TASK CANCELLATION GRACE PERIODS

摘要

A command to perform a task can be received and the task can be started. A command to cancel the task can also be received. The task can be provided with a warning signal and a predetermined grace period of time before cancelling the task, which can allow the task to prepare for cancellation, such as by shutting down cleanly. If the task has not shut down within the grace period, then the task can be cancelled after the grace period expires.