concurrent-ruby-edge Channel.select consumes full(single core) cpu

[adityacs]

* `concurrent-ruby` version:       1.1.7
* `concurrent-ruby-edge` used:     yes 

I am running this simple code and I see that select is not blocking on the channels and instead always looping which consumes full(single core) CPU.

require 'concurrent-edge'

Channel = Concurrent::Channel
string1 = Channel.new
string2 = Channel.new

loop do
  Channel.select do |s|
    s.take(string1) {
      puts "string1"
    }
    s.take(string2) { 
      puts "string2"
    }
  end
end

[kvokka]

It is Ruby, not go, so it is not possible to push from another thread to the current one, like it is implemented in go's select.

As the result you can only pull, which this select is actually doing (and consuming 100% CPU).

Adding s.default { sleep 0.001 } will solve it.