455         long colMask = 0;  in doComputePositions()  local
463                 colMask = removeNonAlldayActiveEvents(  in doComputePositions()
464                         event, activeList.iterator(), minimumDurationMillis, colMask);  in doComputePositions()
466                 colMask = removeAlldayActiveEvents(event, activeList.iterator(), colMask);  in doComputePositions()
476                 colMask = 0;  in doComputePositions()
482             int col = findFirstZeroBit(colMask);  in doComputePositions()
485             colMask |= (1L << col);  in doComputePositions()
498     private static long removeAlldayActiveEvents(Event event, Iterator<Event> iter, long colMask) {  in removeAlldayActiveEvents()  argument
505                 colMask &= ~(1L << active.getColumn());  in removeAlldayActiveEvents()
509         return colMask;  in removeAlldayActiveEvents()
513             Event event, Iterator<Event> iter, long minDurationMillis, long colMask) {  in removeNonAlldayActiveEvents()  argument
524                 colMask &= ~(1L << active.getColumn());  in removeNonAlldayActiveEvents()
528         return colMask;  in removeNonAlldayActiveEvents()