Struct ffi_closure

Source

#[repr(C, align(8))]pub struct ffi_closure {
    pub tramp: ffi_trampoline,
    pub cif: *mut ffi_cif,
    pub fun: Option<unsafe extern "C" fn(arg1: *mut ffi_cif, arg2: *mut c_void, arg3: *mut *mut c_void, arg4: *mut c_void)>,
    pub user_data: *mut c_void,
}

Expand description

A struct used by libffi to describe and manage closures.

Closures in libffi can be used to create function pointers to functions with arbitrary signatures that can also have some custom data embedded.

ffi_closure should not be created manually. Instead, ffi_closure_alloc should be invoked to allocate memory for the ffi_closure before its fields are populated by ffi_prep_closure.

Caution ffi_closure should not be generated or modified manually, but allocated by ffi_closure_alloc and passed around to libffi functions as a pointer.

Fields§

§tramp: ffi_trampoline§cif: *mut ffi_cif§fun: Option<unsafe extern "C" fn(arg1: *mut ffi_cif, arg2: *mut c_void, arg3: *mut *mut c_void, arg4: *mut c_void)>§user_data: *mut c_void

ffi_closure

Struct ffi_closure Copy item path

Fields§

Trait Implementations§

impl Clone for ffi_closure

fn clone(&self) -> ffi_closure

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

impl Debug for ffi_closure

fn fmt(&self, f: &mut Formatter<'_>) -> Result

impl Default for ffi_closure

fn default() -> Self

impl Copy for ffi_closure

Auto Trait Implementations§

impl Freeze for ffi_closure

impl RefUnwindSafe for ffi_closure

impl !Send for ffi_closure

impl !Sync for ffi_closure

impl Unpin for ffi_closure

impl UnwindSafe for ffi_closure

Blanket Implementations§

impl<T> Any for Twhere T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for Twhere T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for Twhere T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> CloneToUninit for Twhere T: Clone,

unsafe fn clone_to_uninit(&self, dest: *mut u8)

impl<T> From<T> for T

fn from(t: T) -> T

impl<T, U> Into<U> for Twhere U: From<T>,

fn into(self) -> U

impl<T> ToOwned for Twhere T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Struct ffi_closure

impl<T> Any for T
where T: 'static + ?Sized,

impl<T> Borrow<T> for T
where T: ?Sized,

impl<T> BorrowMut<T> for T
where T: ?Sized,

impl<T> CloneToUninit for T
where T: Clone,

impl<T, U> Into<U> for T
where U: From<T>,

impl<T> ToOwned for T
where T: Clone,

impl<T, U> TryFrom<U> for T
where U: Into<T>,

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,