Type Alias process_step_callback 

pub type process_step_callback = Option<unsafe extern "C" fn(ctx: *mut c_void)>;

Aliased Type

pub enum process_step_callback {
    None,
    Some(unsafe extern "C" fn(*mut c_void)),
}

Variants

None

No value.

Some(unsafe extern "C" fn(*mut c_void))

Some value of type T.