On *nix you can parse the output of ps, or somebody may have an xs interface to a 'top' lib. Can you do something with this?

$ perl -e 'print `ps -l p $$`,$/'
  F S   UID   PID  PPID  C PRI  NI ADDR    SZ WCHAN  TTY        TIME C
+MD
000 S   501  5150   561  0  69   0    -   614 pipe_w pts/2      0:00 p
+erl -e pri
[download]

The ps command has a terrific variety of options for the information and format returned. You can throttle CPU by sleeping, memory footprint will be trickier.

After Compline,
Zaxo