From: Gregory Brown <gregory.t.brown@...>
Date: 2005-11-17T14:00:59+09:00
Subject: Re: Improving code...

On 11/16/05, Joe Van Dyk <joevandyk@gmail.com> wrote:

>   # See 'man proc' for details.
>   def get_process_stats
>     proc_stats = File.read("/proc/#{ @pid }/stat")
>
>     # EEWWWW -- gets the stuff from /proc/<pid>/stat and puts it into vars
>     pid, comm, state, ppid, pgrp, session, tty_nr, tpgid, flags,
>       minflt, cminflt, majflt, cmajflt, utime, stime, cutime,
>       cstime, priority, nice, who_cares, itrealvade,
>       starttime, vsize, rss, rlim, startcode, endcode, startstack,
>       kstkesp, kstkeip, signal, blocked, sigignore, sigcatch,
>       wchan, nswap, cnswap, exit_signal, processor =
>     proc_stats.scanf("%d %s %c %d %d %d %d %d %d %d \
> %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d \
> %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d")

proc_stats = File.read("/proc/#{ @pid }/stat").split(" ")

you might need to change your split to match the appropriate pattern,
matching a space above.  This makes proc_stats an array

>     # Just put the ones I need into the hash
>     stats = {}
>     stats[:system_cpu_time] = stime
>     stats[:user_cpu_time] = utime
>     stats[:processor] = processor
>     stats
>   end
> end

stats = { :system_cpu_time => proc_stats[14],
               :user_cpu_time     => proc_stats[13],
               :processor            => proc_stats.last }

the indicies might not be correct above, but hopefully the idea works ;)