#11734: sage_wraps should only read the sources of wrapped functions when
needed.
--------------------------+-------------------------------------------------
Reporter: SimonKing | Owner: jason
Type: defect | Status: positive_review
Priority: blocker | Milestone: sage-4.7.2
Component: misc | Keywords: sage_wraps sources gentoo
startuptime sd32
Work_issues: | Upstream: N/A
Reviewer: Simon King | Author: Julian Rueth
Merged: | Dependencies:
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Description changed by leif:
Old description:
> According to private conversation with Francois Bissey, #9976 has
> introduced a problem that makes it impossible start sage-4.7.1 on Gentoo.
> That's pretty serious, and so this ticket is a blocker.
>
> The problem is that sage_wraps reads the sources of to-be-wrapped
> functions and methods. The sources are stored as an attribute to the
> wrapper, which, on the one hand, is a waste of memory. Worse: Reading the
> Cython sources is impossible for sage-on-gentoo. Therefore, sage can't
> start.
>
> My patch introduces some lightweight classes, that simply store a
> reference to an object (e.g., the to-be-wrapped function) and return the
> sources or source lines or the argument list ''only when called''.
>
> Apply:
>
> [attachment:trac11734_sage_wraps_no_sourceread_lambda.patch]
New description:
According to private conversation with Francois Bissey, #9976 has
introduced a problem that makes it impossible start sage-4.7.1 on Gentoo.
That's pretty serious, and so this ticket is a blocker.
The problem is that sage_wraps reads the sources of to-be-wrapped
functions and methods. The sources are stored as an attribute to the
wrapper, which, on the one hand, is a waste of memory. Worse: Reading the
Cython sources is impossible for sage-on-gentoo. Therefore, sage can't
start.
My patch introduces some lightweight classes, that simply store a
reference to an object (e.g., the to-be-wrapped function) and return the
sources or source lines or the argument list ''only when called''.
Apply only [attachment:trac11734_sage_wraps_no_sourceread_lambda.patch] to
the Sage library.
--
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11734#comment:21>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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