Struct wasmi::Config

pub struct Config { /* private fields */ }

Configuration for an Engine.

Implementations

impl Config

pub fn set_stack_limits(&mut self, stack_limits: StackLimits) -> &mut Self

Sets the StackLimits for the Config.

pub fn set_cached_stacks(&mut self, amount: usize) -> &mut Self

Sets the maximum amount of cached stacks for reuse for the Config.

Note

Defaults to 2.

pub fn wasm_mutable_global(&mut self, enable: bool) -> &mut Self

Enable or disable the mutable-global Wasm proposal for the Config.

Note

Enabled by default.

pub fn wasm_sign_extension(&mut self, enable: bool) -> &mut Self

Enable or disable the sign-extension Wasm proposal for the Config.

Note

Enabled by default.

pub fn wasm_saturating_float_to_int(&mut self, enable: bool) -> &mut Self

Enable or disable the saturating-float-to-int Wasm proposal for the Config.

Note

Enabled by default.

pub fn wasm_multi_value(&mut self, enable: bool) -> &mut Self

Enable or disable the multi-value Wasm proposal for the Config.

Note

Enabled by default.

pub fn wasm_bulk_memory(&mut self, enable: bool) -> &mut Self

Enable or disable the bulk-memory Wasm proposal for the Config.

Note

Enabled by default.

pub fn wasm_reference_types(&mut self, enable: bool) -> &mut Self

Enable or disable the reference-types Wasm proposal for the Config.

Note

Enabled by default.

pub fn wasm_tail_call(&mut self, enable: bool) -> &mut Self

Enable or disable the tail-call Wasm proposal for the Config.

Note

Disabled by default.

pub fn wasm_extended_const(&mut self, enable: bool) -> &mut Self

Enable or disable the [extended-const] Wasm proposal for the Config.

Note

Disabled by default.

pub fn floats(&mut self, enable: bool) -> &mut Self

Enable or disable Wasm floating point (f32 and f64) instructions and types.

Enabled by default.

pub fn consume_fuel(&mut self, enable: bool) -> &mut Self

Configures whether wasmi will consume fuel during execution to either halt execution as desired.

Note

This configuration can be used to make wasmi instrument its internal bytecode so that it consumes fuel as it executes. Once an execution runs out of fuel a TrapCode::OutOfFuel trap is raised. This way users can deterministically halt or yield the execution of WebAssembly code.

• Use Store::add_fuel to pour some fuel into the Store before executing some code as the Store start with no fuel.
• Use Caller::consume_fuel to charge costs for executed host functions.

Disabled by default.

pub fn fuel_consumption_mode(&mut self, mode: FuelConsumptionMode) -> &mut Self

Configures the FuelConsumptionMode for the Engine.

Note

This has no effect if fuel metering is disabled for the Engine.

Trait Implementations

impl Clone for Config

fn clone(&self) -> Config

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Config

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

Formats the value using the given formatter.

impl Default for Config

fn default() -> Self

Returns the “default value” for a type.

impl Copy for Config