You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: timer_set.rb
    path of file: ./repos/brew/Library/Homebrew/vendor/bundle-standalone/ruby/2.3.0/gems/concurrent-ruby-1.1.4/lib/concurrent/executor
    
    the code of the file until where you have to start completion: require 'concurrent/scheduled_task'
require 'concurrent/atomic/event'
require 'concurrent/collection/non_concurrent_priority_queue'
require 'concurrent/executor/executor_service'
require 'concurrent/execu
    
    def process_tasks
      loop do
        task = synchronize { @condition.reset; @queue.peek }
        break unless task

        now = Concurrent.monotonic_time
        diff = task.schedule_time - now

        if diff <= 0
          # We need to remove the task from the queue before passing
          # it to the executor, to avoid race conditions where we pass
          # the peek'ed task to the executor and then pop a different
          # one that's been added in the meantime.
          #
          # Note that there's no race condition between the peek and
          # this pop - this pop could retrieve a different task from
          # the peek, but that task would be due to fire now anyway
          # (because @queue is a priority queue, and this thread is
          # the only reader, so whatever timer is at the head of the
          # queue now must have the same pop time, or a closer one, as
          # when we peeked).
          task = synchronize { @queue.pop }
          task.executor.post{ task.process_task }
        else
          @condition.wait([diff, 60].min)
        end
      end