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#1 (**permalink**) 04-29-2008, 08:16 PM

Hi guys!

I have a bunch on non-reentrant shared libraries that I would like to run in
a multi-threaded environment. One of the problems is that they are
connected: library 1 can call library 2, but library 3 can also call library
2, so keeping track that I don't use the same library from different threads
does not help (I don't know the relationships in advance).

I need a good solution:
1.) Is it possible to set different loader domains from my program, so than
I load each library in it's own domain
2.) I've seen some references to USLA (user-space loader assistant) and
SHLAP (shared library assistant process), but I can't find detail to know if
that is of any interest
3.) Is there on AIX some other loadable type that would solve my problem
(not to have one single version loaded) - but to be able to load it
dynamically

TIA,
Norbert

#2 (**permalink**) 05-02-2008, 04:59 AM

On Tue, 29 Apr 2008 11:55:35 +0200, "Norbert"
<norbert@hidden-city-remove.net> wrote:

>Hi guys!
>
>I have a bunch on non-reentrant shared libraries that I would like to run in
>a multi-threaded environment. One of the problems is that they are
>connected: library 1 can call library 2, but library 3 can also call library
>2, so keeping track that I don't use the same library from different threads
>does not help (I don't know the relationships in advance).
>
>I need a good solution:
>1.) Is it possible to set different loader domains from my program, so than
>I load each library in it's own domain

Not really.

>2.) I've seen some references to USLA (user-space loader assistant) and
>SHLAP (shared library assistant process), but I can't find detail to know if
>that is of any interest

Don't bother.

>3.) Is there on AIX some other loadable type that would solve my problem
>(not to have one single version loaded) - but to be able to load it
>dynamically

Unfortunately not.

#3 (**permalink**) 05-07-2008, 10:10 AM

"0xdeadabe" <none@nowhere.net> wrote in message
news:48180e55.128731015@news.motzarella.org...
> On Tue, 29 Apr 2008 11:55:35 +0200, "Norbert"
> <norbert@hidden-city-remove.net> wrote:
>
> >Hi guys!
> >
> >I have a bunch on non-reentrant shared libraries that I would like to run
in
> >a multi-threaded environment. One of the problems is that they are
> >connected: library 1 can call library 2, but library 3 can also call
library
> >2, so keeping track that I don't use the same library from different
threads
> >does not help (I don't know the relationships in advance).
> >
> >I need a good solution:
> >1.) Is it possible to set different loader domains from my program, so
than
> >I load each library in it's own domain
>
> Not really.
>
> >2.) I've seen some references to USLA (user-space loader assistant) and
> >SHLAP (shared library assistant process), but I can't find detail to know
if
> >that is of any interest
>
> Don't bother.
>
> >3.) Is there on AIX some other loadable type that would solve my problem
> >(not to have one single version loaded) - but to be able to load it
> >dynamically
>
> Unfortunately not.
>

Thanks for the answers. I will have lot of fun recoding all of those
libraries

)

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