question: private void expungeStaleEntries ( ) { for ( Object x ; ( x = queue . poll ( ) ) != null ; ) { synchronized ( queue ) { @ SuppressWarnings ( "unchecked" ) Entry < K , V > e = ( Entry < K , V > ) x ; int i = indexFor ( e . hash , table . length ) ; Entry < K , V > prev = table [ i ] ; Entry < K , V > p = prev ; while ( p != null ) { Entry < K , V > next = p . next ; if ( p == e ) { if ( prev == e ) table [ i ] = next ; else prev . next = next ; e . value = null ; size -- ; break ; } prev = p ; p = next ; } } } }
target:  Expunges stale entries from the table.