猴子修补对象导致 Pry 死锁

Question

我正在尝试猴子修补对象，而我的测试运行很好，我无法再使用 Pry 加载我的项目。

相关代码如下：

module CoreExtensions
  def instance_values
    instance_variables.each_with_object({}) do |var, hash|
      hash[var[1..-1]] = instance_variable_get(var)
    end
  end

  def ==(other)
    (self.class == other.class) &&
      (instance_values.equal? other.instance_values)
  end
end

Object.include CoreExtensions

正在使用

pry -r ./core_extentions.rb

导致此堆栈跟踪：

Error: No live threads left. Deadlock?
/home/fap/.rvm/gems/ruby-2.3.0/gems/pry-0.10.3/lib/pry/input_lock.rb:87:in `sleep'
/home/fap/.rvm/gems/ruby-2.3.0/gems/pry-0.10.3/lib/pry/input_lock.rb:87:in `wait'
/home/fap/.rvm/gems/ruby-2.3.0/gems/pry-0.10.3/lib/pry/input_lock.rb:87:in `block in enter_interruptible_region'
/home/fap/.rvm/gems/ruby-2.3.0/gems/pry-0.10.3/lib/pry/input_lock.rb:83:in `synchronize'
/home/fap/.rvm/gems/ruby-2.3.0/gems/pry-0.10.3/lib/pry/input_lock.rb:83:in `enter_interruptible_region'
/home/fap/.rvm/gems/ruby-2.3.0/gems/pry-0.10.3/lib/pry/input_lock.rb:110:in `interruptible_region'
/home/fap/.rvm/gems/ruby-2.3.0/gems/pry-0.10.3/lib/pry/repl.rb:197:in `input_readline'
/home/fap/.rvm/gems/ruby-2.3.0/gems/pry-0.10.3/lib/pry/repl.rb:190:in `block in read_line'
/home/fap/.rvm/gems/ruby-2.3.0/gems/pry-0.10.3/lib/pry/repl.rb:129:in `handle_read_errors'
/home/fap/.rvm/gems/ruby-2.3.0/gems/pry-0.10.3/lib/pry/repl.rb:170:in `read_line'
/home/fap/.rvm/gems/ruby-2.3.0/gems/pry-0.10.3/lib/pry/repl.rb:98:in `read'
/home/fap/.rvm/gems/ruby-2.3.0/gems/pry-0.10.3/lib/pry/repl.rb:68:in `block in repl'
/home/fap/.rvm/gems/ruby-2.3.0/gems/pry-0.10.3/lib/pry/repl.rb:67:in `loop'
/home/fap/.rvm/gems/ruby-2.3.0/gems/pry-0.10.3/lib/pry/repl.rb:67:in `repl'
/home/fap/.rvm/gems/ruby-2.3.0/gems/pry-0.10.3/lib/pry/repl.rb:38:in `block in start'
/home/fap/.rvm/gems/ruby-2.3.0/gems/pry-0.10.3/lib/pry/input_lock.rb:61:in `__with_ownership'
/home/fap/.rvm/gems/ruby-2.3.0/gems/pry-0.10.3/lib/pry/input_lock.rb:79:in `with_ownership'
/home/fap/.rvm/gems/ruby-2.3.0/gems/pry-0.10.3/lib/pry/repl.rb:38:in `start'
/home/fap/.rvm/gems/ruby-2.3.0/gems/pry-0.10.3/lib/pry/repl.rb:15:in `start'
/home/fap/.rvm/gems/ruby-2.3.0/gems/pry-0.10.3/lib/pry/pry_class.rb:169:in `start'
/home/fap/.rvm/gems/ruby-2.3.0/gems/pry-byebug-3.3.0/lib/pry-byebug/pry_ext.rb:11:in `start_with_pry_byebug'
/home/fap/.rvm/gems/ruby-2.3.0/gems/pry-0.10.3/lib/pry/cli.rb:219:in `block in <top (required)>'
/home/fap/.rvm/gems/ruby-2.3.0/gems/pry-0.10.3/lib/pry/cli.rb:83:in `block in parse_options'
/home/fap/.rvm/gems/ruby-2.3.0/gems/pry-0.10.3/lib/pry/cli.rb:83:in `each'
/home/fap/.rvm/gems/ruby-2.3.0/gems/pry-0.10.3/lib/pry/cli.rb:83:in `parse_options'
/home/fap/.rvm/gems/ruby-2.3.0/gems/pry-0.10.3/bin/pry:16:in `<top (required)>' /home/fap/.rvm/gems/ruby-2.3.0/bin/pry:23:in `load'
/home/fap/.rvm/gems/ruby-2.3.0/bin/pry:23:in main
/home/fap/.rvm/gems/ruby-2.3.0/bin/ruby_executable_hooks:15:in `eval'
/home/fap/.rvm/gems/ruby-2.3.0/bin/ruby_executable_hooks:15:in main

当我在主 class.

中包含我的 CoreExtentions 时，也会发生同样的事情

我读到了 Pry 的 input_lock，但我不明白是什么导致了死锁。

有人知道为什么会这样吗？

Answer 1

您为所有对象重新定义了方法==，这不是一件好事。

这来自你问题的最后一行，即 Object.include CoreExtentions

没有该定义，它加载正常。

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