/** {@inheritDoc} */
    @Override
    public String toString() {
      int size;

      synchronized (this) {
        size = entries.size();
      }

      return S.toString(
          Buffer.class,
          this,
          "entriesCnt",
          size,
          "locFutsSize",
          locFuts.size(),
          "reqsSize",
          reqs.size());
    }
 /** {@inheritDoc} */
 @Override
 public String toString() {
   return S.toString(GridDataLoaderImpl.class, this);
 }