chef

https://github.com/opscode/chef

Ruby

A systems integration framework, built to bring the benefits of configuration management to your entire infrastructure.

Chef::RunLock#acquire_win32_mutex

Since flock mechanism doesn't exist on windows we are using
platform Mutex.
We are creating a "Global" mutex here so that non-admin
users can not DoS chef-client by creating the same named
mutex we are using locally.
Mutex name is case-sensitive contrary to other things in
windows. "\" is the only invalid character.

Source | Google | Stack overflow

Edit

git clone [email protected]:opscode/chef.git
cd chef
open lib/chef/run_lock.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-Chef--RunLock-acquire_win32_mutex-for-pr

# Commit to git

git add lib/chef/run_lock.rbgit commit -m "better docs for Chef::RunLock#acquire_win32_mutex"

# Open pull request

gem install hub # on a mac you can `brew install hub`

hub fork

git push <your name> -your-name--update-docs-Chef--RunLock-acquire_win32_mutex-for-pr

hub pull-request

# Celebrate!