Method Close

cpp/src/arrow/io/file.cc:424–433

  ~MemoryMap() { ARROW_CHECK_OK(Close()); }

  Status Close() {
    if (file_->is_open()) {
      // Lose our reference to the MemoryMappedRegion, so that munmap()
      // is called as soon as all buffer exports are released.
      region_.reset();
      return file_->Close();
    } else {
      return Status::OK();
    }
  }

  bool closed() const { return !file_->is_open(); }