Struct FidiusStreamHandle 

#[repr(C)]
pub struct FidiusStreamHandle {
    pub next: unsafe extern "C" fn(*mut FidiusStreamHandle, *mut u8, u32, *mut u32) -> i32,
    pub drop_fn: unsafe extern "C" fn(*mut FidiusStreamHandle),
    pub state: *mut c_void,
}

Per-stream handle returned by a cdylib streaming method’s init shim. See the module docs for the pull protocol. #[repr(C)] so the guest (which builds it) and the host (which drives it) agree on the layout across the FFI boundary.

Fields

next: unsafe extern "C" fn(*mut FidiusStreamHandle, *mut u8, u32, *mut u32) -> i32

Advance one item into a host-provided buffer. (handle, buf_ptr, buf_cap, &mut out_len) -> status.

drop_fn: unsafe extern "C" fn(*mut FidiusStreamHandle)

Finish/cancel: drops the producer and frees the handle box. Call exactly once.

state: *mut c_void

Opaque pointer to the boxed StreamState<T>, owned by the guest; freed by drop_fn.