Struct libffi::high::arity1::ClosureOnce1

pub struct ClosureOnce1<A, R> { /* fields omitted */ }

A one-shot, typed closure with the given argument and result types.

Methods

impl<A: CType, R: CType> ClosureOnce1<A, R>

pub fn new<Callback>(callback: Callback) -> Self where
    Callback: FnOnce(A) -> R + Any, 

Constructs a typed closure callable from C from a Rust closure.

impl<A: Copy, R> ClosureOnce1<A, R>

pub fn new_with_cif<Callback>(cif: Cif1<A, R>, callback: Callback) -> Self where
    Callback: FnOnce(A) -> R + Any, 

Constructs a one-shot closure callable from C from a CIF describing the calling convention for the resulting function and the Rust closure to call.

impl<A, R> ClosureOnce1<A, R>

pub fn code_ptr(&self) -> &extern "C" fn(_: A) -> R

Gets the C code pointer that is used to invoke the closure.

pub fn from_parts<U: Any>(
    cif: Cif1<A, R>,
    callback: CallbackOnce1<U, A, R>,
    userdata: U
) -> Self

Constructs a one-shot closure callable from C from a CIF describing the calling convention for the resulting function, a callback for the function to call, and userdata to pass to the callback.