Trait WasmInstance 

pub trait WasmInstance: Send {
    // Required method
    fn call_with_allocation_stats(
        &mut self,
        method: &str,
        data: &[u8],
    ) -> (Result<Vec<u8>, Error>, Option<AllocationStats>);

    // Provided methods
    fn call(&mut self, method: &str, data: &[u8]) -> Result<Vec<u8>, Error> { ... }
    fn call_export(
        &mut self,
        method: &str,
        data: &[u8],
    ) -> Result<Vec<u8>, Error> { ... }
    fn set_heap_alloc_strategy(
        &mut self,
        _heap_alloc_strategy: HeapAllocStrategy,
    ) { ... }
}

A trait that defines an abstract wasm module instance.

This can be implemented by an execution engine.

Required Methods

fn call_with_allocation_stats( &mut self, method: &str, data: &[u8], ) -> (Result<Vec<u8>, Error>, Option<AllocationStats>)

Call a method on this WASM instance.

Before execution, instance is reset.

Returns the encoded result on success.

Provided Methods

fn call(&mut self, method: &str, data: &[u8]) -> Result<Vec<u8>, Error>

Call a method on this WASM instance.

Before execution, instance is reset.

Returns the encoded result on success.

fn call_export(&mut self, method: &str, data: &[u8]) -> Result<Vec<u8>, Error>

Call an exported method on this WASM instance.

Before execution, instance is reset.

Returns the encoded result on success.

fn set_heap_alloc_strategy(&mut self, _heap_alloc_strategy: HeapAllocStrategy)

Update the heap allocation strategy for subsequent calls.

This is used when an instance is reused from a pool but the caller needs a different memory limit than what the instance was originally created with.

Implementors