Enum wasmer_vm::WeakOrStrongInstanceRef[−][src]

pub enum WeakOrStrongInstanceRef {
    Weak(WeakInstanceRef),
    Strong(InstanceRef),
}
Expand description

An InstanceRef that may or may not be keeping the Instance alive.

This type is useful for types that conditionally must keep / not keep the underlying Instance alive. For example, to prevent cycles in WasmerEnvs.

Variants

Weak(WeakInstanceRef)

A weak instance ref.

Strong(InstanceRef)

A strong instance ref.

Implementations

impl WeakOrStrongInstanceRef[src]

pub fn upgrade(&self) -> Option<Self>[src]

Tries to upgrade weak references to a strong reference, returning None if it can’t be done.

pub fn downgrade(&self) -> Self[src]

Clones self into a weak reference.

Trait Implementations

impl Clone for WeakOrStrongInstanceRef[src]

fn clone(&self) -> WeakOrStrongInstanceRef[src]

Returns a copy of the value. Read more

fn clone_from(&mut self, source: &Self)1.0.0[src]

Performs copy-assignment from source. Read more

impl Debug for WeakOrStrongInstanceRef[src]

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

Formats the value using the given formatter. Read more

impl MemoryUsage for WeakOrStrongInstanceRef[src]

fn size_of_val(&self, visited: &mut dyn MemoryUsageTracker) -> usize[src]

Returns the size of the referenced value in bytes. Read more

impl PartialEq<WeakOrStrongInstanceRef> for WeakOrStrongInstanceRef[src]

fn eq(&self, other: &WeakOrStrongInstanceRef) -> bool[src]

This method tests for self and other values to be equal, and is used by ==. Read more

fn ne(&self, other: &WeakOrStrongInstanceRef) -> bool[src]

This method tests for !=.

impl StructuralPartialEq for WeakOrStrongInstanceRef[src]

Auto Trait Implementations

Blanket Implementations

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

pub fn type_id(&self) -> TypeId[src]

Gets the TypeId of self. Read more

impl<T> ArchivePointee for T

type ArchivedMetadata = ()

The archived version of the pointer metadata for this type.

pub fn pointer_metadata(
    &<T as ArchivePointee>::ArchivedMetadata
) -> <T as Pointee>::Metadata

Converts some archived metadata to the pointer metadata for itself.

impl<T> Borrow<T> for T where
    T: ?Sized, [src]

pub fn borrow(&self) -> &T[src]

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]

pub fn borrow_mut(&mut self) -> &mut T[src]

Mutably borrows from an owned value. Read more

impl<T> From<T> for T[src]

pub fn from(t: T) -> T[src]

Performs the conversion.

impl<T, U> Into<U> for T where
    U: From<T>, [src]

pub fn into(self) -> U[src]

Performs the conversion.

impl<T> Pointee for T

type Metadata = ()

The type for metadata in pointers and references to Self.

impl<T> ToOwned for T where
    T: Clone, [src]

type Owned = T

The resulting type after obtaining ownership.

pub fn to_owned(&self) -> T[src]

Creates owned data from borrowed data, usually by cloning. Read more

pub fn clone_into(&self, target: &mut T)[src]

🔬 This is a nightly-only experimental API. (toowned_clone_into)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]

type Error = Infallible

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]

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

The type returned in the event of a conversion error.

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

Performs the conversion.