timer.rb

# def repeat_every(interval)
#   Thread.new do
#     loop do
#       start_time = Time.now
#       yield
#       elapsed = Time.now - start_time
#       sleep([interval - elapsed, 0].max)
#     end
#   end
# end
# start_time = Time.now.to_i
# hr = 0;
# min = 0;
# sec = 0;
# thread = repeat_every(1) do
# 	# system ("clear")
# 	now = Time.now.to_i - start_time
# 	sec = now%60
# 	if now > 60
# 		min = now/60
# 	end
# 	if now > 3600
# 		hr = now/3600
# 	end
# 	puts hr.to_s + ":" + min.to_s + ":" + sec.to_s
# end
# th = repeat_every(1)do
# 	puts "in"
# 	com = gets
# 	puts com+"asdfasdfasf"
# 	if com=="s"
# 		thread.end
# 		puts "TIME STOP!"
# 		puts hr.to_s + ":" + min.to_s + ":" + sec.to_s
# 	end
# end  
# puts "Doing other stuff..."
# th.join
# thread.join

user_input = Thread.new do
  print "Enter something: "
  Thread.current[:value] = gets.chomp
end

timer = Thread.new { sleep 3; user_input.kill; puts }

user_input.join
if user_input[:value]
  puts "User entered #{user_input[:value]}"
else
  puts "Timer expired"
end