#13447: Make libsingular multivariate polynomial rings collectable
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Reporter: nbruin |
Owner:
Type: defect |
Status: needs_work
Priority: major |
Milestone: sage-5.7
Component: memleak |
Resolution:
Keywords: | Work
issues: Understand why sometimes `new_RingWrap` needs an incref and sometimes
not
Report Upstream: None of the above - read trac for reasoning. |
Reviewers: Simon King
Authors: Nils Bruin, Simon King | Merged
in:
Dependencies: #11521 |
Stopgaps:
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Description changed by jdemeyer:
Old description:
> Presently, #715 + #11521 help not permanently keeping parent in memory.
> In the process we uncovered a hard-but-consistently triggerable problem
> with the collection of `MPolynomialRing_libsingular`. We have only
> observed the problem on `bsd.math.washington.edu`, MacOSX 10.6 on x86_64.
>
> The present work-around is to permanently store references to these upon
> creation, thus preventing collection. It would be nice if we could
> properly solve the problem (or at least establish that the problem is
> specific to `bsd.math`)
>
> '''Apply'''
>
> #13145, #715, #11521, and then
> [attachment:trac_13447-sanitise_ring_refcount.patch
>
> '''Merge together with''' #715, #11521
New description:
Presently, #715 + #11521 help not permanently keeping parent in memory. In
the process we uncovered a hard-but-consistently triggerable problem with
the collection of `MPolynomialRing_libsingular`. We have only observed the
problem on `bsd.math.washington.edu`, MacOSX 10.6 on x86_64.
The present work-around is to permanently store references to these upon
creation, thus preventing collection. It would be nice if we could
properly solve the problem (or at least establish that the problem is
specific to `bsd.math`)
'''Apply''' [attachment:trac_13447-sanitise_ring_refcount.patch]
--
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13447#comment:92>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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