class Rake::ThreadPool

:nodoc:
complete (i.e. after ThreadPool#join is called).
(see #gather_history). Best to call this when the job is
History gathering must be enabled to be able to see the events

Return a array of history events for the thread pool.

def history                 # :nodoc:
  @history_mon.synchronize { @history.dup }.
    sort_by { |i| i[:time] }.
    each { |i| i[:time] -= @history_start_time }
end