public static long getAndAddRequest(AtomicLong requested, long n) {
        // add n to field but check for overflow
        while (true) {
            long current = requested.get();
            long next = current + n;
            // check for overflow
            if (next < 0) {
                next = Long.MAX_VALUE;
            }
            if (requested.compareAndSet(current, next)) {
                return current;
            }
        }
    }
public static long getAndAddRequest ( AtomicLong requested , long n ) { while ( true ) { long current = requested . get ( ) ; long next = current + n ; if ( next < 0 ) { next = Long . MAX_VALUE ; } if ( requested . compareAndSet ( current , next ) ) { return current ; } } }
Adds {@code n} to {@code requested} and returns the value prior to
addition once the addition is successful (uses CAS semantics). If
overflows then sets {@code requested} field to {@code Long.MAX_VALUE}.

@param requested
atomic field updater for a request count
@param object
contains the field updated by the updater
@param n
the number of requests to add to the requested count
@return requested value just prior to successful addition