Dump task hierarchy from another thread

test.rb

#!/usr/bin/env ruby

require "async"

request = ::Thread::Queue.new

thread = Thread.new do
	while true
		sleep 10
		
		IO.pipe do |r, w|
			request.push(w)
			
			puts r.read
		end
	end
end

Async do |task|
	task.async do
		while w = request.pop
			task.print_hierarchy(w)
			w.close
		end
	end
	
	task.annotate("Main Task")
	
	while true
		sleep 1
		puts "Main Task"
	end
end

thread.join