Use latest Celluloid with thread tasks

Gemfile

@@ -1,7 +1,7 @@
 source 'http://rubygems.org'
 gemspec
 
-gem 'celluloid'
+gem 'celluloid', ">= 0.12.0.pre"
 gem 'slim'
 gem 'sprockets'
 gem 'sass'

lib/sidekiq/processor.rb

@@ -15,6 +15,8 @@ module Sidekiq
     include Util
     include Celluloid
 
+#    exclusive :process
+
     def self.default_middleware
       Middleware::Chain.new do |m|
         m.add Middleware::Server::Logging
@@ -29,10 +31,6 @@ module Sidekiq
     end
 
     def process(msgstr, queue)
-      # Defer worker execution to Celluloid's thread pool since all actor
-      # invocations are run within a Fiber, which dramatically limits
-      # our stack size.
-      defer do
       begin
         msg = Sidekiq.load_json(msgstr)
         klass  = constantize(msg['class'])
@@ -47,7 +45,6 @@ module Sidekiq
         handle_exception(ex, msg || { :message => msgstr })
         raise
       end
-      end
       @boss.processor_done!(current_actor)
     end
 

sidekiq.gemspec

@@ -17,7 +17,7 @@ Gem::Specification.new do |gem|
   gem.add_dependency                  'redis', '~> 3'
   gem.add_dependency                  'redis-namespace'
   gem.add_dependency                  'connection_pool', '~> 0.9.2'
-  gem.add_dependency                  'celluloid', '~> 0.11.1'
+  gem.add_dependency                  'celluloid'
   gem.add_dependency                  'multi_json', '~> 1'
   gem.add_development_dependency      'minitest', '~> 3'
   gem.add_development_dependency      'sinatra'