Executes a task and returns a future.
Executes a task and returns a future. Forwards an exception if some task threw it.
Executes a result task, waits for it to finish, then returns its result.
Executes a result task, waits for it to finish, then returns its result. Forwards an exception if some task threw it.
Retrieves the parallelism level of the task execution environment.
Retrieves the parallelism level of the task execution environment.