A reentrant/recursive flock.
Add this line to your application's Gemfile:
And then execute:
Or install it yourself as:
$ gem install reentrant_flock
require 'reentrant_flock' File.open('/tmp/lock', File::RDWR | File::CREAT) do |fp| .(fp, File::LOCK_EX) do .(fp, File::LOCK_EX) do # Not blocked by myself end end end
require 'reentrant_flock' def with_rlock(&block) File.open('/tmp/lock', File::RDWR | File::CREAT) do |fp| .(fp, File::LOCK_EX, &block) end end with_rlock do with_rlock do # Not blocked by myself end end
ReentrantFlock.synchronize would raise
File::LOCK_NB is given and already locked by somebody else.
See File#flock for flags.
After checking out the repo, run
bin/setup to install dependencies. Then, run
rake test 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 tags, and push the
.gem file to rubygems.org.
Bug reports and pull requests are welcome on GitHub at https://github.com/sonots/reentrant_flock.