Clearly Ruby doesn't have enough UUID libraries This one aims to be fast and simple with good support for multiple threads If there's a better UUID library I can use with similar multithreaded performance, I certainly wouldn't mind using a gem for this!
# File lib/celluloid/uuid.rb, line 16 def self.generate thread = Thread.current unless thread.uuid_limit @counter_mutex.synchronize do block_base = @counter @counter += BLOCK_SIZE thread.uuid_counter = block_base thread.uuid_limit = @counter - 1 end end counter = thread.uuid_counter if thread.uuid_counter >= thread.uuid_limit thread.uuid_counter = thread.uuid_limit = nil else thread.uuid_counter += 1 end "#{PREFIX}-#{sprintf("%012x", counter)}".freeze end
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