Function fdf_testing_create_unmanaged_dispatcher 

pub unsafe extern "C" fn fdf_testing_create_unmanaged_dispatcher(
    driver: *const c_void,
    options: u32,
    name: *const c_char,
    name_len: usize,
    observer: *mut fdf_dispatcher_shutdown_observer_t,
    out_dispatcher: *mut *mut fdf_dispatcher_t,
) -> zx_status_t

Creates a dispatcher on a unmanaged thread pool. This means that there are no background threads handling this dispatcher and so it has to be ran explicitly using the various run calls. See |fdf_env_dispatcher_create_with_owner| for more information about the parameters and return value.