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#!/usr/bin/env ruby
$: << File.expand_path('../../../lib', __FILE__)
require 'concurrent-edge'
Channel = Concurrent::Channel
## Go by Example: Closing Channels
# https://gobyexample.com/closing-channels
validator = ->(v){ v.is_a? Numeric }
jobs = Channel.new(buffer: :buffered, capacity: 5,
validator: validator)
done = Channel.new(buffer: :unbuffered)
Channel.go_loop do
j, more = jobs.next
if more
print "received job #{j}\n"
true # loop again
else
print "received all jobs\n"
done << true
false # exit the loop
end
end
(1..3).each do |i|
jobs << i
print "sent job #{i}\n"
Thread.pass # give the worker a chance to run
end
jobs.close
print "sent all jobs\n"
~done
__END__
sent job 1
received job 1
sent job 2
received job 2
sent job 3
received job 3
sent all jobs
received all jobs
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