public int getRunningThreadCount ( ) { int rc = 0 ; WorkQueue [ ] ws ; WorkQueue w ; if ( ( ws = workQueues ) != null ) { for ( int i = 1 ; i < ws . length ; i += 2 ) { if ( ( w = ws [ i ] ) != null && w . isApparentlyUnblocked ( ) ) ++ rc ; } } return rc ; }
Returns an estimate of the number of worker threads that are not blocked waiting to join tasks or for other managed synchronization . This method may overestimate the number of running threads .