Struct FuelCosts 

pub struct FuelCosts { /* private fields */ }

Type storing all kinds of fuel costs of instructions.

Implementations

impl FuelCosts

pub fn base(&self) -> u64

Returns the base fuel costs for all Wasmi IR instructions.

pub fn entity(&self) -> u64

Returns the base fuel costs for all Wasmi IR entity related instructions.

pub fn load(&self) -> u64

Returns the base fuel costs for all Wasmi IR load instructions.

pub fn store(&self) -> u64

Returns the base fuel costs for all Wasmi IR store instructions.

pub fn call(&self) -> u64

Returns the base fuel costs for all Wasmi IR call instructions.

pub fn fuel_for_copies(&self, len_copies: u64) -> u64

Returns the fuel costs for len_copies register copies in Wasmi IR.

Note

Registers are copied for the following Wasmi IR instructions:

• calls (parameter passing)
• copy_span
• copy_many
• return_span
• return_many
• table.grow (+ variants)
• table.copy (+ variants)
• table.fill (+ variants)
• table.init (+ variants)

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

Returns the fuel costs for len_copies register copies in Wasmi IR.

Note

Registers are copied for the following Wasmi IR instructions:

• memory.grow
• memory.copy
• memory.fill
• memory.init

Trait Implementations

impl Clone for FuelCosts

fn clone(&self) -> FuelCosts

Returns a duplicate 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