Don't be sure if this can help you: 
SIG{INT}=sub{exit};

END {
  open LOGFILE, ">filename";
  print LOGFILE '...everything figured out up to now ';
  close LOGFILE;
}

[download]
Now you can terminate your script with CTRL-C and before it terminates, it will do the END block. So you can do all the nesessary stuff in there to save your results.

update as tachyon mentioned, added the SIG{INT} line. 

-----------------------------------
--the good, the bad and the physi--
-----------------------------------

[download]

In reply to Re: keyboard input during runtime... by physi
in thread keyboard input during runtime... by Shadowfax

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