class Rake::ThreadPool

def initialize(thread_count)
  @max_active_threads = [thread_count, 0].max
  @threads = Set.new
  @threads_mon = Monitor.new
  @queue = Queue.new
  @join_cond = @threads_mon.new_cond
  @history_start_time = nil
  @history = []
  @history_mon = Monitor.new
  @total_threads_in_play = 0
end