Struct libffi::high::arity4::Closure4

pub struct Closure4<'a, A, B, C, D, R> { /* fields omitted */ }

An immutable, typed closure with the given argument and result types.

Methods

impl<'a, A: CType, B: CType, C: CType, D: CType, R: CType> Closure4<'a, A, B, C, D, R>

pub fn new<Callback>(callback: &'a Callback) -> Self where
    Callback: Fn(A, B, C, D) -> R + 'a, 

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

impl<'a, A, B, C, D, R> Closure4<'a, A, B, C, D, R>

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

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

pub fn from_parts<U>(
    cif: Cif4<A, B, C, D, R>,
    callback: Callback4<U, A, B, C, D, R>,
    userdata: &'a U
) -> Self

Constructs a typed 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.

impl<'a, A: Copy, B: Copy, C: Copy, D: Copy, R> Closure4<'a, A, B, C, D, R>

pub fn new_with_cif<Callback>(
    cif: Cif4<A, B, C, D, R>,
    callback: &'a Callback
) -> Self where
    Callback: Fn(A, B, C, D) -> R + 'a, 

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