try {
              e = q.poll(deadline - System.nanoTime(), TimeUnit.NANOSECONDS);
              break;
            } catch (InterruptedException ex) {
              interrupted = true; // note interruption and retry
            }
          }
          if (e == null) {
            break; // we already waited enough, and there are no more elements in sight
          }
          buffer.add(e);
          added++;
        }