may send work.

Trait Implementations

impl Clone for CreditAccount

fn clone(&self) -> CreditAccount

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CreditAccount

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

Formats the value using the given formatter.