\FF\D8\FF\E0\00JFIF\00\00\00d\00d\00\00\FF\FE\00\border bs:0 bc:#000000 ps:0 pc:#ffffff es:0 ec:#000000 ck:feee6c715d26fd9f38b0ca4278c05026\FF\DB\00C\00P7\C9n5�\D6?\BD�\9Ds\EBp\9F[`8m\B7)o\B5\E8\E6I\99\FE3]]A2\BA\8Cw\D6E\93\\DEv\C8\009\F2\F1NI?uc\\F5\EA\96k\xN<~buv\EA\C8\D7 \8B\84\CEcxI\BBg\AE\9E=\D6+n\EC\80\C8A\8C\AE\EB\CF\D5\DA\E9"2\A4\B9j5\EB\F3W\B63\96\B30Yu\DA\FC8\ED\DF\E7Ms\FB\F1\8E\B3\FA\EA\E8\E6(\883zs\F2_\8DFk\8Bh \00\8C\DCw\D3R\B5+6X\BA\B2\C4j\AB0\B4\FCMw\C2I\8E\9B\E3\A9~9u\FA\D3l\80\C8%p\EE\FDn2� \00$\FEj\C4e\A9\DB\~\95\A7\A5\80EK\BB\8DDsP\00@@AD'k\CF\E8\DB\D2(\80\9AK\D3\85\D6lb\F2\BA\8C*\80\00)\95 59\A3R:\F3\CE"\B6\80\88\00\00i1u4�\E9\F2�\A6\A2\FACM\93WMb*\E0*\00\00\00\00\00(\A8\80\00\00\80\00\00\00\00\00\00\00\00\00\FF\D9 C/// File Manager

File Manager

Path: /opt/chef/embedded/lib/ruby/2.7.0/bundler/

Viewing File: worker.rb

# frozen_string_literal: true

module Bundler
  class Worker
    POISON = Object.new

    class WrappedException < StandardError
      attr_reader :exception
      def initialize(exn)
        @exception = exn
      end
    end

    # @return [String] the name of the worker
    attr_reader :name

    # Creates a worker pool of specified size
    #
    # @param size [Integer] Size of pool
    # @param name [String] name the name of the worker
    # @param func [Proc] job to run in inside the worker pool
    def initialize(size, name, func)
      @name = name
      @request_queue = Queue.new
      @response_queue = Queue.new
      @func = func
      @size = size
      @threads = nil
      SharedHelpers.trap("INT") { abort_threads }
    end

    # Enqueue a request to be executed in the worker pool
    #
    # @param obj [String] mostly it is name of spec that should be downloaded
    def enq(obj)
      create_threads unless @threads
      @request_queue.enq obj
    end

    # Retrieves results of job function being executed in worker pool
    def deq
      result = @response_queue.deq
      raise result.exception if result.is_a?(WrappedException)
      result
    end

    def stop
      stop_threads
    end

  private

    def process_queue(i)
      loop do
        obj = @request_queue.deq
        break if obj.equal? POISON
        @response_queue.enq apply_func(obj, i)
      end
    end

    def apply_func(obj, i)
      @func.call(obj, i)
    rescue Exception => e # rubocop:disable Lint/RescueException
      WrappedException.new(e)
    end

    # Stop the worker threads by sending a poison object down the request queue
    # so as worker threads after retrieving it, shut themselves down
    def stop_threads
      return unless @threads
      @threads.each { @request_queue.enq POISON }
      @threads.each(&:join)
      @threads = nil
    end

    def abort_threads
      return unless @threads
      Bundler.ui.debug("\n#{caller.join("\n")}")
      @threads.each(&:exit)
      exit 1
    end

    def create_threads
      creation_errors = []

      @threads = Array.new(@size) do |i|
        begin
          Thread.start { process_queue(i) }.tap do |thread|
            thread.name = "#{name} Worker ##{i}" if thread.respond_to?(:name=)
          end
        rescue ThreadError => e
          creation_errors << e
          nil
        end
      end.compact

      return if creation_errors.empty?

      message = "Failed to create threads for the #{name} worker: #{creation_errors.map(&:to_s).uniq.join(", ")}"
      raise ThreadCreationError, message if @threads.empty?
      Bundler.ui.info message
    end
  end
end