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require 'thread'
# many producers, many consumers
nr = 1_000_000
n = 10
m = 10
q = Thread::SizedQueue.new(100)
consumers = n.times.map do
Thread.new do
while q.pop
# consuming
end
end
end
producers = m.times.map do
Thread.new do
while nr > 0
q.push true
nr -= 1
end
end
end
producers.each(&:join)
n.times { q.push nil }
consumers.each(&:join)
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