On Thu, May 27, 2010 at 05:55:33AM +0100, Leo wrote:
> On 2010-05-26 23:45 +0100, Andrew Ross wrote:
> > I've taken a look and it is not immediately obvious what the problem is.
> > Unfortunately I have been unable to recreate the problem with any other
> > language so it must be something related to the threads and lisp. I am no
> > lisp expert, but I tried installing the relevant Ubuntu packages. I've
> > not been able to get your example to work at all. I suspect this is me
> > doing something wrong. Hazen (as author of cl-plplot) are you able to
> > recreate this problem, and if so can you supply instruction on how I
> > might be able to do the same. That way I can begin testing.
> >
> > Thanks
> >
> > Andrew
>
> == 1 ==
>
> Which implementation of lisp do you have? Unlike python, perl or ruby,
> lisp has too many implementations though quite a few good ones. (BTW, I
> think this is one of the damaging factors.)
>
> There's CCL and SBCL that I use for testing the bug. If it is SBCL,
> after you start it, type *features* in the prompt and see if SB-THREAD
> is listed in the output. Otherwise it is a single-threaded lisp and
> won't suffer the problem we are seeing here.
>
> Here's the output from my single-threaded sbcl:
>
I have the multi thread version of SBCL.
> == 2 ==
>
> Now let's make sure we can load cl-plplot. paste the following two lines
> in the prompt:
>
> (require 'asdf)
> (asdf:oos 'asdf:load-op :cl-plplot)
>
> and see if it starts correctly.
>
> If everything is installed from the package manager in debian/ubuntu, it
> could work out of box so you don't need the following change.
>
> In the directory where you install cl-plplot, there's this file:
>
> ..../cl-plplot-0.5.0/src/system/loadlib.lisp
>
> where you can find a bunch of paths trying to guess where the plplot
> library is installed. Change one of them to point to the directory where
> libplplotd.so is, for example, I have:
>
> #P"/users/b/leo/devel/plplot/lib/"
>
> because I installed plplot to /users/b/leo/devel/plplot.
The library is loaded correctly (I think) since I get the message
"libplplotd library loaded". plplot is in the standard /usr/lib so should
be found ok.
After that I get
STYLE-WARNING: Undefined alien: "plimage"
STYLE-WARNING: Implicitly creating new generic function DEFAULT-BAR-WIDTHS.
NIL
0]
; in: LAMBDA NIL
; (PLSDEV "qtwidget")
;
; caught STYLE-WARNING:
; undefined function: PLSDEV
;
; compilation unit finished
; Undefined function:
; PLSDEV
; caught 1 STYLE-WARNING condition
debugger invoked on a UNDEFINED-FUNCTION in thread #<THREAD "initial thread"
RUNNING {100367F441}>:
The function PLSDEV is undefined.
I don't know whether this is a problem between versions of plplot and
cl-plplot (both installed as Ubuntu packages).
>
> == 3 ==
> After this, retry the test code and see if it works. Then we can move on
> to crash lisp ;)
>
> Thanks.
>
> Leo
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