Struct wasmer_vm::sig_registry::SignatureRegistry

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pub struct SignatureRegistry {
    inner: RwLock<Inner>,
}
Expand description

WebAssembly requires that the caller and callee signatures in an indirect call must match. To implement this efficiently, keep a registry of all signatures, shared by all instances, so that call sites can just do an index comparison.

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§inner: RwLock<Inner>

Implementations§

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impl SignatureRegistry

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pub fn new() -> Self

Create a new SignatureRegistry.

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pub fn register(&self, sig: &FunctionType) -> VMSharedSignatureIndex

Register a signature and return its unique index.

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pub fn lookup(&self, idx: VMSharedSignatureIndex) -> Option<FunctionType>

Looks up a shared signature index within this registry.

Note that for this operation to be semantically correct the idx must have previously come from a call to register of this same object.

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impl Debug for SignatureRegistry

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

Formats the value using the given formatter. Read more
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impl Default for SignatureRegistry

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fn default() -> SignatureRegistry

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

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

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type ArchivedMetadata = ()

The archived version of the pointer metadata for this type.
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fn into(self) -> U

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fn layout_raw(_: <T as Pointee>::Metadata) -> Result<Layout, LayoutError>

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impl<T> Pointee for T

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type Metadata = ()

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type Output = T

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impl<T, U> TryInto<U> for T
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type Error = <U as TryFrom<T>>::Error

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