Function is_host_backend

src/framework/core/backend.cpp:160–166

        ((ggml_backend_set_n_threads_t)fn)(backend, threads);
    }
}

bool is_host_backend(ggml_backend_t backend) {
    if (backend == nullptr) {
        return false;
    }
    ggml_backend_dev_t device = ggml_backend_get_device(backend);
    return device != nullptr && ggml_backend_dev_type(device) == GGML_BACKEND_DEVICE_TYPE_CPU;
}