Struct soroban_wasmi::FuelCosts

pub struct FuelCosts {
    pub base: u64,
    pub entity: u64,
    pub load: u64,
    pub store: u64,
    pub call: u64,
    /* private fields */
}

Type storing all kinds of fuel costs of instructions.

Fields

base: u64

The base fuel costs for all instructions.

entity: u64

The fuel cost for instruction operating on Wasm entities.

Note

A Wasm entitiy is one of func, global, memory or table. Those instructions are usually a bit more costly since they need multiplie indirect accesses through the Wasm instance and store.

load: u64

The fuel cost offset for memory.load instructions.

store: u64

The fuel cost offset for memory.store instructions.

call: u64

The fuel cost offset for call and call_indirect instructions.

Implementations

impl FuelCosts

pub fn fuel_for_drop_keep(&self, drop_keep: DropKeep) -> u64

Returns the fuel consumption for branches and returns using the given [DropKeep].

pub fn fuel_for_locals(&self, locals: u64) -> u64

Returns the fuel consumption for calling a function with the amount of local variables.

Note

Function parameters are also treated as local variables.

pub fn fuel_for_bytes(&self, bytes: u64) -> u64

Returns the fuel consumption for processing the amount of memory bytes.

pub fn fuel_for_elements(&self, elements: u64) -> u64

Returns the fuel consumption for processing the amount of table elements.

Trait Implementations

impl Clone for FuelCosts

fn clone(&self) -> FuelCosts

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for FuelCosts

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

Formats the value using the given formatter.

impl Default for FuelCosts

fn default() -> Self

Returns the “default value” for a type.

impl Copy for FuelCosts