Struct wasmtime::Engine

pub struct Engine { /* fields omitted */ }

An Engine which is a global context for compilation and management of wasm modules.

An engine can be safely shared across threads and is a cheap cloneable handle to the actual engine. The engine itself will be deallocate once all references to it have gone away.

Engines store global configuration preferences such as compilation settings, enabled features, etc. You’ll likely only need at most one of these for a program.

Engines and Clone

Using clone on an Engine is a cheap operation. It will not create an entirely new engine, but rather just a new reference to the existing engine. In other words it’s a shallow copy, not a deep copy.

Engines and Default

You can create an engine with default configuration settings using Engine::default(). Be sure to consult the documentation of Config for default settings.

Implementations

impl Engine

pub fn new(config: &Config) -> Engine

Creates a new Engine with the specified compilation and configuration settings.

pub fn config(&self) -> &Config

Returns the configuration settings that this engine is using.

pub fn same(a: &Engine, b: &Engine) -> bool

Returns whether the engine a and b refer to the same configuration.

Trait Implementations

impl Clone for Engine

fn clone(&self) -> Engine

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Default for Engine

fn default() -> Engine

Returns the “default value” for a type.