gistfile1.rb

class ThreadmappedObject
    def initialize(prototype, delegates = {})
        @delegates = delegates
        prototype.methods.each {|m|
            (class << self; self; end).class_eval {
                define_method(m) {|*args, &block|
                    deleg = @delegates.fetch(Thread.current) {@delegates[:default]}
                    if(deleg)
                        deleg.send(m, *args, &block)
                    else
                        raise "No object mapped for thread"
                    end
                }
            }
        }
    end
    
    def threadmap(obj, thread = nil)
        if(thread)
            @delegates[thread] = obj
        else
            @delegates[Thread.current] = obj
        end
    end
end