class Bundler::Worker

常量

POISON

属性

name[R]

@return [String] 工作器的名称

公共类方法

new(size, name, func) 点击以切换源代码

创建指定大小的工作器池

@param size [Integer] 池的大小 @param name [String] 工作器的名称 @param func [Proc] 在工作器池内部运行的作业

# File bundler/worker.rb, line 22
def initialize(size, name, func)
  @name = name
  @request_queue = Thread::Queue.new
  @response_queue = Thread::Queue.new
  @func = func
  @size = size
  @threads = nil
  @previous_interrupt_handler = nil
end

公共实例方法

deq() 点击以切换源代码

检索在工作器池中执行的作业函数的结果

# File bundler/worker.rb, line 41
def deq
  result = @response_queue.deq
  raise result.exception if result.is_a?(WrappedException)
  result
end

enq(obj) 点击以切换源代码

将要在工作器池中执行的请求入队

@param obj [String] 大部分情况下，它是应该下载的规范的名称

# File bundler/worker.rb, line 35
def enq(obj)
  create_threads unless @threads
  @request_queue.enq obj
end

stop() 点击以切换源代码

# File bundler/worker.rb, line 47
def stop
  stop_threads
end

私有实例方法

abort_threads() 点击以切换源代码

# File bundler/worker.rb, line 80
def abort_threads
  Bundler.ui.debug("\n#{caller.join("\n")}")
  @threads.each(&:exit)
  exit 1
end

add_interrupt_handler() 点击以切换源代码

# File bundler/worker.rb, line 107
def add_interrupt_handler
  @previous_interrupt_handler = trap("INT") { abort_threads }
end

apply_func(obj, i) 点击以切换源代码

# File bundler/worker.rb, line 61
def apply_func(obj, i)
  @func.call(obj, i)
rescue Exception => e # rubocop:disable Lint/RescueException
  WrappedException.new(e)
end

create_threads() 点击以切换源代码

# File bundler/worker.rb, line 86
def create_threads
  creation_errors = []

  @threads = Array.new(@size) do |i|
    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.compact

  add_interrupt_handler unless @threads.empty?

  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

process_queue(i) 点击以切换源代码

# File bundler/worker.rb, line 53
def process_queue(i)
  loop do
    obj = @request_queue.deq
    break if obj.equal? POISON
    @response_queue.enq apply_func(obj, i)
  end
end

remove_interrupt_handler() 点击以切换源代码

# File bundler/worker.rb, line 111
def remove_interrupt_handler
  return unless @previous_interrupt_handler

  trap "INT", @previous_interrupt_handler
end

stop_threads() 点击以切换源代码

通过将一个“毒药”对象发送到请求队列来停止工作器线程，以便工作器线程在检索到它后关闭自身

# File bundler/worker.rb, line 69
def stop_threads
  return unless @threads

  @threads.each { @request_queue.enq POISON }
  @threads.each(&:join)

  remove_interrupt_handler

  @threads = nil
end