#6391: libGAP! -- create a Cython library interface to gap
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Reporter: was |
Owner: was
Type: enhancement |
Status: needs_review
Priority: major |
Milestone: sage-4.7
Component: interfaces |
Keywords:
Author: Dima Pasechnik, Ivan Andrus, Volker Braun, William Stein |
Upstream: N/A
Reviewer: Dima Pasechnik, Ivan Andrus, Volker Braun, William Stein |
Merged:
Work_issues: |
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Comment(by dimpase):
Replying to [comment:59 vbraun]:
> The updated gap-4.4.12.p8 now contains a separate `libgap/` directory
with a copy of the gap kernel sources and new autoconf scripts that can
actually build a shared library on Solaris.
>
> While this layout is probably not the final word in how to build libgap,
I think its good enough to test it on a wider audience. Once we are
confident that it works well we should contact upstream and find out in
how far they are willing to add shared library support. Ready for review!
Hi Volker, you mentioned adding doctests etc.
Do you mean for the low-level stuff in gap.pyx ?
Did you try completely replacing gap interface with libgap interface?
IMHO it's about time to start doing this --- this would uncover more
things to do, I imagine.
It would be great is libgap/ contained at least one C example on building
a C application that links against libGAP and does something, like
computing the order of a permutation group. Would be good for stress-
testing, and just understanding the
interface better.
Anyone out there who has time for this now? (not me :-( ) I imagine it's
more work on a makefile than on the C side.
Regarding Sage-libGAP interface, I would like to understand what happens
in a scenario when a Python object P holds
a reference to a GAP object G, and then P gets GC'ed. This should result
in G getting freed (eventually) by GAP's GC.
It would be good to see an evidence that this actually does happen.
Did you check that things work with GAP workspaces (Saving/Loading
workspaces, that is)?
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/6391#comment:60>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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