Struct AllocateAndReturnPointer

pub struct AllocateAndReturnPointer<T, const N: usize>(/* private fields */);

(DEPRECATED) Return T as a blob of bytes into the runtime.

Uses T::AsRef<[u8]> to cast T into a &[u8], allocates runtime memory using the legacy allocator, copies the slice into the runtime memory, and returns a pointer to it.

THIS STRATEGY IS DEPRECATED; DO NOT USE FOR NEW HOST FUNCTIONS!

Ideally use a mutable slice to return data to the guest, for example using the PassPointerAndWrite strategy.

Raw FFI type: u32 (a pointer to the byte blob)

Trait Implementations

impl<T, const N: usize> IntoFFIValue for AllocateAndReturnPointer<T, N>

where T: AsRef<[u8]>,

fn into_ffi_value( value: Self::Inner, context: &mut dyn FunctionContext, ) -> Result<Self::FFIType>

Convert Self::Inner into an FFI value.

impl<T, const N: usize> RIType for AllocateAndReturnPointer<T, N>

type FFIType = u32

The raw FFI type that is used to pass Self through the host <-> runtime boundary.

type Inner = T

The inner type without any serialization strategy wrapper.