From: npostavs@users.sourceforge.net
To: Thierry Volpiatto <thierry.volpiatto@gmail.com>
Cc: 25122@debbugs.gnu.org, Stefan Monnier <monnier@iro.umontreal.ca>,
Boruch Baum <boruch_baum@gmx.com>
Subject: bug#25122: 24.5; function describe-variable hangs on large variables
Date: Sun, 12 Mar 2017 10:15:21 -0400 [thread overview]
Message-ID: <87wpbu7f9i.fsf@users.sourceforge.net> (raw)
In-Reply-To: <87d1dnrq96.fsf@gmail.com> (Thierry Volpiatto's message of "Sun, 12 Mar 2017 06:57:41 +0100")
Thierry Volpiatto <thierry.volpiatto@gmail.com> writes:
> npostavs@users.sourceforge.net writes:
>
>> and suspend it after printing X lines.
>
> Instead just print something like "Computing foo value ..." and let finish
> the thread, letting user reading and moving cursor in docstring while it
> finishes, once done save-excursion and send message "Computing foo value
> done".
Threads aren't truly parallel. The user can't do anything while the
thread is running.
>
>> Then hitting RET on "..." would just print another X lines.
>
> I think like Drew that this would be annoying.
I wonder if we could just hook this into scrolling somehow? So the
lines would only be printed when you scroll to look at them.
>
> That said, what's the reason of choosing the slower approach to compute
> value (in a thread or not) instead of using the approach described in
> the advice I sent here which takes 1s to compute load-history instead of
> 3mn ? (I use this advice since one year now without any problems).
As mentioned in https://debbugs.gnu.org/cgi/bugreport.cgi?bug=21717#8,
it breaks circularity. Try describing this variable:
(defvar circular-list
(let ((l (number-sequence 1 100)))
(setcdr (last l) l)
l)
"A circular list that has problems with (mapc 'pp val).")
We could probably achieve something similar without breaking circular
printing by not calling indent-sexp on the full list, but 1s is longer
than "instant" anyway (which is about 50ms or less) which is why I'm
exploring other options.
next prev parent reply other threads:[~2017-03-12 14:15 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-06 2:21 bug#25122: 24.5; function describe-variable hangs on large variables Boruch Baum
2016-12-06 6:41 ` Thierry Volpiatto
2016-12-07 3:50 ` npostavs
2016-12-07 8:58 ` Thierry Volpiatto
2017-03-11 5:40 ` npostavs
2017-03-11 15:33 ` Stefan Monnier
2017-03-11 19:29 ` Thierry Volpiatto
2017-03-11 21:59 ` npostavs
2017-03-11 23:55 ` Drew Adams
2017-03-12 5:57 ` Thierry Volpiatto
2017-03-12 14:07 ` Stefan Monnier
2017-03-12 14:15 ` npostavs [this message]
2017-03-12 14:59 ` Drew Adams
2017-03-12 16:29 ` Stefan Monnier
2017-03-12 16:32 ` npostavs
2017-03-13 4:47 ` npostavs
2017-03-13 14:01 ` npostavs
2017-03-16 2:54 ` npostavs
2017-04-18 3:53 ` npostavs
2017-04-22 18:25 ` npostavs
2017-04-26 3:57 ` Michael Heerdegen
2017-04-26 10:35 ` Michael Heerdegen
2017-03-11 19:34 ` Thierry Volpiatto
2017-03-12 16:07 ` npostavs
2017-03-11 15:21 ` Stefan Monnier
2017-03-11 15:35 ` npostavs
2017-03-11 19:26 ` Thierry Volpiatto
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