gistfile1.rb

if defined?(JRUBY_VERSION)
  # Based on: https://gist.github.com/jorgenpt/1356797
  # unfortunately it opens a new thread each time timeout is invoked :-/
  class HTTPClient
    module Timeout
      def timeout(sec, klass=nil)
        return yield(sec) if sec == nil or sec.zero?
        thread = Thread.new { yield(sec) }

        if thread.join(sec).nil?
          java_thread = JRuby.reference(thread)
          thread.kill
          java_thread.native_thread.interrupt
          thread.join(0.1)
          raise (klass || TimeoutError), 'execution expired'
        else
          thread.value
        end
      end
    end
  end
end