From: Nathan <njmacinnes@...>
Date: 2010-04-07T22:05:47+09:00
Subject: modifying a Hash in one process when .each is running in another

I want one process to continually loop through a list of objects (in
the form of a hash), while another process continually refreshes that
list. I've done it the most obvious way below, but are there any
pitfalls here? I don't really know how the each method works, so will
it be looking for keys that may not be there anymore? Would I be
better off doing some kind of merge of the old hash with the new,
rather than replacing the old hash entirely?
Any help much appreciated.
Nathan

tester = Thread.new {
until terminate
myHash.each do |key,value|
value.test()
end
end
}

while Time.now < time_to_finish
myHash = MyClass.generate_list_of_objects
end

terminate=true

tester.join