Fiber scheduler support

[uvlad7]

Ruby introduced non-blocking fibers and fiber schedulers lately, is there any way to make Curl::Easy#perform non-blocking in the same way?
As perform releases GIL under the hood, I expected it to work this way already, but it doesn't seem so:

async_crawler.rb

#!/usr/bin/env -S mise exec [email protected] -- ruby

gem 'curb', '1.0.9'
require 'curl'

gem 'awesome_print', '1.9.2'
require 'awesome_print'

gem 'async', '2.23.0'
require 'async'
gem 'fiber_scheduler', '0.13.0'
require 'fiber_scheduler'
gem 'io-event', '1.9.0'
require 'io/event'

curls = Array.new(3) { Curl::Easy.new }

tasks_arr = curls.size.times.map do
  5.times.map do
    {
      url: 'https://httpbin.org/status/200',
    }
  end
end

def crawl(curl, url)
  curl.url = url
  start_time = Time.now.to_f
  curl.perform
  { code: curl.response_code, start_time: start_time, response_time: Time.now.to_f }
end

##### crawl using fiber_scheduler ####

Fiber.set_scheduler(FiberScheduler.new)

curls.zip(tasks_arr).each do |curl, tasks|
  Fiber.schedule do
    tasks.each do |task|
      Fiber.schedule do
        task.merge!(crawl(curl, task[:url]))
      end
    end
  end
end

Fiber.set_scheduler(nil)

#### end of fiber_scheduler usage ####

ap tasks_arr

#### crawl using Async ####

curls.zip(tasks_arr).each do |curl, tasks|
  Async do
    tasks.each do |task|
      Async do
        task.merge!(crawl(curl, task[:url]))
      end
    end
  end
end

#### end of Async usage ####

ap tasks_arr