[Bug libc/23978] New: dlmopen(): increasing the number of name spaces

[ahori at riken dot jp]

https://sourceware.org/bugzilla/show_bug.cgi?id=23978

            Bug ID: 23978
           Summary: dlmopen(): increasing the number of name spaces
           Product: glibc
           Version: unspecified
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P2
         Component: libc
          Assignee: unassigned at sourceware dot org
          Reporter: ahori at riken dot jp
                CC: drepper.fsp at gmail dot com
  Target Milestone: ---

Is there any chance to increase the number of name spaces created by calling
dlmopen()?

I am working on new parallel execution model (named Process-in-Process (PiP),
detailes: https://dl.acm.org/citation.cfm?id=3208045) and I want to create name
spaces much more than 16 which is the current upper limit.

I already have a patch to do this. It is very simple. Just increase the number
of DL_NNS found in sysdeps/generic/ldsodefs.h.  I would like to have around 300
which is mlarger than the number of cores available on Xeon Phi (KNL).

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