[Bug libstdc++/38875] New: parallel fill in the parallel version of libstdc++

["wuerzner at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

Hi,

I recently started using the paralleled version of gcc's libstdc++. Now, I have
recognized that there is no parallel version of the fill algorithm (at least at
i486-linux-gnu).

The threshold variable __gnu_parallel::_Settings::fill_minimal_n
suggests that a parallel version of the fill algorithm is existing or at least
planned.
Among other things, fill is used for resizing vectors. But
std::vector.resize(n) is not executed in parallel. On first sight, a parallel
fill should not be hard to accomplish using openmp and would definitely be a
cool feature. But I am no stl expert and may be missing crucial
cross-dependencies.

Best regards,
Kay


-- 
           Summary: parallel fill in the parallel version of libstdc++
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: libstdc++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: wuerzner at gmail dot com
 GCC build triplet: i486-linux-gnu
  GCC host triplet: i486-linux-gnu
GCC target triplet: i486-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38875