Struct libffi::middle::Arg

#[repr(C)]
pub struct Arg(_);

Contains an untyped pointer to a function argument.

When calling a function via a CIF, each argument must be passed as a C void*. Wrapping the argument in the Arg struct accomplishes the necessary coercion.

Methods

impl Arg

pub fn new<T>(r: &T) -> Self

Coerces an argument reference into the Arg type.

This is used to wrap each argument pointer before passing them to Cif::call.

Trait Implementations

impl Clone for Arg

fn clone(&self) -> Arg

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Arg

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.