C++ application: how to access AIX process and cpu information?

Hi,

may be this is an AIX noob question:
my current C++ application runs on Linux and is quite memory consuming. Therefore, the application writes a logfile after it has finished containing memory information, CPU information, information on the running other processes besides my application etc.
On Linux I use the /proc/ pseudo-filesystem to access this information.
How can I do this for AIX? Is there any "standard" way how to do this (without calling any system commands and parsing its output)?

Thank you very much for your help!!