update OOB gc hook for unicorn

Gemfile

@@ -57,6 +57,8 @@ gem 'aws-s3', :require => "aws/s3", :git => "https://github.com/fnando/aws-s3.gi
 
 group :production do
   gem 'unicorn', :platforms => :ruby
+  # gem 'unicorn-worker-killer'
+  gem 'gctools'
   gem 'capistrano-unicorn', :require => false
 end
 

Gemfile.lock

@@ -104,6 +104,7 @@ GEM
     faraday (0.9.0)
       multipart-post (>= 1.2, < 3)
     ffaker (1.24.0)
+    gctools (0.2.3)
     hashie (3.3.1)
     highline (1.6.21)
     hike (1.2.3)
@@ -310,6 +311,7 @@ DEPENDENCIES
   diff-lcs
   factory_girl
   ffaker
+  gctools
   kgio
   mechanize
   mocha

config.ru

@@ -3,9 +3,8 @@
 require ::File.expand_path('../config/environment',  __FILE__)
 
 if defined? Unicorn
-  require_dependency 'unicorn/oob_gc'
+  require_dependency 'gctools/oobgc'
-  GC.disable
+  use GC::OOB::UnicornMiddleware
-  use Unicorn::OobGC
 end
 
 run Rails.application