#13394: Write a WeakValueDictionary with safer key removal
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Reporter: nbruin | Owner: rlm
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.13
Component: memleak | Resolution:
Keywords: | Merged in:
Authors: Simon King | Reviewers:
Report Upstream: None of the above | Work issues:
- read trac for reasoning. | Commit:
Branch: | fab0ed4112b9f798e2690f4c885b57cd711ea698
u/SimonKing/ticket/13394 | Stopgaps:
Dependencies: |
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Comment (by SimonKing):
What exactly happens when a callback is called? I learnt that it can
essentially happen any time. But is the callback then called in one go, or
can it be that some lines of the callback are executed and then again some
lines of the "mainline" code?
In the latter case, it would be entirely possible that `D[k]=v` is
attempted in the mainline code while the callback of another (garbage
collected) dictionary value is working inside of an iteration context.
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Ticket URL: <http://trac.sagemath.org/ticket/13394#comment:40>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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