Steel Bank Common Lisp

> Nikodemus Siivola <nikodemus@...> writes:
>=20
> How do you tell the objects you are seeing are not part of SBCL itself=3F

I recognize them (strings) as data generated by my application.

> How do you tell they are not referenced by global functions or variables=
=3F
>=20
> How do you tell the are not part of packages=3F
>=20
> You say you have not been able to find referents with
> map-referencing-objects=3F How have you been using it=3F

I call list-referencing-objects on an object and (if applicable) it's refe=
rencer(s) (usually a single cons cell) and quickly get only * back. I inte=
rpreted that to mean it is only reachable by the automatic * repl-variable=
. I assume that if a global variable is holding on to them I'd notice the =
larger structure, e.g. the hash table or a series of cons cells in the cas=
e of a list.

> My advice: if you observe that memory usage reported by ROOM grows
> without bounds when you run your program, =5Fthen=5F is the time to start
> tracking down mysterious extra references.=20
>=20
> You will never, ever in this lifetime manage to make a complete
> accounting of the contents of a lisp image =5Fand=5F stay sane. Pick
> either one. ,-)

I'm starting to appreciate this wisdom :-)

Thanks,

Chris

=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=

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Christopher Laux <christopher.laux@...> writes:

> I'm trying to track down references to some objects that are not getting
> garbage collected (see print-out below).

How do you tell the objects you are seeing are not part of SBCL itself?

How do you tell they are not referenced by global functions or variables?

How do you tell the are not part of packages?

You say you have not been able to find referents with
map-referencing-objects? How have you been using it?

My advice: if you observe that memory usage reported by ROOM grows
without bounds when you run your program, _then_ is the time to start
tracking down mysterious extra references. 

You will never, ever in this lifetime manage to make a complete
accounting of the contents of a lisp image _and_ stay sane. Pick
either one. ,-)

Cheers,

  -- Nikodemus              Schemer: "Buddha is small, clean, and serious."
                   Lispnik: "Buddha is big, has hairy armpits, and laughs."

I figured out the root cause of the problem: referring to a global
(special) variable in one file before the file it's defined in was
loaded; ASDF loaded the one file before the other, whereas loading by
hand was generally in the proper order.  Once I changed the file
dependencies in my DEFSYSTEM it appears that the files compile without
the error.

Is this the proper behaviour in such an instance?

-- 
Robert Uhl <http://public.xdi.org/=ruhl>
That's how you know you're hooked on something; when it makes you forget
to drink beer.                     --Paul Mather, commenting on The Sims