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Re: profile questions
On Tue, 2006-08-29 at 17:31 +0100, Andrew Haley wrote:
> Tom Tromey writes:
> > >>>>> "Andrew" == Andrew Haley <aph@redhat.com> writes:
> >
> > >> I'd prefer to use dlmopen to solve this instead, but I'm not sure it
> > >> is actually suitable for our needs :-(
> >
> > Andrew> I've heard you say so before, but you never said *why* you think it may
> > Andrew> not actually be suitable. Can you tell us?
> >
> > Yeah, sorry. When loading a library into a new dlmopen namespace, I
> > wonder how other libraries needed by that library are handled. E.g.,
> > a BC-compiled .so will depend on libgcj_bc.so. I suppose it would try
> > to load a new copy of libgcj_bc.so into the new namespace... but this
> > is incorrect for our situation.
It will load a new copy of the library into the new namespace.
Another thing to keep in mind is that dlmopen has a static maximum
number of namespaces per process. On my FC5 system, that max number is
15. (1 is used for the main namespace which leaves you 16 - 1 = 15 for
your own namespaces).
Mathieu
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