# MonoLogger [![Build Status](https://travis-ci.org/steveklabnik/mono_logger.png?branch=master)](https://travis-ci.org/steveklabnik/mono_logger) [![Code Climate](https://codeclimate.com/github/steveklabnik/mono_logger.png)](https://codeclimate.com/github/steveklabnik/mono_logger) Ruby's stdlib Logger wraps all IO in mutexes. Ruby 2.0 doesn't allow you to request a lock in a trap handler because that could deadlock. This gem fixes this issue by giving you a lock-free logger class. If you've ever seen `log writing failed. can't be called from trap context`, you're in the right place! ## Installation Add this line to your application's Gemfile: gem 'mono_logger' And then execute: $ bundle Or install it yourself as: $ gem install mono_logger ## Usage It's simple, just use `MonoLogger` anywhere you'd use `Logger`: ```ruby require 'logger' logger = Logger.new(STDOUT) logger.level = Logger::WARN logger.debug("Created logger") logger.info("Program started") logger.warn("Nothing to do!") ``` Turns into ```ruby require 'mono_logger' logger = MonoLogger.new(STDOUT) logger.level = MonoLogger::WARN logger.debug("Created logger") logger.info("Program started") logger.warn("Nothing to do!") ``` That's it! No more errors! ## Contributing 1. Fork it 2. Create your feature branch (`git checkout -b my-new-feature`) 3. Commit your changes (`git commit -am 'Add some feature'`) 4. Push to the branch (`git push origin my-new-feature`) 5. Create new Pull Request ## License MIT. See LICENSE.txt for more details.