View file File name : atomic.rb Content :# Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. begin # force fallback impl with FORCE_ATOMIC_FALLBACK=1 if /[^0fF]/ =~ ENV['FORCE_ATOMIC_FALLBACK'] ruby_engine = 'fallback' else ruby_engine = defined?(RUBY_ENGINE)? RUBY_ENGINE : 'ruby' end require "atomic/#{ruby_engine}" rescue LoadError warn "#{__FILE__}:#{__LINE__}: unsupported Ruby engine `#{RUBY_ENGINE}', using less-efficient Atomic impl" require 'atomic/fallback' end