Software transactional memory implementation for Ractor and Thread on Ruby 3.0.
require 'ractor/tvar' tv = Ractor::TVar.new(0) N = 10_000 r = Ractor.new tv do |tv| N.times do Ractor.atomically do tv.value += 1 end end end N.times do Ractor.atomically do tv.value += 1 end end r.take # wait for the ractor p tv.value #=> 20000 (= N * 2)
This script shows that there is no race between ractors.
You need recent Ruby 3.0 (development).
Add this line to your application's Gemfile:
And then execute:
$ bundle install
Or install it yourself as:
$ gem install ractor-tvar
After checking out the repo, run
bin/setup to install dependencies. Then, run
rake test-unit to run the tests. You can also run
bin/console for an interactive prompt that will allow you to experiment.
To install this gem onto your local machine, run
bundle exec rake install. To release a new version, update the version number in
version.rb, and then run
bundle exec rake release, which will create a git tag for the version, push git commits and the created tag, and push the
.gem file to rubygems.org.
Bug reports and pull requests are welcome on GitHub at https://github.com/ko1/ractor-tvar.
The gem is available as open source under the terms of the MIT License.