bblimke/webmock — pull request #244 by tbeauvais (2013-01-15 23:32:35+00:00)
Title: HashCounter put/get methods should be synchronized

We ran into an issue using webmock in a JRuby multi-thread environment. We ended up having two threads hanging when trying to "put" to the HashCounter. Since this is used on the RequestRegistry class, which is a singleton you can have multiple threads trying to add to the same HashCounter.