Enum sc_service::config::WasmtimeInstantiationStrategy

source · [−]

#[non_exhaustive]
pub enum WasmtimeInstantiationStrategy {
    PoolingCopyOnWrite,
    RecreateInstanceCopyOnWrite,
    Pooling,
    RecreateInstance,
    LegacyInstanceReuse,
}

Expand description

The instantiation strategy to use for the WASM executor.

All of the CoW strategies (with CopyOnWrite suffix) are only supported when either: a) we’re running on Linux, b) we’re running on an Unix-like system and we’re precompiling our module beforehand.

If the CoW variant of a strategy is unsupported the executor will fall back to the non-CoW equivalent.

Variants (Non-exhaustive)

This enum is marked as non-exhaustive

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

`PoolingCopyOnWrite`

Pool the instances to avoid initializing everything from scratch on each instantiation. Use copy-on-write memory when possible.

This is the fastest instantiation strategy.

`RecreateInstanceCopyOnWrite`

Recreate the instance from scratch on every instantiation. Use copy-on-write memory when possible.

`Pooling`

Pool the instances to avoid initializing everything from scratch on each instantiation.

`RecreateInstance`

Recreate the instance from scratch on every instantiation. Very slow.

`LegacyInstanceReuse`

Legacy instance reuse mechanism. DEPRECATED. Will be removed. Do not use.

Enum sc_service::config::WasmtimeInstantiationStrategy

Variants (Non-exhaustive)

PoolingCopyOnWrite

RecreateInstanceCopyOnWrite

Pooling

RecreateInstance

LegacyInstanceReuse

Trait Implementations

impl Clone for InstantiationStrategy

fn clone(&self) -> InstantiationStrategy

fn clone_from(&mut self, source: &Self)

impl Debug for InstantiationStrategy

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

impl Hash for InstantiationStrategy

fn hash<__H>(&self, state: &mut __H) where __H: Hasher,

fn hash_slice<H>(data: &[Self], state: &mut H) where H: Hasher,

impl PartialEq<InstantiationStrategy> for InstantiationStrategy

fn eq(&self, other: &InstantiationStrategy) -> bool

fn ne(&self, other: &Rhs) -> bool

impl Copy for InstantiationStrategy

impl Eq for InstantiationStrategy

impl StructuralEq for InstantiationStrategy

impl StructuralPartialEq for InstantiationStrategy

Auto Trait Implementations

impl RefUnwindSafe for InstantiationStrategy

impl Send for InstantiationStrategy

impl Sync for InstantiationStrategy

impl Unpin for InstantiationStrategy

impl UnwindSafe for InstantiationStrategy

Blanket Implementations

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

fn type_id(&self) -> TypeId

impl<T> ArchivePointee for T

type ArchivedMetadata = ()

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

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

fn borrow(&self) -> &T

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

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

impl<T> CallHasher for T where T: Hash + ?Sized,

default fn get_hash<H, B>(value: &H, build_hasher: &B) -> u64 where H: Hash + ?Sized, B: BuildHasher,

impl<T> CheckedConversion for T

fn checked_from<T>(t: T) -> Option<Self> where Self: TryFrom<T>,

fn checked_into<T>(self) -> Option<T> where Self: TryInto<T>,

impl<F, W, T, D> Deserialize<With<T, W>, D> for F where W: DeserializeWith<F, T, D>, D: Fallible + ?Sized, F: ?Sized,

fn deserialize( &self, deserializer: &mut D) -> Result<With<T, W>, <D as Fallible>::Error>

impl<T> Downcast for T where T: Any,

fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>

fn as_any(&self) -> &(dyn Any + 'static)

fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

impl<T> DowncastSync for T where T: Any + Send + Sync,

fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Send + Sync + 'static>

impl<T> DynClone for T where T: Clone,

fn __clone_box(&self, Private) -> *mut ()

impl<Q, K> Equivalent<K> for Q where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

fn equivalent(&self, key: &K) -> bool

impl<T> From<T> for T

fn from(t: T) -> T

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>

fn in_current_span(self) -> Instrumented<Self>

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>

fn in_current_span(self) -> Instrumented<Self>

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

fn into(self) -> U

impl<T, Outer> IsWrappedBy<Outer> for T where Outer: AsRef<T> + AsMut<T> + From<T>, T: From<Outer>,

fn from_ref(outer: &Outer) -> &T

fn from_mut(outer: &mut Outer) -> &mut T

impl<T> Pointable for T

const ALIGN: usize = mem::align_of::<T>()

type Init = T

unsafe fn init(init: <T as Pointable>::Init) -> usize

unsafe fn deref<'a>(ptr: usize) -> &'a T

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

unsafe fn drop(ptr: usize)

impl<T> Pointee for T

type Metadata = ()

impl<T> Same<T> for T

type Output = T

`PoolingCopyOnWrite`

`RecreateInstanceCopyOnWrite`

`Pooling`

`RecreateInstance`

`LegacyInstanceReuse`

fn hash<H>(&self, state: &mut H) where
__H: Hasher,

fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,

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

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

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

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

impl<T> CallHasher for T where
T: Hash + ?Sized,

default fn get_hash<H, B>(value: &H, build_hasher: &B) -> u64 where
H: Hash + ?Sized,
B: BuildHasher,

fn checked_from<T>(t: T) -> Option<Self> where
Self: TryFrom<T>,

fn checked_into<T>(self) -> Option<T> where
Self: TryInto<T>,

impl<F, W, T, D> Deserialize<With<T, W>, D> for F where
W: DeserializeWith<F, T, D>,
D: Fallible + ?Sized,
F: ?Sized,

fn deserialize(
&self,
deserializer: &mut D
) -> Result<With<T, W>, <D as Fallible>::Error>

impl<T> Downcast for T where
T: Any,

impl<T> DowncastSync for T where
T: Any + Send + Sync,

impl<T> DynClone for T where
T: Clone,

impl<Q, K> Equivalent<K> for Q where
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,

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

impl<T, Outer> IsWrappedBy<Outer> for T where
Outer: AsRef<T> + AsMut<T> + From<T>,
T: From<Outer>,

fn saturated_from<T>(t: T) -> Self where
Self: UniqueSaturatedFrom<T>,

fn saturated_into<T>(self) -> T where
Self: UniqueSaturatedInto<T>,

impl<T> ToOwned for T where
T: Clone,

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

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

impl<S, T> UncheckedInto<T> for S where
T: UncheckedFrom<S>,

impl<T, S> UniqueSaturatedInto<T> for S where
T: Bounded,
S: TryInto<T>,

impl<V, T> VZip<V> for T where
V: MultiLane<T>,

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,

impl<T> ExHashT for T where
T: 'static + Hash + Eq + Debug + Clone + Send + Sync,

impl<T> MaybeDebug for T where
T: Debug,

impl<T> MaybeDebug for T where
T: Debug,

impl<T> MaybeHash for T where
T: Hash,

impl<T> MaybeHash for T where
T: Hash,

impl<T> MaybeRefUnwindSafe for T where
T: RefUnwindSafe,

impl<T> MaybeSend for T where
T: Send,

impl<T> Member for T where
T: 'static + Send + Sync + Debug + Eq + PartialEq<T> + Clone,