Struct wasmtime_runtime::VMRuntimeLimits

source · [−]

#[repr(C)]pub struct VMRuntimeLimits {
    pub stack_limit: UnsafeCell<usize>,
    pub fuel_consumed: UnsafeCell<i64>,
    pub epoch_deadline: UnsafeCell<u64>,
}

Expand description

Structure used to control interrupting wasm code.

Fields

stack_limit: UnsafeCell<usize>

Current stack limit of the wasm module.

For more information see crates/cranelift/src/lib.rs.

fuel_consumed: UnsafeCell<i64>

Indicator of how much fuel has been consumed and is remaining to WebAssembly.

This field is typically negative and increments towards positive. Upon turning positive a wasm trap will be generated. This field is only modified if wasm is configured to consume fuel.

epoch_deadline: UnsafeCell<u64>

Deadline epoch for interruption: if epoch-based interruption is enabled and the global (per engine) epoch counter is observed to reach or exceed this value, the guest code will yield if running asynchronously.

Trait Implementations

impl Debug for VMRuntimeLimits

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

Formats the value using the given formatter. Read more

impl Default for VMRuntimeLimits

fn default() -> VMRuntimeLimits

Returns the “default value” for a type. Read more

impl Send for VMRuntimeLimits

impl Sync for VMRuntimeLimits

Auto Trait Implementations

impl !RefUnwindSafe for VMRuntimeLimits

impl Unpin for VMRuntimeLimits

impl UnwindSafe for VMRuntimeLimits

Blanket Implementations

impl<T> Any for T where
T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T where
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T, U> TryFrom<U> for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.