#14636: ECL spkg : dirty workarounds?
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Reporter: Snark | Owner: jdemeyer
Type: defect | Status: new
Priority: major | Milestone: sage-pending
Component: packages: standard | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Comment (by nbruin):
(1) unicode: I suppose there are no fundamental obstacles for that.
However, you'll have to essentially rewrite the ecllib wrapper. With Py3
this might become worthwhile, since that has unicode strings internally
anyway (although undoubtedly stored with an encoding different from
ecl's). Also, our main use, Maxima, is solidly pre-unicode, so I don't
think there will be any benefits for us and probably extra problems from
Maxima possibly getting unexpected data.
(2) signals: ECL has very complex and ingenious infrastructure to deal
with signals, and it expects to handle signals itself (which is a bit odd
for a library). With threads enabled there will be a separate thread for
asynchronous signals, and Boehm repurposes some exotic signals to sync
threads on GC events. We cannot afford to submit to ECL's way of handling
signals, so we do some pretty horrible stuff with signals when starting
ECL anyway (and every time we call into ECL for longer times!) Disabling
SIGCHLD is probably the least of your worries. Also, I don't think ECL
does anything with SIGCHLD events anyway (other than possibly installing
its own handler to provide a hook for ecl programs and which by default
ignores the signal)
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14636#comment:4>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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