How do I sync up all of my green threads and wait until they finish executing before allowing my program to continue?

[solidiquis]

require "concurrent"

class Test
  include Concurrent::Async

  def some_thread_blocking_operation(atomic_counter)
    sleep 5
    atomic_counter.increment
  end
end

t = Test.new

atomic_counter = Concurrent::AtomicFixnum.new

10.times { t.async.some_thread_blocking_operation atomic_counter }
  
# how do I wait here?

puts "Done. Atomic counter: #{atomic_counter.value}"

Trying to figure out how to synchronize what I'm assuming are green threads spawned by async and have them all finish executing before continuing my program's execution.

[pitr-ch]

You could try to use http://ruby-concurrency.github.io/concurrent-ruby/master/Concurrent/Async.html#await-instance_method and please let me know if that works for you.