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#!/usr/bin/env ruby
$LOAD_PATH.push File.expand_path("../lib", __dir__)
require "celluloid/autostart"
class Ring
include Celluloid
class Node
include Celluloid
def initialize(link)
@link = link
end
def around(n)
@link.async.around n
end
end
def initialize(size)
@node = Node.new_link current_actor
size.times do
@node = Node.new_link @node
end
end
# Go around the ring the given number of times
def run(n)
raise ArgumentError, "I can't go around a negative number of times" if n < 0
async.around n
wait :done
end
# Go around the ring the given number of times
def around(n)
if n.zero?
signal :done
else
@node.async.around n - 1
end
end
end
if $PROGRAM_NAME == __FILE__
require "benchmark"
SIZE = 512
TIMES = 10
ring = nil
puts "*** Creating a #{SIZE} node ring..."
puts Benchmark.measure {
ring = Ring.new(SIZE)
}
puts "*** Sending a message around #{TIMES} times"
puts Benchmark.measure {
ring.run(TIMES)
}
end
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