Struct patract_wasmi::StackRecycler

pub struct StackRecycler { /* fields omitted */ }

Used to recycle stacks instead of allocating them repeatedly.

Implementations

impl StackRecycler

pub fn with_limits(value_stack_limit: usize, call_stack_limit: usize) -> Self

Limit stacks created by this recycler to

• value_stack_limit bytes for values and
• call_stack_limit levels for calls.

pub fn clear(&mut self)

Clears any values left on the stack to avoid leaking them to future export invocations.

This is a secondary defense to prevent modules from exploiting faulty stack handling in the interpreter.

Do note that there are additional channels that can leak information into an untrusted module.

Trait Implementations

impl Default for StackRecycler

fn default() -> Self

Returns the “default value” for a type.