Internal function to retrieve the table index (and lock the fd mutex)

\ingroup libusb_asyncio * Free a transfer structure. This should be called for all transfers * allocated with libusb_alloc_transfer(). * * If the

\ingroup libusb_desc * Get the USB configuration descriptor for the currently active configuration. * This is a non-blocking function which does not

Draw

returns 1 if the product is valid, 0 on overflow. negative factors are considered invalid.

Similar to usbi_handle_transfer_completion() but exclusively for transfers * that were asynchronously cancelled. The same concerns w.r.t. freeing of

Add a completed transfer to the completed_transfers list of the * context and signal the event. The backend's handle_transfer_completion() * functio

Returns 1 on success, 0 on failure. */