Enum wasmtime_environ::component::dfg::SideEffect

pub enum SideEffect {
    Instance(InstanceId),
    Resource(DefinedResourceIndex),
}

Possible side effects that are possible with instantiating this component.

Variants

Instance(InstanceId)

A core wasm instance was created.

Instantiation is side-effectful due to the presence of constructs such as traps and the core wasm start function which may call component imports. Instantiation order from the original component must be done in the same order.

Resource(DefinedResourceIndex)

A resource was declared in this component.

This is a bit less side-effectful than instantiation but this serves as the order in which resources are initialized in a component with their destructors. Destructors are loaded from core wasm instances (or lowerings) which are produced by prior side-effectful operations.