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Re: OpenMP threadprivate on non-ELF systems

From: "Asher Langton" <langton2 at llnl dot gov>
To: "Richard Henderson" <rth at redhat dot com>
Cc: fortran at gcc dot gnu dot org, jakub at redhat dot com, dnovillo at redhat dot com, "Mike Kumbera" <kumbera1 at llnl dot gov>
Date: Tue, 15 Aug 2006 11:13:52 -0700
Subject: Re: OpenMP threadprivate on non-ELF systems
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References: <1953a4560608150901n5010ced9u9f02283f98ab22b7@mail.gmail.com> <20060815165116.GA29853@redhat.com>

On 8/15/06, Richard Henderson <rth@redhat.com> wrote:

On Tue, Aug 15, 2006 at 09:01:58AM -0700, Asher Langton wrote:
> Attached is a patch-in-progress that implements the OpenMP directive
> in gfortran without relying on ELF Thread Local Storage support.  The
> current implementation only supports systems with TLS, and doesn't
> work on other systems (AIX, Darwin, etc.)

I'd much prefer if we simply implemented a form of TLS on these
systems.  It should be fairly straightforward to provide a generic
implementation based on pthread_getspecific and friends.


I agree that a generic TLS would be better, but I'm not sure that it's
straightforward to implement.  In particular, since
pthread_getspecific only operates on a pointer, I think we'd still
need some runtime support to allocate storage for the thread-local
data.

-Asher

Follow-Ups:
- Re: OpenMP threadprivate on non-ELF systems
  - From: Richard Henderson

References:
- OpenMP threadprivate on non-ELF systems
  - From: Asher Langton
- Re: OpenMP threadprivate on non-ELF systems
  - From: Richard Henderson

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