Trait devices::usb::backend::transfer::BackendTransfer

pub trait BackendTransfer {
    // Required methods
    fn status(&self) -> TransferStatus;
    fn actual_length(&self) -> usize;
    fn buffer(&self) -> &TransferBuffer;
    fn set_callback<C: 'static + Fn(BackendTransferType) + Send + Sync>(
        &mut self,
        cb: C,
    );
}

The backend transfer trait implemention is the interface of a generic transfer structure that each backend type should implement to be compatible with the generic backend device provider logic.

Required Methods

fn status(&self) -> TransferStatus

Returns the status of the transfer in a TransferStatus enum

fn actual_length(&self) -> usize

Returns the actual amount of data transferred, which may be less than the original length.

fn buffer(&self) -> &TransferBuffer

Returns a reference to the TransferBuffer object.

fn set_callback<C: 'static + Fn(BackendTransferType) + Send + Sync>( &mut self, cb: C, )

Sets an optional callback on the transfer to be called when the transfer completes.

Object Safety

This trait is not object safe.

Implementations on Foreign Types

impl BackendTransfer for Transfer

fn status(&self) -> TransferStatus

fn actual_length(&self) -> usize

fn buffer(&self) -> &TransferBuffer

fn set_callback<C: 'static + Fn(BackendTransferType) + Send + Sync>( &mut self, cb: C, )

Implementors

impl BackendTransfer for BackendTransferType

impl BackendTransfer for FidoTransfer