Method Tell

python/pyarrow/src/arrow/python/io.cc:152–164

  }

  Result<int64_t> Tell() {
    RETURN_NOT_OK(CheckClosed());

    PyObject* result = cpp_PyObject_CallMethod(file_.obj(), "tell", "()");
    PY_RETURN_IF_ERROR(StatusCode::IOError);

    int64_t position = PyLong_AsLongLong(result);
    Py_DECREF(result);

    // PyLong_AsLongLong can raise OverflowError
    PY_RETURN_IF_ERROR(StatusCode::IOError);
    return position;
  }

  std::mutex& lock() { return lock_; }