Trait VTableMetaDropInPlace 

pub unsafe trait VTableMetaDropInPlace: VTableMeta {
    // Required methods
    unsafe fn drop_in_place(vtable: &Self::VTable, ptr: *mut u8) -> Layout;
    unsafe fn dealloc(vtable: &Self::VTable, ptr: *mut u8, layout: Layout);
}

This trait is implemented by the #[vtable] macro.

It is implemented if the macro has a “drop_in_place” function.

Safety

The implementation of drop_in_place and dealloc must be correct

Required Methods

unsafe fn drop_in_place(vtable: &Self::VTable, ptr: *mut u8) -> Layout

Safety

The target ptr argument needs to be pointing to a an instance of the VTable after the call to this function, the memory is still there but no longer contains a valid object.

unsafe fn dealloc(vtable: &Self::VTable, ptr: *mut u8, layout: Layout)

Safety

The target ptr must have been allocated by the same allocator as the one which the vtable will delegate to.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors