Struct libffi::high::arity0::ClosureOnce0

pub struct ClosureOnce0<R> { /* fields omitted */ }

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

Methods

impl<R: CType> ClosureOnce0<R>

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

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

impl<R> ClosureOnce0<R>

pub fn new_with_cif<Callback>(cif: Cif0<R>, callback: Callback) -> Self where
    Callback: FnOnce() -> 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<R> ClosureOnce0<R>

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

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

pub fn from_parts<U: Any>(
    cif: Cif0<R>,
    callback: CallbackOnce0<U, 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.