libusb_handle_events_timeout_completed
int libusb_handle_events_timeout_completed(libusb_context * ctx, struct timeval *tv, int *completed);
return (libusb_handle_events_timeout_completed(ctx, NULL, completed));
return (libusb_handle_events_timeout_completed(ctx, tv, NULL));
return (libusb_handle_events_timeout_completed(ctx, NULL, NULL));