Method vmctx_sync

crates/wasmtime/src/runtime/func.rs:2276–2297

Constructor of a host function's `VMContext` for synchronous functions. This creates a `VMArrayCallHostFuncContext` which under the hood will be viewed as `VMContext` in the eventually created `VMFuncRef`.

(
        engine: &Engine,
        ty: FuncType,
        func: F,
    )

    /// This creates a `VMArrayCallHostFuncContext` which under the hood will
    /// be viewed as `VMContext` in the eventually created `VMFuncRef`.
    fn vmctx_sync<F, T>(
        engine: &Engine,
        ty: FuncType,
        func: F,
    ) -> Result<StoreBox<VMArrayCallHostFuncContext>, OutOfMemory>
    where
        F: Fn(Caller<'_, T>, &mut [MaybeUninit<ValRaw>]) -> Result<()> + Send + Sync + 'static,
        T: 'static,
    {
        assert!(ty.comes_from_same_engine(engine));

        unsafe {
            VMArrayCallHostFuncContext::new(
                Self::array_call_trampoline::<T, F>,
                ty.type_index(),
                try_new::<Box<_>>(HostFuncState {
                    func,
                    _ty: ty.into_registered_type(),
                })?,
            )
        }
    }

    /// Constructor of a host function's `VMContext` for asynchronous functions.
    ///