Only requests that require processing from a controller should block …

…the webrick server -- requests for stylesheets, images, and the like should be concurrent

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@189 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

railties/lib/webrick_server.rb

@@ -27,19 +27,18 @@ def initialize(server, options)
 
   def do_GET(req, res)
     begin
-      REQUEST_MUTEX.lock
-
       unless handle_index(req, res)
         unless handle_dispatch(req, res)
           unless handle_file(req, res)
+            REQUEST_MUTEX.lock
             unless handle_mapped(req, res)
               raise WEBrick::HTTPStatus::NotFound, "`#{req.path}' not found."
             end
           end
         end
       end
     ensure
-      REQUEST_MUTEX.unlock
+      REQUEST_MUTEX.unlock if REQUEST_MUTEX.locked?
     end
   end