parallel\Future::cancel

Cancellation

public bool parallel\Future::cancel()

Shall try to cancel the task

注意:
If task is running, it will be interrupted.

警告

Internal function calls in progress cannot be interrupted.

警告

Shall throw parallel\Future\Error\Killed if parallel\Runtime executing task was killed.

警告

Shall throw parallel\Future\Error\Cancelled if task was already cancelled.