From: Avdi Grimm <avdi@...>
Date: 2008-12-05T03:54:08+09:00
Subject: Re: Force a program to stop if runtime exceeds given duration

require 'timeout'

HOURS = 60 * 60                 # seconds, minutes
time_limit = 5 * HOURS

begin
  Timeout.timeout(time_limit) do
    # your program goes here
  end
rescue Timeout::Error
    puts "Program has exceeded allotted time, exiting."
end



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