Subject: Re: Threading problems
To: Johnny C. Lam <jlam@NetBSD.org>
From: Nathan J. Williams <firstname.lastname@example.org>
Date: 11/24/2004 11:15:20
"Johnny C. Lam" <jlam@NetBSD.org> writes:
> This is the solution I am currently implementing for pkgsrc. I need
> two issues to be clarified before I start modifying packages:
> (1) I have a shared library that dlopens shared modules that may be
> potentially link with "-pthread". Should this shared library be
> linked with "-pthread"?
> (2) I have an application that links against this above shared library.
> Does this application need to be linked with "-pthread"?
As before, I would counsel caution as to whether the modules being
opened should, in fact, be linked against libpthread. This essentially
becomes "do they call pthread_create()"? For the applications that
have been listed earlier in this thread, is it possible to enumerate
the modules that link against libpthread and check them for this
property? I fear that a module is being linked against libpthread to
satisfy the module's attempts at thread-safety in the presence of a
threaded app, but the app isn't threaded either.