Memory usage in l4linux

[fabs0028 at free.fr]

Hello,
well i 'd like to know how much memory uses each l4 application launched in my
l4linux system.
I'm pretty sure that there's no program for this purpose.

I'm gonna write this but i don't really how to do it so if someone could give me
so hints about how to start (mainly what library to use to obtain the
informations i need)
Thanx for your help

Fabien Chaillou