Returns the number of worker threads that have started but not yet terminated. The result returned by this method may differ from {@link #getParallelism} when threads are created to maintain parallelism when others are cooperatively blocked.
@return the number of worker threads
See Implementation
Returns the number of worker threads that have started but not yet terminated. The result returned by this method may differ from {@link #getParallelism} when threads are created to maintain parallelism when others are cooperatively blocked.
@return the number of worker threads