Struct Foreign 

pub struct Foreign {
    pub ptr: *mut c_void,
    pub drop_fn: Option<unsafe extern "C" fn(*mut c_void)>,
    pub type_id: u64,
    pub byte_size: u64,
}

外部(C/C++)构造的 payload:引擎只持指针,引用归零时回调 drop_fn。

Fields

ptr: *mut c_void

drop_fn: Option<unsafe extern "C" fn(*mut c_void)>

type_id: u64

byte_size: u64

Trait Implementations

impl Debug for Foreign

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

Formats the value using the given formatter.

impl Drop for Foreign

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.

impl Send for Foreign

impl Sync for Foreign