Struct Meter 

pub struct Meter {
    pub bound: fn() -> Option<u64>,
    pub charged: fn(&mut i64, Option<u64>, &mut dyn FnMut()) -> bool,
    pub charge: fn(i64),
}

The host’s allocator meter, through which a node holds each process to the live-byte bound of the evaluation that spawned it (max_alloc_bytes).

A process is charged what its own slices leave live and the messages delivered to it, never what its sender or its spawner holds: a message’s copy belongs to the receiver, and a process’s interpreter and code belong to the node. Past its bound a process exits ExitReason::memory_exhausted at the end of the slice that passed it.

Fields

bound: fn() -> Option<u64>

The bound of the account running now: None when it has none, or the host counts nothing.

charged: fn(&mut i64, Option<u64>, &mut dyn FnMut()) -> bool

Run the closure charged to the account whose live bytes the i64 carries, held to the bound; answers whether it passed the bound.

charge: fn(i64)

Charge bytes to the account running now.

Trait Implementations

impl Clone for Meter

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Meter

impl Debug for Meter

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

Formats the value using the given formatter.