queue.rb

require 'thread'
Thread.abort_on_exception = true

def addLog(x,y)
  print x
  puts y
end

def procA()
  addLog("Stuff1", "Thing1")
end

def procB()
  addLog("Stuff2", "Thing2")
end

Thread.new { loop { procA } }
Thread.new { loop { procB } }

loop{}