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class Broadcaster | |
attr_reader :ractor | |
def initialize | |
@ractor = new_ractor | |
end | |
def new_ractor | |
Ractor.new { Ractor.recv rescue nil } | |
end | |
def broadcast(message) | |
next_ractor = new_ractor | |
@ractor.define_singleton_method(:next) { next_ractor } | |
frozen_message = message.dup.freeze | |
@ractor.define_singleton_method(:message) { frozen_message } | |
@ractor.close | |
@ractor = next_ractor | |
end | |
class Receiver | |
def initialize(ractor) | |
@ractor = ractor | |
end | |
def recv | |
@ractor.take rescue nil | |
message = @ractor.message | |
@ractor = @ractor.next | |
message | |
end | |
end | |
end | |
bc = Broadcaster.new | |
4.times do |i| | |
Ractor.new i, bc.ractor do |i, r| | |
rec = Broadcaster::Receiver.new r | |
loop do | |
message = rec.recv | |
puts "ractor#{i} received #{message}" | |
end | |
end | |
end | |
(1..).each do |i| | |
bc.broadcast "hello#{i}" | |
sleep 1 | |
end | |
__END__ | |
ractor0 received hello1 | |
ractor1 received hello1 | |
ractor2 received hello1 | |
ractor3 received hello1 | |
ractor3 received hello2 | |
ractor1 received hello2 | |
ractor0 received hello2 | |
ractor2 received hello2 | |
ractor1 received hello3 | |
ractor2 received hello3 | |
ractor0 received hello3 | |
ractor3 received hello3 | |
... |
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