kills t
, which aborts all enqueued jobs that haven't started and all jobs enqueued
in the future. If t
has already been killed, then calling kill t
has no effect.
Note that kill does not effect currently running jobs in any way.
is_dead t
returns true
if t
was killed, either by kill
or by an unhandled
exception in a job.
returns the total cost of all jobs that have been enqueued but have not yet started.