NewStopper create a stopper.

WithLogger set the logger.

WithStopTimeout the stopper will print the names of tasks that are still running beyond this timeout.

WithTimeoutTaskHandler set handler to handle timeout tasks.

ErrUnavailable stopper is not running.

Stopper a stopper used to to manage all tasks that are executed in a separate goroutine, and Stopper can manage these goroutines centrally to avoid leaks.

Option stop option.