Monkey-patch Ruby 1.9.2 Thread class to try to fix issue #5342

threadfix.rb

# Monkey-patch Ruby 1.9.2 Thread class to try to fix issue #5342
#
# http://redmine.ruby-lang.org/issues/5342
require 'thread'

class ConditionVariable
  def wait(mutex, timeout=nil)
    begin
      # TODO: mutex should not be used
      @waiters_mutex.synchronize do
        @waiters.push(Thread.current)
      end
      mutex.sleep timeout
    ensure
      @waiters_mutex.synchronize do
        @waiters.delete(Thread.current)
      end
    end
    self
  end
end