[Bug libstdc++/33892] New: [libstdc++ v3 parallel mode] Parallel mode algorithms use critical sections with global scope

["singler at ira dot uka dot de" <gcc-bugzilla at gcc dot gnu dot org>]

The libstdc++ v3 parallel mode uses #pragma omp critical in several places,
like this:

#pragma omp critical(writeOutput)
      output = r(output, result);

However, this is a global per app lock, which could deteriorate performance.


-- 
           Summary: [libstdc++ v3 parallel mode] Parallel mode algorithms
                    use critical sections with global scope
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: singler at ira dot uka dot de


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33892