SysInternals makes a program called PMon that is free for download and will give you a process listing.

open(LIST, "pmon|");
while(<LIST>)
{
# analyze output of pmon here...
}
[download]

Something like above should do the trick. I have never used PMon, so I don't know what the ouput looks like, but I would think it would give you a process's current state in the output.

Jeremy