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RFC: Change of API in mpool
WHAT: Remove dependency on ompi_info_t in mca_mpool_base_alloc
WHY: To be able to move mpool out of the ompi-layer.
WHERE: Changes just in the mpool and in ompi/mpi/c/alloc_mem.c
WHEN: Open MPI-1.4
TIMEOUT: February 3, 2009.
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Details:
WHY:
With the proposed move of the BTL framework out of the ompi-layer, we
need to move/copy a few dependant class- and other functionality with it
(omp_free_list, ompi_bitmap, ompi_rb_tree, common, mpool, allocator,
rcache).
The only real dependency problem, visible right now, that requires a
change is the function mca_mpool_base_alloc, which requires ompi_info_t.
WHAT:
In order to make mca_mpool_base_alloc oblivious of MPI, we'd propose
passing all relevant info as opal_list_t -- and prepare this by the only
caller ompi/mpi/c/alloc_mem.c, which only copies ("mpool",value)-pairs
into a list (if there are any).
The patchlet can be applied to trunk / or the branch koenig-btl, however,
I left out the required (but boring) svn mv and rename of ompi->onet.
Has been tested with the supplied test-program, produces the expected
results.
Any comments are welcome.
CU,
Rainer
--
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Rainer Keller, PhD Tel: (865) 241-6293
Oak Ridge National Lab Fax: (865) 241-4811
PO Box 2008 MS 6164 Email: keller_at_[hidden]
Oak Ridge, TN 37831-2008 AIM/Skype: rusraink
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