# File lib/spruz/limited.rb, line 18
    def execute
      @mutex.synchronize do
        loop do
          if @count < @maximum
            @count += 1
            Thread.new do
              yield
              @mutex.synchronize { @count -= 1 }
              @continue.signal
            end
            return
          else
            @continue.wait(@mutex)
          end
        end
      end
    end