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#!/usr/bin/env ruby
$: << File.expand_path('../../../lib', __FILE__)
require 'concurrent-edge'
Channel = Concurrent::Channel
## Go by Example: Go by Example: Worker Pools
# https://gobyexample.com/worker-pools
def worker(id, jobs, results)
jobs.each do |j|
print "worker #{id} processing job #{j}\n"
sleep(1)
results << j * 2
end
end
jobs = Channel.new(buffer: :buffered, capacity: 100)
results = Channel.new(buffer: :buffered, capacity: 100)
(1..3).each do |w|
Channel.go { worker(w, jobs, results) }
end
(1..9).each do |j|
jobs << j
end
jobs.close
(1..9).each do
~results
end
__END__
worker 1 processing job 1
worker 2 processing job 2
worker 3 processing job 3
worker 1 processing job 4
worker 2 processing job 5
worker 3 processing job 6
worker 1 processing job 7
worker 2 processing job 8
worker 3 processing job 9
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