Auto-reload changed dependancies

ruby-talk
1

Hi Rubyers

Does ruby keep a list of require'd files anywhere? I'd like to make a method that will loop over them, check the last modification time to see if they've, and reload them if they have.

One of the frustrating things about rails is that running it as a CGI to have it auto-reload your changes can take 5-11 seconds to render a page (at least on windows) - which makes testing a pain. I'm hoping to make the ruby equilavant of Apache::StatINC in perl, but aren't sure of where to begin, or if this has already been done before.

Thanks,
Kevin
Allpoetry.com Community Manager

2

I did that (or something very similar) yesterday for my webframework,
where a auto reload feature can be quite useful.

$LOADED_FEATURES and $LOAD_PATH is your friend.

  # autoload.rb
  START_TIME = Time.now
  Thread.new {
    file_mtime = {}
    loop do
      sleep 1
      $LOADED_FEATURES.each do |feature|
        $LOAD_PATH.each do |lp|
          file = File.join(lp, feature)
          if File.exists?(file) and File.stat(file).mtime > (file_mtime[file] || $START_TIME)
            file_mtime[file] = File.stat(file).mtime
            p "reload #{ file }"
            load(file)
          end
        end
      end
    end
  }

Regards,

  Michael

ยทยทยท

On Mon, Oct 18, 2004 at 12:47:24AM +0900, Kevin Watt wrote:

Hi Rubyers

Does ruby keep a list of require'd files anywhere? I'd like to make a
method that will loop over them, check the last modification time to see
if they've, and reload them if they have.