Ruby的stdlib Logger类是线程安全的吗? [英] Is Ruby's stdlib Logger class thread-safe?

问题描述

简而言之，是Ruby线程安全的标准库 Logger 类? Google出现的唯一有用信息是论坛上的某人说它似乎"是线程安全的.而且，我不想花时间测试记录器以弄清楚是否是记录器.

In short, is the standard library Logger class in Ruby thread-safe? Only useful info Google turned up was someone on a forum saying it "seems" thread-safe. And I don't feel like spending time testing a logger to try to figure out if it is or not.

我暂时使用的是 log4r ，它是线程安全的，但是如果使用标准库已经做到了.

For the time being I'm using log4r which is thread-safe, but it's overkill if the standard library already does it.

推荐答案

快速浏览logger.rb会显示如下代码:

A quick look at logger.rb reveals code such as the following:

def write(message)
  @mutex.synchronize do
    if @shift_age and @dev.respond_to?(:stat)
      begin
        check_shift_log
      rescue
        raise Logger::ShiftingError.new("Shifting failed. #{$!}")
      end
    end
    @dev.write(message)
  end
end

因此，尽管我不能保证它是否具有线程安全性正确，但我可以确认它正在共同努力，以正确地做到这一点！

So while I can't vouch for whether it gets thread-safety correct, I can confirm that it is making a concerted effort to do it right!

P.S.通过阅读代码，通常很容易为自己回答这样的问题:-)

P.S. It's often easy to answer questions like this for yourself by reading the code :-)

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