#10818: EclLib should allow signals to make LISP code interruptable
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Reporter: nbruin | Owner: was
Type: defect | Status: needs_review
Priority: major | Milestone: sage-4.7.1
Component: interfaces | Resolution:
Keywords: lisp ecl signal interrupt | Author: Nils Bruin, Jeroen
Demeyer
Upstream: N/A | Reviewer: Jean-Pierre Flori
Merged: | Work_issues:
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Changes (by jdemeyer):
* status: needs_work => needs_review
Old description:
> Presently, ecllib does not enable signals when executing ecl code. This
> makes LISP code uninterruptable:
> {{{
> sage: from sage.libs.ecl import *
> sage: ecl_eval("(setf i 0)")
> <ECL: 0>
> sage: inf_loop=ecl_eval("(defun infinite() (loop (incf i)))")
> sage: inf_loop() #DON'T DO THIS! (bye bye)
> }}}
> The signal handling in ECL should be studied a bit more to ensure that we
> are safely interacting with it.
>
> When testing this patch, absolutely test it to '''sage-4.7.alpha1 or
> later''' since ECL was updated (#10766) and interrupts were completely
> rewritten (#9678).
>
> Apply [attachment:10818_handlerswap.p3.patch]
New description:
Presently, ecllib does not enable signals when executing ecl code. This
makes LISP code uninterruptable:
{{{
sage: from sage.libs.ecl import *
sage: ecl_eval("(setf i 0)")
<ECL: 0>
sage: inf_loop=ecl_eval("(defun infinite() (loop (incf i)))")
sage: inf_loop() #DON'T DO THIS! (bye bye)
}}}
The signal handling in ECL should be studied a bit more to ensure that we
are safely interacting with it.
When testing this patch, absolutely test it to '''sage-4.7.alpha1 or
later''' since ECL was updated (#10766) and interrupts were completely
rewritten (#9678).
Apply [attachment:10818_handlerswap.p4.patch]
--
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10818#comment:33>
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