Struct SignatureRegistry 

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

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.

Fields

inner: RwLock<Inner>

Implementations

impl SignatureRegistry

pub fn new() -> Self

Create a new SignatureRegistry.

pub fn register( &self, sig: &FunctionType, hash: SignatureHash, ) -> VMSignatureHash

Register a signature and return its unique hash.

pub fn lookup_signature( &self, sig_hash: VMSignatureHash, ) -> Option<FunctionType>

Looks up a registered signature by its hash.

Trait Implementations

impl Debug for SignatureRegistry

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

Formats the value using the given formatter.

impl Default for SignatureRegistry

fn default() -> SignatureRegistry

Returns the “default value” for a type.