Looking for a convenient way in C to retrieve CPU and memory usage of a process

[Manish Jain]

Hello,

I am looking for a convenient way using C to retrieve the current CPU 
and memory utilization of a process of which I have the pid. Can 
somebody please give me a hint of which system-calls/library-functions 
to use for this ? I don't want to use the system() function or grep for 
information via the /proc filesystem.

I would be grateful if you could also please mention whether the 
suggested method[s] is/are FreeBSD-specific or would be portable to 
other environments like Solaris/Linux ?


Thanks for any help.

Regards & Happy New Year
Manish Jain
invalid.pointer at gmail.com