Daemonizes when BACKGROUND environment var is set

Author: cleishm

lib/resque/tasks.rb

@@ -18,6 +18,10 @@
       abort "set QUEUE env var, e.g. $ QUEUE=critical,high rake resque:work"
     end
 
+    if ENV['BACKGROUND']
+      Process.daemon(true)
+    end
+
     if ENV['PIDFILE']
       File.open(ENV['PIDFILE'], 'w') { |f| f << worker.pid }
     end

lib/resque/worker.rb

@@ -470,7 +470,7 @@ def hostname
 
     # Returns Integer PID of running worker
     def pid
-      @pid ||= to_s.split(":")[1].to_i
+      Process.pid
     end
 
     # Returns an Array of string pids of all the other workers on this