From 28572f59f828cc2b8309e8c477658fed2a38f83b Mon Sep 17 00:00:00 2001 From: thedarkone Date: Wed, 7 Aug 2013 20:23:22 +0200 Subject: Use TS::Cache instead of Mutex + Hash. TS::Cache#compute_if_absent guarantees that only a single thread will get to execute the provided block for a given key. --- activerecord/lib/active_record/attribute_methods.rb | 20 ++++++++------------ 1 file changed, 8 insertions(+), 12 deletions(-) (limited to 'activerecord') diff --git a/activerecord/lib/active_record/attribute_methods.rb b/activerecord/lib/active_record/attribute_methods.rb index 208da2cb77..bf270c1829 100644 --- a/activerecord/lib/active_record/attribute_methods.rb +++ b/activerecord/lib/active_record/attribute_methods.rb @@ -1,5 +1,6 @@ require 'active_support/core_ext/enumerable' require 'mutex_m' +require 'thread_safe' module ActiveRecord # = Active Record Attribute Methods @@ -29,23 +30,18 @@ module ActiveRecord } class AttributeMethodCache - include Mutex_m - def initialize - super @module = Module.new - @method_cache = {} + @method_cache = ThreadSafe::Cache.new end def [](name) - synchronize do - @method_cache.fetch(name) { - safe_name = name.unpack('h*').first - temp_method = "__temp__#{safe_name}" - ActiveRecord::AttributeMethods::AttrNames.set_name_cache safe_name, name - @module.module_eval method_body(temp_method, safe_name), __FILE__, __LINE__ - @method_cache[name] = @module.instance_method temp_method - } + @method_cache.compute_if_absent(name) do + safe_name = name.unpack('h*').first + temp_method = "__temp__#{safe_name}" + ActiveRecord::AttributeMethods::AttrNames.set_name_cache safe_name, name + @module.module_eval method_body(temp_method, safe_name), __FILE__, __LINE__ + @module.instance_method temp_method end end -- cgit v1.2.3